/* ===========================================
   하츠 전열교환기 — Haatz Theme
   =========================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --teal:    #0d9488;
  --teal-d:  #0f766e;
  --teal-l:  #f0fdfa;
  --navy:    #0f172a;
  --text:    #1e293b;
  --muted:   #64748b;
  --border:  #e2e8f0;
  --bg:      #f8fafc;
  --white:   #ffffff;
  --radius:  14px;
  --shadow:  0 4px 24px rgba(13,148,136,.13);
  --amber:   #f59e0b;
}

html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans KR', 'Apple SD Gothic Neo', sans-serif; color: var(--text); line-height: 1.7; background: var(--white); }
img { max-width: 100%; height: auto; display: block; }
a   { text-decoration: none; color: inherit; }
ul  { list-style: none; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.section    { padding: 88px 0; }

/* --- 섹션 헤드 --- */
.section-head { text-align: center; margin-bottom: 52px; }
.section-head .label {
  display: inline-block;
  background: var(--teal-l); color: var(--teal);
  font-size: .73rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase;
  padding: 5px 16px; border-radius: 40px; margin-bottom: 12px;
}
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 900; line-height: 1.3; margin-bottom: 12px; }
.section-head h2 em { color: var(--teal); font-style: normal; }
.section-head p { color: var(--muted); font-size: 1rem; max-width: 520px; margin: 0 auto; }

/* ===========================================
   HEADER
   =========================================== */
#site-header {
  position: sticky; top: 0; z-index: 900;
  background: var(--white); border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 16px rgba(0,0,0,.06);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between; height: 68px;
}
.logo { display: flex; align-items: center; gap: 11px; }
.logo-mark {
  width: 42px; height: 42px; background: var(--teal);
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.15rem; font-weight: 900; letter-spacing: -.03em;
}
.logo-text { line-height: 1.2; }
.logo-text strong { display: block; font-size: 1.08rem; font-weight: 900; color: var(--teal); }
.logo-text span   { font-size: .68rem; color: var(--muted); letter-spacing: .04em; }

.nav-menu { display: flex; align-items: center; gap: 30px; }
.nav-menu a { font-size: .93rem; font-weight: 600; color: #374151; transition: color .2s; }
.nav-menu a:hover { color: var(--teal); }

.header-cta { display: flex; align-items: center; gap: 16px; }
.header-tel { font-weight: 800; font-size: .98rem; color: var(--teal); }
.header-tel span { display: block; font-size: .63rem; font-weight: 400; color: var(--muted); text-align: center; }
.btn-consult {
  background: var(--teal); color: #fff;
  padding: 9px 20px; border-radius: 8px; font-size: .88rem; font-weight: 700;
  transition: background .2s, transform .15s;
}
.btn-consult:hover { background: var(--teal-d); transform: translateY(-1px); }

.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--navy); margin: 5px 0; transition: all .3s; }

/* ===========================================
   HERO — 전체화면 사진 배경
   =========================================== */
#hero {
  position: relative;
  min-height: 92vh;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transform: scale(1.03);
  transition: transform 8s ease;
}
#hero:hover .hero-bg { transform: scale(1.06); }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(15,23,42,.82) 0%, rgba(15,23,42,.45) 60%, rgba(15,23,42,.15) 100%);
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 680px; color: #fff;
  padding: 60px 0;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(13,148,136,.35); border: 1px solid rgba(13,148,136,.6);
  backdrop-filter: blur(8px);
  padding: 6px 18px; border-radius: 50px;
  font-size: .78rem; font-weight: 700; letter-spacing: .1em;
  color: #5eead4; margin-bottom: 28px;
}
.hero-tag .dot { width: 7px; height: 7px; background: #2dd4bf; border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.3)} }

.hero-content h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 900; line-height: 1.2; margin-bottom: 22px;
}
.hero-content h1 em { color: #5eead4; font-style: normal; }
.hero-content p { font-size: 1.1rem; opacity: .88; line-height: 1.8; margin-bottom: 40px; }

.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-hero-primary {
  background: var(--teal); color: #fff;
  padding: 16px 36px; border-radius: 10px; font-size: 1rem; font-weight: 800;
  transition: background .2s, transform .2s, box-shadow .2s;
  box-shadow: 0 6px 24px rgba(13,148,136,.5);
}
.btn-hero-primary:hover { background: var(--teal-d); transform: translateY(-2px); box-shadow: 0 10px 32px rgba(13,148,136,.55); }
.btn-hero-outline {
  background: rgba(255,255,255,.1); color: #fff;
  border: 2px solid rgba(255,255,255,.45);
  padding: 16px 36px; border-radius: 10px; font-size: 1rem; font-weight: 700;
  backdrop-filter: blur(6px);
  transition: border-color .2s, background .2s;
}
.btn-hero-outline:hover { border-color: rgba(255,255,255,.85); background: rgba(255,255,255,.18); }

/* ===========================================
   FEATURE BAR
   =========================================== */
#feature-bar { background: var(--teal); padding: 0; }
.feature-bar-inner { display: flex; }
.feature-item {
  flex: 1; padding: 24px 20px; text-align: center; color: #fff;
  border-right: 1px solid rgba(255,255,255,.15);
  transition: background .2s;
}
.feature-item:last-child { border-right: none; }
.feature-item:hover { background: var(--teal-d); }
.feature-icon { font-size: 1.8rem; margin-bottom: 8px; }
.feature-title { font-size: .95rem; font-weight: 800; display: block; }
.feature-desc  { font-size: .75rem; opacity: .8; }

/* ===========================================
   BENTO 갤러리
   =========================================== */
#gallery { background: var(--bg); }

.bento-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  grid-template-rows: auto;
  gap: 12px;
  max-height: 680px;
}
.bento-main {
  grid-row: span 2;
  position: relative; overflow: hidden; border-radius: var(--radius);
  cursor: pointer;
}
.bento-main img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .4s; }
.bento-main:hover img { transform: scale(1.04); }
.bento-sm {
  position: relative; overflow: hidden; border-radius: var(--radius); cursor: pointer;
}
.bento-sm img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .4s; aspect-ratio: 4/3; }
.bento-sm:hover img { transform: scale(1.06); }
.bento-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.5) 0%, transparent 50%);
  display: flex; align-items: flex-end;
  padding: 20px; opacity: 0; transition: opacity .3s;
}
.bento-main:hover .bento-overlay,
.bento-sm:hover .bento-overlay { opacity: 1; }
.bento-overlay span { color: #fff; font-size: .88rem; font-weight: 700; }
.bento-badge {
  position: absolute; top: 14px; left: 14px;
  background: var(--teal); color: #fff;
  font-size: .7rem; font-weight: 800; letter-spacing: .06em;
  padding: 4px 12px; border-radius: 50px;
}
@media(max-width: 640px) {
  .bento-grid { grid-template-columns: 1fr; max-height: none; }
  .bento-main { grid-row: span 1; }
  .bento-main img { aspect-ratio: 16/9; height: auto; }
}

/* ===========================================
   LIGHTBOX
   =========================================== */
.lightbox {
  display: none; position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,.93);
  flex-direction: column; align-items: center; justify-content: center;
}
.lightbox.open { display: flex; }
.lb-main {
  position: relative; display: flex; align-items: center; justify-content: center;
  width: 100%; flex: 1; min-height: 0; padding: 0 60px;
}
.lb-main img { max-width: 100%; max-height: 80vh; object-fit: contain; border-radius: 6px; display: block; }
.lb-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,.15); border: none; color: #fff;
  width: 44px; height: 44px; border-radius: 50%; font-size: 1.3rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background .2s;
}
.lb-arrow:hover { background: rgba(255,255,255,.35); }
.lb-prev { left: 10px; }
.lb-next { right: 10px; }
.lb-close {
  position: fixed; top: 16px; right: 20px;
  background: none; border: none; color: #fff;
  font-size: 2rem; cursor: pointer; z-index: 10000;
}
.lb-footer {
  width: 100%; padding: 10px 16px 16px;
  display: flex; align-items: center; justify-content: center; gap: 6px;
  overflow-x: auto; scrollbar-width: none;
}
.lb-footer::-webkit-scrollbar { display: none; }
.lb-dot {
  flex: 0 0 64px; aspect-ratio: 4/3; overflow: hidden; border-radius: 4px;
  cursor: pointer; opacity: .45; border: 2px solid transparent; transition: opacity .2s, border-color .2s;
}
.lb-dot.active { opacity: 1; border-color: #fff; }
.lb-dot img { width: 100%; height: 100%; object-fit: cover; display: block; pointer-events: none; }
.lb-vid { display: none; max-width: 100%; max-height: 80vh; border-radius: 6px; }
.lb-counter { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.7); font-size: .85rem; }

/* ===========================================
   SERVICES — 2×2 카드
   =========================================== */
#services { background: var(--white); }

.svc-2x2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.svc-block {
  border-radius: var(--radius); padding: 36px 32px;
  border: 1.5px solid var(--border);
  transition: border-color .25s, box-shadow .25s, transform .25s;
  position: relative; overflow: hidden;
}
.svc-block::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 4px; height: 100%; background: var(--teal);
  transform: scaleY(0); transform-origin: top; transition: transform .3s;
}
.svc-block:hover { border-color: var(--teal); box-shadow: var(--shadow); transform: translateY(-4px); }
.svc-block:hover::before { transform: scaleY(1); }
.svc-block-icon { font-size: 2.4rem; margin-bottom: 18px; }
.svc-block h3 { font-size: 1.18rem; font-weight: 800; margin-bottom: 10px; color: var(--text); }
.svc-block p  { color: var(--muted); font-size: .9rem; line-height: 1.75; margin-bottom: 18px; }
.svc-checklist { display: flex; flex-direction: column; gap: 7px; }
.svc-checklist li { display: flex; align-items: center; gap: 9px; font-size: .85rem; color: var(--text); }
.svc-checklist li::before { content: '✓'; color: var(--teal); font-weight: 900; flex-shrink: 0; }

/* ===========================================
   WHY / 선택 이유
   =========================================== */
#why { background: var(--navy); color: #fff; }
#why .section-head .label { background: rgba(13,148,136,.25); color: #5eead4; }
#why .section-head h2 { color: #fff; }
#why .section-head h2 em { color: #5eead4; }
#why .section-head p { color: rgba(255,255,255,.65); }

.why-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why-card {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius); padding: 30px 24px;
  transition: background .25s, border-color .25s;
}
.why-card:hover { background: rgba(13,148,136,.2); border-color: rgba(13,148,136,.5); }
.why-num { font-size: 2.5rem; font-weight: 900; color: rgba(94,234,212,.3); margin-bottom: 12px; line-height: 1; }
.why-card h4 { font-size: 1rem; font-weight: 800; color: #fff; margin-bottom: 10px; }
.why-card p  { font-size: .85rem; color: rgba(255,255,255,.65); line-height: 1.7; }

/* ===========================================
   PROCESS — 수평 타임라인
   =========================================== */
#process { background: var(--bg); }

.process-track { display: grid; grid-template-columns: repeat(4, 1fr); position: relative; gap: 0; }
.process-track::before {
  content: ''; position: absolute;
  top: 34px; left: 12.5%; right: 12.5%; height: 2px;
  background: linear-gradient(to right, var(--teal), #5eead4);
}
.proc-step { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 0 16px; position: relative; z-index: 1; }
.proc-num {
  width: 68px; height: 68px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--teal);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; font-weight: 900; color: var(--teal);
  margin-bottom: 20px; box-shadow: 0 4px 16px rgba(13,148,136,.2);
  transition: background .25s, color .25s;
}
.proc-step:hover .proc-num { background: var(--teal); color: #fff; }
.proc-step h4 { font-size: .98rem; font-weight: 800; margin-bottom: 8px; }
.proc-step p  { font-size: .82rem; color: var(--muted); line-height: 1.6; }

/* ===========================================
   REVIEWS
   =========================================== */
#reviews { background: var(--white); }

.review-layout { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: start; }
.review-featured {
  background: var(--teal); color: #fff;
  border-radius: var(--radius); padding: 44px 40px; position: relative; overflow: hidden;
}
.review-featured::before {
  content: '\201C'; position: absolute; top: -10px; left: 24px;
  font-size: 8rem; font-weight: 900; color: rgba(255,255,255,.12); line-height: 1;
}
.rf-text { font-size: 1.05rem; line-height: 1.85; margin-bottom: 28px; position: relative; z-index: 1; }
.rf-meta { display: flex; align-items: center; gap: 14px; }
.rf-avatar {
  width: 48px; height: 48px; border-radius: 50%;
  background: rgba(255,255,255,.2); border: 2px solid rgba(255,255,255,.5);
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 1.1rem;
}
.rf-info strong { display: block; font-weight: 800; }
.rf-info span   { font-size: .8rem; opacity: .8; }
.rf-stars { margin-top: 4px; color: var(--amber); letter-spacing: 2px; }

.review-list { display: flex; flex-direction: column; gap: 16px; }
.review-mini {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 12px; padding: 22px 24px;
  transition: border-color .2s, box-shadow .2s;
}
.review-mini:hover { border-color: var(--teal); box-shadow: 0 4px 16px rgba(13,148,136,.1); }
.review-mini-stars { color: var(--amber); font-size: .85rem; letter-spacing: 2px; margin-bottom: 8px; }
.review-mini p { font-size: .88rem; color: #374151; line-height: 1.7; margin-bottom: 14px; }
.review-mini-meta { display: flex; align-items: center; gap: 10px; }
.review-mini-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, var(--teal) 0%, #5eead4 100%);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .85rem; color: #fff; flex-shrink: 0;
}
.review-mini-info strong { display: block; font-size: .85rem; font-weight: 700; }
.review-mini-info span   { font-size: .75rem; color: var(--muted); }

/* ===========================================
   Q&A
   =========================================== */
#qna { background: var(--bg); }

.qna-2col { display: grid; grid-template-columns: 280px 1fr; gap: 56px; align-items: start; }
.qna-col-head { position: sticky; top: 88px; }
.qna-col-head .label { display: inline-block; background: var(--teal-l); color: var(--teal); font-size: .73rem; font-weight: 800; letter-spacing: .14em; padding: 5px 16px; border-radius: 40px; margin-bottom: 14px; }
.qna-col-head h2 { font-size: 1.7rem; font-weight: 900; line-height: 1.35; margin-bottom: 12px; }
.qna-col-head h2 em { color: var(--teal); font-style: normal; }
.qna-col-head p { font-size: .88rem; color: var(--muted); line-height: 1.75; margin-bottom: 24px; }
.qna-cta-btn {
  display: inline-block; background: var(--teal); color: #fff;
  padding: 11px 22px; border-radius: 8px; font-size: .88rem; font-weight: 700;
  transition: background .2s;
}
.qna-cta-btn:hover { background: var(--teal-d); }

.qna-items { display: flex; flex-direction: column; gap: 10px; }
.qna-item { background: var(--white); border: 1.5px solid var(--border); border-radius: 12px; overflow: hidden; transition: border-color .2s; }
.qna-item.open { border-color: var(--teal); }
.qna-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  gap: 14px; padding: 20px 22px;
  background: none; border: none; cursor: pointer; text-align: left;
  font-size: .96rem; font-weight: 700; color: var(--text);
}
.qna-q:hover { background: var(--teal-l); }
.qna-icon {
  flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%;
  background: var(--teal); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; line-height: 1; transition: transform .3s;
}
.qna-item.open .qna-icon { transform: rotate(45deg); }
.qna-a { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .35s ease; padding: 0 22px; }
.qna-item.open .qna-a { max-height: 280px; padding: 0 22px 20px; }
.qna-a p { color: var(--muted); line-height: 1.8; font-size: .92rem; }
.qna-item.qna-hidden { display: none; }
.qna-more-wrap { text-align: center; margin-top: 20px; }
#btnQnaMore {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 28px; border-radius: 8px;
  border: 2px solid var(--teal); background: none;
  color: var(--teal); font-size: .92rem; font-weight: 700;
  cursor: pointer; transition: background .2s, color .2s;
}
#btnQnaMore:hover { background: var(--teal); color: #fff; }
#qnaMoreArrow { transition: transform .3s; display: inline-block; }
#btnQnaMore.open #qnaMoreArrow { transform: rotate(180deg); }

/* ===========================================
   CTA BAND — 인라인 상담 폼
   =========================================== */
#cta-band { background: linear-gradient(135deg, #0f172a 0%, #0f4c45 100%); padding: 88px 0; color: #fff; }
.cta-inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: center; }
.cta-text-col .cta-badge {
  display: inline-block; background: rgba(13,148,136,.3); color: #5eead4;
  font-size: .72rem; font-weight: 800; letter-spacing: .12em;
  padding: 5px 16px; border-radius: 50px; margin-bottom: 20px;
}
.cta-text-col h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 900; line-height: 1.3; margin-bottom: 16px; }
.cta-text-col h2 em { color: #5eead4; font-style: normal; }
.cta-text-col p { opacity: .78; line-height: 1.8; margin-bottom: 28px; font-size: .95rem; }
.cta-tel-row { display: flex; align-items: center; gap: 12px; }
.cta-tel-row a { font-size: 1.5rem; font-weight: 900; color: #5eead4; transition: color .2s; }
.cta-tel-row a:hover { color: #fff; }
.cta-tel-row span { font-size: .8rem; opacity: .65; }

.cta-form-box { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); padding: 36px 32px; }
.cta-form-box h3 { color: #fff; font-size: 1.05rem; font-weight: 800; margin-bottom: 22px; }
.cta-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.cf-group { margin-bottom: 14px; }
.cf-group label { display: block; font-size: .75rem; font-weight: 700; color: rgba(255,255,255,.7); margin-bottom: 6px; }
.cf-group input,
.cf-group select,
.cf-group textarea {
  width: 100%; padding: 11px 14px;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18);
  border-radius: 8px; color: #fff; font-size: .9rem; font-family: inherit;
  transition: border-color .2s; box-sizing: border-box;
}
.cf-group input::placeholder,
.cf-group textarea::placeholder { color: rgba(255,255,255,.35); }
.cf-group input:focus,
.cf-group select:focus,
.cf-group textarea:focus { outline: none; border-color: #5eead4; }
.cf-group select option { background: #0f172a; color: #fff; }
.cf-group textarea { resize: vertical; min-height: 80px; }
.btn-cta-submit {
  width: 100%; padding: 14px; background: var(--teal); color: #fff;
  font-size: .98rem; font-weight: 800; border: none; border-radius: 8px;
  cursor: pointer; transition: background .2s, transform .15s; margin-top: 4px;
}
.btn-cta-submit:hover { background: var(--teal-d); transform: translateY(-1px); }
.cta-form-note { font-size: .73rem; color: rgba(255,255,255,.45); text-align: center; margin-top: 10px; }

.cta-alert { padding: 14px 18px; border-radius: 8px; margin-bottom: 18px; font-size: .88rem; font-weight: 600; }
.cta-alert.success { background: rgba(52,211,153,.2); color: #6ee7b7; border: 1px solid rgba(52,211,153,.3); }
.cta-alert.error   { background: rgba(248,113,113,.15); color: #fca5a5; border: 1px solid rgba(248,113,113,.25); }

/* ===========================================
   FOOTER
   =========================================== */
#site-footer { background: #020617; color: rgba(255,255,255,.75); padding: 56px 0 28px; }
.footer-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 48px; padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,.08); margin-bottom: 24px;
}
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo .logo-mark { width: 36px; height: 36px; font-size: 1rem; }
.footer-logo strong { font-size: 1.05rem; color: #fff; font-weight: 900; }
.footer-desc { font-size: .85rem; line-height: 1.75; opacity: .65; margin-bottom: 20px; }
.footer-contact a { display: flex; align-items: center; gap: 8px; font-size: .88rem; margin-bottom: 8px; color: rgba(255,255,255,.7); transition: color .2s; }
.footer-contact a:hover { color: #5eead4; }
.footer-nav h5 { font-size: .78rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.4); margin-bottom: 16px; }
.footer-nav ul li { margin-bottom: 10px; }
.footer-nav ul a  { font-size: .87rem; color: rgba(255,255,255,.65); transition: color .2s; }
.footer-nav ul a:hover { color: #5eead4; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 10px; font-size: .78rem; color: rgba(255,255,255,.35);
}
.bizinfo { display: flex; gap: 18px; flex-wrap: wrap; }

/* ===========================================
   FLOATING BUTTONS
   =========================================== */
.float-contact { position: fixed; right: 24px; bottom: 32px; display: flex; flex-direction: column; gap: 12px; z-index: 800; }
.float-btn {
  width: 54px; height: 54px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; box-shadow: 0 4px 20px rgba(0,0,0,.25);
  transition: transform .2s, box-shadow .2s; cursor: pointer;
}
.float-btn:hover { transform: translateY(-3px) scale(1.08); box-shadow: 0 8px 28px rgba(0,0,0,.3); }
.float-call { background: var(--teal); color: #fff; }
.float-top  { background: #374151; color: #fff; font-size: 1rem; }

/* ===========================================
   MOBILE NAV
   =========================================== */
.mobile-nav { display: none; position: fixed; inset: 0; z-index: 999; background: rgba(0,0,0,.5); }
.mobile-nav.open { display: flex; }
.mobile-nav-panel {
  background: var(--white); width: 285px; height: 100%;
  padding: 32px 24px; display: flex; flex-direction: column; gap: 6px;
  box-shadow: 4px 0 28px rgba(0,0,0,.25);
}
.mobile-nav-panel .close-btn { align-self: flex-end; background: none; border: none; font-size: 1.6rem; cursor: pointer; }
.mobile-nav-panel a { display: block; padding: 13px 0; font-size: 1rem; font-weight: 600; border-bottom: 1px solid var(--border); color: var(--text); }
.mobile-nav-panel .tel-row { margin-top: 20px; background: var(--teal-l); border-radius: 10px; padding: 14px 16px; text-align: center; }
.mobile-nav-panel .tel-row strong { display: block; color: var(--teal); font-size: 1.05rem; }
.mobile-nav-panel .tel-row span   { font-size: .77rem; color: var(--muted); }

/* ===========================================
   RESPONSIVE
   =========================================== */
@media(max-width: 1024px) {
  .why-cards { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
  .cta-inner { gap: 40px; }
}
@media(max-width: 860px) {
  .svc-2x2 { grid-template-columns: 1fr; }
  .review-layout { grid-template-columns: 1fr; }
  .qna-2col { grid-template-columns: 1fr; }
  .qna-col-head { position: static; }
  .cta-inner { grid-template-columns: 1fr; }
  .cta-row { grid-template-columns: 1fr; }
  .process-track { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .process-track::before { display: none; }
}
@media(max-width: 768px) {
  .section { padding: 60px 0; }
  .nav-menu, .header-cta .btn-consult { display: none; }
  .hamburger { display: block; }
  #hero { min-height: 80vh; }
  .hero-content h1 { font-size: 2rem; }
  .feature-bar-inner { flex-wrap: wrap; }
  .feature-item { flex: 1 1 50%; border-right: none; border-bottom: 1px solid rgba(255,255,255,.15); }
  .why-cards { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }
}
@media(max-width: 480px) {
  .feature-item { flex: 1 1 100%; }
  .process-track { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .btn-hero-primary, .btn-hero-outline { text-align: center; }
}