/* 07 portfolio — 纸白 / 纯黑白 / 巨字 / 跟随预览 */
:root{
  --paper:#f1efe8; --ink:#101010; --ink2:#4a4843; --ink3:#8d8a82;
  --line:rgba(16,16,16,.16); --line2:rgba(16,16,16,.08);
  --accent:#101010;
  --ease:cubic-bezier(.22,.61,.36,1);
  --max:1320px;
}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);
  font:400 15px/1.6 ui-sans-serif,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
h1,h2,h3,p,ul,figure{margin:0}
ul{padding:0;list-style:none}
.wrap{max-width:var(--max);margin:0 auto;padding-inline:clamp(16px,4vw,44px)}
.serif{font-family:ui-serif,Georgia,"Songti SC","Times New Roman",serif}
.mono{font-family:ui-monospace,"SF Mono",Consolas,monospace;font-size:10.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink3)}

/* 头 */
header{position:fixed;top:0;left:0;right:0;z-index:60;mix-blend-mode:difference;color:#fff}
.hd{display:flex;align-items:center;justify-content:space-between;height:56px}
.hd .nm{font-size:13px;font-weight:600;letter-spacing:-.01em}
.hd nav{display:flex;gap:22px}
.hd nav a{font-size:12.5px;opacity:.72;transition:opacity .18s}
.hd nav a:hover,.hd nav a[aria-current]{opacity:1}
.hd .yr{font-family:ui-monospace,monospace;font-size:11px;opacity:.6;letter-spacing:.08em}
@media(max-width:680px){.hd nav{gap:14px}.hd .yr{display:none}}

/* 首屏 */
.hero{min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:clamp(28px,4vw,52px);
  padding-top:100px}
.hero .top{max-width:34ch}
.hero .top p{font-size:clamp(14px,1.3vw,16px);color:var(--ink2);line-height:1.7}
h1.big{font-family:ui-serif,Georgia,"Songti SC",serif;font-weight:400;
  font-size:clamp(3.2rem,12.4vw,11rem);line-height:.86;letter-spacing:-.045em;margin-top:auto;padding-top:clamp(24px,5vw,60px)}
h1.big span{display:block}
h1.big i{font-style:italic;font-size:.42em;letter-spacing:-.02em;color:var(--ink2);display:inline-block;transform:translateY(-.2em)}
.hero-foot{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-top:clamp(24px,4vw,48px);
  padding-top:16px;border-top:1px solid var(--line)}
.hero-foot .r{text-align:right;font-size:12.5px;color:var(--ink2);line-height:1.7}
@media(max-width:700px){.hero-foot{flex-direction:column;align-items:flex-start}.hero-foot .r{text-align:left}}

/* 作品索引 */
.idx{padding-block:clamp(48px,7vw,96px)}
.idx-h{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.idx-h h2{font-family:ui-serif,Georgia,serif;font-weight:400;font-size:clamp(1.3rem,2.4vw,1.8rem);letter-spacing:-.02em}
.list{position:relative}
.row{display:grid;grid-template-columns:52px 1fr auto;gap:clamp(12px,3vw,36px);align-items:baseline;
  padding-block:clamp(16px,2.4vw,26px);border-bottom:1px solid var(--line2);
  transition:padding-left .4s var(--ease),opacity .3s var(--ease)}
.row em{font-family:ui-monospace,monospace;font-size:11px;font-style:normal;color:var(--ink3);letter-spacing:.06em}
.row h3{font-family:ui-serif,Georgia,"Songti SC",serif;font-weight:400;
  font-size:clamp(1.35rem,3.6vw,2.5rem);line-height:1.12;letter-spacing:-.028em;
  transition:font-style .2s,transform .4s var(--ease)}
.row .m{font-size:12px;color:var(--ink3);white-space:nowrap;text-align:right;line-height:1.6}
.row:hover{padding-left:clamp(6px,1.2vw,18px)}
.row:hover h3{font-style:italic}
.list:hover .row:not(:hover){opacity:.42}
@media(max-width:640px){.row{grid-template-columns:34px 1fr}.row .m{display:none}}

/* 跟随预览 */
.peek{position:fixed;z-index:40;width:clamp(220px,24vw,340px);aspect-ratio:4/3;pointer-events:none;
  opacity:0;transform:translate(-50%,-50%) scale(.94);transition:opacity .28s var(--ease),transform .4s var(--ease);
  border:1px solid rgba(16,16,16,.2);overflow:hidden;background:#dcd9d1}
.peek.on{opacity:1;transform:translate(-50%,-50%) scale(1)}
.peek i{position:absolute;inset:0;display:block}
.peek i.p1{background:linear-gradient(140deg,#cfccc3,#a8a59c 60%,#8d8a81)}
.peek i.p2{background:linear-gradient(140deg,#c9c6bd,#9c9990 55%,#7e7b72)}
.peek i.p3{background:linear-gradient(140deg,#d2cfc6,#b3b0a7 58%,#918e85)}
.peek i.p4{background:linear-gradient(140deg,#c4c1b8,#97948b 60%,#77746c)}
.peek i.p5{background:linear-gradient(140deg,#d7d4cb,#b8b5ac 55%,#98958c)}
@media(max-width:900px),(hover:none){.peek{display:none}}

/* 案例页 */
.case{padding-top:clamp(80px,12vh,140px)}
.case-h{display:grid;grid-template-columns:1.3fr .7fr;gap:clamp(20px,4vw,56px);align-items:end;
  padding-bottom:clamp(24px,4vw,40px);border-bottom:1px solid var(--line)}
.case-h h1{font-family:ui-serif,Georgia,"Songti SC",serif;font-weight:400;
  font-size:clamp(2.2rem,6.4vw,5rem);line-height:.98;letter-spacing:-.035em}
.case-h .meta{display:grid;gap:7px;font-size:12.5px;color:var(--ink2)}
.case-h .meta div{display:flex;justify-content:space-between;gap:16px;padding-bottom:6px;border-bottom:1px solid var(--line2)}
.case-h .meta span:first-child{color:var(--ink3)}
@media(max-width:820px){.case-h{grid-template-columns:1fr}}
.statement{padding-block:clamp(32px,5vw,64px);display:grid;grid-template-columns:180px 1fr;gap:clamp(16px,3vw,40px)}
.statement p{font-family:ui-serif,Georgia,"Songti SC",serif;font-size:clamp(1.15rem,2.5vw,1.75rem);
  line-height:1.45;letter-spacing:-.018em;max-width:34ch}
@media(max-width:760px){.statement{grid-template-columns:1fr}}
.plate{aspect-ratio:16/9;background:linear-gradient(150deg,#d6d3ca,#b0ada4 58%,#8b887f);position:relative;
  margin-bottom:10px}
.plate.wide{aspect-ratio:21/9}
.plate.tall{aspect-ratio:4/5}
.plate b{position:absolute;left:14px;bottom:11px;font:500 10px/1 ui-monospace,monospace;letter-spacing:.14em;
  color:rgba(16,16,16,.5);text-transform:uppercase}
.plate-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:clamp(20px,3vw,36px)}
@media(max-width:700px){.plate-row{grid-template-columns:1fr}}
.cap{font-size:12px;color:var(--ink3);margin-bottom:clamp(24px,4vw,48px);padding-left:2px}
.next{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:clamp(32px,5vw,64px);
  border-top:1px solid var(--line);margin-top:clamp(24px,4vw,56px)}
.next .lbl{font-size:12px;color:var(--ink3)}
.next h2{font-family:ui-serif,Georgia,"Songti SC",serif;font-weight:400;font-size:clamp(1.5rem,3.6vw,2.6rem);
  letter-spacing:-.03em}
.next:hover h2{font-style:italic}

/* 关于 */
.about{padding-top:clamp(80px,12vh,140px)}
.about h1{font-family:ui-serif,Georgia,"Songti SC",serif;font-weight:400;
  font-size:clamp(2rem,5.4vw,4.2rem);line-height:1.02;letter-spacing:-.035em;max-width:22ch}
.about .lede{color:var(--ink2);font-size:clamp(14.5px,1.3vw,16.5px);line-height:1.8;max-width:56ch;margin-top:24px}
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,4vw,52px);margin-top:clamp(40px,6vw,80px);
  padding-top:clamp(24px,3vw,36px);border-top:1px solid var(--line)}
.cols h3{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink3);margin-bottom:14px}
.cols p,.cols li{font-size:14px;color:var(--ink2);line-height:1.75}
.cols li{display:flex;justify-content:space-between;gap:10px;padding-block:6px;border-bottom:1px solid var(--line2)}
.cols li span:last-child{color:var(--ink3);font-size:12.5px}
@media(max-width:820px){.cols{grid-template-columns:1fr}}
.contact{margin-top:clamp(48px,7vw,96px);padding-block:clamp(32px,5vw,64px);border-top:1px solid var(--line)}
.contact a.mail{font-family:ui-serif,Georgia,serif;font-size:clamp(1.3rem,3.4vw,2.4rem);letter-spacing:-.02em;
  border-bottom:1px solid var(--line);display:inline-block;padding-bottom:4px;transition:border-color .24s}
.contact a.mail:hover{border-color:var(--ink)}

footer{padding-block:26px;border-top:1px solid var(--line);margin-top:clamp(32px,5vw,64px);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--ink3)}

:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
@media(prefers-reduced-motion:reduce){*{transition-duration:.01ms!important;animation-duration:.01ms!important}}