/* 아르고뷰 · 클래스업 뷰 소개 사이트 공용 틀
   색 정본: 아르고뷰 = c210/docs/ARGO-01 0-2장(두 점) · 클래스업 = #6c60f4(클래스업 디자인 시스템) */
@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css");

:root {
  --teal: #0E9696;
  --teal-dark-bg: #2EC4C4;
  --amber: #F2A516;
  --navy: #0F2236;
  --ink: #16202b;
  --sub: #5b6875;
  --line: #e3e8ee;
  --bg: #ffffff;
  --soft: #f4f7f9;
  --accent: var(--teal);
  --accent-ink: #ffffff;
  --radius: 16px;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard Variable", Pretendard, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}
img, video, svg { display: block; max-width: 100%; }
.hero .wrap > *, .scene > *, .steps > *, .grid2 > *, .grid3 > * { min-width: 0; }   /* 영상 원래 폭(1280)이 칸을 밀어내지 않게 */
a { color: inherit; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

/* 상단바 */
.top {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.top .wrap { display: flex; align-items: center; gap: 20px; height: 64px; }
.top .brand img { height: 24px; width: auto; }
.top nav { margin-left: auto; display: flex; align-items: center; gap: 22px; font-size: 15px; }
.top nav a { text-decoration: none; color: var(--sub); }
.top nav a:hover { color: var(--ink); }
.top nav a.on { color: var(--ink); font-weight: 700; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 700; text-decoration: none; font-size: 16px;
  border: 0; cursor: pointer;
}
.btn.ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--line); }
.btn.small { padding: 8px 16px; font-size: 14px; }
.top .btn.small { color: var(--accent-ink); }

/* 첫 화면 */
.hero { padding: 72px 0 56px; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--accent); letter-spacing: .02em; }
.hero h1 { font-size: clamp(32px, 4.6vw, 52px); line-height: 1.22; letter-spacing: -.02em; margin: 14px 0 18px; }
.hero p.lead { font-size: 19px; color: var(--sub); margin: 0 0 28px; }
.hero .cta { display: flex; gap: 12px; flex-wrap: wrap; }

.film { border-radius: var(--radius); overflow: hidden; background: #0b1520; box-shadow: 0 24px 60px -24px rgba(15,34,54,.35); aspect-ratio: 16 / 9; }
.film video { width: 100%; height: 100%; object-fit: cover; }

/* 구역 */
section.band { padding: 80px 0; }
section.band.soft { background: var(--soft); }
section.band.dark { background: var(--navy); color: #e8eef4; }
section.band.dark .sub { color: #9fb0c0; }
.band h2 { font-size: clamp(26px, 3.2vw, 36px); letter-spacing: -.02em; line-height: 1.3; margin: 0 0 12px; }
.band .sub { color: var(--sub); margin: 0 0 40px; font-size: 18px; }

/* 단계 · 카드 */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: s; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.dark .card { background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.1); }
.card h3 { font-size: 19px; margin: 14px 0 8px; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--sub); font-size: 16px; }
.dark .card p { color: #9fb0c0; }
.card .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); }
.dark .card .ico { background: rgba(46,196,196,.14); color: var(--teal-dark-bg); }
.card .ico svg { width: 24px; height: 24px; }
.steps .card { position: relative; }
.steps .card::before { counter-increment: s; content: counter(s, decimal-leading-zero); position: absolute; top: 22px; right: 22px; font-size: 13px; font-weight: 800; color: #b6c2cd; }

.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

/* 상태 칩 */
.states { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; background: #fff; border: 1px solid var(--line); font-size: 15px; font-weight: 600; }
.chip i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

/* 표 */
.spec { width: 100%; border-collapse: collapse; font-size: 16px; }
.spec th, .spec td { text-align: left; padding: 14px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec th { width: 30%; color: var(--sub); font-weight: 600; }

/* 영상 줄 */
.scene { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; padding: 40px 0; border-top: 1px solid var(--line); }
.scene:first-of-type { border-top: 0; }
.scene.flip { grid-template-columns: 1fr 1.2fr; }
.scene.flip .film { order: 2; }
.scene .hook { font-size: 15px; font-weight: 700; color: var(--accent); margin: 0 0 8px; }
.scene h3 { font-size: clamp(22px, 2.6vw, 30px); line-height: 1.3; letter-spacing: -.02em; margin: 0 0 12px; }
.scene p { color: var(--sub); margin: 0 0 14px; }
.scene ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.scene li { display: flex; gap: 10px; align-items: flex-start; }
.scene li::before { content: ""; flex: none; width: 8px; height: 8px; margin-top: 9px; border-radius: 50%; background: var(--accent); }
.tag { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--sub); margin-top: 14px; }
.tag img { height: 14px; width: auto; }

/* 문의 */
.contact { text-align: center; }
.contact .tel { display: inline-block; font-size: clamp(34px, 5vw, 48px); font-weight: 800; letter-spacing: -.01em; margin: 6px 0 22px; text-decoration: none; }

/* 바닥 */
footer { padding: 36px 0 48px; border-top: 1px solid var(--line); font-size: 13px; color: var(--sub); }
footer .wrap { display: grid; gap: 6px; }
footer .row { display: flex; flex-wrap: wrap; gap: 4px 14px; }
footer img { height: 20px; width: auto; margin-bottom: 8px; }

@media (max-width: 900px) {
  .hero .wrap, .scene, .scene.flip { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .scene.flip .film { order: 0; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .grid3 { grid-template-columns: minmax(0, 1fr); }
  .grid2 { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .top nav a.hide-s { display: none; }
  .hero { padding: 40px 0 36px; }
  section.band { padding: 56px 0; }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .spec th { width: 38%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}