/* oeHostsApp intro page. Brand greens follow oeHub (BC100 #dff2b8, BC300 #a8d878, BC500 #7ab84a, BC700 #5a9e2f). */
:root {
  --bc100: #dff2b8;
  --bc300: #a8d878;
  --bc500: #7ab84a;
  --bc700: #5a9e2f;
  --bg: #ffffff;
  --bg-alt: #f6f8f3;
  --fg: #1f2a1a;
  --muted: #5b6656;
  --line: #dee2e6;
  --card: #ffffff;
  --code-bg: #f1f3ef;
  --link: #3f7a1c;
  --shadow: 0 12px 40px rgba(40, 60, 20, 0.14);
  --mono: 'Consolas', 'Monaco', 'Courier New', monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141812;
    --bg-alt: #1b2018;
    --fg: #e6ecdf;
    --muted: #a3ad9b;
    --line: #2f362b;
    --card: #1e241b;
    --code-bg: #0f120d;
    --link: #a8d878;
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 64px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Malgun Gothic", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

code { font-family: var(--mono); font-size: 0.92em; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }

/* ---- navbar ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bc300);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.nav-inner { display: flex; align-items: center; gap: 24px; height: 56px; }
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: #1f2a1a; font-weight: 700; font-size: 1.1rem;
}
.brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 20px; margin-left: 8px; }
.nav-links a, .lang { color: #1f2a1a; font-weight: 600; font-size: 0.95rem; }
.lang {
  margin-left: auto;
  padding: 4px 12px;
  border: 1px solid rgba(31, 42, 26, 0.35);
  border-radius: 6px;
}
.lang:hover { background: var(--bc100); text-decoration: none; }

/* ---- hero ---- */
.hero {
  background: linear-gradient(180deg, var(--bc100) 0%, var(--bg) 78%);
  padding: 64px 0 24px;
  text-align: center;
}
@media (prefers-color-scheme: dark) {
  .hero { background: linear-gradient(180deg, #24301c 0%, var(--bg) 78%); }
}
.hero-logo { display: block; margin: 0 auto 20px; }
.hero h1 {
  margin: 0 auto;
  max-width: 860px;
  font-size: clamp(1.7rem, 4.2vw, 2.8rem);
  line-height: 1.3;
  letter-spacing: -0.02em;
}
.lead { max-width: 720px; margin: 20px auto 0; font-size: 1.12rem; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 28px; }
.meta {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 10px;
  margin: 32px 0 0; font-size: 0.92rem; color: var(--muted);
}
.badge {
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--bc100);
  border: 1px solid var(--bc300);
  color: #2d4a17;
  font-weight: 600;
  font-family: var(--mono);
  font-size: 0.85rem;
}
.hero-shot { margin: 48px auto 0; max-width: 1040px; }
.hero-shot img, .shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  background: #fff;
}

/* ---- buttons ---- */
.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--fg);
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { text-decoration: none; border-color: var(--bc500); }
.btn-primary { background: var(--bc300); border-color: var(--bc300); color: #1f2a1a; }
.btn-primary:hover { background: var(--bc500); border-color: var(--bc500); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 0.92rem; }

/* ---- sections ---- */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); }
.section h2 { margin: 0; font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -0.01em; }
.section-lead { margin: 8px 0 32px; color: var(--muted); font-size: 1.05rem; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
}
.card h3 { margin: 14px 0 8px; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.97rem; }
.card-icon {
  display: inline-block;
  width: 44px; height: 44px;
  border-radius: 10px;
  background-color: var(--bc100);
  position: relative;
}
.card-icon::after {
  content: "";
  position: absolute; inset: 10px;
  background-color: var(--bc700);
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
}
.icon-hosts { --icon: url("/img/icon-hosts.svg"); }
.icon-proxy { --icon: url("/img/icon-proxy.svg"); }
.icon-network { --icon: url("/img/icon-network.svg"); }
.icon-mobile { --icon: url("/img/icon-mobile.svg"); }

.video {
  position: relative;
  max-width: 1040px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #000;
}
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.shot { margin: 32px 0 0; }
.shot figcaption { margin-top: 12px; color: var(--muted); font-size: 0.97rem; text-align: center; }

/* ---- install ---- */
.tabs { display: flex; flex-wrap: wrap; gap: 4px; border-bottom: 1px solid var(--line); }
.tabs button {
  padding: 10px 18px;
  border: 0;
  border-bottom: 3px solid transparent;
  background: none;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.tabs button[aria-selected="true"] { color: var(--fg); border-bottom-color: var(--bc500); }
.tabs button:hover { color: var(--fg); }
.pane { padding: 20px 0 4px; }
.pane > p { margin: 0 0 12px; }
.pane .sub { margin-top: 16px; font-weight: 600; }
.pane .script-link { margin: 6px 0 0; font-size: 0.88rem; }
/* Without JavaScript all panes show (intro.js hides the unselected ones); space them apart. */
.pane + .pane { border-top: 1px dashed var(--line); }
.tabs-ready ~ .pane { border-top: 0; }

.code {
  position: relative;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.code pre {
  margin: 0;
  padding: 14px 88px 14px 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.93rem;
  line-height: 1.6;
}
.code pre code { font-size: inherit; }
.copy {
  position: absolute; top: 8px; right: 8px;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--card);
  color: var(--fg);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}
.copy:hover { border-color: var(--bc500); }
.copy.done { background: var(--bc100); border-color: var(--bc300); color: #2d4a17; }

.req {
  margin-top: 36px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--bc300);
  border-radius: 8px;
  background: var(--card);
}
.req h3 { margin: 0 0 8px; font-size: 1.05rem; }
.req ul { margin: 0; padding-left: 20px; }
.req li { margin: 4px 0; }
.muted { color: var(--muted); font-size: 0.93rem; margin: 12px 0 0; }

/* ---- quick start ---- */
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: 14px; }
.steps li {
  counter-increment: step;
  position: relative;
  padding: 18px 20px 18px 72px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
}
.steps li::before {
  content: counter(step);
  position: absolute; left: 20px; top: 18px;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--bc300);
  color: #1f2a1a;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.steps h3 { margin: 0 0 4px; font-size: 1.05rem; }
.steps p { margin: 0; color: var(--muted); }
.more { margin: 24px 0 0; }

/* ---- footer ---- */
.footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 0.92rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.footer img { vertical-align: -4px; }

@media (max-width: 720px) {
  .nav-links { display: none; }
  .hero { padding-top: 40px; }
  .section { padding: 52px 0; }
  .steps li { padding-left: 64px; }
}