:root {
  --white: #ffffff;
  --ink: #061a3d;
  --ink-2: #17345f;
  --muted: #5d708f;
  --blue: #0b5cff;
  --blue-dark: #0847c6;
  --cyan: #41c9ff;
  --line: #dbe6f4;
  --line-strong: #c7d8ee;
  --pale: #f5f9ff;
  --navy: #041a3c;
  --navy-2: #062557;
  --green: #1c9a64;
  --shadow: 0 24px 70px rgba(14, 57, 115, .16), 0 4px 16px rgba(14, 57, 115, .08);
  --shadow-soft: 0 14px 36px rgba(14, 57, 115, .08), 0 2px 8px rgba(14, 57, 115, .05);
  --radius: 18px;
  --radius-card: 14px;
  --radius-control: 8px;
  --max: 1240px;
  --header-h: 72px;
  --font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 82px; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: var(--font); -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
svg { fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8; }
.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; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 1000; padding: 12px 18px; border-radius: 8px; background: var(--ink); color: white; transition: top .2s ease; }
.skip-link:focus { top: 12px; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 100; height: var(--header-h); background: rgba(255,255,255,.92); border-bottom: 1px solid rgba(199,216,238,.76); backdrop-filter: blur(16px); transition: box-shadow .25s ease; }
.site-header.scrolled { box-shadow: 0 8px 32px rgba(7,39,88,.08); }
.nav-shell { max-width: 1360px; height: 100%; margin: auto; padding: 0 36px; display: flex; align-items: center; gap: 42px; }
.brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; font-size: 20px; font-weight: 720; letter-spacing: -.02em; }
.brand b { color: var(--ink-2); font-weight: 680; }
.brand-mark { display: block; width: 40px; height: 40px; flex: 0 0 auto; object-fit: contain; }
.primary-nav { display: flex; align-items: center; justify-content: center; gap: 38px; flex: 1; }
.primary-nav a { position: relative; padding: 24px 2px; font-size: 15px; font-weight: 650; color: var(--ink-2); }
.primary-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 17px; height: 2px; border-radius: 2px; background: var(--blue); transition: right .25s ease; }
.primary-nav a:hover::after, .primary-nav a:focus-visible::after { right: 0; }
.language-switch { display: flex; align-items: center; gap: 7px; flex: 0 0 auto; color: #8b9ab0; font-size: 13px; }
.language-switch button { border: 0; padding: 8px 2px; background: transparent; color: #8b9ab0; cursor: pointer; font-size: 13px; font-weight: 650; }
.language-switch button.is-active { color: var(--blue); }
.menu-toggle { display: none; }

.hero { position: relative; min-height: 890px; overflow: hidden; padding-top: var(--header-h); background: white; }
.hero-image { position: absolute; inset: var(--header-h) 0 0; width: 100%; height: 815px; object-fit: cover; object-position: center top; }
.hero-shell { position: relative; max-width: var(--max); min-height: 815px; margin: 0 auto; padding: 82px 0 0; }
.hero-copy { position: relative; z-index: 2; width: min(570px, 47vw); }
.hero h1 { max-width: 550px; margin: 0 0 20px; font-size: clamp(48px, 5vw, 72px); line-height: 1.07; letter-spacing: -.055em; font-weight: 760; text-wrap: balance; }
.hero-english { max-width: 520px; margin: 0 0 25px; color: var(--ink-2); font-size: 19px; line-height: 1.45; font-weight: 520; letter-spacing: -.015em; }
.hero-support { max-width: 520px; margin: 0 0 18px; color: #526783; font-size: 16px; line-height: 1.72; }
.hero-positioning { max-width: 520px; margin: 0 0 28px; padding: 7px 0 7px 11px; border-left: 3px solid var(--blue); color: var(--ink-2); font-size: 14px; line-height: 1.5; font-weight: 680; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 23px; border: 1px solid transparent; border-radius: 7px; cursor: pointer; font-size: 15px; font-weight: 680; letter-spacing: -.01em; transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease; }
.button svg { width: 20px; height: 20px; stroke-width: 2; }
.button-primary { color: white; background: var(--blue); box-shadow: 0 10px 24px rgba(11,92,255,.2); }
.button-primary:hover, .button-primary:focus-visible { transform: translateY(-2px); background: var(--blue-dark); box-shadow: 0 14px 28px rgba(11,92,255,.28); }
.hero-actions .button-primary { min-width: 222px; min-height: 52px; }
.button-secondary { color: var(--blue); background: rgba(255,255,255,.72); border-color: rgba(72,122,192,.38); box-shadow: 0 6px 18px rgba(14,57,115,.04); }
.button-secondary:hover, .button-secondary:focus-visible { transform: translateY(-2px); background: white; border-color: var(--blue); }

.hero-product-preview { position: absolute; z-index: 3; left: 50%; bottom: -132px; width: min(1120px, 92vw); height: 340px; transform: translateX(-50%); overflow: hidden; background: white; border: 1px solid rgba(185,207,233,.9); border-radius: 14px; box-shadow: var(--shadow); }
.preview-topbar { height: 48px; padding: 0 18px; display: flex; align-items: center; gap: 8px; border-bottom: 1px solid var(--line); color: var(--ink); font-size: 12px; }
.preview-logo-icon { width: 20px; height: 20px; flex: 0 0 auto; object-fit: contain; }
.preview-window-controls { margin-left: auto; display: flex; gap: 13px; }
.preview-window-controls i { width: 8px; height: 8px; border: 1px solid #8aa0be; border-radius: 50%; }
.preview-body { height: calc(100% - 48px); display: grid; grid-template-columns: 130px 1fr 300px; }
.preview-body aside { padding: 28px 20px; background: #f7faff; border-right: 1px solid var(--line); }
.preview-nav-item { display: block; height: 12px; margin-bottom: 22px; border-radius: 3px; background: #d7e3f3; }
.preview-nav-item.active { width: 90px; background: #75a8f2; }
.preview-table { padding: 22px 26px; }
.preview-toolbar { display: grid; grid-template-columns: 110px 140px 1fr; gap: 8px; margin-bottom: 20px; }
.preview-toolbar span { height: 24px; border: 1px solid var(--line); border-radius: 5px; }
.preview-row { height: 36px; border-bottom: 1px solid var(--line); position: relative; }
.preview-row::before, .preview-row::after { content: ""; position: absolute; top: 13px; height: 8px; border-radius: 4px; background: #dce6f2; }
.preview-row::before { left: 0; width: 37%; }.preview-row::after { right: 5%; width: 22%; }
.preview-row.header { height: 26px; background: #f7f9fc; }
.preview-insight { display: grid; place-items: center; border-left: 1px solid var(--line); background: linear-gradient(180deg,#fbfdff,#f6faff); }
.preview-insight svg { width: 85%; color: var(--blue); }
.scroll-cue { position: absolute; z-index: 4; left: 50%; bottom: 16px; width: 30px; height: 44px; transform: translateX(-50%); border: 1px solid #aac2e1; border-radius: 16px; }
.scroll-cue span { position: absolute; left: 50%; top: 9px; width: 4px; height: 7px; transform: translateX(-50%); border-radius: 2px; background: var(--blue); animation: scroll-cue 1.8s infinite; }
@keyframes scroll-cue { 0%,100% { opacity: .3; transform: translate(-50%,0); } 50% { opacity: 1; transform: translate(-50%,13px); } }

.section { position: relative; padding: 108px 0; }
.section-shell { width: min(var(--max), calc(100% - 72px)); margin: 0 auto; }
.section-heading { margin-bottom: 58px; }
.section-heading h2, .security-heading h2, .product-heading h2 { margin: 0 0 17px; font-size: clamp(34px, 3.3vw, 48px); line-height: 1.17; letter-spacing: -.045em; }
.section-heading p, .security-heading p, .product-heading > p { max-width: 660px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.75; }

.scenarios { padding-top: 132px; }
.scenario-list { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.scenario { position: relative; min-height: 318px; padding: 38px 26px 34px; border: 1px solid var(--line); border-radius: var(--radius-card); background: white; box-shadow: var(--shadow-soft); }
.scenario:last-child { border-right: 1px solid var(--line); }
.scenario svg { width: 47px; height: 47px; margin-bottom: 54px; color: var(--blue); stroke-width: 1.6; }
.scenario h3 { margin: 0 0 14px; font-size: 18px; line-height: 1.38; letter-spacing: -.02em; }
.scenario p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.78; }

.capabilities { background: var(--pale); }
.capability-rail { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.capability { min-height: 250px; padding: 34px; border: 1px solid var(--line); border-radius: var(--radius-card); background: rgba(255,255,255,.84); box-shadow: var(--shadow-soft); }
.capability:nth-child(3n+2), .capability:nth-child(3n+3) { padding-left: 38px; }
.capability:nth-child(3n+1), .capability:nth-child(3n+2) { border-right: 1px solid var(--line-strong); }
.capability:nth-child(n) { padding: 34px; border: 1px solid var(--line); }
.capability svg { width: 40px; height: 40px; margin-bottom: 30px; color: var(--blue); stroke-width: 1.7; }
.capability h3 { margin: 0 0 12px; font-size: 18px; letter-spacing: -.02em; }
.capability p { max-width: 300px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.72; }

.workflow { overflow: hidden; background: linear-gradient(180deg,#fff 0%,#fff 72%,#f6faff 100%); }
.workflow::after { content: ""; position: absolute; width: 580px; height: 580px; right: -260px; bottom: -260px; border: 1px solid #dcecff; border-radius: 50%; box-shadow: 0 0 0 28px #f5f9ff,0 0 0 29px #dcecff,0 0 0 68px #f9fbff,0 0 0 69px #e7f1ff; }
.workflow-heading { position: relative; z-index: 1; max-width: 730px; margin: 0 auto 72px; text-align: center; }
.workflow-heading h2 { margin: 0 0 18px; font-size: clamp(34px,3.2vw,48px); letter-spacing: -.045em; }
.workflow-heading > p:last-child { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.75; }
.workflow-steps { position: relative; z-index: 1; list-style: none; display: grid; grid-template-columns: repeat(5,1fr); gap: 0; margin: 0; padding: 0; }
.workflow-steps::before { content: ""; position: absolute; top: 29px; left: 9%; right: 9%; height: 1px; background: #9bc1f5; }
.workflow-steps li { position: relative; padding: 0 24px; text-align: center; }
.workflow-steps li > span { position: relative; z-index: 1; width: 58px; height: 58px; display: grid; place-items: center; margin: 0 auto 25px; border: 1px solid var(--blue); border-radius: 50%; background: white; color: var(--blue); font-size: 14px; font-weight: 760; box-shadow: 0 0 0 8px white; }
.workflow-steps h3 { margin: 0 0 10px; font-size: 17px; }
.workflow-steps p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.product { padding: 116px 0 108px; background: #f7faff; }
.product-heading { display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 50px; margin-bottom: 44px; }
.product-frame { overflow: hidden; min-height: 690px; border: 1px solid #cddced; border-radius: var(--radius); background: white; box-shadow: var(--shadow); }
.app-topbar { height: 60px; display: grid; grid-template-columns: 208px 1fr 132px; border-bottom: 1px solid var(--line); }
.app-brand { padding: 0 18px; display: flex; align-items: center; gap: 9px; background: var(--navy-2); color: white; font-size: 13px; font-weight: 700; }
.app-brand-icon { width: 20px; height: 20px; flex: 0 0 auto; object-fit: contain; }
.app-tabs { display: grid; grid-template-columns: repeat(3,1fr); }
.app-tabs button { position: relative; border: 0; border-right: 1px solid var(--line); background: white; color: #526783; display: flex; align-items: center; justify-content: center; gap: 8px; cursor: pointer; font-size: 13px; font-weight: 650; transition: color .2s ease, background .2s ease; }
.app-tabs button:hover, .app-tabs button:focus-visible { color: var(--blue); background: #f7faff; outline: 0; }
.app-tabs button::after { content: ""; position: absolute; left: 30%; right: 30%; bottom: -1px; height: 2px; background: transparent; }
.app-tabs button[aria-selected="true"] { color: var(--blue); background: #fbfdff; }
.app-tabs button[aria-selected="true"]::after { background: var(--blue); }
.app-tabs svg { width: 18px; height: 18px; }
.app-actions { display: flex; align-items: center; justify-content: flex-end; gap: 4px; padding-right: 13px; }
.app-actions button { width: 34px; height: 34px; display: grid; place-items: center; border: 0; background: white; color: #627897; }
.app-actions svg { width: 17px; height: 17px; }
.app-body { display: grid; grid-template-columns: 208px 1fr; min-height: 630px; }
.app-sidebar { padding: 22px 14px; background: linear-gradient(180deg,#082759,#061d43); color: white; }
.matter-name { margin: 0 8px 26px; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.13); }
.matter-name small { display: block; margin-bottom: 7px; color: #84a2cb; font-size: 10px; }
.matter-name b { display: block; font-size: 12px; line-height: 1.45; }
.app-sidebar nav { display: grid; gap: 4px; }
.app-sidebar a { height: 38px; padding: 0 12px; border-radius: 6px; display: flex; align-items: center; gap: 11px; color: #bbcae1; font-size: 12px; }
.app-sidebar a.active { background: #0b55c8; color: white; }
.app-sidebar a i { width: 13px; height: 13px; border: 1.5px solid currentColor; border-radius: 3px; }
.app-view { min-width: 0; min-height: 630px; }
.app-view.active { display: flex; }
.app-view[hidden] { display: none !important; }

#view-data { display: grid; grid-template-columns: 220px 1fr; }
.data-filter { padding: 22px 20px; border-right: 1px solid var(--line); background: #fbfdff; }
.data-filter h3 { margin: 0 0 22px; font-size: 15px; }
.data-filter label { display: grid; gap: 8px; margin-bottom: 18px; color: var(--muted); font-size: 10px; font-weight: 650; }
.data-filter select, .data-filter input[type="text"] { width: 100%; height: 34px; padding: 0 9px; border: 1px solid var(--line-strong); border-radius: var(--radius-control); background: white; color: var(--ink-2); font-size: 10px; }
.check-line { display: flex; align-items: center; gap: 7px; color: var(--ink-2); font-size: 11px; font-weight: 500; }
.check-line input { accent-color: var(--blue); }
.app-apply { width: 100%; height: 34px; border: 0; border-radius: var(--radius-control); background: var(--blue); color: white; font-size: 11px; font-weight: 650; cursor: pointer; }
.data-content { min-width: 0; }
.data-toolbar { height: 74px; padding: 0 24px; display: grid; grid-template-columns: auto 1fr 260px; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); }
.data-toolbar b { font-size: 14px; }.data-toolbar > span { color: var(--muted); font-size: 10px; }
.data-toolbar label { height: 32px; display: flex; align-items: center; gap: 7px; padding: 0 10px; border: 1px solid var(--line); border-radius: var(--radius-control); }
.data-toolbar label svg { width: 14px; height: 14px; color: #7387a5; }
.data-toolbar input { min-width: 0; width: 100%; border: 0; outline: 0; color: var(--ink-2); font-size: 10px; }
.data-table { padding: 0 22px 22px; }
.table-row { min-height: 55px; display: grid; grid-template-columns: minmax(210px,2.2fr) .7fr 1fr 1fr .8fr; align-items: center; border-bottom: 1px solid var(--line); color: #506480; font-size: 10px; }
.table-row > span { min-width: 0; padding-right: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table-row > span:first-child { display: flex; align-items: center; gap: 8px; color: var(--ink-2); }
.table-row b { overflow: hidden; text-overflow: ellipsis; font-size: 10.5px; }
.table-row.table-head { min-height: 36px; color: #8292a8; font-size: 10px; font-weight: 700; }
.table-row.selected { margin: 0 -8px; padding: 0 8px; border-radius: var(--radius-control); background: #edf5ff; }
.file { width: 22px; height: 26px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 3px; color: white; font-size: 8px; font-style: normal; font-weight: 800; }
.file.docx { background:#3779e8}.file.eml{background:#27a47a}.file.pdf{background:#ef615a}.file.csv{background:#56a963}.file.msg{background:#8a6ee0}
.status { color: var(--green); }

#view-review { display: grid; grid-template-columns: 1fr 270px; }
.review-document { background: #f4f7fb; }
.document-toolbar { height: 70px; padding: 0 22px; display: flex; align-items: center; justify-content: space-between; background: white; border-bottom: 1px solid var(--line); }
.document-toolbar > div:first-child { display: grid; gap: 6px; }
.document-toolbar b { font-size: 13px; }.document-toolbar span { color: var(--muted); font-size: 10px; }
.tool-icons { display: flex; align-items: center; gap: 8px; }.tool-icons button { width: 26px; height: 26px; border: 1px solid var(--line); border-radius: 4px; background: white; color: var(--ink-2); }.tool-icons > span { font-size: 10px; }
.document-page { width: min(540px,84%); min-height: 490px; margin: 30px auto; padding: 50px 58px; border: 1px solid #e1eaf5; border-radius: var(--radius-control); background: white; box-shadow: var(--shadow-soft); color: #263b58; }
.document-page h3 { margin: 0 0 36px; text-align: center; font-family: Georgia,"Songti SC",serif; font-size: 21px; letter-spacing: .04em; }
.document-page h4 { margin: 28px 0 12px; font-size: 12px; }
.document-page p { margin: 0; font-family: Georgia,"Songti SC",serif; font-size: 11px; line-height: 2; }
.document-page mark { padding: 1px 3px; background: #fff0a9; color: inherit; box-decoration-break: clone; }
.review-insights { padding: 0 18px 20px; border-left: 1px solid var(--line); background: white; }
.insight-tabs { height: 54px; display: grid; grid-template-columns: repeat(3,1fr); border-bottom: 1px solid var(--line); }
.insight-tabs button { border: 0; background: white; color: #788aa2; font-size: 10px; font-weight: 650; }.insight-tabs button.active { color: var(--blue); border-bottom: 2px solid var(--blue); }
.entity-group { padding: 15px 0; border-bottom: 1px solid var(--line); }.entity-group small { display: block; margin-bottom: 8px; color: #8798ad; font-size: 10px; font-weight: 700; }.entity-group span { display: inline-flex; margin: 0 5px 5px 0; padding: 5px 7px; border-radius: 4px; background: #edf5ff; color: #245da8; font-size: 10px; }
.review-note { display: flex; gap: 9px; margin-top: 18px; }.review-note i { width: 18px; height: 18px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: white; font-size: 10px; font-style: normal; }.review-note b { font-size: 10px; }.review-note p { margin: 5px 0 0; color: var(--muted); font-size: 10px; line-height: 1.6; }

#view-relationship { position: relative; display: block; }
.graph-toolbar { height: 70px; padding: 0 22px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.graph-toolbar > div { display: grid; gap: 5px; }.graph-toolbar b { font-size: 13px; }.graph-toolbar span { color: var(--muted); font-size: 10px; }.graph-toolbar select { height: 32px; padding: 0 28px 0 10px; border: 1px solid var(--line); border-radius: 5px; background: white; color: var(--ink-2); font-size: 10px; }
.graph-canvas { position: relative; height: 560px; overflow: hidden; background-image: radial-gradient(#dfeafb 1px, transparent 1px); background-size: 22px 22px; }
.graph-canvas > svg { width: 100%; height: 500px; }
.graph-lines { fill: none; stroke: #aac3e3; stroke-width: 1.3; }.graph-lines .dashed { stroke-dasharray: 6 6; stroke: #6fa0df; }
.node circle { fill: white; stroke: #72a6ea; stroke-width: 2; filter: drop-shadow(0 4px 8px rgba(16,67,140,.12)); }.node path { fill:none; stroke:#0b5cff; stroke-width:2; }.node text { fill:#1f3d66; stroke:none; font: 11px var(--font); font-weight:650; }.node.matter circle { fill: var(--blue); stroke: var(--blue); }.node.matter path { stroke:white; }.node.person circle { stroke:#5ab484; }.node.person path { stroke:#228257; }.node.org circle { stroke:#9778e5; }.node.org path { stroke:#6c49cb; }.node.doc circle { stroke:#e2a02a; }.node.doc path { stroke:#cf8500; }.node.small text { font-size:10px; }
.graph-legend { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); display: flex; gap: 20px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 7px; background: rgba(255,255,255,.93); box-shadow: 0 5px 16px rgba(16,67,140,.08); }
.graph-legend span { display: flex; align-items: center; gap: 5px; color: #657996; font-size: 10px; }.graph-legend i { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }.graph-legend i.person{background:#5ab484}.graph-legend i.org{background:#8a6ee0}.graph-legend i.doc{background:#e2a02a}.graph-legend i.matter{background:var(--blue)}

.view-summary { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 22px; margin-top: 34px; }
.view-summary h3 { margin: 0 0 7px; font-size: 18px; }.view-summary p { margin: 0; color: var(--muted); font-size: 14px; }
.view-dots { display: flex; gap: 8px; }.view-dots i { width: 25px; height: 3px; border-radius: 3px; background: #c4d6ed; }.view-dots i.active { background: var(--blue); }

.brand-story { position: relative; height: clamp(600px,44.45vw,720px); overflow: hidden; background: var(--navy); color: white; }
.brand-story > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.brand-story::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg,rgba(2,14,36,.68) 0%,rgba(2,20,48,.22) 34%,rgba(2,20,48,.02) 66%,rgba(2,20,48,0) 100%); pointer-events: none; }
.brand-story-shell { position: relative; z-index: 2; width: min(var(--max),calc(100% - 72px)); height: 100%; margin: auto; display: flex; align-items: flex-end; padding-bottom: 34px; }
.brand-story-copy { max-width: 730px; padding: 22px 26px 20px; border: 1px solid rgba(199,229,255,.2); border-radius: var(--radius-card); background: rgba(2,20,48,.38); box-shadow: 0 16px 44px rgba(0,13,36,.14); backdrop-filter: blur(7px); text-shadow: 0 2px 18px rgba(0,18,50,.38); }
.brand-story h2 { margin: 11px 0 9px; font-size: clamp(38px,3.4vw,52px); line-height: 1; letter-spacing: -.045em; }
.brand-story h3 { margin: 0 0 12px; color: #cbeeff; font-size: 19px; font-weight: 560; }
.brand-story p { margin: 0 0 8px; color: #e1ebf8; font-size: 14px; line-height: 1.62; }

.security { padding-bottom: 116px; }
.security-heading { margin-bottom: 58px; }
.security-list { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.security-list article { min-height: 286px; padding: 38px 28px; border: 1px solid var(--line); border-radius: var(--radius-card); background: white; box-shadow: var(--shadow-soft); }.security-list article:last-child { border-right: 1px solid var(--line); }
.security-list svg { width: 48px; height: 48px; margin-bottom: 46px; color: var(--blue); stroke-width: 1.55; }
.security-list h3 { margin: 0 0 13px; font-size: 17px; }.security-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }

.download { position: relative; min-height: 470px; overflow: hidden; display: grid; place-items: center; border-top: 1px solid #edf3fb; background: linear-gradient(180deg,#fff 0,#f4f9ff 100%); }
.download-contours { position: absolute; inset: 0; opacity: .52; background:
  radial-gradient(ellipse at 50% 120%,transparent 0 28%,#d9eaff 28.2% 28.5%,transparent 28.7% 36%,#d9eaff 36.2% 36.5%,transparent 36.7% 45%,#d9eaff 45.2% 45.5%,transparent 45.7%),
  linear-gradient(165deg,transparent 67%,rgba(83,142,224,.08) 67.2%,transparent 67.5%);
}
.download-shell { position: relative; z-index: 1; width: min(760px,calc(100% - 48px)); padding: 80px 0; text-align: center; }
.download-app-preview { width: fit-content; margin: 0 auto 24px; display: flex; align-items: center; gap: 13px; text-align: left; }
.download-app-preview img { width: 72px; height: 72px; object-fit: contain; }
.download-app-preview div { display: grid; gap: 3px; }
.download-app-preview b { color: var(--ink); font-size: 15px; letter-spacing: -.02em; }
.download-app-preview span { color: #758ba7; font-size: 13px; }
.download h2 { margin: 0 0 18px; font-size: clamp(34px,3.4vw,48px); letter-spacing: -.045em; }
.download-shell > p:not(.system-note) { max-width: 630px; margin: 0 auto; color: var(--muted); font-size: 15px; line-height: 1.75; }
.download-actions { display: flex; align-items: center; justify-content: center; gap: 26px; margin-top: 34px; }
.download-actions .button { min-width: 220px; border: 0; }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--blue); font-size: 14px; font-weight: 680; }.text-link svg { width: 18px; height: 18px; transition: transform .2s ease; }.text-link:hover svg { transform: translateX(4px); }
.release-meta { max-width: 660px; margin: 24px auto 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.release-meta span { padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.76); color: #657996; font-size: 13px; line-height: 1.35; }
.system-note { margin: 25px 0 0; color: #8799b1; font-size: 13px; letter-spacing: .04em; }

html[lang="en"] .primary-nav { gap: 30px; }
html[lang="en"] .hero-copy { width: min(620px,50vw); }
html[lang="en"] .hero h1 { max-width: 620px; font-size: clamp(46px,4.7vw,68px); }
html[lang="en"] .button { padding-inline: 20px; }

.site-footer { position: relative; overflow: hidden; color: #dbe9fb; background: linear-gradient(180deg,#062554,#041a3d); }
.footer-mountains { position: absolute; inset: auto 0 0; height: 190px; opacity: .2; background: linear-gradient(145deg,transparent 0 12%,#4985c5 12.2% 22%,transparent 22.2% 31%,#2d669f 31.2% 42%,transparent 42.2% 55%,#4985c5 55.2% 67%,transparent 67.2%); clip-path: polygon(0 90%,12% 48%,22% 76%,38% 34%,51% 79%,68% 43%,80% 68%,91% 30%,100% 72%,100% 100%,0 100%); }
.footer-shell { position: relative; z-index: 1; width: min(var(--max),calc(100% - 72px)); margin: auto; padding: 80px 0 68px; display: grid; grid-template-columns: 1.15fr 2.85fr; gap: 70px; }
.brand.inverse { color: white; }.brand.inverse b { color: #9edfff; }.footer-brand p { max-width: 280px; margin: 24px 0 0; color: #9eb4d1; font-size: 14px; line-height: 1.7; }
.footer-links { display: grid; grid-template-columns: repeat(5,1fr); gap: 28px; }
.footer-links h3 { margin: 4px 0 22px; color: white; font-size: 13px; }
.footer-links a { display: block; margin-bottom: 14px; color: #9eb4d1; font-size: 12px; line-height: 1.45; transition: color .2s ease; }.footer-links a:hover { color: white; }
.footer-bottom { position: relative; z-index: 1; width: min(var(--max),calc(100% - 72px)); margin: auto; padding: 22px 0 28px; display: flex; justify-content: space-between; border-top: 1px solid rgba(183,209,239,.16); color: #7894b8; font-size: 13px; }

.toast { position: fixed; z-index: 200; left: 50%; bottom: 28px; max-width: min(540px,calc(100% - 32px)); padding: 14px 18px; display: flex; align-items: center; gap: 10px; transform: translate(-50%,30px); opacity: 0; pointer-events: none; border: 1px solid #c7dbf5; border-radius: 9px; background: rgba(255,255,255,.96); color: var(--ink-2); box-shadow: 0 16px 40px rgba(6,42,94,.18); font-size: 13px; transition: opacity .25s ease,transform .25s ease; }
.toast.show { opacity: 1; transform: translate(-50%,0); }.toast svg { width: 20px; height: 20px; flex: 0 0 auto; color: var(--blue); }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .72s ease,transform .72s cubic-bezier(.22,1,.36,1); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1120px) {
  .nav-shell { padding: 0 24px; }.primary-nav { gap: 28px; }
  .hero-shell { padding-left: 40px; padding-right: 40px; }
  .hero-image { object-position: 58% top; }
  .scenario { padding-left: 20px; padding-right: 20px; }
  .app-topbar { grid-template-columns: 170px 1fr 92px; }.app-body { grid-template-columns: 170px 1fr; }
  #view-data { grid-template-columns: 190px 1fr; }.data-toolbar { grid-template-columns: auto 1fr 210px; }
  .footer-shell { grid-template-columns: 1fr; }.footer-links { max-width: 850px; }
}

@media (max-width: 900px) {
  :root { --header-h: 66px; }
  .nav-shell { padding: 0 18px; gap: 16px; }
  .menu-toggle { width: 42px; height: 42px; margin-left: auto; padding: 11px; display: grid; gap: 5px; border: 0; border-radius: 7px; background: transparent; }
  .menu-toggle > span:not(.sr-only) { width: 20px; height: 2px; display: block; background: var(--ink); transition: transform .2s ease,opacity .2s ease; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(7px) rotate(45deg); }.menu-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }.menu-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .primary-nav { position: fixed; inset: var(--header-h) 0 auto; padding: 28px 24px 36px; display: grid; gap: 0; transform: translateY(-120%); background: rgba(255,255,255,.98); border-bottom: 1px solid var(--line); box-shadow: 0 18px 40px rgba(10,47,99,.1); transition: transform .28s ease; }
  .primary-nav.open { transform: none; }.primary-nav a { padding: 15px 0; border-bottom: 1px solid var(--line); }.primary-nav a::after { display: none; }
  .language-switch { order: 1; }
  .hero { min-height: 860px; }.hero-image { height: 700px; object-position: 61% top; }.hero-shell { min-height: 700px; padding: 80px 30px 0; }.hero-copy { width: min(620px,90%); }.hero h1 { font-size: clamp(45px,8vw,64px); }.hero-product-preview { bottom: -130px; }
  .section { padding: 92px 0; }.section-shell { width: min(var(--max),calc(100% - 42px)); }.section-heading,.security-heading { grid-template-columns: 64px 1fr; }
  .scenario-list,.security-list { grid-template-columns: repeat(2,1fr); }.scenario:nth-child(n),.security-list article:nth-child(n) { border: 1px solid var(--line); }
  .capability-rail { grid-template-columns: repeat(2,1fr); }.capability:nth-child(n) { padding: 34px 30px; border-right: 0; }.capability:nth-child(odd) { border-right: 1px solid var(--line-strong); }
  .workflow-steps { grid-template-columns: 1fr; max-width: 560px; margin: auto; }.workflow-steps::before { top: 0; bottom: 0; left: 29px; right: auto; width: 1px; height: auto; }.workflow-steps li { display: grid; grid-template-columns: 58px 1fr; gap: 24px; align-items: start; padding: 0 0 34px; text-align: left; }.workflow-steps li > span { margin: 0; }.workflow-steps p { max-width: 360px; }
  .product-heading { grid-template-columns: 1fr; gap: 12px; }.product-frame { min-height: 610px; }.app-topbar { grid-template-columns: 150px 1fr 74px; }.app-body { grid-template-columns: 150px 1fr; }.app-view { min-height: 550px; }
  #view-data { grid-template-columns: 160px 1fr; }.data-filter { padding: 18px 14px; }.data-toolbar { grid-template-columns: auto 1fr; }.data-toolbar label { grid-column: 1/-1; }.data-toolbar { height: 90px; }.table-row { grid-template-columns: minmax(190px,2fr) .7fr 1fr; }.table-row > span:nth-child(4),.table-row > span:nth-child(5) { display:none; }
  #view-review { grid-template-columns: 1fr 210px; }.document-page { padding: 38px 38px; }.graph-canvas > svg { min-width: 760px; transform: translateX(-70px); }
  .brand-story { height: 650px; }.brand-story > img { object-position: 61% center; }.brand-story-shell { width: calc(100% - 42px); }.brand-story-copy { max-width: 620px; }
  .footer-shell { width: calc(100% - 42px); }.footer-links { grid-template-columns: repeat(3,1fr); row-gap: 36px; }.footer-bottom { width: calc(100% - 42px); }
}

@media (max-width: 640px) {
  .brand { font-size: 17px; }.brand-mark { width: 34px; height: 34px; }.language-switch { gap: 4px; }
  .hero { min-height: 760px; }.hero-image { height: 610px; object-position: 64% top; opacity: .78; }.hero-shell { min-height: 610px; padding: 70px 20px 0; }.hero-copy { width: 100%; }.hero h1 { max-width: 480px; font-size: clamp(42px,13vw,58px); }.hero-english { max-width: 350px; font-size: 16px; }.hero-support { max-width: 420px; color: #405773; font-size: 15px; }.hero-actions { flex-direction: column; align-items: stretch; max-width: 310px; }.hero-product-preview { height: 230px; bottom: -82px; border-radius: 10px; }.preview-body { grid-template-columns: 82px 1fr; }.preview-insight { display:none; }.preview-body aside { padding: 20px 12px; }.preview-topbar { height: 40px; }.preview-toolbar { grid-template-columns: 70px 90px 1fr; }.scroll-cue { display:none; }
  .scenarios { padding-top: 110px; }.section { padding: 76px 0; }.section-shell { width: calc(100% - 32px); }.section-heading,.security-heading { grid-template-columns: 1fr; gap: 18px; margin-bottom: 44px; }.section-heading h2,.security-heading h2,.product-heading h2 { font-size: 34px; }
  .scenario-list,.security-list { grid-template-columns: 1fr; gap: 12px; }.scenario,.scenario:nth-child(n),.security-list article,.security-list article:nth-child(n) { min-height: auto; padding: 30px 24px 32px; border:1px solid var(--line); }.scenario svg,.security-list svg { margin-bottom: 28px; }
  .capability-rail { grid-template-columns: 1fr; gap: 12px; }.capability:nth-child(n) { min-height: auto; padding: 30px 24px; border:1px solid var(--line); }.capability p { max-width: 480px; }
.workflow-heading { text-align:left; }.workflow-steps { margin-left:4px; }
  .product { padding-top: 84px; }.product-frame { min-height: 590px; overflow: visible; border-radius: 10px; }.app-topbar { height: auto; grid-template-columns: 1fr; }.app-brand { height: 48px; }.app-tabs { height: 48px; order:2; }.app-actions { display:none; }.app-body { display:block; min-height: 490px; }.app-sidebar { display:none; }.app-view { min-height: 490px; }
  #view-data { grid-template-columns: 1fr; }.data-filter { display:none; }.data-toolbar { height: 88px; padding: 12px 14px; grid-template-columns: auto 1fr; }.data-toolbar label { height:30px; }.data-table { padding: 0 10px 12px; }.table-row { grid-template-columns: minmax(160px,2fr) 55px 1fr; min-height:52px; }.table-row > span:nth-child(3) { font-size: 10px; }
  #view-review { grid-template-columns: 1fr; }.review-insights { display:none; }.document-page { width:90%; min-height:410px; margin:22px auto; padding:32px 24px; }.document-toolbar { height:62px; padding:0 14px; }
  .graph-toolbar { height:64px; padding:0 14px; }.graph-canvas { height:425px; }.graph-canvas > svg { width:720px; height:410px; transform:translateX(-116px); }.graph-legend { gap:10px; white-space:nowrap; }
  .view-summary { display:block; margin-top:24px; }.view-summary > div { min-width:0; }.view-summary h3,.view-summary p { max-width:100%; white-space:normal; overflow-wrap:anywhere; }.view-dots { display:none; }
.brand-story { height:680px; min-height:680px; }.brand-story > img { object-position: 63% center; }.brand-story::after { background: linear-gradient(0deg,rgba(2,14,36,.76),rgba(2,20,48,.34) 48%,rgba(2,20,48,.04) 78%); }.brand-story-shell { width:calc(100% - 32px); padding-bottom:20px; }.brand-story-copy { max-width:100%; padding:18px 18px 14px; background:rgba(2,20,48,.46); backdrop-filter:blur(6px); }.brand-story h2 { font-size:36px; }.brand-story h3 { font-size:17px; }.brand-story p { font-size:12.5px; line-height:1.55; }
  .download { min-height:500px; }.download-shell { width:calc(100% - 32px); }.download-app-preview img { width:64px; height:64px; }.download h2 { font-size:34px; }.download-actions { flex-direction:column; gap:18px; }.download-actions .button { width:100%; }.release-meta { align-items:stretch; flex-direction:column; }.release-meta span { border-radius:10px; }
  .footer-shell { width:calc(100% - 32px); padding-top:60px; gap:48px; }.footer-links { grid-template-columns:repeat(2,1fr); }.footer-bottom { width:calc(100% - 32px); flex-direction:column; gap:8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior:auto; }
  *,*::before,*::after { animation-duration:.01ms!important; animation-iteration-count:1!important; transition-duration:.01ms!important; }
  .reveal { opacity:1; transform:none; }
}

/* ── Inter 自托管(西文子集,变量字体,大陆可用):让 --font 里的 Inter 真正生效 ── */
@font-face { font-family: "Inter"; font-style: normal; font-weight: 100 900; font-display: swap;
  src: url("fonts/inter-latin-wght-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
/* ── 中文标题:字距归零、行高放宽(英文模式保持原设计值) ── */
html:not([lang="en"]) .hero h1 { letter-spacing: 0; line-height: 1.18; }
html:not([lang="en"]) .section-heading h2, html:not([lang="en"]) .security-heading h2,
html:not([lang="en"]) .workflow-heading h2, html:not([lang="en"]) .download h2 { letter-spacing: 0; line-height: 1.25; }
html:not([lang="en"]) .brand-story h2 { letter-spacing: 0; line-height: 1.15; }
/* ── 定位行 ── */
.hero-positioning { font-size: 15px; }
/* 桌面端中文 H1:上限微收,保证"信息亦无处不在"8字两行内落地 */
@media (min-width: 901px) { html:not([lang="en"]) .hero h1 { font-size: clamp(44px, 4.6vw, 66px); } }
/* 桌面端英文 H1:三行定稿(断点由 <br> 控制),字号微收、容器放宽,避免浏览器随机换行 */
@media (min-width: 901px) { html[lang="en"] .hero h1 { font-size: clamp(40px, 4.2vw, 56px); max-width: 700px; } }
/* 修复:<picture> 包裹后 .brand-story > img 直接子选择器失效,补齐同样的铺满定位(保留 WebP + PNG 回退) */
.brand-story > picture { display: contents; }
.brand-story > picture > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 900px) { .brand-story > picture > img { object-position: 61% center; } }
@media (max-width: 640px) { .brand-story > picture > img { object-position: 63% center; } }
/* ── 工作流五步:节点由描边空心圆改为实心渐变+光晕,连线改为渐变轨道,滚动到位时 1→5 依次点亮 ── */
.workflow-steps::before { height: 2px; top: 28px; background: linear-gradient(90deg, rgba(26,112,195,0) 0%, rgba(26,112,195,.35) 8%, rgba(26,112,195,.35) 92%, rgba(26,112,195,0) 100%); }
.workflow-steps li > span {
  border: 0; font-size: 18px; font-weight: 700; color: var(--blue);
  background: #EEF5FF; box-shadow: 0 0 0 6px rgba(26,112,195,.06);
  transition: background .45s ease, color .45s ease, box-shadow .45s ease, transform .45s ease;
}
.workflow-steps li.in > span {
  color: #fff; background: linear-gradient(135deg, #2B7FD6 0%, #1A70C3 55%, #0E5AA8 100%);
  box-shadow: 0 0 0 7px rgba(26,112,195,.10), 0 10px 24px rgba(26,112,195,.30);
  transform: translateY(-2px);
}
.workflow-steps li:nth-child(1).in > span { transition-delay: .05s }
.workflow-steps li:nth-child(2).in > span { transition-delay: .20s }
.workflow-steps li:nth-child(3).in > span { transition-delay: .35s }
.workflow-steps li:nth-child(4).in > span { transition-delay: .50s }
.workflow-steps li:nth-child(5).in > span { transition-delay: .65s }
.workflow-steps h3 { font-weight: 700; }
@media (max-width: 640px) { .workflow-steps::before { width: 2px; height: auto; top: 0; left: 28px; background: linear-gradient(180deg, rgba(26,112,195,.35), rgba(26,112,195,.08)); } }
@media (prefers-reduced-motion: reduce) { .workflow-steps li > span { transition: none; } }
/* ── 反馈表单(下载页底部,Netlify Forms) ── */
.feedback { background: linear-gradient(180deg,#f6faff,#fff); }
.feedback-shell { max-width: 640px; margin: 0 auto; padding: 0 24px; }
.feedback .eyebrow-line { margin: 0 0 12px; font-size: 12.5px; font-weight: 700; letter-spacing: .18em; color: var(--blue); }
.feedback h2 { margin: 0 0 14px; font-size: clamp(26px,2.6vw,36px); letter-spacing: 0; line-height: 1.25; }
.feedback-lede { margin: 0 0 30px; color: var(--muted); font-size: 15.5px; line-height: 1.75; }
.feedback-form label { display: block; margin-bottom: 18px; }
.feedback-form label > span { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 600; }
.feedback-form textarea, .feedback-form input[type="email"] { width: 100%; padding: 12px 14px; font: inherit; font-size: 15px; color: var(--ink); background: #fff; border: 1px solid #cfdcec; border-radius: 10px; transition: border-color .2s, box-shadow .2s; }
.feedback-form textarea { resize: vertical; min-height: 140px; }
.feedback-form textarea:focus, .feedback-form input:focus { outline: 0; border-color: var(--blue); box-shadow: 0 0 0 4px rgba(26,112,195,.12); }
.feedback-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.feedback-status { font-size: 14px; color: var(--muted); }
.feedback-status.ok { color: #1e7a34; } .feedback-status.err { color: #b03a2e; }
.hidden-field { position: absolute; left: -9999px; }