/* tanzsoft.co.kr 랜딩 — 다크 네이비 + 라임 포인트 (자매 사이트와 완전 별개 디자인)
   official=화이트/블루, tanzsoft.kr=보라, tenzsoft.kr=시안 → 본 사이트는 다크 테마 단일 포인트 컬러 */
:root {
    --bg: #0a0f1c;
    --bg-alt: #0e1526;
    --surface: #131c30;
    --line: rgba(255, 255, 255, .09);
    --text: #eef2f8;
    --muted: #94a0b8;
    --accent: #b8f34c;
    --accent-soft: rgba(184, 243, 76, .12);
    --accent-ink: #0a0f1c;
    --radius: 18px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
    font-family: Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    letter-spacing: -.01em;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.wrap { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 820px; }
.pc-only { display: inline; }

/* ── 버튼 ── */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 28px; border-radius: 999px;
    font-size: 16px; font-weight: 700; letter-spacing: -.01em;
    border: 1px solid transparent; cursor: pointer;
    transition: transform .15s, box-shadow .15s, background .15s, border-color .15s;
}
.btn:hover { transform: translateY(-2px); }
.btn-accent {
    background: var(--accent); color: var(--accent-ink);
    box-shadow: 0 6px 24px rgba(184, 243, 76, .25);
}
.btn-accent:hover { box-shadow: 0 10px 30px rgba(184, 243, 76, .35); }
.btn-ghost { border-color: var(--line); color: var(--text); background: rgba(255, 255, 255, .03); }
.btn-ghost:hover { border-color: rgba(255, 255, 255, .25); background: rgba(255, 255, 255, .06); }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-full { width: 100%; }

/* ── 헤더 ── */
#topbar {
    position: fixed; inset: 0 0 auto; z-index: 50;
    background: transparent; transition: background .2s, border-color .2s;
    border-bottom: 1px solid transparent;
}
#topbar.scrolled { background: rgba(10, 15, 28, .82); backdrop-filter: blur(14px); border-color: var(--line); }
.nav { display: flex; align-items: center; gap: 32px; height: 68px; }
.logo { display: inline-flex; align-items: center; gap: 9px; font-weight: 800; font-size: 18px; letter-spacing: .04em; }
.logo em { font-style: normal; color: var(--accent); font-size: 13px; font-weight: 700; margin-left: -4px; }
.logo .mark { width: 12px; height: 12px; border-radius: 3px; background: var(--accent); box-shadow: 0 0 12px rgba(184, 243, 76, .6); }
.links { display: flex; gap: 26px; margin-left: auto; }
.links a { font-size: 15px; font-weight: 600; color: var(--muted); transition: color .15s; }
.links a:hover { color: var(--text); }

/* ── 히어로 ── */
.hero { padding: 150px 0 80px; position: relative; }
.hero::before {
    /* 라임 글로우 은은하게 한 점만 — 화려한 그라데이션 지양 */
    content: ""; position: absolute; top: -220px; right: -160px; width: 560px; height: 560px;
    background: radial-gradient(closest-side, rgba(184, 243, 76, .10), transparent);
    pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 14px; font-weight: 700; color: var(--accent);
    background: var(--accent-soft); border: 1px solid rgba(184, 243, 76, .25);
    padding: 7px 14px; border-radius: 999px; margin-bottom: 22px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
h1 { font-size: clamp(38px, 5.4vw, 62px); line-height: 1.16; letter-spacing: -.035em; font-weight: 800; }
h1 .accent { color: var(--accent); }
.lede { margin: 22px 0 30px; font-size: 18px; color: var(--muted); }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 36px; margin-top: 44px; padding-top: 28px; border-top: 1px solid var(--line); }
.hero-stats dt { font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.hero-stats dd { font-size: 18px; font-weight: 800; letter-spacing: -.02em; }

.hero-shots { position: relative; min-height: 420px; }
.shot { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--surface); box-shadow: 0 24px 60px rgba(0, 0, 0, .45); }
.shot-pc { position: absolute; top: 0; right: 0; width: 92%; transform: rotate(1.2deg); }
.shot-mo { position: absolute; bottom: -30px; left: 0; width: 34%; transform: rotate(-2.5deg); z-index: 2; }

/* ── 키워드 스트립 ── */
.strip { border-block: 1px solid var(--line); background: var(--bg-alt); overflow: hidden; padding: 16px 0; margin-top: 40px; }
.strip-track { display: flex; gap: 28px; white-space: nowrap; width: max-content; animation: marquee 36s linear infinite; }
.strip-track span { font-size: 15px; font-weight: 700; color: var(--muted); }
.strip-track i { color: var(--accent); font-style: normal; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ── 섹션 공통 ── */
.sec { padding: 108px 0; }
.sec-alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.sec-no { font-size: 14px; font-weight: 800; color: var(--accent); letter-spacing: .22em; margin-bottom: 12px; }
.sec h2 { font-size: clamp(28px, 3.6vw, 42px); letter-spacing: -.03em; line-height: 1.25; font-weight: 800; }
.sec-sub { margin-top: 14px; font-size: 17px; color: var(--muted); }

/* 등장 애니메이션 */
.sec .wrap, .hero-grid { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.sec .wrap.in, .hero-grid.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .sec .wrap, .hero-grid { opacity: 1; transform: none; transition: none; }
    .strip-track { animation: none; }
    html { scroll-behavior: auto; }
}

/* ── 01 솔루션 ── */
.sol-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 48px; }
.sol-card {
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
    overflow: hidden; transition: transform .2s, border-color .2s;
}
.sol-card:hover { transform: translateY(-4px); border-color: rgba(184, 243, 76, .35); }
.sol-card figure { aspect-ratio: 16 / 9; overflow: hidden; border-bottom: 1px solid var(--line); }
.sol-card figure img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.sol-body { padding: 26px 28px 30px; }
.sol-body h3 { font-size: 22px; letter-spacing: -.02em; margin-bottom: 8px; }
.sol-body > p { color: var(--muted); font-size: 15px; margin-bottom: 16px; }
.sol-body ul li { position: relative; padding-left: 22px; font-size: 15px; margin-bottom: 7px; }
.sol-body ul li::before { content: ""; position: absolute; left: 0; top: 9px; width: 12px; height: 6px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg) translateY(-2px); }

/* ── 02 가격 ── */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; align-items: stretch; }
.price-card {
    position: relative; display: flex; flex-direction: column;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 34px 30px;
}
.price-card.featured { border-color: var(--accent); box-shadow: 0 18px 50px rgba(184, 243, 76, .10); }
.price-card .badge {
    position: absolute; top: -14px; left: 28px;
    background: var(--accent); color: var(--accent-ink);
    font-size: 13px; font-weight: 800; padding: 4px 14px; border-radius: 999px;
}
.price-card h3 { font-size: 16px; letter-spacing: .14em; color: var(--muted); }
.price-card.featured h3 { color: var(--accent); }
.price { margin: 14px 0 4px; font-size: 18px; font-weight: 700; }
.price strong { font-size: 46px; letter-spacing: -.03em; font-weight: 800; }
.price s { font-size: 14px; color: var(--muted); font-weight: 600; margin-left: 8px; }
.price-desc { color: var(--muted); font-size: 15px; margin-bottom: 22px; }
.price-card ul { flex: 1; border-top: 1px solid var(--line); padding-top: 20px; margin-bottom: 26px; }
.price-card ul li { position: relative; padding-left: 22px; font-size: 15px; margin-bottom: 9px; }
.price-card ul li::before { content: ""; position: absolute; left: 0; top: 9px; width: 12px; height: 6px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg) translateY(-2px); }
.price-note { margin-top: 28px; text-align: center; color: var(--muted); font-size: 14px; }

/* ── 03 데모 ── */
.demo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 48px; }
.demo-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.demo-card figure { aspect-ratio: 16 / 9; overflow: hidden; border-bottom: 1px solid var(--line); }
.demo-card figure img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.demo-body { padding: 24px 28px 28px; }
.demo-body h3 { font-size: 20px; margin-bottom: 4px; }
.demo-body > p { color: var(--muted); font-size: 15px; margin-bottom: 18px; }
.demo-links { display: flex; gap: 10px; flex-wrap: wrap; }

/* ── 04 절차 ── */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; margin-top: 48px; counter-reset: step; list-style: none; }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 20px; position: relative; }
.steps li span { font-size: 12px; font-weight: 800; letter-spacing: .18em; color: var(--accent); }
.steps li h3 { font-size: 18px; margin: 10px 0 6px; letter-spacing: -.02em; }
.steps li p { font-size: 14px; color: var(--muted); }

/* ── 05 FAQ ── */
.faq-list { margin-top: 40px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 22px 4px; cursor: pointer; list-style: none;
    font-size: 17px; font-weight: 700; letter-spacing: -.01em;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list .chev { flex: none; width: 10px; height: 10px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg); transition: transform .2s; }
.faq-list details[open] .chev { transform: rotate(-135deg); border-color: var(--accent); }
.faq-list details p { padding: 0 4px 24px; color: var(--muted); font-size: 15.5px; max-width: 720px; }

/* ── 06 상담 ── */
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: start; }
.channels { margin-top: 32px; display: grid; gap: 12px; }
.channels a {
    display: flex; align-items: center; gap: 16px;
    background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
    padding: 16px 20px; font-size: 16px; font-weight: 600; transition: border-color .15s;
}
.channels a:hover { border-color: rgba(184, 243, 76, .4); }
.channels strong { color: var(--accent); font-size: 13px; letter-spacing: .06em; min-width: 64px; }

.contact-form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: grid; gap: 8px; font-size: 14px; font-weight: 700; color: var(--muted); }
.contact-form input[type=text], .contact-form input[type=tel], .contact-form input[type=email], .contact-form textarea {
    width: 100%; background: var(--bg); border: 1px solid var(--line); border-radius: 10px;
    color: var(--text); font: inherit; font-size: 15px; padding: 13px 15px;
    transition: border-color .15s, box-shadow .15s;
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft);
}
.contact-form textarea { resize: vertical; min-height: 120px; }
.agree { display: flex !important; align-items: flex-start; gap: 10px; font-weight: 500 !important; font-size: 13.5px !important; line-height: 1.5; }
.agree input { accent-color: var(--accent); width: 17px; height: 17px; margin-top: 2px; flex: none; }
.hp-field { position: absolute !important; left: -9999px; opacity: 0; height: 0; }
#form-status { min-height: 22px; font-size: 14px; font-weight: 700; text-align: center; }
#form-status.ok { color: var(--accent); }
#form-status.err { color: #ff7b7b; }

/* ── 푸터 ── */
footer { border-top: 1px solid var(--line); padding: 48px 0 56px; background: var(--bg); }
.foot { display: grid; gap: 14px; }
.foot p { color: var(--muted); font-size: 14px; }
.foot .copy { font-size: 13px; color: rgba(148, 160, 184, .6); }

/* ── 반응형 ── */
@media (max-width: 960px) {
    .hero { padding-top: 120px; }
    .hero-grid, .sol-grid, .demo-grid, .contact-grid { grid-template-columns: 1fr; }
    .hero-shots { min-height: 0; margin-top: 8px; }
    .shot-pc { position: relative; width: 100%; transform: none; }
    .shot-mo { display: none; }
    .price-grid { grid-template-columns: 1fr; }
    .price-card.featured { order: -1; }
    .steps { grid-template-columns: 1fr 1fr; }
    .links { display: none; }
    .pc-only { display: none; }
    .sec { padding: 76px 0; }
    .hero-stats { gap: 24px; flex-wrap: wrap; }
    .contact-form { padding: 24px; }
    .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .steps { grid-template-columns: 1fr; }
}