/* ------------------------------------------------------------
   chiango · nav, hero, trust strip, footer
   ------------------------------------------------------------ */

/* ---------- nav ---------- */
.nav-sentinel { position: absolute; top: 0; height: 1px; width: 1px; }
.nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
}
.nav.scrolled { border-bottom-color: var(--line); background: color-mix(in srgb, var(--bg) 86%, transparent); }
.nav-inner { height: 100%; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; }
.nav-links { display: flex; justify-content: center; gap: 4px; }
.nav-links a {
  position: relative; display: inline-block; padding: 8px 14px; border-radius: var(--radius-pill);
  font-weight: 560; font-size: 0.95rem; color: var(--ink-2);
  transition: color var(--dur-fast), background var(--dur-fast);
}
.nav-links a:hover { color: var(--ink); background: color-mix(in srgb, var(--ink) 6%, transparent); }
.nav-actions { display: flex; align-items: center; gap: 6px; }
.nav-actions .btn-text { padding: 8px 14px; font-weight: 560; font-size: 0.95rem; color: var(--ink-2); border-radius: var(--radius-pill); }
.nav-actions .btn-text:hover { color: var(--ink); background: color-mix(in srgb, var(--ink) 6%, transparent); }
.nav-actions .btn-primary { height: 42px; padding-inline: 18px; font-size: 0.93rem; margin-left: 6px; }
.nav-burger { display: none; }

/* 모바일 전체화면 메뉴 */
.menu {
  position: fixed; inset: 0; z-index: 60; background: var(--bg);
  display: grid; grid-template-rows: var(--nav-h) 1fr auto;
  transform: translateY(-100%); opacity: 0; visibility: hidden;
  transition: transform var(--dur) var(--ease-out), opacity var(--dur) var(--ease-out), visibility 0s var(--dur);
}
.menu.open { transform: none; opacity: 1; visibility: visible; transition-delay: 0s; }
.menu-top { display: flex; align-items: center; justify-content: space-between; }
.menu-links { display: grid; align-content: center; gap: 4px; }
.menu-links a { font-size: clamp(2rem, 8vw, 2.8rem); font-weight: 760; letter-spacing: -0.03em; line-height: 1.2; padding-block: 6px; opacity: 0; transform: translateY(18px); transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out); }
.menu.open .menu-links a { opacity: 1; transform: none; }
.menu.open .menu-links a:nth-child(1) { transition-delay: 0.08s; }
.menu.open .menu-links a:nth-child(2) { transition-delay: 0.13s; }
.menu.open .menu-links a:nth-child(3) { transition-delay: 0.18s; }
.menu.open .menu-links a:nth-child(4) { transition-delay: 0.23s; }
.menu.open .menu-links a:nth-child(5) { transition-delay: 0.28s; }
.menu-bottom { display: grid; gap: 10px; padding-bottom: 32px; }
.menu-bottom .btn { width: 100%; }

/* ---------- hero ---------- */
.hero { position: relative; padding-top: clamp(28px, 4vw, 56px); padding-bottom: clamp(40px, 6vw, 80px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero-copy { display: grid; gap: clamp(20px, 2.6vw, 30px); }
.hero-copy .lead { max-width: 30em; }
.h-display .line { display: block; overflow: hidden; padding-bottom: 0.08em; margin-bottom: -0.08em; }
.js .h-display .line > span { display: inline-block; transform: translateY(110%); transition: transform 1s var(--ease-out); }
.hero.ready .h-display .line > span { transform: none; }
.hero.ready .h-display .line:nth-child(2) > span { transition-delay: 0.1s; }
.js .hero .lead, .js .hero .search, .js .hero-visual { opacity: 0; transform: translateY(18px); transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out); }
.hero.ready .lead { opacity: 1; transform: none; transition-delay: 0.28s; }
.hero.ready .search { opacity: 1; transform: none; transition-delay: 0.4s; }
.hero.ready .hero-visual { opacity: 1; transform: none; transition-delay: 0.2s; }

/* 회전 단어 */
.rotator { display: inline-grid; grid-template-areas: "stack"; justify-items: start; vertical-align: baseline; color: var(--accent); white-space: nowrap; overflow: hidden; transition: width 0.55s var(--ease-out); }
.rotator > span { grid-area: stack; display: inline-block; justify-self: start; transition: opacity 0.55s var(--ease-out), transform 0.55s var(--ease-out); }
.rotator > span[aria-hidden="true"] { opacity: 0; transform: translateY(0.5em); pointer-events: none; }
.rotator > span.leaving { opacity: 0; transform: translateY(-0.5em); }

/* 검색 바 */
.search {
  display: grid; grid-template-columns: 1.3fr 1fr 0.9fr auto; align-items: stretch;
  background: var(--surface); border: 1px solid var(--line); border-radius: 28px;
  box-shadow: var(--shadow-card); padding: 8px;
  gap: 4px;
}
.search-field { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 10px; padding: 8px 14px; border-radius: var(--radius-card); position: relative; transition: background var(--dur-fast); }
.search-field:hover, .search-field:focus-within { background: var(--surface-2); }
.search-field + .search-field::before { content: ""; position: absolute; left: -2px; top: 14px; bottom: 14px; width: 1px; background: var(--line); }
.search-field .ico { color: var(--muted); }
.search-field label { display: block; font-size: 0.72rem; font-weight: 600; color: var(--muted); letter-spacing: 0.02em; }
.search-field select {
  width: 100%; border: 0; background: transparent; padding: 0; font-weight: 600; font-size: 0.98rem; color: var(--ink);
  appearance: none; -webkit-appearance: none; cursor: pointer;
}
.search-field select:focus { outline: none; }
.search .btn-primary { height: auto; min-height: 56px; padding-inline: 26px; border-radius: 22px; font-size: 1rem; }

/* 히어로 비주얼 */
.hero-visual { position: relative; }
.hero-visual .frame { aspect-ratio: 7 / 8; border-radius: 28px; }
.hero-visual .frame img { transform: scale(1.02); }
@media (prefers-reduced-motion: no-preference) {
  .hero.ready .hero-visual .frame img { animation: kenburns 22s var(--ease-inout) forwards; }
}
@keyframes kenburns { from { transform: scale(1.02) translate(0, 0); } to { transform: scale(1.1) translate(-1.5%, 1.5%); } }

.float-card {
  position: absolute; left: clamp(-28px, -3vw, -12px); bottom: clamp(20px, 4vw, 44px);
  width: min(320px, 82%);
  background: var(--surface); border-radius: var(--radius-card); padding: 14px 16px 14px 14px;
  box-shadow: var(--shadow-float); border: 1px solid var(--line);
  display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: start;
}
.float-card .who { font-size: 0.82rem; color: var(--muted); display: flex; gap: 6px; align-items: center; }
.float-card .who strong { color: var(--ink); font-weight: 640; }
.float-card p { font-size: 0.92rem; line-height: 1.5; margin-top: 3px; word-break: keep-all; }
.float-pill {
  position: absolute; right: clamp(-16px, -1.5vw, -8px); top: clamp(22px, 3vw, 36px);
  display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 16px 0 12px;
  background: var(--ink); color: var(--bg); border-radius: var(--radius-pill); font-size: 0.84rem; font-weight: 600;
  box-shadow: var(--shadow-float);
}
.float-pill .live { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent); }
@media (prefers-reduced-motion: no-preference) {
  .float-card { animation: drift 7s ease-in-out infinite; }
  .float-pill { animation: drift 8.5s ease-in-out infinite reverse; }
  .float-pill .live { animation: pulse 2.2s ease-out infinite; }
}
@keyframes drift { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent); } 100% { box-shadow: 0 0 0 10px transparent; } }

/* ---------- trust strip ---------- */
.trust { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item { padding: clamp(22px, 3vw, 34px) clamp(16px, 2.4vw, 32px); display: grid; gap: 4px; position: relative; }
.trust-item + .trust-item::before { content: ""; position: absolute; left: 0; top: 22%; bottom: 22%; width: 1px; background: var(--line); }
.trust-item .num { font-size: clamp(1.7rem, 2.6vw, 2.3rem); font-weight: 700; line-height: 1.05; color: var(--ink); }
.trust-item .num small { font-family: var(--font-ko); font-size: 0.55em; font-weight: 600; margin-left: 2px; letter-spacing: 0; }
.trust-item .small { color: var(--muted); }

/* ---------- footer block (dark) ---------- */
.foot { padding-top: clamp(64px, 8vw, 112px); }
.cta-band { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: clamp(28px, 5vw, 80px); align-items: center; padding-bottom: clamp(56px, 7vw, 96px); border-bottom: 1px solid var(--line); }
.cta-band .h-section { color: var(--ink); }
.cta-band .lead { color: var(--ink-2); }
.subscribe { display: grid; gap: 10px; }
.subscribe .row { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.subscribe label { font-size: 0.85rem; font-weight: 600; color: var(--ink-2); }
.subscribe input {
  height: 52px; padding: 0 18px; border-radius: var(--radius-pill); border: 1.5px solid var(--line-strong);
  background: var(--surface); color: var(--ink); font-size: 0.98rem;
}
.subscribe input::placeholder { color: var(--muted); }
.subscribe input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent); }
.subscribe .help { font-size: 0.82rem; color: var(--muted); }
.subscribe .msg { font-size: 0.86rem; color: var(--accent); min-height: 1.3em; }
.foot-grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 32px; padding-block: clamp(40px, 5vw, 64px); }
.foot-brand { display: grid; gap: 16px; align-content: start; }
.foot-brand p { color: var(--muted); font-size: 0.92rem; max-width: 26em; word-break: keep-all; }
.foot-col h4 { font-size: 0.85rem; font-weight: 700; margin-bottom: 14px; color: var(--ink); }
.foot-col li { margin-bottom: 9px; }
.foot-col a { font-size: 0.92rem; color: var(--muted); transition: color var(--dur-fast); }
.foot-col a:hover { color: var(--ink); }
.foot-social { display: flex; gap: 8px; }
.foot-social a { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line); display: grid; place-items: center; color: var(--ink-2); transition: border-color var(--dur-fast), color var(--dur-fast); }
.foot-social a:hover { border-color: var(--ink); color: var(--ink); }
.foot-legal { border-top: 1px solid var(--line); padding-block: 26px 40px; display: grid; gap: 12px; font-size: 0.8rem; color: var(--muted); line-height: 1.7; }
.foot-legal .links { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.foot-legal .links a { color: var(--ink-2); }
.foot-legal .links a:hover { color: var(--ink); }
.foot-legal address { font-style: normal; word-break: keep-all; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .nav-links a { padding-inline: 10px; font-size: 0.9rem; }
  .foot-grid { grid-template-columns: 1fr 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
}
@media (max-width: 900px) {
  .nav-inner { grid-template-columns: auto 1fr auto; }
  .nav-links, .nav-actions .btn-text, .nav-actions .btn-icon { display: none; }
  .nav-burger { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .hero-visual .frame { aspect-ratio: 4 / 3; }
  .float-card { left: 12px; bottom: 12px; }
  .float-pill { right: 12px; top: 12px; }
  .search { grid-template-columns: 1fr 1fr; }
  .search-field + .search-field::before { display: none; }
  .search .btn-primary { grid-column: 1 / -1; min-height: 52px; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .trust-item:nth-child(3)::before { display: none; }
  .trust-item:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .cta-band { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .search { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .foot-legal .links { gap: 6px 14px; }
}