/* ============================================================
   style.css — 알린다몰 전역 스타일시트
   공통 패턴 한 번 정의 → 전체 재사용
   ============================================================ */

/* --- Design Tokens --- */
:root {
  --primary:    #0D2B5E;
  --accent:     #1565C0;
  --accent-lt:  #2196F3;
  --surface:    #FFFFFF;
  --bg:         #F4F7FB;
  --bg-dark:    #0A1F44;
  --border:     #D0DEF0;
  --text:       #0D2B5E;
  --text-muted: #5A7BA8;
  --gold:       #C9A84C;
  --radius:     12px;
  --shadow:     0 4px 24px rgba(0,0,0,.10);
  --shadow-lg:  0 8px 40px rgba(0,0,0,.14);
  --transition: .3s cubic-bezier(.4,0,.2,1);
  --header-h:   72px;
  --max-w:      1200px;
  --floating-h: 56px;
}

/* --- Reset & Base --- */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; scroll-padding-top:var(--header-h); -webkit-text-size-adjust:100%; }
body {
  font-family:'Pretendard Variable',Pretendard,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  color:var(--text); background:var(--bg);
  line-height:1.7; font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img { max-width:100%; height:auto; display:block; }
a { color:inherit; text-decoration:none; }
button { font:inherit; cursor:pointer; border:none; background:none; }
ul,ol { list-style:none; }

/* --- Typography --- */
.heading-xl { font-size:clamp(2rem,5vw,3.5rem); font-weight:800; line-height:1.2; letter-spacing:-.02em; }
.heading-lg { font-size:clamp(1.75rem,4vw,2.5rem); font-weight:700; line-height:1.25; letter-spacing:-.015em; }
.heading-md { font-size:clamp(1.25rem,3vw,1.5rem); font-weight:600; line-height:1.35; }
.heading-sm { font-size:1.125rem; font-weight:600; line-height:1.4; }
.text-body   { font-size:1rem; line-height:1.7; }
.text-small  { font-size:.875rem; line-height:1.6; color:var(--text-muted); }
.text-center { text-align:center; }
.text-white  { color:#fff; }

/* --- Section Wrapper --- */
.section {
  padding:clamp(60px,10vw,100px) 24px;
  max-width:var(--max-w);
  margin:0 auto;
}
.section-full {
  padding:clamp(60px,10vw,100px) 24px;
  width:100%;
}
.section--dark { background:var(--bg-dark); color:#fff; }
.section-label {
  display:inline-block; font-size:.75rem; font-weight:700;
  text-transform:uppercase; letter-spacing:.12em;
  color:var(--accent); margin-bottom:8px;
}
.section-title { margin-bottom:16px; }
.section-desc { max-width:640px; margin:0 auto 48px; }

/* --- Buttons --- */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 32px; border-radius:50px;
  font-size:.9375rem; font-weight:600; line-height:1;
  transition:all var(--transition);
  white-space:nowrap; position:relative; overflow:hidden;
}
.btn--primary {
  background:var(--accent); color:#fff;
  box-shadow:0 4px 16px rgba(21,101,192,.3);
}
.btn--primary:hover {
  background:var(--accent-lt);
  box-shadow:0 6px 24px rgba(33,150,243,.35);
  transform:translateY(-2px);
}
.btn--outline {
  border:2px solid var(--accent); color:var(--accent);
  background:transparent;
}
.btn--outline:hover {
  background:var(--accent); color:#fff;
  transform:translateY(-2px);
}
.btn--white {
  background:#fff; color:var(--primary);
}
.btn--white:hover {
  background:rgba(255,255,255,.9);
  transform:translateY(-2px);
}
.btn--sm { padding:10px 24px; font-size:.8125rem; }
.btn--icon {
  width:48px; height:48px; padding:0; border-radius:50%;
  display:inline-flex; align-items:center; justify-content:center;
}

/* --- Card System --- */
.card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all var(--transition);
}
.card:hover {
  box-shadow:var(--shadow-lg);
  transform:translateY(-4px);
  border-color:var(--accent);
}
.card-img {
  width:100%; aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .5s cubic-bezier(.4,0,.2,1);
}
.card:hover .card-img { transform:scale(1.06); }
.card-img-wrap { overflow:hidden; position:relative; }
.card-body { padding:24px; }
.card-icon {
  width:48px; height:48px; border-radius:12px;
  display:flex; align-items:center; justify-content:center;
  font-size:1.5rem; margin-bottom:16px;
  background:rgba(21,101,192,.08);
}
.card-title { margin-bottom:8px; }
.card-desc { color:var(--text-muted); font-size:.9375rem; line-height:1.6; white-space:pre-line; }

/* --- Image Placeholder --- */
.img-placeholder {
  width:100%; height:100%;
  display:flex; align-items:center; justify-content:center;
  background:linear-gradient(135deg,var(--bg) 0%,var(--border) 100%);
  color:var(--accent); font-size:2.5rem;
}
.img-placeholder--dark {
  background:linear-gradient(135deg,rgba(21,101,192,.15) 0%,rgba(0,0,0,.2) 100%);
  color:var(--accent-lt);
}

/* --- Card Grid --- */
.card-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:24px;
}

/* --- Header / Nav --- */
.header {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  height:var(--header-h);
  display:flex; align-items:center; justify-content:center;
  transition:all var(--transition);
  background:rgba(255,255,255,0);
}
.header.scrolled {
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px);
  box-shadow:0 1px 16px rgba(0,0,0,.06);
}
.header-inner {
  width:100%; max-width:var(--max-w);
  padding:0 24px;
  display:flex; align-items:center; justify-content:space-between;
}
.logo { display:flex; align-items:center; }
.logo-img {
  height:32px; width:auto;
  filter:brightness(0) invert(1);
  transition:filter var(--transition);
}
.header.scrolled .logo-img { filter:none; }
.footer-logo-img { height:28px; width:auto; filter:brightness(0) invert(1); }
.nav { display:flex; align-items:center; gap:32px; }
.nav-link {
  font-size:.9375rem; font-weight:500;
  color:rgba(255,255,255,.9); position:relative;
  transition:color var(--transition);
}
.nav-link::after {
  content:''; position:absolute; bottom:-4px; left:0;
  width:0; height:2px; background:#fff;
  transition:all var(--transition);
}
.nav-link:hover { color:#fff; }
.nav-link:hover::after { width:100%; }
.nav-link.active { color:#fff; }
.nav-link.active::after { width:100%; }
.header.scrolled .nav-link { color:var(--text); }
.header.scrolled .nav-link::after { background:var(--accent); }
.header.scrolled .nav-link:hover { color:var(--accent); }
.header.scrolled .nav-link.active { color:var(--accent); }
.header-phone {
  display:flex; align-items:center; gap:6px;
  font-size:.875rem; font-weight:600; color:#fff;
  transition:color var(--transition);
}
.header.scrolled .header-phone { color:var(--accent); }
.hamburger {
  display:none; flex-direction:column; gap:5px;
  width:28px; padding:4px 0;
}
.hamburger span {
  display:block; height:2.5px; background:#fff;
  border-radius:2px; transition:all var(--transition);
}
.header.scrolled .hamburger span { background:var(--primary); }
.hamburger.active span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity:0; }
.hamburger.active span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }

/* Mobile Nav Overlay */
.mobile-nav {
  display:none; position:fixed; top:var(--header-h); left:0; right:0; bottom:0;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(20px);
  z-index:999; padding:40px 24px;
  flex-direction:column; align-items:center; gap:24px;
  opacity:0; transform:translateY(-10px);
  transition:all var(--transition);
}
.mobile-nav.open { display:flex; opacity:1; transform:translateY(0); }
.mobile-nav .nav-link { font-size:1.25rem; }

/* --- Hero Section --- */
.hero {
  position:relative; height:100vh; min-height:600px; max-height:900px;
  overflow:hidden;
}
.hero-slide {
  position:absolute; inset:0;
  opacity:0; transition:opacity 1s ease;
}
.hero-slide.active { opacity:1; }
.hero-slide-bg {
  position:absolute; inset:0;
  background-size:cover; background-position:center;
  animation:kenBurns 12s ease infinite alternate;
}
.hero-slide.active .hero-slide-bg { animation-play-state:running; }
.hero-slide:not(.active) .hero-slide-bg { animation-play-state:paused; }
@keyframes kenBurns {
  0%   { transform:scale(1); }
  100% { transform:scale(1.08); }
}
.hero-overlay {
  position:absolute; inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,.45) 0%,rgba(0,0,0,.65) 100%);
}
.hero-content {
  position:relative; z-index:2;
  height:100%; display:flex; flex-direction:column;
  justify-content:center; align-items:center;
  text-align:center; padding:0 24px;
  max-width:800px; margin:0 auto;
}
.hero-title {
  font-size:clamp(2rem,6vw,3.75rem); font-weight:800;
  color:#fff; line-height:1.15; letter-spacing:-.02em;
  margin-bottom:20px; white-space:pre-line;
  text-shadow:0 2px 24px rgba(0,0,0,.2);
}
.hero-subtitle {
  font-size:clamp(1rem,2.5vw,1.25rem);
  color:rgba(255,255,255,.85); margin-bottom:36px;
  font-weight:400;
}
.hero-cta { display:flex; gap:16px; flex-wrap:wrap; justify-content:center; }
.hero-dots {
  position:absolute; bottom:32px; left:50%; transform:translateX(-50%);
  z-index:3; display:flex; gap:10px;
}
.hero-dot {
  width:10px; height:10px; border-radius:50%;
  background:rgba(255,255,255,.4); border:none;
  transition:all var(--transition); cursor:pointer;
}
.hero-dot.active { background:#fff; width:28px; border-radius:5px; }
.hero-scroll-hint {
  position:absolute; bottom:80px; left:50%; transform:translateX(-50%);
  z-index:3; color:rgba(255,255,255,.6);
  font-size:.75rem; text-align:center;
  animation:floatDown 2s ease infinite;
}
.hero-scroll-hint svg { display:block; margin:6px auto 0; }
@keyframes floatDown {
  0%,100% { transform:translateX(-50%) translateY(0); }
  50%     { transform:translateX(-50%) translateY(8px); }
}

/* --- Services Section --- */
.services-bg { background:var(--bg); }
.service-card .card-img-wrap { background:var(--bg); }

/* --- What We Do (Iceberg) Section --- */
.iceberg-below {
  background:linear-gradient(rgba(0,0,0,.82),rgba(0,0,0,.88)), url('../img/bg/bg_whatwedo.webp') center/cover no-repeat;
  padding:0 0 clamp(60px,10vw,100px);
}

/* 카드 그리드 3열 */
.iceberg-grid {
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:20px;
}
.iceberg-card {
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);
  padding:28px 24px;
  transition:all var(--transition);
  position:relative;
  overflow:hidden;
}
.iceberg-card:hover {
  background:rgba(255,255,255,.10);
  border-color:rgba(33,150,243,.3);
  transform:translateY(-4px);
}
.iceberg-card-head {
  display:flex; align-items:center; gap:14px; margin-bottom:12px;
}
.iceberg-card-icon {
  width:44px; height:44px; border-radius:10px;
  background:rgba(33,150,243,.12);
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0; color:var(--accent-lt);
}
.iceberg-card-num {
  font-size:.75rem; font-weight:700; color:rgba(255,255,255,.25);
  letter-spacing:.08em; position:absolute; top:12px; right:16px;
}
.iceberg-card-title {
  font-size:1rem; font-weight:600; color:#fff;
}
.iceberg-card-desc {
  font-size:.8125rem; color:rgba(255,255,255,.5); line-height:1.6;
}

@media (max-width:768px) {
  .iceberg-grid { grid-template-columns:repeat(2, 1fr); gap:14px; }
  .iceberg-card { padding:20px 16px; }
}
@media (max-width:480px) {
  .iceberg-grid { grid-template-columns:1fr; }
}

/* --- Brand '새기다' Section --- */
.brand-section {
  background:var(--bg-dark);
  position:relative; overflow:hidden;
}
.brand-section::before {
  content:''; position:absolute;
  width:400px; height:400px; border-radius:50%;
  background:radial-gradient(circle,rgba(21,101,192,.15),transparent 70%);
  top:-100px; right:-100px;
}
.brand-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:24px;
}
.brand-card {
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);
  padding:32px; transition:all var(--transition);
}
.brand-card:hover {
  background:rgba(255,255,255,.1);
  border-color:rgba(33,150,243,.3);
  transform:translateY(-4px);
}
.brand-card .card-icon {
  background:rgba(33,150,243,.15);
}
.brand-card .card-desc { color:rgba(255,255,255,.7); }

/* --- Client Logo Marquee --- */
.marquee-section { padding:64px 0 72px; background:var(--bg); }
.marquee-cta { display:flex; justify-content:center; gap:16px; margin-top:32px; flex-wrap:wrap; }
.marquee-wrap { overflow:hidden; margin-top:40px; }
.marquee-track {
  display:flex; align-items:center; gap:100px;
  width:max-content;
  animation:marquee-scroll 32s linear infinite;
}
.marquee-track:hover { animation-play-state:paused; }
.marquee-reverse { animation-direction:reverse; }
.marquee-wrap + .marquee-wrap { margin-top:28px; }
.marquee-track img {
  height:40px; width:auto; opacity:.35;
  filter:grayscale(100%);
  transition:all var(--transition);
}
.marquee-track img:hover { opacity:1; filter:grayscale(0); }
@keyframes marquee-scroll {
  0% { transform:translateX(0); }
  100% { transform:translateX(-50%); }
}

/* --- Process Timeline --- */
.process-bg { background:var(--surface); }
.timeline {
  display:flex; align-items:flex-start; justify-content:center;
  gap:0; position:relative; padding:20px 0;
}
.timeline-step {
  flex:1; max-width:200px; text-align:center;
  position:relative; padding:0 12px;
}
.timeline-icon {
  width:64px; height:64px; border-radius:50%;
  background:var(--accent); color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-size:1.75rem; margin:0 auto 16px;
  position:relative; z-index:2;
  box-shadow:0 4px 16px rgba(21,101,192,.25);
}
.timeline-step:not(:last-child)::after {
  content:''; position:absolute;
  top:32px; left:calc(50% + 32px); right:calc(-50% + 32px);
  height:3px; background:var(--border);
  z-index:1;
}
.timeline-title { font-weight:600; margin-bottom:6px; font-size:.9375rem; }
.timeline-desc { font-size:.8125rem; color:var(--text-muted); white-space:pre-line; line-height:1.5; }
.timeline-num {
  display:inline-flex; align-items:center; justify-content:center;
  width:24px; height:24px; border-radius:50%;
  background:rgba(21,101,192,.1); color:var(--accent);
  font-size:.75rem; font-weight:700; margin-bottom:8px;
}

/* --- Portfolio --- */
.portfolio-bg { background:var(--bg); }
.filter-bar {
  display:flex; gap:8px; justify-content:center;
  margin-bottom:40px; flex-wrap:wrap;
}
.filter-btn {
  padding:10px 24px; border-radius:50px;
  font-size:.875rem; font-weight:600;
  background:var(--surface); color:var(--text-muted);
  border:1px solid var(--border);
  transition:all var(--transition);
}
.filter-btn.active,
.filter-btn:hover {
  background:var(--accent); color:#fff;
  border-color:var(--accent);
}
.portfolio-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:20px;
}
.portfolio-item {
  border-radius:var(--radius); overflow:hidden;
  position:relative; cursor:pointer;
  aspect-ratio:4/3;
  transition:all var(--transition);
}
.portfolio-item img {
  width:100%; height:100%; object-fit:cover;
  transition:transform .5s cubic-bezier(.4,0,.2,1);
}
.portfolio-item:hover img { transform:scale(1.06); }
.portfolio-item-overlay {
  position:absolute; inset:0;
  background:linear-gradient(0deg,rgba(0,0,0,.8) 0%,transparent 60%);
  display:flex; flex-direction:column;
  justify-content:flex-end; padding:20px;
  opacity:0; transition:opacity var(--transition);
}
.portfolio-item:hover .portfolio-item-overlay { opacity:1; }
.portfolio-item-title { color:#fff; font-weight:600; font-size:.9375rem; }
.portfolio-item-desc { color:rgba(255,255,255,.7); font-size:.8125rem; margin-top:4px; }

/* Lightbox */
.lightbox {
  display:none; position:fixed; inset:0; z-index:2000;
  background:rgba(0,0,0,.9); backdrop-filter:blur(8px);
  align-items:center; justify-content:center;
  padding:40px;
}
.lightbox.open { display:flex; }
.lightbox img {
  max-width:90vw; max-height:80vh;
  border-radius:var(--radius);
  box-shadow:var(--shadow-lg);
}
.lightbox-close {
  position:absolute; top:24px; right:24px;
  width:48px; height:48px; border-radius:50%;
  background:rgba(255,255,255,.15); color:#fff;
  font-size:1.5rem; display:flex; align-items:center; justify-content:center;
  transition:all var(--transition);
}
.lightbox-close:hover { background:rgba(255,255,255,.3); }
.lightbox-info {
  position:absolute; bottom:40px; left:50%;
  transform:translateX(-50%);
  text-align:center; color:#fff;
}

/* ============================================================
   REVIEWS — 대화형 말풍선 채팅 스타일
   ============================================================ */
.reviews-bg { background:var(--surface); }

/* X(트위터) 스타일 리뷰 카드 */
.tweet-list {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  align-items:start;
}
.tweet-list .tweet-card:nth-child(3n+2) { transform:translateY(32px); }

.tweet-card {
  background:#fff;
  border:1px solid #e7e7e7;
  border-radius:16px;
  padding:20px;
  box-shadow:0 2px 12px rgba(0,0,0,.07);
  transition:box-shadow var(--transition), transform var(--transition);
}
.tweet-card:hover { box-shadow:0 6px 24px rgba(0,0,0,.13); }

.tweet-header { display:flex; align-items:flex-start; gap:12px; margin-bottom:14px; }
.tweet-avatar {
  width:44px; height:44px; border-radius:50%; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-weight:700; font-size:.9375rem;
}
.tweet-author { flex:1; min-width:0; }
.tweet-name-row { display:flex; align-items:center; gap:4px; }
.tweet-name { font-weight:700; font-size:.9375rem; color:#0f1419; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.tweet-verified { flex-shrink:0; color:#1d9bf0; }
.tweet-handle { font-size:.8125rem; color:#536471; margin-top:1px; }
.tweet-meta { display:flex; align-items:center; gap:8px; flex-shrink:0; }
.tweet-time { font-size:.8125rem; color:#536471; }
.tweet-dots { font-size:1.25rem; color:#536471; line-height:1; cursor:default; }

.tweet-body { font-size:.9375rem; line-height:1.65; color:#0f1419; margin-bottom:16px; word-break:keep-all; }

.tweet-actions {
  display:flex; gap:20px; padding-top:12px;
  border-top:1px solid #eff3f4;
}
.tweet-action {
  display:flex; align-items:center; gap:5px;
  font-size:.8125rem; color:#536471;
  cursor:default;
}
.tweet-action svg { flex-shrink:0; }

/* --- Guide & FAQ --- */
.guide-bg { background:var(--bg); }
.guide-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:20px; margin-bottom:48px;
}
.guide-card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px; text-align:center;
  transition:all var(--transition);
}
.guide-card:hover { box-shadow:var(--shadow); transform:translateY(-2px); }
.guide-card .card-icon { margin:0 auto 16px; }

/* 아코디언 — 섹션 너비(1200px)에 맞춤 */
.accordion { max-width:var(--max-w); margin:0 auto; }
.accordion-item {
  border:1px solid var(--border);
  border-radius:var(--radius);
  margin-bottom:12px; overflow:hidden;
  background:var(--surface);
}
.accordion-header {
  width:100%; padding:20px 24px;
  display:flex; align-items:center; justify-content:space-between;
  font-weight:600; font-size:.9375rem;
  text-align:left; gap:16px;
  transition:all var(--transition);
}
.accordion-header:hover { color:var(--accent); }
.accordion-icon {
  flex-shrink:0; width:24px; height:24px;
  transition:transform var(--transition);
}
.accordion-item.open .accordion-icon { transform:rotate(180deg); }
.accordion-body {
  max-height:0; overflow:hidden;
  transition:max-height .35s cubic-bezier(.4,0,.2,1);
}
.accordion-body-inner {
  padding:0 24px 20px;
  font-size:.9375rem; color:var(--text-muted); line-height:1.7;
}

/* --- Contact / CTA --- */
.contact-section {
  background:linear-gradient(135deg,var(--accent) 0%,var(--bg-dark) 100%);
  color:#fff;
}
.contact-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px; align-items:center;
}
.contact-form {
  display:flex; flex-direction:column; gap:16px;
}
.form-input {
  width:100%; padding:16px 20px;
  border:2px solid rgba(255,255,255,.2);
  border-radius:var(--radius);
  background:rgba(255,255,255,.1);
  color:#fff; font-size:.9375rem;
  transition:all var(--transition);
  backdrop-filter:blur(4px);
}
.form-input::placeholder { color:rgba(255,255,255,.5); }
.form-input:focus {
  outline:none;
  border-color:rgba(255,255,255,.6);
  background:rgba(255,255,255,.15);
}
textarea.form-input { resize:vertical; min-height:120px; font-family:inherit; }
.contact-info-item {
  display:flex; align-items:center; gap:12px;
  font-size:.9375rem; margin-bottom:16px;
}
.contact-info-icon {
  width:40px; height:40px; border-radius:10px;
  background:rgba(255,255,255,.15);
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
}

/* --- Footer --- */
.footer {
  background:var(--bg-dark); color:rgba(255,255,255,.6);
  padding:48px 24px calc(24px + var(--floating-h) + 80px);
}
.footer-inner {
  max-width:var(--max-w); margin:0 auto;
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:40px;
}
.footer-logo {
  font-size:1.25rem; font-weight:800; color:#fff;
  margin-bottom:12px;
}
.footer-logo span { color:var(--accent-lt); }
.footer-desc { font-size:.875rem; line-height:1.7; margin-bottom:16px; }
.footer-heading { color:#fff; font-weight:600; font-size:.9375rem; margin-bottom:16px; }
.footer-link {
  display:block; font-size:.875rem;
  margin-bottom:10px;
  transition:color var(--transition);
}
.footer-link:hover { color:var(--accent-lt); }
.footer-social { display:flex; gap:12px; margin-top:16px; }
.footer-social a {
  width:40px; height:40px; border-radius:10px;
  background:rgba(255,255,255,.08);
  display:flex; align-items:center; justify-content:center;
  transition:all var(--transition); color:rgba(255,255,255,.6);
}
.footer-social a:hover {
  background:var(--accent); color:#fff;
}
.footer-bottom {
  max-width:var(--max-w); margin:0 auto;
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:24px; margin-top:40px;
  display:flex; justify-content:space-between; align-items:center;
  font-size:.8125rem;
}
.footer-biz { font-size:.75rem; line-height:1.8; }

/* ============================================================
   FLOATING BAR — 상품 카테고리 롤아웃 탭 포함
   ============================================================ */
.floating-bar {
  position:fixed; bottom:0; left:0; right:0; z-index:900;
  background:var(--primary);
  transform:translateY(100%);
  transition:transform var(--transition);
  box-shadow:0 -4px 24px rgba(0,0,0,.25);
}
.floating-bar.visible { transform:translateY(0); }

/* 상품 카테고리 롤아웃 탭 */
.float-categories {
  display:flex; align-items:center; justify-content:center;
  gap:0; background:rgba(255,255,255,.06);
  border-bottom:1px solid rgba(255,255,255,.1);
  overflow-x:auto; -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.float-categories::-webkit-scrollbar { display:none; }
.float-cat-btn {
  display:flex; align-items:center; gap:6px;
  padding:10px 16px; font-size:.75rem; font-weight:600;
  color:rgba(255,255,255,.55); white-space:nowrap;
  border:none; background:none;
  transition:all var(--transition);
  border-bottom:2px solid transparent;
}
.float-cat-btn:hover,
.float-cat-btn.active {
  color:#fff;
  border-bottom-color:var(--accent-lt);
  background:rgba(255,255,255,.06);
}
.float-cat-btn svg { flex-shrink:0; }

/* 플로팅바 메인 영역 */
.float-form-row {
  display:flex; align-items:center; justify-content:center;
  gap:10px; padding:10px 24px;
  height:var(--floating-h);
}
.float-selected {
  display:flex; align-items:center; gap:4px;
  padding:8px 14px; border-radius:8px;
  background:rgba(33,150,243,.2); color:var(--accent-lt);
  font-size:.8125rem; font-weight:600;
  white-space:nowrap;
}
.float-selected svg { flex-shrink:0; }
.floating-bar input {
  padding:10px 16px; border-radius:8px; border:none;
  font-size:.875rem; width:120px; min-width:0;
  background:rgba(255,255,255,.12); color:#fff;
}
.floating-bar input#floatMessage { width:200px; }
.floating-bar input::placeholder { color:rgba(255,255,255,.5); }
.floating-bar .btn { padding:10px 24px; font-size:.875rem; }

/* Naver Smartstore Floating */
.naver-float {
  position:fixed; bottom:calc(var(--floating-h) + 152px); right:24px; z-index:900;
  width:60px; height:60px; border-radius:50%;
  background:#03C75A; color:#fff;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 4px 20px rgba(0,0,0,.15);
  transition:all var(--transition);
  cursor:pointer;
}
.naver-float:hover { transform:scale(1.1) translateY(-2px); }
.naver-tooltip {
  position:absolute; right:72px; top:50%; transform:translateY(-50%);
  background:var(--surface); color:var(--text);
  padding:8px 16px; border-radius:8px;
  font-size:.8125rem; font-weight:600;
  white-space:nowrap;
  box-shadow:var(--shadow);
  opacity:0; pointer-events:none;
  transition:opacity var(--transition);
}
.naver-float:hover .naver-tooltip { opacity:1; }

.kakao-float {
  position:fixed; bottom:calc(var(--floating-h) + 80px); right:24px; z-index:900;
  width:60px; height:60px; border-radius:50%;
  background:#FEE500; color:#3C1E1E;
  display:flex; align-items:center; justify-content:center;
  font-size:1.5rem; font-weight:800;
  box-shadow:0 4px 20px rgba(0,0,0,.15);
  transition:all var(--transition);
  cursor:pointer;
}
.kakao-float:hover { transform:scale(1.1) translateY(-2px); }
.kakao-tooltip {
  position:absolute; right:72px; top:50%; transform:translateY(-50%);
  background:var(--surface); color:var(--text);
  padding:8px 16px; border-radius:8px;
  font-size:.8125rem; font-weight:600;
  white-space:nowrap;
  box-shadow:var(--shadow);
  opacity:0; pointer-events:none;
  transition:opacity var(--transition);
}
.kakao-float:hover .kakao-tooltip { opacity:1; }

.cart-float {
  position:fixed; bottom:calc(var(--floating-h) + 224px); right:24px; z-index:900;
  width:60px; height:60px; border-radius:50%;
  background:var(--accent); color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-size:1.5rem;
  box-shadow:0 4px 20px rgba(0,0,0,.15);
  transition:all var(--transition);
  cursor:pointer; text-decoration:none;
}
.cart-float:hover { transform:scale(1.1) translateY(-2px); }
.cart-float:hover .cart-tooltip { opacity:1; }
.cart-tooltip {
  position:absolute; right:72px; top:50%; transform:translateY(-50%);
  background:var(--surface); color:var(--text);
  padding:8px 16px; border-radius:8px;
  font-size:.8125rem; font-weight:600;
  white-space:nowrap;
  box-shadow:var(--shadow);
  opacity:0; pointer-events:none;
  transition:opacity var(--transition);
}

/* --- Scroll Animation --- */
.fade-up {
  opacity:0; transform:translateY(30px);
  transition:opacity .6s cubic-bezier(.4,0,.2,1), transform .6s cubic-bezier(.4,0,.2,1);
}
.fade-up.visible { opacity:1; transform:translateY(0); }
.fade-up-delay-1 { transition-delay:.1s; }
.fade-up-delay-2 { transition-delay:.2s; }
.fade-up-delay-3 { transition-delay:.3s; }

/* ============================================================
   RESPONSIVE — Mobile First Overrides
   ============================================================ */

@media (max-width:1024px) {
  .card-grid { grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); }
  .contact-grid { grid-template-columns:1fr; }
  .footer-inner { grid-template-columns:1fr 1fr; }
  .tweet-list { grid-template-columns:repeat(2,1fr); }
}

@media (max-width:768px) {
  :root { --header-h:64px; --floating-h:48px; }

  /* Nav → Hamburger */
  .nav, .header-phone { display:none; }
  .hamburger { display:flex; }

  /* Hero */
  .hero { min-height:520px; max-height:700px; }
  .hero-title { font-size:clamp(1.5rem,7vw,2.25rem); }
  .hero-cta { flex-direction:column; align-items:center; }
  .hero-cta .btn { width:100%; max-width:300px; }

  /* Timeline → Vertical Center */
  .timeline { flex-direction:column; align-items:center; padding-left:0; }
  .timeline-step { text-align:center; max-width:280px; padding:0 0 36px; }
  .timeline-step:not(:last-child)::after {
    display:none;
  }
  .timeline-icon { margin:0 auto 12px; }

  /* Reviews tweet */
  .tweet-list { grid-template-columns:1fr; }
  .tweet-list .tweet-card:nth-child(3n+2) { transform:none; }
  .tweet-list .tweet-card:nth-child(n+3) { display:none; }

  /* Portfolio */
  .portfolio-grid { grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); }

  /* Footer */
  .footer-inner { grid-template-columns:1fr; gap:24px; }
  .footer-bottom { flex-direction:column; gap:8px; text-align:center; }
  .footer { padding:40px 20px 32px; }

  /* Floating */
  .floating-bar { display:none !important; }
  .naver-float { display:none; }
  .kakao-float { display:flex; bottom:24px; right:16px; width:52px; height:52px; }
  .kakao-tooltip { display:none; }

  /* Reviews — 모바일 3개만 */
  .chat-card:nth-child(n+4) { display:none; }

  /* Services — 모바일 3개만 */
  .card-grid .service-card:nth-child(n+4) { display:none; }

  /* WHAT WE DO — 모바일 3개만 */
  .iceberg-grid .iceberg-card:nth-child(n+4) { display:none; }

  /* Portfolio — 모바일 4개만 + 필터바 숨김 */
  .portfolio-grid .portfolio-item:nth-child(n+5) { display:none; }
  .filter-bar { display:none; }

  /* FAQ — 모바일 3개만 */
  .accordion-item:nth-child(n+4) { display:none; }

  /* Float form */
  .float-form-row { padding:8px 12px; gap:6px; }
  .floating-bar input { width:90px; padding:8px 10px; font-size:.8125rem; }
  .floating-bar input#floatMessage { display:none; }
  .float-selected { padding:6px 10px; font-size:.75rem; }
  .float-cat-btn { padding:8px 12px; font-size:.6875rem; }

  /* Section padding */
  .section, .section-full { padding:40px 16px; }
}

@media (max-width:480px) {
  .card-grid { grid-template-columns:1fr; }
  .brand-grid { grid-template-columns:1fr; }
  .guide-grid { grid-template-columns:1fr; }
  .portfolio-grid { grid-template-columns:1fr 1fr; gap:12px; }
  .filter-bar { gap:6px; }
  .filter-btn { padding:8px 16px; font-size:.8125rem; }
  .chat-bubble { max-width:92%; }
}

/* --- Promo Modal --- */
.promo-overlay {
  position:fixed; inset:0; z-index:3000;
  background:rgba(0,0,0,.75);
  backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px);
  display:flex; align-items:center; justify-content:center;
  opacity:1; transition:opacity .35s ease;
  padding:24px;
}
.promo-overlay.closing { opacity:0; pointer-events:none; }
.promo-modal {
  position:relative;
  background:var(--surface);
  border-radius:16px;
  max-width:480px; width:100%;
  overflow:hidden;
  box-shadow:0 16px 64px rgba(0,0,0,.3);
  transform:translateY(0); transition:transform .35s ease;
}
.promo-overlay.closing .promo-modal { transform:translateY(20px); }
.promo-img {
  width:100%; aspect-ratio:4/3;
  object-fit:cover; display:block;
  background:var(--bg);
}
.promo-body {
  padding:28px 24px 24px; text-align:center;
}
.promo-title {
  font-size:1.375rem; font-weight:700; color:var(--primary);
  margin-bottom:8px; line-height:1.3;
}
.promo-desc {
  font-size:.9375rem; color:var(--text-muted); line-height:1.6;
  margin-bottom:20px;
}
.promo-close {
  position:absolute; top:12px; right:12px;
  width:36px; height:36px; border-radius:50%;
  background:rgba(0,0,0,.4); color:#fff;
  display:flex; align-items:center; justify-content:center;
  transition:all var(--transition); z-index:1;
}
.promo-close:hover { background:rgba(0,0,0,.6); }
.promo-footer {
  display:flex; border-top:1px solid var(--border);
}
.promo-footer button {
  flex:1; padding:14px; font-size:.875rem; font-weight:600;
  transition:all var(--transition); color:var(--text-muted);
}
.promo-footer button:hover { background:var(--bg); }
.promo-footer button:first-child {
  border-right:1px solid var(--border);
}
.promo-footer button:last-child {
  color:var(--accent);
}

/* --- View Transitions API --- */
@view-transition { navigation: auto; }

::view-transition-old(portfolio-grid) {
  animation:.3s ease both vt-fade-out;
}
::view-transition-new(portfolio-grid) {
  animation:.3s ease both vt-fade-in;
}
@keyframes vt-fade-out { to { opacity:0; transform:scale(.96); } }
@keyframes vt-fade-in  { from { opacity:0; transform:scale(.96); } }

/* view-transition-name 지정 */
.portfolio-grid { view-transition-name:portfolio-grid; }

/* 접근성: 모션 감소 설정 존중 */
@media (prefers-reduced-motion:reduce) {
  ::view-transition-old(*),
  ::view-transition-new(*) { animation:none; }
  .fade-up { transition:none; }
  .chat-bubble { transition:none; }
  .hero-slide-bg { animation:none; }
}

/* --- Utility --- */
.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;
}
.overflow-hidden { overflow:hidden; }