/* 品牌色：取自山峰电路 Logo。白色承载中文标识，深蓝保障正文对比度，金色只作强调而非小号正文。 */
:root {
  --paper: #ffffff;
  --white: #ffffff;
  --ink: #06465f;
  --muted: #536b77;
  --surface: #f5f7f8;
  --radius: 4px;
  --line: #d6e0e5;
  --gold: #e8ad32;
  --dark: #06465f;
  --blue: #246b8b;
  --body-font: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
}

/* 全站盒模型与文本默认值：长文本允许在内容边界换行，避免桌面窄视口横向溢出。 */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 102px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--body-font); font-size: 15px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, select { cursor: pointer; }
button { color: inherit; }
svg { display: block; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-weight: 650; }
ul, ol { padding: 0; margin: 0; list-style: none; }
button, a, select, textarea { -webkit-tap-highlight-color: transparent; }
::selection { background: var(--gold); color: var(--ink); }
:focus-visible { outline: 3px solid #246b8b; outline-offset: 5px; }
.container { width: calc(100% - 112px); max-width: 1280px; margin: 0 auto; }
.eyebrow { font-size: 11px; font-weight: 650; letter-spacing: .13em; line-height: 1.6; }

/* 可访问性入口：仅键盘聚焦时显示跳过导航按钮，避免遮挡正常阅读。 */
.skip-link { position: fixed; z-index: 100; left: 16px; top: 12px; padding: 10px 18px; color: var(--white); background: var(--dark); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

/* 顶部导航：保持完整公司名与主要入口同时可见；轻边线建立编辑式页面秩序。 */
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 114px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; flex-shrink: 0; }
/* 原始横版含白边，整图等比展示；不以固定高度拉伸，也不使用会裁掉中文的 cover。 */
.brand-logo { display: block; width: 380px; max-width: 100%; height: auto; object-fit: contain; }
.primary-nav { display: flex; align-items: center; gap: 26px; font-size: 14px; font-weight: 500; }
.primary-nav > a:not(.nav-cta) { padding: 9px 0; border-bottom: 1px solid transparent; }
.primary-nav > a:not(.nav-cta):hover { border-color: var(--ink); }
.nav-cta { display: flex; gap: 30px; align-items: center; border: 1px solid var(--ink); padding: 10px 18px; }
.nav-cta:hover { color: var(--paper); background: var(--dark); }
.nav-cta > span { font-size: 19px; line-height: 1; }

/* 首屏双栏：左侧主张与行动入口，右侧原创结构图；两档桌面尺寸均保留完整图形。 */
.hero { display: grid; grid-template-columns: 1.14fr 1fr; gap: 56px; align-items: center; padding-top: 79px; padding-bottom: 81px; }
.hero-copy { min-width: 0; }
.hero .eyebrow { display: flex; align-items: center; gap: 9px; }
.small-cross { font-size: 24px; line-height: 1; }
h1 { margin-top: 26px; font-size: clamp(48px, 4.75vw, 68px); letter-spacing: -.055em; line-height: 1.39; white-space: nowrap; }
.word-software { position: relative; display: inline-block; z-index: 0; }
.word-software > svg { width: 100%; position: absolute; left: 0; bottom: 2px; z-index: -1; color: var(--gold); }
.hero-description { margin-top: 23px; color: var(--muted); font-size: 16px; line-height: 1.95; }
.hero-actions { display: flex; align-items: center; gap: 27px; margin-top: 29px; }
.button { display: inline-flex; justify-content: space-between; align-items: center; gap: 25px; border: 1px solid transparent; padding: 13px 20px; font-size: 14px; font-weight: 600; line-height: 1.7; min-height: 46px; border-radius: var(--radius); }
.button > span { font-size: 22px; font-weight: 400; line-height: 1; }
.button-dark { background: var(--dark); color: var(--white); }
.button-dark:hover { background: #246b8b; }
.text-link { display: inline-flex; gap: 16px; align-items: center; padding: 7px 0; border-bottom: 1px solid var(--ink); font-size: 13px; font-weight: 500; }
.text-link:hover { color: #246b8b; border-color: #246b8b; }
.hero-footnote { display: flex; align-items: center; flex-wrap: wrap; column-gap: 9px; font-size: 10px; color: var(--muted); margin-top: 41px; }
.status-dot { height: 6px; width: 6px; background: #246b8b; border-radius: 50%; }
.dot-separator { color: #94a6ae; margin: 0 2px; }
.hero-art { border-radius: var(--radius); align-self: stretch; min-height: 434px; background: var(--dark); color: var(--paper); position: relative; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; }
.art-topline, .art-bottomline { margin: 0 25px; display: flex; justify-content: space-between; gap: 14px; align-items: center; font-size: 11px; }
.art-topline { padding-top: 23px; }
.art-index { color: #b4cbd5; letter-spacing: .09em; font-size: 9px; }
.architecture-art { width: 100%; height: auto; margin: 8px 0; flex: 1; min-height: 0; }
.art-bottomline { padding: 17px 0; border-top: 1px solid #487d94; color: #d1e1e8; }
.art-bottomline > span:last-child { font-size: 21px; line-height: 1; color: var(--gold); }

/* 首屏定位横带：与下一节以细分隔线连接，减少营销卡片的重复装饰。 */
.principles-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.principles-strip .container { min-height: 80px; display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: 13px; }
.principles-strip .container > span:first-child { font-weight: 600; }
.principles-strip .container > span:last-child { display: flex; align-items: center; gap: 30px; color: var(--muted); font-size: 12px; }
.principles-strip i { color: #ac7715; font-style: normal; font-size: 19px; }

/* 通用章节标题：小号章节索引在左，大标题和解释在右，以留白区分信息层级。 */
.section { padding-top: 103px; padding-bottom: 106px; }
.section-heading { display: grid; grid-template-columns: .65fr 2fr; gap: 28px; }
.section-heading > .eyebrow { padding-top: 11px; }
.section-heading > div { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; }
h2 { font-size: 38px; letter-spacing: -.045em; line-height: 1.45; }
.section-intro { color: var(--muted); font-size: 13px; padding-bottom: 5px; line-height: 1.95; }

/* 三项服务：边框与编号保持可扫描性；图标为内联 SVG 描边，不需要任何图标库。 */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 27px; margin-top: 57px; }
.service-card { min-width: 0; padding: 29px 26px; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); background: var(--surface); }
.service-card:hover { background: #f0f4f6; }
.service-top { display: flex; align-items: flex-start; justify-content: space-between; }
.service-number { font-size: 11px; color: #687d87; }
.service-top > svg { height: 42px; width: 42px; fill: none; stroke: var(--ink); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 { margin-top: 27px; margin-bottom: 14px; font-size: 23px; }
.service-card > p { font-size: 14px; line-height: 2; color: var(--muted); min-height: 78px; }
.service-tags { margin-top: 29px; padding-top: 17px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 5px 11px; }
.service-tags > li { font-size: 10px; color: #506b79; }
.service-tags > li:not(:last-child)::after { content: "/"; padding-left: 11px; color: #aebec6; }

/* 交互场景：深色背景承接业务故事，浅色软件示意面板承载会随选择变化的流程。 */
.scenarios-section { background: var(--dark); color: var(--paper); padding: 81px 0; }
.scenarios-inner { display: grid; grid-template-columns: .85fr 1.15fr; gap: 76px; align-items: center; }
.scenario-copy .eyebrow { color: #e8cf94; }
.scenario-copy h2 { margin-top: 28px; font-size: 36px; }
.scenario-intro { color: #c0d4df; font-size: 13px; margin-top: 20px; line-height: 2; }
.scenario-tabs { display: grid; gap: 1px; margin-top: 35px; }
.scenario-tabs button { width: 100%; border: 0; border-bottom: 1px solid #477d94; padding: 18px 0; background: none; color: #d9e7ee; display: flex; align-items: center; gap: 25px; text-align: left; font-size: 16px; }
.scenario-tabs button > span:first-child { font-size: 10px; opacity: .7; }
.scenario-tabs .tab-arrow { margin-left: auto; font-size: 21px; }
.scenario-tabs button[aria-selected="true"] { color: var(--gold); border-color: var(--gold); }
.scenario-tabs button[aria-selected="false"] .tab-arrow { opacity: .25; }
.scenario-tabs button:hover { color: var(--white); }
.scenario-tabs button:focus-visible { outline-color: var(--gold); outline-offset: 3px; }
.scenario-disclaimer { color: #b9d0dd; font-size: 10px; margin-top: 25px; }
.scenario-demo { min-width: 0; background: var(--paper); color: var(--ink); border: 1px solid #a8c4d2; border-radius: var(--radius); box-shadow: 0 12px 32px #00263730; }
.demo-chrome { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 49px; padding: 0 22px; border-bottom: 1px solid var(--line); font-size: 10px; color: var(--muted); }
.demo-dots { display: flex; gap: 5px; }
.demo-dots > i { width: 5px; height: 5px; background: #b6c8d1; border-radius: 50%; }
.demo-badge { border: 1px solid #ccdce4; padding: 1px 8px; font-size: 9px; }
.demo-body { padding: 30px 30px 28px; }
.demo-eyebrow { font-size: 10px; color: #5a7684; }
.demo-body h3 { font-size: 24px; letter-spacing: -.03em; margin-top: 5px; }
.demo-description { margin-top: 10px; font-size: 12px; line-height: 1.9; color: var(--muted); min-height: 46px; }
.flow-heading { display: flex; align-items: center; justify-content: space-between; margin-top: 26px; margin-bottom: 9px; color: #607783; font-size: 10px; }
.flow-heading > span:last-child { font-size: 20px; }
.demo-flow { border-top: 1px solid var(--line); }
.demo-flow > li { display: flex; align-items: center; gap: 15px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.flow-number { display: grid; place-items: center; width: 30px; height: 30px; flex-shrink: 0; border: 1px solid #abc2cd; font-size: 10px; }
.demo-flow li:last-child .flow-number { background: var(--gold); border-color: var(--gold); }
.demo-flow strong { display: block; font-size: 12px; font-weight: 600; line-height: 1.5; }
.demo-flow li > div > span { display: block; margin-top: 4px; color: var(--muted); font-size: 10px; }
.flow-symbol { margin-left: auto; color: #63879a; flex-shrink: 0; }
.demo-outcome { display: flex; gap: 13px; margin-top: 23px; padding: 13px 14px; background: #eaf2f6; }
.outcome-icon { font-size: 26px; line-height: 1.35; color: #246b8b; }
.demo-outcome p > span { display: block; font-size: 9px; color: #5f7680; }
.demo-outcome strong { display: block; font-size: 11px; font-weight: 500; margin-top: 2px; }

/* 合作流程：四列时间线式排版，分别列出行动及可见产物，不用虚构数字制造可信度。 */
.approach-grid { margin-top: 55px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 27px; }
.approach-grid > li { border-top: 1px solid #719caf; padding-top: 20px; min-width: 0; }
.step-number { display: flex; align-items: center; justify-content: space-between; font-size: 30px; font-weight: 350; }
.step-number > span { color: #7b9bac; font-size: 21px; }
.step-english { font-size: 9px; color: #607986; letter-spacing: .05em; margin-top: 28px; }
.approach-grid h3 { font-size: 19px; margin-top: 6px; }
.approach-grid li > p:not(.step-english) { color: var(--muted); font-size: 12px; line-height: 2; margin-top: 13px; min-height: 72px; }
.step-output { display: block; margin-top: 22px; color: #246b8b; font-size: 10px; padding-left: 9px; border-left: 2px solid #e8ad32; }

/* 工作室介绍：大比例品牌模块与克制文案组成安静的视觉停顿，连接服务与联系区域。 */
.about-section { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 61px 71px; display: grid; grid-template-columns: .75fr 1.25fr; gap: 90px; align-items: center; margin-bottom: 105px; }
.about-mark { display: flex; flex-direction: column; align-items: center; gap: 27px; }
.about-mark img { display: block; width: 100%; max-width: 400px; height: auto; background: #ffffff; }
.about-copy .eyebrow { font-size: 9px; color: #466e83; }
.about-copy h2 { margin-top: 18px; font-size: 33px; }
.about-copy > p:not(.eyebrow) { color: var(--muted); font-size: 13px; line-height: 2; margin-top: 15px; }
.company-inline { color: var(--ink); }
.about-copy .text-link { margin-top: 20px; font-size: 12px; }

/* 联系区与本地需求工具：表单严格在客户端工作，显式告知不会发送，下载状态可由读屏读取。 */
.contact-section { background: #06465f; color: var(--paper); padding: 82px 0; }
.contact-inner { display: grid; grid-template-columns: .92fr 1.08fr; gap: 100px; align-items: center; }
.contact-copy .eyebrow { color: #e8cf94; }
.contact-copy h2 { font-size: 48px; margin-top: 27px; line-height: 1.42; }
.contact-copy > p:not(.eyebrow) { font-size: 14px; color: #c6d9e3; line-height: 2; margin-top: 23px; }
.contact-note { display: flex; gap: 17px; padding-top: 28px; margin-top: 47px; border-top: 1px solid #47798f; }
.note-cross { color: var(--gold); font-size: 30px; line-height: 1.3; }
.contact-note strong { font-size: 12px; font-weight: 500; color: #e1edf3; }
.contact-note p { color: #bbd1dd; font-size: 11px; line-height: 1.9; margin-top: 5px; }
.blank-download { display: inline-flex; gap: 25px; margin-top: 24px; padding-bottom: 5px; border-bottom: 1px solid #8caebf; color: #f4d896; font-size: 11px; }
.blank-download:hover { color: var(--white); }
.blank-download > span { font-size: 17px; line-height: 1.3; }
.requirement-card { border-radius: var(--radius); padding: 30px; background: var(--paper); color: var(--ink); }
.requirement-heading { padding-bottom: 17px; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 15px; }
.requirement-heading h3 { font-size: 18px; }
.requirement-heading > span { font-size: 9px; color: var(--muted); }
#requirement-form { display: flex; flex-direction: column; }
#requirement-form label { display: block; font-size: 12px; font-weight: 500; margin-top: 19px; margin-bottom: 7px; }
#requirement-form label > span { color: #627983; font-size: 10px; font-weight: 400; margin-left: 5px; }
#requirement-form select, #requirement-form textarea { width: 100%; border: 1px solid #c9d9e1; border-radius: 0; background: var(--white); color: var(--ink); padding: 10px 12px; font-size: 12px; line-height: 1.9; }
#requirement-form select { min-height: 43px; }
#requirement-form textarea { resize: vertical; min-height: 80px; max-height: 280px; }
#requirement-form textarea::placeholder { color: #697d88; opacity: 1; }
#requirement-form textarea:focus, #requirement-form select:focus { border-color: #246b8b; }
.download-button { width: 100%; margin-top: 21px; }
.download-button:disabled { opacity: .5; cursor: not-allowed; }
.form-note { margin-top: 11px; min-height: 32px; font-size: 10px; color: #5f7480; line-height: 1.6; }
.noscript-note { margin-top: 12px; color: #456a7c; font-size: 12px; }

/* 页脚：本地预览标记始终可见，回到顶部是正常锚点而不是脚本滚动假操作。 */
.site-footer { background: var(--white); border-top: 1px solid var(--line); color: var(--muted); }
.footer-inner { min-height: 99px; display: flex; align-items: center; gap: 32px; }
.footer-company { display: block; flex-shrink: 0; }
/* 白底中文标识与整个浅色页脚融为一体；保留蓝金原色与完整比例，不反相、不裁切。 */
.footer-company img { display: block; width: 320px; max-width: 100%; height: auto; }
.footer-inner > p { font-size: 12px; }
.preview-label { margin-left: auto; display: inline-flex; align-items: center; gap: 7px; font-size: 11px; }
.preview-label > span { width: 5px; height: 5px; background: var(--gold); border-radius: 50%; }
.back-top { display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink); }
.back-top:hover { background: var(--surface); border-color: var(--ink); }

/* 1024 像素级桌面适配：收紧栏间距和字号，但保留所有功能与内容，不隐藏关键操作。 */
@media (max-width: 1150px) {
  .container { width: calc(100% - 80px); }
  .header-inner { min-height: 122px; }
  .brand-logo { width: 320px; }
  .primary-nav { gap: 16px; font-size: 12px; }
  .nav-cta { gap: 21px; padding: 9px 14px; }
  .hero { gap: 30px; padding-top: 61px; padding-bottom: 63px; grid-template-columns: 1.16fr 1fr; }
  h1 { font-size: 49px; }
  .hero-description { font-size: 14px; }
  .hero-actions { gap: 19px; }
  .hero-actions .button { padding: 12px 15px; gap: 17px; font-size: 12px; }
  .hero-actions .text-link { font-size: 11px; gap: 12px; }
  .hero-art { min-height: 400px; }
  .hero-footnote { font-size: 9px; column-gap: 6px; margin-top: 33px; }
  .section { padding-top: 79px; padding-bottom: 83px; }
  .section-heading { grid-template-columns: .5fr 2fr; gap: 24px; }
  .section-heading h2 { font-size: 30px; }
  .section-intro { font-size: 11px; }
  .service-grid { gap: 18px; margin-top: 41px; }
  .service-card { padding: 23px 21px; }
  .service-card h3 { font-size: 21px; }
  .service-card > p { font-size: 13px; min-height: 96px; }
  .service-tags { margin-top: 22px; }
  .scenarios-inner { gap: 45px; grid-template-columns: .83fr 1.17fr; }
  .scenario-copy h2 { font-size: 30px; }
  .demo-body { padding: 25px 25px 24px; }
  .demo-body h3 { font-size: 21px; }
  .demo-flow > li { gap: 11px; }
  .demo-flow li > div > span { font-size: 9px; }
  .demo-description { min-height: 69px; }
  .approach-grid { gap: 22px; margin-top: 42px; }
  .approach-grid h3 { font-size: 17px; }
  .approach-grid li > p:not(.step-english) { font-size: 11px; min-height: 88px; }
  .about-section { gap: 58px; padding: 50px; margin-bottom: 82px; }
  .about-copy h2 { font-size: 30px; }
  .about-copy > p:not(.eyebrow) { font-size: 12px; }
  .contact-inner { gap: 54px; }
  .contact-copy h2 { font-size: 42px; }
  .requirement-card { padding: 26px; }
  .requirement-heading { align-items: flex-start; flex-direction: column; gap: 4px; }
  .footer-inner { gap: 22px; }
}

/* 较窄窗口的基础流式排版：防止浏览器缩放造成截断；本次正式交付验收仍限 PC 两档视口。 */
@media (max-width: 850px) {
  .container { width: calc(100% - 40px); }
  .header-inner { flex-wrap: wrap; justify-content: center; padding-top: 20px; padding-bottom: 19px; gap: 20px; }
  .primary-nav { gap: 22px; flex-wrap: wrap; justify-content: center; }
  .hero { grid-template-columns: 1fr; gap: 38px; }
  h1 { font-size: clamp(36px, 7vw, 56px); }
  .hero-art { max-width: 540px; width: 100%; min-height: 0; justify-self: center; }
  .principles-strip .container { align-items: flex-start; flex-direction: column; padding-top: 20px; padding-bottom: 20px; gap: 9px; }
  .principles-strip .container > span:last-child { gap: 20px; }
  .section-heading { grid-template-columns: 1fr; gap: 18px; }
  .section-heading > div { align-items: flex-start; flex-direction: column; gap: 19px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card > p { min-height: 0; }
  .scenarios-inner { grid-template-columns: 1fr; }
  .scenario-tabs { grid-template-columns: repeat(3, 1fr); gap: 15px; }
  .scenario-tabs button { font-size: 13px; gap: 9px; }
  .scenario-tabs .tab-arrow { font-size: 17px; }
  .scenario-demo { margin-right: 12px; }
  .demo-description { min-height: 0; }
  .approach-grid { grid-template-columns: repeat(2, 1fr); row-gap: 35px; }
  .approach-grid li > p:not(.step-english) { min-height: 66px; }
  .about-section { grid-template-columns: 1fr; gap: 36px; padding: 35px 28px; }
  .about-mark img { max-width: 400px; }
  .about-mark { align-items: flex-start; gap: 17px; }
  .contact-inner { grid-template-columns: 1fr; gap: 38px; }
  .contact-note { margin-top: 30px; }
  .footer-inner { flex-wrap: wrap; padding-top: 26px; padding-bottom: 26px; gap: 15px; }
  .preview-label { margin-left: 0; }
  .back-top { margin-left: auto; }
}

/* 实际系统入口：整齐的卡片与固定底部行动区；状态和按钮分开，避免把说明误认为操作。 */
#system-demos { border-bottom: 1px solid var(--line); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.demo-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 44px; }
.demo-card { display: flex; flex-direction: column; align-items: flex-start; min-width: 0; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.demo-card:focus-within { border-color: var(--blue); }
.demo-number { font-size: 12px; letter-spacing: .08em; color: var(--muted); }
.demo-state { display: inline-block; margin-top: 16px; padding: 3px 9px; border-radius: 2px; background: #edf3f6; color: var(--ink); font-size: 12px; line-height: 1.6; }
.demo-card h3 { margin-top: 18px; font-size: 24px; letter-spacing: -.025em; }
.demo-card > p { margin-top: 13px; margin-bottom: 25px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.demo-link { display: inline-flex; justify-content: space-between; align-items: center; gap: 24px; min-height: 46px; margin-top: auto; padding: 10px 16px; border: 1px solid var(--ink); border-radius: var(--radius); background: var(--dark); color: var(--white); font-size: 14px; font-weight: 600; }
.demo-link:hover { background: var(--blue); border-color: var(--blue); }
.demo-link[aria-disabled="true"] { background: var(--surface); color: var(--muted); border-color: var(--line); cursor: default; }
@media (max-width: 1150px) {
  .demo-grid { gap: 18px; }
  .demo-card { padding: 24px 20px; }
  .demo-card h3 { font-size: 21px; }
}
@media (max-width: 850px) {
  .demo-grid { grid-template-columns: 1fr; }
  .demo-card { padding: 26px; }
}

/* 尊重减少动态效果的系统设置：停用平滑滚动，页面本身不包含持续动画。 */
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* 打印时保留内容与表单说明，去除深背景和纯装饰图形，避免浪费大量打印墨水。 */
@media print {
  body, .scenarios-section, .contact-section, .site-footer { background: white; color: black; }
  .site-header, .hero-art, .hero-actions, .skip-link, .back-top { display: none; }
  .container { width: 100%; }
  .hero, .section, .scenarios-section, .contact-section { padding-top: 25px; padding-bottom: 25px; }
  .hero { display: block; }
  .scenario-demo { box-shadow: none; }
  .scenario-copy .eyebrow, .scenario-intro, .scenario-disclaimer, .contact-copy > p, .contact-note p, .footer-company, .preview-label { color: #333; }
  a { text-decoration: underline; }
}

.footer-inner {flex-wrap:wrap;padding-top:20px;padding-bottom:20px;}
.icp-link {font-size:12px;white-space:nowrap;text-decoration:underline;}

/* Filing number has its own bottom row, below the company identity. */
.footer-filing { text-align: center; padding-top: 4px; padding-bottom: 24px; }
/* 2026-10-08: desktop visual refinement; content, routes and interactions unchanged. */
:root {
  --ink: #172f3c;
  --muted: #536773;
  --dark: #103f53;
  --blue: #216781;
  --surface: #f3f5f5;
  --line: #dbe3e5;
  --gold: #dbab4d;
  --radius: 10px;
  --body-font: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", "Segoe UI", sans-serif;
}
body { font-size: 16px; line-height: 1.85; }
.container { width: calc(100% - 120px); max-width: 1240px; }
h1, h2, h3 { font-weight: 600; }
.eyebrow { font-size: 12px; letter-spacing: .14em; color: #496875; }
.site-header { background: #fff; }
.header-inner { min-height: 98px; gap: 22px; }
.brand-logo { width: 350px; }
.primary-nav { gap: 24px; font-size: 14px; }
.nav-cta { border-radius: 6px; border-color: #cbd8de; padding: 10px 17px; gap: 22px; }
.hero { gap: 66px; padding-top: 68px; padding-bottom: 72px; grid-template-columns: 1.1fr 1fr; }
h1 { font-size: clamp(48px, 4.4vw, 64px); line-height: 1.36; letter-spacing: -.035em; margin-top: 24px; }
.word-software > svg { bottom: 0; opacity: .8; }
.hero-description { font-size: 18px; line-height: 1.9; margin-top: 26px; }
.hero-actions { margin-top: 32px; gap: 26px; }
.button { font-size: 15px; padding: 14px 22px; border-radius: 6px; }
.text-link { font-size: 14px; }
.hero-footnote { font-size: 12px; margin-top: 33px; }
.hero-art { min-height: 425px; background: #103f53; border-radius: 14px; box-shadow: 0 22px 50px -30px #123c5360; }
.art-topline,.art-bottomline { font-size: 12px; margin-left: 28px; margin-right: 28px; }
.art-index { font-size: 10px; }
.principles-strip { background: #f7f8f7; }
.principles-strip .container { min-height: 74px; font-size: 14px; }
.principles-strip .container > span:last-child { font-size: 13px; }
.section { padding-top: 88px; padding-bottom: 88px; }
.section-heading { grid-template-columns: 1fr; gap: 20px; }
.section-heading > .eyebrow { padding: 0; }
.section-heading > div { display: grid; grid-template-columns: 1.2fr 1fr; align-items: end; gap: 60px; }
h2 { font-size: 38px; line-height: 1.45; letter-spacing: -.025em; }
.section-intro { font-size: 15px; line-height: 1.9; padding: 0; }
#system-demos { position: relative; border: 0; }
#system-demos::before { content: ""; position: absolute; z-index: -1; inset: 0 calc((100vw - 100%) / -2); background: #f6f7f5; }
.demo-grid { gap: 24px; margin-top: 36px; }
.demo-card { padding: 30px; border: 1px solid #dce3e3; border-top: 3px solid #b6cbd2; border-radius: 10px; box-shadow: 0 6px 24px -18px #193d5040; }
.demo-card:nth-child(2) { border-top-color: #aab9c9; }
.demo-card:nth-child(3) { border-top-color: #d4b46a; }
.demo-number { font-size: 12px; letter-spacing: .1em; }
.demo-state { border-radius: 4px; background: #eef3f4; padding: 4px 9px; }
.demo-card h3 { font-size: 25px; line-height: 1.5; margin-top: 18px; }
.demo-card > p { font-size: 15px; line-height: 1.9; margin-bottom: 28px; }
.demo-link { font-size: 14px; border-radius: 6px; }
#system-demos > .section-intro { font-size: 13px; margin-top: 20px; }
.service-grid { margin-top: 38px; gap: 30px; }
.service-card { padding: 28px 0 24px; border-top: 1px solid #9db4be; background: transparent; }
.service-card:hover { background: transparent; }
.service-card h3 { font-size: 24px; margin-top: 22px; }
.service-card > p { font-size: 15px; min-height: 110px; line-height: 1.9; }
.service-tags > li { font-size: 12px; }
.service-number { font-size: 12px; }
.service-tags { margin-top: 20px; }
.scenarios-section { padding: 80px 0; background: #103f53; }
.scenarios-inner { gap: 65px; }
.scenario-copy h2 { font-size: 36px; line-height: 1.5; }
.scenario-intro { font-size: 15px; }
.scenario-demo { border-radius: 10px; }
.scenario-disclaimer { font-size: 12px; }
.approach-grid { gap: 28px; margin-top: 40px; }
.approach-grid li > p:not(.step-english) { font-size: 14px; min-height: 100px; line-height: 1.85; }
.step-output { font-size: 12px; margin-top: 20px; }
.step-english { font-size: 10px; letter-spacing: .1em; }
.about-section { border-radius: 12px; background: #f6f7f5; border: 1px solid #e1e7e6; padding: 54px; gap: 68px; margin-bottom: 88px; }
.about-mark img { border-radius: 6px; }
.about-copy .eyebrow { font-size: 11px; }
.about-copy h2 { font-size: 34px; }
.about-copy > p:not(.eyebrow) { font-size: 15px; line-height: 1.95; }
.about-copy .text-link { font-size: 14px; }
.contact-section { background: #103f53; padding: 80px 0; }
.contact-inner { gap: 80px; }
.contact-copy h2 { font-size: 48px; }
.contact-copy > p:not(.eyebrow) { font-size: 16px; }
.contact-note strong { font-size: 14px; }
.contact-note p { font-size: 13px; }
.blank-download { font-size: 13px; }
.requirement-card { padding: 32px; border-radius: 12px; }
.requirement-heading h3 { font-size: 20px; }
.requirement-heading > span { font-size: 11px; }
#requirement-form label { font-size: 14px; }
#requirement-form label > span { font-size: 12px; }
#requirement-form select,#requirement-form textarea { font-size: 14px; border-radius: 5px; }
.form-note { font-size: 12px; }
.footer-inner { min-height: 112px; }
.footer-company img { width: 310px; }
.footer-filing { border-top: 1px solid #edf0f1; padding-top: 18px; padding-bottom: 22px; }
.icp-link { color: #586b75; font-size: 12px; }
@media (min-width:851px) and (max-width:1150px) {
 .container { width: calc(100% - 80px); }
 .brand-logo { width: 290px; }
 .primary-nav { gap: 17px; font-size: 13px; }
 .hero { gap: 36px; padding-top: 55px; padding-bottom: 55px; }
 h1 { font-size: 48px; }
 .hero-description { font-size: 16px; }
 .hero-art { min-height: 375px; }
 .hero-actions { gap: 16px; }
 .hero-footnote { font-size: 11px; }
 .section-heading > div { grid-template-columns: 1.15fr 1fr; gap: 38px; }
 h2 { font-size: 33px; }
 .section-intro { font-size: 14px; }
 .demo-card { padding: 25px 22px; }
 .demo-card h3 { font-size: 22px; }
 .scenarios-inner { gap: 40px; }
 .about-section { padding: 40px; gap: 42px; }
 .contact-inner { gap: 48px; }
}
@media (max-width:850px) {
 .container { width: calc(100% - 40px); }
 .section-heading > div { grid-template-columns: 1fr; gap: 20px; }
 .hero { grid-template-columns: 1fr; }
 h1 { font-size: clamp(36px,7vw,56px); }
}
@media print { #system-demos::before { display:none; } .hero-art,.demo-card { box-shadow:none; } }

/* The brand anchors both header rows; controls and navigation share the right column. */
.header-inner { display: grid; grid-template-columns: 350px minmax(0,1fr); grid-template-rows: auto auto; gap: 7px 28px; padding: 12px 0; }
.brand { grid-column: 1; grid-row: 1 / 3; min-width: 0; align-self: center; }
.primary-nav { grid-column: 2; grid-row: 2; justify-content: flex-end; flex-wrap: wrap; gap: 8px 20px; }
.language-control { grid-column: 2; grid-row: 1; justify-self: end; align-self: center; }
.language-control select { min-height: 42px; min-width: 144px; padding: 7px 32px 7px 12px; border: 1px solid #9db4be; border-radius: 5px; background: #fff; color: var(--ink); font: inherit; font-size: 14px; cursor: pointer; }
.language-control select:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }
@media (min-width:851px) and (max-width:1150px) {
  .header-inner { grid-template-columns: 290px minmax(0,1fr); gap: 5px 22px; }
  .primary-nav { gap: 6px 16px; }
}
@media (max-width:850px) {
  .header-inner { grid-template-columns: minmax(0,1fr) auto; }
  .brand { grid-row: 1; }
  .brand-logo { width: min(320px,100%); }
  .primary-nav { grid-column: 1 / -1; justify-content: flex-start; }
}

/* Latin translations need room for whole words beside the fixed illustration. */
html:not([lang="zh-CN"]):not([lang="ja"]) .hero h1 { font-size: clamp(42px, 3.8vw, 54px); }
html:not([lang="zh-CN"]):not([lang="ja"]) body { font-family: Arial, "Segoe UI", system-ui, sans-serif; }
@media (min-width:851px) and (max-width:1150px) {
  html:not([lang="zh-CN"]):not([lang="ja"]) .hero h1 { font-size: 40px; }
}