/* ============ OneSearchPro :: styles.css ============ */
:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --bg-dark: #0b1020;
  --text: #0f172a;
  --text-soft: #475569;
  --muted: #94a3b8;
  --line: #e5e7eb;
  --brand: #2563eb;
  --brand-2: #06b6d4;
  --brand-3: #7c3aed;
  --accent: #22c55e;
  --warn: #f59e0b;
  --shadow: 0 10px 30px rgba(2, 12, 27, 0.08);
  --radius: 14px;
  --radius-lg: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Pretendard', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; margin: 0; }

.container { width: min(1180px, 92%); margin-inline: auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .85rem 1.4rem; border-radius: 999px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: all .2s ease;
  font-size: .95rem; white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-3)); color: #fff; box-shadow: 0 8px 22px rgba(37, 99, 235, .35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(37, 99, 235, .45); }
.btn-outline { border-color: var(--line); background: #fff; color: var(--text); }
.btn-outline:hover { border-color: var(--brand); color: var(--brand); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); padding: .55rem 1rem; }
.btn-ghost:hover { background: var(--bg-soft); }
.w-100 { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85); backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: inline-flex; align-items: center; gap: .55rem; font-weight: 700; font-size: 1.15rem; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px;
  display: grid; place-items: center; color: #fff; font-weight: 800;
  background: linear-gradient(135deg, var(--brand), var(--brand-3));
  box-shadow: 0 6px 14px rgba(124, 58, 237, .35);
}
.brand-name strong { color: var(--brand); }
.nav { display: flex; align-items: center; gap: 1.4rem; }
.nav > a, .nav .nav-trigger { font-weight: 500; color: var(--text-soft); }
.nav > a:hover, .nav .nav-trigger:hover { color: var(--brand); }
.nav .active, .nav a.active { color: var(--brand); font-weight: 600; }
.nav-toggle { display: none; background: transparent; border: 0; flex-direction: column; gap: 4px; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

/* Dropdown */
.has-dropdown { position: relative; }
.has-dropdown .nav-trigger { display: inline-flex; align-items: center; gap: .25rem; }
.has-dropdown .caret { font-size: .75rem; opacity: .7; transition: transform .2s; }
.has-dropdown:hover .caret, .has-dropdown:focus-within .caret { transform: rotate(180deg); }
.dropdown {
  position: absolute; top: calc(100% + 4px); left: 50%; transform: translateX(-50%) translateY(-6px);
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  box-shadow: 0 18px 40px rgba(2, 12, 27, .12); padding: 10px;
  min-width: 280px; display: grid; gap: 2px;
  opacity: 0; visibility: hidden; transition: all .18s ease; z-index: 60;
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown a {
  display: block; padding: .7rem .9rem; border-radius: 10px; font-weight: 500;
  color: var(--text); font-size: .92rem;
}
.dropdown a:hover { background: var(--bg-soft); color: var(--brand); }
.dropdown a.dd-main {
  background: linear-gradient(135deg, #eff6ff, #f5f3ff); color: var(--text);
  border: 1px solid #e0e7ff; margin-bottom: 4px;
}
.dropdown a.dd-main b { display: block; color: var(--brand); }
.dropdown a.dd-main span { font-size: .75rem; color: var(--muted); font-weight: 500; }

/* Breadcrumb */
.breadcrumb { padding: 14px 0; background: var(--bg-soft); border-bottom: 1px solid var(--line); font-size: .88rem; color: var(--muted); }
.breadcrumb a { color: var(--text-soft); }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb span { color: var(--muted); margin: 0 4px; }

/* Page hero (inner pages) */
.page-hero {
  padding: 80px 0 60px;
  background:
    radial-gradient(900px 380px at 90% -10%, rgba(37,99,235,.10), transparent 60%),
    radial-gradient(700px 320px at -10% 20%, rgba(124,58,237,.10), transparent 60%),
    linear-gradient(180deg, #fff, #f8fafc);
}
.page-hero h1 { font-size: clamp(2rem, 4vw, 3rem); line-height: 1.18; margin: 1rem 0; font-weight: 800; letter-spacing: -.02em; }
.page-hero-grid { display: grid; grid-template-columns: 1.3fr .9fr; gap: 50px; align-items: center; }
.page-hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.page-hero-stats > div {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.2rem; box-shadow: var(--shadow);
}
.page-hero-stats b { display: block; font-size: 1.6rem; font-weight: 800; color: var(--text); }
.page-hero-stats span { font-size: .85rem; color: var(--muted); }

/* CTA actions block (page-level) */
.cta-actions { display: flex; flex-direction: column; gap: 12px; align-items: stretch; }
.btn-lg { padding: 1rem 1.6rem; font-size: 1rem; }
.btn-light { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.25); }
.btn-light:hover { background: rgba(255,255,255,.16); color: #fff; border-color: rgba(255,255,255,.45); }

/* 5-column feature grid */
.feat-grid-5 { grid-template-columns: repeat(5, 1fr); }

/* svc anchor (clickable card) */
a.svc { color: inherit; }
a.svc:hover { color: inherit; }
.svc-link { display: inline-block; margin-top: .8rem; color: var(--brand); font-weight: 600; font-size: .9rem; }
a.svc .svc-link { color: var(--brand); }

/* Contact form fine print */
.form-fine { font-size: .78rem; color: var(--muted); margin: 0; text-align: center; }

/* ---------- Hero ---------- */
.hero {
  position: relative; padding: 90px 0 110px;
  background:
    radial-gradient(1100px 500px at 80% -10%, rgba(37,99,235,.10), transparent 60%),
    radial-gradient(800px 380px at -10% 30%, rgba(124,58,237,.10), transparent 60%),
    linear-gradient(180deg, #fff, #f8fafc);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .12em;
  color: var(--brand); background: rgba(37,99,235,.08); padding: .35rem .7rem;
  border-radius: 999px; text-transform: uppercase;
}
.grad-text { background: linear-gradient(90deg,var(--brand),var(--brand-3)); -webkit-background-clip: text; background-clip: text; color: transparent; }
h1 {
  font-size: clamp(2.1rem, 4.4vw, 3.4rem); line-height: 1.18; margin: 1.1rem 0 1rem;
  font-weight: 800; letter-spacing: -.02em;
}
.grad { background: linear-gradient(90deg, var(--brand), var(--brand-2), var(--brand-3)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 1.08rem; color: var(--text-soft); max-width: 56ch; }
.cta-row { display: flex; gap: .8rem; margin: 1.6rem 0 1.4rem; flex-wrap: wrap; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; padding-top: 1.2rem; border-top: 1px dashed var(--line); }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats b { font-size: 1.45rem; font-weight: 800; color: var(--text); }
.hero-stats span { font-size: .82rem; color: var(--muted); }

/* Hero visual */
.hero-visual { position: relative; min-height: 380px; }
.card {
  position: absolute; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow); padding: 1.2rem;
}
.card-rank { inset: 0 30px 50px 0; padding: 1.1rem 1.2rem; }
.card-head { display: flex; align-items: center; gap: 6px; margin-bottom: 14px; color: var(--muted); font-size: .8rem; }
.card-title { margin-left: auto; font-weight: 600; color: var(--text-soft); }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-r { background: #ef4444; } .dot-y { background: #f59e0b; } .dot-g { background: #22c55e; }
.rank-row { display: grid; grid-template-columns: 38px 1fr 130px; gap: 10px; align-items: center; padding: 8px 0; border-top: 1px solid var(--line); }
.rank-row.top { border-top: 0; }
.rank-row .rank { font-weight: 800; color: var(--brand); }
.rank-row.top .rank { color: var(--accent); }
.rank-row .domain { font-size: .8rem; color: var(--muted); text-align: right; }
.bar { height: 8px; background: #eef2f7; border-radius: 999px; overflow: hidden; }
.bar .fill { display: block; height: 100%; background: linear-gradient(90deg, var(--brand), var(--brand-3)); border-radius: 999px; }
.rank-row.top .fill { background: linear-gradient(90deg, var(--accent), #4ade80); }

.card-metric {
  bottom: 0; right: 0; padding: 1rem 1.2rem; display: flex; align-items: center; gap: 1rem;
  color: var(--accent); border: 1px solid #dcfce7;
}
.card-metric .metric-label { display: block; font-size: .8rem; color: var(--muted); }
.card-metric .metric-value { display: block; font-size: 1.5rem; font-weight: 800; color: var(--text); }
.spark { width: 110px; height: 36px; }

/* ---------- Logos ---------- */
.logos { padding: 30px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.logos-title { color: var(--muted); text-align: center; font-size: .9rem; margin: 0 0 14px; }
.logo-row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1.4rem; opacity: .7; }
.logo-row span { font-weight: 700; letter-spacing: .15em; color: var(--text-soft); font-size: .95rem; }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.section-dark { background: linear-gradient(160deg, #0b1020, #131a37); color: #e2e8f0; }
.section-dark .lead, .section-dark p { color: #cbd5e1; }
.section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 50px; }
.section-head.left { text-align: left; margin-left: 0; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); margin: .8rem 0 .8rem; letter-spacing: -.02em; font-weight: 800; }
.section-head p { color: var(--text-soft); margin: 0; }

/* ---------- Services ---------- */
.grid { display: grid; gap: 22px; }
.services { grid-template-columns: repeat(4, 1fr); }
.svc {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem 1.4rem; transition: transform .2s ease, box-shadow .2s ease, border-color .2s;
}
.svc:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c7d2fe; }
.svc-icon { font-size: 1.8rem; margin-bottom: .6rem; }
.svc h3 { margin: .2rem 0 .5rem; font-size: 1.1rem; }
.svc p { color: var(--text-soft); margin: 0 0 .8rem; font-size: .94rem; }
.svc ul li { color: var(--text-soft); font-size: .88rem; padding-left: 1rem; position: relative; }
.svc ul li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.svc-link { display: inline-block; margin-top: .9rem; color: var(--brand); font-weight: 600; font-size: .9rem; }
.svc.featured {
  grid-column: span 2;
  background: linear-gradient(135deg, #eff6ff, #f5f3ff);
  border-color: #c7d2fe;
}
.badge {
  position: absolute; top: 14px; right: 14px;
  background: linear-gradient(135deg, var(--brand), var(--brand-3));
  color: #fff; font-size: .7rem; font-weight: 700; letter-spacing: .1em;
  padding: .25rem .55rem; border-radius: 999px;
}

/* ---------- Backlink (dark) ---------- */
.backlink-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; align-items: start; }
.backlink-grid h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); margin-top: .8rem; }
.feat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 1.6rem; }
.feat { display: flex; gap: .8rem; align-items: flex-start; padding: 1rem; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius); }
.feat span { font-size: 1.3rem; }
.feat b { display: block; color: #fff; margin-bottom: 4px; }
.feat p { font-size: .88rem; margin: 0; color: #94a3b8; }
.backlink-types {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg); padding: 1.6rem;
}
.backlink-types h3 { margin: 0 0 1rem; font-size: 1.15rem; }
.bl-list li {
  display: flex; justify-content: space-between; align-items: center;
  padding: .9rem 0; border-bottom: 1px dashed rgba(255,255,255,.1);
}
.bl-list li:last-child { border-bottom: 0; }
.bl-list b { color: #fff; }
.bl-list span { color: #94a3b8; font-size: .85rem; }

/* ---------- Process ---------- */
.steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step;
}
.steps li {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem; position: relative;
}
.step-num { font-size: 2rem; font-weight: 800; color: transparent; -webkit-text-stroke: 1.5px var(--brand); display: block; line-height: 1; margin-bottom: .8rem; }
.steps h4 { margin: 0 0 .4rem; }
.steps p { color: var(--text-soft); margin: 0; font-size: .92rem; }

/* ---------- Pricing ---------- */
.pricing { grid-template-columns: repeat(3, 1fr); }
.price {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 2rem 1.6rem; display: flex; flex-direction: column; gap: 1rem;
}
.price.highlight { border-color: var(--brand); box-shadow: 0 18px 40px rgba(37,99,235,.15); transform: translateY(-6px); }
.price h3 { margin: 0; letter-spacing: .12em; color: var(--brand); font-size: .95rem; }
.price-tag { margin: 0; }
.price-tag b { font-size: 2rem; font-weight: 800; }
.price-tag span { color: var(--muted); margin-left: 4px; }
.price ul { display: grid; gap: .55rem; }
.price ul li { padding-left: 1.4rem; position: relative; color: var(--text-soft); font-size: .94rem; }
.price ul li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: 800; }

/* ---------- FAQ ---------- */
.faq-wrap { display: grid; grid-template-columns: 360px 1fr; gap: 60px; align-items: start; }
.faq { display: grid; gap: .8rem; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.2rem; transition: border-color .2s; }
.faq details[open] { border-color: var(--brand); }
.faq summary { font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::after { content: '+'; color: var(--brand); font-size: 1.4rem; line-height: 1; transition: transform .2s; }
.faq details[open] summary::after { content: '−'; }
.faq p { color: var(--text-soft); margin: .8rem 0 0; }

/* ---------- CTA / Contact ---------- */
.section-cta { background: linear-gradient(135deg, #0b1020, #1e1b4b 60%, #312e81); color: #e2e8f0; }
.section-cta h2 { color: #fff; font-size: clamp(1.8rem, 3vw, 2.4rem); margin: 0 0 .8rem; letter-spacing: -.02em; }
.section-cta p { color: #cbd5e1; }
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.contact-info { margin-top: 1.4rem; display: grid; gap: .6rem; color: #cbd5e1; }
.contact-info a { color: #fff; border-bottom: 1px dashed rgba(255,255,255,.3); }

.contact-form {
  background: #fff; color: var(--text); border-radius: var(--radius-lg);
  padding: 1.8rem; display: grid; gap: 1rem; box-shadow: 0 30px 60px rgba(0,0,0,.25);
}
.contact-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact-form label { display: grid; gap: 6px; font-size: .85rem; color: var(--text-soft); font-weight: 600; }
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%; padding: .8rem .9rem; border: 1px solid var(--line); border-radius: 10px;
  font: inherit; color: var(--text); background: #fff; transition: border-color .15s, box-shadow .15s;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus { outline: 0; border-color: var(--brand); box-shadow: 0 0 0 4px rgba(37,99,235,.15); }
.form-note { color: var(--accent); font-weight: 600; margin: 0; text-align: center; }

/* ---------- Footer ---------- */
.site-footer { background: #0a0e1a; color: #94a3b8; padding: 60px 0 24px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 30px; border-bottom: 1px solid rgba(255,255,255,.08); }
.site-footer .brand { color: #fff; }
.site-footer h5 { color: #fff; margin: 0 0 1rem; font-size: 1rem; }
.site-footer ul { display: grid; gap: .55rem; }
.site-footer a:hover { color: #fff; }
.muted { color: #64748b; margin-top: .8rem; font-size: .9rem; }
.foot-bottom { display: flex; justify-content: space-between; padding-top: 22px; font-size: .85rem; color: #64748b; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 320px; margin-top: 1.5rem; }
  .services { grid-template-columns: repeat(2, 1fr); }
  .svc.featured { grid-column: span 2; }
  .backlink-grid { grid-template-columns: 1fr; gap: 40px; }
  .feat-grid { grid-template-columns: 1fr; }
  .feat-grid-5 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .pricing { grid-template-columns: 1fr; }
  .price.highlight { transform: none; }
  .faq-wrap { grid-template-columns: 1fr; gap: 30px; }
  .cta-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .page-hero-grid { grid-template-columns: 1fr; gap: 30px; }
}
@media (max-width: 640px) {
  .nav { display: none; position: absolute; top: 70px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0; padding: 12px 5%;
    background: #fff; border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .nav a { padding: .9rem 0; border-bottom: 1px solid var(--line); }
  .nav > a:last-child { border-bottom: 0; text-align: center; margin-top: 8px; }
  .nav-toggle { display: inline-flex; }
  .has-dropdown { display: contents; }
  .has-dropdown .nav-trigger { display: none; }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 0; background: transparent; min-width: 0; }
  .dropdown a { padding: .9rem 0; border-bottom: 1px solid var(--line); border-radius: 0; }
  .dropdown a.dd-main { background: transparent; border: 0; margin: 0; }
  .dropdown a.dd-main span { display: inline; margin-left: .4rem; }
  .page-hero-stats { grid-template-columns: 1fr 1fr; }
  .feat-grid-5 { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 80px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: .8rem; }
  .services { grid-template-columns: 1fr; }
  .svc.featured { grid-column: span 1; }
  .steps { grid-template-columns: 1fr; }
  .contact-form .row { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .foot-bottom { flex-direction: column; gap: 6px; text-align: center; }
  .section { padding: 70px 0; }
}