:root {
  --bg: #0c0e0f; --panel: #131617; --panel-2: #181b1c; --text: #f4f3ef;
  --muted: #a2a6a3; --line: #323637; --orange: #ff6434; --green: #54d6a0;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text); background: var(--bg);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--bg); }
a { color: inherit; }
img { display: block; max-width: 100%; }

.topbar { position: sticky; top: 0; z-index: 30; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; min-height: 72px; padding: 0 3.2vw; border-bottom: 1px solid var(--line); background: rgba(12,14,15,.92); backdrop-filter: blur(16px); }
.brand { display: flex; align-items: center; gap: 12px; justify-self: start; font-weight: 760; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; color: var(--bg); background: var(--orange); font: 800 12px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.brand-role { margin: 0; color: #6f7472; font: 700 11px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .13em; }
.topbar nav { display: flex; gap: 34px; justify-self: end; }
.topbar nav a { color: #c5c8c5; font-size: 14px; text-decoration: none; }
.topbar nav a:hover, .topbar nav a:focus-visible { color: var(--orange); }
.micro { margin: 0; color: var(--orange); font: 750 11px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .13em; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 19px; border: 1px solid var(--line); font-size: 14px; font-weight: 760; text-decoration: none; transition: .2s ease; }
.button-primary { border-color: var(--orange); color: #111; background: var(--orange); }
.button-primary:hover { border-color: #ff825c; background: #ff825c; }
.button-quiet:hover { border-color: #747a78; background: #1b1e1f; }

.portfolio-hero { display: grid; grid-template-columns: minmax(430px,.78fr) minmax(0,1.22fr); min-height: calc(100vh - 72px); border-bottom: 1px solid var(--line); }
.intro-panel { display: flex; flex-direction: column; min-width: 0; padding: 42px 3.2vw 34px; border-right: 1px solid var(--line); }
.intro-main { margin: auto 0; }
.availability { margin: 0 0 32px; color: var(--muted); font: 700 11px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .12em; }
.availability span { display: inline-block; width: 7px; height: 7px; margin-right: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(84,214,160,.08); }
.intro-main h1 { margin: 0; font-size: clamp(70px,7.2vw,124px); line-height: .9; letter-spacing: -.07em; }
.intro-main h2 { margin: 30px 0 24px; font-size: clamp(26px,2.3vw,40px); line-height: 1.2; letter-spacing: -.035em; }
.intro-copy { max-width: 570px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.75; }
.intro-actions { display: flex; gap: 10px; margin-top: 38px; }
.focus-list { display: grid; grid-template-columns: repeat(3,1fr); margin: 44px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line); list-style: none; }
.focus-list li { color: #c8cbc8; font-size: 13px; line-height: 1.5; }
.focus-list span { display: block; margin-bottom: 8px; color: #686d6b; font: 700 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }

.featured-panel { position: relative; min-height: 680px; overflow: hidden; background: #191c1d; text-decoration: none; }
.featured-panel > img { width: 100%; height: 100%; object-fit: cover; object-position: center; filter: saturate(.78) contrast(1.05); transition: transform .65s ease, filter .65s ease; }
.featured-panel:hover > img { transform: scale(1.018); filter: saturate(1) contrast(1.06); }
.image-shade { position: absolute; inset: 0; background: linear-gradient(180deg,rgba(8,10,10,.46),rgba(8,10,10,.04) 42%,rgba(8,10,10,.88)); }
.featured-top, .featured-bottom { position: absolute; right: 0; left: 0; display: flex; justify-content: space-between; gap: 30px; padding: 30px 34px; }
.featured-top { top: 0; color: #d5d7d4; font: 700 11px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .1em; }
.status { display: flex; align-items: center; gap: 9px; }
.status i { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(84,214,160,.1); }
.featured-bottom { bottom: 0; align-items: end; }
.featured-bottom p { margin: 0 0 12px; color: var(--orange); font: 700 11px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .12em; }
.featured-bottom h2 { margin: 0 0 11px; font-size: clamp(62px,7vw,112px); line-height: .9; letter-spacing: -.065em; }
.featured-bottom div > span { color: #c6c9c6; font-size: 15px; }
.project-arrow { display: grid; place-items: center; width: 62px; height: 62px; border: 1px solid rgba(255,255,255,.38); border-radius: 50%; font-size: 28px; }

.proof { display: grid; grid-template-columns: 1.05fr .95fr; gap: 9vw; padding: 120px 3.2vw; border-bottom: 1px solid var(--line); }
.proof-title h2 { max-width: 760px; margin: 22px 0 0; font-size: clamp(44px,5.2vw,84px); line-height: 1.04; letter-spacing: -.055em; }
.proof-body { align-self: end; }
.proof-body > p { max-width: 680px; margin: 0 0 52px; color: var(--muted); font-size: 18px; line-height: 1.8; }
.proof-body dl { display: grid; grid-template-columns: repeat(3,1fr); margin: 0; border-top: 1px solid var(--line); }
.proof-body dl div { padding: 22px 18px 0 0; }
.proof-body dt { margin-bottom: 8px; font-size: 34px; font-weight: 800; }
.proof-body dd { margin: 0; color: #7e8380; font-size: 13px; }
.signal-line { display: flex; align-items: center; gap: 18px; padding: 28px 3.2vw; overflow: hidden; border-bottom: 1px solid var(--line); color: #8b908d; font: 700 11px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .09em; white-space: nowrap; }
.signal-line i { flex: 1 1 40px; min-width: 20px; height: 1px; background: #3b4040; }
.contact-strip { display: grid; grid-template-columns: 1fr 2fr 1fr; align-items: end; gap: 30px; padding: 80px 3.2vw 90px; }
.contact-strip p, .contact-strip > span { margin: 0; color: #777c79; font-size: 13px; }
.contact-strip > span { text-align: right; }
.contact-strip a { font-size: clamp(25px,3.2vw,50px); font-weight: 800; letter-spacing: -.045em; text-underline-offset: 8px; }

/* Project page */
.case-hero { padding: 82px 3.2vw 0; }
.case-intro { display: grid; grid-template-columns: 150px 1fr; gap: 44px; align-items: end; margin-bottom: 52px; }
.case-index { display: flex; flex-direction: column; }
.case-index span { color: #6f7472; font: 700 11px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .12em; }
.case-index strong { color: var(--orange); font-size: 72px; line-height: 1; }
.case-copy { display: grid; grid-template-columns: 1.35fr .65fr; gap: 40px; align-items: end; min-width: 0; }
.case-copy h1 { grid-column: 1/-1; margin: 18px 0 10px; font-size: clamp(82px,12vw,180px); line-height: .78; letter-spacing: -.075em; }
.case-copy > p:not(.micro) { max-width: 680px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.75; }
.case-actions { display: flex; justify-content: flex-end; gap: 10px; }
.case-cover { margin: 0; border: 1px solid var(--line); background: #111; }
.case-cover img { width: 100%; max-height: 760px; object-fit: cover; object-position: center; }
.case-cover figcaption { display: flex; justify-content: space-between; padding: 14px 16px; color: #7d827f; font: 700 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .1em; }
.case-meta { display: grid; grid-template-columns: repeat(4,1fr); margin: 0; border-bottom: 1px solid var(--line); }
.case-meta div { padding: 25px 20px; border-right: 1px solid var(--line); }
.case-meta div:last-child { border-right: 0; }
.case-meta dt { margin-bottom: 9px; color: #757a77; font-size: 12px; }
.case-meta dd { margin: 0; font-size: 14px; font-weight: 740; }
.case-problem { display: grid; grid-template-columns: .45fr 1.6fr .75fr; gap: 50px; align-items: start; padding: 130px 3.2vw; }
.case-problem h2 { margin: 0; font-size: clamp(42px,5.7vw,88px); line-height: 1.05; letter-spacing: -.055em; }
.case-problem > p:last-child { align-self: end; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.case-flow { display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.case-flow article { min-height: 220px; padding: 28px 3.2vw; border-right: 1px solid var(--line); }
.case-flow article:last-child { border-right: 0; }
.case-flow span, .core-list span { color: var(--orange); font: 700 11px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.case-flow h3 { margin: 72px 0 9px; font-size: 22px; }
.case-flow p { margin: 0; color: #808582; font-size: 13px; }
.core { display: grid; grid-template-columns: .65fr 1.35fr; gap: 7vw; padding: 130px 3.2vw; }
.core header h2 { margin: 20px 0 0; font-size: clamp(48px,6vw,92px); letter-spacing: -.06em; }
.core-list { border-top: 1px solid #606563; }
.core-list article { display: grid; grid-template-columns: 52px .8fr 1.3fr; gap: 20px; align-items: baseline; padding: 28px 0; border-bottom: 1px solid var(--line); }
.core-list h3 { margin: 0; font-size: 20px; }
.core-list p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.7; }
.demo-section { padding: 120px 3.2vw; border-top: 1px solid var(--line); background: #090b0c; }
.demo-heading { display: grid; grid-template-columns: 1fr minmax(320px,.72fr); gap: 7vw; align-items: end; margin-bottom: 42px; }
.demo-heading h2 { margin: 18px 0 0; font-size: clamp(48px,6vw,90px); line-height: .98; letter-spacing: -.06em; }
.demo-heading > p { max-width: 620px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.demo-player { margin: 0; border: 1px solid var(--line); background: #000; }
.demo-player video { display: block; width: 100%; aspect-ratio: 16/9; background: #000; object-fit: contain; }
.demo-player figcaption { display: flex; justify-content: space-between; gap: 20px; padding: 14px 16px; border-top: 1px solid var(--line); color: #7d827f; font: 700 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .1em; }
.case-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.case-gallery figure { margin: 0; background: var(--panel); }
.case-gallery img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.case-gallery figcaption { display: grid; grid-template-columns: .7fr 1.3fr; gap: 30px; padding: 26px 3.2vw 34px; }
.case-gallery figcaption span { color: var(--muted); font-size: 14px; line-height: 1.6; }
.lab-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 7vw; align-items: center; padding: 120px 3.2vw; background: var(--panel-2); }
.lab-section h2 { margin: 18px 0 20px; font-size: clamp(48px,6vw,90px); line-height: .98; letter-spacing: -.06em; }
.lab-section p:not(.micro) { max-width: 590px; margin: 0 0 34px; color: var(--muted); font-size: 16px; line-height: 1.8; }
.lab-section img { box-shadow: 0 30px 90px rgba(0,0,0,.38); }
.case-footer { display: flex; justify-content: space-between; gap: 30px; padding: 64px 3.2vw 80px; border-top: 1px solid var(--line); }
.case-footer a { font-size: clamp(18px,2.2vw,32px); font-weight: 760; text-underline-offset: 7px; }

@media (max-width:1050px) {
  .portfolio-hero { grid-template-columns: 1fr; }
  .intro-panel { min-height: 720px; border-right: 0; border-bottom: 1px solid var(--line); }
  .featured-panel { min-height: 720px; }
  .case-copy { grid-template-columns: 1fr; }
  .case-copy h1 { grid-column: 1; }
  .case-actions { justify-content: flex-start; }
  .case-problem { grid-template-columns: .4fr 1.6fr; }
  .case-problem > p:last-child { grid-column: 2; }
}
@media (max-width:760px) {
  .topbar { grid-template-columns: 1fr auto; padding: 0 20px; }
  .brand-role { display: none; }
  .topbar nav { gap: 18px; }
  .topbar nav a:nth-child(2) { display: none; }
  .portfolio-hero { min-height: auto; }
  .intro-panel { min-height: 680px; padding: 34px 20px 28px; }
  .intro-main h1 { font-size: 72px; }
  .intro-main h2 { font-size: 28px; }
  .intro-copy { font-size: 16px; }
  .focus-list { gap: 13px; }
  .featured-panel { min-height: 560px; }
  .featured-top, .featured-bottom { padding: 22px 20px; }
  .featured-bottom h2 { font-size: 62px; }
  .featured-bottom div > span { display: block; max-width: 260px; line-height: 1.5; }
  .project-arrow { width: 50px; height: 50px; }
  .proof { grid-template-columns: 1fr; padding: 90px 20px; }
  .proof-title h2 { font-size: 45px; }
  .proof-body > p { font-size: 16px; }
  .signal-line { padding-right: 20px; padding-left: 20px; }
  .contact-strip { grid-template-columns: 1fr; padding: 65px 20px; }
  .contact-strip > span { text-align: left; }
  .contact-strip a { overflow-wrap: anywhere; }
  .case-hero { padding: 60px 20px 0; }
  .case-intro { grid-template-columns: 1fr; gap: 28px; }
  .case-index { display: none; }
  .case-copy { gap: 24px; }
  .case-copy h1 { font-size: 67px; }
  .case-actions { flex-wrap: wrap; }
  .case-cover figcaption span:last-child { display: none; }
  .case-meta { grid-template-columns: 1fr 1fr; }
  .case-meta div:nth-child(2) { border-right: 0; }
  .case-meta div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .case-problem { grid-template-columns: 1fr; padding: 90px 20px; }
  .case-problem h2 { font-size: 44px; }
  .case-problem > p:last-child { grid-column: 1; }
  .case-flow { grid-template-columns: 1fr 1fr; }
  .case-flow article:nth-child(2) { border-right: 0; }
  .case-flow article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .case-flow article { min-height: 180px; padding: 24px 20px; }
  .case-flow h3 { margin-top: 50px; }
  .core { grid-template-columns: 1fr; padding: 90px 20px; }
  .core header h2 { font-size: 54px; }
  .core-list article { grid-template-columns: 38px 1fr; }
  .core-list p { grid-column: 2; }
  .demo-section { padding: 90px 20px; }
  .demo-heading { grid-template-columns: 1fr; gap: 24px; }
  .demo-heading h2 { font-size: 52px; }
  .case-gallery { grid-template-columns: 1fr; }
  .case-gallery figcaption { grid-template-columns: 1fr; padding: 24px 20px 30px; }
  .lab-section { grid-template-columns: 1fr; padding: 90px 20px; }
  .lab-section h2 { font-size: 52px; }
  .case-footer { flex-direction: column; padding: 55px 20px; }
}
@media (max-width:460px) {
  .topbar nav a:first-child { display: none; }
  .intro-main h1 { font-size: 64px; }
  .intro-main h2 { font-size: 25px; }
  .focus-list { grid-template-columns: 1fr; gap: 15px; }
  .focus-list span { display: inline; margin-right: 8px; }
  .featured-panel { min-height: 500px; }
  .featured-bottom h2 { font-size: 52px; }
  .project-arrow { display: none; }
  .proof-title h2, .case-problem h2 { font-size: 38px; }
  .proof-body dl { gap: 10px; }
  .proof-body dt { font-size: 27px; }
  .case-copy h1 { font-size: 56px; }
  .case-actions .button { width: 100%; }
  .demo-player figcaption span:last-child { display: none; }
  .case-meta { grid-template-columns: 1fr; }
  .case-meta div { border-right: 0; border-bottom: 1px solid var(--line); }
  .case-flow { grid-template-columns: 1fr; }
  .case-flow article { border-right: 0; border-bottom: 1px solid var(--line); }
}
@media (prefers-reduced-motion:reduce) { html { scroll-behavior: auto; } .featured-panel > img, .button { transition: none; } }