:root{--ink:#0a0a0a;--mute:#6b6b6b;--line:#e6e6e6;--bg:#fff;--alt:#f4f4f2;--pad:clamp(18px,4vw,64px);--gap:clamp(12px,1.6vw,22px)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Montserrat","Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ol,ul{list-style:none}

.top{position:fixed;inset:0 0 auto 0;z-index:50;display:flex;justify-content:space-between;align-items:center;padding:12px var(--pad);background:rgba(255,255,255,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.mark{display:flex;align-items:center;gap:10px;font-weight:800;font-size:13px;letter-spacing:.04em}
.top nav{display:flex;gap:22px;font:600 12px "JetBrains Mono",monospace}
.top nav a{opacity:.55;transition:.2s}.top nav a:hover{opacity:1}

.slash{display:inline-block;width:12px;height:20px;background:var(--ink);transform:skewX(-18deg)}
.label{display:flex;align-items:center;gap:10px;font-weight:800;font-size:14px;letter-spacing:.02em;margin-bottom:clamp(16px,2.4vw,28px)}
.eq{margin-left:auto;width:26px;height:14px;border-top:5px solid var(--ink);border-bottom:5px solid var(--ink)}

.mega{font-weight:900;line-height:.86;letter-spacing:-.045em;font-size:clamp(64px,13vw,200px);text-transform:uppercase}
.mega.sm{font-size:clamp(52px,9vw,136px)}

section{position:relative;padding:clamp(32px,4vw,56px) var(--pad)}
.hero{padding-top:clamp(84px,9vw,120px);overflow:hidden}
.hero-top{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:clamp(20px,4vw,64px);align-items:end}
.hero-side{display:grid;gap:16px;padding-bottom:6px}
.eyebrow{font-weight:800;font-size:clamp(14px,1.5vw,19px)}
.eyebrow span{font-weight:500;color:var(--mute)}
.lead{font-size:clamp(13px,1.15vw,16px);line-height:1.7}
.lead em{color:var(--mute);font-style:normal}
dl{display:grid;gap:12px;font-size:13px}
dt{font-weight:800}dd{color:var(--mute);font-family:"JetBrains Mono",monospace;font-size:12px;margin-top:2px}

.index{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);margin-top:clamp(24px,3.5vw,48px);border-top:2px solid var(--ink);padding-top:var(--gap)}
.index a{display:grid;gap:4px;padding:12px 0;height:100%;transition:transform .3s}
.index a:hover{transform:translateX(6px)}
.index i{font:600 12px "JetBrains Mono",monospace;font-style:normal;color:var(--mute)}
.index b{font-weight:900;font-size:clamp(16px,1.8vw,24px);letter-spacing:-.02em}
.index span{font-size:13px;color:var(--ink)}
.index em{font:400 11px "JetBrains Mono",monospace;font-style:normal;color:var(--mute)}

.work.alt{background:var(--alt)}
.intro{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(20px,4vw,64px);align-items:end;margin-bottom:clamp(18px,2.4vw,32px)}
.blurb .cn{font-size:clamp(13px,1.1vw,15px);line-height:1.8}
.blurb .en{margin-top:8px;color:var(--mute);font-size:12.5px;line-height:1.6}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tags li{font:600 11px "JetBrains Mono",monospace;border:1.5px solid var(--ink);border-radius:99px;padding:4px 11px}

.grid{display:grid;gap:var(--gap);margin-top:var(--gap);align-items:start}
.g2{grid-template-columns:1fr 1fr}
.work>.shot{margin-top:0}
.work>.shot + .grid{margin-top:var(--gap)}

/* frames: always show the whole screenshot, never crop */
.shot{background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;box-shadow:0 14px 34px -24px rgba(0,0,0,.28);transition:transform .5s cubic-bezier(.2,.7,.2,1),box-shadow .5s}
.shot:hover{transform:translateY(-4px);box-shadow:0 26px 50px -26px rgba(0,0,0,.35)}
.shot img{width:100%;height:auto;object-fit:contain}
figcaption{display:flex;justify-content:space-between;gap:12px;padding:10px 14px;font:600 11px "JetBrains Mono",monospace;border-top:1px solid var(--line);color:var(--mute);background:#fff}
figcaption i{font-style:normal;color:var(--ink)}

.split{display:grid;grid-template-columns:minmax(0,.48fr) minmax(0,1fr);gap:var(--gap);margin-top:var(--gap);align-items:stretch}
.cards{display:grid;gap:var(--gap);grid-template-rows:repeat(3,1fr)}
.cards article{border:1.5px solid var(--ink);border-radius:6px;padding:clamp(16px,2vw,28px);display:grid;grid-template-columns:44px 1fr;column-gap:16px;row-gap:6px;align-content:center;background:#fff}
.cards i{grid-row:1/4;font:900 34px/1 "Montserrat",sans-serif;font-style:normal}
.cards h3{font-weight:800;font-size:clamp(15px,1.4vw,19px)}
.cards p{font-size:13px;line-height:1.75;color:#222}
.cards em{font:400 11.5px "JetBrains Mono",monospace;font-style:normal;color:var(--mute)}

.labs{display:grid;grid-template-columns:1fr 1fr 1fr .56fr;gap:var(--gap);align-items:start}
.labs .shot{margin:0}

.end{background:var(--ink);color:#fff;overflow:hidden;padding-bottom:clamp(28px,4vw,48px)}
.end .slash{background:#fff}
.contact-row{display:flex;flex-wrap:wrap;gap:12px 48px;justify-content:space-between;margin-top:clamp(24px,4vw,48px);font:600 13px "JetBrains Mono",monospace;border-top:1px solid #333;padding-top:16px}
.contact-row a{border-bottom:1px solid #fff}

.sticker{position:absolute;pointer-events:none;animation:bob 6s ease-in-out infinite;z-index:3}
.end .sticker{filter:invert(1) hue-rotate(180deg)}
.s-star{width:clamp(80px,10vw,160px);top:14%;right:5%;--r:12deg}
.s-smile{width:clamp(70px,8vw,130px);top:46%;right:40%;--r:-10deg;animation-delay:-2s}
.s-arrow{width:clamp(80px,9vw,140px);top:8%;right:19%;--r:-4deg;animation-delay:-4s}
.s-tape{width:clamp(100px,12vw,190px);top:1%;right:6%;--r:8deg}
.s-burst{width:clamp(80px,10vw,160px);top:2%;right:6%;--r:-8deg}
.s-heart{width:clamp(70px,8vw,130px);top:3%;right:8%;--r:10deg}
.s-smile2{width:clamp(80px,10vw,170px);top:14%;right:8%;--r:-6deg}
@keyframes bob{0%,100%{transform:rotate(var(--r,0deg)) translateY(0)}50%{transform:rotate(calc(var(--r,0deg) + 3deg)) translateY(-8px)}}

.rv{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
.shot.rv.in:hover{transform:translateY(-4px)}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}.sticker{animation:none}html{scroll-behavior:auto}}

@media (max-width:1000px){
  .labs{grid-template-columns:1fr 1fr}
  .labs .phone{grid-column:span 1;max-width:340px}
  .index{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .hero-top,.intro,.g2,.split,.labs{grid-template-columns:1fr}
  .cards{grid-template-rows:none}
  .top nav a:not(:last-child){display:none}
  .index{grid-template-columns:1fr 1fr}
  .s-smile{display:none}
}

.split.wide{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr)}
.split.wide .shot{align-self:start}
.index b{overflow-wrap:anywhere}
.s-star2{width:clamp(80px,10vw,150px);top:2%;right:6%;--r:10deg}
.s-smile3{width:clamp(70px,8vw,120px);top:3%;right:7%;--r:-8deg}
.s-arrow2{width:clamp(80px,9vw,130px);top:2%;right:9%;--r:-6deg}
@media (max-width:820px){.split.wide{grid-template-columns:1fr}}

/* ---------- v3: information hierarchy ---------- */
.facts{display:flex;gap:clamp(16px,2.4vw,36px);margin-top:4px}
.facts li{display:flex;align-items:center;gap:10px}
.facts b{font-weight:900;font-size:clamp(34px,3.6vw,54px);letter-spacing:-.04em;line-height:1}
.facts span{font:600 10.5px/1.45 "JetBrains Mono",monospace;color:var(--mute)}

.about{border-top:2px solid var(--ink)}
.about-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:clamp(20px,4vw,64px);align-items:end}
.about-text{display:grid;gap:12px}
.about-text .cn{font-size:clamp(13px,1.1vw,15px);line-height:1.85}
.about-text .en{color:var(--mute);font-size:12.5px;line-height:1.65}
.skills{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);margin-top:clamp(20px,3vw,36px)}
.skills article{border:1.5px solid var(--ink);border-radius:6px;padding:16px 18px;display:grid;gap:8px;align-content:start;background:#fff}
.skills i{font:900 26px/1 "Montserrat",sans-serif;font-style:normal}
.skills h3{font-size:15px;font-weight:800;line-height:1.3}
.skills h3 small{display:block;font:500 10.5px "JetBrains Mono",monospace;color:var(--mute);margin-top:2px}
.skills p{font-size:12.5px;line-height:1.7;color:#222}
.skills a{font:600 11px "JetBrains Mono",monospace;display:inline-block;margin-right:12px;border-bottom:1px solid var(--ink);width:max-content}
.skills article{grid-template-rows:auto auto 1fr auto}
.skills article a{display:inline}

.index-sec{padding-top:0;padding-bottom:clamp(24px,3vw,40px)}
.index-sec .label{margin-bottom:12px}
.index-sec .index{margin-top:0;border-top:0;padding-top:0}
.index em{display:block;margin-top:2px}

/* meta strip — role / team / time / stack / status */
.meta{display:grid;grid-template-columns:1.25fr .8fr .8fr 1.2fr 1.15fr;border-top:2px solid var(--ink);border-bottom:1px solid var(--line);margin-bottom:var(--gap);font-size:13px}
.meta>div{padding:14px 16px 14px 0}
.meta>div+div{padding-left:16px;border-left:1px solid var(--line)}
.meta dt{font:700 10.5px "JetBrains Mono",monospace;color:var(--mute);letter-spacing:.02em;margin-bottom:6px}
.meta dd{font-weight:700;line-height:1.55;margin:0;font-family:inherit;font-size:13px;color:var(--ink)}
.meta dd small{display:block;font-weight:500;font-size:11.5px;color:var(--mute);line-height:1.55;margin-top:2px}

/* premise / approach / detail */
.brief{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);margin-bottom:var(--gap)}
.brief article{background:#fff;border:1px solid var(--line);border-radius:6px;padding:clamp(14px,1.6vw,22px)}
.work.alt .brief article,.work.alt .meta{background:transparent}
.work.alt .brief article{background:#fff}
.brief h4{font:800 11.5px "JetBrains Mono",monospace;letter-spacing:.02em;margin-bottom:10px;display:flex;gap:10px;align-items:center}
.brief h4 i{font-style:normal;background:var(--ink);color:#fff;padding:2px 7px;border-radius:3px}
.brief p{font-size:13.5px;line-height:1.85;color:#1d1d1d}

/* captions now carry a one-line reading guide */
figcaption{flex-wrap:wrap;row-gap:4px}
figcaption span{color:var(--ink);font-weight:700}
figcaption small{flex:0 0 100%;font:400 12px/1.6 "Montserrat","PingFang SC",sans-serif;color:var(--mute);letter-spacing:0}

.intro .blurb .cn{font-size:clamp(14px,1.25vw,17px);line-height:1.7}
.intro .blurb .cn b{font-weight:800}
.contact-row a+a{margin-left:0}

@media (max-width:1100px){
  .meta{grid-template-columns:repeat(2,1fr)}
  .meta>div{padding:12px 12px 12px 0;border-bottom:1px solid var(--line)}
  .meta>div+div{border-left:0;padding-left:0}
  .skills{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .about-grid,.brief,.skills,.meta{grid-template-columns:1fr}
  .facts{flex-wrap:wrap}
}
.gf{grid-template-columns:1fr 1fr .56fr}
@media (max-width:1100px){.gf{grid-template-columns:1fr 1fr}.gf .shot:last-child{max-width:340px}}
@media (max-width:820px){.gf{grid-template-columns:1fr}}