/* Inkling 소개 페이지. 외부 글꼴·CDN 없이 시스템 글꼴만 쓴다. */
:root {
  --ink-950: #070a22;
  --ink-900: #0b1030;
  --ink-800: #151c4c;
  --ink-700: #1f2765;
  --ink-600: #2546a8;
  --ink-500: #2a5fd0;
  --ink-400: #4f7df0;
  --ink-300: #8fb0ff;
  --ink-200: #c9d7ff;
  --spark: #66e3ff;
  --rec: #ff4d4f;
  --warm: #ffb46b;

  --paper: #f6f7fc;
  --paper-2: #eef1fb;
  --card: #ffffff;
  --text: #121634;
  --muted: #586080;
  --line: #e0e4f2;
  --mark-miss: #ffe1e1;
  --mark-miss-fg: #b42318;
  --mark-fix: #dbe6ff;
  --mark-fix-fg: #1d3fa6;
  --shadow: 0 1px 2px rgba(18, 22, 52, .06), 0 12px 32px -12px rgba(18, 22, 52, .18);

  --radius: 22px;
  --font: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #080b20;
    --paper-2: #0d1230;
    --card: #11173a;
    --text: #e8ebff;
    --muted: #9ea6cc;
    --line: #232b5a;
    --mark-miss: #4a1820;
    --mark-miss-fg: #ffb3b3;
    --mark-fix: #1b2d6e;
    --mark-fix-fg: #c9d7ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 16px 40px -16px rgba(0, 0, 0, .6);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--paper);
  word-break: keep-all;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.2; margin: 0; letter-spacing: -0.02em; }
kbd {
  font-family: var(--mono);
  font-size: .85em;
  padding: .05em .45em;
  border-radius: 6px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  background: var(--card);
  white-space: nowrap;
}
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: #fff; color: #000; padding: 8px 12px; border-radius: 8px; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--ink-400); outline-offset: 3px; border-radius: 6px; }

.wrap { width: min(1080px, 100%); margin: 0 auto; padding: 0 20px; }
.wrap.narrow { width: min(760px, 100%); }

/* ───── 위쪽 막대 ───── */
.nav {
  position: fixed; z-index: 50;
  top: max(10px, env(safe-area-inset-top)); left: 50%; transform: translateX(-50%);
  width: min(1040px, calc(100% - 20px));
  display: flex; align-items: center; gap: 12px;
  padding: 8px 10px 8px 14px;
  border-radius: 999px;
  background: rgba(11, 16, 48, .55);
  border: 1px solid rgba(201, 215, 255, .14);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  color: #fff;
  transition: background .3s, box-shadow .3s;
}
.nav.solid { background: rgba(11, 16, 48, .82); box-shadow: 0 10px 30px -12px rgba(0, 0, 0, .5); }
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; font-weight: 700; letter-spacing: -.01em; }
.brand img { border-radius: 7px; }
.nav nav { display: none; margin-left: auto; gap: 4px; }
.nav nav a { text-decoration: none; font-size: 14px; padding: 6px 12px; border-radius: 999px; color: var(--ink-200); }
.nav nav a:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.pill { margin-left: auto; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; }
.pill.dev { background: rgba(255, 180, 107, .16); color: var(--warm); border: 1px solid rgba(255, 180, 107, .35); }
@media (min-width: 720px) {
  .nav nav { display: flex; }
  .pill { margin-left: 4px; }
}

/* ───── 첫 화면 ───── */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(120% 80% at 50% 0%, var(--ink-700) 0%, var(--ink-900) 55%, var(--ink-950) 100%);
  padding: calc(96px + env(safe-area-inset-top)) 0 0;
  isolation: isolate;
}
.ink { position: absolute; inset: 0; z-index: -2; pointer-events: none; }
.ink i {
  position: absolute; border-radius: 50%; filter: blur(60px); opacity: .55;
  animation: drift 18s ease-in-out infinite alternate;
}
.ink i:nth-child(1) { width: 60vmax; height: 60vmax; left: -25vmax; top: -20vmax; background: radial-gradient(circle, var(--ink-500), transparent 65%); }
.ink i:nth-child(2) { width: 50vmax; height: 50vmax; right: -20vmax; top: 10vmax; background: radial-gradient(circle, #3b2fb8, transparent 65%); animation-duration: 22s; animation-delay: -6s; }
.ink i:nth-child(3) { width: 40vmax; height: 40vmax; left: 20vmax; bottom: -20vmax; background: radial-gradient(circle, rgba(102, 227, 255, .55), transparent 65%); animation-duration: 26s; animation-delay: -12s; }
@keyframes drift {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(6vmax, 4vmax, 0) scale(1.08); }
  100% { transform: translate3d(-4vmax, 6vmax, 0) scale(.95); }
}
.grain { /* 점 무늬로 잉크 질감 */
  position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: .35;
  background-image: radial-gradient(rgba(201, 215, 255, .18) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-mask-image: radial-gradient(80% 60% at 50% 40%, #000 30%, transparent 80%);
  mask-image: radial-gradient(80% 60% at 50% 40%, #000 30%, transparent 80%);
}

.hero-in { width: min(1080px, 100%); margin: 0 auto; padding: 0 20px; position: relative; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 18px;
  font-size: 13px; color: var(--ink-200);
  padding: 6px 12px; border-radius: 999px;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(201, 215, 255, .14);
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--warm); box-shadow: 0 0 0 0 rgba(255, 180, 107, .7); animation: ping 2.4s infinite; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(255, 180, 107, .6); } 70%, 100% { box-shadow: 0 0 0 10px rgba(255, 180, 107, 0); } }

h1 { font-size: clamp(42px, 12vw, 92px); font-weight: 800; letter-spacing: -0.045em; line-height: 1.05; }
.glow {
  background: linear-gradient(100deg, var(--ink-300) 0%, var(--spark) 40%, #ffffff 55%, var(--ink-300) 80%);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: sheen 6s ease-in-out infinite;
}
@keyframes sheen { 0%, 100% { background-position: 100% 0; } 50% { background-position: 0 0; } }
.lede { margin: 20px 0 0; max-width: 34em; font-size: clamp(16px, 2.2vw, 19px); color: var(--ink-200); }
.lede b { color: #fff; font-weight: 600; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 22px; border-radius: 999px;
  font-weight: 600; font-size: 15px; text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s;
}
.btn:active { transform: scale(.97); }
.btn.primary { background: linear-gradient(135deg, var(--ink-400), var(--ink-500)); color: #fff; box-shadow: 0 10px 30px -10px rgba(79, 125, 240, .9), inset 0 1px 0 rgba(255, 255, 255, .25); }
.btn.primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -10px rgba(79, 125, 240, 1), inset 0 1px 0 rgba(255, 255, 255, .25); }
.btn.ghost { color: #fff; border: 1px solid rgba(201, 215, 255, .3); background: rgba(255, 255, 255, .04); }
.btn.ghost:hover { background: rgba(255, 255, 255, .1); }
.honest { margin: 14px 0 0; font-size: 13px; color: var(--ink-300); }

/* 무대: 잉크 방울 + 파형 + 키 */
.stage {
  position: relative; height: 372px; margin: 32px auto 0; width: min(460px, calc(100% - 40px));
}
.drop {
  position: absolute; left: 50%; top: 50px; width: 180px; height: 216px; transform: translateX(-50%);
  animation: float 6s ease-in-out infinite;
  filter: drop-shadow(0 30px 50px rgba(79, 125, 240, .55));
}
.drop-shape { width: 100%; height: 100%; }
.drop-shape path { fill: #fff; }
.drop::before { /* 방울에서 번지는 고리 */
  content: ""; position: absolute; left: 50%; bottom: 6px; width: 170px; height: 170px; margin-left: -85px;
  border-radius: 50%; border: 2px solid rgba(143, 176, 255, .55);
  animation: ripple 3.2s ease-out infinite;
}
.drop::after {
  content: ""; position: absolute; left: 50%; bottom: 6px; width: 170px; height: 170px; margin-left: -85px;
  border-radius: 50%; border: 2px solid rgba(102, 227, 255, .4);
  animation: ripple 3.2s ease-out 1.6s infinite;
}
@keyframes ripple { from { transform: scale(.9); opacity: .9; } to { transform: scale(1.9); opacity: 0; } }
@keyframes float { 0%, 100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, -10px); } }
.bars { position: absolute; left: 50%; bottom: 40px; transform: translateX(-50%); display: flex; gap: 9px; align-items: center; height: 82px; }
.bars i { width: 13px; border-radius: 8px; background: var(--ink-500); height: 40%; animation: talk 1.1s ease-in-out infinite; }
.bars i:nth-child(1) { animation-delay: -.2s; height: 34%; }
.bars i:nth-child(2) { animation-delay: -.5s; height: 62%; }
.bars i:nth-child(3) { animation-delay: -.1s; height: 100%; }
.bars i:nth-child(4) { animation-delay: -.7s; height: 58%; }
.bars i:nth-child(5) { animation-delay: -.35s; height: 30%; }
@keyframes talk { 0%, 100% { transform: scaleY(.45); } 50% { transform: scaleY(1); } }

.keys { position: absolute; left: 50%; bottom: 0; transform: translateX(-50%); display: flex; gap: 6px; }
.keys kbd {
  font-size: 15px; color: #fff; min-width: 40px; text-align: center; padding: 6px 10px;
  border-radius: 10px; background: rgba(255, 255, 255, .08); border: 1px solid rgba(201, 215, 255, .22); border-bottom: 3px solid rgba(201, 215, 255, .3);
  animation: press 3.2s ease-in-out infinite;
}
.keys kbd.wide { min-width: 96px; }
.keys kbd:nth-child(2) { animation-delay: .06s; }
.keys kbd:nth-child(3) { animation-delay: .12s; }
@keyframes press {
  0%, 20%, 100% { transform: translateY(0); border-bottom-width: 3px; background: rgba(255, 255, 255, .08); }
  28%, 70% { transform: translateY(2px); border-bottom-width: 1px; background: rgba(79, 125, 240, .45); }
}
.bubble {
  position: absolute; font-size: 13px; padding: 8px 12px; border-radius: 14px; white-space: nowrap;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(201, 215, 255, .2); color: var(--ink-200);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  animation: bob 7s ease-in-out infinite;
}
.bubble.b1 { left: 0; top: 0; border-bottom-left-radius: 4px; }
.bubble.b2 { right: 0; top: 278px; border-top-right-radius: 4px; animation-delay: -3s; }
.bubble.out { background: #fff; color: var(--ink-700); font-weight: 600; font-family: var(--mono); font-size: 12px; border: 0; box-shadow: 0 10px 30px -10px rgba(102, 227, 255, .8); }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

.marquee {
  margin-top: 28px; padding: 16px 0 22px; overflow: hidden;
  border-top: 1px solid rgba(201, 215, 255, .1);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.track { display: flex; gap: 0; width: max-content; animation: slide 34s linear infinite; }
.track span { font-size: 14px; color: var(--ink-300); padding: 0 22px; position: relative; white-space: nowrap; }
.track span::after { content: ""; position: absolute; right: -3px; top: 50%; width: 5px; height: 5px; margin-top: -2px; border-radius: 50%; background: var(--ink-400); }
@keyframes slide { to { transform: translateX(-50%); } }

/* ───── 공통 칸 ───── */
.sec { padding: 72px 0; position: relative; }
@media (min-width: 900px) { .sec { padding: 96px 0; } }
.kicker { margin: 0 0 10px; font-size: 13px; font-weight: 700; letter-spacing: .06em; color: var(--ink-500); }
@media (prefers-color-scheme: dark) { .kicker { color: var(--ink-300); } }
h2 { font-size: clamp(30px, 7vw, 52px); font-weight: 800; letter-spacing: -0.035em; }
.sub { margin: 16px 0 0; max-width: 36em; color: var(--muted); font-size: 17px; }
.sub.small { font-size: 15px; margin-top: 22px; }

/* 흐름 */
.flow { list-style: none; margin: 40px 0 0; padding: 0; display: grid; gap: 14px; counter-reset: step; position: relative; }
.flow::before { /* 잉크가 흐르는 세로줄 */
  content: ""; position: absolute; left: 31px; top: 30px; bottom: 30px; width: 2px;
  background: linear-gradient(var(--ink-400), var(--spark));
  transform-origin: top; transform: scaleY(var(--flow, 1));
  border-radius: 2px;
}
.flow li {
  position: relative; padding: 20px 20px 20px 78px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow);
  counter-increment: step;
}
.flow li::after {
  content: "0" counter(step); position: absolute; right: 18px; top: 16px;
  font: 700 13px var(--mono); color: var(--muted); opacity: .6;
}
.step-ic {
  position: absolute; left: 12px; top: 18px; width: 40px; height: 40px; border-radius: 14px;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--ink-400), var(--ink-600));
  box-shadow: 0 8px 20px -8px rgba(42, 95, 208, .9);
}
.step-ic svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.flow h3 { font-size: 19px; margin-bottom: 6px; }
.flow p { margin: 0; color: var(--muted); font-size: 15px; }
@media (min-width: 900px) {
  .flow { grid-template-columns: repeat(4, 1fr); gap: 16px; }
  .flow::before { left: 30px; right: 30px; top: 38px; bottom: auto; width: auto; height: 2px; transform-origin: left; transform: scaleX(var(--flow, 1)); background: linear-gradient(90deg, var(--ink-400), var(--spark)); }
  .flow li { padding: 78px 20px 22px; }
  .step-ic { left: 20px; top: 18px; }
}

/* 데모 */
.demo-sec { background: linear-gradient(var(--paper), var(--paper-2)); }
.demo { margin-top: 36px; }
.demo-tabs { display: none; gap: 6px; padding: 5px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); width: max-content; max-width: 100%; margin-bottom: 18px; }
.demo-tabs button {
  font: inherit; font-size: 14px; font-weight: 600; border: 0; cursor: pointer;
  padding: 8px 16px; border-radius: 999px; background: transparent; color: var(--muted);
  transition: background .2s, color .2s;
}
.demo-tabs button[aria-selected="true"] { background: var(--ink-500); color: #fff; }
.ex { display: grid; gap: 12px; margin-bottom: 28px; }
.pane { border-radius: var(--radius); padding: 18px 20px; background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow); }
.pane-h { margin: 0 0 8px; display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 14px; }
.pane-h small { font-weight: 500; color: var(--muted); }
.rec { width: 9px; height: 9px; border-radius: 50%; background: var(--rec); box-shadow: 0 0 0 4px rgba(255, 77, 79, .15); }
.txt { margin: 0; font-size: 16px; line-height: 1.75; min-height: 3.5em; }
.heard .txt { color: var(--muted); }
mark { border-radius: 6px; padding: 1px 4px; transition: background .4s, color .4s; }
mark.miss { background: var(--mark-miss); color: var(--mark-miss-fg); text-decoration: line-through; text-decoration-thickness: 1.5px; }
mark.fix { background: var(--mark-fix); color: var(--mark-fix-fg); font-weight: 600; }
.arrow { display: grid; place-items: center; color: var(--ink-400); }
.arrow svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.win { padding: 0; overflow: hidden; border-color: color-mix(in srgb, var(--ink-400) 35%, var(--line)); }
.win-bar { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--line); background: var(--paper-2); }
.lights { display: flex; gap: 6px; }
.lights i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.lights i:nth-child(2) { background: #febc2e; }
.lights i:nth-child(3) { background: #28c840; }
.tabs { display: flex; gap: 2px; margin-left: auto; font-size: 12px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 2px; }
.tabs span { padding: 2px 9px; border-radius: 6px; color: var(--muted); }
.tabs span.on { background: var(--ink-500); color: #fff; }
.to { margin: 12px 18px 0; font-size: 12px; color: var(--muted); }
.win .txt { margin: 8px 18px 0; font-size: 16.5px; }
.win-foot { margin: 14px 0 0; padding: 10px 18px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); display: flex; gap: 8px; align-items: center; justify-content: flex-end; }
.note { font-size: 13px; color: var(--muted); margin: 4px 0 0; max-width: 46em; }
@media (min-width: 860px) {
  .ex { grid-template-columns: 1fr auto 1.15fr; align-items: center; }
  .arrow svg { transform: rotate(-90deg); }
}
/* JS가 있으면 탭으로 하나씩 보여 준다 */
.js .demo-tabs { display: inline-flex; }
.js .ex { display: none; }
.js .ex.on { display: grid; }
.typing .txt[data-type]::after { content: ""; display: inline-block; width: 2px; height: 1.1em; margin-left: 2px; vertical-align: -0.15em; background: var(--ink-400); animation: caret .8s steps(1) infinite; }
@keyframes caret { 50% { opacity: 0; } }
.js .ex mark.pending { background: transparent; color: inherit; text-decoration: none; font-weight: inherit; }

/* 강도 */
.levels { margin-top: 36px; display: grid; gap: 12px; }
.lv { position: relative; padding: 22px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--card); box-shadow: var(--shadow); overflow: hidden; }
.lv-n { display: inline-block; font-weight: 800; font-size: 22px; letter-spacing: -.02em; }
.lv p { margin: 6px 0 0; color: var(--muted); font-size: 15px; }
.lv .lv-apps { margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--ink-500); }
.lv.hot { color: #fff; border: 0; background: linear-gradient(140deg, var(--ink-500), var(--ink-700)); }
.lv.hot p { color: var(--ink-200); }
.lv.hot .lv-apps { color: var(--spark); }
.lv.hot::after { content: ""; position: absolute; right: -40px; top: -40px; width: 160px; height: 160px; border-radius: 50%; background: radial-gradient(circle, rgba(102, 227, 255, .45), transparent 70%); }
@media (prefers-color-scheme: dark) { .lv .lv-apps { color: var(--ink-300); } }
@media (min-width: 760px) { .levels { grid-template-columns: repeat(3, 1fr); } }

/* 기능 상자 */
.bento { margin-top: 36px; display: grid; gap: 12px; }
.card {
  position: relative; padding: 24px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow); overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s;
}
.card::before { /* 손가락·마우스를 따라오는 빛 */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%), rgba(79, 125, 240, .16), transparent 70%);
}
.card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--ink-400) 45%, var(--line)); }
.card:hover::before, .card.lit::before { opacity: 1; }
.card h3 { font-size: 20px; margin-bottom: 8px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card.big { background: linear-gradient(150deg, var(--ink-800), var(--ink-950)); color: #fff; border: 0; }
.card.big p { color: var(--ink-200); }
.card.big::before { background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%), rgba(102, 227, 255, .22), transparent 70%); }
.say {
  margin-top: 22px !important; display: inline-block; font-size: 20px !important; font-weight: 700; color: #fff !important;
  padding: 10px 16px; border-radius: 16px 16px 16px 4px; background: rgba(79, 125, 240, .35); border: 1px solid rgba(143, 176, 255, .35);
}
@media (min-width: 760px) {
  .bento { grid-template-columns: repeat(3, 1fr); }
  .card.big { grid-column: span 2; grid-row: span 2; display: flex; flex-direction: column; justify-content: flex-end; min-height: 300px; }
  .card.big h3 { font-size: 30px; }
}

/* 숫자 */
.nums-sec { background: var(--paper-2); }
.nums { margin: 36px 0 0; display: grid; gap: 12px; }
.nums > div { padding: 22px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); }
.nums dt { font-size: 14px; color: var(--muted); font-weight: 600; }
.nums dd { margin: 4px 0 0; font-size: 56px; font-weight: 800; letter-spacing: -.04em; line-height: 1.1; font-variant-numeric: tabular-nums;
  background: linear-gradient(120deg, var(--ink-400), var(--ink-600)); -webkit-background-clip: text; background-clip: text; color: transparent; }
@media (prefers-color-scheme: dark) { .nums dd { background-image: linear-gradient(120deg, var(--ink-300), var(--spark)); } }
.nums dd small { font-size: 22px; margin-left: 4px; }
.nums p { margin: 6px 0 0; font-size: 14px; color: var(--muted); }
.fine { margin: 18px 0 0; font-size: 13px; color: var(--muted); }
@media (min-width: 760px) { .nums { grid-template-columns: repeat(3, 1fr); } }

/* 개인정보 */
.privacy-sec { background: var(--ink-950); color: #fff; overflow: hidden; }
.privacy-sec::before { content: ""; position: absolute; width: 70vmax; height: 70vmax; right: -30vmax; top: -30vmax; border-radius: 50%; background: radial-gradient(circle, rgba(42, 95, 208, .45), transparent 65%); pointer-events: none; }
.privacy-sec .kicker { color: var(--spark); }
.where { list-style: none; margin: 36px 0 0; padding: 0; display: grid; gap: 12px; position: relative; }
.where li {
  padding: 20px 20px 20px 56px; border-radius: var(--radius); position: relative;
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(201, 215, 255, .14); color: var(--ink-200); font-size: 15px;
}
.where li b { display: block; color: #fff; font-size: 17px; margin-bottom: 4px; }
.where li::before { content: ""; position: absolute; left: 20px; top: 24px; width: 18px; height: 18px; border-radius: 50%; }
.where .here::before { background: #28c840; box-shadow: 0 0 14px #28c840; }
.where .lock::before { background: var(--ink-300); box-shadow: 0 0 14px var(--ink-300); }
.where .out::before { background: var(--warm); box-shadow: 0 0 14px var(--warm); }
.where .local::before { background: var(--spark); box-shadow: 0 0 14px var(--spark); }
@media (min-width: 760px) { .where { grid-template-columns: 1fr 1fr; } }

/* 로드맵 */
.road { list-style: none; margin: 40px 0 0; padding: 0; display: grid; gap: 0; position: relative; }
.road li { position: relative; padding: 0 0 28px 40px; }
.road li::before { content: ""; position: absolute; left: 7px; top: 22px; bottom: -4px; width: 2px; background: var(--line); }
.road li:last-child::before { display: none; }
.road li::after { content: ""; position: absolute; left: 0; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: var(--paper); border: 2px solid var(--line); }
.road li.done::after { background: var(--ink-500); border-color: var(--ink-500); box-shadow: 0 0 0 6px color-mix(in srgb, var(--ink-500) 20%, transparent); }
.road span { font-size: 12px; font-weight: 700; color: var(--ink-500); letter-spacing: .04em; }
@media (prefers-color-scheme: dark) { .road span { color: var(--ink-300); } }
.road h3 { font-size: 20px; margin: 2px 0 4px; }
.road p { margin: 0; color: var(--muted); font-size: 15px; max-width: 34em; }
@media (min-width: 900px) {
  .road { grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .road li { padding: 34px 0 0; }
  .road li::before { left: 22px; right: -20px; top: 7px; bottom: auto; width: auto; height: 2px; }
  .road li::after { top: 0; }
}

/* 묻는 것 */
.faq { margin-top: 32px; display: grid; gap: 10px; }
.faq details { border-radius: 18px; background: var(--card); border: 1px solid var(--line); transition: border-color .2s, box-shadow .2s; }
.faq details[open] { border-color: color-mix(in srgb, var(--ink-400) 45%, var(--line)); box-shadow: var(--shadow); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 52px 18px 20px; font-weight: 700; font-size: 16px; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 20px; top: 50%; width: 10px; height: 10px; margin-top: -7px;
  border-right: 2px solid var(--ink-400); border-bottom: 2px solid var(--ink-400); transform: rotate(45deg); transition: transform .25s;
}
.faq details[open] summary::after { transform: rotate(225deg); margin-top: -2px; }
.faq details p { margin: 0; padding: 0 20px 18px; color: var(--muted); font-size: 15px; }

/* 문의 */
.contact {
  position: relative; overflow: hidden; text-align: center; padding: 48px 22px; border-radius: 32px; color: #fff;
  background: radial-gradient(120% 120% at 50% 0%, var(--ink-600), var(--ink-900));
  box-shadow: 0 30px 60px -30px rgba(31, 39, 101, .8);
}
.contact::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 30%), rgba(102, 227, 255, .25), transparent 70%); }
.contact img { margin: 0 auto 18px; border-radius: 18px; position: relative; animation: float2 6s ease-in-out infinite; }
@keyframes float2 { 0%, 100% { transform: translateY(0) rotate(-3deg); } 50% { transform: translateY(-8px) rotate(3deg); } }
.contact h2 { font-size: clamp(26px, 6vw, 40px); position: relative; }
.contact p { color: var(--ink-200); margin: 10px 0 24px; position: relative; }
.contact .mail { position: relative; font-family: var(--mono); font-size: 15px; background: #fff; color: var(--ink-700); box-shadow: 0 12px 30px -10px rgba(102, 227, 255, .6); }

/* 바닥 */
.foot { padding: 28px 0 calc(40px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; justify-content: space-between; }
.other { font-weight: 700; text-decoration: none; padding: 10px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); transition: border-color .2s, transform .2s; }
.other:hover { border-color: var(--ink-400); transform: translateX(3px); }
.foot p { margin: 0; font-size: 13px; color: var(--muted); }

/* ───── 스크롤하면 나타나기 (JS가 html에 .fx를 붙였을 때만) ───── */
.fx [data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(.2, .7, .2, 1), transform .8s cubic-bezier(.2, .7, .2, 1); transition-delay: var(--d, 0s); }
.fx [data-reveal].in { opacity: 1; transform: none; }
.fx .hero-in > * { animation: rise .9s cubic-bezier(.2, .7, .2, 1) both; }
.fx .hero-in > :nth-child(2) { animation-delay: .08s; }
.fx .hero-in > :nth-child(3) { animation-delay: .16s; }
.fx .hero-in > :nth-child(4) { animation-delay: .24s; }
.fx .hero-in > :nth-child(5) { animation-delay: .3s; }
.fx .stage { animation: rise 1.1s .25s cubic-bezier(.2, .7, .2, 1) both; }
@keyframes rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

/* 움직임을 줄이고 싶은 사람, 그리고 ?still(캡처용) */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
.still *, .still *::before, .still *::after { animation: none !important; transition: none !important; }

/* 넓은 화면: 첫 화면을 두 칸으로 */
@media (min-width: 980px) {
  .hero { padding-top: 140px; }
  .hero-in { display: block; }
  .hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1080px) minmax(0, 1fr); }
  .hero > .hero-in { grid-column: 2; grid-row: 1; padding-right: 480px; }
  .hero > .stage { grid-column: 2; grid-row: 1; justify-self: end; align-self: center; margin: 0 20px 0 0; width: 440px; }
  h1 { font-size: 84px; }
  .hero > .marquee { grid-column: 1 / -1; margin-top: 70px; }
  .hero > .ink, .hero > .grain { grid-column: 1 / -1; }
}

/* 말로 고치기 카드의 작은 그림: 목록에서 둘째 줄이 지워진다 */
.mini { list-style: none; margin: 0 0 22px; padding: 16px 18px; border-radius: 16px; background: rgba(255, 255, 255, .05); border: 1px solid rgba(201, 215, 255, .14); display: grid; gap: 12px; max-width: 360px; }
.mini li { display: flex; align-items: center; gap: 10px; height: 14px; }
.mini li::before { content: ""; width: 14px; height: 14px; border-radius: 5px; background: var(--ink-400); opacity: .7; flex: none; }
.mini li i { display: block; height: 8px; border-radius: 4px; background: rgba(201, 215, 255, .35); width: var(--w, 70%); }
.mini li:nth-child(1) i { --w: 78%; }
.mini li:nth-child(2) i { --w: 62%; }
.mini li:nth-child(3) i { --w: 70%; }
.mini li.cut { position: relative; animation: cut 5s ease-in-out infinite; }
.mini li.cut::after { content: ""; position: absolute; left: 0; top: 50%; height: 2px; background: var(--rec); width: 100%; transform-origin: left; animation: strike 5s ease-in-out infinite; }
@keyframes strike { 0%, 25% { transform: scaleX(0); } 40%, 70% { transform: scaleX(1); } 85%, 100% { transform: scaleX(1); opacity: 0; } }
@keyframes cut { 0%, 70% { opacity: 1; } 85%, 92% { opacity: .15; } 100% { opacity: 1; } }
.still .mini li.cut::after { transform: none; }
.still .mini li.cut { opacity: .4; }
@media (prefers-reduced-motion: reduce) { .mini li.cut { opacity: .4; } }

/* 절 머리: 넓은 화면에서는 제목 왼쪽, 설명 오른쪽 */
.sec-head .sub { margin-top: 16px; }
@media (min-width: 900px) {
  .sec-head { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); column-gap: 56px; align-items: end; }
  .sec-head .kicker { grid-column: 1; }
  .sec-head h2 { grid-column: 1; }
  .sec-head .sub { grid-column: 2; grid-row: 1 / span 2; align-self: end; margin: 0 0 6px; font-size: 17px; }
  .narrow .sec-head { display: block; }
  .sec { padding: 84px 0; }
}

/* 첫 화면 무대: 넓은 화면에서는 크게, 말풍선 넷 */
.bubble.b3, .bubble.b4 { display: none; }
.bubble.b4 { display: none; align-items: center; gap: 8px; font-size: 12px; font-weight: 600; color: #fff; }
.bubble.b4 .rec { width: 8px; height: 8px; border-radius: 50%; background: var(--rec); box-shadow: 0 0 0 3px rgba(255, 77, 79, .25); }
@media (min-width: 980px) {
  .hero > .hero-in { padding-right: 520px; }
  .hero > .stage { width: 500px; height: 500px; }
  .drop { width: 230px; height: 276px; top: 74px; filter: drop-shadow(0 40px 70px rgba(79, 125, 240, .6)); }
  .drop::before, .drop::after { width: 220px; height: 220px; margin-left: -110px; bottom: 8px; }
  .bars { bottom: 52px; height: 104px; gap: 11px; }
  .bars i { width: 16px; }
  .bubble { font-size: 14px; }
  .bubble.b1 { left: 0; top: 24px; }
  .bubble.b2 { right: 0; top: 360px; font-size: 13px; }
  .bubble.b3 { display: block; right: 0; top: 120px; border-bottom-right-radius: 4px; animation-delay: -1.5s; }
  .bubble.b4 { display: inline-flex; left: 6px; top: 250px; animation-delay: -4.5s; background: rgba(255, 77, 79, .12); border-color: rgba(255, 77, 79, .3); }
  .keys { bottom: 14px; }
  .keys kbd { font-size: 16px; }
}