/* ENR-LP-016 SIKAT SOLAR
   문법 — 콘크리트 회백 바탕 · 패널 블루블랙 잉크 · 전기 코발트 한 점.
   기존 작품들이 전부 "둥근 카드"라서 여기는 각을 살리고 헤어라인 규격표로 간다.
   숫자가 화면을 지배한다. Archivo 를 넓게/좁게 눌러 쓴다. */

:root {
  --brand:     #0D1B2A;
  --brand-ink: #FFFFFF;
  --accent:    #2457D6;
  --surface:   #E6E4DF;
  --ink:       #0D1B2A;

  --surface-alt: #F2F1ED;
  --ink-2: #44505E;
  --ink-3: #78828E;
  --line:        rgba(13, 27, 42, .16);
  --line-strong: rgba(13, 27, 42, .38);

  /* 각을 죽인다 */
  --r-sm: 0; --r-md: 0; --r-lg: 0;

  --container: 600px;
  --cta-h: 62px;

  --font-disp: "Archivo", "Pretendard Variable", system-ui, sans-serif;
  --topbar-h: 52px;
  --tick-h: 30px;
}

body { background: var(--surface); }

.num { font-family: var(--font-disp); font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1; }

/* ============ 상단 바 ============ */
.topbar {
  position: sticky; top: 0; z-index: 40;
  height: var(--topbar-h);
  background: var(--brand); color: var(--brand-ink);
}
.topbar__in {
  max-width: var(--container); margin-inline: auto;
  padding-inline: var(--gutter);
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.mark { display: flex; align-items: center; gap: 9px; }
.mark__sun {
  width: 13px; height: 13px; flex: none; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(36, 87, 214, .28);
}
.mark__wd {
  font-family: var(--font-disp);
  font-variation-settings: "wdth" 88, "wght" 800;
  font-size: 15px; letter-spacing: .1em;
}
.mark__wd em { font-style: normal; font-variation-settings: "wdth" 88, "wght" 400; opacity: .72; }

.lang { display: flex; gap: 1px; background: rgba(255, 255, 255, .22); }
.lang button {
  min-width: 34px; padding: 5px 0;
  font-family: var(--font-disp); font-size: 11px; font-variation-settings: "wght" 600;
  letter-spacing: .08em;
  background: var(--brand); color: rgba(255, 255, 255, .58);
}
.lang button.on { background: var(--accent); color: #fff; }

/* ============ 티커 — 움직임 1 ============ */
.ticker {
  height: var(--tick-h); overflow: hidden;
  background: var(--brand); color: rgba(255, 255, 255, .62);
  border-top: 1px solid rgba(255, 255, 255, .14);
  display: flex; align-items: center;
}
.ticker__track {
  display: flex; flex: none; white-space: nowrap;
  animation: tick 46s linear infinite;
}
.ticker__it {
  padding-inline: 18px;
  font-size: 11px; letter-spacing: .06em;
  border-right: 1px solid rgba(255, 255, 255, .16);
}
.ticker__it b { font-variation-settings: "wght" 700; color: #fff; }
.ticker__it i { font-style: normal; color: var(--accent); filter: brightness(1.7); }
@keyframes tick { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .ticker__track { animation: none; } }

/* ============ 히어로 — 움직임 2 ============ */
.hero {
  position: relative; isolation: isolate;
  padding-block: clamp(72px, 16vw, 132px) clamp(40px, 8vw, 64px);
  color: var(--brand-ink);
  background: var(--brand);
  overflow: hidden;
}
.hero__cuts { position: absolute; inset: 0; z-index: -2; }
.hero__cut {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0; transition: opacity 1.6s ease;
  transform: scale(1.06);
}
.hero__cut.on { opacity: 1; }
.hero__scrim {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(13, 27, 42, .50) 0%, rgba(13, 27, 42, .60) 38%, rgba(13, 27, 42, .80) 72%, rgba(13, 27, 42, .95) 100%);
}
.kicker {
  font-family: var(--font-disp); font-size: 10.5px;
  font-variation-settings: "wght" 600; letter-spacing: .18em; text-transform: uppercase;
  color: var(--accent); filter: brightness(1.9);
  padding-bottom: 14px; margin-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, .22);
}
.hero__title {
  font-family: var(--font-disp);
  font-size: clamp(1.9rem, 7.5vw, 3.1rem);
  font-variation-settings: "wdth" 90, "wght" 700;
  line-height: 1.07; letter-spacing: -.018em;
}
.hero__lead { margin-top: 20px; font-size: var(--fs-base); color: rgba(255, 255, 255, .76); max-width: 34em; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding-inline: 26px; margin-top: 26px;
  font-family: var(--font-disp); font-size: 14px;
  font-variation-settings: "wght" 700; letter-spacing: .02em;
}
.btn--solid { background: var(--accent); color: #fff; }
.btn--line  { border: 1px solid var(--line-strong); color: var(--ink); }

.hero__spec {
  margin-top: 40px; padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, .22);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
.hero__spec dt { font-size: 10.5px; letter-spacing: .07em; color: rgba(255, 255, 255, .54); }
.hero__spec dd {
  margin: 5px 0 0; font-size: 1.45rem;
  font-variation-settings: "wdth" 84, "wght" 700; letter-spacing: -.02em; line-height: 1;
}
.hero__spec small { font-size: .46em; font-variation-settings: "wght" 500; margin-left: 3px; opacity: .7; }

/* ============ 섹션 공통 ============ */
.band { padding-block: clamp(56px, 11vw, 92px); }
.band + .band { border-top: 1px solid var(--line); }
.eyebrow {
  display: flex; align-items: baseline; gap: 12px;
  font-family: var(--font-disp); font-size: 10.5px;
  font-variation-settings: "wght" 600; letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 18px;
}
.eyebrow .ix {
  font-variation-settings: "wght" 800; color: var(--accent);
  padding-right: 12px; border-right: 1px solid var(--line-strong);
}
.ttl {
  font-family: var(--font-disp);
  font-size: clamp(1.55rem, 6vw, 2.1rem);
  font-variation-settings: "wdth" 94, "wght" 700;
  line-height: 1.12; letter-spacing: -.022em;
}
.sub { margin-top: 12px; color: var(--ink-2); }

/* ============ 01 계산기 — 이 작품의 주인공 ============ */
.band--calc { background: var(--surface-alt); }
.calc { margin-top: 30px; }

.seg { display: flex; gap: 1px; background: var(--line-strong); margin-bottom: 30px; }
.seg button {
  flex: 1; padding: 11px 0;
  font-family: var(--font-disp); font-size: 12.5px;
  font-variation-settings: "wght" 600; letter-spacing: .06em;
  background: var(--surface-alt); color: var(--ink-3);
}
.seg button.on { background: var(--brand); color: #fff; }

.calc__lab { display: block; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
.calc__bill {
  display: block; margin-top: 4px;
  font-size: 1.85rem; font-variation-settings: "wdth" 84, "wght" 700;
  letter-spacing: -.02em; line-height: 1.1;
}

.calc__range {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 34px; margin-top: 10px; background: none; cursor: pointer;
}
.calc__range::-webkit-slider-runnable-track {
  height: 3px;
  background: linear-gradient(90deg, var(--accent) var(--fill, 8%), var(--line-strong) var(--fill, 8%));
}
.calc__range::-moz-range-track { height: 3px; background: var(--line-strong); }
.calc__range::-moz-range-progress { height: 3px; background: var(--accent); }
.calc__range::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 22px; height: 22px; margin-top: -9.5px;
  background: var(--brand); border: 4px solid var(--accent); border-radius: 50%;
}
.calc__range::-moz-range-thumb {
  width: 22px; height: 22px; border: 4px solid var(--accent); border-radius: 50%;
  background: var(--brand);
}
.calc__ends { display: flex; justify-content: space-between; font-size: 10.5px; color: var(--ink-3); }

.calc__out {
  margin-top: 26px; padding: 22px 20px 20px;
  background: var(--brand); color: var(--brand-ink);
}
.calc__cap { font-size: 10.5px; letter-spacing: .16em; text-transform: uppercase; color: rgba(255, 255, 255, .56); }
.calc__big {
  margin-top: 6px;
  font-size: clamp(2.7rem, 13vw, 4.1rem);
  font-variation-settings: "wdth" 76, "wght" 800;
  letter-spacing: -.035em; line-height: .96;
  color: #fff;
}

/* 헤어라인 규격표 — 둥근 카드를 쓰지 않는 이유가 여기 */
.spec { margin-top: 2px; border-top: 1px solid var(--line-strong); }
.spec__row {
  display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  padding-block: 12px; border-bottom: 1px solid var(--line);
}
.spec__row dt { font-size: var(--fs-sm); color: var(--ink-2); }
.spec__row dd {
  margin: 0; font-size: 1.05rem;
  font-variation-settings: "wdth" 88, "wght" 700; letter-spacing: -.01em;
}
.spec__row--sum { border-bottom: 2px solid var(--brand); }
.spec__row--sum dt { color: var(--ink); font-weight: 600; }
.spec__row--sum dd { color: var(--accent); font-size: 1.25rem; }

.calc__note { margin-top: 16px; font-size: 11.5px; line-height: 1.6; color: var(--ink-3); }

/* ============ 02 두 갈래 ============ */
.way { margin-top: 32px; padding-top: 22px; border-top: 2px solid var(--brand); }
.way__tag {
  display: inline-block; padding: 3px 9px; margin-bottom: 12px;
  background: var(--accent); color: #fff;
  font-family: var(--font-disp); font-size: 10px;
  font-variation-settings: "wght" 700; letter-spacing: .1em; text-transform: uppercase;
}
.way__name {
  font-family: var(--font-disp); font-size: 1.6rem;
  font-variation-settings: "wdth" 86, "wght" 700; letter-spacing: -.022em; line-height: 1.05;
}
.way__ko { margin-top: 3px; font-size: var(--fs-sm); color: var(--ink-3); letter-spacing: .04em; }
.way__list { margin-top: 18px; }
.way__list li {
  position: relative; padding-left: 18px; padding-block: 8px;
  font-size: var(--fs-base); color: var(--ink-2);
  border-bottom: 1px solid var(--line);
}
.way__list li::before {
  content: ""; position: absolute; left: 0; top: 16px;
  width: 7px; height: 1px; background: var(--accent);
}
.way__list .way__warn { color: var(--ink); }
.way__list .way__warn::before { background: #B4442A; width: 7px; height: 7px; top: 13px; }
.way__num { display: flex; align-items: baseline; gap: 10px; margin-top: 16px; }
.way__num dt { font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }
.way__num dd {
  margin: 0; font-size: 1.5rem;
  font-variation-settings: "wdth" 84, "wght" 700; letter-spacing: -.02em;
}
.way__num small { font-size: .45em; font-variation-settings: "wght" 500; margin-left: 3px; color: var(--ink-3); }

/* ============ 03 시공 사례 ============ */
.band--work { padding-bottom: clamp(40px, 8vw, 64px); }
.work {
  margin-top: 28px; margin-bottom: 22px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--line-strong);
}
.work__it { margin: 0; background: var(--surface); }
.work__ph { aspect-ratio: 4 / 3; overflow: hidden; background: var(--brand); }
.work__ph img { width: 100%; height: 100%; object-fit: cover; }
.work__cap { display: block; padding: 12px 12px 16px; }
.work__cap b {
  display: block; font-family: var(--font-disp); font-size: 1.35rem;
  font-variation-settings: "wdth" 82, "wght" 700; letter-spacing: -.025em; line-height: 1;
}
.work__cap b small { font-size: .38em; font-variation-settings: "wght" 500; margin-left: 3px; color: var(--ink-3); }
.work__loc  { display: block; margin-top: 7px; font-size: 12px; color: var(--ink-2); }
.work__kind { display: block; font-size: 11px; color: var(--ink-3); letter-spacing: .05em; }
.work__save {
  display: block; margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--line);
  font-size: 13px; font-variation-settings: "wght" 700; color: var(--accent);
}
.work__save small { font-size: .78em; font-variation-settings: "wght" 400; color: var(--ink-3); margin-left: 2px; }

/* ============ 04 절차 ============ */
.flow { margin-top: 30px; counter-reset: st; border-top: 1px solid var(--line-strong); }
.flow li {
  position: relative; padding: 18px 0 18px 46px;
  border-bottom: 1px solid var(--line);
}
.flow li::before {
  counter-increment: st; content: counter(st, decimal-leading-zero);
  position: absolute; left: 0; top: 19px;
  font-family: var(--font-disp); font-size: 13px;
  font-variation-settings: "wdth" 80, "wght" 800;
  letter-spacing: .04em; color: var(--accent);
}
.flow h3 { font-size: var(--fs-md); font-weight: 700; letter-spacing: -.01em; }
.flow p { margin-top: 5px; font-size: var(--fs-base); color: var(--ink-2); }

/* ============ 05 신뢰 + FAQ ============ */
.band--dark { background: var(--brand); color: var(--brand-ink); }
.band--dark .eyebrow { color: rgba(255, 255, 255, .5); }
.band--dark .eyebrow .ix { color: var(--accent); filter: brightness(1.9); border-color: rgba(255, 255, 255, .28); }

.tally {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  padding-bottom: 30px; margin-bottom: 34px;
  border-bottom: 1px solid rgba(255, 255, 255, .22);
}
.tally dt {
  font-family: var(--font-disp); font-size: clamp(1.7rem, 7vw, 2.3rem);
  font-variation-settings: "wdth" 78, "wght" 800; letter-spacing: -.03em; line-height: 1;
}
.tally dt small { font-size: .4em; font-variation-settings: "wght" 500; margin-left: 2px; opacity: .66; }
.tally dd { margin: 7px 0 0; font-size: 10.5px; letter-spacing: .07em; color: rgba(255, 255, 255, .54); }

.band--dark .faq__item { border-bottom-color: rgba(255, 255, 255, .2); }
.band--dark .faq__item summary { font-size: var(--fs-base); font-weight: 600; }
.band--dark .faq__item summary::after { color: var(--accent); filter: brightness(1.9); }
.band--dark .faq__item p { color: rgba(255, 255, 255, .72); }

/* ============ 06 문의 ============ */
.band--ask { background: var(--surface-alt); }
.ask { margin-top: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.ask label { display: block; }
.ask__wide { grid-column: 1 / -1; }
.ask label > span {
  display: block; margin-bottom: 5px;
  font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3);
}
.ask input, .ask select {
  width: 100%; min-height: 44px; padding: 0 12px;
  font: inherit; font-size: var(--fs-base); color: var(--ink);
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: 0;
}
.ask select { appearance: none; -webkit-appearance: none; padding-right: 30px;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-3) 50%),
                    linear-gradient(135deg, var(--ink-3) 50%, transparent 50%);
  background-position: calc(100% - 16px) 20px, calc(100% - 11px) 20px;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}
.ask__prev {
  grid-column: 1 / -1; margin: 4px 0 0; padding: 14px 15px;
  font-family: var(--font-mono); font-size: 12px; line-height: 1.75;
  white-space: pre-wrap; word-break: break-word;
  background: var(--brand); color: rgba(255, 255, 255, .88);
}
.ask__btns { grid-column: 1 / -1; display: flex; gap: 10px; }
.ask__btns .btn { margin-top: 6px; flex: 1; }
.ask__hint { grid-column: 1 / -1; margin-top: 2px; }

/* ============ 푸터 ============ */
.foot { padding-block: 40px 56px; color: rgba(255, 255, 255, .58); }
.mark--foot { color: #fff; }
.foot__say { margin-top: 10px; font-size: var(--fs-sm); color: rgba(255, 255, 255, .5); font-style: italic; }
.foot dl {
  margin-top: 26px; padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .2);
  grid-template-columns: 62px 1fr;
}
.foot dt { color: rgba(255, 255, 255, .42); font-size: 11px; }
.foot dd { color: rgba(255, 255, 255, .78); }
.foot__fine {
  margin-top: 24px; padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 11px; line-height: 1.7; color: rgba(255, 255, 255, .38);
}

/* ============ 하단 고정 CTA ============ */
.cta-bar { background: var(--line-strong); }
.cta-bar__btn {
  font-family: var(--font-disp); font-size: 13.5px;
  font-variation-settings: "wght" 700; letter-spacing: .03em;
  background: var(--surface-alt);
}
.cta-bar__btn--primary { background: var(--accent); color: #fff; }

/* ============ 데스크탑 ============ */
@media (min-width: 720px) {
  :root { --container: 680px; }
  .work { grid-template-columns: repeat(3, 1fr); }
  .hero__title { font-size: 3.25rem; }
}