:root {
  --ink: #16191d; --mute: #5f6774; --line: #e4e8ee; --bg: #ffffff; --soft: #f5f7fa;
  --accent: #1f5eff; --accent-ink: #0f3fc4; --accent-soft: #e9efff; --ok: #1d8f4e; --warn: #b7791f;
}
* { box-sizing: border-box; }
html { color-scheme: light; scroll-behavior: smooth; }
body { margin: 0; font-family: "Pretendard", "Segoe UI", "Malgun Gothic", "Apple SD Gothic Neo", system-ui, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.7; font-size: 17px; word-break: keep-all; }
a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: Consolas, "Cascadia Mono", "D2Coding", monospace; font-size: .9em; background: var(--soft); padding: .1em .4em; border-radius: 4px; }
b { font-weight: 700; }
.muted { color: var(--mute); font-size: 15px; }

/* 상단 */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 24px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(255,255,255,.95); backdrop-filter: blur(6px); z-index: 5; }
.brand { font-weight: 800; font-size: 21px; color: var(--ink); letter-spacing: -.01em; }
.brand small { font-weight: 500; color: var(--mute); font-size: 12px; margin-left: 8px; }
.top nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 18px; font-size: 15px; }
.top nav a { color: var(--ink); }
.top nav a.navcta { background: var(--accent); color: #fff; padding: 6px 14px; border-radius: 999px; font-weight: 600; }
.top nav a.navcta:hover { text-decoration: none; filter: brightness(.95); }

/* 히어로 */
.hero { max-width: 960px; margin: 0 auto; padding: 84px 24px 56px; text-align: center; }
.eyebrow { color: var(--accent-ink); font-weight: 600; font-size: 15px; margin: 0 0 14px; }
.hero h1 { font-size: clamp(34px, 5.4vw, 54px); line-height: 1.22; letter-spacing: -.025em; margin: 0 0 20px; }
.hero p.lead { font-size: 19px; color: var(--mute); max-width: 760px; margin: 0 auto 30px; }
.hero p.lead strong { color: var(--ink); }
.hero .cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.btn { display: inline-block; padding: 12px 20px; border-radius: 10px; border: 1px solid var(--line); background: #fff; color: var(--ink); font-weight: 600; font-size: 16px; line-height: 1.3; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.ghost { border-color: transparent; color: var(--accent-ink); }
.btn.big { padding: 15px 26px; font-size: 18px; }
.btn:hover { text-decoration: none; filter: brightness(.96); }

/* 섹션 */
section.block { max-width: 960px; margin: 0 auto; padding: 56px 24px; border-top: 1px solid var(--line); }
section.block h2 { font-size: 30px; letter-spacing: -.02em; margin: 0 0 8px; }
section.block .sub { color: var(--mute); margin: 0 0 26px; font-size: 17px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
@media (max-width: 760px) { .two { grid-template-columns: 1fr; } }

/* 카드 */
.cards { display: grid; gap: 16px; }
.cards.three { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { border: 1px solid var(--line); border-radius: 14px; padding: 22px; background: #fff; }
.card h3 { margin: 0 0 6px; font-size: 20px; }
.card p { margin: 0; color: var(--mute); font-size: 16px; }
.card .ic { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft); color: var(--accent-ink); display: grid; place-items: center; font-weight: 800; font-size: 20px; margin-bottom: 12px; }

/* 제품 */
.product { border: 1px solid var(--line); border-radius: 16px; padding: 28px; margin: 18px 0; background: #fff; }
.phead .chip { display: inline-block; font-size: 13px; color: var(--accent-ink); background: var(--accent-soft); border-radius: 999px; padding: 3px 12px; font-weight: 600; }
.phead h3 { font-size: 28px; margin: 10px 0 4px; letter-spacing: -.015em; }
.phead .one { margin: 0 0 18px; font-size: 18px; color: var(--ink); }
.pbody { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
@media (max-width: 760px) { .pbody { grid-template-columns: 1fr; } }
.pbody h4 { margin: 0 0 8px; font-size: 14px; color: var(--mute); text-transform: uppercase; letter-spacing: .06em; }
.pbody h4 + ul + h4, .pbody h4 + ol + h4 { margin-top: 18px; }
ol.steps { margin: 0; padding-left: 0; list-style: none; counter-reset: s; }
ol.steps li { position: relative; padding-left: 40px; margin: 0 0 12px; font-size: 16px; }
ol.steps li::before { counter-increment: s; content: counter(s); position: absolute; left: 0; top: 2px; width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 700; font-size: 14px; display: grid; place-items: center; }
ul.ok, ul.warn { margin: 0; padding-left: 0; list-style: none; font-size: 16px; }
ul.ok li, ul.warn li { position: relative; padding-left: 24px; margin: 5px 0; }
ul.ok li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 800; }
ul.warn li::before { content: "!"; position: absolute; left: 4px; color: var(--warn); font-weight: 800; }

/* 스크린샷 */
figure.shot { margin: 0 0 22px; }
figure.shot img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 8px 28px rgba(20, 30, 60, .08); }
figure.shot.narrow img { width: auto; max-width: 100%; max-height: 420px; margin: 0 auto; }
figure.shot figcaption { color: var(--mute); font-size: 14px; margin-top: 8px; text-align: center; }

/* 시작하기 */
ol.flow { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
ol.flow li { border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
ol.flow li span { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 700; margin-bottom: 8px; }
ol.flow li b { display: block; font-size: 18px; margin-bottom: 4px; }
ol.flow li p { margin: 0; color: var(--mute); font-size: 15px; }

/* 표 */
.tbl { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 16px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { background: var(--soft); font-weight: 600; white-space: nowrap; }
table.price td:not(:first-child) { text-align: center; white-space: nowrap; font-variant-numeric: tabular-nums; font-weight: 600; }
table.price td small { color: var(--mute); font-weight: 400; font-size: 13px; }
table.price tr.hi td { background: var(--accent-soft); }

/* FAQ */
details { border-bottom: 1px solid var(--line); padding: 4px 0; }
summary { cursor: pointer; font-weight: 600; font-size: 17px; padding: 12px 0; list-style: none; position: relative; padding-right: 30px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; top: 10px; color: var(--mute); font-size: 20px; }
details[open] summary::after { content: "–"; }
details p { margin: 0 0 14px; color: var(--mute); font-size: 16px; }

/* 다운로드·안내 */
.dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.dl .card .ver { color: var(--mute); font-size: 15px; margin-bottom: 8px; }
.dl .card .ver .btn { margin-top: 10px; }
.note { background: var(--soft); border-radius: 12px; padding: 14px 16px; font-size: 15px; color: var(--mute); margin-top: 14px; }
.note b, .note strong { color: var(--ink); }

.foot { border-top: 1px solid var(--line); margin-top: 48px; padding: 24px; color: var(--mute); font-size: 13px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; }

/* 문서 페이지 (support) */
main.doc { max-width: 860px; margin: 0 auto; padding: 40px 24px; }
main.doc h1 { font-size: 30px; letter-spacing: -.01em; margin: 0 0 10px; }
main.doc h2 { font-size: 22px; margin: 36px 0 10px; padding-top: 8px; }
main.doc blockquote { margin: 0 0 16px; padding: 10px 14px; border-left: 3px solid var(--line); color: var(--mute); font-size: 14px; }
main.doc ul { padding-left: 22px; }
main.doc li { margin: 4px 0; }
main.doc p { margin: 8px 0 12px; }