/* ============================================================
   姜晴 · 作品集 2026 — 个人网站
   Editorial layout / warm paper + ink + vermilion
   ============================================================ */

:root{
  --ink:#1b1815;
  --ink-2:#2e2924;
  --paper:#f5f1ea;
  --paper-2:#ece5d9;
  --accent:#af3a2a;
  --muted:#8b8073;
  --muted-2:#a69a8b;
  --line:#dbd2c4;
  --line-dark:rgba(245,241,234,.16);

  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;

  --pad:clamp(20px,5vw,76px);
  --max:1560px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:var(--accent);color:var(--paper)}

.skip{position:fixed;top:-60px;left:16px;z-index:200;background:var(--ink);color:var(--paper);padding:10px 16px}
.skip:focus{top:12px}

/* ------------------------------------------------ type helpers */
.kicker{
  font-size:11px;letter-spacing:.34em;text-transform:uppercase;
  color:var(--muted-2);font-weight:500;
}
.kicker span{color:var(--accent);margin:0 .2em}
.kicker--accent{color:var(--accent)}
.eyebrow{
  font-size:11px;letter-spacing:.3em;text-transform:uppercase;
  color:var(--muted);font-weight:500;margin-bottom:14px;
}
.eyebrow--accent{color:var(--accent)}
.eyebrow em{font-style:normal;letter-spacing:.02em;text-transform:none;color:var(--muted);margin-left:.6em}

/* ------------------------------------------------ nav */
.nav{
  position:fixed;inset:0 0 auto;z-index:100;
  display:flex;align-items:center;gap:32px;
  padding:0 var(--pad);height:66px;
  color:var(--paper);
  transition:background .4s,color .4s,border-color .4s;
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  background:rgba(245,241,234,.94);
  color:var(--ink);
  border-bottom-color:var(--line);
  backdrop-filter:blur(12px) saturate(120%);
}
.nav__brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700;font-size:17px;letter-spacing:.06em}
.nav__brand em{font-family:var(--sans);font-style:normal;font-size:9.5px;letter-spacing:.28em;opacity:.6;font-weight:500}
.dot{width:7px;height:7px;background:var(--accent);display:block;flex:none}
.nav__links{display:flex;gap:26px;margin-left:auto;font-size:12px;letter-spacing:.06em}
.nav__links a{position:relative;padding:4px 0;opacity:.82;transition:opacity .3s}
.nav__links a b{font-weight:400;font-size:9px;letter-spacing:.1em;color:var(--accent);margin-right:7px;opacity:.9}
.nav__links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .4s cubic-bezier(.2,.7,.2,1);
}
.nav__links a:hover{opacity:1}
.nav__links a:hover::after{transform:scaleX(1)}
.nav__meta{font-size:10px;letter-spacing:.28em;opacity:.55;margin-left:24px}

/* ------------------------------------------------ hero */
.hero{
  min-height:100svh;background:var(--ink);color:var(--paper);
  padding:0 0 0 var(--pad);
  display:flex;flex-direction:column;
  position:relative;overflow:hidden;
}
.hero__grid{
  flex:1;display:block;position:relative;
  padding:110px 0 0;
  min-height:0;
}
.hero__grid{display:flex;flex-direction:column;justify-content:center}
.hero__text{padding:clamp(16px,3vw,48px) 0;max-width:min(820px, calc(100% - clamp(260px,30vw,440px)))}
.hero__title{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(76px,11.5vw,168px);line-height:.94;letter-spacing:.02em;
  margin:18px 0 0;
}
.hero__role{
  font-size:clamp(12px,1.1vw,14px);letter-spacing:.22em;color:var(--muted-2);
  margin-top:26px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.hero__role i{font-style:normal;color:var(--accent);font-size:.9em}
.hero__lead{
  margin-top:34px;font-size:clamp(13px,1.05vw,15px);line-height:2.15;color:#b6a997;
  max-width:36em;
}
.hero__facts{
  display:flex;gap:clamp(24px,3.4vw,54px);margin-top:52px;
  border-top:1px solid var(--line-dark);padding-top:24px;
}
.hero__facts b{font-family:var(--serif);font-size:clamp(28px,2.6vw,38px);font-weight:700;display:block;line-height:1}
.hero__facts b span{font-size:.44em;letter-spacing:.02em;margin-left:2px;color:var(--muted-2)}
.hero__facts em{font-style:normal;font-size:10.5px;letter-spacing:.14em;color:var(--muted-2);display:block;margin-top:12px}

.hero__strip{
  position:absolute;top:66px;right:0;bottom:0;
  width:clamp(240px,26vw,390px);
  display:grid;grid-template-rows:repeat(3,minmax(0,1fr));gap:6px;
}
.hero__strip figure{overflow:hidden;background:#000;min-height:0;margin:0}
.hero__strip img{width:100%;height:100%;object-fit:cover;filter:saturate(1.02);
  animation:drift 26s ease-in-out infinite alternate}
.hero__strip figure:nth-child(2) img{animation-delay:-8s}
.hero__strip figure:nth-child(3) img{animation-delay:-15s}
@keyframes drift{from{transform:scale(1.02)}to{transform:scale(1.09)}}

.hero__foot{
  display:flex;justify-content:space-between;align-items:center;gap:24px;
  padding:0 clamp(240px,26vw,390px) 26px 0;
  font-size:9.5px;letter-spacing:.3em;color:var(--muted);
  position:relative;z-index:2;
}
.hero__scroll{display:flex;align-items:center;gap:12px}
.hero__scroll i{display:block;width:1px;height:34px;background:linear-gradient(var(--accent),transparent);
  animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.25}50%{opacity:1}}

/* ------------------------------------------------ ticker */
.ticker{
  border-bottom:1px solid var(--line);border-top:1px solid var(--line);
  overflow:hidden;padding:20px 0;background:var(--paper);
}
.ticker__track{
  display:flex;gap:34px;white-space:nowrap;width:max-content;
  animation:marquee 46s linear infinite;
  font-family:var(--serif);font-size:clamp(18px,2vw,26px);font-weight:700;letter-spacing:.04em;
  color:#c6b8a5;
}
.ticker__track span:nth-child(even){color:var(--accent);font-size:.6em;align-self:center}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ------------------------------------------------ chapter */
.chapter{padding:clamp(72px,9vw,132px) var(--pad) clamp(40px,6vw,80px);max-width:var(--max);margin:0 auto}
.chapter__head{
  display:grid;grid-template-columns:1fr auto;
  grid-template-areas:"no aside" "intro aside";
  column-gap:40px;margin-bottom:clamp(48px,6vw,88px);position:relative;
}
.chapter__no{
  grid-area:no;
  font-family:var(--serif);font-weight:700;
  font-size:clamp(92px,12.5vw,186px);line-height:.78;letter-spacing:-.02em;
  color:#e2d8c7;margin-bottom:.10em;display:block;
}
.chapter__intro{grid-area:intro;position:relative;z-index:1;max-width:780px}
.chapter__intro h2{
  font-family:var(--serif);font-weight:700;font-size:clamp(34px,4.2vw,58px);
  line-height:1.14;letter-spacing:.02em;
}
.chapter__lead{margin-top:22px;font-size:clamp(13px,1.05vw,15px);line-height:2.1;color:#5d5449}
.chapter__aside{
  grid-area:aside;align-self:start;justify-self:end;padding-top:18px;
  display:flex;flex-direction:column;align-items:flex-end;gap:20px;
  text-align:right;
}
.chapter__aside ul{list-style:none;display:grid;gap:11px}
.chapter__aside li{font-size:11.5px;letter-spacing:.1em;color:#7c7266}
.chapter__aside li::before{content:"";display:inline-block;width:14px;height:1px;background:var(--accent);
  vertical-align:middle;margin-right:10px;opacity:.7}
.chapter__pages{font-size:10px;letter-spacing:.28em;color:var(--muted-2)}

/* ------------------------------------------------ case */
.case{
  border-top:1px solid var(--line);
  padding:clamp(36px,4.6vw,64px) 0 clamp(48px,6vw,80px);
}
.case:first-of-type{border-top:0;padding-top:0}
.case__head{display:flex;justify-content:space-between;align-items:baseline;gap:32px;margin-bottom:clamp(24px,3vw,40px);flex-wrap:wrap}
.case__head h3{
  font-family:var(--serif);font-weight:700;font-size:clamp(21px,2.1vw,30px);
  line-height:1.3;letter-spacing:.01em;
}
.case__meta{font-size:10.5px;letter-spacing:.16em;color:var(--muted);white-space:nowrap}
.case__note{margin-top:26px;font-size:13.5px;line-height:2;color:#5d5449;max-width:64em}
.case__label{font-size:11px;letter-spacing:.16em;color:var(--accent);margin:8px 0 14px}
.case__label--muted{color:var(--muted);margin-top:32px}
.case__micro{font-size:12px;line-height:1.95;color:var(--muted);margin-top:18px;max-width:34em}
.case__body--split{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,.72fr);gap:clamp(28px,4.2vw,68px);align-items:start}
.case__body--top{align-items:start}
.case__side{padding-top:6px}
.case__side h4{
  font-family:var(--serif);font-weight:700;font-size:clamp(19px,1.75vw,25px);line-height:1.45;
  margin-bottom:16px;
}
.case__side p{font-size:13.5px;line-height:2.05;color:#5d5449}

/* dark case */
.case--dark{
  background:var(--ink);color:var(--paper);
  margin:0 calc(var(--pad) * -1);padding:clamp(48px,6vw,84px) var(--pad);
  border-top:0;
}
.case--dark .case__head h3{color:var(--paper)}
.case--dark .case__meta{color:var(--muted-2)}
.case--dark .case__side p,.case--dark .case__side h4{color:var(--paper)}
.case--dark .case__side p{color:#b6a997}
.case--dark .case__note--dark{color:#b6a997}

/* screens */
.screens{display:grid;gap:clamp(12px,1.4vw,22px)}
.screens--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.screens--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.screens--video{grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(10px,1.2vw,18px)}
.shot{margin:0}
.shot img{
  width:100%;height:auto;border:1px solid var(--line);
  transition:transform .7s cubic-bezier(.2,.7,.2,1),box-shadow .7s;
  transform-origin:center;
}
.shot:hover img{transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(27,24,21,.55)}
.shot figcaption{
  margin-top:12px;font-size:11px;line-height:1.8;color:var(--muted);letter-spacing:.02em;
}
.shot figcaption b{display:block;color:var(--accent);font-weight:500;letter-spacing:.06em}
.screens--dark .shot img{border-color:rgba(245,241,234,.14)}
.shot--video img{aspect-ratio:9/19.4;object-fit:cover;object-position:top}

/* metrics */
.metrics{display:grid;gap:clamp(16px,2vw,28px);margin-top:clamp(32px,3.6vw,48px);border-top:1px solid var(--line);padding-top:clamp(22px,2.6vw,34px)}
.metrics--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.metrics b{
  font-family:var(--serif);font-size:clamp(30px,3.4vw,46px);font-weight:700;display:block;line-height:1;
  color:var(--accent);letter-spacing:-.01em;
}
.metrics span{display:block;margin-top:12px;font-size:11px;letter-spacing:.12em;color:var(--muted)}

/* band */
.band{
  display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:20px;
  border-top:1px solid var(--line-dark);margin-top:clamp(36px,4vw,56px);
  padding-top:clamp(24px,3vw,36px);
}
.band b{font-family:var(--serif);font-size:clamp(22px,2.4vw,34px);font-weight:700;display:block;line-height:1}
.band span{display:block;margin-top:12px;font-size:10.5px;letter-spacing:.14em;color:var(--muted-2)}

/* big number */
.big{display:flex;align-items:baseline;gap:16px;margin-top:30px}
.big b{font-family:var(--serif);font-size:clamp(40px,4.4vw,60px);font-weight:700;line-height:.9;color:var(--accent)}
.big b span{font-size:.5em;vertical-align:super}
.big em{font-style:normal;font-size:11.5px;letter-spacing:.1em;color:var(--muted)}
.big--row{align-items:center;gap:20px}
.big--row em{max-width:14em;line-height:1.8}

/* steps */
.steps{list-style:none;display:flex;flex-direction:column;gap:clamp(20px,2.4vw,32px)}
.steps li{border-top:1px solid var(--line);padding-top:18px;display:grid;grid-template-columns:auto 1fr;column-gap:16px}
.steps b{font-size:10px;letter-spacing:.12em;color:var(--accent);padding-top:5px}
.steps h5{font-family:var(--serif);font-size:clamp(15px,1.4vw,18px);font-weight:700;letter-spacing:.04em}
.steps p{grid-column:2;font-size:12.5px;line-height:1.95;color:var(--muted);margin-top:8px}

/* detail page */
.detailpage{margin:0}
.detailpage img{width:100%;height:auto;border:1px solid var(--line);display:block}
.detailpage figcaption{margin-top:12px;font-size:10.5px;letter-spacing:.14em;color:var(--muted)}
.framework-row{
  display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,5vw,90px);
  border-top:1px solid var(--line);margin-top:clamp(28px,3.4vw,44px);padding-top:clamp(24px,3vw,36px);
}
.framework h4{font-family:var(--serif);font-size:clamp(18px,1.6vw,23px);font-weight:700;margin-bottom:8px}
.framework ol{list-style:none;display:grid;grid-template-columns:1fr 1fr;column-gap:clamp(24px,3vw,56px)}
.framework li{
  display:flex;gap:12px;align-items:baseline;
  border-bottom:1px solid var(--line);padding:11px 0;font-size:13px;letter-spacing:.02em;
}
.framework li span{font-size:9px;letter-spacing:.1em;color:var(--muted-2)}
.framework__result{display:flex;flex-direction:column;justify-content:center}
.framework__note{font-size:12px;line-height:1.95;color:var(--muted);margin-top:14px;max-width:28em}

/* rows of 5 */
.row5{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:clamp(8px,1vw,14px)}
.row5 img{width:100%;height:auto;border:1px solid var(--line)}
.row5--small img{aspect-ratio:3/4;object-fit:cover;object-position:center}
.notes{list-style:none;display:flex;flex-wrap:wrap;gap:10px 34px;margin-top:34px}
.notes li{font-size:12.5px;color:#5d5449;letter-spacing:.02em}
.notes li::before{content:"—";color:var(--accent);margin-right:10px}

/* mix list */
.mixlist div{border-bottom:1px solid var(--line);padding:16px 0}
.mixlist dt{font-family:var(--serif);font-size:15px;font-weight:700;letter-spacing:.06em}
.mixlist dd{font-size:12px;color:var(--muted);margin-top:6px;line-height:1.8}
.case--dark .mixlist div{border-bottom-color:var(--line-dark)}
.case--dark .mixlist dt{color:var(--paper)}
.case--dark .mixlist dd{color:var(--muted-2)}

/* mix row (3 columns under the screens) */
.mixrow{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,56px);
  border-top:1px solid var(--line);margin-top:clamp(24px,3vw,36px);padding-top:clamp(20px,2.4vw,28px);
}
.mixrow div{border:0;padding:0}
.mixrow dt{font-family:var(--serif);font-size:clamp(15px,1.4vw,18px);font-weight:700;letter-spacing:.06em}
.mixrow dd{font-size:12.5px;color:var(--muted);margin-top:8px;line-height:1.85}

/* cards */
.cards{display:grid;gap:clamp(8px,1vw,14px)}
.cards--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cards--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.cards img{width:100%;height:auto;border:1px solid #e6dfd3;background:#fff;transition:transform .5s,box-shadow .5s}
.cards img:hover{transform:translateY(-3px);box-shadow:0 16px 30px -22px rgba(27,24,21,.5)}
.cards--dark img{border-color:rgba(245,241,234,.14)}

/* portals */
.portals{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,64px)}
.portals__col img{width:100%;height:auto;border:1px solid #e6dfd3;background:#fff;margin-bottom:10px}
.portals__col .eyebrow{display:flex;align-items:baseline;gap:10px;margin-bottom:18px;color:var(--ink);letter-spacing:.18em;font-size:12px}

/* posters */
.posters{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:clamp(10px,1.2vw,18px)}
.poster{
  padding:0;border:1px solid var(--line);background:var(--paper-2);
  aspect-ratio:3/4.15;overflow:hidden;position:relative;
  transition:transform .5s cubic-bezier(.2,.7,.2,1),box-shadow .5s;
}
.poster img{width:100%;height:100%;object-fit:cover;transition:transform .9s cubic-bezier(.2,.7,.2,1)}
.poster:hover{transform:translateY(-5px);box-shadow:0 24px 46px -28px rgba(27,24,21,.6);z-index:2}
.poster:hover img{transform:scale(1.04)}
.poster::after{
  content:"";position:absolute;inset:0;border:1px solid rgba(27,24,21,.06);pointer-events:none;
}

/* meeting */
.meeting{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr)) minmax(0,.9fr);
  gap:clamp(18px,2.4vw,34px);margin-top:clamp(48px,6vw,84px);
  border-top:1px solid var(--line);padding-top:clamp(36px,4vw,56px);
  align-items:end;
}
.meeting__item img{width:100%;height:auto;border:1px solid var(--line)}
.meeting__item p{font-size:11px;letter-spacing:.14em;color:var(--muted);margin-top:12px}
.meeting__text ul{list-style:none;margin:6px 0 16px}
.meeting__text li{font-size:13px;padding:9px 0;border-bottom:1px solid var(--line);letter-spacing:.03em}

/* about */
.about{display:grid;grid-template-columns:minmax(0,1fr) clamp(200px,22vw,300px);gap:clamp(32px,5vw,90px);align-items:start}
.about__lead{font-family:var(--serif);font-weight:700;font-size:clamp(24px,2.7vw,38px);line-height:1.62;letter-spacing:.01em}
.about__p{margin-top:28px;font-size:14px;line-height:2.1;color:#5d5449;max-width:38em}
.about__stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:clamp(36px,4vw,56px);border-top:1px solid var(--line);padding-top:clamp(20px,2.4vw,30px)}
.about__stats b{font-family:var(--serif);font-size:clamp(26px,2.8vw,40px);font-weight:700;display:block;line-height:1;color:var(--accent)}
.about__stats b span{font-size:.4em;margin-left:2px;color:var(--muted)}
.about__stats em{font-style:normal;display:block;margin-top:12px;font-size:10.5px;letter-spacing:.1em;color:var(--muted)}

.about__aside{position:sticky;top:100px}
.about__portrait{border:1px solid var(--line);background:#fff;overflow:hidden}
.about__portrait img{width:100%;height:auto;transition:transform 1.1s cubic-bezier(.2,.7,.2,1)}
.about__aside:hover .about__portrait img{transform:scale(1.03)}
.about__name{font-family:var(--serif);font-size:17px;font-weight:700;margin-top:18px;letter-spacing:.06em}
.about__name em{font-family:var(--sans);font-style:normal;font-size:9.5px;letter-spacing:.26em;color:var(--muted);margin-left:10px}
.about__loc{font-size:10.5px;letter-spacing:.16em;color:var(--muted);margin-top:8px}

.timeline{margin-top:clamp(44px,5vw,72px);border-top:1px solid var(--line)}
.timeline__row{display:grid;grid-template-columns:clamp(120px,15vw,190px) 1fr;gap:24px;padding:26px 0;border-bottom:1px solid var(--line)}
.timeline__year{font-size:11px;letter-spacing:.12em;color:var(--accent);padding-top:6px}
.timeline__row h5{font-family:var(--serif);font-size:clamp(17px,1.6vw,21px);font-weight:700;letter-spacing:.03em}
.timeline__row p{font-size:11.5px;letter-spacing:.06em;color:var(--muted);margin-top:6px}
.timeline__row ul{list-style:none;margin-top:14px;display:grid;gap:6px}
.timeline__row li{font-size:12.5px;color:#5d5449;line-height:1.9}
.timeline__row li::before{content:"·";color:var(--accent);margin-right:10px}

.skills{margin-top:clamp(36px,4vw,56px)}
.skills__list{font-size:13px;letter-spacing:.04em;line-height:2.2}
.skills__list--muted{color:var(--muted)}

/* contact */
.contact{background:var(--ink);color:var(--paper);padding:clamp(80px,10vw,140px) var(--pad) 46px;margin-top:clamp(60px,8vw,110px)}
.contact__inner{max-width:var(--max);margin:0 auto}
.contact h2{
  font-family:var(--serif);font-weight:700;font-size:clamp(30px,4.4vw,62px);line-height:1.5;
  letter-spacing:.01em;margin:26px 0 0;
}
.contact__foot{
  display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;
  border-top:1px solid var(--line-dark);margin-top:clamp(48px,6vw,80px);padding-top:28px;
}
.contact__name{font-size:12px;letter-spacing:.08em;color:#b6a997}
.contact__name em{font-style:normal;letter-spacing:.24em;font-size:10px;color:var(--muted)}
.btn{
  display:inline-flex;align-items:center;gap:14px;
  border:1px solid rgba(245,241,234,.3);padding:13px 22px;
  font-size:11.5px;letter-spacing:.16em;
  transition:background .35s,color .35s,border-color .35s;
}
.btn span{color:var(--accent)}
.btn:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.colophon{
  display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;
  margin-top:clamp(48px,6vw,76px);padding-top:18px;border-top:1px solid rgba(245,241,234,.08);
  font-size:10px;letter-spacing:.08em;color:var(--muted);
}
.colophon span{display:block;letter-spacing:.3em;color:var(--accent);margin-bottom:6px;font-size:9px}

/* lightbox */
.lightbox{
  position:fixed;inset:0;z-index:300;background:rgba(24,20,17,.97);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
  opacity:0;pointer-events:none;transition:opacity .35s;
  padding:48px;
}
.lightbox.is-open{opacity:1;pointer-events:auto}
.lightbox img{max-width:min(94vw,1240px);max-height:84vh;object-fit:contain;box-shadow:0 40px 90px -50px #000;background:#fff}
.lightbox__cap{color:var(--muted-2);font-size:11px;letter-spacing:.2em}
.lightbox__close{
  position:absolute;top:22px;right:26px;font-size:30px;line-height:1;color:var(--paper);
  width:44px;height:44px;display:grid;place-items:center;transition:transform .3s,color .3s;
}
.lightbox__close:hover{transform:rotate(90deg);color:var(--accent)}

/* reveal */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity 1s cubic-bezier(.2,.7,.2,1),transform 1s cubic-bezier(.2,.7,.2,1)}
.js .reveal.is-in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.08s}
.reveal[data-delay="2"]{transition-delay:.16s}
.reveal[data-delay="3"]{transition-delay:.24s}
.reveal[data-delay="4"]{transition-delay:.32s}

@supports (animation-timeline: view()){
  .case,.posters,.meeting,.about{
    animation:rise linear both;
    animation-timeline:view();
    animation-range:entry 0% entry 38%;
  }
}
@keyframes rise{from{opacity:0;transform:translateY(34px)}to{opacity:1;transform:none}}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .js .reveal,.reveal{opacity:1!important;transform:none!important}
  .case,.posters,.meeting,.about{opacity:1!important;transform:none!important;animation:none!important}
}

/* ------------------------------------------------ responsive */
@media(max-width:1180px){
  .posters{grid-template-columns:repeat(4,minmax(0,1fr))}
  .cards--4{grid-template-columns:repeat(3,minmax(0,1fr))}
  .meeting{grid-template-columns:repeat(3,minmax(0,1fr))}
  .meeting__text{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:0 48px;align-items:start}
  .meeting__text ul{grid-row:2}
}
@media(max-width:960px){
  .nav__links{display:none}
  .nav__meta{margin-left:auto}
  .hero{padding-left:var(--pad)}
  .hero__grid{padding-top:96px}
  .hero__text{max-width:none}
  .hero__strip{display:none}
  .hero__foot{padding-right:0}
  .hero__foot{padding:24px 0 20px;gap:16px;flex-wrap:wrap}
  .case__body--split{grid-template-columns:1fr}
  .about{grid-template-columns:1fr}
  .about__aside{position:static;order:-1;max-width:260px}
  .screens--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .screens--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metrics--4{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .about__stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .band{grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
  .portals{grid-template-columns:1fr}
  .detailwall{columns:2}
  .framework ol{grid-template-columns:1fr}
  .framework-row{grid-template-columns:1fr}
  .cards--3,.cards--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .posters{grid-template-columns:repeat(3,minmax(0,1fr))}
  .row5{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:640px){
  body{font-size:15px}
  .nav{height:58px}
  .nav__brand em{display:none}
  .nav__meta{font-size:9px;letter-spacing:.2em}
  .hero__title{font-size:clamp(64px,18vw,96px)}
  .hero__role{font-size:11px;letter-spacing:.14em;gap:8px}
  .hero__facts{gap:20px}
  .hero__lead{font-size:12.5px;line-height:2}
  .chapter__head{grid-template-columns:1fr;grid-template-areas:"no" "intro";}
  .chapter__aside{display:none}
  .chapter__no{font-size:clamp(76px,22vw,110px)}
  .screens--3,.screens--4,.screens--video{grid-template-columns:repeat(2,minmax(0,1fr))}
  .screens--video{grid-template-columns:repeat(3,minmax(0,1fr))}
  .posters{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cards--3,.cards--4{grid-template-columns:1fr}
  .band{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metrics--4{grid-template-columns:1fr 1fr}
  .meeting{grid-template-columns:1fr 1fr}
  .meeting__text{grid-template-columns:1fr}
  .timeline__row{grid-template-columns:1fr;gap:10px}
  .contact h2{line-height:1.6}
  .colophon{font-size:9px}
  .lightbox{padding:20px}
}

/* ---- intrinsic aspect ratios (prevent layout shift before images load) ---- */
.screens--3 .shot:not(.shot--video) img{aspect-ratio:1482/1600;object-fit:cover;object-position:top}
.screens--4 .shot img{aspect-ratio:741/1600;object-fit:cover;object-position:top}
.row5:not(.row5--small) img{aspect-ratio:1/1.004;object-fit:cover}

/* ---- mobile typography fixes ---- */
@media(max-width:640px){
  .kicker{font-size:8.5px;letter-spacing:.18em;line-height:1.9}
  .chapter__no{line-height:.86;margin-bottom:.16em}
  .hero__sign{display:none}
  .hero__foot{padding-bottom:22px}
  .hero__lead{letter-spacing:0}
  .metrics b{font-size:clamp(26px,8vw,34px)}
  .case__head h3{font-size:clamp(19px,5.4vw,24px)}
  .case__meta{white-space:normal}
  .about__lead{font-size:clamp(20px,6vw,26px);line-height:1.7}
  .contact h2{font-size:clamp(26px,7.4vw,34px)}
  .poster{aspect-ratio:3/4.1}
}