/* R06 · 国际事务所 / 骨架反解自 snohetta.com
   基因：近白场 · 细笔画巨字 · 索引式列表（行即项目）· hover 跟随缩略图 · 日历用真表格 */

:root{
  --bg:#fafaf8;
  --ink:#0d0d0c;
  --muted:#75736d;
  --line:#dedcd6;
  --hover:#f1efe9;
  --pad:clamp(20px,4.4vw,68px);
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--ink);
  font-family:"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  font-size:16px;line-height:1.6;font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:var(--ink);color:var(--bg)}
:focus-visible{outline:2px solid var(--ink);outline-offset:4px}

.mono{font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;font-size:11px;letter-spacing:.04em;color:var(--muted)}

/* 顶栏 */
.top{position:sticky;top:0;z-index:40;background:rgba(250,250,248,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top-in{max-width:1680px;margin:0 auto;padding:0 var(--pad);height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-size:15px;letter-spacing:-.01em;font-weight:500}
.brand span{font-size:10.5px;letter-spacing:.16em;color:var(--muted);margin-left:8px;text-transform:uppercase}
.nav{display:flex;gap:clamp(14px,2.2vw,32px);align-items:center}
.nav a{font-size:12.5px;color:var(--muted);transition:color .2s}
.nav a:hover,.nav a[aria-current]{color:var(--ink)}
.nav a[aria-current]{text-decoration:underline;text-underline-offset:5px}

/* 首屏 */
.hero{max-width:1680px;margin:0 auto;padding:clamp(46px,7vw,104px) var(--pad) clamp(30px,4vw,54px)}
.hero-grid{display:grid;grid-template-columns:1.55fr .45fr;gap:clamp(20px,4vw,60px);align-items:end}
h1{
  font-size:clamp(2.2rem,6.4vw,6.2rem);
  line-height:.98;letter-spacing:-.05em;font-weight:400;max-width:20ch;
}
.hero-side p{font-size:14px;color:var(--muted);line-height:1.8;max-width:30ch}
.hero-side .k{display:block;margin-bottom:10px;color:var(--ink);font-size:11px;letter-spacing:.16em;text-transform:uppercase}

/* 索引行 */
.index{max-width:1680px;margin:0 auto;padding:0 var(--pad)}
.idx-head{display:flex;justify-content:space-between;align-items:baseline;gap:18px;padding:18px 0;border-bottom:1px solid var(--ink)}
.idx-head h2{font-size:13px;letter-spacing:.12em;text-transform:uppercase;font-weight:500}
.row{
  display:grid;grid-template-columns:64px 1fr 1.05fr 40px;gap:clamp(12px,2.4vw,36px);
  align-items:center;padding:clamp(18px,2.4vw,28px) 0;border-bottom:1px solid var(--line);
  transition:background .3s ease,padding-left .35s cubic-bezier(.22,1,.36,1);
}
.row:hover{background:var(--hover);padding-left:12px}
.row .n{font-family:ui-monospace,monospace;font-size:11px;color:var(--muted)}
.row h3{font-size:clamp(17px,2.1vw,26px);letter-spacing:-.025em;line-height:1.2;font-weight:400}
.row p{font-size:13.5px;color:var(--muted);line-height:1.55;max-width:40ch}
.row .go{
  width:26px;height:26px;border:1px solid var(--line);border-radius:50%;
  display:flex;align-items:center;justify-content:center;justify-self:end;
  transition:background .3s,border-color .3s,transform .3s;
}
.row:hover .go{background:var(--ink);border-color:var(--ink);transform:rotate(45deg)}
.row .go svg{width:10px;height:10px;stroke:var(--ink);fill:none;transition:stroke .3s}
.row:hover .go svg{stroke:var(--bg)}

/* 跟随缩略图 */
#peek{
  position:fixed;left:0;top:0;width:300px;height:210px;z-index:60;pointer-events:none;
  opacity:0;transform:translate(-50%,-50%) scale(.96);
  transition:opacity .25s ease,transform .35s cubic-bezier(.22,1,.36,1);
  overflow:hidden;
}
#peek.on{opacity:1;transform:translate(-50%,-50%) scale(1)}
#peek .peek-img{position:absolute;inset:0;background:#d9d6cd}
#peek .peek-img::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(90deg,rgba(13,13,12,.08) 0 1px,transparent 1px 34px);
}
#peek .peek-img.p2{background:linear-gradient(150deg,#cfd3cb,#9aa196 62%,#606a5f)}
#peek .peek-img.p3{background:linear-gradient(120deg,#e2d8c8,#b9a58a 58%,#7d6a52)}
#peek .peek-img.p4{background:linear-gradient(200deg,#c9ccd2,#8b9099 60%,#4f545c)}

/* 精选项目 */
.sec{max-width:1680px;margin:0 auto;padding:clamp(48px,7vw,104px) var(--pad)}
.sec-head{display:flex;justify-content:space-between;align-items:baseline;gap:18px;padding-bottom:16px;border-bottom:1px solid var(--ink);margin-bottom:clamp(22px,3vw,38px)}
.sec-head h2{font-size:clamp(1.3rem,2.2vw,1.8rem);letter-spacing:-.03em;font-weight:400}
.sec-head a{font-size:12.5px;color:var(--muted);border-bottom:1px solid var(--line)}
.sec-head a:hover{color:var(--ink);border-color:var(--ink)}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2.4vw,32px)}
.pcard{border-top:1px solid var(--line);padding-top:14px}
.pcard .thumb{position:relative;overflow:hidden;aspect-ratio:4/3;background:#dedbd2;margin-bottom:14px}
.pcard .thumb .fill{
  position:absolute;inset:0;
  background:linear-gradient(160deg,#e6e2d8,#c3bfb3 55%,#8c887d);
  transition:transform .9s cubic-bezier(.22,1,.36,1);
}
.pcard:nth-child(3n+2) .thumb .fill{background:linear-gradient(140deg,#cfd4d6,#9aa2a6 58%,#5f686c)}
.pcard:nth-child(3n) .thumb .fill{background:linear-gradient(175deg,#dcd4c4,#ada08a 60%,#6d6250)}
.pcard:hover .fill{transform:scale(1.04)}
.pcard h3{font-size:15.5px;letter-spacing:-.015em;font-weight:500;line-height:1.3}
.pcard p{font-size:12.5px;color:var(--muted);margin-top:5px}
.pcard .num{font-family:ui-monospace,monospace;font-size:10.5px;color:var(--muted);display:block;margin-bottom:10px}

/* 日历表格 */
table.cal{width:100%;border-collapse:collapse;font-size:13.5px}
table.cal th{
  text-align:left;font-weight:400;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);padding:0 0 12px;border-bottom:1px solid var(--ink);
}
table.cal td{padding:15px 0;border-bottom:1px solid var(--line);vertical-align:baseline}
table.cal td:first-child{width:56%}
table.cal td:nth-child(2){width:26%;color:var(--muted)}
table.cal td:last-child{width:18%;text-align:right;font-family:ui-monospace,monospace;font-size:11.5px;color:var(--muted)}
table.cal tr:hover td{background:var(--hover)}
table.cal tr td:first-child{padding-right:20px}

/* 双栏文本 */
.two{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,5vw,72px)}
.two p{font-size:15.5px;color:var(--muted);line-height:1.9;max-width:46ch}
.two .lead{color:var(--ink);font-size:clamp(1.05rem,1.5vw,1.28rem);line-height:1.6;letter-spacing:-.015em}
.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2.4vw,34px);margin-top:clamp(30px,4vw,54px)}
.nums div{border-top:1px solid var(--ink);padding-top:12px}
.nums b{display:block;font-size:clamp(1.6rem,3vw,2.4rem);font-weight:400;letter-spacing:-.04em;line-height:1}
.nums span{display:block;margin-top:8px;font-size:11.5px;color:var(--muted);letter-spacing:.02em}

/* 页头 */
.phead{max-width:1680px;margin:0 auto;padding:clamp(40px,6vw,92px) var(--pad) clamp(22px,3vw,38px)}
.phead h1{font-size:clamp(2rem,5.6vw,4.8rem);max-width:16ch;line-height:1}
.phead .sub{margin-top:20px;max-width:54ch;color:var(--muted);font-size:15px;line-height:1.85}

/* 页脚 */
.foot{border-top:1px solid var(--ink);margin-top:clamp(36px,5vw,72px)}
.foot-in{max-width:1680px;margin:0 auto;padding:clamp(28px,4vw,48px) var(--pad);
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:clamp(20px,4vw,48px)}
.foot h4{font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:12px;font-weight:400}
.foot ul{list-style:none;display:grid;gap:8px}
.foot a{font-size:13px;color:var(--muted)}
.foot a:hover{color:var(--ink)}
.foot p{font-size:13px;color:var(--muted);line-height:1.75;max-width:30ch}
.foot-btm{max-width:1680px;margin:0 auto;padding:14px var(--pad) 28px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-family:ui-monospace,monospace;font-size:10.5px;color:var(--muted)}

.rv{opacity:0;transform:translateY(16px);transition:opacity .8s ease,transform .8s cubic-bezier(.22,1,.36,1)}
.rv.in{opacity:1;transform:none}

@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  .hero-side{margin-top:8px}
  .row{grid-template-columns:44px 1fr 26px;row-gap:6px}
  .row p{grid-column:2;font-size:13px}
  .row .go{grid-row:1;grid-column:3}
  .cards{grid-template-columns:1fr 1fr}
  .two{grid-template-columns:1fr}
  .nums{grid-template-columns:1fr 1fr;gap:22px}
  .foot-in{grid-template-columns:1fr 1fr}
  table.cal td:nth-child(2){display:none}
  table.cal td:first-child{width:auto}
}
@media (max-width:600px){
  .top-in{height:60px}
  .brand span{display:none}
  .nav a{font-size:12px}
  .cards{grid-template-columns:1fr}
  #peek{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .rv{opacity:1;transform:none}
}