/* =================================================================
   aitrade.kr  —  XAUUSD 자동매매 홍보 사이트
   Theme : Deep Black + Gold (이미지 인포그래픽과 동일 톤)
   ================================================================= */

:root{
  --bg:        #07070c;
  --bg-2:      #0c0c14;
  --panel:     #0e0e17;
  --line:      #1d1d2a;

  --gold:      #e8c468;
  --gold-2:    #f6e29a;
  --gold-deep: #b88a2e;
  --gold-grad: linear-gradient(135deg,#f6e29a 0%,#e8c468 38%,#c89b3c 100%);

  --ink:       #f4f1e9;   /* 기본 글자 */
  --ink-soft:  #b7b2a6;   /* 보조 글자 */
  --ink-dim:   #6f6b62;   /* 더 흐린 */

  --maxw:      1200px;
  --radius:    16px;
  --shadow:    0 24px 60px -24px rgba(0,0,0,.8);
  --ease:      cubic-bezier(.16,.84,.36,1);

  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
          "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
}

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

html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }

body{
  margin:0;
  font-family:var(--font);
  background:
    radial-gradient(1100px 700px at 50% -8%, #14131f 0%, transparent 60%),
    var(--bg);
  color:var(--ink);
  line-height:1.6;
  letter-spacing:-.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }

em{ font-style:normal; background:var(--gold-grad);
    -webkit-background-clip:text; background-clip:text; color:transparent; }

/* ── 공통 컨테이너 폭 ───────────────────────────── */
.stage{ width:100%; }
.topbar__inner,.hero,.panels,.finale,.legal{
  width:100%; max-width:var(--maxw); margin-inline:auto;
  padding-inline:20px;
}

/* =================================================================
   상단 고정 바
   ================================================================= */
.topbar{
  position:sticky; top:0; z-index:50;
  background:rgba(8,8,13,.72);
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s, background .3s;
}
.topbar.is-scrolled{
  border-bottom-color:var(--line);
  background:rgba(8,8,13,.92);
}
.topbar__inner{
  display:flex; align-items:center; justify-content:space-between;
  height:64px;
}
.brand{ display:flex; align-items:baseline; gap:9px; }
.brand__mark{
  width:11px; height:11px; border-radius:3px;
  background:var(--gold-grad);
  box-shadow:0 0 14px rgba(232,196,104,.6);
  transform:rotate(45deg); align-self:center;
}
.brand__name{
  font-size:20px; font-weight:800; letter-spacing:.06em;
  background:var(--gold-grad); -webkit-background-clip:text;
  background-clip:text; color:transparent;
}
.brand__sub{
  font-size:11px; font-weight:600; letter-spacing:.18em;
  color:var(--ink-dim);
}
.topbar__cta{ display:flex; gap:10px; align-items:center; }

/* =================================================================
   버튼 (CTA)
   ================================================================= */
.btn{
  --bd:rgba(232,196,104,.4);
  position:relative; display:inline-flex; align-items:center; gap:8px;
  padding:12px 20px; border-radius:999px;
  font-family:var(--font); font-size:15px; font-weight:700;
  letter-spacing:-.01em; cursor:pointer; white-space:nowrap;
  border:1px solid var(--bd); background:rgba(232,196,104,.05);
  color:var(--gold-2);
  transition:transform .25s var(--ease), box-shadow .25s, background .25s, border-color .25s;
  -webkit-tap-highlight-color:transparent;
}
.btn:hover{ transform:translateY(-2px); border-color:var(--gold);
  box-shadow:0 10px 26px -12px rgba(232,196,104,.45); }
.btn:active{ transform:translateY(0); }
.btn:focus-visible{ outline:2px solid var(--gold); outline-offset:3px; }

/* 강조(채워진 골드) */
.btn--primary{
  background:var(--gold-grad); border-color:transparent;
  color:#231a07; font-weight:800;
  box-shadow:0 8px 26px -10px rgba(232,196,104,.55);
}
.btn--primary:hover{ box-shadow:0 14px 34px -10px rgba(232,196,104,.7); }

/* 아이콘 (CSS만으로 그림) */
.btn__ico{ width:16px; height:16px; flex:none; position:relative; }
.btn[data-icon="chat"]  .btn__ico{ -webkit-mask:var(--ico-chat) center/contain no-repeat; mask:var(--ico-chat) center/contain no-repeat; background:currentColor; }
.btn[data-icon="chart"] .btn__ico{ -webkit-mask:var(--ico-chart) center/contain no-repeat; mask:var(--ico-chart) center/contain no-repeat; background:currentColor; }
.btn[data-icon="apply"] .btn__ico{ -webkit-mask:var(--ico-apply) center/contain no-repeat; mask:var(--ico-apply) center/contain no-repeat; background:currentColor; }
:root{
  --ico-chat:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M12 3C6.5 3 2 6.6 2 11c0 2.5 1.4 4.7 3.6 6.1L5 21l4.2-2.2c.9.2 1.8.3 2.8.3 5.5 0 10-3.6 10-8s-4.5-8-10-8z'/%3E%3C/svg%3E");
  --ico-chart:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M4 20h16v2H4zM6 12h3v6H6zm5-6h3v12h-3zm5 3h3v9h-3z'/%3E%3C/svg%3E");
  --ico-apply:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M12 2 4 6v6c0 5 3.4 9.4 8 10 4.6-.6 8-5 8-10V6l-8-4zm-1 13-3-3 1.4-1.4L11 12.2l4.6-4.6L17 9l-6 6z'/%3E%3C/svg%3E");
}

/* =================================================================
   히어로
   ================================================================= */
.hero{
  position:relative; text-align:center;
  padding-top:78px; padding-bottom:64px;
}
.hero__glow{
  position:absolute; inset:-40px 0 auto 0; height:420px; z-index:-1;
  background:radial-gradient(620px 320px at 50% 20%, rgba(232,196,104,.16), transparent 70%);
  pointer-events:none;
}
.hero__eyebrow{
  margin:0 0 18px; font-size:12px; font-weight:700;
  letter-spacing:.32em; color:var(--gold);
}
.hero__title{
  margin:0 auto; max-width:18ch;
  font-size:clamp(30px,6.4vw,56px); font-weight:800; line-height:1.22;
  letter-spacing:-.025em;
}
.hero__lead{
  margin:22px auto 0; max-width:60ch;
  color:var(--ink-soft); font-size:clamp(15px,2.4vw,18px);
}
.hero__stats{
  display:flex; flex-wrap:wrap; gap:12px; justify-content:center;
  margin:34px auto 0; max-width:720px;
}
.stat{
  flex:1 1 200px; padding:16px 18px; border-radius:14px;
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
  border:1px solid var(--line);
}
.stat__k{ display:block; font-size:13px; color:var(--gold); font-weight:700; letter-spacing:.02em; }
.stat__v{ display:block; margin-top:4px; font-size:15px; color:var(--ink); }

.hero__cta{
  display:flex; flex-wrap:wrap; gap:12px; justify-content:center;
  margin-top:36px;
}
.hero__scroll{
  display:block; width:26px; height:42px; margin:42px auto 0;
  border:2px solid var(--line); border-radius:14px; position:relative;
}
.hero__scroll span{
  position:absolute; top:8px; left:50%; width:4px; height:8px;
  margin-left:-2px; border-radius:2px; background:var(--gold);
  animation:scrolldot 1.6s var(--ease) infinite;
}
@keyframes scrolldot{ 0%{opacity:0;transform:translateY(0)} 40%{opacity:1} 80%{opacity:0;transform:translateY(12px)} 100%{opacity:0} }

/* =================================================================
   인포그래픽 패널
   ================================================================= */
.panels{ padding-top:8px; padding-bottom:8px; }
.panel{
  position:relative; margin:0 auto 26px; border-radius:var(--radius);
  overflow:hidden; border:1px solid var(--line);
  box-shadow:var(--shadow); background:var(--panel);
}
.panel::after{   /* 상단 골드 헤어라인 */
  content:""; position:absolute; inset:0 0 auto 0; height:1px;
  background:linear-gradient(90deg,transparent,rgba(232,196,104,.5),transparent);
}
.panel img{ width:100%; height:auto; }

/* 데이터 유도 띠 */
.ribbon{
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  flex-wrap:wrap;
  max-width:var(--maxw); margin:0 auto 26px; padding:18px 24px;
  border-radius:var(--radius);
  border:1px solid rgba(232,196,104,.28);
  background:
    radial-gradient(400px 120px at 0% 0%, rgba(232,196,104,.10), transparent 70%),
    linear-gradient(180deg,#111019,#0c0b13);
}
.ribbon__txt{ font-size:clamp(15px,2.6vw,18px); color:var(--ink-soft); }
.ribbon__txt strong{ color:var(--ink); font-weight:800; }

/* =================================================================
   하단 CTA (finale)
   ================================================================= */
.finale{
  position:relative; text-align:center;
  padding-top:64px; padding-bottom:64px;
}
.finale__glow{
  position:absolute; inset:auto 0 -10px 0; height:300px; z-index:-1;
  background:radial-gradient(520px 240px at 50% 90%, rgba(232,196,104,.14), transparent 70%);
}
.finale__title{
  margin:0 auto; max-width:24ch; font-weight:800;
  font-size:clamp(24px,4.6vw,40px); line-height:1.3; letter-spacing:-.02em;
}
.finale__lead{ margin:18px auto 0; max-width:56ch; color:var(--ink-soft);
  font-size:clamp(15px,2.4vw,17px); }
.finale__cta{ display:flex; flex-wrap:wrap; gap:12px; justify-content:center;
  margin-top:32px; }

/* =================================================================
   면책 조항
   ================================================================= */
.legal{
  border-top:1px solid var(--line); margin-top:24px;
  padding-top:34px; padding-bottom:120px; text-align:center;
}
.legal__title{
  margin:0 0 12px; font-size:14px; font-weight:700; letter-spacing:.04em;
  color:var(--gold);
}
.legal__body{
  margin:0 auto; max-width:760px; font-size:13px; line-height:1.85;
  color:var(--ink-dim);
}
.legal__copy{ margin:22px 0 0; font-size:12px; color:var(--ink-dim);
  letter-spacing:.06em; }

/* =================================================================
   모바일 하단 도크
   ================================================================= */
.dock{
  position:fixed; left:0; right:0; bottom:0; z-index:45;
  display:none; gap:8px; padding:10px 12px;
  padding-bottom:calc(10px + env(safe-area-inset-bottom));
  background:rgba(8,8,13,.9);
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
.dock .btn{ flex:1; justify-content:center; padding:11px 4px; font-size:12.5px;
  gap:4px; white-space:normal; line-height:1.25; text-align:center; }
.dock .btn .btn__ico{ display:none; }
.dock .btn .btn__txt{ font-size:12.5px; }

/* =================================================================
   실전 데이터 뷰어 (라이트박스)
   ================================================================= */
.viewer{
  position:fixed; inset:0; z-index:100;
  background:rgba(4,4,7,.96);
  backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
  display:flex; flex-direction:column;
  opacity:0; visibility:hidden; transition:opacity .28s var(--ease);
}
.viewer.is-open{ opacity:1; visibility:visible; }

.viewer__topbar{
  position:relative; z-index:3; flex:none;
  display:flex; align-items:center; gap:12px;
  height:56px; padding:0 16px;
  padding-top:env(safe-area-inset-top);
  border-bottom:1px solid var(--line);
}
.viewer__title{ font-weight:700; color:var(--gold-2); letter-spacing:.02em; }
.viewer__count{ font-size:13px; color:var(--ink-soft); font-variant-numeric:tabular-nums; }
.viewer__close{
  margin-left:auto; width:40px; height:40px; border-radius:10px;
  border:1px solid var(--line); background:rgba(255,255,255,.04);
  color:var(--ink); font-size:26px; line-height:1; cursor:pointer;
  -webkit-tap-highlight-color:transparent;
}
.viewer__close:hover{ border-color:var(--gold); color:var(--gold); }

/* 슬라이드 트랙 — 네이티브 가로 스크롤 + 스냅 */
.viewer__track{
  position:relative; z-index:1; flex:1; display:flex;
  overflow-x:auto; overflow-y:hidden;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
  touch-action:pan-x;
  scrollbar-width:none;            /* Firefox */
}
.viewer__track::-webkit-scrollbar{ display:none; }   /* Chrome/Safari */
.viewer__track.is-locked{          /* 줌 중에는 스크롤 잠금 */
  overflow:hidden; touch-action:none; scroll-snap-type:none;
}
.vslide{
  flex:0 0 100%; width:100%; min-width:100%; height:100%;
  scroll-snap-align:center; scroll-snap-stop:always;
  display:flex; align-items:center; justify-content:center;
  overflow:hidden;
}
.vslide img{
  max-width:100%; max-height:100%; width:auto; height:auto;
  object-fit:contain; user-select:none; -webkit-user-drag:none;
  will-change:transform;
}

/* 좌우 네비 (PC) */
.viewer__nav{
  position:absolute; top:50%; transform:translateY(-50%); z-index:3;
  width:52px; height:52px; border-radius:50%;
  border:1px solid var(--line); background:rgba(12,12,20,.7);
  color:var(--ink); font-size:30px; line-height:1; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:border-color .2s,color .2s,background .2s;
}
.viewer__nav:hover{ border-color:var(--gold); color:var(--gold); }
.viewer__nav--prev{ left:18px; }
.viewer__nav--next{ right:18px; }
.viewer__nav[disabled]{ opacity:.25; pointer-events:none; }

/* 점 인디케이터 */
.viewer__dots{
  position:absolute; left:0; right:0; bottom:46px; z-index:3;
  display:flex; gap:7px; justify-content:center; flex-wrap:wrap;
  padding:0 16px; pointer-events:none;
}
.viewer__dots i{
  width:7px; height:7px; border-radius:50%; background:rgba(255,255,255,.25);
  transition:background .2s,width .2s;
}
.viewer__dots i.on{ width:20px; border-radius:4px; background:var(--gold); }

.viewer__hint{
  position:absolute; left:0; right:0; bottom:14px; z-index:3;
  margin:0; text-align:center; font-size:12px; color:var(--ink-dim);
  transition:opacity .4s; pointer-events:none;
}
.viewer__hint.is-hidden{ opacity:0; }

/* =================================================================
   스크롤 등장 애니메이션
   ================================================================= */
.reveal{ opacity:0; transform:translateY(26px);
  transition:opacity .7s var(--ease), transform .7s var(--ease);
  transition-delay:var(--d,0ms); }
.reveal.is-in{ opacity:1; transform:none; }

/* =================================================================
   반응형
   ================================================================= */
.br-pc{ display:inline; }

@media (max-width:820px){
  .topbar__cta .btn--consult{ display:none; }
  .br-pc{ display:none; }
  .hero{ padding-top:54px; }
  .ribbon{ flex-direction:column; align-items:stretch; text-align:center; }
  .ribbon .btn{ justify-content:center; }
}

@media (max-width:680px){
  /* 모바일: 상단 바는 로고+데이터만, 행동은 하단 도크로 */
  .topbar__cta{ display:none; }
  .dock{ display:flex; }
  .legal{ padding-bottom:96px; }
  .hero__cta .btn{ flex:1 1 100%; justify-content:center; }
  .viewer__nav{ display:none; }   /* 모바일은 스와이프로 이동 */
  .panel{ border-radius:12px; }
  .topbar__inner{ height:56px; }
}

@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
}