/* doc.cokwest.top — static promo & guide site. No build step, no external fonts. */
:root {
  --brand: #2f80ed;
  --brand-ink: #1b5bbf;
  --brand-soft: rgba(47, 128, 237, 0.08);
  --ink: #0f172a;
  --ink-2: rgba(15, 23, 42, 0.72);
  --ink-3: rgba(15, 23, 42, 0.56);
  --line: rgba(15, 23, 42, 0.09);
  --bg: #f6f8fb;
  --card: #ffffff;
  --success: #15803d;
  --radius: 16px;
  --shadow: 0 2px 10px rgba(15, 23, 42, 0.05), 0 12px 32px rgba(15, 23, 42, 0.06);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "Noto Sans", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
}
img { max-width: 100%; display: block; }
a { color: var(--brand-ink); text-decoration: none; }
a:hover { text-decoration: underline; }

.page { max-width: 960px; margin: 0 auto; padding: 0 16px 64px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  margin: 0 -16px;
  background: rgba(246, 248, 251, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 800;
  font-size: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand-dot {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), #6ab0ff);
  box-shadow: 0 4px 10px rgba(47, 128, 237, 0.35);
}
.lang-switch { display: flex; gap: 4px; flex: 0 0 auto; }
.lang-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-3);
  text-decoration: none;
}
.lang-switch a[aria-current="true"],
.lang-switch a[aria-current="page"] {
  background: var(--brand-soft);
  color: var(--brand-ink);
}

@media (max-width: 599px) {
  .site-header {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding-top: max(12px, env(safe-area-inset-top));
  }
  .site-header .brand {
    white-space: normal;
    overflow-wrap: anywhere;
  }
  .lang-switch {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 4px;
  }
  .lang-switch a {
    min-width: 0;
    border-radius: 12px;
  }
}
.lang-switch a:focus-visible {
  outline: 2px solid var(--brand-ink);
  outline-offset: 2px;
}
#start { scroll-margin-top: 140px; }

/* Hero */
.hero { padding: 48px 0 28px; text-align: center; }
.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(26px, 6vw, 38px);
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.hero p {
  margin: 0 auto 24px;
  max-width: 560px;
  color: var(--ink-2);
  font-size: clamp(15px, 3.6vw, 18px);
}
.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 26px;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  box-shadow: 0 8px 20px rgba(47, 128, 237, 0.35);
}
.cta:hover { background: var(--brand-ink); text-decoration: none; }
.cta--ghost {
  background: transparent;
  color: var(--brand-ink);
  box-shadow: none;
  border: 1px solid rgba(47, 128, 237, 0.35);
}
.hero .cta-row { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* Sections */
.section { padding: 32px 0 8px; }
.section > h2 {
  margin: 0 0 6px;
  font-size: clamp(20px, 4.6vw, 26px);
  letter-spacing: -0.01em;
}
.section > .section-sub { margin: 0 0 20px; color: var(--ink-3); }

/* Steps */
.steps { display: grid; gap: 12px; grid-template-columns: 1fr; margin: 0; padding: 0; list-style: none; counter-reset: step; }
.steps li {
  counter-increment: step;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.steps li::before {
  content: counter(step);
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand-ink);
  font-weight: 800;
  display: grid;
  place-items: center;
}
.steps strong { display: block; margin-bottom: 2px; }
.steps span { color: var(--ink-2); font-size: 14.5px; }

/* Feature blocks */
.feature {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
  align-items: center;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.feature:first-of-type { border-top: 0; }
.feature .badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  background: #fff4d6;
  color: #8a5a00;
  font-size: 12px;
  font-weight: 700;
  vertical-align: middle;
  margin-left: 8px;
}
.feature h3 { margin: 0 0 8px; font-size: clamp(18px, 4.2vw, 22px); }
.feature .lead { margin: 0 0 12px; color: var(--ink-2); }
.feature ul { margin: 0 0 10px; padding-left: 20px; color: var(--ink-2); }
.feature li { margin: 4px 0; }
.feature .note {
  margin: 0;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--brand-soft);
  color: var(--ink-2);
  font-size: 14px;
}
.shot {
  margin: 0 auto;
  width: min(300px, 82vw);
  border-radius: 24px;
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.14);
  background: #fff;
}
.shot-duo {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: flex-start;
}
.shot-duo .shot {
  width: min(200px, 44vw);
  margin: 0;
}

/* Always-on capability cards */
.always-on {
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.always-on > h3 {
  margin: 0 0 8px;
  font-size: clamp(18px, 4.2vw, 22px);
}
.always-on > .lead {
  margin: 0 0 16px;
  color: var(--ink-2);
}
.cap-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}
.cap-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.cap-card h4 {
  margin: 0 0 10px;
  font-size: 16px;
}
.cap-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--ink-2);
  font-size: 14.5px;
}
.cap-card li {
  margin: 5px 0;
}
@media (min-width: 760px) {
  .cap-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 760px) {
  .feature { grid-template-columns: 1.05fr 0.95fr; }
  .feature:nth-child(even) .shot { order: -1; }
  .steps { grid-template-columns: repeat(3, 1fr); }
}

/* FAQ */
.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 16px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
}
.faq summary {
  cursor: pointer;
  padding: 16px 0;
  font-weight: 700;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq summary::after { content: "+"; color: var(--brand); font-size: 20px; flex: 0 0 auto; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 0 0 16px; color: var(--ink-2); }

/* Footer */
.site-footer {
  margin-top: 40px;
  padding: 28px 16px 12px;
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--ink-3);
  font-size: 14px;
}
.site-footer .cta-row { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }

/* Captions describe the actual preview state, not an implied successful action. */
.screenshot { margin: 0; min-width: 0; text-align: center; }
.screenshot figcaption, .screenshot-disclaimer {
  color: var(--ink-2); font-size: 14px; line-height: 1.6;
}
.screenshot figcaption { max-width: 320px; margin: 12px auto 0; }
.shot-sequence { display: grid; gap: 28px; }
@media (min-width: 760px) {
  .feature:nth-child(even) > .screenshot { order: -1; }
}

/* Landing page: short service overview; detailed steps live under /<language>/guide/. */
.site-header a.brand { color: var(--ink); text-decoration: none; }
.landing .hero { padding: 56px 0 32px; }
.hero .eyebrow { color: var(--brand-ink); font-size: 13px; font-weight: 700; margin-bottom: 16px; }
.benefit-grid, .showcase-grid { display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 20px; }
.benefit-card { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.benefit-card h3, .showcase-card h3 { margin: 0 0 8px; font-size: 18px; }
.benefit-card p, .showcase-card p { margin: 0; color: var(--ink-2); font-size: 15px; }
.showcase-card { min-width: 0; margin: 0; text-align: center; }
.showcase-card img { width: min(100%, 280px); height: auto; margin: 0 auto; border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); }
.showcase-card figcaption { max-width: 300px; margin: 20px auto 0; }
.landing .steps { margin-top: 20px; }
.service-note { margin: 20px 0 0; color: var(--ink-2); font-size: 14px; }
.landing .site-footer h2 { color: var(--ink); font-size: 20px; margin: 0 0 20px; }
.guide-hero .back-link { display: inline-flex; align-items: center; min-height: 44px; margin-bottom: 12px; }
a:focus-visible { outline: 2px solid var(--brand-ink); outline-offset: 3px; }
.cta--ghost:hover { color: white; }
@media (min-width: 760px) {
 .benefit-grid, .showcase-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Hosting comes first; Telegram is the management interface. */
#features { scroll-margin-top: 140px; }
.service-groups { display: grid; gap: 16px; margin-top: 20px; }
.service-group { min-width: 0; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.service-group h3 { margin: 0 0 18px; font-size: 20px; line-height: 1.3; }
.service-group ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.service-group li { display: grid; gap: 4px; }
.service-group li strong { font-size: 16px; }
.service-group li span { color: var(--ink-2); font-size: 15px; line-height: 1.6; }
.feature-cost { margin: 18px 0 0; padding-top: 14px; border-top: 1px solid var(--line); color: var(--ink-2); font-size: 13px; line-height: 1.6; }
@media (min-width: 960px) { .service-groups { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 599px) {
 .landing .hero { padding: 32px 0 20px; text-align: left; }
 .landing .hero h1 { font-size: clamp(28px, 8vw, 36px); line-height: 1.2; }
 .landing .hero p { margin-left: 0; }
 .landing .hero .cta-row { justify-content: flex-start; }
 .landing .section { padding-top: 28px; }
 .service-group { padding: 18px; }
}

.guide-entry { margin: 0 0 24px; }