/* ==========================================================================
   HWinRemote — 소개 사이트
   ========================================================================== */
:root {
  --brand: #1478c8;
  --brand-2: #38b2ff;
  --brand-ink: #0d5a99;
  --bg: #ffffff;
  --bg-alt: #f4f8fc;
  --surface: #ffffff;
  --line: #e2e9f1;
  --ink: #0f1b2a;
  --ink-2: #4a5b70;
  --ink-3: #7a8a9d;
  --ok: #1aa35c;
  --warn: #e0a100;
  --bad: #e0453a;
  --chat-bg: #dfe9f2;
  --bubble-me: #d8f5c8;
  --bubble-bot: #ffffff;
  --shadow: 0 1px 2px rgba(15, 27, 42, .06), 0 8px 28px rgba(15, 27, 42, .08);
  --radius: 16px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b131d; --bg-alt: #0f1a27; --surface: #132131; --line: #1f3145;
    --ink: #e7eef6; --ink-2: #a9b8c9; --ink-3: #7d8fa4; --brand-ink: #6cc3ff;
    --chat-bg: #0e1824; --bubble-me: #2b5278; --bubble-bot: #182533;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b131d; --bg-alt: #0f1a27; --surface: #132131; --line: #1f3145;
  --ink: #e7eef6; --ink-2: #a9b8c9; --ink-3: #7d8fa4; --brand-ink: #6cc3ff;
  --chat-bg: #0e1824; --bubble-me: #2b5278; --bubble-bot: #182533;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px rgba(0, 0, 0, .35);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", "Malgun Gothic", "맑은 고딕", sans-serif;
  font-size: 16px; line-height: 1.65; word-break: keep-all; overflow-wrap: anywhere;
}
img { max-width: 100%; display: block; }
a { color: var(--brand-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  font-family: ui-monospace, SFMono-Regular, Consolas, "D2Coding", monospace; font-size: .88em;
  background: var(--bg-alt); border: 1px solid var(--line); padding: .08em .4em; border-radius: 6px;
}
.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.wrap.narrow { max-width: 820px; }
.muted { color: var(--ink-3); }

/* ------------------------------------------------------------------ 버튼 */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  border-radius: 12px; padding: 11px 18px; font-weight: 700; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; text-decoration: none !important; transition: transform .12s, box-shadow .12s, background .12s;
  font-family: inherit; white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: linear-gradient(180deg, var(--brand-2), var(--brand)); color: #fff; box-shadow: 0 6px 18px rgba(20, 120, 200, .28); }
.btn-primary:hover { box-shadow: 0 8px 24px rgba(20, 120, 200, .38); }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand-2); }
.btn-sm { padding: 8px 14px; font-size: 14px; border-radius: 10px; }
.btn-lg { padding: 14px 22px; font-size: 16px; }
.icon-btn {
  display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-2); cursor: pointer;
}
.icon-btn:hover { color: var(--brand-ink); border-color: var(--brand-2); }

/* ------------------------------------------------------------------ 내비 */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(12px); -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--ink); letter-spacing: -.01em; }
.brand:hover { text-decoration: none; }
.brand img { border-radius: 8px; }
.menu { display: flex; gap: 22px; margin-left: 8px; }
.menu a { color: var(--ink-2); font-weight: 600; font-size: 15px; }
.menu a:hover { color: var(--ink); text-decoration: none; }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.menu-toggle { display: none; }

/* ------------------------------------------------------------------ 히어로 */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 480px at 85% -10%, rgba(56, 178, 255, .22), transparent 60%),
    radial-gradient(700px 420px at -10% 20%, rgba(20, 120, 200, .12), transparent 60%);
}
.hero-in { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; padding: 72px 20px 80px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--line); color: var(--ink-2); font-size: 13.5px; font-weight: 600; box-shadow: var(--shadow);
}
.pill:hover { text-decoration: none; border-color: var(--brand-2); }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px rgba(26, 163, 92, .15); }
h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.18; letter-spacing: -.035em; margin: 20px 0 18px; font-weight: 800; }
h1 em { font-style: normal; background: linear-gradient(90deg, var(--brand-2), var(--brand)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 18px; color: var(--ink-2); max-width: 560px; margin: 0 0 28px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-points { list-style: none; padding: 0; margin: 28px 0 0; display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--ink-2); font-size: 14.5px; }
.hero-points li::before { content: "✓"; color: var(--ok); font-weight: 800; margin-right: 6px; }

/* 텔레그램 폰 목업 */
.phone {
  justify-self: center; width: 100%; max-width: 400px; border-radius: 30px; overflow: hidden;
  background: var(--chat-bg); border: 1px solid var(--line); box-shadow: 0 30px 80px rgba(15, 27, 42, .22), var(--shadow);
}
.phone-top { display: flex; align-items: center; gap: 10px; padding: 14px 16px; background: var(--surface); border-bottom: 1px solid var(--line); }
.phone-top img { border-radius: 50%; }
.phone-top b { display: block; font-size: 15px; line-height: 1.2; }
.phone-top small { color: var(--brand-ink); font-size: 12px; }
.chat { padding: 16px 12px 10px; display: flex; flex-direction: column; gap: 10px; min-height: 380px; }
.msg { max-width: 88%; padding: 9px 12px; border-radius: 14px; font-size: 13.5px; line-height: 1.5; box-shadow: 0 1px 1px rgba(0, 0, 0, .06); }
.msg.me { align-self: flex-end; background: var(--bubble-me); border-bottom-right-radius: 4px; font-family: ui-monospace, Consolas, monospace; }
.msg.bot { align-self: flex-start; background: var(--bubble-bot); border-bottom-left-radius: 4px; }
.msg.ok { border-left: 3px solid var(--ok); }
.kb { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-top: 10px; }
.kb span, .phone-kb span {
  display: block; text-align: center; padding: 7px 4px; border-radius: 9px; font-size: 12.5px; font-weight: 600;
  background: color-mix(in srgb, var(--brand-2) 16%, var(--bubble-bot)); color: var(--brand-ink);
}
.phone-kb { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; padding: 10px; background: var(--surface); border-top: 1px solid var(--line); }
.phone-kb span { background: var(--bg-alt); color: var(--ink-2); }

/* ------------------------------------------------------------------ 스트립 */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-alt); }
.strip-in { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; padding: 26px 20px; text-align: center; }
.strip strong { display: block; font-size: 26px; font-weight: 800; letter-spacing: -.02em; color: var(--brand-ink); }
.strip span { color: var(--ink-2); font-size: 14px; }

/* ------------------------------------------------------------------ 섹션 */
.section { padding: 88px 0; }
.section.alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0 0 8px; color: var(--brand-ink); font-weight: 800; font-size: 14px; letter-spacing: .06em; }
h2 { font-size: clamp(26px, 3.4vw, 38px); line-height: 1.25; letter-spacing: -.03em; margin: 0 0 14px; font-weight: 800; }
h3 { font-size: 18px; margin: 0 0 8px; letter-spacing: -.01em; }
.sub { color: var(--ink-2); font-size: 17px; max-width: 760px; margin: 0 0 36px; }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
  transition: transform .15s, border-color .15s;
}
.card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--brand-2) 50%, var(--line)); }
.card p { color: var(--ink-2); margin: 0; font-size: 14.5px; }
.card .ic { width: 44px; height: 44px; display: grid; place-items: center; font-size: 22px; border-radius: 12px; background: var(--bg-alt); margin-bottom: 14px; }
.card.accent { background: linear-gradient(160deg, color-mix(in srgb, var(--brand-2) 14%, var(--surface)), var(--surface)); border-color: color-mix(in srgb, var(--brand-2) 45%, var(--line)); }

/* RDP */
.split { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: start; }
.steps { padding-left: 0; list-style: none; counter-reset: s; margin: 0; }
.steps li { counter-increment: s; position: relative; padding: 0 0 18px 46px; color: var(--ink-2); }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 800; font-size: 14px; color: #fff; background: var(--brand);
}
.steps b { color: var(--ink); }
.check-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.checks { list-style: none; padding: 0; margin: 0 0 16px; }
.checks li { padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 15px; }
.checks li:last-child { border-bottom: 0; }
.checks em { color: var(--bad); font-style: normal; font-size: 13px; font-weight: 700; }
.checks .ok { color: var(--ok); } .checks .bad { color: var(--bad); } .checks .warn { color: var(--warn); }
.note { margin: 0; font-size: 14px; color: var(--ink-2); background: var(--bg-alt); border-radius: 10px; padding: 12px 14px; }

/* 명령어 탭 */
.tabs { display: inline-flex; gap: 4px; padding: 4px; background: var(--bg-alt); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 18px; }
.tabs button {
  border: 0; background: transparent; color: var(--ink-2); font: inherit; font-weight: 700; font-size: 15px; padding: 8px 18px; border-radius: 9px; cursor: pointer;
}
.tabs button[aria-selected="true"] { background: var(--surface); color: var(--ink); box-shadow: var(--shadow); }
.cmd { width: 100%; border-collapse: separate; border-spacing: 0; box-shadow: var(--shadow); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.cmd td { padding: 14px 18px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 15px; }
.cmd tr:last-child td { border-bottom: 0; }
.cmd td:first-child { width: 42%; white-space: nowrap; }
.cmd td:last-child { color: var(--ink-2); }

/* 설치 단계 */
.howto { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.how { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.how .n { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(180deg, var(--brand-2), var(--brand)); color: #fff; font-weight: 800; margin-bottom: 12px; }
.how p { color: var(--ink-2); margin: 0; font-size: 14.5px; }

/* 다운로드 */
.dl-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.dl-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 14px; }
.dl-card[hidden] { display: none; }
.dl-grid > .dl-card { min-width: 0; }
.dl-card.primary { border-color: color-mix(in srgb, var(--brand-2) 55%, var(--line)); background: linear-gradient(170deg, color-mix(in srgb, var(--brand-2) 10%, var(--surface)), var(--surface) 60%); }
.dl-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.dl-head h3 { margin: 0; font-size: 20px; }
.tag { font-size: 12px; font-weight: 800; color: #fff; background: var(--ok); padding: 2px 8px; border-radius: 999px; vertical-align: middle; margin-left: 4px; }
.size { color: var(--ink-3); font-weight: 700; font-size: 14px; white-space: nowrap; }
.dl-card p { margin: 0; color: var(--ink-2); font-size: 15px; }
.dl-btn { align-self: flex-start; }
.dl-btn.disabled { opacity: .5; pointer-events: none; }
.hash { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--ink-3); flex-wrap: wrap; }
.hash code { font-size: 11.5px; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1 1 200px; }
.copy { border: 1px solid var(--line); background: var(--surface); color: var(--ink-2); border-radius: 8px; font: inherit; font-size: 12px; padding: 3px 9px; cursor: pointer; }
.copy:hover { border-color: var(--brand-2); color: var(--brand-ink); }
.fine { margin: 22px 0 0; color: var(--ink-3); font-size: 14px; }

/* 보안 */
.grid.sec { grid-template-columns: repeat(3, 1fr); }
.sec-item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.sec-item h3 { font-size: 16px; }
.sec-item h3::before { content: "🔐 "; }
.sec-item p { margin: 0; color: var(--ink-2); font-size: 14.5px; }

/* 변경 내역 */
.history { display: flex; flex-direction: column; gap: 14px; }
.rel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.rel-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }
.rel-head b { font-size: 18px; }
.rel-head .date { color: var(--ink-3); font-size: 14px; }
.rel-head .latest { font-size: 12px; font-weight: 800; color: #fff; background: var(--brand); padding: 2px 8px; border-radius: 999px; }
.rel ul { margin: 0; padding-left: 20px; color: var(--ink-2); }
.rel li { margin: 3px 0; }

/* FAQ */
details { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 4px 20px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; position: relative; padding-right: 28px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 10px; font-size: 22px; color: var(--ink-3); transition: transform .15s; }
details[open] summary::after { transform: rotate(45deg); }
details p { margin: 0 0 16px; color: var(--ink-2); }

/* 푸터 */
.foot { border-top: 1px solid var(--line); padding: 40px 0 56px; }
.foot-in { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: flex-start; }
.foot p { margin: 6px 0 0; font-size: 14px; }
.foot-meta { text-align: right; }

/* ------------------------------------------------------------------ 반응형 */
@media (max-width: 1000px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .howto { grid-template-columns: repeat(2, 1fr); }
  .grid.sec { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .menu {
    position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; gap: 0; margin: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 20px 14px; display: none;
  }
  .menu.open { display: flex; }
  .menu a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .menu a:last-child { border-bottom: 0; }
  .menu-toggle { display: inline-grid; }
  .hero-in { grid-template-columns: 1fr; padding: 44px 20px 56px; gap: 36px; }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .dl-grid { grid-template-columns: 1fr; }
  .strip-in { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 64px 0; }
  .foot-meta { text-align: left; }
}
@media (max-width: 560px) {
  .grid, .howto, .grid.sec { grid-template-columns: 1fr; }
  .nav-actions .btn-sm { display: none; }
  .cta .btn { flex: 1 1 100%; }
  .cmd td:first-child { white-space: normal; width: 46%; }
  .cmd td { padding: 12px 14px; font-size: 14px; }
  .tabs { display: flex; }
  .tabs button { flex: 1; padding: 8px 6px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}