/* ================================================================
   home-waterproof.css — 일액형방수제 메인 전용 프리미엄 쇼룸 스타일
   범위: .hydro-home 안에서만 적용. 공용 assets/style.css(서브페이지/헤더/푸터)는 건드리지 않는다.
   컬러: 메가본드 공식 브랜드 블루 #0047BB(Pantone 2728C, ta.megabondworld.com CSS 확인) 기준.
================================================================ */
.hydro-home {
  --c-canvas: #F4F6F8;
  --c-surface: #FFFFFF;
  --c-ink: #17212B;
  --c-muted: #526171;
  --c-blue: #0047BB;
  --c-blue-deep: #002D7A;
  --c-blue-soft: #E8EFFB;
  --c-yellow: #F2C300;
  --c-line: #D7DEE7;

  --w-main: 1360px;
  --w-wide: 1600px;
  --w-reading: 780px;
  --gutter: clamp(20px, 4vw, 72px);
  --gap: clamp(20px, 2.2vw, 36px);
  --section-space: clamp(72px, 8vw, 132px);

  --radius-control: 0;
  --radius-panel: 0;
  --ease-ui: cubic-bezier(.22, 1, .36, 1);

  background: var(--c-canvas);
  color: var(--c-ink);
  word-break: keep-all;
  overflow-wrap: break-word;
}
.hydro-home :is(h1, h2, h3) { text-wrap: balance; line-height: 1.25; }
.hydro-home p { line-height: 1.7; }
.hydro-home .long-token { overflow-wrap: anywhere; }
.hydro-home * { box-sizing: border-box; }
.hydro-home img { max-width: 100%; display: block; }

.hydro-home .hw-container { max-width: var(--w-main); margin: 0 auto; padding: 0 var(--gutter); }
.hydro-home .hw-container--wide { max-width: var(--w-wide); }
.hydro-home .hw-container--reading { max-width: var(--w-reading); }

/* ===== 챕터 공통 ===== */
.hydro-home .hw-chapter { padding: var(--section-space) 0; }
.hydro-home .hw-chapter--surface { background: var(--c-surface); }
.hydro-home .hw-chapter--soft { background: var(--c-blue-soft); }
.hydro-home .hw-chapter--deep {
  background:
    radial-gradient(ellipse 900px 500px at 12% 0%, rgba(79,130,222,.22) 0%, rgba(79,130,222,0) 60%),
    radial-gradient(ellipse 700px 500px at 100% 100%, rgba(10,20,50,.5) 0%, rgba(10,20,50,0) 60%),
    linear-gradient(160deg, #003a99 0%, var(--c-blue-deep) 55%, #001c4d 100%);
  color: #fff;
}
.hydro-home .hw-chapter--deep .hw-head__eyebrow,
.hydro-home .hw-chapter--deep .hw-head p { color: rgba(255,255,255,.78); }

.hydro-home .hw-head { max-width: var(--w-reading); margin: 0 0 clamp(28px, 4vw, 48px); }
.hydro-home .hw-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.hydro-home .hw-head__eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--c-blue); margin-bottom: 10px;
}
.hydro-home .hw-head h2 { font-size: clamp(30px, 3.8vw, 50px); font-weight: 800; margin: 0 0 10px; }
.hydro-home .hw-head h2.hw-head__h2--sm { font-size: clamp(22px, 2.2vw, 26px); }
.hydro-home .hw-head p { color: var(--c-muted); font-size: 18px; margin: 0; }

/* [data-rise] 대상은 항상 보이는 상태가 기본값. IntersectionObserver 기반 JS(home-waterproof.js)가
   실행됐을 때만 화면 밖 섹션에 한해 motion-pending 클래스를 붙여 등장 연출을 만든다.
   CSS만으로 미리 숨기지 않는다(브리프 20장: head에서 .js로 전부 숨기는 방식 금지). */
.hydro-home [data-rise] { transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1); }
/* rise(기본): 아래에서 위로 */
.hydro-home [data-rise].motion-pending,
.hydro-home [data-rise][data-motion="rise"].motion-pending { opacity: .001; transform: translateY(28px); }
/* split: 좌우에서 등장 (2단 구성 섹션의 각 측을 서로 반대 방향에서 들어오게 해 하나로 움직이지 않게 함) */
.hydro-home [data-rise][data-motion="split-left"].motion-pending { opacity: .001; transform: translateX(-36px); }
.hydro-home [data-rise][data-motion="split-right"].motion-pending { opacity: .001; transform: translateX(36px); }
/* scale: 살짝 확대되며 자리를 잡는 느낌 (독립 오브젝트/제품 이미지용) */
.hydro-home [data-rise][data-motion="scale"].motion-pending { opacity: .001; transform: scale(.93); }
/* stagger: 컨테이너 자체는 항상 보이고, 자식 각각이 순차적으로 등장.
   컴포넌트 종류마다 실제 움직임 방향/형태를 다르게 줘서 "페이드업 하나로 통일"되지 않게 한다. */
.hydro-home [data-rise][data-motion="stagger"] > * {
  transition: opacity .6s cubic-bezier(.22,1,.36,1), transform .6s cubic-bezier(.22,1,.36,1);
}
.hydro-home [data-rise][data-motion="stagger"] > *.motion-pending { opacity: .001; transform: translateY(22px); }
/* 가이드 카드: 살짝 확대되며 팝인 (독립된 카드 오브젝트 느낌) */
.hydro-home .hw-guide[data-motion="stagger"] > *.motion-pending { transform: scale(.94) translateY(8px); }
/* 전체 규격 목록: 표 형태 데이터 행이라 좌에서 슬라이드 */
.hydro-home .hw-compare__list[data-motion="stagger"] > *.motion-pending { transform: translateX(-18px); transition-duration: .5s; }
/* 개념도 단계 리스트: 얇은 인디케이터가 옆에서 그어지는 느낌으로 우에서 슬라이드 */
.hydro-home .hw-diagram__list[data-motion="stagger"] > *.motion-pending { transform: translateX(14px); transition-duration: .5s; }
/* 사용 전 확인 단계: 번호가 있는 절차라 아래에서 위로(기본값 유지) + 지속시간만 살짝 길게 */
.hydro-home .hw-steps__list[data-motion="stagger"] > *.motion-pending { transition-duration: .65s; }
@media (max-width: 1023px) {
  .hydro-home [data-rise].motion-pending,
  .hydro-home [data-rise][data-motion="rise"].motion-pending { transform: translateY(18px); }
  .hydro-home [data-rise][data-motion="split-left"].motion-pending,
  .hydro-home [data-rise][data-motion="split-right"].motion-pending { transform: translateY(18px); }
}
@media (prefers-reduced-motion: reduce) {
  .hydro-home [data-rise],
  .hydro-home [data-rise][data-motion="stagger"] > * { transition: none; }
}

/* ================================================================
   1. 제품 쇼룸형 히어로
================================================================ */
/* 첫 화면: 브랜드 블루 큰 면 위에 H1 + 제품, 오른쪽은 밝은 촬영 면 — 버튼에만 쓰던 블루를 장면 전체로 확장 */
.hydro-home .hw-hero {
  padding: clamp(28px, 4vw, 48px) 0 var(--section-space); color: #fff;
  background:
    radial-gradient(ellipse 800px 500px at 90% 10%, rgba(255,255,255,.10) 0%, rgba(255,255,255,0) 55%),
    radial-gradient(ellipse 700px 600px at 0% 100%, rgba(0,26,74,.35) 0%, rgba(0,26,74,0) 60%),
    linear-gradient(135deg, #1758d1 0%, var(--c-blue) 45%, #003a99 100%);
}
.hydro-home .hw-hero__grid {
  display: grid; grid-template-columns: 43fr 57fr; gap: clamp(28px, 4vw, 64px); align-items: center;
}
.hydro-home .hw-hero__copy { max-width: 460px; }
.hydro-home .hw-hero__eyebrow {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700;
  color: rgba(255,255,255,.75); letter-spacing: .04em; margin-bottom: 18px;
}
.hydro-home .hw-hero__eyebrow::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--c-yellow); }
.hydro-home .hw-hero h1 {
  font-size: clamp(48px, 7vw, 112px); font-weight: 800; letter-spacing: -.02em; line-height: 1.05; margin: 0 0 14px; color: #fff;
}
/* 두 span 사이에 공백이 없어 브라우저가 "일액형방수제"를 한 단어로 보고 단어 중간(수/제 사이)을 강제로 잘랐던 문제 —
   각 의미 단위를 항상 줄바꿈되는 블록으로 고정해 중간에서 잘리는 것을 원천 차단한다. */
.hydro-home .hw-hero h1 span { display: block; word-break: keep-all; }
.hydro-home .hw-hero__product { font-size: clamp(26px, 2.6vw, 32px); font-weight: 700; color: var(--c-yellow); margin: 0 0 18px; }
.hydro-home .hw-hero__desc { font-size: clamp(18px, 1.5vw, 21px); color: rgba(255,255,255,.85); margin: 0 0 30px; max-width: 44ch; }
.hydro-home .hw-hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 22px; }
.hydro-home .hw-hero__link { font-size: 15px; color: rgba(255,255,255,.75); text-decoration: underline; text-underline-offset: 3px; }
.hydro-home .hw-hero__link:hover { color: #fff; }
/* 블루 배경 위 주 버튼은 흰바탕+파란글자로 반전(블루온블루로 묻히는 것 방지). 보조행동은 hw-btn--ghost-light(반투명 아웃라인)로 채움버튼 중복을 피한다 */
.hydro-home .hw-hero .hw-btn--primary { background: #fff; color: var(--c-blue); }
@media (hover: hover) and (pointer: fine) { .hydro-home .hw-hero .hw-btn--primary:hover { background: var(--c-blue-soft); } }

.hydro-home .hw-hero__stage { position: relative; }
.hydro-home .hw-hero__stage-plate {
  position: relative; aspect-ratio: 4/3; min-height: 420px;
  background: linear-gradient(180deg, #FFFFFF 0%, #EEF2F7 78%, #E3E9F1 100%);
  overflow: hidden; display: flex; align-items: center; justify-content: center;
  clip-path: polygon(56px 0, 100% 0, 100% 100%, 0 100%, 0 56px);
}
.hydro-home .hw-hero__stage-plate::after {
  content: ''; position: absolute; left: 10%; right: 10%; bottom: 9%; height: 26px;
  background: radial-gradient(ellipse at center, rgba(23,33,43,.16) 0%, rgba(23,33,43,0) 72%);
  border-radius: 50%; z-index: 1;
}
.hydro-home .hw-hero__stage-plate img {
  position: relative; z-index: 2; width: auto; height: 74%; max-width: 82%; object-fit: contain;
  filter: drop-shadow(0 18px 20px rgba(23,33,43,.14));
}
.hydro-home .hw-hero__stage-note {
  margin-top: 14px; font-size: 13px; color: rgba(255,255,255,.75); text-align: center; font-variant-numeric: tabular-nums;
}

/* ================================================================
   현장사진 마퀴 — 히어로 직후, 무한 가로 스크롤로 실사진을 계속 보여줘 스크롤을 유도한다.
================================================================ */
.hydro-home .hw-marquee { background: var(--c-ink); padding: 18px 0; overflow: hidden; }
.hydro-home .hw-marquee__track {
  display: flex; gap: 14px; width: max-content;
  animation: hwMarqueeScroll 52s linear infinite;
}
.hydro-home .hw-marquee:hover .hw-marquee__track { animation-play-state: paused; }
.hydro-home .hw-marquee__item {
  flex: none; width: 220px; aspect-ratio: 16/10; margin: 0; overflow: hidden; background: var(--c-canvas);
}
.hydro-home .hw-marquee__item img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(.15); transition: filter .3s var(--ease-ui); }
.hydro-home .hw-marquee__item:hover img { filter: grayscale(0); }
@keyframes hwMarqueeScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (max-width: 640px) {
  .hydro-home .hw-marquee__item { width: 150px; }
}
@media (prefers-reduced-motion: reduce) {
  .hydro-home .hw-marquee__track { animation: none; overflow-x: auto; }
}

@media (max-width: 1023px) {
  .hydro-home .hw-hero__grid { grid-template-columns: 1fr; }
  .hydro-home .hw-hero__copy { max-width: none; order: 1; }
  .hydro-home .hw-hero__stage { order: 2; }
  .hydro-home .hw-hero__stage-plate { min-height: 280px; clip-path: polygon(24px 0, 100% 0, 100% 100%, 0 100%, 0 24px); }
}
@media (max-width: 640px) {
  .hydro-home .hw-hero__actions .hw-btn { width: 100%; }
}

/* ===== 공통 버튼 ===== */
.hydro-home .hw-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 14px 26px; border-radius: var(--radius-control);
  font-weight: 700; font-size: 17px; border: 1.5px solid transparent; cursor: pointer;
  transition: background var(--ease-ui) .18s, border-color var(--ease-ui) .18s, transform var(--ease-ui) .18s, color var(--ease-ui) .18s;
}
.hydro-home .hw-btn:active { transform: translateY(1px); }
.hydro-home .hw-btn--primary { background: var(--c-blue); color: #fff; }
@media (hover: hover) and (pointer: fine) { .hydro-home .hw-btn--primary:hover { background: var(--c-blue-deep); } }
.hydro-home .hw-btn--outline { background: transparent; border-color: var(--c-line); color: var(--c-ink); }
@media (hover: hover) and (pointer: fine) { .hydro-home .hw-btn--outline:hover { border-color: var(--c-blue); color: var(--c-blue); } }
.hydro-home .hw-btn--ghost-light { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.5); color: #fff; }
@media (hover: hover) and (pointer: fine) { .hydro-home .hw-btn--ghost-light:hover { background: #fff; color: var(--c-blue-deep); } }
.hydro-home .hw-btn[aria-disabled="true"] { opacity: .5; pointer-events: none; }
.hydro-home .hw-btn__price { font-weight: 700; opacity: .85; font-size: 14px; }

.hydro-home :where(a, button, [role="button"], summary, input, label, select):focus-visible {
  outline: 2px solid var(--c-blue); outline-offset: 2px;
}
/* 블루/딥블루 배경 구간(히어로·마지막CTA)은 같은 색 아웃라인이 안 보이므로 흰색으로 반전 */
.hydro-home .hw-hero :where(a, button, [role="button"]):focus-visible,
.hydro-home .hw-chapter--deep :where(a, button, [role="button"]):focus-visible {
  outline-color: #fff;
}

/* ================================================================
   2. 제품·용량 선택 (핵심 구매 UX)
================================================================ */
.hydro-home .hw-stage {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 4vw, 64px); align-items: start;
}
.hydro-home .hw-stage__media {
  position: relative; aspect-ratio: 1/1; background: var(--c-surface); border: 1px solid var(--c-line);
  border-radius: var(--radius-panel); overflow: hidden;
}
.hydro-home .hw-stage__panel {
  grid-area: 1/1; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  padding: 8%; opacity: 0; visibility: hidden; transition: opacity .2s var(--ease-ui);
}
.hydro-home .hw-stage__panel.is-active { opacity: 1; visibility: visible; }
.hydro-home .hw-stage__panel img { width: 100%; height: 100%; object-fit: contain; }
.hydro-home .hw-stage__zoom {
  position: absolute; right: 14px; bottom: 14px; width: 40px; height: 40px; border-radius: 50%;
  background: #fff; border: 1px solid var(--c-line); display: flex; align-items: center; justify-content: center;
  color: var(--c-ink); font-size: 18px;
}

.hydro-home .hw-stage__info { display: flex; flex-direction: column; gap: 22px; }
.hydro-home .hw-family { display: flex; gap: 10px; border: 0; padding: 0; margin: 0; }
.hydro-home .hw-family legend { font-size: 13px; font-weight: 700; color: var(--c-muted); margin-bottom: 10px; text-transform: uppercase; letter-spacing: .06em; }
.hydro-home .hw-family__opt {
  flex: 1; display: block; position: relative;
}
.hydro-home .hw-family__opt input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.hydro-home .hw-family__opt span {
  display: flex; flex-direction: column; gap: 2px; padding: 10px 4px 14px; cursor: pointer;
  border-bottom: 2px solid var(--c-line); transition: border-color .16s var(--ease-ui), color .16s var(--ease-ui);
}
.hydro-home .hw-family__opt span strong { font-size: 18px; }
.hydro-home .hw-family__opt span em { font-style: normal; font-size: 13px; color: var(--c-muted); }
.hydro-home .hw-family__opt input:checked + span { border-bottom: 3px solid var(--c-blue); color: var(--c-blue); }
.hydro-home .hw-family__opt input:checked + span strong { color: var(--c-blue); }
.hydro-home .hw-family__opt input:focus-visible + span { outline: 2px solid var(--c-blue); outline-offset: 2px; }

.hydro-home .hw-role { font-size: 15.5px; color: var(--c-muted); margin: 0; padding: 12px 14px; background: var(--c-blue-soft); border-radius: var(--radius-control); }
.hydro-home .hw-role[hidden] { display: none; }

.hydro-home .hw-variant { display: none; border: 0; padding: 0; margin: 0; }
.hydro-home .hw-variant.is-active { display: block; }
.hydro-home .hw-variant legend { font-size: 13px; font-weight: 700; color: var(--c-muted); margin-bottom: 10px; text-transform: uppercase; letter-spacing: .06em; }
.hydro-home .hw-variant__row { display: flex; gap: 10px; }
.hydro-home .hw-variant__opt { position: relative; flex: 1; }
.hydro-home .hw-variant__opt input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.hydro-home .hw-variant__opt span {
  display: flex; align-items: center; justify-content: center; min-height: 60px; text-align: center;
  padding: 12px; border: 1.5px solid var(--c-line); border-radius: var(--radius-control);
  cursor: pointer; font-weight: 700; font-size: clamp(24px, 2vw, 26px);
  transition: border-color .16s var(--ease-ui), background .16s var(--ease-ui), color .16s var(--ease-ui);
  background: #fff;
}
.hydro-home .hw-variant__opt input:checked + span { border-color: var(--c-blue); background: var(--c-blue); color: #fff; }
.hydro-home .hw-variant__opt input:focus-visible + span { outline: 2px solid var(--c-blue); outline-offset: 2px; }

.hydro-home .hw-summary { padding: 18px; background: var(--c-canvas); border-radius: var(--radius-panel); min-height: 96px; }
.hydro-home .hw-summary__name { font-weight: 700; font-size: 17px; margin: 0 0 4px; }
.hydro-home .hw-summary__price { font-size: 24px; font-weight: 800; color: var(--c-blue); margin: 0 0 2px; font-variant-numeric: tabular-nums; }
.hydro-home .hw-summary__note { font-size: 13px; color: var(--c-muted); margin: 0; }

.hydro-home .hw-stage__cta { margin-bottom: 0; }

/* 전체 규격 한눈에 보기 — JS 없이도 4개 상품 전부의 이름/역할/규격/실링크를 보장하는 폴백이자 비교표 대체 */
.hydro-home .hw-compare { margin-top: 40px; }
.hydro-home .hw-compare__list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.hydro-home .hw-compare__item {
  display: flex; flex-direction: column; gap: 10px; padding: 16px; background: var(--c-surface);
  border: 1px solid var(--c-line); border-radius: var(--radius-control); text-decoration: none; color: var(--c-ink);
  transition: border-color .16s var(--ease-ui), box-shadow .16s var(--ease-ui);
}
@media (hover: hover) and (pointer: fine) {
  .hydro-home .hw-compare__item:hover { border-color: var(--c-blue); box-shadow: 0 8px 20px rgba(0,71,187,.1); }
}
.hydro-home .hw-compare__thumb { aspect-ratio: 1/1; background: var(--c-canvas); border-radius: 0; display: flex; align-items: center; justify-content: center; padding: 10%; }
.hydro-home .hw-compare__thumb img { width: 100%; height: 100%; object-fit: contain; }
.hydro-home .hw-compare__name { font-weight: 700; font-size: 15px; }
.hydro-home .hw-compare__role { font-size: 12.5px; color: var(--c-muted); }
.hydro-home .hw-compare__price { font-weight: 800; color: var(--c-blue); font-size: 16px; font-variant-numeric: tabular-nums; }
.hydro-home .hw-compare__link { font-size: 13.5px; color: var(--c-blue); text-decoration: underline; text-underline-offset: 2px; margin-top: auto; }
.hydro-home .hw-compare__updated { font-size: 12px; color: var(--c-muted); margin-top: 16px; }

@media (max-width: 1023px) {
  .hydro-home .hw-stage { grid-template-columns: 1fr; }
  .hydro-home .hw-compare__list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .hydro-home .hw-compare__list { grid-template-columns: 1fr; }
}

/* ================================================================
   3. 바탕면과 방수층 — 개념도
================================================================ */
.hydro-home .hw-diagram { display: grid; grid-template-columns: 6fr 4fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.hydro-home .hw-diagram__visual { padding: clamp(8px, 1.5vw, 20px) 0; }
.hydro-home .hw-diagram__svg { width: 100%; height: auto; display: block; }
.hydro-home .hw-diagram__caption { font-size: 12.5px; color: rgba(255,255,255,.45); text-align: left; margin-top: 10px; }
.hydro-home .hw-diagram__list { list-style: none; margin: 0; padding: 0; }
.hydro-home .hw-diagram__row { margin: 0; }

.hydro-home .hw-diagram__layer { transition: opacity .3s var(--ease-ui); opacity: 1; }
.hydro-home .hw-diagram[data-active="substrate"] .hw-diagram__layer--waterproof,
.hydro-home .hw-diagram[data-active="primer"] .hw-diagram__layer--waterproof { opacity: .55; }
.hydro-home .hw-diagram[data-active="waterproof"] .hw-diagram__layer--substrate,
.hydro-home .hw-diagram[data-active="primer"] .hw-diagram__layer--substrate { opacity: .7; }
/* 접점(프라이머) 강조선 — 평소엔 은은하게, 선택 시 두껍고 또렷하게 */
.hydro-home .hw-diagram__outline--primer { transition: opacity .3s var(--ease-ui), stroke-width .3s var(--ease-ui); opacity: .6; }
.hydro-home .hw-diagram[data-active="primer"] .hw-diagram__outline--primer { opacity: 1; stroke-width: 6; }
.hydro-home .hw-diagram__label-group { transition: opacity .3s var(--ease-ui); opacity: .55; }
.hydro-home .hw-diagram[data-active="substrate"] .hw-diagram__label-group--substrate,
.hydro-home .hw-diagram[data-active="primer"] .hw-diagram__label-group--primer,
.hydro-home .hw-diagram[data-active="waterproof"] .hw-diagram__label-group--waterproof { opacity: 1; }

/* 깊은 블루 배경 위 — 카드형 탭 대신 선으로 구분된 목록, 활성 표시는 작은 노란 점 + 밝은 글자 */
.hydro-home .hw-diagram__list { display: flex; flex-direction: column; margin-bottom: 24px; border-top: 1px solid rgba(255,255,255,.16); }
.hydro-home .hw-diagram__tab {
  position: relative; text-align: left; padding: 16px 4px 16px 22px; border: none; border-bottom: 1px solid rgba(255,255,255,.16);
  background: transparent; cursor: pointer; transition: padding-left .16s var(--ease-ui);
}
.hydro-home .hw-diagram__tab::before {
  content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px; background: rgba(255,255,255,.3); transition: background .16s var(--ease-ui);
}
.hydro-home .hw-diagram__tab strong { display: block; font-size: 15.5px; margin-bottom: 2px; color: rgba(255,255,255,.7); }
.hydro-home .hw-diagram__tab span { font-size: 13.5px; color: rgba(255,255,255,.5); }
.hydro-home .hw-diagram__tab.is-active { padding-left: 26px; }
.hydro-home .hw-diagram__tab.is-active::before { background: var(--c-yellow); width: 8px; height: 8px; }
.hydro-home .hw-diagram__tab.is-active strong { color: #fff; }
.hydro-home .hw-diagram__tab.is-active span { color: rgba(255,255,255,.72); }

/* 패널은 버튼 제목을 반복하지 않는다 — 버튼(레이어1: 제목)이 눌리면 그 아래에 패널(레이어2: 상세설명)이
   들여쓰기+왼쪽 강조선으로 "이 버튼에 속한 내용"임을 보여준다. 제목 중복 없이 위계만으로 관계를 표현. */
.hydro-home .hw-diagram__panel {
  display: none; margin: 0 0 16px 22px; padding: 2px 0 2px 16px; border-left: 2px solid rgba(242,195,0,.4);
}
.hydro-home .hw-diagram__panel.is-active { display: block; }
.hydro-home .hw-diagram__panel p { font-size: 15px; line-height: 1.65; color: rgba(255,255,255,.72); margin: 0; }
.hydro-home .hw-diagram__note {
  font-size: 12.5px; color: rgba(255,255,255,.5); border-top: 1px solid rgba(255,255,255,.16); padding-top: 12px; margin-top: 16px;
}
/* JS 미적용(js-enhanced 클래스 없음) 시: 탭 숨기고 3개 설명 전부 순서대로 노출 */
/* 버튼은 JS 없이도 그대로 둔다 — 패널이 더 이상 제목을 반복하지 않으므로 버튼이 유일한 제목 출처다 */
.hydro-home .hw-diagram:not(.js-enhanced) .hw-diagram__tab { cursor: default; }
.hydro-home .hw-diagram:not(.js-enhanced) .hw-diagram__tab::before { display: none; }
.hydro-home .hw-diagram:not(.js-enhanced) .hw-diagram__panel { display: block !important; }

@media (max-width: 1023px) {
  .hydro-home .hw-diagram { grid-template-columns: 1fr; }
}

/* ================================================================
   4. 상황별 가이드 (3열×2행)
================================================================ */
.hydro-home .hw-guide { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.hydro-home .hw-guide__card {
  display: flex; flex-direction: column; height: 100%; text-decoration: none; color: var(--c-ink);
}
.hydro-home .hw-guide__img { aspect-ratio: 16/10; background: var(--c-canvas); border-radius: 0; overflow: hidden; }
.hydro-home .hw-guide__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s var(--ease-ui); }
@media (hover: hover) and (pointer: fine) {
  .hydro-home .hw-guide__card:hover .hw-guide__img img { transform: scale(1.035); }
}
.hydro-home .hw-guide__body { padding: 16px 2px 0; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.hydro-home .hw-guide__body h3 { font-size: 23px; margin: 0; }
.hydro-home .hw-guide__body p { font-size: 15px; color: var(--c-muted); margin: 0; flex: 1; }
.hydro-home .hw-guide__more { font-size: 14px; font-weight: 700; color: var(--c-blue); margin-top: 8px; }
.hydro-home .hw-guide__card--cta { background: var(--c-blue); color: #fff; border-radius: var(--radius-panel); padding: 24px; justify-content: center; }
.hydro-home .hw-guide__card--cta .hw-guide__body { padding: 0; justify-content: center; }
.hydro-home .hw-guide__card--cta h3 { font-size: 23px; }
.hydro-home .hw-guide__card--cta p { color: rgba(255,255,255,.82); }
.hydro-home .hw-guide__card--cta .hw-guide__more { color: var(--c-yellow); }

@media (max-width: 1023px) { .hydro-home .hw-guide { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .hydro-home .hw-guide { grid-template-columns: 1fr; } }

/* ================================================================
   5. 사용 전 확인 (5단계)
================================================================ */
.hydro-home .hw-steps { display: grid; grid-template-columns: 220px 1fr; gap: clamp(24px, 3vw, 48px); }
.hydro-home .hw-steps__sticky { position: sticky; top: 96px; align-self: start; }
.hydro-home .hw-steps__sticky h3 { font-size: 20px; margin: 0 0 8px; }
.hydro-home .hw-steps__sticky p { font-size: 14px; color: var(--c-muted); margin: 0; }
.hydro-home .hw-steps__list { display: flex; flex-direction: column; }
.hydro-home .hw-step { display: grid; grid-template-columns: 40px 1fr; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--c-line); }
.hydro-home .hw-step:first-child { padding-top: 0; }
.hydro-home .hw-step__num {
  width: 30px; height: 30px; border-radius: 50%; background: var(--c-blue-soft); color: var(--c-blue-deep);
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px;
}
.hydro-home .hw-step h4 { font-size: clamp(20px, 1.8vw, 22px); margin: 0 0 6px; }
.hydro-home .hw-step p { font-size: 17.5px; line-height: 1.75; color: var(--c-muted); margin: 0; }

@media (max-width: 900px) {
  .hydro-home .hw-steps { grid-template-columns: 1fr; }
  .hydro-home .hw-steps__sticky { position: static; margin-bottom: 20px; }
}

/* ================================================================
   6. 현장 확인 · 공식 자료 (신뢰)
================================================================ */
.hydro-home .hw-trust { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.hydro-home .hw-trust__media { aspect-ratio: 4/3; border-radius: var(--radius-panel); overflow: hidden; }
.hydro-home .hw-trust__media img { width: 100%; height: 100%; object-fit: cover; }
.hydro-home .hw-trust__media-caption { font-size: 12.5px; color: var(--c-muted); margin-top: 8px; }
.hydro-home .hw-trust__list { display: flex; flex-direction: column; gap: 16px; margin: 20px 0 0; padding: 0; list-style: none; }
.hydro-home .hw-trust__list li { display: flex; gap: 10px; font-size: 15.5px; padding: 14px 16px; background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--radius-control); }
.hydro-home .hw-trust__list li::before { content: ''; flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--c-blue); margin-top: 9px; }
.hydro-home .hw-doc-note { font-size: 13px; color: var(--c-muted); margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--c-line); }
.hydro-home .hw-trust__cta { margin-top: 20px; margin-bottom: 10px; }

@media (max-width: 1023px) { .hydro-home .hw-trust { grid-template-columns: 1fr; } }

/* ================================================================
   7. FAQ — 공용 .dp-faq 구조 재사용, 색만 브랜드 블루로 보정
================================================================ */
.hydro-home .dp-faq__q::after { color: var(--c-blue); }
/* Q 배지 반복을 줄인다(브리프 9장) — 질문 텍스트만으로 충분히 읽힘, 이 홈페이지 범위에서만 숨김 */
.hydro-home .dp-faq__q-badge { display: none; }
.hydro-home details.dp-faq__item { min-height: 64px; }

/* ================================================================
   8. 마지막 CTA
================================================================ */
.hydro-home .hw-final {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 4vw, 56px); align-items: center;
}
.hydro-home .hw-final__media { aspect-ratio: 4/3; border-radius: var(--radius-panel); overflow: hidden; background: var(--c-canvas); display: flex; align-items: center; justify-content: center; padding: 8%; }
.hydro-home .hw-final__media img { width: 100%; height: 100%; object-fit: contain; }
.hydro-home .hw-final__body h2 { font-size: clamp(26px, 3vw, 36px); margin: 0 0 12px; }
.hydro-home .hw-final__body p { color: var(--c-muted); margin: 0 0 24px; font-size: 17px; }
@media (max-width: 1023px) { .hydro-home .hw-final { grid-template-columns: 1fr; } .hydro-home .hw-final__media { order: -1; max-width: 320px; margin: 0 auto; } }

/* ================================================================
   모바일 구매바 (sticky bottom)
================================================================ */
.hydro-home .hw-buybar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; display: none;
  background: #fff; border-top: 1px solid var(--c-line); padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  box-shadow: 0 -6px 20px rgba(23,33,43,.08);
  transform: translateY(0); transition: transform .24s var(--ease-ui);
}
.hydro-home .hw-buybar.is-hidden { transform: translateY(100%); }
.hydro-home .hw-buybar__row { display: flex; align-items: center; gap: 12px; max-width: var(--w-main); margin: 0 auto; }
.hydro-home .hw-buybar__info { flex: 1; min-width: 0; }
.hydro-home .hw-buybar__name { font-size: 13px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hydro-home .hw-buybar__price { font-size: 15px; font-weight: 800; color: var(--c-blue); font-variant-numeric: tabular-nums; }
.hydro-home .hw-buybar .hw-btn { min-height: 46px; padding: 10px 20px; flex: none; }

@media (max-width: 768px) {
  .hydro-home .hw-buybar { display: block; }
  .hydro-home { padding-bottom: 78px; }
}

/* 이 페이지에서만 공용 원형 플로팅 카트 아이콘을 숨긴다(모바일 구매바로 대체) */
body.hw-has-buybar .dp-float-cta { display: none; }

@media (prefers-reduced-motion: reduce) {
  .hydro-home *, .hydro-home *::before, .hydro-home *::after {
    animation-duration: .01ms !important; transition-duration: .01ms !important;
  }
}