/* ============================================================
   서초 루미니 상업시설 — STUDIO INDEX
   "Retail Directory" : 화이트 페이퍼 + 차콜 잉크 에디토리얼
   레이아웃: 필터 가능한 입점업종 masonry(Isotope) + 미니멀 화이트
   ============================================================ */

:root{
  --paper:#f6f4ef;        /* 종이 화이트(미세 웜) */
  --paper-2:#ffffff;
  --ink:#1a1a1a;          /* 차콜 잉크 */
  --ink-soft:#4a4845;
  --ink-faint:#8c8983;
  --rule:#d8d4cc;         /* 괘선 */
  --rule-strong:#1a1a1a;
  --accent:#b4471f;       /* 인주(印朱) — 도장 빨강, 절제된 한 점 */
  --accent-ink:#fff;
  --shadow:0 1px 0 var(--rule);
  --maxw:1280px;
  --gut:clamp(20px,5vw,72px);
  --serif:"Fraunces",Georgia,serif;
  --sans:"IBM Plex Sans KR","Helvetica Neue",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;}}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:300;
  line-height:1.6;
  letter-spacing:-.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}

/* ---- skip / focus ---- */
.skip{
  position:absolute;left:-999px;top:0;z-index:200;
  background:var(--ink);color:#fff;padding:10px 16px;font-family:var(--mono);font-size:13px;
}
.skip:focus{left:8px;top:8px;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;
}

/* ---- 사진 폴백→스왑 ---- */
.ph,.hero__media,.card__media{
  background-color:#e7e3db;
  background-image:linear-gradient(135deg,#ece8e0 0%,#ddd8cf 60%,#d2cdc3 100%);
  background-size:cover;background-position:center;background-repeat:no-repeat;
  transition:opacity .6s var(--ease);
}
.ph::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(45deg,transparent,transparent 11px,rgba(0,0,0,.018) 11px,rgba(0,0,0,.018) 12px);
  pointer-events:none;opacity:1;transition:opacity .6s var(--ease);
}
.has-img::after{opacity:0;}

/* ============================================================
   MASTHEAD
   ============================================================ */
.masthead{
  position:sticky;top:0;z-index:90;
  background:rgba(246,244,239,.86);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--rule);
}
.masthead__inner{
  max-width:var(--maxw);margin:0 auto;padding:14px var(--gut);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.masthead__logo{display:flex;flex-direction:column;line-height:1;}
.masthead__mark{font-family:var(--serif);font-weight:500;font-size:22px;letter-spacing:.14em;}
.masthead__sub{font-family:var(--mono);font-size:9.5px;letter-spacing:.34em;color:var(--ink-faint);margin-top:5px;}
.masthead__nav{display:flex;gap:clamp(14px,2vw,30px);}
.masthead__nav a{
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--ink-soft);
  padding:4px 0;position:relative;
}
.masthead__nav a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--ink);
  transition:width .35s var(--ease);
}
.masthead__nav a:hover::after,.masthead__nav a:focus-visible::after{width:100%;}
@media (max-width:760px){.masthead__nav{display:none;}}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:13px;letter-spacing:.03em;
  padding:14px 26px;border:1px solid var(--ink);cursor:pointer;
  transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
.btn--solid{background:var(--ink);color:var(--paper);}
.btn--solid:hover{background:var(--accent);border-color:var(--accent);transform:translateY(-2px);}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;min-height:92vh;display:flex;flex-direction:column;justify-content:flex-end;
  overflow:hidden;color:#fff;padding:0 var(--gut) clamp(34px,6vw,72px);
}
.hero__media{position:absolute;inset:0;z-index:0;}
.hero__scrim{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(15,14,13,.30) 0%,rgba(15,14,13,.12) 38%,rgba(15,14,13,.72) 100%);
}
.hero__grid{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;width:100%;}
.hero__index{
  font-family:var(--mono);font-size:12px;letter-spacing:.28em;text-transform:uppercase;
  margin:0 0 18px;color:rgba(255,255,255,.82);
  padding-left:14px;border-left:2px solid var(--accent);
}
.hero__title{
  font-family:var(--serif);font-weight:300;
  font-size:clamp(46px,9vw,128px);line-height:.94;letter-spacing:-.02em;
  margin:0 0 28px;text-wrap:balance;
}
.hero__title em{font-style:italic;font-weight:400;}
.hero__facts{
  list-style:none;margin:0 0 24px;padding:0;
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;max-width:760px;
  border-top:1px solid rgba(255,255,255,.32);
}
.hero__facts li{padding:14px 18px 14px 0;border-right:1px solid rgba(255,255,255,.18);}
.hero__facts li:last-child{border-right:0;}
.hero__facts .lbl{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.22em;color:rgba(255,255,255,.62);margin-bottom:6px;}
.hero__facts .val{display:block;font-size:14px;font-weight:400;line-height:1.4;}
.hero__line{font-family:var(--serif);font-style:italic;font-size:clamp(16px,2.4vw,21px);margin:0 0 26px;max-width:560px;color:rgba(255,255,255,.94);}
.hero__foot{
  position:absolute;left:var(--gut);right:var(--gut);bottom:14px;z-index:2;
  display:flex;justify-content:space-between;
  font-family:var(--mono);font-size:10px;letter-spacing:.24em;color:rgba(255,255,255,.6);
}
@media (max-width:620px){
  .hero__facts{grid-template-columns:1fr;}
  .hero__facts li{border-right:0;border-bottom:1px solid rgba(255,255,255,.16);}
  .hero__foot{display:none;}
}

/* ============================================================
   BLOCK 공통
   ============================================================ */
.block{max-width:var(--maxw);margin:0 auto;padding:clamp(64px,9vw,128px) var(--gut);}
.block + .block{border-top:1px solid var(--rule);}
.block__head{margin-bottom:clamp(32px,5vw,56px);max-width:920px;}
.kicker{
  display:inline-block;font-family:var(--mono);font-size:11.5px;letter-spacing:.22em;
  color:var(--accent);margin-bottom:18px;text-transform:uppercase;
}
.block__title{
  font-family:var(--serif);font-weight:300;
  font-size:clamp(28px,5vw,58px);line-height:1.04;letter-spacing:-.02em;margin:0;text-wrap:balance;
}
.block__note{margin:20px 0 0;font-size:14px;color:var(--ink-soft);max-width:560px;}
.block__note a{border-bottom:1px solid var(--accent);color:var(--ink);}

/* ---- OVERVIEW ---- */
.overview__body{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(32px,5vw,72px);align-items:start;}
.lede{font-family:var(--serif);font-size:clamp(19px,2.6vw,27px);line-height:1.46;font-weight:300;margin:0;}
.lede strong{font-weight:500;font-style:italic;}
.specsheet{margin:0;display:grid;grid-template-columns:1fr;border-top:1px solid var(--rule-strong);}
.specsheet > div{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:13px 0;border-bottom:1px solid var(--rule);}
.specsheet dt{margin:0;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--ink-faint);text-transform:uppercase;padding-top:2px;}
.specsheet dd{margin:0;font-size:15px;font-weight:400;}
@media (max-width:780px){.overview__body{grid-template-columns:1fr;}}

/* ---- LOCATION ---- */
.location__split{display:grid;grid-template-columns:0.85fr 1.15fr;gap:clamp(28px,4vw,64px);align-items:start;}
.location__fig{margin:0;position:relative;}
.location__fig .ph{position:relative;aspect-ratio:3/4;}
.location__fig figcaption,.location__strip figcaption,.invest__fig figcaption{
  font-family:var(--mono);font-size:11px;letter-spacing:.05em;color:var(--ink-faint);margin-top:10px;
}
.location__notes > p{font-size:16px;line-height:1.72;margin:0 0 28px;max-width:560px;color:var(--ink-soft);}
.ledger{list-style:none;margin:0 0 32px;padding:0;}
.ledger li{display:grid;grid-template-columns:48px 1fr;gap:14px;align-items:baseline;padding:14px 0;border-bottom:1px solid var(--rule);}
.ledger li:first-child{border-top:1px solid var(--rule-strong);}
.ledger__n{font-family:var(--mono);font-size:13px;color:var(--accent);}
.ledger__t{font-size:15px;font-weight:400;}
.location__strip{margin:0;}
.location__strip .ph{position:relative;aspect-ratio:16/7;}
@media (max-width:820px){.location__split{grid-template-columns:1fr;}.location__fig .ph{aspect-ratio:16/10;}}

/* ============================================================
   DIRECTORY — Isotope filterable masonry
   ============================================================ */
.filterbar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px;}
.filterbar__btn{
  font-family:var(--mono);font-size:12px;letter-spacing:.02em;color:var(--ink-soft);
  background:transparent;border:1px solid var(--rule);padding:9px 18px;cursor:pointer;
  transition:all .28s var(--ease);
}
.filterbar__btn:hover{border-color:var(--ink);color:var(--ink);}
.filterbar__btn.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink);}

/* Isotope grid */
.grid{margin:0 -10px;}
.grid__sizer,.card{width:calc(33.333% - 20px);margin:0 10px 20px;}
.card{
  background:var(--paper-2);border:1px solid var(--rule);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
  float:left; /* isotope */
}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(0,0,0,.34);border-color:var(--ink);}
.card--floor{width:calc(50% - 20px);}
.card__media{position:relative;aspect-ratio:16/10;}
.card__pad{padding:22px 22px 24px;}
.card__pad--tile{padding:24px 22px 26px;}
.card__floor{
  display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.12em;
  color:var(--accent);border:1px solid var(--accent);padding:2px 8px;margin-bottom:14px;
}
.card__h{font-family:var(--serif);font-weight:400;font-size:clamp(18px,2.2vw,24px);line-height:1.15;margin:0 0 9px;}
.card__p{font-size:13.5px;line-height:1.6;color:var(--ink-soft);margin:0 0 14px;}
.tag{font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--ink-faint);text-transform:uppercase;}
.card--quote{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.card--quote .card__quote{font-family:var(--serif);font-style:italic;font-size:clamp(17px,2.2vw,22px);line-height:1.4;margin:0;}
.card--quote:hover{transform:translateY(-4px);box-shadow:0 18px 40px -22px rgba(0,0,0,.5);}

@media (max-width:920px){
  .grid__sizer,.card{width:calc(50% - 20px);}
  .card--floor{width:calc(100% - 20px);}
}
@media (max-width:560px){
  .grid{margin:0 -7px;}
  .grid__sizer,.card,.card--floor{width:calc(100% - 14px);margin:0 7px 14px;}
}

/* ============================================================
   INVEST
   ============================================================ */
.invest__list{list-style:none;margin:0 0 clamp(40px,6vw,72px);padding:0;
  display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--rule-strong);}
.invest__item{padding:30px 32px 34px 0;border-bottom:1px solid var(--rule);position:relative;}
.invest__item:nth-child(odd){border-right:1px solid var(--rule);padding-right:32px;}
.invest__item:nth-child(even){padding-left:32px;}
.invest__n{font-family:var(--mono);font-size:13px;color:var(--accent);display:block;margin-bottom:16px;}
.invest__item h3{font-family:var(--serif);font-weight:400;font-size:clamp(20px,2.6vw,28px);margin:0 0 12px;line-height:1.1;}
.invest__item p{font-size:14.5px;line-height:1.66;color:var(--ink-soft);margin:0;max-width:46ch;}
.invest__fig{margin:0;}
.invest__fig .ph{position:relative;aspect-ratio:21/8;}
@media (max-width:720px){
  .invest__list{grid-template-columns:1fr;}
  .invest__item,.invest__item:nth-child(odd){border-right:0;padding:26px 0 28px;}
  .invest__item:nth-child(even){padding-left:0;}
  .invest__fig .ph{aspect-ratio:16/10;}
}

/* ============================================================
   REGISTER
   ============================================================ */
.register{max-width:none;padding:0;}
.register__inner{
  max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:1fr 1fr;align-items:stretch;
}
.register__fig{margin:0;position:relative;min-height:520px;}
.register__fig .ph{position:absolute;inset:0;}
.register__form-wrap{padding:clamp(48px,7vw,96px) var(--gut);}
.register__form-wrap .block__title{font-size:clamp(26px,4vw,46px);}
.register__lede{font-size:15px;line-height:1.7;color:var(--ink-soft);margin:20px 0 34px;max-width:46ch;}
.form{max-width:480px;}
.form__row{margin-bottom:18px;}
.form__row label{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--ink-faint);text-transform:uppercase;margin-bottom:8px;}
.form input,.form select{
  width:100%;padding:13px 14px;font-family:var(--sans);font-size:15px;color:var(--ink);
  background:var(--paper-2);border:1px solid var(--rule);transition:border-color .25s var(--ease);
}
.form input:focus,.form select:focus{border-color:var(--ink);}
.form__check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-soft);margin:6px 0 24px;line-height:1.5;}
.form__check input{width:auto;margin-top:3px;accent-color:var(--accent);}
.form__submit{width:100%;justify-content:center;}
.form__msg{font-family:var(--mono);font-size:13px;margin:16px 0 0;min-height:20px;}
.form__msg.is-ok{color:var(--accent);}
.form__msg.is-err{color:#9a2b2b;}
@media (max-width:840px){
  .register__inner{grid-template-columns:1fr;}
  .register__fig{min-height:280px;order:-1;}
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{background:var(--ink);color:var(--paper);padding:clamp(48px,7vw,84px) var(--gut) 40px;}
.footer__top{max-width:var(--maxw);margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;gap:32px;align-items:flex-start;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.16);}
.footer__brand .masthead__mark{color:var(--paper);}
.footer__brand .masthead__sub{color:rgba(255,255,255,.5);}
.footer__facts{display:grid;grid-template-columns:repeat(2,auto);gap:14px 48px;margin:0;}
.footer__facts dt{font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:rgba(255,255,255,.45);text-transform:uppercase;margin-bottom:5px;}
.footer__facts dd{margin:0;font-size:14px;}
.footer__facts a{border-bottom:1px solid var(--accent);}
.footer__disc{max-width:var(--maxw);margin:28px auto 0;font-size:12px;line-height:1.65;color:rgba(255,255,255,.52);}
.footer__credit{max-width:var(--maxw);margin:16px auto 0;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:rgba(255,255,255,.38);}

/* ============================================================
   STICKY CTA
   ============================================================ */
.sticky-cta{
  position:fixed;right:20px;bottom:20px;z-index:95;
  display:inline-flex;align-items:center;gap:10px;
  background:var(--ink);color:var(--paper);
  font-family:var(--mono);font-size:13px;letter-spacing:.03em;
  padding:14px 22px;box-shadow:0 14px 34px -14px rgba(0,0,0,.5);
  transition:background .3s var(--ease),transform .3s var(--ease);
}
.sticky-cta:hover{background:var(--accent);transform:translateY(-3px);}
.sticky-cta__dot{width:7px;height:7px;border-radius:50%;background:var(--accent);}
.sticky-cta:hover .sticky-cta__dot{background:#fff;}
@media (max-width:560px){
  .sticky-cta{left:16px;right:16px;bottom:16px;justify-content:center;}
}

/* ============================================================
   리빌 모션 (desktop only, reduced-motion 존중)
   ============================================================ */
@media (min-width:861px) and (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
  .reveal.in{opacity:1;transform:none;}
}

/* PLOT-KO-WRAP: 한글 어절 단위 줄바꿈 + 오버플로 방지 (어떤 폭에서도 자연스럽게) */
:where(html){word-break:keep-all;overflow-wrap:break-word}

/* 예시 평면/배치도(원본 도면 부재 시 대체) · 테마무관 */
.ex-plan{--plan-accent:currentColor;margin:30px auto 4px}
.ex-plan>svg{display:block;width:100%;max-width:720px;margin:0 auto;background:color-mix(in srgb,currentColor 5%,transparent);border:1px solid color-mix(in srgb,currentColor 20%,transparent);border-radius:16px;padding:14px}
.ex-plan--wide>svg{max-width:880px}
.ex-plan--sec{padding:clamp(48px,8vw,90px) clamp(18px,5vw,40px)}
.ex-plan__h{max-width:880px;margin:0 auto 20px;text-align:center;font-size:clamp(1.3rem,2.6vw,1.9rem);font-weight:700;letter-spacing:-.01em}
.ex-plan__why{max-width:760px;margin:16px auto 0;text-align:center;font-size:.94rem;opacity:.85;line-height:1.65}
.ex-plan__cap{max-width:880px;margin:8px auto 0;text-align:center;font-size:.8rem;opacity:.6}
.ex-plan__cap b,.ex-plan__why b{font-weight:700}