/* OpenPlay marketing site — dark-first, light via prefers-color-scheme. No external fonts. */
:root {
  --bg: #07080c; --bg-1: #0c0e15; --bg-2: #11141d;
  --surface: rgba(255,255,255,.028); --surface-2: rgba(255,255,255,.055); --surface-3: rgba(255,255,255,.09);
  --line: rgba(255,255,255,.075); --line-2: rgba(255,255,255,.13);
  --fg: #f4f5f8; --fg-2: #b2b7c6; --fg-3: #7b8195;
  --violet: #8b5cff; --cyan: #1fc8e6; --pink: #ff5fa8; --kakao: #fee500; --kakao-ink: #fee500;
  --ok: #34d399; --bad: #fb7185;
  --grad: linear-gradient(135deg, #a27bff 0%, #8b5cff 35%, #1fc8e6 100%);
  --shadow-lg: 0 40px 120px -30px rgba(0,0,0,.8), 0 0 0 1px rgba(255,255,255,.06);
  --card-shadow: inset 0 1px 0 rgba(255,255,255,.05);
  --title-grad: linear-gradient(180deg, #fff 20%, #b9bdd0 100%);
  --max: 1200px; --gut: max(20px, calc((100% - var(--max)) / 2));
  --r: 22px;
  --font: Inter, "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI Variable Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", "Hiragino Sans", "Yu Gothic UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK KR", "Noto Sans", system-ui, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #fbfbfd; --bg-1: #ffffff; --bg-2: #f3f4f8;
    --surface: rgba(12,16,32,.022); --surface-2: rgba(12,16,32,.045); --surface-3: rgba(12,16,32,.075);
    --line: rgba(12,16,32,.085); --line-2: rgba(12,16,32,.15);
    --fg: #0a0c14; --fg-2: #4b5165; --fg-3: #7b8195;
    --kakao-ink: #8a6a00; --ok: #059669; --bad: #e11d48;
    --shadow-lg: 0 40px 100px -30px rgba(30,20,80,.35), 0 0 0 1px rgba(12,16,32,.08);
    --card-shadow: 0 1px 2px rgba(12,16,32,.04), inset 0 1px 0 #fff;
    --title-grad: linear-gradient(180deg, #0a0c14 30%, #3d4258 100%);
    color-scheme: light;
  }
}
/* language-specific type: CJK fonts first, gentler tracking */
:lang(ko) { --font: Inter, "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", "Noto Sans CJK KR", -apple-system, "Segoe UI", system-ui, sans-serif; }
:lang(ja) { --font: Inter, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Meiryo", "Noto Sans JP", "Noto Sans CJK JP", -apple-system, "Segoe UI", system-ui, sans-serif; }
:lang(zh-CN) { --font: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Noto Sans CJK SC", -apple-system, "Segoe UI", system-ui, sans-serif; }
:lang(zh-TW) { --font: Inter, "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Noto Sans CJK TC", -apple-system, "Segoe UI", system-ui, sans-serif; }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 400 16.5px/1.62 var(--font); font-feature-settings: "cv11", "ss01", "ss03"; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; overflow-wrap: break-word; line-break: strict; overflow-x: hidden; }
:lang(ko) body { word-break: keep-all; }
:lang(ko) body, :lang(ja) body, :lang(zh-CN) body, :lang(zh-TW) body { line-height: 1.72; }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }
::selection { background: color-mix(in srgb, var(--violet) 40%, transparent); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 10px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.i { width: 18px; height: 18px; flex: none; }
.center { justify-content: center; text-align: center; }

/* ---------- buttons ---------- */
.btn { --h: 44px; position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: var(--h); padding: 0 18px; border-radius: 999px; font: 600 15px/1.1 var(--font); letter-spacing: -.005em; text-decoration: none; white-space: nowrap; border: 1px solid transparent; transition: transform .18s cubic-bezier(.2,.8,.2,1), box-shadow .18s, background-color .18s, border-color .18s; }
.btn .i { width: 17px; height: 17px; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(.98); }
.btn-lg { --h: 52px; padding: 0 24px; font-size: 16px; }
.btn-sm { --h: 36px; padding: 0 14px; font-size: 14px; }
.btn-sm .i { width: 15px; height: 15px; }
.btn-primary { color: #fff; background: var(--grad); box-shadow: 0 10px 30px -8px rgba(139,92,255,.65), inset 0 1px 0 rgba(255,255,255,.28), inset 0 -1px 0 rgba(0,0,0,.15); }
.btn-primary:hover { box-shadow: 0 16px 40px -8px rgba(139,92,255,.75), inset 0 1px 0 rgba(255,255,255,.3); }
.btn-ghost { color: var(--fg); background: var(--surface-2); border-color: var(--line-2); backdrop-filter: blur(12px); }
.btn-ghost:hover { background: var(--surface-3); }
.btn-light { color: #0a0c14; background: #fff; box-shadow: 0 8px 24px -10px rgba(0,0,0,.5); }
@media (prefers-color-scheme: light) { .nav .btn-light { color: #fff; background: #0a0c14; } }
.btn-glass { color: #fff; background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.22); backdrop-filter: blur(12px); }
.btn-glass:hover { background: rgba(255,255,255,.16); }
.btn-kakao { color: #1a1600; background: var(--kakao); box-shadow: 0 10px 30px -10px rgba(254,229,0,.55), inset 0 1px 0 rgba(255,255,255,.5); }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 72%, transparent); backdrop-filter: blur(18px) saturate(170%); -webkit-backdrop-filter: blur(18px) saturate(170%); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; gap: 28px; height: 64px; padding: 0 var(--gut); }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 17px; letter-spacing: -.02em; color: var(--fg); }
.logo img { border-radius: 8px; box-shadow: 0 4px 14px -4px rgba(139,92,255,.6); }
.nav-links { display: flex; gap: 4px; flex: 1; }
.nav-links a { padding: 7px 12px; border-radius: 999px; color: var(--fg-2); text-decoration: none; font-size: 14.5px; font-weight: 500; transition: color .15s, background-color .15s; }
.nav-links a:hover, .nav-links a[aria-current] { color: var(--fg); background: var(--surface-2); }
.langs { position: relative; margin-left: auto; }
.langs summary { display: flex; align-items: center; gap: 7px; height: 36px; padding: 0 12px; border-radius: 999px; cursor: pointer; list-style: none; color: var(--fg-2); font-size: 14px; font-weight: 500; border: 1px solid var(--line); transition: color .15s, border-color .15s; }
.langs summary:hover, .langs[open] summary { color: var(--fg); border-color: var(--line-2); }
.langs summary::-webkit-details-marker { display: none; }
.langs summary .i { width: 16px; height: 16px; }
.langs-code { display: none; font-family: var(--mono); font-size: 12px; }
.langs ul { position: absolute; right: 0; top: calc(100% + 10px); z-index: 60; display: grid; grid-template-columns: 1fr 1fr; gap: 2px; width: 340px; margin: 0; padding: 8px; list-style: none; border-radius: 18px; background: color-mix(in srgb, var(--bg-1) 92%, transparent); backdrop-filter: blur(20px); border: 1px solid var(--line-2); box-shadow: 0 30px 80px -20px rgba(0,0,0,.55); }
.langs li a { display: flex; align-items: center; justify-content: space-between; padding: 9px 12px; border-radius: 11px; color: var(--fg-2); text-decoration: none; font-size: 14px; }
.langs li a:hover { background: var(--surface-2); color: var(--fg); }
.langs li a[aria-current] { color: var(--fg); background: var(--surface-2); }
.langs li a .i { width: 15px; height: 15px; color: var(--violet); }

/* ---------- section scaffolding ---------- */
.sec { position: relative; padding: 112px var(--gut); }
.sec-head { max-width: 800px; margin: 0 auto 56px; text-align: center; }
.sec-head h2, .faq-side h2, .final h2 { margin: 0; font-size: clamp(32px, 4.6vw, 56px); line-height: 1.06; letter-spacing: -.04em; font-weight: 700; background: var(--title-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
:lang(ko) .sec-head h2, :lang(ja) .sec-head h2, :lang(zh-CN) .sec-head h2, :lang(zh-TW) .sec-head h2, :lang(ko) .faq-side h2, :lang(ja) .faq-side h2, :lang(zh-CN) .faq-side h2, :lang(zh-TW) .faq-side h2, :lang(ko) .final h2, :lang(ja) .final h2, :lang(zh-CN) .final h2, :lang(zh-TW) .final h2 { line-height: 1.24; letter-spacing: -.025em; }
.sec-lead { margin: 20px auto 0; max-width: 640px; color: var(--fg-2); font-size: clamp(16.5px, 1.5vw, 19px); }
.kicker { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 18px; color: var(--fg-2); font: 600 13px/1 var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.kicker .i { width: 15px; height: 15px; color: var(--violet); }
.kicker.kakao, .kicker.kakao .i { color: var(--kakao-ink); }

/* ---------- hero ---------- */
.hero { position: relative; isolation: isolate; padding: 80px var(--gut) 96px; text-align: center; overflow: hidden; }
.hero-bg { position: absolute; inset: -10% -10% 0; z-index: -1; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .55; will-change: transform; }
.o1 { width: 620px; height: 620px; left: 12%; top: -260px; background: #6d3cff; animation: drift1 22s ease-in-out infinite alternate; }
.o2 { width: 520px; height: 520px; right: 8%; top: -160px; background: #12b5d8; opacity: .38; animation: drift2 26s ease-in-out infinite alternate; }
.o3 { width: 460px; height: 460px; left: 42%; top: 240px; background: #d6409f; opacity: .22; animation: drift1 30s ease-in-out infinite alternate-reverse; }
.grid-lines { position: absolute; inset: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 64px 64px; mask-image: radial-gradient(ellipse 70% 55% at 50% 22%, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 70% 55% at 50% 22%, #000 30%, transparent 75%); opacity: .6; }
@media (prefers-color-scheme: light) { .orb { opacity: .28; } .o2 { opacity: .22; } .o3 { opacity: .12; } }
@keyframes drift1 { to { transform: translate3d(90px, 50px, 0) scale(1.12); } }
@keyframes drift2 { to { transform: translate3d(-110px, 70px, 0) scale(.92); } }
.hero-copy { max-width: 980px; margin: 0 auto; }
.eyebrow { display: inline-flex; align-items: center; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 30px; padding: 7px 14px 7px 12px; border-radius: 999px; text-decoration: none; color: var(--fg-2); font-size: 13.5px; font-weight: 500; background: var(--surface-2); border: 1px solid var(--line-2); box-shadow: 0 0 0 4px color-mix(in srgb, var(--kakao) 5%, transparent); backdrop-filter: blur(10px); transition: border-color .2s, color .2s; }
.eyebrow:hover { color: var(--fg); border-color: color-mix(in srgb, var(--kakao) 45%, transparent); }
.eyebrow > i { width: 3px; height: 3px; border-radius: 50%; background: var(--fg-3); }
.eyebrow .i { width: 14px; height: 14px; color: var(--fg-3); }
.eyebrow-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--kakao); box-shadow: 0 0 0 3px color-mix(in srgb, var(--kakao) 25%, transparent), 0 0 12px var(--kakao); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--kakao) 0%, transparent), 0 0 12px var(--kakao); } }
.hero h1 { margin: 0 auto; max-width: 13ch; font-size: clamp(46px, 8.2vw, 104px); line-height: 1; letter-spacing: -.045em; font-weight: 700; background: var(--title-grad); -webkit-background-clip: text; background-clip: text; color: transparent; padding-bottom: .06em; }
:lang(ko) .hero h1, :lang(ja) .hero h1, :lang(zh-CN) .hero h1, :lang(zh-TW) .hero h1 { max-width: 16em; font-size: clamp(40px, 6.6vw, 84px); line-height: 1.16; letter-spacing: -.035em; }
:lang(ru) .hero h1, :lang(vi) .hero h1, :lang(id) .hero h1, :lang(de) .hero h1, :lang(fr) .hero h1, :lang(es) .hero h1, :lang(pt) .hero h1 { max-width: 16ch; font-size: clamp(40px, 7vw, 88px); }
.lead { margin: 26px auto 0; max-width: 640px; color: var(--fg-2); font-size: clamp(17px, 1.6vw, 20px); line-height: 1.6; }
.hero .ctas { justify-content: center; margin-top: 36px; }
.hero-note { display: inline-flex; align-items: center; gap: 7px; margin: 20px 0 0; color: var(--fg-3); font-size: 14px; }
.hero-note .i { width: 15px; height: 15px; color: var(--ok); }
.hero-visual { position: relative; max-width: 1120px; margin: 64px auto 0; }
.hero-visual::before { content: ""; position: absolute; left: 10%; right: 10%; top: 14%; bottom: 4%; z-index: -1; background: var(--grad); filter: blur(70px); opacity: .32; border-radius: 50%; }

/* ---------- player mock ---------- */
.mock { position: relative; text-align: left; border-radius: 18px; background: #0b0c12; border: 1px solid rgba(255,255,255,.1); box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,.08); overflow: hidden; color: #e9eaf0; animation: rise 1.1s cubic-bezier(.2,.8,.2,1) both .1s; }
@keyframes rise { from { opacity: 0; transform: translateY(36px) scale(.98); } }
.mock-bar { display: flex; align-items: center; gap: 14px; height: 40px; padding: 0 14px; background: linear-gradient(#15171f, #101219); border-bottom: 1px solid rgba(255,255,255,.07); font-size: 12.5px; color: #9aa0b4; }
.mock-dots { display: flex; gap: 7px; } .mock-dots i { width: 11px; height: 11px; border-radius: 50%; background: #2b2e3a; }
.mock-dots i:first-child { background: #ff5f57; } .mock-dots i:nth-child(2) { background: #febc2e; } .mock-dots i:nth-child(3) { background: #28c840; }
.mock-title { display: flex; align-items: center; gap: 8px; flex: 1; justify-content: center; font-family: var(--mono); font-size: 12px; overflow: hidden; white-space: nowrap; }
.mock-title img { border-radius: 4px; }
.mock-pill { padding: 3px 9px; border-radius: 999px; background: rgba(52,211,153,.12); color: #6ee7b7; font: 600 11px/1.4 var(--mono); border: 1px solid rgba(52,211,153,.25); white-space: nowrap; }
.mock-body { display: grid; grid-template-columns: 1fr 280px; }
.mock-stage { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #000; container-type: inline-size; }
.mock-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scale(1.04); animation: kenburns 24s ease-in-out infinite alternate; }
@keyframes kenburns { to { transform: scale(1.12) translate(-1.5%, -1%); } }
.mock-stage::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.25), transparent 25%, transparent 55%, rgba(0,0,0,.75)); }
.mock-chip { position: absolute; z-index: 2; top: 14px; left: 14px; display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px 5px 8px; border-radius: 999px; background: rgba(10,12,20,.55); border: 1px solid rgba(255,255,255,.16); backdrop-filter: blur(10px); font: 600 11.5px/1 var(--mono); color: #fff; }
.mock-chip .i { width: 13px; height: 13px; color: #34d399; stroke-width: 2.4; }
.mock-note { position: absolute; z-index: 2; top: 14px; right: 14px; display: inline-flex; align-items: center; gap: 8px; max-width: 46%; padding: 7px 12px 7px 9px; border-radius: 12px; background: rgba(139,92,255,.28); border: 1px solid rgba(180,150,255,.38); backdrop-filter: blur(12px); font-size: 12.5px; color: #fff; }
.mock-note .i { width: 15px; height: 15px; } .mock-note b { font: 600 11.5px var(--mono); color: #d8ccff; } .mock-note span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mock-sub { position: absolute; z-index: 2; left: 0; right: 0; bottom: 92px; margin: 0; text-align: center; padding: 0 8%; }
.mock-sub span { display: inline-block; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; vertical-align: bottom; padding: 3px 10px; border-radius: 6px; background: rgba(0,0,0,.55); color: #fff; font-size: clamp(12px, 2.4cqi, 20px); font-weight: 500; line-height: 1.7; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.mock-ctrl { position: absolute; z-index: 2; left: 14px; right: 14px; bottom: 14px; padding: 12px 14px 10px; border-radius: 14px; background: rgba(12,14,22,.6); border: 1px solid rgba(255,255,255,.1); backdrop-filter: blur(16px) saturate(140%); }
.mock-track { position: relative; height: 5px; border-radius: 99px; background: rgba(255,255,255,.18); margin: 2px 0 12px; }
.mock-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 38%; border-radius: inherit; background: var(--grad); animation: grow 14s linear infinite; }
@keyframes grow { from { width: 36%; } to { width: 44%; } }
.mock-head { position: absolute; top: 50%; left: 38%; width: 13px; height: 13px; margin: -6.5px 0 0 -6.5px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 4px rgba(139,92,255,.35); animation: head 14s linear infinite; }
@keyframes head { from { left: 36%; } to { left: 44%; } }
.mock-track > i { position: absolute; top: -3px; width: 3px; height: 11px; border-radius: 2px; background: #fee500; }
.mock-ab { position: absolute; left: 30%; width: 22%; top: -5px; bottom: -5px; border-radius: 6px; background: rgba(31,200,230,.18); border: 1px solid rgba(31,200,230,.55); display: flex; justify-content: space-between; }
.mock-ab b { position: relative; top: -18px; font: 700 9.5px/1 var(--mono); color: #7ee6f6; padding: 0 2px; }
.mock-row { display: flex; align-items: center; gap: 14px; color: #dfe2ec; }
.mock-row > .i { width: 17px; height: 17px; opacity: .85; }
.mock-play { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: #fff; color: #0b0c12; flex: none; }
.mock-play .i { width: 14px; height: 14px; }
.mock-time { font: 500 12px var(--mono); color: #fff; white-space: nowrap; } .mock-time em { font-style: normal; color: #8f95a8; }
.mock-gap { flex: 1; }
.kbd { display: inline-flex; align-items: center; height: 22px; padding: 0 7px; border-radius: 6px; border: 1px solid rgba(255,255,255,.16); background: rgba(255,255,255,.06); font: 600 11px var(--mono); color: #dfe2ec; }
.kbd .i { width: 15px; height: 15px; }
.mock-side { border-left: 1px solid rgba(255,255,255,.07); background: #0e1017; padding: 14px 10px; }
.mock-side-h { display: flex; align-items: center; gap: 8px; margin: 0 6px 10px; font-size: 12.5px; font-weight: 600; color: #c9ccd8; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock-side-h .i { width: 15px; height: 15px; color: #8b5cff; }
.mock-side ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.mock-side li { position: relative; display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: 10px; }
.mock-side li.on { background: rgba(139,92,255,.14); box-shadow: inset 0 0 0 1px rgba(139,92,255,.3); }
.mock-thumb { position: relative; flex: none; width: 52px; height: 32px; border-radius: 6px; overflow: hidden; background: linear-gradient(135deg, #2b1758, #e0735a); display: grid; place-items: center; }
.mock-thumb.t1 { background: linear-gradient(135deg, #0f4c5c, #1fc8e6); } .mock-thumb.t2 { background: linear-gradient(135deg, #2a2f45, #6b7393); } .mock-thumb.t3 { background: linear-gradient(135deg, #5b1f63, #ff5fa8); } .mock-thumb.t4 { background: linear-gradient(135deg, #3d2a12, #f2a65a); }
.mock-fn { min-width: 0; display: grid; font: 500 11.5px/1.35 var(--mono); color: #d7dae4; white-space: nowrap; }
.mock-fn { overflow: hidden; text-overflow: ellipsis; } .mock-fn small { color: #7b8195; font-size: 10.5px; }
.mock-prog { position: absolute; left: 70px; right: 10px; bottom: 4px; height: 2px; border-radius: 2px; background: rgba(255,255,255,.08); } .mock-prog i { display: block; height: 100%; border-radius: inherit; background: #8b5cff; }
.eq { display: flex; align-items: flex-end; gap: 2px; height: 14px; } .eq i { width: 3px; background: #fff; border-radius: 1px; animation: eq 1s ease-in-out infinite alternate; }
.eq i:nth-child(1) { height: 40%; } .eq i:nth-child(2) { height: 100%; animation-delay: -.4s; } .eq i:nth-child(3) { height: 65%; animation-delay: -.7s; }
@keyframes eq { to { transform: scaleY(.35); } }
.eq i { transform-origin: bottom; }
.float { position: absolute; z-index: 3; display: flex; align-items: center; gap: 12px; padding: 12px 16px 12px 12px; border-radius: 16px; text-align: left; background: color-mix(in srgb, var(--bg-1) 78%, transparent); border: 1px solid var(--line-2); backdrop-filter: blur(18px) saturate(160%); box-shadow: 0 24px 60px -20px rgba(0,0,0,.55); animation: bob 7s ease-in-out infinite alternate; }
.float b { display: block; font-size: 14px; font-weight: 600; } .float small { display: block; color: var(--fg-3); font-size: 12.5px; }
.float-ic { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; color: #fff; background: var(--grad); }
.f-left { left: -44px; top: 34%; } .f-right { right: -40px; bottom: 18%; animation-delay: -3.5s; }
.f-right .float-ic { background: linear-gradient(135deg, #10b981, #1fc8e6); }
@keyframes bob { to { transform: translateY(-12px); } }

/* ---------- promises / trust strip ---------- */
.promises { padding: 24px var(--gut) 24px; }
.promise-row { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); box-shadow: var(--card-shadow); overflow: hidden; }
.promise { display: flex; gap: 14px; padding: 26px 24px; }
.promise + .promise { border-left: 1px solid var(--line); }
.promise h3 { margin: 2px 0 4px; font-size: 16px; font-weight: 600; letter-spacing: -.01em; }
.promise p { margin: 0; color: var(--fg-2); font-size: 14.5px; line-height: 1.55; }
.tile { display: grid; place-items: center; flex: none; width: 40px; height: 40px; border-radius: 12px; color: var(--violet); background: color-mix(in srgb, var(--violet) 12%, transparent); border: 1px solid color-mix(in srgb, var(--violet) 24%, transparent); }
.promise:nth-child(2) .tile { color: var(--cyan); background: color-mix(in srgb, var(--cyan) 12%, transparent); border-color: color-mix(in srgb, var(--cyan) 26%, transparent); }
.promise:nth-child(3) .tile { color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, transparent); border-color: color-mix(in srgb, var(--ok) 26%, transparent); }
.promise:nth-child(4) .tile { color: var(--pink); background: color-mix(in srgb, var(--pink) 12%, transparent); border-color: color-mix(in srgb, var(--pink) 26%, transparent); }
.marquee { margin-top: 40px; overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee-track { display: flex; width: max-content; animation: marquee 50s linear infinite; }
.marquee-track > span { display: flex; gap: 10px; padding-right: 10px; }
.marquee b { padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); color: var(--fg-3); font: 500 13px/1 var(--mono); white-space: nowrap; }
.marquee b:first-child { color: var(--kakao-ink); border-color: color-mix(in srgb, var(--kakao) 35%, transparent); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- bento ---------- */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.card { position: relative; display: flex; flex-direction: column; min-height: 300px; border-radius: var(--r); background: linear-gradient(180deg, var(--surface-2), var(--surface)); border: 1px solid var(--line); box-shadow: var(--card-shadow); overflow: hidden; transition: border-color .25s, transform .25s; }
.card:hover { border-color: var(--line-2); }
.card::before { content: ""; position: absolute; inset: 0; background: radial-gradient(500px 240px at 0% 0%, color-mix(in srgb, var(--violet) 10%, transparent), transparent 70%); pointer-events: none; }
.card-txt { position: relative; padding: 26px 26px 0; }
.card-ic { display: inline-grid; place-items: center; width: 34px; height: 34px; margin-bottom: 16px; border-radius: 10px; color: var(--fg); background: var(--surface-3); border: 1px solid var(--line); }
.card-ic .i { width: 17px; height: 17px; }
.card h3 { margin: 0 0 8px; font-size: 19px; line-height: 1.3; font-weight: 600; letter-spacing: -.02em; }
.card p { margin: 0; color: var(--fg-2); font-size: 15px; line-height: 1.6; max-width: 46ch; }
.b0 { grid-column: span 3; grid-row: span 2; }
.b1, .b2 { grid-column: span 3; }
.b3, .b4, .b5 { grid-column: span 2; }
.b6, .b7 { grid-column: span 3; }
.b0::before { background: radial-gradient(600px 360px at 100% 100%, color-mix(in srgb, var(--kakao) 10%, transparent), transparent 70%), radial-gradient(500px 240px at 0% 0%, color-mix(in srgb, var(--violet) 12%, transparent), transparent 70%); }
.b0 .card-ic { color: #1a1600; background: var(--kakao); border-color: transparent; }
.v { position: relative; margin-top: auto; padding: 24px 26px 26px; }
.sk { display: block; height: 8px; border-radius: 99px; background: var(--surface-3); }
.w40 { width: 40%; } .w50 { width: 50%; } .w60 { width: 60%; } .w80 { width: 80%; }
.pills { display: flex; flex-wrap: wrap; gap: 6px; }
.pills span { display: inline-flex; align-items: center; gap: 5px; padding: 5px 10px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--fg-3); font: 500 12px/1.2 var(--mono); }
.pills span.on { color: var(--fg); border-color: color-mix(in srgb, var(--violet) 55%, transparent); background: color-mix(in srgb, var(--violet) 14%, transparent); }
.pills span .i { width: 13px; height: 13px; stroke-width: 2.2; }
.pills .ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 35%, transparent); } .pills .no { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 35%, transparent); text-decoration: line-through; }
.pills.big span { padding: 8px 13px; font-size: 13px; }
/* chat visual */
.v-chat { display: flex; flex-direction: column; gap: 10px; padding-top: 28px; }
.chat-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.chat-av { width: 34px; height: 34px; border-radius: 12px; background: linear-gradient(135deg, #ffb36b, #ff5fa8); }
.chat-head .sk { width: 110px; } .chat-head small { margin-left: auto; color: var(--fg-3); font: 500 11.5px var(--mono); }
.bubble-time { align-self: flex-start; margin: -4px 0 0 8px; color: var(--fg-3); font: 500 11px var(--mono); }
.bubble { max-width: 92%; padding: 6px; border-radius: 20px; }
.bubble.in { width: 80%; align-self: flex-start; background: var(--surface-3); border: 1px solid var(--line); border-top-left-radius: 6px; }
.bubble.out { align-self: flex-end; display: grid; gap: 7px; width: 46%; padding: 14px 16px; background: var(--kakao); border-top-right-radius: 6px; }
.bubble.out .sk { background: rgba(0,0,0,.18); }
.bub-vid { position: relative; display: block; width: min(520px, 100%); aspect-ratio: 16 / 10; border-radius: 15px; overflow: hidden; }
.bub-vid img { width: 100%; height: 100%; object-fit: cover; }
.bub-play { position: absolute; inset: 0; margin: auto; display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.4); backdrop-filter: blur(8px); color: #fff; }
.bub-play .i { width: 20px; height: 20px; margin-left: 2px; }
.bub-tag, .bub-dur { position: absolute; padding: 3px 7px; border-radius: 6px; background: rgba(0,0,0,.55); color: #fff; font: 600 10.5px/1.2 var(--mono); }
.bub-tag { left: 8px; top: 8px; color: #fee500; } .bub-dur { right: 8px; bottom: 8px; }
.v-status { display: flex; align-items: center; gap: 10px; margin-top: 6px; padding: 12px 14px; border-radius: 14px; border: 1px solid color-mix(in srgb, var(--ok) 30%, transparent); background: color-mix(in srgb, var(--ok) 8%, transparent); font: 500 13px var(--mono); color: var(--fg); }
.v-status .i { width: 16px; height: 16px; color: var(--ok); stroke-width: 2.4; } .v-status b { margin-left: auto; color: var(--fg-3); font-weight: 500; }
/* subtitles */
.v-subs { display: grid; gap: 14px; }
.v-frame { position: relative; aspect-ratio: 21 / 8; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); }
.v-frame img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 70%; }
.v-frame p { position: absolute; left: 0; right: 0; bottom: 12px; margin: 0; max-width: none; text-align: center; color: #fff; font-size: 15px; font-weight: 600; text-shadow: 0 0 2px #000, 0 2px 6px #000, 0 0 1px #000; padding: 0 12px; }
/* notes */
.v-notes { display: grid; gap: 14px; }
.tl { position: relative; height: 6px; border-radius: 99px; background: var(--surface-3); margin-top: 8px; }
.tl::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 52%; border-radius: inherit; background: var(--grad); }
.tl i { position: absolute; top: -5px; width: 4px; height: 16px; margin-left: -2px; border-radius: 2px; background: var(--kakao); box-shadow: 0 0 0 3px var(--bg-1); }
.tl i.on::after { content: ""; position: absolute; left: 50%; top: 100%; width: 1px; height: 14px; background: var(--line-2); }
.v-notecard { display: grid; gap: 8px; margin-left: 30%; padding: 14px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--line-2); }
.v-notecard b { font: 600 12px var(--mono); color: var(--violet); }
/* A-B */
.ab-wave { position: relative; display: flex; align-items: center; gap: 3px; height: 70px; }
.ab-wave > i { flex: 1; height: var(--h); border-radius: 2px; background: var(--surface-3); }
.ab-wave > i:nth-child(n+11):nth-child(-n+22) { background: linear-gradient(180deg, var(--cyan), var(--violet)); }
.ab-sel { position: absolute; left: 28.5%; width: 35.5%; top: -8px; bottom: -8px; border-radius: 8px; border: 1.5px solid var(--cyan); background: color-mix(in srgb, var(--cyan) 8%, transparent); display: flex; justify-content: space-between; }
.ab-sel b { position: relative; top: -11px; height: 18px; padding: 0 6px; border-radius: 5px; background: var(--cyan); color: #04212a; font: 700 11px/18px var(--mono); }
.ab-sel b:first-child { left: -10px; } .ab-sel b:last-child { right: -10px; }
.ab-loop { display: flex; align-items: center; gap: 8px; margin-top: 18px; color: var(--fg-3); font: 500 13px var(--mono); }
.ab-loop .i { color: var(--cyan); }
/* speed */
.v-speed { display: grid; gap: 16px; }
.meter { display: grid; gap: 10px; }
.meter span { position: relative; display: flex; align-items: center; gap: 8px; height: 30px; padding: 0 10px; border-radius: 9px; background: var(--surface-2); overflow: hidden; color: var(--fg); font: 600 12px var(--mono); }
.meter span::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: var(--w); background: linear-gradient(90deg, color-mix(in srgb, var(--violet) 30%, transparent), color-mix(in srgb, var(--cyan) 30%, transparent)); }
.meter .i, .meter b { position: relative; width: 15px; height: 15px; } .meter b { width: auto; height: auto; margin-left: auto; }
/* list */
.v-list { display: grid; gap: 8px; }
.v-list .row { position: relative; display: flex; align-items: center; gap: 12px; padding: 9px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--line); }
.v-list .mock-fn { color: var(--fg); } .v-list .mock-prog { left: 74px; bottom: 6px; background: var(--surface-3); }
/* link */
.v-link { display: grid; gap: 12px; }
.urlbar { display: flex; align-items: center; gap: 10px; height: 46px; padding: 0 6px 0 14px; border-radius: 13px; background: var(--surface-2); border: 1px solid var(--line-2); font: 500 12.5px var(--mono); color: var(--fg-2); min-width: 0; }
.urlbar span { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.urlbar .i { width: 16px; height: 16px; color: var(--fg-3); }
.urlbar b { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: var(--grad); } .urlbar b .i { color: #fff; }
/* devices */
.v-devices { display: grid; gap: 16px; }
.dev { display: flex; gap: 10px; }
.dev .i { width: 52px; height: 52px; padding: 13px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--line); color: var(--fg); stroke-width: 1.5; }
.langs-cloud { display: flex; flex-wrap: wrap; gap: 5px; }
.langs-cloud span { padding: 4px 8px; border-radius: 7px; background: var(--surface-2); color: var(--fg-3); font: 600 11px/1.2 var(--mono); }

/* ---------- HEVC / before-after ---------- */
.hevc-sec { overflow: hidden; }
.hevc-sec::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--kakao) 4%, transparent) 30%, color-mix(in srgb, var(--kakao) 4%, transparent) 70%, transparent); }
.hevc-glow { position: absolute; z-index: -1; left: 50%; top: 18%; width: 900px; height: 500px; margin-left: -450px; border-radius: 50%; background: radial-gradient(closest-side, color-mix(in srgb, var(--kakao) 16%, transparent), transparent); filter: blur(20px); pointer-events: none; }
.ba { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px; max-width: 1100px; margin: 0 auto; }
.ba-card { margin: 0; padding: 12px; border-radius: 24px; background: var(--surface-2); border: 1px solid var(--line-2); box-shadow: var(--card-shadow); }
.ba-after { border-color: color-mix(in srgb, var(--ok) 40%, transparent); box-shadow: 0 30px 80px -30px color-mix(in srgb, var(--ok) 40%, transparent), var(--card-shadow); }
.ba-card figcaption { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 4px 6px 12px; }
.ba-file { font: 500 11.5px var(--mono); color: var(--fg-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tag { display: inline-flex; align-items: center; gap: 6px; flex: none; padding: 5px 10px 5px 7px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.tag .i { width: 14px; height: 14px; stroke-width: 2.4; }
.tag-bad { color: var(--bad); background: color-mix(in srgb, var(--bad) 12%, transparent); border: 1px solid color-mix(in srgb, var(--bad) 30%, transparent); }
.tag-ok { color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, transparent); border: 1px solid color-mix(in srgb, var(--ok) 30%, transparent); }
.ba-screen { position: relative; aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden; background: #000; display: grid; place-items: center; }
.ba-screen img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.wave { position: absolute; left: 10%; right: 10%; bottom: 14%; display: flex; align-items: center; gap: 3px; height: 34px; opacity: .55; }
.wave i { flex: 1; height: var(--h); border-radius: 2px; background: #4b5065; animation: wv 1.1s ease-in-out infinite alternate; animation-delay: var(--d); transform-origin: center; }
@keyframes wv { to { transform: scaleY(.35); } }
.dlg { position: relative; width: min(82%, 330px); padding: 16px; border-radius: 12px; background: #1d1f27; border: 1px solid rgba(255,255,255,.12); box-shadow: 0 20px 50px rgba(0,0,0,.6); color: #e8e9ee; }
.dlg-ic { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: rgba(251,191,36,.15); color: #fbbf24; } .dlg-ic .i { width: 17px; height: 17px; }
.dlg p { margin: 10px 0 14px; font-size: 13.5px; line-height: 1.5; color: #e8e9ee; }
.dlg-btns { display: flex; gap: 8px; justify-content: flex-end; }
.dlg-b { display: inline-flex; align-items: center; height: 30px; padding: 0 12px; border-radius: 7px; background: #3b82f6; color: #fff; font-size: 12.5px; font-weight: 600; }
.dlg-x { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 7px; background: rgba(255,255,255,.08); color: #b7bac6; } .dlg-x .i { width: 14px; height: 14px; }
.ba-bar { position: absolute; left: 10px; right: 10px; bottom: 10px; display: flex; align-items: center; gap: 10px; padding: 8px 12px 8px 8px; border-radius: 12px; background: rgba(12,14,22,.6); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,.12); }
.ba-bar .mock-play { width: 28px; height: 28px; }
.ba-track { flex: 1; height: 4px; border-radius: 99px; background: rgba(255,255,255,.2); } .ba-track i { display: block; width: 35%; height: 100%; border-radius: inherit; background: var(--grad); }
.ba-screen .mock-chip { top: 10px; left: 10px; }
.ba-hint { display: flex; align-items: center; gap: 8px; margin: 12px 6px 4px; color: var(--fg-3); font-size: 14px; }
.ba-hint .i { width: 16px; height: 16px; } .ba-hint.ok { color: var(--fg); } .ba-hint.ok .i { color: var(--ok); }
.ba-arrow { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--bg-1); border: 1px solid var(--line-2); color: var(--fg); box-shadow: 0 10px 30px -10px rgba(0,0,0,.5); }
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 1100px; margin: 48px auto 40px; padding: 0; counter-reset: s; }
.steps li { display: flex; gap: 14px; align-items: flex-start; padding: 20px; border-radius: 18px; border: 1px solid var(--line); background: var(--surface); }
.steps p { margin: 0; color: var(--fg-2); font-size: 15px; }
.num { display: grid; place-items: center; flex: none; width: 30px; height: 30px; border-radius: 9px; background: var(--surface-3); border: 1px solid var(--line-2); font: 700 13px var(--mono); color: var(--fg); }
.hevc-sec .num { background: var(--kakao); color: #1a1600; border-color: transparent; }

/* ---------- comparison ---------- */
.table-wrap { max-width: 900px; margin: 0 auto; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.cmp { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 15.5px; }
.cmp th, .cmp td { padding: 18px 20px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: middle; }
.cmp thead th, .cmp thead td { border-bottom: 0; padding-top: 22px; padding-bottom: 22px; font-weight: 600; }
.cmp tbody th { font-weight: 500; color: var(--fg); width: 38%; }
.cmp tbody tr:last-child th, .cmp tbody tr:last-child td { border-bottom: 0; }
.cmp .us { width: 31%; background: color-mix(in srgb, var(--violet) 9%, var(--surface)); border-left: 1px solid color-mix(in srgb, var(--violet) 40%, transparent); border-right: 1px solid color-mix(in srgb, var(--violet) 40%, transparent); }
.cmp thead .us { border-top: 1px solid color-mix(in srgb, var(--violet) 40%, transparent); border-radius: 20px 20px 0 0; }
.cmp tbody tr:last-child .us { border-bottom: 1px solid color-mix(in srgb, var(--violet) 40%, transparent); border-radius: 0 0 20px 20px; }
.cmp thead .them { color: var(--fg-3); font-weight: 500; }
.cmp-brand { display: inline-flex; align-items: center; gap: 9px; font-size: 16px; letter-spacing: -.01em; } .cmp-brand img { border-radius: 6px; }
.yes, .no { display: inline-flex; align-items: center; gap: 9px; }
.yes { color: var(--fg); font-weight: 500; } .no { color: var(--fg-3); }
.yes .i, .no .i { flex: none; width: 22px; height: 22px; padding: 4px; border-radius: 50%; stroke-width: 2.6; }
.yes .i { color: #fff; background: var(--grad); } .no .i { color: var(--fg-3); background: var(--surface-3); }

/* ---------- download ---------- */
.dl-grid { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 16px; }
.dl { position: relative; display: flex; flex-direction: column; gap: 12px; padding: 28px; border-radius: var(--r); background: linear-gradient(180deg, var(--surface-2), var(--surface)); border: 1px solid var(--line); box-shadow: var(--card-shadow); overflow: hidden; }
.dl h3 { margin: 6px 0 0; font-size: 20px; letter-spacing: -.02em; font-weight: 600; }
.dl p { margin: 0; color: var(--fg-2); font-size: 15px; }
.dl .btn { align-self: flex-start; margin-top: auto; }
.dl-ic { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 15px; background: var(--surface-3); border: 1px solid var(--line-2); color: var(--fg); }
.dl-ic .i { width: 26px; height: 26px; stroke-width: 1.5; }
.dl-main { border-color: color-mix(in srgb, var(--violet) 40%, transparent); }
.dl-main::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(500px 300px at 100% 0%, color-mix(in srgb, var(--violet) 22%, transparent), transparent 70%); }
.dl-main { isolation: isolate; }
.dl-main .dl-ic { color: #fff; background: var(--grad); border-color: transparent; }
.dl-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 12px; }
.dl-tags span { padding: 4px 9px; border-radius: 7px; border: 1px solid var(--line); color: var(--fg-3); font: 500 12px var(--mono); }
.releases { margin: 24px 0 0; text-align: center; }
.releases a, .link-arrow { display: inline-flex; align-items: center; gap: 8px; color: var(--fg-2); text-decoration: none; font-weight: 500; font-size: 15px; }
.releases a:hover, .link-arrow:hover { color: var(--fg); }
.releases .i, .link-arrow .i { width: 16px; height: 16px; }
.how { margin-top: 72px; }
.how h3 { margin: 0 0 20px; text-align: center; font-size: 22px; letter-spacing: -.02em; font-weight: 600; }
.how ol { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 0; padding: 0; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); overflow: hidden; }
.how li { display: flex; gap: 14px; align-items: flex-start; padding: 22px 24px; }
.how li + li { border-left: 1px solid var(--line); }
.how p { margin: 3px 0 0; font-size: 15px; color: var(--fg-2); }
.how .num { background: var(--grad); color: #fff; border-color: transparent; }

/* ---------- FAQ ---------- */
.faq { display: grid; grid-template-columns: 1fr 1.6fr; gap: 64px; align-items: start; }
.faq-side { position: sticky; top: 100px; }
.faq-side h2 { margin-bottom: 28px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-of-type { border-top: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 2px; cursor: pointer; list-style: none; font-size: 17px; font-weight: 600; letter-spacing: -.01em; line-height: 1.45; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:hover { color: var(--fg); }
.pm { display: grid; place-items: center; flex: none; width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--line-2); color: var(--fg-2); transition: transform .25s, background-color .2s; }
.pm .i { width: 15px; height: 15px; }
details[open] .pm { transform: rotate(45deg); background: var(--surface-3); color: var(--fg); }
.faq-list details p { margin: -6px 0 0; padding: 0 48px 24px 2px; color: var(--fg-2); font-size: 15.5px; }

/* ---------- final CTA ---------- */
.final { padding-top: 40px; }
.final-card { position: relative; isolation: isolate; overflow: hidden; padding: 96px 24px; border-radius: 32px; text-align: center; color: #fff; background: #0b0816; border: 1px solid rgba(255,255,255,.1); }
.final-bg { position: absolute; inset: 0; z-index: -1; background: radial-gradient(600px 340px at 15% 0%, rgba(139,92,255,.75), transparent 70%), radial-gradient(560px 360px at 90% 100%, rgba(31,200,230,.55), transparent 70%), radial-gradient(400px 260px at 60% 40%, rgba(255,95,168,.25), transparent 70%); }
.final-bg::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); background-size: 48px 48px; mask-image: radial-gradient(ellipse at center, #000, transparent 70%); -webkit-mask-image: radial-gradient(ellipse at center, #000, transparent 70%); }
.final-logo { margin: 0 auto 28px; border-radius: 18px; box-shadow: 0 20px 50px -10px rgba(139,92,255,.8), 0 0 0 1px rgba(255,255,255,.2); }
.final h2 { background: linear-gradient(180deg, #fff 30%, #cfd2e6); -webkit-background-clip: text; background-clip: text; font-size: clamp(36px, 5.6vw, 68px); }
.final p { margin: 18px auto 34px; color: rgba(255,255,255,.75); font-size: 17px; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); margin-top: 40px; padding: 72px var(--gut) 0; color: var(--fg-2); font-size: 14.5px; overflow: hidden; }
.foot-in { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.6fr; gap: 40px; }
.foot-brand p { margin: 14px 0 0; max-width: 30ch; }
.foot-h { margin: 0 0 14px; color: var(--fg); font: 600 12.5px var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.foot-brand .foot-h { margin-top: 28px; }
.foot-col { display: flex; flex-direction: column; gap: 10px; }
.foot-col a { color: var(--fg-2); text-decoration: none; width: fit-content; } .foot-col a:hover { color: var(--fg); }
.foot-langs div { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 16px; }
.foot-langs a[aria-current] { color: var(--fg); font-weight: 600; }
.share { display: flex; flex-wrap: wrap; gap: 6px; }
.share a, .share button { display: inline-flex; align-items: center; height: 32px; padding: 0 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--fg-2); text-decoration: none; font: 500 13px var(--font); cursor: pointer; transition: color .15s, border-color .15s; }
.share a:hover, .share button:hover { color: var(--fg); border-color: var(--line-2); }
.share button .i { width: 15px; height: 15px; }
.foot-base { margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--fg-3); font-size: 13.5px; }
.foot-base p { margin: 0; }
.foot-mark { margin: 28px 0 -0.2em !important; text-align: center; font-size: min(20.5vw, 290px); font-weight: 800; letter-spacing: -.06em; line-height: .8; background: linear-gradient(180deg, var(--surface-3), transparent 85%); -webkit-background-clip: text; background-clip: text; color: transparent; user-select: none; }

/* ---------- doc pages (HEVC guide, legal, 404) ---------- */
.doc { padding-bottom: 48px; overflow-x: clip; }
.doc-hero { position: relative; isolation: isolate; max-width: 800px; margin: 0 auto; padding: 72px 20px 48px; }
.doc-glow { position: absolute; z-index: -1; left: -20%; right: -20%; top: -120px; height: 520px; background: radial-gradient(closest-side at 30% 40%, color-mix(in srgb, var(--violet) 26%, transparent), transparent), radial-gradient(closest-side at 75% 30%, color-mix(in srgb, var(--cyan) 16%, transparent), transparent); filter: blur(30px); pointer-events: none; }
.doc-glow.kakao { background: radial-gradient(closest-side at 30% 40%, color-mix(in srgb, var(--kakao) 18%, transparent), transparent), radial-gradient(closest-side at 75% 30%, color-mix(in srgb, var(--violet) 20%, transparent), transparent); }
.crumbs { display: flex; align-items: center; gap: 8px; margin-bottom: 28px; font-size: 13.5px; color: var(--fg-3); }
.crumbs a { color: var(--fg-2); text-decoration: none; } .crumbs a:hover { color: var(--fg); }
.doc-hero h1 { margin: 0; font-size: clamp(36px, 5.4vw, 64px); line-height: 1.06; letter-spacing: -.045em; font-weight: 700; background: var(--title-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
:lang(ko) .doc-hero h1, :lang(ja) .doc-hero h1, :lang(zh-CN) .doc-hero h1, :lang(zh-TW) .doc-hero h1 { line-height: 1.24; letter-spacing: -.03em; }
.doc-hero .lead { margin: 22px 0 0; max-width: 680px; }
.doc-hero .ctas { margin-top: 32px; }
.updated { display: inline-flex; margin: 22px 0 0; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line); color: var(--fg-3); font: 500 12.5px var(--mono); }
.doc-wide { max-width: 1140px; margin: 8px auto 24px; padding: 0 20px; }
.prose { max-width: 760px; margin: 0 auto; padding: 0 20px; font-size: 17px; line-height: 1.75; }
:lang(ko) .prose, :lang(ja) .prose, :lang(zh-CN) .prose, :lang(zh-TW) .prose { line-height: 1.85; }
.prose section { padding: 8px 0; }
.prose h2 { margin: 48px 0 14px; font-size: clamp(22px, 2.6vw, 28px); line-height: 1.3; letter-spacing: -.025em; font-weight: 650; }
.prose p { margin: 0 0 16px; color: color-mix(in srgb, var(--fg) 80%, var(--fg-2)); }
.prose a { color: var(--fg); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--violet) 60%, transparent); text-underline-offset: 3px; text-decoration-thickness: 1.5px; }
.prose a:hover { text-decoration-color: var(--violet); }
.steps.vertical { grid-template-columns: 1fr; margin: 20px 0; gap: 10px; }
.steps.vertical .num { background: var(--kakao); color: #1a1600; border-color: transparent; }
.steps.vertical p { font-size: 16px; color: var(--fg); }
.callout { display: flex; gap: 18px; margin: 40px 0; padding: 26px; border-radius: var(--r); background: var(--surface-2); border: 1px solid var(--line-2); }
.callout > .i { width: 44px; height: 44px; padding: 11px; border-radius: 13px; background: var(--surface-3); color: var(--fg); }
.callout h2 { margin: 4px 0 8px; font-size: 20px; }
.callout p { margin: 0 0 12px; color: var(--fg-2); font-size: 16px; }
.callout .link-arrow { text-decoration: none; color: var(--fg); }
.faq-list.compact summary { font-size: 16.5px; padding: 18px 2px; }
.faq-list.compact details p { font-size: 15.5px; }
.legal .doc-hero { max-width: 1104px; }
.legal-grid { display: grid; grid-template-columns: 240px minmax(0, 760px); justify-content: center; gap: 64px; max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.legal-grid .prose { margin: 0; padding: 0; }
.legal .prose section { padding: 0 0 8px; border-top: 1px solid var(--line); scroll-margin-top: 90px; }
.legal .prose section:first-child { border-top: 0; }
.legal .prose h2 { margin: 32px 0 12px; font-size: 21px; }
.toc { position: sticky; top: 96px; align-self: start; padding: 4px 0; }
.toc-h { margin: 0 0 12px; color: var(--fg); font: 600 12.5px var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.toc ol { list-style: none; margin: 0 0 20px; padding: 0 0 0 2px; border-left: 1px solid var(--line); }
.toc li a { display: block; margin-left: -1px; padding: 6px 0 6px 14px; border-left: 1px solid transparent; color: var(--fg-3); text-decoration: none; font-size: 14px; line-height: 1.45; transition: color .15s, border-color .15s; }
.toc li a:hover { color: var(--fg); border-left-color: var(--violet); }
.toc-other { display: inline-flex; align-items: center; gap: 6px; color: var(--fg-2); text-decoration: none; font-size: 14px; font-weight: 500; }
.toc-other .i { width: 15px; height: 15px; } .toc-other:hover { color: var(--fg); }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .f-left { left: -12px; } .f-right { right: -12px; }
  .mock-body { grid-template-columns: 1fr 230px; }
}
@media (max-width: 960px) {
  .sec { padding-top: 96px; padding-bottom: 96px; }
  .promise-row { grid-template-columns: 1fr 1fr; }
  .promise:nth-child(3) { border-left: 0; }
  .promise:nth-child(n+3) { border-top: 1px solid var(--line); }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .b0 { grid-column: span 2; grid-row: auto; }
  .b1, .b2, .b3, .b4, .b5, .b6, .b7 { grid-column: span 1; }
  .b5 { grid-column: span 2; }
  .ba { grid-template-columns: 1fr; }
  .ba-arrow { margin: -6px auto; transform: rotate(90deg); }
  .dl-grid { grid-template-columns: 1fr 1fr; } .dl-main { grid-column: span 2; }
  .faq { grid-template-columns: 1fr; gap: 32px; } .faq-side { position: static; }
  .foot-in { grid-template-columns: 1fr 1fr; }
  .legal-grid { grid-template-columns: 1fr; gap: 24px; }
  .toc { position: static; padding: 20px; border-radius: 18px; border: 1px solid var(--line); background: var(--surface); }
  .toc ol { columns: 2; column-gap: 24px; border-left: 0; padding: 0; }
  .toc li { break-inside: avoid; } .toc li a { padding-left: 0; border: 0; }
}
@media (max-width: 760px) {
  .mock-body { grid-template-columns: 1fr; } .mock-side { display: none; }
  .float { display: none; }
  .mock { transform: none; animation: none; border-radius: 14px; }
  .mock-note, .kbd:not(:first-of-type), .mock-row > .i:nth-of-type(4) { display: none; }
  .mock-sub { bottom: 76px; }
  .mock-ctrl { left: 8px; right: 8px; bottom: 8px; padding: 9px 10px 8px; }
  .mock-row { gap: 10px; } .mock-play { width: 26px; height: 26px; } .mock-play .i { width: 12px; height: 12px; }
  .mock-row > .i { width: 15px; height: 15px; }
  .mock-pill { display: none; }
  .steps { grid-template-columns: 1fr; }
  .how ol { grid-template-columns: 1fr; } .how li + li { border-left: 0; border-top: 1px solid var(--line); }
}
@media (max-width: 640px) {
  .nav-in { gap: 10px; height: 58px; }
  .nav-links { display: none; }
  .langs-name { display: none; } .langs-code { display: inline; }
  .langs summary { padding: 0 10px; }
  .langs ul { position: fixed; left: 12px; right: 12px; top: 64px; width: auto; }
  .nav .btn-sm .i { display: none; }
  .hero { padding-top: 56px; }
  .eyebrow { font-size: 12.5px; gap: 7px; margin-bottom: 24px; }
  .eyebrow > .i { display: none; }
  .hero .ctas { flex-direction: column; align-items: stretch; max-width: 420px; margin-left: auto; margin-right: auto; }
  .hero-visual { margin-top: 48px; }
  .sec { padding-top: 80px; padding-bottom: 80px; }
  .sec-head { margin-bottom: 40px; }
  .promises { padding-top: 48px; }
  .promise-row { grid-template-columns: 1fr; }
  .promise + .promise { border-left: 0; border-top: 1px solid var(--line); }
  .promise { padding: 20px; }
  .bento { grid-template-columns: 1fr; gap: 12px; }
  .bento .card { grid-column: auto; min-height: 0; }
  .card-txt { padding: 22px 22px 0; } .v { padding: 20px 22px 22px; }
  .bubble.out { width: 56%; }
  .cmp { font-size: 14px; }
  .cmp th, .cmp td { padding: 14px 10px; }
  .cmp tbody th { width: 34%; }
  .yes, .no { gap: 6px; } .yes .i, .no .i { width: 18px; height: 18px; padding: 3px; }
  .cmp-brand img { display: none; }
  .dl-grid { grid-template-columns: 1fr; } .dl-main { grid-column: auto; }
  .dl { padding: 22px; } .dl .btn { align-self: stretch; }
  .ctas.center .btn, .doc-hero .ctas .btn { flex: 1 1 100%; }
  .faq-list summary { font-size: 16px; padding: 18px 0; }
  .faq-list details p { padding-right: 0; }
  .final-card { padding: 64px 20px; border-radius: 24px; }
  .foot-in { grid-template-columns: 1fr 1fr; gap: 32px 20px; }
  .foot-brand, .foot-langs { grid-column: 1 / -1; }
  .doc-hero { padding-top: 44px; }
  .toc ol { columns: 1; }
  .callout { flex-direction: column; padding: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .marquee-track { animation: none; }
}