:root {
  color-scheme: light;
  --font: "Segoe UI Variable Text", "Segoe UI", "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif;
  --bg: #f7f7f4;
  --surface: #ffffff;
  --surface-soft: #efefeb;
  --surface-raised: #fafaf8;
  --ink: #202321;
  --text: #5d625e;
  --muted: #686e69;
  --line: #dedfd9;
  --line-strong: #c8cbc3;
  --peach: #efa68e;
  --peach-soft: #f9e5dc;
  --peach-ink: #84422e;
  --blue: #8baed6;
  --blue-soft: #e2ebf5;
  --blue-ink: #315c87;
  --green: #9fbea5;
  --green-soft: #e4eee5;
  --green-ink: #396346;
  --yellow: #dec27b;
  --focus: #286aa5;
  --shadow: 0 24px 70px rgba(48, 53, 45, .08);
  --shadow-small: 0 8px 24px rgba(48, 53, 45, .08);
  --wrap: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #181a19;
    --surface: #232624;
    --surface-soft: #2b2e2c;
    --surface-raised: #202321;
    --ink: #eeefeb;
    --text: #b4b9b4;
    --muted: #939a94;
    --line: #393d3a;
    --line-strong: #4a504b;
    --peach: #d8937c;
    --peach-soft: #49332d;
    --peach-ink: #f1b8a4;
    --blue: #799fc8;
    --blue-soft: #293b4b;
    --blue-ink: #b4d1ee;
    --green: #8aac92;
    --green-soft: #2e4033;
    --green-ink: #bad8c0;
    --yellow: #c7aa62;
    --focus: #9ac8f2;
    --shadow: 0 24px 70px rgba(0, 0, 0, .22);
    --shadow-small: 0 8px 24px rgba(0, 0, 0, .2);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; -webkit-text-size-adjust: 100%; }
body { margin: 0; min-width: 320px; background: var(--bg); color: var(--ink); font: 16px/1.75 var(--font); -webkit-font-smoothing: antialiased; overflow-x: clip; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; text-underline-offset: 4px; }
img, svg { display: block; max-width: 100%; }
button svg, a svg { pointer-events: none; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
::selection { background: var(--peach-soft); color: var(--ink); }
[hidden] { display: none !important; }
.wrap { width: min(var(--wrap), calc(100% - 64px)); margin-inline: auto; }
.section { padding: 120px 0; }
.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; z-index: 100; top: 12px; left: 12px; transform: translateY(-180%); padding: 8px 16px; border-radius: 12px; background: var(--ink); color: var(--bg); }
.skip-link:focus { transform: none; }

.site-header { position: absolute; inset: 0 0 auto; z-index: 20; }
.nav-shell { width: min(1320px, calc(100% - 48px)); height: 88px; margin: auto; display: flex; align-items: center; gap: 40px; }
.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; text-decoration: none; font-size: 20px; font-weight: 700; letter-spacing: -.04em; white-space: nowrap; }
.brand-mark { width: 34px; height: 34px; flex: none; }
.brand-cn { margin-left: 3px; color: var(--text); font-size: 14px; font-weight: 500; letter-spacing: .08em; }
.nav-links { display: flex; align-items: center; gap: 30px; margin-left: auto; }
.nav-links a { position: relative; padding: 10px 0; color: var(--text); font-size: 14px; text-decoration: none; }
.nav-links a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 6px; height: 1px; background: var(--ink); transition: right .2s; }
.nav-links a:hover::after { right: 0; }
.nav-status { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 0 16px; border: 1px solid var(--line); border-radius: 99px; color: var(--text); background: var(--surface); font-size: 13px; text-decoration: none; }
.status-dot { display: inline-block; width: 7px; height: 7px; flex: none; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px var(--green-soft); }

.hero { position: relative; padding: 164px 0 96px; overflow: hidden; }
.hero-copy { position: relative; z-index: 2; text-align: center; }
.eyebrow, .mini-label { margin: 0 0 22px; color: var(--muted); font-size: 11px; font-weight: 700; line-height: 1.4; letter-spacing: .16em; text-transform: uppercase; }
.hero .eyebrow { display: inline-flex; align-items: center; gap: 10px; padding: 8px 14px; border: 1px solid var(--line); border-radius: 99px; background: var(--surface); letter-spacing: .04em; font-size: 12px; font-weight: 500; text-transform: none; }
h1, h2, h3, p { overflow-wrap: break-word; }
h1 { margin: 28px 0 24px; font-size: clamp(50px, 7.3vw, 96px); font-weight: 650; line-height: 1.13; letter-spacing: -.065em; }
h1 span { color: var(--text); font-weight: 450; }
.hero-lede { max-width: 640px; margin: 0 auto; color: var(--text); font-size: 18px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 28px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 48px; padding: 0 22px; border: 1px solid transparent; border-radius: 99px; font-size: 14px; font-weight: 600; text-decoration: none; }
.button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.button-primary { background: var(--ink); color: var(--bg); box-shadow: var(--shadow-small); transition: transform .2s; }
.button-primary:hover { transform: translateY(-2px); }
.text-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; color: var(--text); font-size: 14px; text-decoration: none; border-bottom: 1px solid var(--line-strong); }
.text-link:hover { color: var(--ink); border-color: var(--ink); }
.hero-orbit { position: absolute; border: 1px solid var(--line); border-radius: 50%; pointer-events: none; }
.orbit-one { width: 480px; height: 480px; left: -280px; top: 110px; box-shadow: inset 0 0 100px var(--peach-soft); }
.orbit-two { width: 280px; height: 280px; right: -110px; top: 340px; box-shadow: inset 0 0 80px var(--blue-soft); }

.playground-wrap { position: relative; z-index: 2; margin-top: 90px; padding: 36px 44px 24px; border: 1px solid var(--line); border-radius: 36px; background: var(--surface-raised); box-shadow: var(--shadow); }
.playground-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.playground-heading .mini-label { margin-bottom: 8px; }
.playground-heading h2 { margin: 0; font-size: 24px; font-weight: 600; letter-spacing: -.035em; }
.reset-button { min-width: 88px; min-height: 42px; border: 1px solid var(--line); border-radius: 99px; background: var(--surface); color: var(--text); cursor: pointer; }
.reset-button:hover { color: var(--ink); border-color: var(--line-strong); }
.demo-instruction { max-width: 760px; margin: 16px 0 0; color: var(--text); font-size: 13px; line-height: 1.7; }
.demo-stage { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 60px; max-width: 850px; margin: 24px auto 0; }
.orb-zone { min-width: 0; }
.orb-title { display: flex; align-items: baseline; justify-content: center; gap: 12px; margin-bottom: 14px; }
.orb-title > span { display: flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 650; }
.orb-title i { width: 8px; height: 8px; border-radius: 50%; background: var(--orb-color); }
.orb-title small { color: var(--muted); font-size: 12px; }
.mother-orb { position: relative; width: min(100%, 310px); aspect-ratio: 1; margin: auto; border: 1px solid color-mix(in srgb, var(--orb-color) 65%, var(--line)); border-radius: 50%; background: radial-gradient(circle at 35% 25%, var(--surface) 0, transparent 45%), radial-gradient(circle, color-mix(in srgb, var(--orb-color) 8%, transparent), color-mix(in srgb, var(--orb-color) 27%, transparent)); box-shadow: inset 0 1px 0 var(--surface), 0 26px 50px -35px var(--orb-color); transition: box-shadow .2s; }
.mother-orb.drop-target { box-shadow: 0 0 0 8px color-mix(in srgb, var(--orb-color) 20%, transparent), inset 0 1px 0 var(--surface); }
.orb-center { position: absolute; left: 50%; top: 50%; width: 22%; aspect-ratio: 1; border: 1px dashed color-mix(in srgb, var(--orb-color) 55%, transparent); border-radius: 50%; transform: translate(-50%, -50%); }
.orb-empty { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); color: var(--muted); font-size: 12px; white-space: nowrap; pointer-events: none; }
.source-pool-wrap { display: flex; align-items: center; gap: 16px; max-width: 850px; min-height: 76px; margin: 18px auto 0; padding: 10px 14px; border: 1px solid var(--line); border-radius: 24px; background: var(--surface-soft); }
.pool-label { padding: 0 6px; color: var(--muted); font-size: 12px; }
.source-pool { display: flex; flex: 1; min-width: 0; align-items: center; justify-content: center; gap: 8px; }
.source-chip { display: inline-flex; align-items: center; gap: 8px; min-height: 48px; padding: 5px 12px 5px 6px; border: 1px solid var(--line); border-radius: 99px; background: var(--surface); cursor: grab; touch-action: none; transition: border-color .15s, opacity .15s; }
.source-chip:hover, .source-chip[aria-pressed="true"] { border-color: var(--ink); }
.source-chip[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--ink); }
.source-chip small { color: var(--muted); font-size: 10px; }
.source-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--peach-soft); color: var(--peach-ink); font-size: 12px; }
.source-chip:nth-child(2) .source-icon { background: var(--blue-soft); color: var(--blue-ink); }
.source-chip:nth-child(3) .source-icon { background: var(--green-soft); color: var(--green-ink); }
.source-chip:nth-child(4) .source-icon { background: var(--surface-soft); }
.source-actions { display: flex; flex: 1; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; }
.source-actions span { margin-right: 4px; color: var(--text); font-size: 12px; }
.source-actions button { min-height: 40px; padding: 0 13px; border: 1px solid var(--line-strong); border-radius: 99px; background: var(--surface); cursor: pointer; font-size: 12px; }
.source-actions button:hover { background: var(--ink); color: var(--bg); }
.demo-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 16px; color: var(--muted); font-size: 11px; }
.demo-footer p { margin: 0; }
kbd { display: inline-block; min-width: 20px; padding: 0 4px; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); font: 10px/18px var(--font); text-align: center; }
.demo-footer-sep { margin: 0 5px; }
.noscript-note { color: var(--text); font-size: 13px; }

.demo-bubble { --size: 58px; position: absolute; left: 50%; top: 50%; z-index: 4; width: calc(var(--size) * (.85 + var(--vol, 50) * .0018)); height: calc(var(--size) * (.85 + var(--vol, 50) * .0018)); padding: 0; border: 1px solid color-mix(in srgb, var(--orb-color) 65%, var(--line-strong)); border-radius: 50%; background: color-mix(in srgb, var(--surface) 84%, var(--orb-color)); box-shadow: 0 5px 16px color-mix(in srgb, var(--orb-color) 22%, transparent), inset 0 0 0 3px color-mix(in srgb, var(--surface) 45%, transparent); cursor: grab; touch-action: none; transform: translate(-50%, -50%); animation: bubble-breathe 4.5s ease-in-out infinite; }
.demo-bubble:hover { z-index: 6; }
.demo-bubble.dragging { z-index: 30; cursor: grabbing; animation: none; box-shadow: 0 12px 30px color-mix(in srgb, var(--orb-color) 35%, transparent); }
.demo-bubble .bubble-name { display: block; font-size: 12px; font-weight: 650; line-height: 1.2; pointer-events: none; }
.demo-bubble .bubble-volume { display: block; margin-top: 3px; color: var(--text); font-size: 10px; font-variant-numeric: tabular-nums; line-height: 1; pointer-events: none; }
.demo-bubble.clone::after { content: "分"; position: absolute; top: -3px; right: -3px; display: grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; background: var(--ink); color: var(--bg); font-size: 9px; }
@keyframes bubble-breathe { 50% { box-shadow: 0 5px 22px color-mix(in srgb, var(--orb-color) 35%, transparent), inset 0 0 0 4px color-mix(in srgb, var(--surface) 55%, transparent); } }
.drag-ghost { position: fixed; z-index: 100; pointer-events: none; margin: 0; }

.section-intro { max-width: 700px; margin-bottom: 64px; }
.section-intro h2, .sticky-copy h2, .download h2 { margin: 0; font-size: clamp(36px, 4.6vw, 58px); font-weight: 580; line-height: 1.24; letter-spacing: -.05em; }
.section-intro > p:last-child, .sticky-copy > p:last-child { max-width: 580px; margin: 22px 0 0; color: var(--text); font-size: 17px; }
.horizontal-intro { display: grid; grid-template-columns: 1.25fr .75fr; align-items: end; gap: 80px; max-width: none; }
.horizontal-intro > p:last-child { margin: 0 0 5px; font-size: 15px; }
.audience { background: var(--surface); }
.audience-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 80px; }
.audience-item { position: relative; padding-top: 32px; border-top: 1px solid var(--line); }
.item-number { position: absolute; top: 34px; right: 0; color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.audience-icon { width: 80px; height: 80px; margin-bottom: 28px; border-radius: 24px; background: var(--peach-soft); color: var(--peach-ink); }
.audience-item:nth-child(2) .audience-icon { background: var(--blue-soft); color: var(--blue-ink); }
.audience-icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.audience-item h3 { margin: 0 0 14px; font-size: 25px; font-weight: 600; letter-spacing: -.03em; }
.audience-item p { margin: 0; color: var(--text); }
.item-note { display: block; margin-top: 22px; color: var(--muted); font-size: 12px; }

.split-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 110px; align-items: start; }
.sticky-copy { position: sticky; top: 120px; }
.feature-list { border-top: 1px solid var(--line); }
.feature-list article { display: grid; grid-template-columns: 68px 1fr; gap: 24px; padding: 38px 0; border-bottom: 1px solid var(--line); }
.feature-list h3 { margin: 0 0 10px; font-size: 20px; font-weight: 600; line-height: 1.5; }
.feature-list p { margin: 0; color: var(--text); font-size: 15px; }
.feature-glyph { display: grid; place-items: center; width: 64px; height: 64px; border: 1px solid var(--line); border-radius: 50%; font-size: 19px; font-weight: 650; }
.peach-glyph { background: var(--peach-soft); color: var(--peach-ink); }
.blue-glyph { background: var(--blue-soft); color: var(--blue-ink); }
.split-glyph { position: relative; background: var(--green-soft); }
.split-glyph i { position: absolute; width: 26px; height: 26px; border: 1px solid var(--green-ink); border-radius: 50%; }
.split-glyph i:first-child { left: 13px; }
.split-glyph i:last-child { right: 13px; }

.interface { background: var(--surface); }
.product-shot { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: #f4f4f4; box-shadow: var(--shadow); }
.shot-bar { display: flex; align-items: center; gap: 7px; height: 38px; padding: 0 14px; border-bottom: 1px solid #dedede; background: #fafafa; }
.shot-bar > span { width: 8px; height: 8px; border-radius: 50%; background: #d5d5d5; }
.shot-bar small { margin-left: 8px; color: #777; font: 10px/1 var(--font); letter-spacing: .04em; }
.product-shot img { width: 100%; height: auto; }
.figure-note { margin: 16px 0 0; color: var(--muted); font-size: 12px; text-align: center; }

.chain { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.chain-item { min-width: 0; padding: 32px 28px 36px; border-right: 1px solid var(--line); }
.chain-item:first-child { padding-left: 0; }
.chain-item:last-child { padding-right: 0; border: 0; }
.chain-index { color: var(--muted); font-size: 11px; }
.chain-item h3 { margin: 36px 0 10px; font-size: 22px; font-weight: 600; }
.chain-item p { margin: 0; color: var(--text); font-size: 14px; }
.proeq-band { display: grid; grid-template-columns: 1.2fr .8fr; align-items: center; gap: 70px; margin-top: 80px; padding: 54px; border-radius: 32px; background: var(--surface); }
.eq-visual { height: 260px; padding: 12px 0; }
.eq-visual svg { width: 100%; height: 100%; overflow: visible; }
.eq-grid { fill: none; stroke: var(--line); stroke-width: 1; }
.eq-fill { fill: var(--blue-soft); opacity: .7; }
.eq-line { fill: none; stroke: var(--blue-ink); stroke-width: 2; vector-effect: non-scaling-stroke; }
.eq-nodes { fill: var(--surface); stroke: var(--blue-ink); stroke-width: 2; vector-effect: non-scaling-stroke; }
.proeq-band .mini-label { margin-bottom: 12px; color: var(--blue-ink); }
.proeq-band h3 { margin: 0 0 16px; font-size: 28px; font-weight: 600; letter-spacing: -.03em; }
.proeq-band p { color: var(--text); }

.ducking { background: var(--peach-soft); }
.reverse-on-mobile { grid-template-columns: 1.1fr .9fr; }
.compact-intro { margin: 0; }
.duck-visual { position: relative; min-height: 480px; }
.voice-bubble, .program-bubble { position: absolute; z-index: 2; display: grid; place-content: center; width: 164px; height: 164px; border-radius: 50%; text-align: center; font-size: 20px; font-weight: 600; box-shadow: var(--shadow-small); }
.voice-bubble { top: 26px; left: 8%; background: var(--surface); color: var(--peach-ink); border: 1px solid var(--peach); }
.program-bubble { right: 5%; bottom: 24px; background: var(--blue-soft); color: var(--blue-ink); border: 1px solid var(--blue); }
.voice-bubble span, .program-bubble span { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; font-weight: 400; }
.duck-visual > svg { position: absolute; left: 0; top: 160px; width: 100%; height: 220px; fill: none; stroke: var(--peach-ink); stroke-width: 2; }
.duck-wave-ghost { opacity: .2; stroke-dasharray: 4 7; }
.duck-tag { position: absolute; left: 40%; bottom: 30px; color: var(--peach-ink); font-size: 10px; letter-spacing: .18em; }
.vocal-flex-note { margin-top: 34px; padding-top: 24px; border-top: 1px solid color-mix(in srgb, var(--peach-ink) 20%, transparent); }
.vocal-flex-note > span { color: var(--peach-ink); font-weight: 650; }
.vocal-flex-note p { margin: 8px 0 0; color: var(--text); font-size: 14px; }

.capture-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.time-card, .vibe-card { min-width: 0; padding: 44px; border: 1px solid var(--line); border-radius: 30px; }
.time-card { background: var(--surface); }
.giant-number { font-size: clamp(88px, 11vw, 144px); font-weight: 300; line-height: 1; letter-spacing: -.08em; }
.number-unit { margin-left: 12px; color: var(--muted); font-size: 18px; }
.time-card h3 { margin: 36px 0 12px; font-size: 22px; font-weight: 600; }
.time-card p, .vibe-card > p { margin: 0; color: var(--text); font-size: 14px; }
.vibe-card { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.vibe-top { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 650; }
.vibe-top small { margin-left: auto; color: var(--bg); opacity: .65; font-size: 10px; font-weight: 400; }
.sparkle { color: var(--yellow); font-size: 26px; }
.vibe-card .vibe-quote { margin: 42px 0 26px; color: var(--bg); font-size: clamp(20px, 2.4vw, 28px); line-height: 1.75; letter-spacing: -.02em; }
.vibe-card > p:not(.vibe-quote) { color: var(--bg); opacity: .72; }

.stability { background: var(--surface); }
.stability-rows { border-top: 1px solid var(--line); }
.stability-rows article { display: grid; grid-template-columns: 90px .8fr 1.2fr; align-items: baseline; gap: 28px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.row-tag { color: var(--muted); font-size: 11px; letter-spacing: .1em; }
.stability-rows h3 { margin: 0; font-size: 20px; font-weight: 600; }
.stability-rows p { margin: 0; color: var(--text); font-size: 14px; }

.faq-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 100px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; min-height: 70px; padding: 21px 48px 21px 0; cursor: pointer; list-style: none; font-size: 17px; font-weight: 600; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span::before, .faq-list summary span::after { content: ""; position: absolute; right: 6px; top: 34px; width: 14px; height: 1px; background: var(--text); transition: transform .2s; }
.faq-list summary span::after { transform: rotate(90deg); }
.faq-list details[open] summary span::after { transform: rotate(0); }
.faq-list details p { margin: -4px 40px 24px 0; color: var(--text); font-size: 14px; }
.faq-list details p a { display: inline-flex; align-items: center; min-height: 40px; margin-block: -10px; }

.download { position: relative; isolation: isolate; overflow: hidden; text-align: center; background: var(--surface); }
.download-inner { position: relative; }
.download .eyebrow { margin-bottom: 24px; }
.download-inner > p:not(.eyebrow) { max-width: 540px; margin: 24px auto 0; color: var(--text); }
.download-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 34px; }
.button-disabled { border-color: var(--line); background: var(--surface-soft); color: var(--muted); cursor: not-allowed; }
.button-outline { border-color: var(--line-strong); background: var(--surface); }
.button-outline:hover { border-color: var(--ink); }
.download-orb { position: absolute; left: 50%; top: 50%; z-index: -1; width: 660px; height: 460px; transform: translate(-50%, -50%); pointer-events: none; }
.download-orb i { position: absolute; border-radius: 50%; opacity: .28; }
.download-orb i:nth-child(1) { width: 300px; height: 300px; left: 0; top: 50px; background: var(--peach-soft); border: 1px solid var(--peach); }
.download-orb i:nth-child(2) { width: 330px; height: 330px; right: 0; top: 40px; background: var(--blue-soft); border: 1px solid var(--blue); }
.download-orb i:nth-child(3) { width: 160px; height: 160px; left: 250px; top: 140px; background: var(--green-soft); }

.site-footer { padding: 50px 0 30px; border-top: 1px solid var(--line); background: var(--surface); }
.footer-main { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-bottom: 40px; }
.footer-links { display: flex; align-items: center; gap: 36px; color: var(--text); font-size: 13px; }
.footer-links nav { display: flex; gap: 22px; }
.footer-links a { min-height: 40px; display: inline-flex; align-items: center; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }

@media (max-width: 1000px) {
  .section { padding: 90px 0; }
  .split-layout { gap: 60px; }
  .playground-wrap { padding-inline: 28px; }
  .demo-stage { gap: 30px; }
  .source-chip small { display: none; }
  .proeq-band { gap: 40px; padding: 38px; }
  .horizontal-intro { gap: 50px; }
  .faq-layout { gap: 60px; }
}

@media (max-width: 760px) {
  .wrap { width: min(100% - 36px, var(--wrap)); }
  .nav-shell { width: calc(100% - 28px); height: 74px; }
  .nav-links { display: none; }
  .nav-status { margin-left: auto; }
  .hero { padding: 124px 0 70px; }
  h1 { font-size: clamp(45px, 12vw, 70px); }
  .hero-lede { font-size: 16px; }
  .desktop-break { display: none; }
  .playground-wrap { width: calc(100% - 20px); margin-top: 64px; padding: 24px 14px 18px; border-radius: 26px; }
  .playground-heading { padding-inline: 6px; }
  .playground-heading h2 { font-size: 20px; }
  .demo-instruction { padding-inline: 6px; }
  .demo-stage { gap: 8px; margin-top: 22px; }
  .orb-title { flex-direction: column; align-items: center; gap: 0; margin-bottom: 10px; }
  .orb-title > span { font-size: 14px; }
  .mother-orb { width: min(100%, 250px); }
  .demo-bubble { --size: 50px; }
  .demo-bubble .bubble-name { font-size: 11px; }
  .demo-bubble .bubble-volume { font-size: 9px; }
  .source-pool-wrap { flex-wrap: wrap; gap: 8px; padding: 10px; border-radius: 20px; }
  .pool-label { display: none; }
  .source-pool { flex-basis: 100%; gap: 5px; }
  .source-chip { flex-direction: column; justify-content: center; gap: 1px; min-width: 60px; min-height: 60px; padding: 4px 8px; border-radius: 18px; font-size: 11px; }
  .source-icon { width: 26px; height: 26px; font-size: 10px; }
  .source-actions { flex-basis: 100%; }
  .demo-footer { align-items: flex-start; flex-direction: column; gap: 5px; padding-inline: 5px; }
  .demo-footer-sep { display: none; }
  .section { padding: 76px 0; }
  .section-intro { margin-bottom: 42px; }
  .section-intro h2, .sticky-copy h2, .download h2 { font-size: clamp(34px, 9vw, 48px); }
  .section-intro > p:last-child, .sticky-copy > p:last-child { font-size: 15px; }
  .horizontal-intro { grid-template-columns: 1fr; gap: 22px; }
  .audience-grid { grid-template-columns: 1fr; gap: 48px; }
  .split-layout, .reverse-on-mobile { grid-template-columns: 1fr; gap: 46px; }
  .sticky-copy { position: static; }
  .reverse-on-mobile .section-intro { order: -1; }
  .feature-list article { grid-template-columns: 54px 1fr; gap: 18px; padding: 28px 0; }
  .feature-glyph { width: 50px; height: 50px; }
  .split-glyph i { width: 22px; height: 22px; }
  .split-glyph i:first-child { left: 8px; }
  .split-glyph i:last-child { right: 8px; }
  .product-shot { border-radius: 14px; }
  .chain { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chain-item { padding: 26px 20px; }
  .chain-item:nth-child(2) { border-right: 0; }
  .chain-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .chain-item:nth-child(3) { padding-left: 0; }
  .chain-item h3 { margin-top: 22px; }
  .proeq-band { grid-template-columns: 1fr; gap: 26px; margin-top: 50px; padding: 26px; border-radius: 24px; }
  .eq-visual { height: 190px; }
  .duck-visual { min-height: 390px; }
  .voice-bubble, .program-bubble { width: 136px; height: 136px; }
  .duck-visual > svg { top: 120px; height: 200px; }
  .capture-grid { grid-template-columns: 1fr; }
  .time-card, .vibe-card { padding: 30px; }
  .stability-rows article { grid-template-columns: 54px 1fr; gap: 12px 16px; }
  .stability-rows p { grid-column: 2; }
  .faq-layout { grid-template-columns: 1fr; gap: 38px; }
  .footer-main { align-items: flex-start; flex-direction: column; }
  .footer-links { align-items: flex-start; flex-direction: column; gap: 10px; }
  .footer-bottom { flex-direction: column; gap: 4px; }
}

@media (max-width: 390px) {
  .brand { font-size: 18px; }
  .brand-cn { font-size: 12px; }
  .nav-status { padding: 0 12px; }
  .hero-actions { flex-direction: column; gap: 12px; }
  .demo-bubble { --size: 46px; }
  .demo-bubble .bubble-name { font-size: 10px; }
  .orb-title small { font-size: 10px; }
  .source-chip { min-width: 56px; padding-inline: 6px; }
  .source-actions button { padding-inline: 10px; }
  .chain-item { padding-inline: 14px; }
  .download-actions { flex-direction: column; align-items: stretch; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}