/* 인하대역 수자인 로이센트 — roicent.css
 * 디자인: 볼드 수직 랜드마크 / 건메탈 그래파이트 + 웜 앰버 골드
 * 도심 마천루 중후 · 모바일 퍼스트
 */

:root {
  --graphite: #1c1f24;
  --graphite-2: #24282f;
  --steel: #343a43;
  --steel-line: #424954;
  --ink: #0f1115;
  --amber: #e0a64e;
  --amber-2: #f2c879;
  --amber-deep: #b9842f;
  --paper: #f6f3ec;
  --paper-dim: #cdc8bd;
  --muted: #8b9099;
  --white: #fbfaf7;

  --ff: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Segoe UI", system-ui, sans-serif;
  --maxw: 1200px;
  --gutter: clamp(1.1rem, 4vw, 3rem);
  --r: 4px;
  --shadow: 0 24px 60px -28px rgba(0, 0, 0, .7);

  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  font-family: var(--ff);
  color: var(--paper);
  background: var(--graphite);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
:focus-visible {
  outline: 2px solid var(--amber-2);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- 진행바 ---------- */
.scrollbar {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 120;
  background: transparent; pointer-events: none;
}
.scrollbar__fill {
  height: 100%; transform-origin: 0 50%; transform: scaleX(0);
  background: linear-gradient(90deg, var(--amber-deep), var(--amber-2));
}

/* ---------- 내비 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 110;
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem var(--gutter);
  transition: background .4s var(--ease), backdrop-filter .4s var(--ease), padding .4s var(--ease);
}
.nav.is-stuck {
  background: rgba(20, 22, 27, .82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  padding-top: .65rem; padding-bottom: .65rem;
}
.nav__brand { display: flex; align-items: baseline; gap: .55rem; letter-spacing: .02em; }
.nav__brand b { font-weight: 800; font-size: 1.02rem; color: var(--white); }
.nav__brand span { font-size: .68rem; color: var(--amber); letter-spacing: .28em; text-transform: uppercase; }
.nav__links { display: flex; align-items: center; gap: 1.6rem; }
.nav__links a {
  font-size: .82rem; color: var(--paper-dim); letter-spacing: .04em;
  position: relative; padding: .2rem 0;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 1px; width: 0;
  background: var(--amber-2); transition: width .3s var(--ease);
}
.nav__links a:hover { color: var(--white); }
.nav__links a:hover::after { width: 100%; }
.nav__cta {
  font-size: .8rem; padding: .5rem 1rem; border: 1px solid var(--amber);
  color: var(--amber-2) !important; border-radius: var(--r); letter-spacing: .04em;
}
.nav__cta:hover { background: var(--amber); color: var(--ink) !important; }
.nav__cta::after { display: none; }
.nav__burger {
  display: none; width: 42px; height: 42px; background: none;
  border: 1px solid rgba(255,255,255,.18); border-radius: var(--r); cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav__burger span { display: block; width: 18px; height: 2px; background: var(--paper); transition: .3s; }

/* ---------- 히어로 ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  padding: 7rem var(--gutter) 3rem;
  overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0; z-index: 0;
  background: var(--ink) center/cover no-repeat;
  opacity: 0; transition: opacity 1.2s var(--ease);
}
.hero__bg.has-img { opacity: .42; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background:
    radial-gradient(120% 80% at 80% 10%, rgba(224,166,78,.16), transparent 55%),
    linear-gradient(180deg, rgba(18,20,24,.55), rgba(18,20,24,.92) 78%),
    linear-gradient(90deg, rgba(18,20,24,.92) 30%, transparent 90%);
}
.hero__grid {
  position: relative; z-index: 2; width: 100%; max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 2rem; align-items: center;
}
.hero__copy { max-width: 560px; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: .6rem;
  font-size: .72rem; letter-spacing: .26em; text-transform: uppercase;
  color: var(--amber); margin-bottom: 1.4rem;
}
.hero__eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--amber); }
.hero h1 {
  font-size: clamp(2.5rem, 8vw, 5.2rem);
  line-height: .98; font-weight: 800; letter-spacing: -.02em;
  margin: 0 0 1.3rem; color: var(--white);
}
.hero h1 .accent {
  display: block;
  background: linear-gradient(100deg, var(--amber-2), var(--amber-deep));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lead { font-size: clamp(1rem, 2.4vw, 1.18rem); color: var(--paper-dim); max-width: 42ch; margin: 0 0 2rem; }

/* 히어로 3요소 */
.hero__facts { display: flex; flex-wrap: wrap; gap: 1.8rem; margin-bottom: 2.2rem; }
.hero__fact b { display: block; font-size: 1.7rem; font-weight: 800; color: var(--white); line-height: 1.1; }
.hero__fact span { font-size: .76rem; letter-spacing: .1em; color: var(--muted); text-transform: uppercase; }

.hero__actions { display: flex; flex-wrap: wrap; gap: .9rem; }

/* 캔버스 컬럼 */
.hero__stage {
  position: relative; align-self: stretch; min-height: 60svh;
  display: flex; align-items: center; justify-content: center;
}
.tower-canvas {
  width: 100%; height: clamp(360px, 56svh, 560px);
  cursor: grab; touch-action: pan-y;
}
.tower-canvas:active { cursor: grabbing; }
.hero__stagehint {
  position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  font-size: .68rem; letter-spacing: .16em; color: var(--muted); text-transform: uppercase;
}

/* ---------- 버튼 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  font-size: .92rem; font-weight: 600; letter-spacing: .02em;
  padding: .92rem 1.7rem; border-radius: var(--r); cursor: pointer;
  border: 1px solid transparent; transition: .25s var(--ease);
}
.btn--gold { background: linear-gradient(100deg, var(--amber), var(--amber-deep)); color: var(--ink); }
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -12px rgba(224,166,78,.6); }
.btn--ghost { border-color: rgba(255,255,255,.26); color: var(--paper); }
.btn--ghost:hover { border-color: var(--amber); color: var(--amber-2); }
.btn--block { width: 100%; justify-content: center; }

/* ---------- 섹션 공통 ---------- */
.section { padding: clamp(4.5rem, 11vw, 8rem) 0; position: relative; }
.section--paper { background: var(--paper); color: var(--ink); }
.section--paper .muted { color: #5b5e64; }
.section--steel { background: linear-gradient(180deg, var(--graphite), var(--graphite-2)); }

.sec-head { max-width: 640px; margin-bottom: 3rem; }
.sec-tag {
  font-size: .72rem; letter-spacing: .26em; text-transform: uppercase;
  color: var(--amber-deep); display: inline-flex; align-items: center; gap: .55rem; margin-bottom: 1rem;
}
.section:not(.section--paper) .sec-tag { color: var(--amber); }
.sec-tag::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.sec-head h2 {
  font-size: clamp(1.9rem, 5.2vw, 3.2rem); font-weight: 800; line-height: 1.05;
  letter-spacing: -.02em; margin: 0 0 .9rem;
}
.sec-head p { font-size: 1.02rem; color: var(--muted); margin: 0; }
.section--paper .sec-head p { color: #5b5e64; }

/* ---------- reveal ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: .08s; }
[data-reveal][data-delay="2"] { transition-delay: .16s; }
[data-reveal][data-delay="3"] { transition-delay: .24s; }

/* ---------- 개요 카운터 ---------- */
.overview-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem;
  border-top: 1px solid var(--steel-line); padding-top: 2.4rem;
}
.section--paper .overview-grid { border-color: #d8d2c5; }
.stat b { display: block; font-size: clamp(2.2rem, 6vw, 3.4rem); font-weight: 800; line-height: 1; letter-spacing: -.02em; }
.stat .unit { font-size: 1.1rem; color: var(--amber-deep); font-weight: 700; }
.stat span.lbl { font-size: .8rem; letter-spacing: .08em; color: var(--muted); margin-top: .5rem; display: block; }
.section--paper .stat .unit { color: var(--amber-deep); }

/* ---------- 입지 ---------- */
.loc { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(1.5rem, 4vw, 3.2rem); align-items: center; }
.loc__media {
  position: relative; aspect-ratio: 4/5; border-radius: var(--r); overflow: hidden;
  background: var(--ink) center/cover no-repeat; opacity: 0; transition: opacity 1s var(--ease);
  box-shadow: var(--shadow);
}
.loc__media.has-img { opacity: 1; }
.loc__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(160deg, transparent 50%, rgba(224,166,78,.12)); }
.loc__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.1rem; }
.loc__list li {
  display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: start;
  padding-bottom: 1.1rem; border-bottom: 1px solid var(--steel-line);
}
.section--paper .loc__list li { border-color: #d8d2c5; }
.loc__num { font-size: .76rem; font-weight: 800; color: var(--amber); letter-spacing: .1em; padding-top: .25rem; }
.section--paper .loc__num { color: var(--amber-deep); }
.loc__list b { display: block; font-size: 1.06rem; margin-bottom: .2rem; }
.loc__list p { margin: 0; font-size: .92rem; color: var(--muted); }

/* ---------- 단지/평면 ---------- */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.4rem; }
.plan {
  position: relative; border: 1px solid var(--steel-line); border-radius: var(--r);
  padding: 1.8rem; background: rgba(255,255,255,.02);
  transition: transform .35s var(--ease), border-color .35s var(--ease), background .35s var(--ease);
  overflow: hidden;
}
.plan::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(var(--amber-2), var(--amber-deep)); transform: scaleY(0); transform-origin: top; transition: transform .4s var(--ease);
}
.plan:hover { transform: translateY(-6px); border-color: var(--amber-deep); background: rgba(224,166,78,.05); }
.plan:hover::before { transform: scaleY(1); }
.plan__type { font-size: .74rem; letter-spacing: .2em; color: var(--amber); text-transform: uppercase; }
.plan__area { font-size: 2.2rem; font-weight: 800; margin: .5rem 0 .1rem; line-height: 1; }
.plan__area small { font-size: 1rem; font-weight: 600; color: var(--muted); }
.plan__units { font-size: .85rem; color: var(--paper-dim); margin-bottom: 1rem; }
.plan__feat { list-style: none; margin: 0; padding: 0; font-size: .88rem; color: var(--muted); display: grid; gap: .4rem; }
.plan__feat li { padding-left: 1.1rem; position: relative; }
.plan__feat li::before { content: "—"; position: absolute; left: 0; color: var(--amber-deep); }

/* 특화 칩 */
.feature-chips { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 2.6rem; }
.chip {
  font-size: .82rem; padding: .55rem 1rem; border: 1px solid var(--steel-line);
  border-radius: 100px; color: var(--paper-dim); letter-spacing: .02em;
}
.chip b { color: var(--amber-2); font-weight: 700; }

/* ---------- 일정 ---------- */
.timeline { position: relative; margin-top: 2rem; display: grid; gap: 0; }
.timeline::before { content: ""; position: absolute; left: 11px; top: 8px; bottom: 8px; width: 1px; background: var(--steel-line); }
.tl {
  position: relative; padding: 0 0 2.2rem 2.6rem;
}
.tl:last-child { padding-bottom: 0; }
.tl::before {
  content: ""; position: absolute; left: 5px; top: 4px; width: 13px; height: 13px;
  border-radius: 50%; background: var(--graphite); border: 2px solid var(--steel-line);
}
.tl.is-now::before { background: var(--amber); border-color: var(--amber); box-shadow: 0 0 0 5px rgba(224,166,78,.2); }
.tl__when { font-size: .76rem; letter-spacing: .14em; color: var(--amber); text-transform: uppercase; }
.tl__what { font-size: 1.12rem; font-weight: 700; margin: .2rem 0 .25rem; }
.tl__note { font-size: .88rem; color: var(--muted); margin: 0; }

/* ---------- 등록 ---------- */
.section--register { background: linear-gradient(160deg, var(--graphite-2), var(--ink)); }
.reg { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.6rem, 5vw, 4rem); align-items: center; }
.reg__copy h2 { font-size: clamp(2rem, 5.5vw, 3.4rem); font-weight: 800; line-height: 1.02; letter-spacing: -.02em; margin: 0 0 1.1rem; }
.reg__copy p { color: var(--paper-dim); margin: 0 0 1.6rem; max-width: 40ch; }
.reg__contact { display: grid; gap: .6rem; font-size: .92rem; color: var(--muted); }
.reg__contact b { color: var(--amber-2); }

.regcard {
  background: rgba(255,255,255,.03); border: 1px solid var(--steel-line);
  border-radius: 8px; padding: clamp(1.5rem, 4vw, 2.4rem); box-shadow: var(--shadow);
  transition: opacity .4s;
}
.regcard.done { opacity: .96; }
.regcard h3 { margin: 0 0 .3rem; font-size: 1.2rem; }
.regcard > p { margin: 0 0 1.6rem; font-size: .86rem; color: var(--muted); }
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-size: .8rem; letter-spacing: .04em; color: var(--paper-dim); margin-bottom: .45rem; }
.field label .req { color: var(--amber); }
.field input[type="text"], .field input[type="tel"], .field select {
  width: 100%; padding: .82rem .9rem; background: rgba(0,0,0,.25);
  border: 1px solid var(--steel-line); border-radius: var(--r); color: var(--white);
  font-family: inherit; font-size: .94rem; transition: border-color .25s;
}
.field input:focus, .field select:focus { border-color: var(--amber); outline: none; }
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--amber) 50%), linear-gradient(135deg, var(--amber) 50%, transparent 50%); background-position: calc(100% - 18px) 19px, calc(100% - 13px) 19px; background-size: 5px 5px; background-repeat: no-repeat; }
.field.err input, .field.err select { border-color: #e0604e; }
.field--check { display: flex; gap: .7rem; align-items: flex-start; }
.field--check input { margin-top: .25rem; accent-color: var(--amber); width: 18px; height: 18px; flex: none; }
.field--check label { margin: 0; font-size: .82rem; color: var(--muted); }
.field--check label a { color: var(--amber-2); text-decoration: underline; }
.field.err .checkmsg { color: #e0604e; }
.form__status { min-height: 1.2rem; font-size: .85rem; margin: .4rem 0 1rem; }
.form__status.is-ok { color: var(--amber-2); }
.form__status.is-err { color: #e0604e; }

/* ---------- 푸터 ---------- */
.footer { background: var(--ink); padding: 3.4rem 0 2.4rem; border-top: 1px solid rgba(255,255,255,.06); }
.footer__top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.4rem; align-items: baseline; margin-bottom: 2rem; }
.footer__brand b { font-size: 1.1rem; color: var(--white); }
.footer__brand span { display: block; font-size: .72rem; color: var(--amber); letter-spacing: .22em; text-transform: uppercase; margin-top: .3rem; }
.footer__meta { font-size: .82rem; color: var(--muted); display: grid; gap: .35rem; text-align: right; }
.disclaimer {
  font-size: .76rem; line-height: 1.75; color: #6c7079;
  border-top: 1px solid rgba(255,255,255,.06); padding-top: 1.6rem;
}
.disclaimer strong { color: var(--paper-dim); }
.footer__copy { margin-top: 1.4rem; font-size: .74rem; color: #585c63; }

/* ---------- 반응형 ---------- */
@media (max-width: 940px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__stage { order: -1; min-height: 42svh; }
  .tower-canvas { height: clamp(300px, 42svh, 420px); }
  .loc { grid-template-columns: 1fr; }
  .loc__media { aspect-ratio: 16/10; max-height: 340px; }
  .reg { grid-template-columns: 1fr; }
  .overview-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav__links {
    position: fixed; inset: 0 0 0 auto; width: min(82vw, 320px);
    flex-direction: column; align-items: flex-start; justify-content: center; gap: 1.6rem;
    background: rgba(16,18,22,.97); backdrop-filter: blur(16px);
    padding: 2rem; transform: translateX(100%); transition: transform .4s var(--ease);
    border-left: 1px solid rgba(255,255,255,.08);
  }
  .nav__links.is-open { transform: none; }
  .nav__links a { font-size: 1.1rem; }
  .nav__burger { display: flex; z-index: 130; }
  .hero__facts { gap: 1.2rem; }
  .hero__fact b { font-size: 1.4rem; }
}
@media (max-width: 460px) {
  .overview-grid { grid-template-columns: 1fr; gap: 1rem; }
  .hero__actions { width: 100%; }
  .hero__actions .btn { flex: 1; }
}

/* 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:13px auto 0;text-align:center;font-size:.8rem;opacity:.62}
.ex-plan__cap b,.ex-plan__why b{font-weight:700}