:root {
  --red: #e6302f;
  --red-dark: #c92020;
  --ink: #17191d;
  --muted: #737983;
  --line: #e8e9ec;
  --surface: #f5f6f8;
  --green: #15915f;
  --white: #fff;
  --radius: 18px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--white);
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

.aidesign-banner { padding: 0 max(24px, calc((100vw - 1180px) / 2)); color: white; background: #111216; }
.aidesign-banner-inner { min-height: 114px; display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 20px 0; }
.aidesign-banner p { display: flex; flex-direction: column; gap: 6px; margin: 0; }
.aidesign-banner p span { color: #ff8a88; font-size: 11px; font-weight: 800; letter-spacing: .18em; }
.aidesign-banner strong { font-size: clamp(34px, 4.2vw, 58px); line-height: 1; letter-spacing: -.05em; }
.aidesign-cta { flex: 0 0 auto; display: inline-flex; align-items: center; gap: 18px; min-height: 54px; padding: 0 22px; border-radius: 9px; color: #17191d; background: #fff; font-weight: 800; transition: transform .2s ease, background .2s ease; }
.aidesign-cta span { color: var(--red); font-size: 21px; }
.aidesign-cta:hover { color: white; background: var(--red); transform: translateY(-2px); }
.aidesign-cta:hover span { color: white; }

.topbar {
  height: 72px;
  padding: 0 max(24px, calc((100vw - 1180px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.92);
  border-bottom: 1px solid rgba(232,233,236,.85);
  backdrop-filter: blur(16px);
}
.brand { display: flex; gap: 10px; align-items: center; font-weight: 750; }
.brand-mark { display: grid; place-items: center; width: 30px; height: 30px; color: white; background: var(--red); border-radius: 8px; }
.data-date { color: var(--muted); font-size: 13px; }
.step-nav { display: flex; gap: 30px; font-size: 14px; color: var(--muted); }
.step-nav a { position: relative; padding: 25px 0; }
.step-nav a.active { color: var(--ink); font-weight: 650; }
.step-nav a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: var(--red); border-radius: 3px 3px 0 0; }

.section { max-width: 1180px; margin: 0 auto; padding: 110px 24px; }
.hero { min-height: calc(100vh - 72px); display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; gap: 60px; padding-top: 60px; padding-bottom: 70px; }
.eyebrow { display: inline-flex; color: var(--red); background: #fff0f0; border-radius: 999px; padding: 8px 13px; font-size: 13px; font-weight: 700; }
h1 { margin: 22px 0; font-size: clamp(48px, 5.6vw, 76px); line-height: 1.08; letter-spacing: -.06em; }
.hero-lead { max-width: 610px; color: var(--muted); font-size: 18px; line-height: 1.8; }
.hero-actions { display: flex; gap: 12px; margin-top: 34px; }
.button { min-height: 48px; padding: 0 23px; border-radius: 10px; display: inline-flex; justify-content: center; align-items: center; border: 1px solid transparent; cursor: pointer; font-weight: 700; transition: .2s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(20,24,32,.12); }
.primary { color: white; background: var(--red); }
.primary:hover { background: var(--red-dark); }
.secondary { color: var(--ink); background: white; border-color: #dfe1e5; }
.mini-facts { margin-top: 52px; display: flex; flex-wrap: wrap; gap: 28px; color: var(--muted); font-size: 12px; }
.mini-facts span { display: grid; gap: 5px; }
.mini-facts b { color: var(--ink); font-size: 16px; }

.robot-stage { position: relative; min-height: 520px; display: grid; place-items: center; overflow: hidden; border-radius: 32px; background: linear-gradient(145deg, #f4f5f7, #e9eaed); }
.robot-stage img { width: 116%; max-width: none; position: relative; z-index: 2; mix-blend-mode: multiply; filter: contrast(1.04); }
.robot-halo { position: absolute; width: 390px; height: 390px; border-radius: 50%; background: white; box-shadow: 0 0 80px rgba(255,255,255,.9); }
.floating-card { position: absolute; z-index: 3; display: grid; gap: 4px; background: rgba(255,255,255,.9); padding: 14px 18px; border: 1px solid rgba(255,255,255,.8); border-radius: 12px; box-shadow: 0 12px 30px rgba(31,35,42,.1); backdrop-filter: blur(10px); }
.floating-card small { color: var(--muted); }
.floating-card strong { font-size: 19px; }
.price-card { top: 42px; left: 34px; }
.sign-card { bottom: 38px; right: 30px; }
.sign-card strong { color: var(--red); }

.basics { padding-top: 125px; }
.section-heading { display: flex; align-items: flex-start; gap: 22px; margin-bottom: 42px; }
.section-no { color: var(--red); font-size: 13px; font-weight: 800; padding-top: 8px; }
.section-heading h2 { margin: 0 0 10px; font-size: clamp(32px, 4vw, 48px); letter-spacing: -.04em; }
.section-heading p { margin: 0; color: var(--muted); font-size: 16px; }
.explain-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.explain-card { min-height: 300px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); display: flex; flex-direction: column; }
.explain-card.featured { color: white; background: var(--red); border-color: var(--red); transform: translateY(-12px); box-shadow: 0 20px 50px rgba(230,48,47,.18); }
.card-index { color: var(--muted); font-weight: 800; }
.featured .card-index, .featured p { color: rgba(255,255,255,.75); }
.explain-card h3 { margin: 42px 0 12px; font-size: 23px; }
.explain-card p { color: var(--muted); line-height: 1.75; margin: 0; }
.explain-card strong { margin-top: auto; font-size: 23px; }
.text-link { display: block; width: max-content; margin: 38px auto 0; color: var(--red); font-weight: 700; }

.valuation { max-width: none; padding-left: max(24px, calc((100vw - 1132px) / 2)); padding-right: max(24px, calc((100vw - 1132px) / 2)); background: #17191d; color: white; }
.section-heading.light p { color: #9298a1; }
.valuation-panel { display: grid; grid-template-columns: 1.2fr .8fr; gap: 76px; padding-top: 30px; }
.range-copy > span { color: #a9adb4; }
.range-copy > div { display: flex; align-items: baseline; gap: 10px; margin: 13px 0 28px; }
.range-copy strong { font-size: clamp(66px, 9vw, 108px); line-height: 1; letter-spacing: -.06em; }
.range-copy em { color: #a9adb4; font-size: 18px; font-style: normal; }
input[type="range"] { width: 100%; accent-color: var(--red); cursor: pointer; }
.range-labels { display: flex !important; justify-content: space-between; color: #777d86; font-size: 12px; margin-top: 9px !important; }
.valuation-output { display: grid; border-top: 1px solid #383b40; }
.valuation-output div { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #383b40; }
.valuation-output span { color: #9298a1; }
.valuation-output strong { font-size: 26px; }
.up { color: #ff5452; }
.down { color: #31b77d; }
.formula { margin: 35px 0 0; color: #6f747c; font-size: 12px; }

.prediction-card { padding: 42px; border: 1px solid var(--line); border-radius: 24px; background: var(--surface); }
.prediction-price { text-align: center; padding: 18px 0 42px; }
.prediction-price label { display: block; color: var(--muted); }
.price-input-wrap { display: flex; justify-content: center; align-items: center; margin: 10px 0 6px; }
.price-input-wrap span { font-size: 35px; font-weight: 700; }
.price-input-wrap input { width: 280px; border: 0; outline: 0; background: transparent; font-size: 72px; font-weight: 800; letter-spacing: -.06em; text-align: center; color: var(--ink); }
.prediction-price p { color: var(--red); font-weight: 650; }
fieldset { padding: 24px 0; border: 0; border-top: 1px solid #dedfe2; }
legend { padding: 0 12px 0 0; font-weight: 700; }
.vote-options, .reason-options { display: grid; gap: 12px; margin-top: 16px; }
.vote-options { grid-template-columns: repeat(3,1fr); }
.reason-options { grid-template-columns: repeat(4,1fr); }
.vote-options input, .reason-options input { position: absolute; opacity: 0; pointer-events: none; }
.vote-options span, .reason-options span { min-height: 54px; display: grid; place-items: center; background: white; border: 1px solid #dfe1e5; border-radius: 10px; cursor: pointer; font-weight: 650; transition: .15s ease; }
.vote-options input:checked + span, .reason-options input:checked + span { color: var(--red); border-color: var(--red); box-shadow: inset 0 0 0 1px var(--red); background: #fff7f7; }
.submit { width: 100%; margin-top: 18px; }

.result { max-width: none; min-height: 680px; display: flex; flex-direction: column; align-items: center; gap: 44px; background: #f5f6f8; }
.result-empty { text-align: center; }
.result-empty > span { color: var(--red); font-weight: 800; }
.result-empty h2 { max-width: 620px; margin: 18px auto; font-size: 42px; letter-spacing: -.04em; }
.result-empty p { color: var(--muted); margin-bottom: 28px; }
.result-card { width: min(680px, 100%); padding: 48px; text-align: center; background: white; border-radius: 24px; box-shadow: 0 22px 70px rgba(26,29,34,.1); }
.result-badge { display: inline-block; padding: 7px 11px; color: var(--red); background: #fff0f0; border-radius: 999px; font-size: 12px; font-weight: 750; }
.result-label { color: var(--muted); margin: 28px 0 2px; }
.result-price { font-size: 76px; letter-spacing: -.06em; }
.result-stats { display: grid; grid-template-columns: repeat(3,1fr); margin: 32px 0; border: 1px solid var(--line); border-radius: 14px; }
.result-stats div { display: grid; gap: 8px; padding: 18px 10px; }
.result-stats div + div { border-left: 1px solid var(--line); }
.result-stats span { color: var(--muted); font-size: 12px; }
.result-slogan { font-size: 18px; font-weight: 650; }
.result-actions { display: flex; justify-content: center; gap: 10px; margin-top: 30px; }
.crowd-panel { width: min(1132px, 100%); padding: 38px; border: 1px solid var(--line); border-radius: 24px; background: white; }
.crowd-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.crowd-heading h2 { margin: 6px 0 0; font-size: 34px; letter-spacing: -.04em; }
.crowd-heading > strong { color: var(--muted); font-size: 14px; }
.crowd-heading > strong span { color: var(--red); font-size: 24px; }
.crowd-metrics { display: grid; grid-template-columns: repeat(3, 1fr); margin: 28px 0; border: 1px solid var(--line); border-radius: 14px; }
.crowd-metrics div { display: grid; gap: 8px; padding: 22px; }
.crowd-metrics div + div { border-left: 1px solid var(--line); }
.crowd-metrics span { color: var(--muted); font-size: 12px; }
.crowd-metrics strong { font-size: 23px; }
.crowd-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; }
.distribution-card, .vote-card { padding: 24px; border-radius: 16px; background: var(--surface); }
.distribution-card h3, .vote-card h3, .recent-predictions h3 { margin: 0 0 20px; font-size: 16px; }
.distribution-list, .vote-breakdown { display: grid; gap: 13px; }
.distribution-row { display: grid; grid-template-columns: 82px 1fr 45px; align-items: center; gap: 12px; font-size: 12px; }
.distribution-row > span, .vote-breakdown span { color: var(--muted); }
.distribution-row i, .vote-breakdown i { display: block; height: 8px; overflow: hidden; border-radius: 99px; background: #e1e3e6; }
.distribution-row i b, .vote-breakdown i b { display: block; height: 100%; border-radius: inherit; background: var(--red); transition: width .45s ease; }
.distribution-row strong, .vote-breakdown strong { text-align: right; }
.vote-breakdown div { display: grid; grid-template-columns: 50px 1fr 38px; align-items: center; gap: 10px; font-size: 12px; }
.vote-breakdown div:nth-child(2) i b { background: #90959d; }
.vote-breakdown div:nth-child(3) i b { background: var(--green); }
.recent-predictions { margin-top: 28px; }
.recent-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.recent-item { padding: 14px; border: 1px solid var(--line); border-radius: 12px; display: grid; gap: 6px; }
.recent-item strong { font-size: 19px; }
.recent-item span { color: var(--muted); font-size: 11px; }
.recent-item small { color: #a0a4aa; }
.crowd-empty { margin: 0; color: var(--muted); font-size: 13px; }
.hidden { display: none; }

.explainer-modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 28px; color: white; background: rgba(8,9,12,.88); backdrop-filter: blur(18px); }
.explainer-modal.hidden { display: none; }
.explainer-shell { width: min(1040px, 100%); overflow: hidden; border: 1px solid #35383e; border-radius: 24px; background: #17191d; box-shadow: 0 40px 100px rgba(0,0,0,.5); }
.explainer-topbar { height: 62px; display: flex; align-items: center; justify-content: space-between; padding: 0 22px; border-bottom: 1px solid #303238; font-size: 14px; font-weight: 700; }
.explainer-topbar button { width: 34px; height: 34px; border: 0; border-radius: 50%; color: #aeb2b9; background: #292c31; cursor: pointer; font-size: 24px; line-height: 1; }
.explainer-screen { position: relative; height: min(570px, calc(100vh - 190px)); min-height: 430px; overflow: hidden; background: radial-gradient(circle at 50% 45%, #2c3037 0, #17191d 62%); }
.explainer-scene { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 44px; text-align: center; opacity: 0; visibility: hidden; transform: translateY(22px) scale(.98); transition: opacity .45s ease, transform .45s ease, visibility .45s; }
.explainer-scene.active { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.scene-kicker { margin-bottom: 14px; color: #ff6563; font-size: 13px; font-weight: 800; letter-spacing: .16em; }
.explainer-scene h2 { max-width: 760px; margin: 0; font-size: clamp(34px, 5vw, 62px); letter-spacing: -.055em; }
.explainer-scene > p { max-width: 660px; margin: 28px 0 0; color: #a9adb5; font-size: 17px; line-height: 1.7; }
.visual-scene { align-items: flex-start; text-align: left; isolation: isolate; }
.visual-scene::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(12,14,18,.97) 0%, rgba(12,14,18,.82) 48%, rgba(12,14,18,.08) 100%); }
.scene-photo { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: cover; }
.scene-copy { width: min(610px, 64%); }
.scene-copy h2 { font-size: clamp(34px, 4.6vw, 58px); }
.scene-copy p { color: #b8bcc3; font-size: 16px; line-height: 1.7; }
.scene-tags, .premium-reasons { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
.scene-tags span, .premium-reasons span { padding: 8px 12px; border: 1px solid #555a63; border-radius: 999px; color: #d8dae0; background: rgba(28,31,36,.72); font-size: 12px; }
.factory-scene::after { background: linear-gradient(90deg, rgba(12,14,18,.96) 0%, rgba(12,14,18,.78) 58%, rgba(12,14,18,.18) 100%); }
.delivery-stats { display: flex; gap: 38px; margin-top: 30px; }
.delivery-stats div { display: grid; gap: 3px; }
.delivery-stats strong { color: #ff5d5b; font-size: 35px; letter-spacing: -.04em; }
.delivery-stats span { color: #91969f; font-size: 12px; }
.premium-reasons { justify-content: center; margin-top: 26px; }
.share-visual { display: flex; align-items: center; gap: 34px; margin-top: 46px; }
.share-visual strong { color: #ff5654; font-size: 62px; letter-spacing: -.05em; }
.share-stack { display: flex; align-items: flex-end; gap: 7px; height: 80px; }
.share-stack i { display: block; width: 22px; height: 54px; border: 2px solid #e5e7eb; border-radius: 5px; background: #30343a; animation: shareRise .55s both; }
.share-stack i:nth-child(2) { height: 62px; animation-delay: .08s; }
.share-stack i:nth-child(3) { height: 70px; animation-delay: .16s; }
.share-stack i:nth-child(4) { height: 62px; animation-delay: .24s; }
.share-stack i:nth-child(5) { height: 54px; animation-delay: .32s; }
.calculation-visual { display: flex; align-items: center; gap: 22px; margin-top: 55px; font-size: clamp(22px, 3vw, 38px); }
.calculation-visual b { color: #696f78; }
.calculation-visual strong { padding: 15px 20px; color: white; background: var(--red); border-radius: 12px; font-size: 1.25em; animation: resultPop .6s .35s both; }
.pe-visual { width: min(680px, 100%); margin-top: 42px; display: grid; gap: 22px; }
.pe-bar { display: grid; grid-template-columns: 52px 1fr 96px; align-items: center; gap: 16px; text-align: left; }
.pe-bar span { color: #a9adb5; }
.pe-bar i { display: block; height: 16px; border-radius: 999px; transform-origin: left; animation: barGrow .85s both; }
.pe-bar strong { text-align: right; }
.pe-bar.industry i { width: 18%; background: #747a84; }
.pe-bar.unitree i { width: 100%; background: var(--red); animation-delay: .18s; }
.pe-bar.unitree strong { color: #ff6563; }
.final-number { margin: 32px 0; color: #ff5c5a; font-size: 42px; font-weight: 800; }
.final-number span { display: inline-grid; place-items: center; width: 105px; height: 105px; border: 2px solid #ff5c5a; border-radius: 20px; font-size: 72px; animation: questionPulse 1.2s infinite; }
.explainer-controls { min-height: 82px; display: grid; grid-template-columns: 42px 1fr 100px; align-items: center; gap: 18px; padding: 0 22px; border-top: 1px solid #303238; }
.explainer-controls > button { width: 38px; height: 38px; border: 0; border-radius: 50%; color: white; background: #2c2f34; cursor: pointer; }
.explainer-timeline { display: grid; gap: 9px; }
.timeline-track { height: 4px; overflow: hidden; border-radius: 99px; background: #3b3e44; }
.timeline-track i { display: block; width: 0; height: 100%; background: var(--red); }
.timeline-labels { display: flex; justify-content: space-between; color: #70757e; font-size: 10px; }
.explainer-time { color: #6f747c; font-size: 12px; text-align: right; }
.explainer-time b { color: #d6d8dc; }
.play-icon { font-size: 10px; }
body.modal-open { overflow: hidden; }

@keyframes shareRise { from { opacity: 0; transform: translateY(22px); } }
@keyframes resultPop { from { opacity: 0; transform: scale(.72); } }
@keyframes barGrow { from { transform: scaleX(0); } }
@keyframes questionPulse { 50% { box-shadow: 0 0 35px rgba(230,48,47,.28); transform: scale(1.04); } }

footer { padding: 28px 24px; text-align: center; color: #999da4; font-size: 12px; border-top: 1px solid var(--line); }
.toast { position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 20px); padding: 12px 18px; border-radius: 9px; color: white; background: #202329; opacity: 0; pointer-events: none; transition: .2s ease; z-index: 30; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 860px) {
  .step-nav { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 75px; }
  .robot-stage { min-height: 430px; }
  .explain-grid { grid-template-columns: 1fr; }
  .explain-card.featured { transform: none; }
  .valuation-panel { grid-template-columns: 1fr; gap: 42px; }
  .valuation-output { min-height: 240px; }
  .reason-options { grid-template-columns: repeat(2,1fr); }
  .crowd-grid { grid-template-columns: 1fr; }
  .recent-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .aidesign-banner { padding: 0 18px; }
  .aidesign-banner-inner { min-height: 154px; align-items: flex-start; flex-direction: column; gap: 18px; padding: 24px 0; }
  .aidesign-banner strong { font-size: 39px; }
  .aidesign-cta { width: 100%; justify-content: space-between; }
  .topbar { height: 60px; }
  .data-date { display: none; }
  .section { padding: 78px 18px; }
  .hero { min-height: auto; padding-top: 52px; }
  h1 { font-size: 48px; }
  .hero-actions { flex-direction: column; }
  .robot-stage { min-height: 340px; border-radius: 22px; }
  .robot-stage img { width: 125%; }
  .mini-facts { gap: 18px; }
  .price-card { top: 20px; left: 18px; }
  .sign-card { bottom: 20px; right: 18px; }
  .prediction-card { padding: 24px 18px; }
  .price-input-wrap input { width: 220px; font-size: 58px; }
  .vote-options { grid-template-columns: 1fr; }
  .result-card { padding: 34px 18px; }
  .result-price { font-size: 60px; }
  .result-stats { grid-template-columns: 1fr; }
  .result-stats div + div { border-left: 0; border-top: 1px solid var(--line); }
  .result-actions { flex-direction: column; }
  .crowd-panel { padding: 24px 16px; }
  .crowd-heading { align-items: flex-start; flex-direction: column; }
  .crowd-metrics { grid-template-columns: 1fr; }
  .crowd-metrics div + div { border-left: 0; border-top: 1px solid var(--line); }
  .recent-list { grid-template-columns: 1fr; }
  .explainer-modal { padding: 0; }
  .explainer-shell { height: 100dvh; min-height: 0; display: grid; grid-template-rows: 62px minmax(0, 1fr) 80px; border: 0; border-radius: 0; }
  .explainer-screen { height: auto; min-height: 0; }
  .explainer-scene { padding: 28px 18px; }
  .visual-scene { justify-content: flex-end; }
  .visual-scene::after, .factory-scene::after { background: linear-gradient(0deg, rgba(12,14,18,.98) 0%, rgba(12,14,18,.82) 62%, rgba(12,14,18,.2) 100%); }
  .scene-photo { object-position: center; }
  .scene-copy { width: 100%; }
  .scene-copy p { font-size: 14px; }
  .delivery-stats { gap: 22px; margin-top: 18px; }
  .delivery-stats strong { font-size: 28px; }
  .explainer-scene h2 { font-size: 38px; }
  .explainer-scene > p { font-size: 15px; }
  .share-visual { gap: 18px; }
  .share-visual strong { font-size: 48px; }
  .share-stack i { width: 15px; }
  .calculation-visual { flex-wrap: wrap; justify-content: center; gap: 12px; }
  .calculation-visual strong { width: 100%; }
  .explainer-controls { grid-template-columns: 38px 1fr 72px; gap: 10px; padding: 0 14px; }
  .timeline-labels { display: none; }
}

@media (max-height: 600px) {
  .explainer-modal { padding: 0; }
  .explainer-shell { height: 100dvh; display: grid; grid-template-rows: 50px minmax(0, 1fr) 62px; border-radius: 0; }
  .explainer-topbar { height: 50px; }
  .explainer-screen { height: auto; min-height: 0; }
  .explainer-scene { justify-content: flex-start; overflow-y: auto; padding: 24px 20px; }
  .explainer-scene h2 { font-size: 34px; }
  .explainer-scene > p { margin-top: 16px; font-size: 14px; }
  .scene-kicker { margin-bottom: 8px; }
  .share-visual, .calculation-visual, .pe-visual { margin-top: 22px; }
  .share-visual strong { font-size: 44px; }
  .final-number { margin: 18px 0; }
  .final-number span { width: 70px; height: 70px; font-size: 48px; }
  .explainer-controls { min-height: 62px; }
}