/* 과거 페이지 기준 시안 A~D (운영 CSS 위에 얹음). 색은 토큰만, 라이트·다크 공통 */
.page-old main { overflow-x: clip; }
.page-old .ol-sub, .page-old .ol-bg, .page-old .ol-intro, .page-old .ol-close, .page-old .ol-list li, .page-old .ol-cards p, .page-old .ol-tiles p { word-break: keep-all; }
.ol-crumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: var(--fs-xs); font-weight: 600; color: var(--text-2); }
.ol-crumb a { color: inherit; text-decoration: none; }
.ol-crumb a:hover, .ol-crumb a:focus-visible { color: var(--accent); text-decoration: underline; }
.ol-crumb [aria-current] { color: var(--text); }
.ol-sub { margin: 0; font-size: var(--fs-lg); line-height: 1.7; color: var(--text-2); }
.ol-bg { margin: 0; font-size: clamp(1.0625rem, .95rem + .45vw, 1.375rem); line-height: 1.9; color: var(--text); }
.ol-intro { margin: 0; font-size: var(--fs-lg); font-weight: 700; color: var(--text); line-height: 1.6; }
.ol-intro--c { text-align: center; max-width: 820px; margin: 0 auto clamp(28px, 4vw, 48px); }
.ol-close { margin: var(--s6) 0 0; font-size: var(--fs-lg); font-weight: 700; line-height: 1.6; }
.ol-close--c { text-align: center; }
.ol-b-five .ol-close--c { margin-top: clamp(40px, 5vw, 64px); }
.ol-act-c { justify-content: center; margin-top: var(--s5); }
.page-old .actions { display: flex; flex-wrap: wrap; gap: 12px; }
.ol-n { font-weight: 800; font-variant-numeric: tabular-nums; color: var(--accent); }

/* 영상 공통 */
.ol-video { position: relative; overflow: hidden; background: #0b0d17; }
.ol-video video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.ol-video--frame { border-radius: var(--r-lg); border: 1px solid var(--line); box-shadow: var(--shadow-lg); }
.ol-video--wide { margin-top: clamp(40px, 6vw, 72px); border-radius: var(--r-xl); border: 1px solid var(--line); box-shadow: var(--shadow-lg); }
.ol-video--browser { border-radius: 14px; border: 1px solid rgba(255, 255, 255, .14); box-shadow: 0 30px 80px rgba(0, 0, 0, .45); padding-top: 30px; background: #151826; }
.ol-video--browser::before { content: ""; position: absolute; top: 11px; left: 14px; width: 8px; height: 8px; border-radius: 50%; background: #ff5f57; box-shadow: 14px 0 #febc2e, 28px 0 #28c840; }
.ol-video--band { max-width: 1240px; margin: 0 auto; border-radius: var(--r-xl); box-shadow: 0 30px 80px rgba(0, 0, 0, .45); }

/* ───── A ───── */
.ol-band { position: relative; margin-top: var(--header-h); padding: clamp(40px, 6vw, 80px) 0 clamp(36px, 5vw, 64px); background: var(--inv-bg); color: var(--inv-text); overflow: hidden; }
.ol-band::after { content: ""; position: absolute; inset: auto -10% -60% 40%; height: 120%; background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 35%, transparent), transparent); pointer-events: none; }
.ol-band-in { position: relative; z-index: 1; display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: var(--s5); }
.ol-band h1 { margin: 0 0 12px; font-size: clamp(2rem, 1.3rem + 2.6vw, 3.4rem); letter-spacing: -.02em; color: var(--inv-text); }
.ol-band .ol-sub { color: var(--inv-text-2); }
.ol-band .ol-crumb { color: var(--inv-text-2); }
.ol-band .ol-crumb [aria-current] { color: var(--inv-text); }
.ol-a-intro { padding-bottom: 0; }
.ol-a-main { padding-top: clamp(40px, 6vw, 72px); }
.ol-a-grid { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); gap: clamp(28px, 5vw, 80px); align-items: start; }
.ol-a-grid h2 { margin: 0; font-size: clamp(1.6rem, 1.1rem + 1.6vw, 2.4rem); letter-spacing: -.02em; }
.ol-div { position: relative; height: 1px; margin-top: clamp(40px, 6vw, 72px); background: var(--line); }
.ol-div i { position: absolute; left: 50%; top: 50%; width: 40px; height: 40px; translate: -50% -50%; border-radius: 50%; background: var(--bg); border: 1px solid var(--line); }
.ol-div i::after { content: ""; position: absolute; left: 50%; top: 44%; width: 9px; height: 9px; translate: -50% -50%; rotate: 45deg; border-right: 2px solid var(--accent); border-bottom: 2px solid var(--accent); }
.ol-a-split { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(28px, 5vw, 72px); align-items: center; }
.ol-list { margin: var(--s5) 0 0; padding: 0; list-style: none; counter-reset: ol; }
.ol-list li { counter-increment: ol; position: relative; padding: 14px 0 14px 52px; border-bottom: 1px solid var(--line); line-height: 1.65; color: var(--text); }
.ol-list li::before { content: counter(ol); position: absolute; left: 0; top: 12px; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); font-weight: 800; font-size: var(--fs-sm); }
.ol-list li:first-child { border-top: 1px solid var(--line); }
.ol-a-text .actions { margin-top: var(--s5); }

/* ───── B ───── */
.ol-hero-c { padding: calc(var(--header-h) + clamp(56px, 8vw, 104px)) 0 clamp(24px, 3vw, 40px); text-align: center; background: radial-gradient(60% 80% at 50% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent); }
.ol-hero-c .ol-crumb { justify-content: center; margin-bottom: var(--s5); }
.ol-hero-c h1 { margin: 0 0 var(--s4); font-size: var(--fs-display); letter-spacing: -.035em; line-height: 1.1; }
.ol-hero-c .ol-sub { max-width: 680px; margin: 0 auto; }
.ol-b-bg { padding-top: clamp(32px, 4vw, 56px); padding-bottom: clamp(24px, 3vw, 40px); }
.ol-quote { position: relative; max-width: 980px; margin: 0 auto; padding: clamp(32px, 4vw, 56px) clamp(28px, 5vw, 72px); border-radius: var(--r-xl); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }
.ol-quote::before { content: "“"; position: absolute; top: -.18em; left: clamp(16px, 3vw, 40px); font: 800 clamp(5rem, 8vw, 8rem)/1 Georgia, serif; color: var(--accent); opacity: .25; }
.ol-quote p { position: relative; margin: 0; font-size: clamp(1.0625rem, .95rem + .45vw, 1.375rem); line-height: 1.95; text-align: center; color: var(--text); word-break: keep-all; }
.ol-cards { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; margin: 0; padding: 0; list-style: none; }
.ol-cards li { display: flex; flex-direction: column; gap: 14px; padding: 24px 20px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--line); }
.ol-cards .ol-n { font-size: 2.2rem; line-height: 1; }
.ol-cards p { margin: 0; line-height: 1.7; font-weight: 600; color: var(--text); }

/* ───── C ───── */
.ol-hero-dark { position: relative; overflow: hidden; margin-top: var(--header-h); padding: clamp(48px, 7vw, 96px) 0 clamp(64px, 8vw, 112px); background: var(--inv-bg); color: var(--inv-text); }
.ol-glow { position: absolute; inset: -20% -10% auto 30%; height: 140%; background: radial-gradient(40% 40% at 60% 40%, color-mix(in srgb, var(--accent) 40%, transparent), transparent 70%), radial-gradient(30% 30% at 85% 70%, color-mix(in srgb, var(--d2, var(--accent)) 35%, transparent), transparent 70%); pointer-events: none; }
.ol-hd-in { position: relative; display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.ol-hero-dark h1 { margin: var(--s4) 0; font-size: clamp(2.4rem, 1.4rem + 3.4vw, 4.4rem); line-height: 1.12; letter-spacing: -.03em; color: var(--inv-text); }
.ol-hero-dark .ol-sub, .ol-hero-dark .ol-crumb { color: var(--inv-text-2); }
.ol-hero-dark .ol-crumb [aria-current] { color: var(--inv-text); }
.ol-hero-dark .actions { margin-top: var(--s6); }
.ol-hd-media { position: relative; }
.ol-hd-media::before { content: ""; position: absolute; inset: 8% -4% -6% 6%; border-radius: 24px; background: var(--grad, var(--accent)); opacity: .35; filter: blur(40px); pointer-events: none; }
.ol-c-bg .container { max-width: 1000px; }
.ol-bg--hl { font-size: clamp(1.2rem, 1rem + .8vw, 1.75rem); line-height: 1.85; font-weight: 500; letter-spacing: -.01em; }
.ol-bg--hl mark { background: linear-gradient(transparent 62%, color-mix(in srgb, var(--accent) 28%, transparent) 62%); color: inherit; font-weight: 700; padding: 0 .1em; }
.ol-tiles { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; margin: 0; padding: 0; list-style: none; }
.ol-tiles li { position: relative; display: flex; flex-direction: column; padding: 28px 22px 26px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--line); transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease; }
.ol-tiles li:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.ol-ico { display: grid; place-items: center; width: 72px; height: 72px; margin-bottom: 18px; border-radius: 20px; background: color-mix(in srgb, var(--accent) 10%, var(--surface)); }
.ol-ico svg { width: 44px; height: 44px; fill: none; stroke: var(--text); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.ol-ico svg .f { fill: var(--accent); stroke: none; }
.ol-ico svg .bgf { fill: var(--surface); }
.ol-ico svg .ck { stroke: var(--accent); stroke-width: 4; stroke-dasharray: 40; stroke-dashoffset: 0; }
.ol-tiles li:hover .ol-ico svg .ck { animation: ol-ck .6s ease; }
@keyframes ol-ck { from { stroke-dashoffset: 40; } to { stroke-dashoffset: 0; } }
.ol-tiles .ol-n { position: absolute; top: 22px; right: 22px; font-size: 1.6rem; opacity: .9; }
.ol-tiles p { margin: 0; line-height: 1.7; font-weight: 600; color: var(--text); }
.ol-banner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--s5); padding: clamp(32px, 4vw, 56px) clamp(28px, 4vw, 64px); border-radius: var(--r-xl); background: var(--grad, var(--accent)); color: #fff; }
.ol-banner p { margin: 0; max-width: 720px; font-size: clamp(1.25rem, 1rem + 1vw, 1.9rem); font-weight: 800; line-height: 1.45; letter-spacing: -.01em; }
.btn--light { background: #fff; color: #0b0d17; border-color: #fff; }

/* ───── D ───── */
.ol-hero-split { padding: calc(var(--header-h) + clamp(48px, 7vw, 96px)) 0 clamp(40px, 5vw, 72px); border-bottom: 1px solid var(--line); }
.ol-hs-in { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(32px, 5vw, 80px); align-items: end; }
.ol-hero-split h1 { margin: var(--s5) 0 0; font-size: clamp(2.4rem, 1.4rem + 3.6vw, 4.8rem); line-height: 1.08; letter-spacing: -.035em; }
.ol-hero-split .ol-sub { color: var(--text); font-weight: 700; margin-bottom: var(--s4); }
.ol-bg--sm { font-size: var(--fs-md); color: var(--text-2); line-height: 1.85; }
.ow { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.ow-mock .if-mock { margin: 0; }
.ow-mock [data-pin] { transition: opacity .4s ease, box-shadow .4s ease, transform .4s ease; }
.ow-mock .if-mock[data-on] [data-pin] { opacity: .35; }
.ow-mock .if-mock[data-on="1"] [data-pin="1"], .ow-mock .if-mock[data-on="2"] [data-pin="2"], .ow-mock .if-mock[data-on="3"] [data-pin="3"],
.ow-mock .if-mock[data-on="4"] [data-pin="4"], .ow-mock .if-mock[data-on="5"] [data-pin="5"] { opacity: 1; box-shadow: 0 0 0 3px var(--accent), 0 16px 40px color-mix(in srgb, var(--accent) 30%, transparent); transform: scale(1.02); position: relative; z-index: 2; }
.ow-list { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.ow-i { position: relative; display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 12px; align-items: start; width: 100%; padding: 14px 16px; overflow: hidden; border-radius: var(--r-md); border: 1px solid var(--line); background: var(--surface); color: var(--text-2); font: inherit; font-size: var(--fs-sm); line-height: 1.6; text-align: left; cursor: pointer; word-break: keep-all; transition: color .3s, border-color .3s, background .3s; }
.ow-i .ol-n { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--line); color: var(--text-2); font-size: var(--fs-xs); }
.ow-i[aria-pressed="true"] { color: var(--text); font-weight: 600; border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); background: color-mix(in srgb, var(--accent) 6%, var(--surface)); }
.ow-i[aria-pressed="true"] .ol-n { background: var(--accent); border-color: var(--accent); color: #fff; }
.ow-i:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.ow-bar { position: absolute; left: 0; bottom: 0; height: 3px; width: 0; background: var(--accent); }
.ow.is-auto .ow-i[aria-pressed="true"] .ow-bar { animation: ow-bar var(--ow-t, 5.5s) linear forwards; }
@keyframes ow-bar { to { width: 100%; } }
.ow-pause { margin-top: 12px; padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line); background: transparent; color: var(--text-2); font: inherit; font-size: var(--fs-xs); font-weight: 600; cursor: pointer; }
.ow-pause:hover, .ow-pause:focus-visible { color: var(--text); border-color: var(--accent); }
.ol-d-reel { position: relative; padding: clamp(48px, 7vw, 96px) 0; background: var(--inv-bg); }
.ol-d-reel .ol-video { border: 1px solid var(--inv-line, rgba(255, 255, 255, .14)); }
.ol-close--big { max-width: 900px; margin: 0 auto; font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.5rem); line-height: 1.4; letter-spacing: -.02em; }

/* 반응형 */
@media (max-width: 1100px) {
  .ol-a-grid, .ol-a-split, .ol-hd-in, .ol-hs-in, .ow { grid-template-columns: minmax(0, 1fr); }
  .ol-cards, .ol-tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .ol-cards, .ol-tiles { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  .ol-tiles li, .ow-mock [data-pin] { transition: none; transform: none !important; }
  .ow-bar { display: none; }
}

/* ───── C·D 한 화면 (보이는 높이 650~950px 안에 전부) ───── */
.ol-fit { --pad: clamp(14px, 3.2vh, 44px); position: relative; overflow: hidden; display: flex; align-items: center; margin-top: var(--header-h); min-height: calc(100svh - var(--header-h)); padding: var(--pad) 0; }
.ol-fit > .container { width: 100%; }
.ol-fit h1 { margin: clamp(6px, 1.2vh, 14px) 0 clamp(8px, 1.6vh, 18px); font-size: clamp(1.8rem, min(4vw, 6.2vh), 3.6rem); line-height: 1.1; letter-spacing: -.03em; }
.ol-fit .ol-sub { font-size: clamp(.875rem, 2vh, 1.0625rem); line-height: 1.6; }
.ol-tag { margin: 0; font-size: clamp(1rem, 2.5vh, 1.375rem); font-weight: 800; line-height: 1.35; letter-spacing: -.01em; word-break: keep-all; }
.vt-icon { width: 32px; padding: 0; justify-content: center; }
.vt-icon span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* C */
.ol-fit--dark { background: var(--inv-bg); color: var(--inv-text); }
.ol-fit--dark h1 { color: var(--inv-text); }
.ol-fit--dark .ol-sub, .ol-fit--dark .ol-crumb { color: var(--inv-text-2); }
.ol-fit--dark .ol-crumb [aria-current], .ol-fit--dark .ol-tag { color: var(--inv-text); }
.ol-fc { position: relative; display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: clamp(24px, 3.4vw, 64px); align-items: center; }
.ol-mini { display: grid; gap: clamp(6px, 1.2vh, 12px); margin: clamp(12px, 2.6vh, 28px) 0; padding: 0; list-style: none; }
.ol-mini li { position: relative; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 14px; align-items: center; }
.ol-mini .ol-ico { width: clamp(34px, 5.4vh, 46px); height: clamp(34px, 5.4vh, 46px); margin: 0; border-radius: 12px; background: rgba(255, 255, 255, .07); border: 1px solid var(--inv-line, rgba(255, 255, 255, .12)); }
.ol-mini .ol-ico svg { width: 62%; height: 62%; stroke: var(--inv-text); }
.ol-mini .ol-ico svg .bgf { fill: var(--inv-bg); }
.ol-mini .ol-n { position: absolute; left: calc(clamp(34px, 5.4vh, 46px) - 9px); top: -5px; display: grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 11px; }
.ol-mini .t { font-size: clamp(.875rem, 2.1vh, 1.0625rem); font-weight: 600; color: var(--inv-text); }
.ol-fc-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 20px; padding-top: clamp(10px, 2vh, 20px); border-top: 1px solid var(--inv-line, rgba(255, 255, 255, .12)); }
.ol-fc-foot .ol-tag { flex: 1 1 220px; }
.ol-fc-media { position: relative; display: flex; justify-content: center; }
.ol-fc-media::before { content: ""; position: absolute; inset: 10% 0 -4% 8%; border-radius: 24px; background: var(--grad, var(--accent)); opacity: .32; filter: blur(44px); pointer-events: none; }
.ol-fc-media .ol-video { width: min(100%, calc((100svh - var(--header-h) - 2 * var(--pad) - 40px) * 16 / 9)); }

/* D */
.ol-fit--light { background: radial-gradient(70% 60% at 85% 0%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 70%), var(--bg); }
.ol-fd { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; gap: clamp(10px, 2.2vh, 28px); height: calc(100svh - var(--header-h) - 2 * var(--pad)); }
.ol-fd-top { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(20px, 4vw, 64px); align-items: end; }
.ol-fd-top h1 { margin-bottom: 0; }
.ol-fd-top .ol-sub { margin-bottom: 6px; color: var(--text); font-weight: 700; }
.ol-bg--xs { font-size: clamp(.8125rem, 1.8vh, .9375rem); line-height: 1.65; color: var(--text-2); }
.ow--fit { min-height: 0; grid-template-columns: minmax(0, 1fr) clamp(250px, 24vw, 360px); align-items: stretch; gap: clamp(16px, 2.4vw, 36px); }
.ow-media { min-height: 0; height: 100%; container-type: size; display: grid; place-items: center start; }
.ow-media .ol-video { width: min(100cqw, 100cqh * 16 / 9); border-radius: var(--r-lg); border: 1px solid var(--line); box-shadow: var(--shadow-lg); }
.ow--fit .ow-side { display: flex; flex-direction: column; justify-content: center; min-height: 0; }
.ow--fit .ow-list { gap: clamp(5px, 1vh, 10px); }
.ow--fit .ow-i { padding: clamp(8px, 1.5vh, 14px) 14px; font-size: clamp(.8125rem, 1.9vh, .9375rem); align-items: center; }
.ow-pause { display: inline-grid; place-items: center; width: 32px; height: 32px; padding: 0; align-self: flex-start; }
.ow-pause svg { width: 12px; height: 12px; }
.oz { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.oz-z { position: absolute; border-radius: 8px; opacity: 0; box-shadow: 0 0 0 2px var(--accent), 0 0 0 9999px rgba(5, 7, 15, .5); transition: opacity .45s ease; }
.oz-z b { position: absolute; left: -11px; top: -11px; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 12px; font-weight: 800; box-shadow: 0 4px 12px rgba(0, 0, 0, .35); }
.oz[data-on="1"] [data-z="1"], .oz[data-on="2"] [data-z="2"], .oz[data-on="3"] [data-z="3"], .oz[data-on="4"] [data-z="4"], .oz[data-on="5"] [data-z="5"] { opacity: 1; }
.ol-fd-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; padding-top: clamp(8px, 1.6vh, 18px); border-top: 1px solid var(--line); }

@media (max-width: 1100px) {
  .ol-fit { min-height: 0; display: block; }
  .ol-fc, .ol-fd-top, .ow--fit { grid-template-columns: minmax(0, 1fr); }
  .ol-fd { height: auto; grid-template-rows: none; }
  .ow-media { container-type: inline-size; height: auto; }
  .ow-media .ol-video, .ol-fc-media .ol-video { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { .oz-z { transition: none; } }

/* ───── A~D 공통: 실제 대시보드 화면(1~5 메뉴로 전환, 자동 재생 없음) ───── */
.st { position: relative; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 12px; background: #0b0d17; border: 1px solid var(--line); box-shadow: var(--shadow-lg); }
.st > img, .st > video { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; }
.st > [hidden] { display: none; }
.st-btn { position: absolute; right: 12px; bottom: 12px; z-index: 2; display: grid; place-items: center; width: 36px; height: 36px; padding: 0; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .35); background: rgba(8, 10, 18, .72); color: #fff; cursor: pointer; }
.st-btn svg { width: 13px; height: 13px; overflow: visible; }
.st-btn:hover { background: rgba(8, 10, 18, .9); }
.st-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.st-fit { min-height: 0; height: 100%; container-type: size; display: grid; place-items: center; }
.st-fit .st { width: min(100cqw, 100cqh * 16 / 9); }
.st-go { width: 14px; height: 14px; flex: none; opacity: .35; transition: transform .25s ease, opacity .25s ease, color .25s ease; }
[data-step]:hover .st-go { opacity: .8; transform: translateX(2px); }
[data-step][aria-pressed="true"] .st-go { opacity: 1; color: var(--accent); }
.is-nudge [data-step="2"] .st-go { opacity: 1; color: var(--accent); animation: st-nudge 1.6s ease-in-out infinite; }
@keyframes st-nudge { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(5px); } }
[data-step] { cursor: pointer; }
[data-step]:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* A: 어두운 바탕 · 왼쪽 메뉴(누르면 설명 펼침) | 오른쪽 화면 · 아래 Why/So */
.oa { display: grid; grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr); grid-template-rows: minmax(0, 1fr) auto; gap: clamp(14px, 2.6vh, 32px) clamp(28px, 3.6vw, 64px); height: calc(100svh - var(--header-h) - 2 * var(--pad)); }
.oa-l { display: flex; flex-direction: column; justify-content: center; min-height: 0; }
.ol-fa h1 { margin: clamp(6px, 1.2vh, 14px) 0 clamp(6px, 1.2vh, 12px); font-size: clamp(1.6rem, min(2.9vw, 5.4vh), 3rem); }
.oa-l .ol-sub { font-size: clamp(.8125rem, 1.9vh, 1rem); }
.oa-cap { margin: clamp(12px, 3vh, 36px) 0 clamp(4px, .8vh, 8px); font-size: clamp(.75rem, 1.7vh, .875rem); font-weight: 600; color: var(--inv-text-2); }
.oa-menu { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255, 255, 255, .12); }
.oa-i { display: grid; grid-template-columns: 34px minmax(0, 1fr) 16px; align-items: center; column-gap: 8px; width: 100%; padding: clamp(7px, 1.35vh, 13px) 0; border: 0; border-bottom: 1px solid rgba(255, 255, 255, .12); background: none; color: var(--inv-text-2); font: inherit; text-align: left; word-break: keep-all; }
.oa-n { font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: .04em; }
.oa-t { font-size: clamp(.875rem, 2vh, 1.0625rem); font-weight: 600; transition: color .25s; }
.oa-d { display: none; grid-column: 2 / 3; margin-top: 4px; font-size: clamp(.75rem, 1.7vh, .875rem); line-height: 1.55; color: var(--inv-text-2); }
.oa-i:hover .oa-t, .oa-i[aria-pressed="true"] .oa-t { color: var(--inv-text); }
.oa-i[aria-pressed="true"] .oa-n { color: var(--accent); }
.oa-i[aria-pressed="true"] .oa-d { display: block; }
.oa-r { position: relative; }
.ol-fa .st { border-color: rgba(255, 255, 255, .14); box-shadow: 0 30px 80px rgba(0, 0, 0, .45); }
.oa-foot { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) auto; align-items: end; gap: clamp(20px, 3vw, 56px); padding-top: clamp(10px, 2vh, 22px); border-top: 1px solid rgba(255, 255, 255, .12); }
.oa-foot h2 { margin: 0 0 4px; font-size: clamp(.9375rem, 2.2vh, 1.125rem); color: var(--inv-text); word-break: keep-all; }
.oa-foot p { margin: 0; font-size: clamp(.75rem, 1.65vh, .875rem); line-height: 1.6; color: var(--inv-text-2); word-break: keep-all; }

/* B: 밝은 바탕 · 1~5 탭 → 화면 | 고른 단계 설명 + 배경 · 맺음 띠 */
.ob { display: grid; grid-template-rows: auto auto minmax(0, 1fr) auto; gap: clamp(10px, 2.2vh, 26px); height: calc(100svh - var(--header-h) - 2 * var(--pad)); }
.ob-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(20px, 4vw, 64px); align-items: end; }
.ob-top h1 { margin-bottom: 0; }
.ob-top .ol-sub { color: var(--text); font-weight: 600; }
.ob-cap { margin: 0 0 clamp(2px, .6vh, 6px); font-size: clamp(.75rem, 1.7vh, .875rem); font-weight: 600; color: var(--text-2); }
.ob-tabs { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); margin: 0; padding: 0; list-style: none; border-bottom: 1px solid var(--line); }
.ob-tab { position: relative; display: grid; grid-template-columns: auto 1fr auto; align-items: center; column-gap: 8px; width: 100%; padding: clamp(8px, 1.5vh, 14px) 12px clamp(8px, 1.5vh, 14px) 0; border: 0; background: none; color: var(--text-2); font: inherit; text-align: left; word-break: keep-all; }
.ob-tab::after { content: ""; position: absolute; left: 0; right: 12px; bottom: -1px; height: 2px; background: transparent; transition: background .25s; }
.ob-n { font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; }
.ob-en { display: none; }
.ob-t { font-size: clamp(.8125rem, 1.9vh, 1rem); font-weight: 600; }
.ob-tab .st-go { grid-column: 3; }
.ob-tab:hover { color: var(--text); }
.ob-tab[aria-pressed="true"] { color: var(--text); }
.ob-tab[aria-pressed="true"] .ob-n { color: var(--accent); }
.ob-tab[aria-pressed="true"]::after { background: var(--accent); }
.ob-body { display: grid; grid-template-columns: auto minmax(260px, 1fr); gap: clamp(20px, 3vw, 56px); min-height: 0; }
.ob-body > .st-fit { width: min(calc((100svh - var(--header-h) - 2 * var(--pad)) * .62 * 16 / 9), 64vw, 1000px); place-items: center start; }
.ob-side { display: flex; flex-direction: column; justify-content: space-between; gap: 16px; min-height: 0; }
.ob-pn { display: block; font-size: 12px; font-weight: 700; color: var(--accent); }
.ob-pane h3 { margin: 4px 0 clamp(4px, 1vh, 10px); font-size: clamp(1.125rem, 3.2vh, 1.75rem); line-height: 1.3; letter-spacing: -.02em; word-break: keep-all; }
.ob-pane p { margin: 0; font-size: clamp(.8125rem, 2vh, 1rem); line-height: 1.65; color: var(--text-2); word-break: keep-all; }
.ob-why { padding-top: clamp(8px, 1.6vh, 16px); border-top: 1px solid var(--line); }
.ob-why h2 { margin: 0 0 4px; font-size: clamp(.875rem, 2vh, 1rem); }
.ob-why p { margin: 0; font-size: clamp(.75rem, 1.6vh, .8125rem); line-height: 1.6; color: var(--text-2); word-break: keep-all; }
.ob-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 24px; padding-top: clamp(8px, 1.6vh, 16px); border-top: 1px solid var(--line); }
.ob-foot h2 { margin: 0; font-size: clamp(.9375rem, 2.3vh, 1.25rem); line-height: 1.3; }
.ob-foot p { margin: 2px 0 0; font-size: clamp(.75rem, 1.6vh, .875rem); color: var(--text-2); }

/* C: 메뉴 버튼 + 브라우저 틀 화면 */
.ol-mini li { display: block; }
.oc-i { position: relative; display: grid; grid-template-columns: auto minmax(0, 1fr) 16px; gap: 14px; align-items: center; width: 100%; padding: 5px 12px 5px 5px; border: 1px solid transparent; border-radius: 14px; background: none; color: var(--inv-text); font: inherit; text-align: left; transition: background .25s, border-color .25s; }
.oc-i:hover { background: rgba(255, 255, 255, .04); }
.oc-i[aria-pressed="true"] { background: rgba(255, 255, 255, .07); border-color: rgba(255, 255, 255, .16); }
.oc-i[aria-pressed="true"] .ol-ico { border-color: var(--accent); }
.ol-mini .oc-i .ol-n { left: calc(clamp(34px, 5.4vh, 46px) - 4px); top: -1px; }
.oc-frame { position: relative; width: min(100%, calc((100svh - var(--header-h) - 2 * var(--pad) - 70px) * 16 / 9)); padding-top: 30px; border-radius: 14px; border: 1px solid rgba(255, 255, 255, .14); background: #151826; box-shadow: 0 30px 80px rgba(0, 0, 0, .45); }
.oc-frame::before { content: ""; position: absolute; top: 11px; left: 14px; width: 8px; height: 8px; border-radius: 50%; background: #ff5f57; box-shadow: 14px 0 #febc2e, 28px 0 #28c840; }
.oc-frame .st { border: 0; border-radius: 0 0 13px 13px; box-shadow: none; }

/* D: 메뉴 버튼에 화살표 */
.ow--fit .ow-i { grid-template-columns: 34px minmax(0, 1fr) 16px; }
.ow-media.st-fit { place-items: center start; }

@media (max-width: 1100px) {
  .oa, .ob { height: auto; grid-template-columns: minmax(0, 1fr); grid-template-rows: none; }
  .oa-foot, .ob-top, .ob-body { grid-template-columns: minmax(0, 1fr); }
  .st-fit { container-type: inline-size; height: auto; }
  .st-fit .st, .ob-body > .st-fit { width: 100%; }
  .ob-tabs { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
  .oc-frame { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { .is-nudge [data-step="2"] .st-go { animation: none; } .st-go, .oa-t, .oc-i, .ob-tab::after { transition: none; } }

/* 영상 끝: 연한 검은 막 + 가운데 다시 보기 버튼 (old.js) */
.st-end { position: absolute; inset: 0; z-index: 3; display: grid; place-content: center; justify-items: center; gap: 10px; width: 100%; padding: 0; border: 0; background: rgba(8, 10, 18, .45); color: #fff; font: inherit; cursor: pointer; animation: st-end-in .4s ease-out; }
.st-end[hidden] { display: none; }
.st-end-ic { display: grid; place-items: center; width: clamp(52px, 9cqw, 76px); aspect-ratio: 1; border-radius: 50%; border: 2px solid rgba(255, 255, 255, .85); background: rgba(255, 255, 255, .14); backdrop-filter: blur(4px); transition: transform .2s ease, background .2s ease; }
.st-end-ic svg { width: 50%; height: 50%; }
.st-end-t { font-size: clamp(.8125rem, 1.6cqw, 1rem); font-weight: 700; letter-spacing: .02em; text-shadow: 0 1px 6px rgba(0, 0, 0, .5); }
.st-end:hover .st-end-ic, .st-end:focus-visible .st-end-ic { transform: scale(1.08); background: var(--accent); border-color: var(--accent); }
.st-end:focus-visible { outline: 2px solid var(--accent); outline-offset: -4px; }
@keyframes st-end-in { from { opacity: 0; } to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .st-end, .st-end-ic { animation: none; transition: none; } }