/* ==========================================================================
   Roxelle Design Studio — 芮岚诗空间设计
   Static site. No build step, no dependencies.
   Palette is token-driven: :root is warm, [data-palette="cool"] overrides.
   ========================================================================== */

/* ---- self-hosted type (Google Fonts is unreachable from mainland China) --- */
@font-face{font-family:"Inter Tight";src:url("/fonts/inter-tight-latin-300-normal.woff2") format("woff2");font-weight:300;font-style:normal;font-display:swap}
@font-face{font-family:"Inter Tight";src:url("/fonts/inter-tight-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Inter Tight";src:url("/fonts/inter-tight-latin-500-normal.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Spectral";src:url("/fonts/spectral-latin-200-normal.woff2") format("woff2");font-weight:200;font-style:normal;font-display:swap}
@font-face{font-family:"Spectral";src:url("/fonts/spectral-latin-300-normal.woff2") format("woff2");font-weight:300;font-style:normal;font-display:swap}
@font-face{font-family:"Spectral";src:url("/fonts/spectral-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}

/* ---- WARM (default) ---------------------------------------------------- */
:root{
  --ink:#3A322E;
  --ink-soft:#6E625B;
  --ink-faint:#9A8D84;
  --paper:#F4F1EA;
  --paper-alt:#EAE3D6;
  --panel:#E2D9C9;
  --stone:#C0C0A8;
  --champagne:#F0D8C0;
  --taupe:#D8C0A8;
  --umber:#604848;
  --accent:#604848;
  --dark:#2E2724;
  --dark-soft:#4A403B;
  --line:rgba(58,50,46,.16);
  --line-soft:rgba(58,50,46,.09);
  --scrim:26,21,19;

  --sans:"Inter Tight","Inter",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  --serif:"Spectral",Georgia,"Songti SC","Source Han Serif SC","Noto Serif CJK SC","STSong","PingFang SC",serif;
  --cn:"Songti SC","Source Han Serif SC","Noto Serif CJK SC","STSong","PingFang SC",serif;

  --gutter:clamp(1.5rem,5vw,6rem);
  --measure:38rem;
  --rule:1px;
}

/* ---- COOL (Susan's stated brand palette) -------------------------------- */
[data-palette="cool"]{
  --ink:#343B3F;
  --ink-soft:#66727A;
  --ink-faint:#95A0A7;
  --paper:#F7F5F1;
  --paper-alt:#E9E6E0;
  --panel:#DDE4E9;
  --stone:#B4C6D2;
  --champagne:#DCE5EB;
  --taupe:#C8D4DC;
  --umber:#343B3F;
  --accent:#5C7488;
  --dark:#2B3135;
  --dark-soft:#414A4F;
  --line:rgba(52,59,63,.16);
  --line-soft:rgba(52,59,63,.09);
  --scrim:20,25,28;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:clamp(15px,.55vw + 13.4px,17px);
  line-height:1.65;font-weight:350;letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:400;letter-spacing:-.015em;line-height:1.12}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}

.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);padding:.75rem 1.25rem;z-index:200}
.skip:focus{left:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---- layout ------------------------------------------------------------- */
.wrap{padding-inline:var(--gutter)}
.section{padding-block:clamp(4rem,9vw,9rem)}
.section--tight{padding-block:clamp(3rem,6vw,6rem)}
.rule{height:var(--rule);background:var(--line);border:0;margin:0}

.eyebrow{
  font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--ink-faint);font-weight:500;margin:0 0 1.6rem;
}
.display{font-family:var(--serif);font-weight:300;font-size:clamp(2.4rem,6.2vw,5.2rem);line-height:1.02;letter-spacing:-.025em}
.h2{font-family:var(--serif);font-weight:300;font-size:clamp(1.9rem,3.6vw,3.1rem);line-height:1.1;letter-spacing:-.02em}
.h3{font-family:var(--serif);font-weight:400;font-size:clamp(1.25rem,1.9vw,1.6rem)}
.lede{font-size:clamp(1.05rem,1.25vw,1.28rem);line-height:1.55;color:var(--ink-soft);max-width:var(--measure)}
.body{max-width:var(--measure);color:var(--ink-soft)}
.cn{font-family:var(--cn);font-weight:300;letter-spacing:.04em}

/* ---- header ------------------------------------------------------------- */
.site-header{
  position:sticky;top:0;z-index:100;background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:saturate(140%) blur(14px);-webkit-backdrop-filter:saturate(140%) blur(14px);
  border-bottom:var(--rule) solid var(--line-soft);
}
.site-header__inner{display:flex;align-items:center;gap:2rem;min-height:76px;padding-inline:var(--gutter)}
.brand{display:flex;align-items:center;gap:.85rem;flex:0 0 auto}
.brand img{width:auto;height:34px}
.brand__txt{display:none}
@media(min-width:560px){
  .brand__txt{display:block;line-height:1.1}
  .brand__txt b{display:block;font-family:var(--serif);font-weight:400;font-size:1rem;letter-spacing:.16em;text-transform:uppercase}
  .brand__txt span{display:block;font-family:var(--cn);font-size:.68rem;letter-spacing:.3em;color:var(--ink-faint);margin-top:.15rem}
}
.nav{margin-left:auto;display:flex;align-items:center;gap:clamp(1rem,2.4vw,2.4rem)}
.nav a{font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);padding-block:.5rem;position:relative}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:.15rem;height:1px;background:var(--ink);transition:right .3s ease}
.nav a:hover::after,.nav a:focus-visible::after,.nav a[aria-current="page"]::after{right:0}
.nav a[aria-current="page"]{color:var(--ink)}
.nav__more{display:none}
@media(max-width:820px){
  .nav{gap:.9rem}
  .nav a{font-size:.72rem;letter-spacing:.08em}
  .nav .nav__sub{display:none}
}

/* ---- hero --------------------------------------------------------------- */
.hero{position:relative;background:var(--dark);color:#F5F1EA;isolation:isolate}
.hero__media{position:absolute;inset:0;z-index:-2;overflow:hidden}
.hero__media img{width:100%;height:100%;object-fit:cover;object-position:center 54%}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(180deg,rgba(var(--scrim),.42) 0%,rgba(var(--scrim),0) 34%),
    linear-gradient(0deg,rgba(var(--scrim),.38) 0%,rgba(var(--scrim),0) 38%),
    linear-gradient(100deg,rgba(var(--scrim),.78) 0%,rgba(var(--scrim),.52) 46%,rgba(var(--scrim),.16) 100%);
}
.hero__inner{padding-block:clamp(6rem,17vw,13rem);max-width:56rem}
.hero .display{color:#F7F3EC}
.hero__sub{margin-top:1.8rem;max-width:32rem;color:rgba(247,243,236,.78);font-size:clamp(1rem,1.15vw,1.18rem)}
.hero__meta{margin-top:3rem;display:flex;flex-wrap:wrap;gap:.9rem 2.2rem;font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:rgba(247,243,236,.6)}

.hero__credit{
  position:absolute;right:var(--gutter);bottom:1.6rem;margin:0;
  font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(247,243,236,.64);text-align:right;max-width:60%;text-shadow:0 1px 12px rgba(0,0,0,.45);
}
.hero__credit .cn{letter-spacing:.1em;text-transform:none}
@media(max-width:700px){.hero__credit{position:static;padding:1.2rem var(--gutter) 1.6rem;text-align:left;max-width:none}}

/* ---- buttons ------------------------------------------------------------ */
.btn{
  display:inline-flex;align-items:center;gap:.7rem;
  font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;
  padding:.95rem 1.7rem;border:var(--rule) solid currentColor;color:var(--ink);
  background:transparent;cursor:pointer;font-family:inherit;
  transition:background .35s ease,color .35s ease;
}
.btn:hover,.btn:focus-visible{background:var(--ink);color:var(--paper)}
.btn--light{color:#F7F3EC}
.btn--light:hover,.btn--light:focus-visible{background:#F7F3EC;color:var(--dark)}
.btn--solid{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn--solid:hover,.btn--solid:focus-visible{background:transparent;color:var(--ink)}
.arrow{transition:transform .35s ease}
.btn:hover .arrow{transform:translateX(4px)}

/* ---- statement ---------------------------------------------------------- */
.statement{display:grid;gap:clamp(2rem,5vw,5rem);grid-template-columns:1fr}
@media(min-width:900px){.statement{grid-template-columns:minmax(0,20rem) minmax(0,1fr)}}
.statement__body{max-width:44rem}
.statement__body p{font-family:var(--serif);font-size:clamp(1.2rem,1.7vw,1.6rem);line-height:1.5;font-weight:300;color:var(--ink)}

/* ---- services ----------------------------------------------------------- */
.grid-services{display:grid;gap:0;border-top:var(--rule) solid var(--line)}
@media(min-width:760px){.grid-services{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1140px){.grid-services{grid-template-columns:repeat(4,1fr)}}
.service{padding:2.4rem 0 2.6rem;border-bottom:var(--rule) solid var(--line);display:block}
@media(min-width:760px){
  .service{padding:2.6rem clamp(1rem,2vw,2rem) 3rem;border-right:var(--rule) solid var(--line)}
  .service:nth-child(2n){border-right:0}
  .service:first-child{padding-left:0}
}
@media(min-width:1140px){
  .service{border-right:var(--rule) solid var(--line)}
  .service:nth-child(2n){border-right:var(--rule) solid var(--line)}
  .service:last-child{border-right:0;padding-right:0}
}
.service__no{font-size:.7rem;letter-spacing:.2em;color:var(--ink-faint);display:block;margin-bottom:1.1rem}
.service h3{margin-bottom:.8rem}
.service p{font-size:.95rem;color:var(--ink-soft);margin-bottom:1.4rem}
.service__go{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:.2rem}
.service:hover .service__go{border-color:var(--ink)}

/* ---- register (signature element) --------------------------------------- */
.register{display:grid;gap:clamp(2rem,4vw,4rem);align-items:start}
@media(min-width:980px){.register{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr)}}
.register__list{list-style:none;margin:0;padding:0;border-top:var(--rule) solid var(--line)}
.register__row{
  display:block;width:100%;text-align:left;background:none;border:0;border-bottom:var(--rule) solid var(--line);
  padding:1.6rem 0;font-family:inherit;color:var(--ink);cursor:pointer;
  display:grid;grid-template-columns:2.6rem minmax(0,1fr) 1.4rem;gap:1rem;align-items:baseline;
  transition:padding-left .4s cubic-bezier(.2,.7,.3,1),color .3s ease;
}
.register__row:hover,.register__row:focus-visible,.register__row.is-active{padding-left:.8rem}
.register__row.is-active{color:var(--ink)}
.register__row:not(.is-active){color:var(--ink-soft)}
.register__no{font-size:.7rem;letter-spacing:.16em;color:var(--ink-faint);font-variant-numeric:tabular-nums}
.register__name{font-family:var(--serif);font-size:clamp(1.35rem,2.4vw,2rem);font-weight:300;line-height:1.15;letter-spacing:-.02em;display:block}
.register__cn{display:block;font-family:var(--cn);font-size:.82rem;letter-spacing:.14em;color:var(--ink-faint);margin-top:.45rem}
.register__meta{display:block;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);margin-top:.6rem}
.register__row .arrow{justify-self:end;opacity:0;transform:translateX(-6px);transition:all .35s ease;font-size:.9rem}
.register__row:hover .arrow,.register__row.is-active .arrow,.register__row:focus-visible .arrow{opacity:1;transform:none}

.register__panel{position:relative;aspect-ratio:4/5;background:var(--panel);overflow:hidden}
@media(min-width:980px){.register__panel{position:sticky;top:120px}}
.register__panel img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:0;transition:opacity .55s ease;
}
.register__panel img.is-shown{opacity:1}
.register__caption{
  position:absolute;left:0;right:0;bottom:0;padding:1.2rem 1.4rem;
  background:linear-gradient(to top,rgba(30,25,22,.72),rgba(30,25,22,0));
  color:#F7F3EC;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;
}

/* ---- project pages ------------------------------------------------------ */
.page-head{padding-top:clamp(3.5rem,7vw,6.5rem);padding-bottom:clamp(2rem,4vw,3.5rem)}
.page-head .display{max-width:18ch}
.page-head .lede{margin-top:1.6rem}

.figure-full{margin:0}
.figure-full img{width:100%;aspect-ratio:16/9;object-fit:cover}
.figure-full figcaption,.gallery figcaption{
  margin-top:.8rem;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);
}

.project{display:grid;gap:clamp(1.6rem,3vw,3rem);padding-block:clamp(2.5rem,5vw,4.5rem);border-top:var(--rule) solid var(--line)}
@media(min-width:900px){.project{grid-template-columns:minmax(0,17rem) minmax(0,1fr)}}
.project__aside .h3{margin-bottom:.5rem}
.project__aside .cn{display:block;color:var(--ink-faint);font-size:.85rem;margin-bottom:1.1rem}
.project__aside dl{margin:1.4rem 0 0;font-size:.8rem;letter-spacing:.06em}
.project__aside dt{color:var(--ink-faint);text-transform:uppercase;letter-spacing:.16em;font-size:.68rem;margin-top:.9rem}
.project__aside dd{margin:.25rem 0 0}

.gallery{display:grid;gap:clamp(.75rem,1.4vw,1.4rem);grid-template-columns:repeat(2,1fr)}
@media(min-width:900px){.gallery{grid-template-columns:repeat(3,1fr)}}
.gallery figure{margin:0}
.gallery img{width:100%;aspect-ratio:4/5;object-fit:cover;transition:transform .8s cubic-bezier(.2,.7,.3,1)}
.gallery figure:hover img{transform:scale(1.03)}
.gallery .span-2{grid-column:span 2}
.gallery .tall img{aspect-ratio:3/4}

/* ---- collections cards --------------------------------------------------- */
.cards{display:grid;gap:clamp(1.2rem,2.4vw,2.4rem);grid-template-columns:1fr}
@media(min-width:760px){.cards{grid-template-columns:repeat(2,1fr)}}
.card{display:block;background:var(--paper-alt);position:relative;overflow:hidden}
.card__img{aspect-ratio:3/2;overflow:hidden}
.card__img img{width:100%;height:100%;object-fit:cover;transition:transform .9s cubic-bezier(.2,.7,.3,1)}
.card:hover .card__img img{transform:scale(1.04)}
.card__body{padding:1.6rem clamp(1.2rem,2vw,2rem) 2rem}
.card__body h3{margin-bottom:.55rem}
.card__body p{font-size:.93rem;color:var(--ink-soft);margin-bottom:1.2rem}
.card__go{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase}

/* ---- about --------------------------------------------------------------- */
.people{display:grid;gap:clamp(1.5rem,3vw,3rem);grid-template-columns:1fr}
@media(min-width:760px){.people{grid-template-columns:repeat(2,1fr)}}
.person{border-top:var(--rule) solid var(--line);padding-top:1.6rem}
.person h3{margin-bottom:.3rem}
.person .role{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:1.1rem}
.person p{font-size:.95rem;color:var(--ink-soft)}
.person ul{margin:1rem 0 0;padding-left:1.1rem;font-size:.9rem;color:var(--ink-soft)}
.person li{margin-bottom:.4rem}

/* ---- contact ------------------------------------------------------------- */
.contact{display:grid;gap:clamp(2.5rem,5vw,5rem)}
@media(min-width:900px){.contact{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
.field{margin-bottom:1.5rem}
.field label{display:block;font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:.5rem}
.field input,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:var(--rule) solid var(--line);
  padding:.7rem 0;font:inherit;color:var(--ink);border-radius:0;
}
.field input:focus,.field textarea:focus{outline:0;border-bottom-color:var(--ink)}
.field textarea{min-height:7rem;resize:vertical}
.detail-list{list-style:none;margin:0;padding:0}
.detail-list li{border-top:var(--rule) solid var(--line);padding:1.2rem 0}
.detail-list dt,.detail-list .k{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:.4rem}
.detail-list a:hover{border-bottom:1px solid var(--ink)}

/* ---- footer -------------------------------------------------------------- */
.site-footer{background:var(--dark);color:rgba(247,243,236,.72);padding-block:clamp(3.5rem,7vw,6rem);margin-top:clamp(3rem,6vw,6rem)}
.site-footer a{color:rgba(247,243,236,.72)}
.site-footer a:hover{color:#F7F3EC}
.footer-grid{display:grid;gap:clamp(2rem,4vw,4rem)}
@media(min-width:820px){.footer-grid{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) minmax(0,1fr)}}
.site-footer img.mark{height:52px;width:auto;margin-bottom:1.4rem;opacity:.9}
.site-footer h4{font-size:.68rem;letter-spacing:.22em;text-transform:uppercase;color:rgba(247,243,236,.45);margin-bottom:1.1rem}
.site-footer ul{list-style:none;margin:0;padding:0;font-size:.92rem}
.site-footer li{margin-bottom:.55rem}
.site-footer .addr{font-size:.92rem;line-height:1.7;font-style:normal}
.site-footer .addr .cn{display:block;margin-top:.7rem;color:rgba(247,243,236,.55);font-size:.86rem}
.colophon{
  margin-top:clamp(2.5rem,5vw,4rem);padding-top:1.6rem;border-top:1px solid rgba(247,243,236,.16);
  display:flex;flex-wrap:wrap;gap:.8rem 1.6rem;font-size:.74rem;letter-spacing:.08em;color:rgba(247,243,236,.45);
}
.colophon .cn{font-size:.78rem}

/* ---- reveal -------------------------------------------------------------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}