/* ==========================================================================
   육구통신 (69 Communications) — 공통 스타일
   컨셉: 다크 / 신뢰 / 프리미엄 통신 — 시안 + 마젠타 그라디언트
   ========================================================================== */

:root {
  --bg:        #070a14;
  --bg-2:      #0b1020;
  --panel:     #0f1526;
  --panel-2:   #141c33;
  --line:      rgba(255, 255, 255, 0.08);
  --line-2:    rgba(255, 255, 255, 0.14);
  --txt:       #e8edf7;
  --txt-dim:   #a4b0c6;
  --txt-mut:   #6f7c96;
  --cyan:      #22c1ff;
  --cyan-2:    #4bd4ff;
  --pink:      #ff2e93;
  --pink-2:    #ff5fae;
  --grad:      linear-gradient(90deg, #22c1ff 0%, #7b6bff 50%, #ff2e93 100%);
  --grad-soft: linear-gradient(135deg, rgba(34,193,255,0.16), rgba(255,46,147,0.16));
  --ok:        #34d399;
  --shadow:    0 20px 60px rgba(0, 0, 0, 0.45);
  --radius:    18px;
  --maxw:      1160px;
  --tg:        #229ED9;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR",
    system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--txt);
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(34,193,255,0.10), transparent 60%),
    radial-gradient(1000px 600px at 100% 0%, rgba(255,46,147,0.10), transparent 55%),
    var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.01em;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------- Text / gradient helpers ---------- */
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-2);
  padding: 6px 14px; border-radius: 999px;
  background: rgba(34,193,255,0.08);
  border: 1px solid rgba(34,193,255,0.25);
}
.section { padding: 84px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-head h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); margin: 16px 0 12px; line-height: 1.25; }
.section-head p { color: var(--txt-dim); font-size: 1.02rem; margin: 0; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 10, 20, 0.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 1.15rem; }
.brand img { width: 38px; height: 38px; border-radius: 11px; box-shadow: 0 0 0 1px var(--line-2), 0 6px 18px rgba(34,193,255,0.25); }
.brand small { display: block; font-size: 0.66rem; font-weight: 600; color: var(--txt-mut); letter-spacing: 0.16em; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 15px; border-radius: 10px; font-weight: 600; font-size: 0.95rem;
  color: var(--txt-dim); transition: color .18s, background .18s;
}
.nav-links a:hover { color: var(--txt); background: rgba(255,255,255,0.05); }
.nav-links a.active { color: #fff; }
.nav-links a.active::after {
  content: ""; display: block; height: 2px; margin-top: 6px; border-radius: 2px;
  background: var(--grad);
}
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; flex: 0 0 auto;
  padding: 10px 18px; border-radius: 999px; font-weight: 700; font-size: 0.92rem; line-height: 1;
  color: #04121f; background: var(--grad);
  box-shadow: 0 8px 24px rgba(34,193,255,0.28);
  transition: transform .16s, box-shadow .16s;
}
.nav-cta svg { width: 18px; height: 18px; flex: 0 0 18px; }
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 12px 30px rgba(255,46,147,0.32); }
.nav-toggle { display: none; background: none; border: 0; color: var(--txt); cursor: pointer; padding: 8px; }
.nav-toggle svg { width: 26px; height: 26px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 24px; border-radius: 12px; font-weight: 700; font-size: 0.98rem;
  cursor: pointer; border: 1px solid transparent; transition: transform .16s, box-shadow .16s, background .16s;
}
.btn-primary { color: #04121f; background: var(--grad); box-shadow: 0 10px 30px rgba(34,193,255,0.28); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(255,46,147,0.34); }
.btn-ghost { color: var(--txt); background: rgba(255,255,255,0.04); border-color: var(--line-2); }
.btn-ghost:hover { background: rgba(255,255,255,0.09); transform: translateY(-2px); }
.btn-tg { color: #fff; background: #2aabee; box-shadow: 0 10px 30px rgba(42,171,238,0.35); }
.btn-tg:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(42,171,238,0.45); background: #1d9bd8; }
.btn svg { width: 20px; height: 20px; }
.btn-lg { padding: 16px 30px; font-size: 1.05rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: url("../assets/img/hero.jpg") center/cover no-repeat;
  opacity: 0.55;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,10,20,0.35) 0%, rgba(7,10,20,0.82) 78%, var(--bg) 100%);
}
.hero-inner {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 92px 0 96px;
}
.hero-logo {
  width: 132px; height: 132px; border-radius: 30px; margin-bottom: 26px;
  box-shadow: 0 0 0 1px var(--line-2), 0 20px 60px rgba(34,193,255,0.35), 0 10px 40px rgba(255,46,147,0.25);
  animation: floaty 6s ease-in-out infinite;
}
@keyframes floaty { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-10px);} }
.hero h1 { font-size: clamp(2.2rem, 6vw, 3.9rem); line-height: 1.12; margin: 0 0 18px; font-weight: 800; }
.hero p.lead { font-size: clamp(1.02rem, 2.2vw, 1.22rem); color: var(--txt-dim); max-width: 640px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
.hero-badges {
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 40px;
}
.hero-badges span {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 16px; border-radius: 999px; font-size: 0.86rem; font-weight: 600;
  color: var(--txt); background: rgba(255,255,255,0.05); border: 1px solid var(--line-2);
  backdrop-filter: blur(6px);
}
.hero-badges span b { color: var(--cyan-2); }

/* ---------- Trust strip / stats ---------- */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  margin-top: -46px; position: relative; z-index: 3;
}
.stat {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 20px; text-align: center; box-shadow: var(--shadow);
}
.stat .num { font-size: 1.9rem; font-weight: 800; }
.stat .lbl { color: var(--txt-dim); font-size: 0.9rem; margin-top: 4px; }

/* ---------- Feature cards ---------- */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; transition: transform .2s, border-color .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(34,193,255,0.35); box-shadow: var(--shadow); }
.card .ico {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: var(--grad-soft); border: 1px solid var(--line-2); margin-bottom: 18px;
}
.card .ico svg { width: 26px; height: 26px; stroke: var(--cyan-2); }
.card h3 { margin: 0 0 8px; font-size: 1.2rem; }
.card p { margin: 0; color: var(--txt-dim); font-size: 0.97rem; }

/* ---------- Split (image + text) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.split-media img { width: 100%; border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow); }
.split h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); margin: 14px 0 16px; }
.split p { color: var(--txt-dim); margin: 0 0 16px; }
.checklist { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 13px; }
.checklist li { display: flex; gap: 12px; align-items: flex-start; color: var(--txt); }
.checklist li svg { width: 22px; height: 22px; flex: 0 0 22px; stroke: var(--ok); margin-top: 2px; }

/* ---------- Product cards ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column; transition: transform .2s, border-color .2s, box-shadow .2s;
}
.product:hover { transform: translateY(-5px); border-color: rgba(34,193,255,0.4); box-shadow: var(--shadow); }
.product-thumb {
  position: relative; aspect-ratio: 4/3; background: #fff;
  display: grid; place-items: center; overflow: hidden;
}
.product-thumb img { width: 100%; height: 100%; object-fit: contain; padding: 14px; }
.product-tag {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em;
  padding: 5px 11px; border-radius: 999px; color: #04121f; background: var(--cyan-2);
}
.product-tag.pink { background: var(--pink-2); color: #170410; }
.product-tag.stop { background: #64748b; color: #fff; }
.product-body { padding: 20px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.product .cat { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; color: var(--cyan-2); text-transform: uppercase; }
.product h3 { margin: 6px 0 4px; font-size: 1.16rem; }
.product .model { font-size: 0.85rem; color: var(--txt-mut); margin-bottom: 14px; }
.spec { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 8px; }
.spec li { display: flex; gap: 9px; font-size: 0.92rem; color: var(--txt-dim); }
.spec li svg { width: 17px; height: 17px; flex: 0 0 17px; stroke: var(--cyan); margin-top: 4px; }
.price-row { margin-top: auto; padding-top: 16px; border-top: 1px dashed var(--line-2); }
.price-row .price { font-size: 1.5rem; font-weight: 800; }
.price-row .price small { font-size: 0.9rem; font-weight: 600; color: var(--txt-mut); }
.price-row .monthly { font-size: 0.9rem; color: var(--txt-dim); margin-top: 2px; }
.price-row .monthly b { color: var(--cyan-2); }
.product .btn { margin-top: 16px; width: 100%; }

/* ---------- Notice / list ---------- */
.notice-list { display: grid; gap: 14px; }
.notice-item {
  display: flex; align-items: center; gap: 18px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: 14px; padding: 20px 24px;
  transition: border-color .2s, transform .2s;
}
.notice-item:hover { border-color: rgba(34,193,255,0.35); transform: translateX(3px); }
.notice-item .badge {
  flex: 0 0 auto; font-size: 0.74rem; font-weight: 700; padding: 5px 11px; border-radius: 999px;
  background: rgba(34,193,255,0.12); color: var(--cyan-2); border: 1px solid rgba(34,193,255,0.3);
}
.notice-item .badge.event { background: rgba(255,46,147,0.12); color: var(--pink-2); border-color: rgba(255,46,147,0.3); }
.notice-item .n-body { flex: 1; min-width: 0; }
.notice-item .n-body h3 { margin: 0 0 4px; font-size: 1.05rem; }
.notice-item .n-body p { margin: 0; color: var(--txt-dim); font-size: 0.92rem; }
.notice-item .date { flex: 0 0 auto; color: var(--txt-mut); font-size: 0.86rem; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table.price-table { width: 100%; border-collapse: collapse; min-width: 640px; }
.price-table th, .price-table td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 0.95rem; }
.price-table thead th { background: var(--panel); color: var(--txt); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.05em; }
.price-table tbody tr:hover { background: rgba(255,255,255,0.03); }
.price-table td .m { color: var(--cyan-2); font-weight: 700; }
.price-table td strong { color: var(--txt); }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative; overflow: hidden;
  border: 1px solid var(--line-2); border-radius: 26px;
  background:
    radial-gradient(600px 300px at 20% 0%, rgba(34,193,255,0.22), transparent 60%),
    radial-gradient(600px 300px at 90% 100%, rgba(255,46,147,0.22), transparent 60%),
    var(--panel);
  padding: 56px 40px; text-align: center;
}
.cta-band h2 { font-size: clamp(1.6rem, 3.6vw, 2.4rem); margin: 0 0 12px; }
.cta-band p { color: var(--txt-dim); max-width: 560px; margin: 0 auto 26px; }
.cta-band .actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Contact page ---------- */
.contact-card {
  max-width: 560px; margin: 0 auto; text-align: center;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-2); border-radius: 26px; padding: 48px 36px; box-shadow: var(--shadow);
}
.contact-card .tg-logo {
  width: 88px; height: 88px; border-radius: 24px; margin: 0 auto 22px; display: grid; place-items: center;
  background: linear-gradient(135deg, #2aabee, #229ED9); box-shadow: 0 16px 40px rgba(42,171,238,0.4);
}
.contact-card .tg-logo svg { width: 48px; height: 48px; fill: #fff; }
.contact-card h2 { margin: 0 0 10px; font-size: 1.7rem; }
.contact-card p { color: var(--txt-dim); margin: 0 0 26px; }
.contact-id {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 26px;
  padding: 10px 18px; border-radius: 12px; font-weight: 700; font-family: ui-monospace, monospace;
  background: rgba(42,171,238,0.1); border: 1px solid rgba(42,171,238,0.3); color: var(--cyan-2);
}
.contact-steps { display: grid; gap: 16px; max-width: 560px; margin: 40px auto 0; }
.contact-step {
  display: flex; gap: 16px; align-items: center; text-align: left;
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px;
}
.contact-step .n {
  flex: 0 0 auto; width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center;
  font-weight: 800; color: #04121f; background: var(--grad);
}
.contact-step h4 { margin: 0 0 2px; font-size: 1rem; }
.contact-step p { margin: 0; color: var(--txt-dim); font-size: 0.9rem; }

/* ---------- Page header (sub pages) ---------- */
.page-hero {
  position: relative; padding: 66px 0 54px; text-align: center;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(700px 300px at 50% -20%, rgba(34,193,255,0.14), transparent 60%),
    var(--bg-2);
}
.page-hero h1 { font-size: clamp(1.9rem, 4.4vw, 2.9rem); margin: 14px 0 12px; }
.page-hero p { color: var(--txt-dim); max-width: 620px; margin: 0 auto; }

/* ---------- Info / value blocks ---------- */
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.value {
  background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 26px 22px;
}
.value .big { font-size: 2rem; font-weight: 800; margin-bottom: 6px; }
.value h4 { margin: 0 0 6px; font-size: 1.05rem; }
.value p { margin: 0; color: var(--txt-dim); font-size: 0.92rem; }

.timeline { display: grid; gap: 0; margin-top: 10px; }
.tl-item { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.tl-item:last-child { border-bottom: 0; }
.tl-item .yr { font-weight: 800; font-size: 1.15rem; color: var(--cyan-2); }
.tl-item h4 { margin: 0 0 4px; }
.tl-item p { margin: 0; color: var(--txt-dim); font-size: 0.94rem; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line); margin-top: 30px;
  background: var(--bg-2);
}
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding: 56px 0 40px; }
.footer-brand { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 1.1rem; margin-bottom: 14px; }
.footer-brand img { width: 40px; height: 40px; border-radius: 11px; }
.footer-top p { color: var(--txt-dim); font-size: 0.92rem; margin: 0 0 8px; max-width: 320px; }
.footer-col h5 { font-size: 0.82rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--txt-mut); margin: 0 0 16px; }
.footer-col a, .footer-col span { display: block; color: var(--txt-dim); font-size: 0.94rem; padding: 5px 0; }
.footer-col a:hover { color: var(--cyan-2); }
.footer-bottom {
  border-top: 1px solid var(--line); padding: 22px 0;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  color: var(--txt-mut); font-size: 0.85rem;
}
.footer-note {
  background: rgba(255,255,255,0.02); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 18px; color: var(--txt-mut); font-size: 0.82rem; margin-top: 26px; line-height: 1.7;
}

/* ---------- Floating Telegram button ---------- */
.tg-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 60;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 20px; border-radius: 999px; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, #2aabee, #229ED9);
  box-shadow: 0 14px 36px rgba(42,171,238,0.45);
  transition: transform .16s, box-shadow .16s;
}
.tg-float:hover { transform: translateY(-3px) scale(1.03); box-shadow: 0 20px 46px rgba(42,171,238,0.6); }
.tg-float svg { width: 24px; height: 24px; fill: #fff; }
.tg-float .txt { font-size: 0.95rem; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .grid-3, .product-grid, .value-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 34px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); margin-top: 30px; }
}
@media (max-width: 720px) {
  .nav-links { position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch;
    background: rgba(7,10,20,0.97); border-bottom: 1px solid var(--line); padding: 14px 22px 22px;
    gap: 4px; transform: translateY(-140%); transition: transform .28s ease; }
  .nav-links.open { transform: none; }
  .nav-links a { padding: 13px 12px; font-size: 1rem; }
  .nav-links a.active::after { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-cta { display: none; }
  .section { padding: 60px 0; }
  .grid-3, .product-grid, .value-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .tl-item { grid-template-columns: 1fr; gap: 6px; }
  .tg-float .txt { display: none; }
  .tg-float { padding: 15px; }
}