/* Chartccoli 소개 사이트 공통 스타일 (게임 화면과 같은 색) */
:root {
  --ground: #070a09;
  --panel: #0c100f;
  --raised: #121816;
  --raised-2: #18201d;
  --line: #1a2220;
  --line-strong: #26302c;
  --text: #e2e9e5;
  --text-2: #9aa7a1;
  --text-3: #66736d;
  --up: #3ccb8d;
  --down: #ef5a6f;
  --accent: #c2e47e;
  --accent-ink: #11170c;
  --amber: #e6b45a;
  --whale: #82a9f2;
  --font-ui: 'Geist', 'Apple SD Gothic Neo', 'Malgun Gothic', 'Noto Sans KR', system-ui, sans-serif;
  --font-num: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --font-display: 'Bricolage Grotesque', 'Geist', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  --wrap: 1120px;
  color-scheme: dark;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--ground);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
a {
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
}
.wrap {
  width: min(var(--wrap), 100% - 32px);
  margin-inline: auto;
}

/* 상단 */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--ground) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.02em;
}
.brand svg {
  width: 24px;
  height: 24px;
}
.mark-floret {
  fill: var(--accent);
}
.mark-top {
  fill: #d6f09a;
}
.mark-stem {
  fill: var(--up);
}
.mark-wick {
  stroke: var(--up);
  stroke-width: 1.4;
}
.nav-links {
  display: flex;
  gap: 18px;
  margin-left: 12px;
}
.nav-links a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 14px;
}
.nav-links a:hover {
  color: var(--text);
}
.nav-right {
  margin-left: auto;
  display: flex;
  gap: 8px;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 38px;
  padding: 0 16px;
  border-radius: 8px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover {
  filter: brightness(1.07);
}
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover {
  background: var(--raised);
}
.btn-lg {
  height: 48px;
  padding: 0 22px;
  font-size: 15.5px;
  border-radius: 10px;
}
.lang {
  min-width: 52px;
  color: var(--text-2);
  font-weight: 500;
}

/* 본문 공통 */
section {
  padding: 88px 0;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(194, 228, 126, 0.15);
}
h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin: 0;
  text-wrap: balance;
}
h2 {
  font-size: clamp(28px, 4vw, 40px);
}
.lead {
  color: var(--text-2);
  font-size: 17px;
  max-width: 640px;
  text-wrap: pretty;
}
.sec-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 40px;
}

/* 첫 화면 */
.hero {
  padding: 72px 0 40px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -200px -10% auto;
  height: 620px;
  background: radial-gradient(60% 60% at 50% 30%, rgba(194, 228, 126, 0.12), transparent 70%);
  pointer-events: none;
}
.hero-text {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
  max-width: 760px;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero .lead {
  font-size: clamp(16px, 2vw, 19px);
}
.cta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.fine {
  font-size: 13px;
  color: var(--text-3);
}
.shot {
  position: relative;
  margin-top: 56px;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  overflow: hidden;
  background: var(--panel);
  box-shadow:
    0 40px 120px -40px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(255, 255, 255, 0.02);
}
.shot img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
}
.shot-tag {
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 6px 10px;
  border-radius: 7px;
  background: rgba(7, 10, 9, 0.85);
  border: 1px solid var(--line-strong);
  font-size: 12.5px;
  color: var(--text-2);
}

/* 숫자 띠 */
.stats {
  padding: 0 0 24px;
}
.stats dl {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}
.stats dl > div {
  background: var(--panel);
  padding: 20px;
}
.stats dt {
  font-size: 13px;
  color: var(--text-3);
}
.stats dd {
  margin: 4px 0 0;
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 500;
}

/* 기능 */
.features {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.card {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
}
.card.wide {
  grid-column: span 3;
}
.card h3 {
  font-size: 20px;
}
.card p {
  margin: 0;
  color: var(--text-2);
  font-size: 15px;
}
.card .ico {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: var(--raised);
  border: 1px solid var(--line-strong);
  font-family: var(--font-num);
  font-size: 15px;
  color: var(--accent);
}
.card figure {
  margin: 8px 0 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.chip {
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12.5px;
  background: var(--raised);
  border: 1px solid var(--line-strong);
  color: var(--text-2);
}
.chip.up {
  color: var(--up);
}
.chip.down {
  color: var(--down);
}
.chip.whale {
  color: var(--whale);
}
.chip.amber {
  color: var(--amber);
}

/* 작동 원리 */
.how {
  background: var(--panel);
  border-block: 1px solid var(--line);
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  counter-reset: step;
}
.step {
  padding: 24px;
  border-radius: 14px;
  background: var(--ground);
  border: 1px solid var(--line);
}
.step::before {
  counter-increment: step;
  content: '0' counter(step);
  display: block;
  font-family: var(--font-num);
  color: var(--accent);
  font-size: 14px;
  margin-bottom: 10px;
}
.step h3 {
  font-size: 19px;
  margin-bottom: 8px;
}
.step p {
  margin: 0;
  color: var(--text-2);
  font-size: 15px;
}
.agents {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}
.agent {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--ground);
}
.agent i {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-radius: 2px;
}
.agent b {
  display: block;
  font-size: 15px;
}
.agent span {
  font-size: 13.5px;
  color: var(--text-2);
}

/* 그냥 게임 */
.notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: start;
  padding: 28px;
  border-radius: 14px;
  border: 1px solid rgba(230, 180, 90, 0.35);
  background: rgba(230, 180, 90, 0.06);
}
.notice .big {
  font-size: 34px;
  line-height: 1;
}
.notice h3 {
  font-size: 22px;
  margin-bottom: 8px;
}
.notice ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-2);
}

/* FAQ */
.faq {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 820px;
}
.faq details {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  padding: 0 20px;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary::after {
  content: '+';
  font-family: var(--font-num);
  color: var(--text-3);
}
.faq details[open] summary::after {
  content: '−';
}
.faq details p {
  margin: 0 0 18px;
  color: var(--text-2);
}

/* 마지막 권유 */
.final {
  text-align: center;
}
.final .wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

/* 하단 */
footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 40px;
  color: var(--text-3);
  font-size: 13.5px;
}
footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
}
footer nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
footer a {
  color: var(--text-2);
  text-decoration: none;
}
footer a:hover {
  color: var(--text);
}
.biz {
  width: 100%;
  font-size: 12px;
  line-height: 1.7;
}

/* 약관 문서 */
.doc {
  padding: 56px 0 88px;
}
.doc .wrap {
  max-width: 820px;
}
.doc h1 {
  font-size: clamp(30px, 4vw, 40px);
  margin-bottom: 8px;
}
.doc .meta {
  color: var(--text-3);
  font-size: 14px;
  margin: 0 0 12px;
}
.doc .draft {
  margin: 20px 0 32px;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px dashed rgba(230, 180, 90, 0.5);
  background: rgba(230, 180, 90, 0.06);
  color: var(--amber);
  font-size: 14px;
}
.doc h2 {
  font-size: 21px;
  margin: 40px 0 12px;
}
.doc p,
.doc li {
  color: var(--text-2);
  font-size: 15.5px;
}
.doc ol,
.doc ul {
  padding-left: 22px;
}
.doc li + li {
  margin-top: 6px;
}
.doc table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  margin: 12px 0;
}
.doc th,
.doc td {
  border: 1px solid var(--line-strong);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  color: var(--text-2);
}
.doc th {
  background: var(--panel);
  color: var(--text);
  font-weight: 600;
}
.doc .toc {
  padding: 16px 20px;
  border-radius: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
}
.doc .toc ol {
  margin: 0;
  columns: 2;
}
/* 운영자가 채워야 할 칸 */
.fill {
  padding: 0 4px;
  border-radius: 4px;
  background: rgba(230, 180, 90, 0.16);
  color: var(--amber);
  font-style: normal;
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }
  .features {
    grid-template-columns: 1fr;
  }
  .card,
  .card.wide {
    grid-column: auto;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .stats dl {
    grid-template-columns: 1fr 1fr;
  }
  section {
    padding: 64px 0;
  }
  .doc .toc ol {
    columns: 1;
  }
}
@media (max-width: 600px) {
  .shot-tag {
    display: none;
  }
  .shot {
    margin-top: 36px;
  }
}
@media (max-width: 480px) {
  .nav .btn-primary {
    display: none;
  }
  .notice {
    grid-template-columns: 1fr;
  }
}