/* Personal Device Bridge — site styles. No external fonts: system stack
 * (Pretendard / Inter when installed) keeps the CSP strict and pages fast. */

:root {
  --accent: #5B5BF7;
  --accent-strong: #4646E0;
  --accent-ink: #4040D6;
  --accent-soft: #EEEEFE;
  --accent-soft-2: #E3E3FD;
  --success: #16A34A;
  --success-ink: #15803D;
  --success-soft: #E8F7EE;
  --bg: #FFFFFF;
  --bg-soft: #F7F7FB;
  --surface: #FFFFFF;
  --surface-2: #F3F3F8;
  --text: #0E0E1B;
  --text-2: #45455A;
  --muted: #62627A;
  --border: #E6E6EF;
  --border-strong: #D5D5E2;
  --shadow: 0 1px 2px rgba(16, 16, 40, .05), 0 8px 24px -8px rgba(16, 16, 40, .10);
  --shadow-lg: 0 2px 6px rgba(16, 16, 40, .06), 0 30px 60px -20px rgba(40, 40, 120, .25);
  --logo-screen: #FFFFFF;
  --r-sm: 10px;
  --r: 16px;
  --r-lg: 24px;
  --container: 1180px;
  --gutter: 20px;
  --header-h: 64px;
  --font: "Pretendard Variable", Pretendard, "Inter var", Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", "Hiragino Sans", "Yu Gothic UI", "Microsoft YaHei UI", "PingFang SC", "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #7C7CFF;
    --accent-strong: #5B5BF7;
    --accent-ink: #A5A5FF;
    --accent-soft: #1C1C3A;
    --accent-soft-2: #25254A;
    --success: #22C55E;
    --success-ink: #4ADE80;
    --success-soft: #0F2A1B;
    --bg: #0A0A12;
    --bg-soft: #0F0F1A;
    --surface: #14141F;
    --surface-2: #1B1B29;
    --text: #F3F3FA;
    --text-2: #BDBDD2;
    --muted: #9A9AB4;
    --border: #262638;
    --border-strong: #34344A;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -8px rgba(0, 0, 0, .5);
    --shadow-lg: 0 2px 6px rgba(0, 0, 0, .4), 0 30px 60px -20px rgba(0, 0, 0, .7);
    --logo-screen: #0A0A12;
  }
}

:lang(ja) { --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo, "Noto Sans JP", Inter, -apple-system, "Segoe UI", sans-serif; }
:lang(zh-CN) { --font: "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", Inter, -apple-system, "Segoe UI", sans-serif; }
:lang(zh-TW) { --font: "PingFang TC", "Microsoft JhengHei UI", "Microsoft JhengHei", "Noto Sans TC", "Source Han Sans TC", Inter, -apple-system, "Segoe UI", sans-serif; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}
:lang(ko) body, body:lang(ko) { word-break: keep-all; overflow-wrap: anywhere; }
img, svg { max-width: 100%; }
svg { display: block; }
a { color: var(--accent-ink); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
h1, h2, h3, h4 { line-height: 1.2; margin: 0; letter-spacing: -0.02em; color: var(--text); }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
main:focus { outline: none; }

.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; padding: 10px 16px; border-radius: var(--r-sm); background: var(--accent-strong); color: #fff; font-weight: 600; text-decoration: none; transition: top .15s; }
.skip:focus { top: 12px; color: #fff; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.container.narrow { max-width: 820px; }
@media (max-width: 400px) { :root { --gutter: 16px; } }

.i { width: 20px; height: 20px; flex: none; }
.i-sm { width: 16px; height: 16px; }

/* ---------- buttons & badges ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 20px; border-radius: 999px; font: inherit; font-weight: 600; text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: background .15s, transform .15s, box-shadow .15s; white-space: nowrap; }
.btn-primary { background: #5B5BF7; color: #fff; box-shadow: 0 6px 16px -6px rgba(91, 91, 247, .7); }
.btn-primary:hover { background: #4646E0; color: #fff; }
.btn-sm { min-height: 38px; padding: 6px 16px; font-size: .9rem; }

.badge { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; font-size: .75rem; font-weight: 600; line-height: 1.5; letter-spacing: .01em; white-space: nowrap; }
.badge-ok { background: var(--success-soft); color: var(--success-ink); }
.badge-ok::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-soon { background: var(--surface-2); color: var(--text-2); border: 1px dashed var(--border-strong); }
.badge-preview { background: var(--accent-soft); color: var(--accent-ink); }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: saturate(180%) blur(14px); -webkit-backdrop-filter: saturate(180%) blur(14px); border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent); }
.header-inner { display: flex; align-items: center; gap: 16px; min-height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: -0.01em; min-width: 0; }
.brand:hover { color: var(--text); }
.logo-mark { width: 30px; height: 30px; color: var(--accent); flex: none; }
.brand-name { white-space: nowrap; }
.nav { margin-left: auto; }
.nav ul { display: flex; gap: 2px; list-style: none; }
.nav a { display: block; padding: 8px 12px; border-radius: 999px; color: var(--text-2); text-decoration: none; font-size: .925rem; font-weight: 500; }
.nav a:hover { color: var(--text); background: var(--surface-2); }
.header-actions { display: flex; align-items: center; gap: 8px; }

details[data-menu] { position: relative; }
details[data-menu] > summary { list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; min-height: 40px; padding: 6px 10px; border-radius: 999px; color: var(--text-2); font-size: .9rem; font-weight: 500; border: 1px solid var(--border); background: var(--surface); }
details[data-menu] > summary::-webkit-details-marker { display: none; }
details[data-menu] > summary:hover { color: var(--text); border-color: var(--border-strong); }
details[data-menu][open] > summary .chev { transform: rotate(180deg); }
.chev { width: 16px; height: 16px; transition: transform .2s; }
.lang-list, .menu-panel { position: absolute; right: 0; top: calc(100% + 8px); z-index: 60; min-width: 200px; padding: 8px; list-style: none; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); box-shadow: var(--shadow-lg); }
.lang-list { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; min-width: 300px; }
.lang-list a, .menu-panel a { display: block; padding: 8px 12px; border-radius: var(--r-sm); color: var(--text); text-decoration: none; font-size: .925rem; }
.lang-list a:hover, .menu-panel a:hover { background: var(--surface-2); }
.lang-list a[aria-current="page"] { background: var(--accent-soft); color: var(--accent-ink); font-weight: 600; }
.menu-panel ul { list-style: none; }
.menu { display: none; }

@media (max-width: 980px) {
  .nav { display: none; }
  .menu { display: block; }
  .header-actions { margin-left: auto; }
}
@media (max-width: 640px) {
  .header-cta { display: none; }
  .lang-current { display: none; }
  .brand-name { font-size: .95rem; }
  .lang-list { position: fixed; left: var(--gutter); right: var(--gutter); top: calc(var(--header-h) + 4px); min-width: 0; }
}
@media (max-width: 359px) { .brand-name { display: none; } }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; padding: 72px 0 88px; }
.hero-bg { position: absolute; inset: -20% -10% auto; height: 120%; z-index: -1; background:
  radial-gradient(600px 380px at 78% 18%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%),
  radial-gradient(520px 320px at 8% 90%, color-mix(in srgb, var(--success) 12%, transparent), transparent 70%); }
.hero-bg::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px); background-size: 48px 48px; opacity: .35; -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 70%); mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 70%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px 6px 10px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); color: var(--text-2); font-size: .85rem; font-weight: 600; box-shadow: var(--shadow); }
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 20%, transparent); }
.hero h1 { margin-top: 22px; font-size: clamp(2.3rem, 1.4rem + 3.6vw, 4.1rem); font-weight: 800; letter-spacing: -0.035em; line-height: 1.06; text-wrap: balance; }
:lang(ja) .hero h1, :lang(zh-CN) .hero h1, :lang(zh-TW) .hero h1, :lang(ko) .hero h1 { letter-spacing: -0.02em; line-height: 1.18; }
:lang(ja) .hero h1, :lang(zh-CN) .hero h1, :lang(zh-TW) .hero h1 { font-size: clamp(1.95rem, 1.1rem + 3.4vw, 3.6rem); }
.hero h1 .accent { display: block; background: linear-gradient(92deg, var(--accent) 10%, #8B5CF6 60%, var(--success) 110%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { margin-top: 20px; font-size: clamp(1.05rem, 1rem + .35vw, 1.22rem); color: var(--text-2); max-width: 36em; text-wrap: pretty; }
.downloads { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.dl { display: inline-flex; align-items: center; gap: 12px; min-height: 60px; padding: 10px 16px 10px 14px; border-radius: var(--r); background: var(--text); color: var(--bg); text-decoration: none; box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s; }
.dl:hover { color: var(--bg); transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.dl .os { width: 26px; height: 26px; }
.dl-text { display: flex; flex-direction: column; line-height: 1.25; }
.dl-text strong { font-size: 1.02rem; }
.dl-text small { font-size: .8rem; opacity: .75; }
.dl .badge-preview { background: color-mix(in srgb, var(--bg) 16%, transparent); color: var(--bg); }
.dl-soon { background: var(--surface); color: var(--text); border: 1px solid var(--border-strong); }
.dl-soon:hover { color: var(--text); }
.hero-note { margin-top: 14px; font-size: .88rem; color: var(--muted); max-width: 40em; }
.trust { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 26px; list-style: none; color: var(--text-2); font-size: .92rem; font-weight: 500; }
.trust li { display: inline-flex; align-items: center; gap: 6px; }
.trust .i { width: 18px; height: 18px; color: var(--success); }
.hero-art { position: relative; }
.hero-art::before { content: ""; position: absolute; inset: 8% 4% 4% 4%; border-radius: 40px; background: linear-gradient(145deg, var(--accent-soft), transparent 70%); z-index: -1; }
.hero-illu { width: 100%; height: auto; }

/* illustration colours */
.il-shadow { fill: rgba(20, 20, 60, .08); }
.il-frame { fill: var(--surface); stroke: var(--border-strong); stroke-width: 1.5; }
.il-screen { fill: var(--bg-soft); }
.il-dot { fill: var(--border-strong); }
.il-base { fill: var(--surface-2); stroke: var(--border-strong); stroke-width: 1.5; }
.il-notch { fill: var(--border-strong); }
.il-card { fill: var(--surface); stroke: var(--border); stroke-width: 1; filter: drop-shadow(0 8px 18px rgba(40, 40, 120, .14)); }
.il-qr-bg { fill: #FFFFFF; stroke: var(--border); }
.il-qr { fill: #111127; }
.il-qr-logo-bg { fill: #5B5BF7; stroke: #fff; stroke-width: 3; }
.il-t-strong { font: 700 14px var(--font); fill: var(--text); }
.il-t-muted { font: 500 11.5px var(--font); fill: var(--muted); }
.il-t-accent { font: 600 11.5px var(--font); fill: var(--accent-ink); }
.il-pill-soft { fill: var(--accent-soft); }
.il-arc-bg { fill: none; stroke: var(--accent-soft-2); stroke-width: 10; stroke-linecap: round; }
.il-arc { fill: none; stroke-width: 4; stroke-linecap: round; stroke-dasharray: 2 12; animation: flow 1.6s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -28; } }
.il-chip-bg { fill: var(--surface); stroke: var(--border); filter: drop-shadow(0 6px 12px rgba(40, 40, 120, .12)); }
.il-ok { fill: var(--success); }
.il-t-chip { font: 600 12.5px var(--font); fill: var(--text); }
.il-accent-soft { fill: var(--accent-soft); }
.il-shield { fill: #5B5BF7; }
.il-shield-check { fill: none; stroke: #fff; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.il-code-bg { fill: var(--surface); stroke: var(--border-strong); }
.il-t-code { font: 700 24px var(--mono); fill: var(--text); letter-spacing: .08em; }
.il-btn { fill: #5B5BF7; }
.il-t-btn { font: 700 13px var(--font); fill: #fff; }

@media (max-width: 960px) {
  .hero { padding: 48px 0 64px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-art { max-width: 560px; margin: 0 auto; width: 100%; }
}
@media (max-width: 480px) {
  .downloads { flex-direction: column; }
  .dl { width: 100%; }
  .dl .badge { margin-left: auto; }
}

/* ---------- sections ---------- */
.section { padding: 104px 0; position: relative; }
.section-soft { background: var(--bg-soft); border-block: 1px solid var(--border); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head-left { text-align: left; margin: 0 0 36px; }
.kicker { display: inline-block; margin-bottom: 12px; color: var(--accent-ink); font-weight: 700; font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; }
:lang(ko) .kicker, :lang(ja) .kicker, :lang(zh-CN) .kicker, :lang(zh-TW) .kicker { letter-spacing: .02em; }
.section h2 { font-size: clamp(1.8rem, 1.3rem + 2vw, 2.75rem); font-weight: 800; letter-spacing: -0.03em; text-wrap: balance; }
.section-lead { margin-top: 16px; color: var(--text-2); font-size: 1.08rem; text-wrap: pretty; }
.center { text-align: center; }
.text-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
@media (max-width: 720px) { .section { padding: 72px 0; } .section-head { margin-bottom: 40px; } }

/* steps */
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; counter-reset: s; }
.step { position: relative; padding: 24px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); }
.step:not(:last-child)::after { content: ""; position: absolute; top: 46px; right: -21px; width: 22px; height: 2px; background: linear-gradient(90deg, var(--accent), transparent); }
.step-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.step-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; background: var(--accent-soft); color: var(--accent-ink); }
.step-num { font: 700 .85rem var(--mono); color: var(--muted); }
.step h3 { font-size: 1.15rem; margin-bottom: 8px; }
.step p { color: var(--text-2); font-size: .95rem; }
.step:last-child .step-icon { background: var(--success-soft); color: var(--success-ink); }
@media (max-width: 960px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } .step::after { display: none; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* features */
.group-title { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin: 0 0 18px; font-size: 1.1rem; font-weight: 700; }
.group-title + .features { margin-bottom: 48px; }
.features { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.features-roadmap { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-bottom: 0 !important; }
.feature { padding: 22px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); transition: border-color .15s, transform .15s, box-shadow .15s; }
.feature:hover { border-color: var(--border-strong); box-shadow: var(--shadow); transform: translateY(-2px); }
.feature-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.feature-icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: var(--accent-soft); color: var(--accent-ink); }
.feature h4 { font-size: 1.05rem; margin-bottom: 6px; letter-spacing: -0.01em; }
.feature p { color: var(--text-2); font-size: .93rem; }
.feature.is-roadmap { background: transparent; border-style: dashed; }
.feature.is-roadmap .feature-icon { background: var(--surface-2); color: var(--muted); }
@media (max-width: 1080px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } .features-roadmap { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .features, .features-roadmap { grid-template-columns: 1fr; } }

/* security */
.security-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: start; }
.points { list-style: none; display: grid; gap: 22px; }
.points li { display: flex; gap: 16px; }
.point-icon { display: grid; place-items: center; flex: none; width: 42px; height: 42px; border-radius: 12px; background: var(--accent-soft); color: var(--accent-ink); }
.points h3 { font-size: 1.05rem; margin-bottom: 4px; }
.points p { color: var(--text-2); font-size: .95rem; }
.stack { margin: 0; padding: 22px; border-radius: 28px; background: var(--bg-soft); border: 1px solid var(--border); box-shadow: var(--shadow-lg); position: sticky; top: calc(var(--header-h) + 24px); }
.layer { padding: 18px; border-radius: var(--r); background: var(--surface); border: 1px solid var(--border); }
.layer-name { display: flex; align-items: center; gap: 8px; font-weight: 700; }
.layer-name .i { color: var(--accent-ink); width: 18px; height: 18px; }
.layer-note { color: var(--muted); font-size: .88rem; margin-top: 4px; }
.layer-session { background: linear-gradient(135deg, #5B5BF7, #7A5AF8); border: 0; color: #fff; }
.layer-session .layer-name, .layer-session .layer-name .i { color: #fff; }
.layer-session .layer-note { color: rgba(255, 255, 255, .85); font-family: var(--mono); font-size: .82rem; }
.layer-arrow { height: 22px; width: 2px; margin: 4px auto; background: repeating-linear-gradient(var(--accent) 0 4px, transparent 4px 8px); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; list-style: none; }
.chips li { padding: 4px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-ink); font-size: .8rem; font-weight: 600; }
.transports { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-top: 14px; }
.transport { display: flex; flex-direction: column; gap: 4px; padding: 12px; border-radius: 12px; border: 1px dashed var(--border-strong); }
.transport strong { font-size: .98rem; }
.transport span:not(.badge) { color: var(--muted); font-size: .82rem; }
.transport .badge { align-self: flex-start; margin-top: 4px; }
.transport.is-live { border: 1px solid color-mix(in srgb, var(--success) 45%, transparent); background: var(--success-soft); }
@media (max-width: 960px) { .security-grid { grid-template-columns: 1fr; gap: 40px; } .stack { position: static; } }

/* privacy promises */
.promises { list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-bottom: 36px; }
.promises li { padding: 24px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); }
.promise-icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 14px; border-radius: 12px; background: var(--success-soft); color: var(--success-ink); }
.promises h3 { font-size: 1.05rem; margin-bottom: 6px; }
.promises p { color: var(--text-2); font-size: .93rem; }
@media (max-width: 960px) { .promises { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .promises { grid-template-columns: 1fr; } }

/* roadmap */
.timeline { list-style: none; max-width: 860px; margin: 0 auto; position: relative; }
.timeline::before { content: ""; position: absolute; left: 131px; top: 12px; bottom: 12px; width: 2px; background: linear-gradient(var(--accent), var(--border)); }
.phase { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 32px; padding: 14px 0; }
.phase-when { position: relative; font-weight: 700; color: var(--muted); padding-top: 18px; font-size: .95rem; }
.phase-dot { position: absolute; right: -19px; top: 22px; width: 14px; height: 14px; border-radius: 50%; background: var(--bg); border: 2px solid var(--border-strong); }
.phase.is-now .phase-when { color: var(--accent-ink); }
.phase.is-now .phase-dot { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 5px var(--accent-soft); }
.phase-body { padding: 18px 22px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); }
.phase.is-now .phase-body { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); box-shadow: var(--shadow); }
.phase-body h3 { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: 1.1rem; margin-bottom: 6px; }
.phase-body p { color: var(--text-2); font-size: .95rem; }
@media (max-width: 640px) {
  .timeline::before { left: 7px; }
  .phase { grid-template-columns: 1fr; gap: 8px; padding-left: 32px; }
  .phase-when { padding-top: 0; }
  .phase-dot { left: -32px; right: auto; top: 4px; }
}

/* faq */
.faq { display: grid; gap: 12px; }
.qa { border-radius: var(--r); background: var(--surface); border: 1px solid var(--border); }
.qa[open] { border-color: var(--border-strong); box-shadow: var(--shadow); }
.qa summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 22px; cursor: pointer; list-style: none; border-radius: var(--r); }
.qa summary::-webkit-details-marker { display: none; }
.qa summary h3 { font-size: 1.02rem; font-weight: 650; letter-spacing: -0.01em; }
.qa .chev { width: 20px; height: 20px; color: var(--muted); }
.qa[open] .chev { transform: rotate(180deg); }
.qa-a { padding: 0 22px 20px; color: var(--text-2); }

/* share */
.share-card { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; padding: 36px; border-radius: 28px; background: radial-gradient(500px 240px at 90% 0%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%), var(--bg-soft); border: 1px solid var(--border); text-align: center; }
.share-card h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem); }
.share-card p { color: var(--text-2); margin-top: 8px; }
.share-list { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.share-btn { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font: inherit; font-size: .92rem; font-weight: 600; text-decoration: none; cursor: pointer; transition: border-color .15s, transform .15s; }
.share-btn:hover { color: var(--text); border-color: var(--border-strong); transform: translateY(-1px); }
.share-btn .i { width: 18px; height: 18px; }
.share-x .i { color: var(--text); }
.share-facebook .i { color: #1877F2; }
.share-linkedin .i { color: #0A66C2; }
.share-line .i { color: #06C755; }
.share-kakao .i { color: #3A1D1D; }
.share-kakao { background: #FEE500; border-color: #F2D900; color: #191600; }
.share-kakao:hover { color: #191600; border-color: #E0C800; }
.share-telegram .i { color: #229ED9; }
.share-whatsapp .i { color: #25D366; }
.share-copy.is-done { border-color: var(--success); color: var(--success-ink); }
.share-status { min-height: 1.5em; font-size: .9rem; color: var(--success-ink); font-weight: 600; }
@media (prefers-color-scheme: dark) { .share-linkedin .i { color: #4A9EF0; } .share-facebook .i { color: #4D95F5; } }
@media (max-width: 560px) { .share-card { padding: 28px 18px; } .share-btn span { font-size: .88rem; } }

/* footer */
.site-footer { padding: 64px 0 40px; border-top: 1px solid var(--border); background: var(--bg); color: var(--text-2); font-size: .93rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.6fr; gap: 32px; }
.footer-brand p { margin-top: 12px; max-width: 26em; }
.footer-h { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 12px; }
.site-footer ul { list-style: none; display: grid; gap: 8px; }
.site-footer a { color: var(--text-2); text-decoration: none; }
.site-footer a:hover { color: var(--text); text-decoration: underline; }
.footer-langs ul { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 16px; }
.footer-langs a[aria-current="page"] { color: var(--accent-ink); font-weight: 600; }
.footer-legal { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); font-size: .82rem; color: var(--muted); display: grid; gap: 4px; overflow-wrap: anywhere; }
.footer-legal a { color: var(--muted); }
@media (max-width: 960px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 16px; } .footer-langs { grid-column: 1 / -1; } }

/* ---------- legal pages ---------- */
.legal { padding: 40px 0 88px; }
.legal-wrap { max-width: 840px; }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; font-size: .88rem; color: var(--muted); }
.crumbs li + li::before { content: "/"; margin-right: 8px; color: var(--border-strong); }
.crumbs a { color: var(--muted); }
.legal-head { margin: 28px 0 32px; }
.legal-head h1 { font-size: clamp(2rem, 1.5rem + 2vw, 2.8rem); font-weight: 800; letter-spacing: -0.03em; }
.legal-meta { margin-top: 10px; color: var(--muted); font-size: .92rem; }
.legal-intro { margin-top: 20px; font-size: 1.08rem; color: var(--text-2); }
.toc { padding: 22px 26px; border-radius: var(--r-lg); background: var(--bg-soft); border: 1px solid var(--border); margin-bottom: 40px; }
.toc h2 { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 10px; }
.toc ol { list-style: none; columns: 2; column-gap: 32px; }
.toc li { break-inside: avoid; padding: 3px 0; font-size: .93rem; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }
@media (max-width: 640px) { .toc ol { columns: 1; } }
.legal-doc section { padding-top: 12px; margin-bottom: 28px; }
.legal-doc section h2 { font-size: 1.3rem; margin-bottom: 12px; letter-spacing: -0.015em; }
.legal-doc section p { margin-bottom: 12px; color: var(--text-2); overflow-wrap: anywhere; }
.legal-doc section ul { margin: 0 0 14px 1.2em; display: grid; gap: 8px; color: var(--text-2); overflow-wrap: anywhere; }
.legal-doc section li::marker { color: var(--accent); }
.operator-card { margin: 40px 0 24px; padding: 24px; border-radius: var(--r-lg); border: 1px solid var(--border); background: var(--bg-soft); }
.operator-card dl { margin: 0; display: grid; gap: 10px; }
.operator-card dl div { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 12px; }
.operator-card dt { color: var(--muted); font-size: .9rem; }
.operator-card dd { margin: 0; overflow-wrap: anywhere; }
@media (max-width: 560px) { .operator-card dl div { grid-template-columns: 1fr; gap: 0; } }
.legal-links { display: flex; flex-wrap: wrap; gap: 20px; }

/* ---------- root / 404 / offline ---------- */
.page-root { min-height: 100vh; background: radial-gradient(700px 400px at 80% 0%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%), var(--bg); }
.root { padding: 72px 0; }
.root-inner { text-align: center; }
.brand-lg { font-size: 1.2rem; }
.logo-lg { width: 44px; height: 44px; }
.root h1 { margin-top: 28px; font-size: clamp(2rem, 1.5rem + 2.4vw, 3rem); font-weight: 800; letter-spacing: -0.03em; }
.root .lead { margin: 16px auto 0; }
.root-langs { list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 40px; text-align: left; }
.lang-card { display: flex; flex-direction: column; gap: 4px; height: 100%; padding: 16px 18px; border-radius: var(--r); background: var(--surface); border: 1px solid var(--border); text-decoration: none; color: var(--text); transition: border-color .15s, transform .15s; }
.lang-card:hover { color: var(--text); border-color: var(--accent); transform: translateY(-1px); }
.lang-card span { color: var(--muted); font-size: .85rem; }
.root-foot { margin-top: 40px; color: var(--muted); font-size: .9rem; }
.big-code { margin-top: 32px; font: 800 5rem/1 var(--mono); color: var(--accent); }
.pill-langs { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 28px; }
.pill-langs a { display: inline-block; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--border); text-decoration: none; color: var(--text); }
.offline-list { list-style: none; display: grid; gap: 6px; margin: 24px 0; color: var(--text-2); }
@media (max-width: 720px) { .root-langs { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 400px) { .root-langs { grid-template-columns: 1fr; } }

@media print {
  .site-header, .site-footer, .toc, .share-card, .skip { display: none !important; }
  body { color: #000; background: #fff; }
}