/* ==========================================================================
   RapidShield User Guide design system
   Brand: RapidShield (Rapid Emergency System)
   Palette mirrors the mobile app (dark + brand red); type mirrors the
   Enterprise Portal (Syne display / DM Sans body).
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  /* Surfaces */
  --bg:            #0A0A0B;
  --bg-elev:       #0F0F11;
  --surface:       #141417;
  --surface-2:     #1A1A1E;
  --surface-3:     #212127;
  --border:        #26262C;
  --border-soft:   rgba(255,255,255,.07);
  --border-strong: rgba(255,255,255,.14);

  /* Brand */
  --red:           #E53935;
  --red-light:     #EF5350;
  --red-dark:      #B71C1C;
  --red-surface:   rgba(229,57,53,.10);
  --red-border:    rgba(229,57,53,.28);
  --red-glow:      rgba(229,57,53,.22);

  /* Accents (match the in-app tile colours) */
  --green:  #4CAF50;
  --amber:  #FF9800;
  --blue:   #2196F3;
  --violet: #B388FF;
  --teal:   #26C281;
  --sky:    #4FC3F7;
  --indigo: #9C88FF;

  /* Text */
  --text:      #F4F4F6;
  --text-2:    #A6A6AE;
  --text-3:    #74747E;
  --text-dim:  #55555E;

  /* Layout */
  --sidebar-w: 276px;
  --toc-w:     224px;
  --topbar-h:  60px;
  --maxw:      820px;

  --r-sm: 8px;
  --r:    12px;
  --r-lg: 18px;
  --r-xl: 24px;

  --shadow:    0 4px 20px rgba(0,0,0,.45);
  --shadow-lg: 0 18px 48px rgba(0,0,0,.6);

  --font-body:    'DM Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Syne', var(--font-body);
  --font-mono:    ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;

  --t: .18s ease;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--topbar-h) + 20px); }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

/* Ambient brand glow behind the page */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(760px 420px at 12% -8%, rgba(229,57,53,.10), transparent 62%),
    radial-gradient(620px 380px at 92% 4%, rgba(33,150,243,.055), transparent 60%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
:focus-visible { outline: 2px solid var(--red-light); outline-offset: 3px; border-radius: 4px; }

::selection { background: rgba(229,57,53,.35); color: #fff; }

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #2A2A31; border-radius: 99px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #3A3A44; }

/* ---------- Skip link ---------- */
.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 200;
  transform: translateY(-200%);
  background: var(--red); color: #fff; padding: 10px 16px;
  border-radius: var(--r-sm); font-weight: 700; font-size: 13px;
}
.skip-link:focus { transform: none; }

/* ==========================================================================
   Topbar
   ========================================================================== */
.topbar {
  position: fixed; inset: 0 0 auto 0; height: var(--topbar-h); z-index: 60;
  display: flex; align-items: center; gap: 14px;
  padding: 0 20px;
  background: rgba(10,10,11,.82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}

.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand img { width: 34px; height: 34px; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name {
  font-family: var(--font-display); font-weight: 800; font-size: 15px;
  letter-spacing: -.01em;
}
.brand-name em { font-style: normal; color: var(--red); }
.brand-sub {
  font-size: 9.5px; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--text-3);
}

.topbar-spacer { flex: 1; }

.menu-btn {
  display: none; width: 38px; height: 38px; border-radius: var(--r-sm);
  border: 1px solid var(--border); background: var(--surface);
  align-items: center; justify-content: center; color: var(--text-2);
}
.menu-btn:hover { color: var(--text); border-color: var(--border-strong); }

/* Search */
.search {
  position: relative; width: min(340px, 38vw);
}
.search input {
  width: 100%; height: 38px; padding: 0 34px 0 36px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; color: var(--text); font-size: 13.5px;
  transition: border-color var(--t), box-shadow var(--t);
}
.search input::placeholder { color: var(--text-dim); }
.search input:focus {
  outline: none; border-color: var(--red-border);
  box-shadow: 0 0 0 3px rgba(229,57,53,.10);
}
.search .search-icon {
  position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
  color: var(--text-3); pointer-events: none; display: flex;
}
.search kbd {
  position: absolute; right: 9px; top: 50%; transform: translateY(-50%);
  font-family: var(--font-mono); font-size: 10px; color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 5px; padding: 2px 5px;
  background: var(--bg-elev); pointer-events: none;
}
.search input:focus ~ kbd { opacity: 0; }

.search-results {
  position: absolute; top: 46px; left: 0; right: 0; z-index: 70;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r); box-shadow: var(--shadow-lg);
  max-height: min(62vh, 460px); overflow-y: auto; padding: 6px;
  display: none;
}
.search-results.open { display: block; }
.search-results .sr-empty { padding: 16px; color: var(--text-3); font-size: 13px; text-align: center; }
.sr-item {
  display: block; padding: 9px 11px; border-radius: var(--r-sm);
  border-left: 2px solid transparent;
}
.sr-item:hover, .sr-item.active { background: var(--surface-2); border-left-color: var(--red); }
.sr-title { font-size: 13.5px; font-weight: 600; color: var(--text); }
.sr-crumb { font-size: 11px; color: var(--text-3); margin-top: 1px; }
.sr-title mark { background: rgba(229,57,53,.25); color: #fff; border-radius: 3px; padding: 0 2px; }

.top-link {
  font-size: 13px; color: var(--text-2); padding: 7px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface);
  display: inline-flex; align-items: center; gap: 7px; white-space: nowrap;
}
.top-link:hover { color: var(--text); border-color: var(--border-strong); }
.top-link.primary { background: var(--red); border-color: var(--red); color: #fff; font-weight: 600; }
.top-link.primary:hover { background: var(--red-light); }

/* ==========================================================================
   Layout shell
   ========================================================================== */
.shell {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--toc-w);
  gap: 0;
  max-width: 1500px;
  margin: 0 auto;
  padding-top: var(--topbar-h);
}

/* ---------- Sidebar ---------- */
.sidebar {
  position: sticky; top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 26px 18px 60px 20px;
  border-right: 1px solid var(--border);
}
.nav-group + .nav-group { margin-top: 22px; }
.nav-group-title {
  font-size: 10px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase;
  color: var(--text-dim); padding: 0 10px 8px;
}
.nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 10px; border-radius: 8px;
  font-size: 13.5px; color: var(--text-2);
  border-left: 2px solid transparent; margin-left: -2px;
  transition: color var(--t), background var(--t);
}
.nav-link .ni { flex-shrink: 0; opacity: .7; display: flex; }
.nav-link:hover { color: var(--text); background: var(--surface); }
.nav-link.active {
  color: var(--text); background: var(--red-surface);
  border-left-color: var(--red); font-weight: 600;
}
.nav-link.active .ni { opacity: 1; color: var(--red); }
.nav-badge {
  margin-left: auto; font-size: 9px; font-weight: 800; letter-spacing: .06em;
  padding: 2px 6px; border-radius: 20px; text-transform: uppercase;
  background: rgba(255,152,0,.15); color: var(--amber);
}

/* ---------- Main ---------- */
.main { min-width: 0; padding: 34px 44px 110px; }
.content { max-width: var(--maxw); }

/* ---------- On this page ---------- */
.toc {
  position: sticky; top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 34px 20px 60px 6px;
}
.toc-title {
  font-size: 10px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase;
  color: var(--text-dim); margin-bottom: 12px;
}
.toc a {
  display: block; padding: 5px 0 5px 13px; font-size: 12.5px; color: var(--text-3);
  border-left: 2px solid var(--border); line-height: 1.45;
}
.toc a:hover { color: var(--text-2); }
.toc a.active { color: var(--red-light); border-left-color: var(--red); font-weight: 600; }
.toc a.lvl-3 { padding-left: 24px; font-size: 12px; }

/* ==========================================================================
   Page header
   ========================================================================== */
.crumbs {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  font-size: 12px; color: var(--text-3); margin-bottom: 14px;
}
.crumbs a:hover { color: var(--text-2); }
.crumbs .sep { color: var(--text-dim); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 10.5px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase;
  color: var(--red); background: var(--red-surface);
  border: 1px solid var(--red-border); border-radius: 30px;
  padding: 5px 13px; margin-bottom: 18px;
}
.eyebrow.neutral { color: var(--text-2); background: var(--surface); border-color: var(--border); }

h1 {
  font-family: var(--font-display); font-size: clamp(30px, 4.2vw, 42px);
  font-weight: 800; line-height: 1.12; letter-spacing: -.025em;
  margin-bottom: 14px;
}
.lede { font-size: 17px; color: var(--text-2); line-height: 1.68; max-width: 68ch; }

h2 {
  font-family: var(--font-display); font-size: 24px; font-weight: 700;
  letter-spacing: -.015em; line-height: 1.28;
  margin: 56px 0 16px; padding-top: 4px; scroll-margin-top: 84px;
}
h2::before {
  content: ''; display: block; width: 34px; height: 3px; border-radius: 3px;
  background: linear-gradient(90deg, var(--red), rgba(229,57,53,0));
  margin-bottom: 14px;
}
h3 {
  font-size: 17px; font-weight: 700; letter-spacing: -.008em;
  margin: 34px 0 10px; scroll-margin-top: 84px; color: var(--text);
}
h4 { font-size: 14.5px; font-weight: 700; margin: 22px 0 8px; color: var(--text); }

p { margin: 0 0 15px; color: var(--text-2); }
p strong, li strong { color: var(--text); font-weight: 600; }
.main a:not(.nav-link):not(.card):not(.btn):not(.crumbs a) {
  color: var(--red-light); border-bottom: 1px solid rgba(239,83,80,.3);
}
.main a:not(.nav-link):not(.card):not(.btn):not(.crumbs a):hover { border-bottom-color: var(--red-light); }

ul, ol { margin: 0 0 16px; padding-left: 20px; color: var(--text-2); }
li { margin-bottom: 7px; }
li::marker { color: var(--text-dim); }

code {
  font-family: var(--font-mono); font-size: .87em;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 5px; padding: 1.5px 5px; color: #FFB4B2;
}
.kbd {
  font-family: var(--font-body); font-size: 12px; font-weight: 600;
  background: var(--surface-2); border: 1px solid var(--border-strong);
  border-bottom-width: 2px; border-radius: 5px; padding: 1px 7px; color: var(--text);
}

hr { border: 0; border-top: 1px solid var(--border); margin: 44px 0; }

/* Anchor links on headings */
.anchor {
  opacity: 0; margin-left: 8px; color: var(--text-dim); font-size: .72em;
  transition: opacity var(--t);
}
h2:hover .anchor, h3:hover .anchor { opacity: 1; }
.anchor:hover { color: var(--red); }

/* ==========================================================================
   Components
   ========================================================================== */

/* --- Cards / grids --- */
.grid { display: grid; gap: 14px; margin: 22px 0; }
.grid.c2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid.c3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid.c4 { grid-template-columns: repeat(4, minmax(0,1fr)); }

.card {
  display: block; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 18px;
  transition: border-color var(--t), transform var(--t), box-shadow var(--t);
}
a.card:hover {
  border-color: var(--red-border); transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(0,0,0,.42);
}
.card-icon {
  width: 38px; height: 38px; border-radius: 11px;
  display: grid; place-items: center; margin-bottom: 13px;
  background: var(--red-surface); color: var(--red);
}
.card-title { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 4px; letter-spacing: -.01em; }
.card-desc { font-size: 13px; color: var(--text-2); line-height: 1.6; }
.card-meta {
  margin-top: 12px; padding-top: 11px; border-top: 1px solid var(--border);
  font-size: 11.5px; color: var(--text-3); display: flex; align-items: center; gap: 7px;
}
.card-arrow { color: var(--red); font-weight: 700; }

/* Icon tint helpers */
.t-red    { background: rgba(229,57,53,.12);  color: var(--red); }
.t-green  { background: rgba(76,175,80,.12);  color: var(--green); }
.t-amber  { background: rgba(255,152,0,.12);  color: var(--amber); }
.t-blue   { background: rgba(33,150,243,.12); color: var(--blue); }
.t-violet { background: rgba(179,136,255,.12);color: var(--violet); }
.t-teal   { background: rgba(38,194,129,.12); color: var(--teal); }
.t-sky    { background: rgba(79,195,247,.12); color: var(--sky); }
.t-indigo { background: rgba(156,136,255,.12);color: var(--indigo); }
.t-grey   { background: rgba(255,255,255,.06);color: var(--text-2); }

/* --- Callouts --- */
.callout {
  display: flex; gap: 13px; padding: 15px 17px; margin: 22px 0;
  border-radius: var(--r); border: 1px solid var(--border);
  background: var(--surface); border-left-width: 3px;
}
.callout .co-icon { flex-shrink: 0; margin-top: 2px; display: flex; }
.callout .co-body { min-width: 0; }
.callout .co-title {
  font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase;
  margin-bottom: 4px;
}
.callout p { margin: 0; font-size: 13.5px; color: var(--text-2); }
.callout p + p { margin-top: 8px; }
.callout ul { margin: 8px 0 0; font-size: 13.5px; }

.callout.tip     { border-left-color: var(--green);  background: rgba(76,175,80,.05); }
.callout.tip .co-icon, .callout.tip .co-title { color: var(--green); }
.callout.warn    { border-left-color: var(--amber);  background: rgba(255,152,0,.05); }
.callout.warn .co-icon, .callout.warn .co-title { color: var(--amber); }
.callout.danger  { border-left-color: var(--red);    background: rgba(229,57,53,.05); }
.callout.danger .co-icon, .callout.danger .co-title { color: var(--red); }
.callout.premium { border-left-color: var(--amber);  background: linear-gradient(100deg, rgba(255,152,0,.08), rgba(229,57,53,.05)); }
.callout.premium .co-icon, .callout.premium .co-title { color: var(--amber); }
.callout.note    { border-left-color: var(--blue);   background: rgba(33,150,243,.05); }
.callout.note .co-icon, .callout.note .co-title { color: var(--blue); }

/* --- Steps --- */
.steps { list-style: none; padding: 0; margin: 22px 0; counter-reset: step; }
.steps > li {
  position: relative; padding: 0 0 26px 46px; margin: 0;
  counter-increment: step;
}
.steps > li::before {
  content: counter(step);
  position: absolute; left: 0; top: -1px;
  width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--red-surface); border: 1px solid var(--red-border);
  color: var(--red-light); font-size: 12.5px; font-weight: 800;
  font-family: var(--font-display);
}
.steps > li::after {
  content: ''; position: absolute; left: 13.5px; top: 32px; bottom: 4px;
  width: 1px; background: linear-gradient(180deg, var(--border), transparent);
}
.steps > li:last-child { padding-bottom: 0; }
.steps > li:last-child::after { display: none; }
.step-title { font-size: 14.5px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.steps p { margin: 0 0 8px; font-size: 14px; }
.steps ul { font-size: 13.5px; margin-bottom: 8px; }

/* --- Feature rows --- */
.frow {
  display: flex; gap: 15px; padding: 16px 0; border-bottom: 1px solid var(--border);
}
.frow:last-child { border-bottom: 0; }
.frow-icon {
  width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0;
  display: grid; place-items: center;
}
.frow-body { min-width: 0; flex: 1; }
.frow-title { font-size: 14.5px; font-weight: 700; color: var(--text); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.frow-desc { font-size: 13.5px; color: var(--text-2); margin-top: 3px; }

/* --- Pills / badges --- */
.pill {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 9.5px; font-weight: 800; letter-spacing: .07em; text-transform: uppercase;
  padding: 3px 8px; border-radius: 20px; white-space: nowrap;
}
.pill.premium { background: rgba(255,152,0,.14); color: var(--amber); }
.pill.free    { background: rgba(76,175,80,.14); color: var(--green); }
.pill.live    { background: rgba(229,57,53,.16); color: var(--red); }
.pill.estate  { background: rgba(179,136,255,.14); color: var(--violet); }
.pill.staff   { background: rgba(33,150,243,.14); color: var(--blue); }
.pill.web     { background: rgba(255,255,255,.07); color: var(--text-2); }
.pill.dot::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }

/* --- Tables --- */
.table-wrap { overflow-x: auto; margin: 22px 0; border: 1px solid var(--border); border-radius: var(--r); }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 460px; }
th {
  text-align: left; padding: 11px 15px; background: var(--surface-2);
  font-size: 10.5px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-3); border-bottom: 1px solid var(--border); white-space: nowrap;
}
td { padding: 12px 15px; border-bottom: 1px solid var(--border); color: var(--text-2); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: rgba(255,255,255,.017); }
td strong { color: var(--text); }

/* --- Phone mockups (pure CSS illustrations of the app) --- */
.device-row { display: flex; gap: 22px; flex-wrap: wrap; align-items: flex-start; margin: 26px 0; }
.device {
  width: 250px; flex-shrink: 0;
  border-radius: 30px; padding: 9px;
  background: linear-gradient(160deg, #2A2A31, #131316);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg);
}
.device-screen {
  background: #0D0D0D; border-radius: 23px; overflow: hidden;
  border: 1px solid #000; position: relative;
}
.device-notch {
  height: 22px; display: flex; align-items: center; justify-content: center;
  position: relative;
}
.device-notch::after {
  content: ''; width: 62px; height: 15px; border-radius: 0 0 10px 10px; background: #000;
}
.device-body { padding: 4px 12px 14px; }
.device-cap {
  font-size: 11.5px; color: var(--text-3); text-align: center; margin-top: 11px;
  max-width: 250px; line-height: 1.5;
}
.device-cap b { color: var(--text-2); font-weight: 600; }

/* mock primitives */
.m-row { display: flex; align-items: center; gap: 8px; }
.m-avatar { width: 26px; height: 26px; border-radius: 50%; background: var(--red-surface); color: var(--red);
  display: grid; place-items: center; font-size: 11px; font-weight: 800; }
.m-label { font-size: 7.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim); font-weight: 700; }
.m-name  { font-size: 11px; font-weight: 700; color: var(--text); }
.m-icon-btn { width: 24px; height: 24px; border-radius: 50%; background: var(--surface-2);
  border: 1px solid var(--border); display: grid; place-items: center; color: var(--text-3); }
.m-shield {
  margin: 14px auto 12px; width: 88px; height: 88px; border-radius: 50%;
  background: radial-gradient(circle at 50% 45%, rgba(229,57,53,.20), transparent 68%);
  border: 1px solid var(--red-border);
  display: grid; place-items: center; color: var(--red);
  box-shadow: 0 0 30px rgba(229,57,53,.14) inset;
}
.m-status { text-align: center; font-size: 9px; font-weight: 800; letter-spacing: .13em;
  text-transform: uppercase; color: var(--green); margin-bottom: 3px; }
.m-status.off { color: var(--text-3); }
.m-sub { text-align: center; font-size: 8.5px; color: var(--text-3); margin-bottom: 12px; }
.m-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.m-tile {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 8px; min-height: 52px; display: flex; flex-direction: column; justify-content: space-between;
}
.m-tile-ico { width: 20px; height: 20px; border-radius: 6px; display: grid; place-items: center; }
.m-tile-t { font-size: 8.5px; font-weight: 700; color: var(--text); line-height: 1.25; }
.m-tile-s { font-size: 7px; color: var(--text-3); line-height: 1.2; }
.m-tile-top { display: flex; align-items: flex-start; justify-content: space-between; }
.m-mini-pill { font-size: 5.5px; font-weight: 800; letter-spacing: .05em; padding: 2px 4px; border-radius: 20px; }
.m-slider {
  margin-top: 11px; height: 40px; border-radius: 11px; background: var(--surface);
  border: 1px solid var(--border); display: flex; align-items: center; padding: 4px;
  box-shadow: 0 0 14px rgba(229,57,53,.08);
}
.m-slider-knob { width: 32px; height: 32px; border-radius: 8px; background: var(--red); color: #fff;
  display: grid; place-items: center; font-size: 8px; font-weight: 800; letter-spacing: .06em; }
.m-slider-txt { flex: 1; text-align: center; font-size: 8px; font-weight: 700; letter-spacing: .16em; color: var(--text-3); }
.m-nav {
  display: flex; justify-content: space-around; padding: 8px 0 4px; margin: 12px -12px -14px;
  background: #111; border-top: 1px solid var(--border);
}
.m-nav div { display: flex; flex-direction: column; align-items: center; gap: 2px; color: var(--text-dim); font-size: 6.5px; }
.m-nav div.on { color: var(--red); }
.m-section { font-size: 7.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  color: var(--text-dim); margin: 12px 0 6px; }
.m-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 9px; margin-bottom: 7px;
}
.m-card.accent { background: var(--red-surface); border-color: var(--red-border); }
.m-card.good { background: rgba(76,175,80,.08); border-color: rgba(76,175,80,.3); }
.m-t { font-size: 9px; font-weight: 700; color: var(--text); }
.m-d { font-size: 7.5px; color: var(--text-3); line-height: 1.35; }
.m-bar { height: 4px; border-radius: 4px; background: var(--surface-3); overflow: hidden; margin-top: 6px; }
.m-bar i { display: block; height: 100%; background: var(--red); border-radius: 4px; }
.m-code {
  font-family: var(--font-mono); font-size: 17px; font-weight: 700; letter-spacing: .22em;
  color: var(--red-light); text-align: center; padding: 9px 0;
}
.m-map {
  height: 86px; border-radius: 10px; margin: 8px 0;
  background:
    linear-gradient(rgba(229,57,53,.07), rgba(229,57,53,.07)),
    repeating-linear-gradient(0deg, #16161A 0 15px, #131317 15px 16px),
    repeating-linear-gradient(90deg, #16161A 0 19px, #131317 19px 20px);
  border: 1px solid var(--border); position: relative; overflow: hidden;
}
.m-map::after {
  content: ''; position: absolute; left: 50%; top: 50%; width: 13px; height: 13px;
  margin: -6.5px 0 0 -6.5px; border-radius: 50%; background: var(--red);
  box-shadow: 0 0 0 6px rgba(229,57,53,.22), 0 0 0 13px rgba(229,57,53,.10);
}
.m-toggle { width: 24px; height: 14px; border-radius: 20px; background: var(--surface-3); position: relative; flex-shrink: 0; }
.m-toggle::after { content:''; position: absolute; top: 2px; left: 2px; width: 10px; height: 10px; border-radius: 50%; background: var(--text-dim); }
.m-toggle.on { background: rgba(229,57,53,.35); }
.m-toggle.on::after { left: 12px; background: var(--red); }

/* Browser frame (portal screens) */
.browser {
  border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden;
  background: var(--bg-elev); box-shadow: var(--shadow); margin: 24px 0;
}
.browser-bar {
  display: flex; align-items: center; gap: 8px; padding: 9px 13px;
  background: var(--surface-2); border-bottom: 1px solid var(--border);
}
.browser-dots { display: flex; gap: 5px; }
.browser-dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--surface-3); display: block; }
.browser-url {
  flex: 1; font-family: var(--font-mono); font-size: 10.5px; color: var(--text-3);
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  padding: 3px 9px; text-align: center;
}
.browser-body { display: grid; grid-template-columns: 132px 1fr; min-height: 190px; }
.b-side { border-right: 1px solid var(--border); padding: 12px 9px; background: var(--surface); }
.b-side .bs-brand { display: flex; align-items: center; gap: 6px; margin-bottom: 12px; }
.b-side .bs-brand img { width: 18px; height: 18px; }
.b-side .bs-brand span { font-family: var(--font-display); font-size: 10px; font-weight: 800; }
.b-nav { font-size: 9.5px; color: var(--text-3); padding: 5px 8px; border-radius: 6px; display: flex; align-items: center; gap: 6px; }
.b-nav.on { background: var(--red-surface); color: var(--red-light); font-weight: 600; }
.b-main { padding: 14px; }
.b-h { font-family: var(--font-display); font-size: 13px; font-weight: 700; margin-bottom: 10px; }
.b-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; margin-bottom: 11px; }
.b-stat { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 8px; }
.b-stat b { display: block; font-family: var(--font-display); font-size: 14px; color: var(--text); }
.b-stat span { font-size: 7.5px; color: var(--text-3); letter-spacing: .05em; text-transform: uppercase; }
.b-table { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.b-tr { display: grid; grid-template-columns: 1.4fr 1fr 1fr .8fr; gap: 6px; padding: 7px 9px; font-size: 8.5px; color: var(--text-3); border-bottom: 1px solid var(--border); }
.b-tr:last-child { border-bottom: 0; }
.b-tr.head { background: var(--surface-2); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; font-size: 7.5px; }

/* --- Flow diagram --- */
.flow { display: flex; align-items: stretch; gap: 10px; flex-wrap: wrap; margin: 24px 0; }
.flow-node {
  flex: 1 1 128px; min-width: 128px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); padding: 13px; text-align: center;
}
.flow-node .fn-ico { width: 30px; height: 30px; border-radius: 9px; margin: 0 auto 8px; display: grid; place-items: center; }
.flow-node .fn-t { font-size: 12.5px; font-weight: 700; color: var(--text); }
.flow-node .fn-d { font-size: 11px; color: var(--text-3); margin-top: 2px; line-height: 1.45; }
.flow-arrow { display: grid; place-items: center; color: var(--text-dim); flex: 0 0 auto; }
@media (max-width: 720px) { .flow-arrow { transform: rotate(90deg); width: 100%; height: 20px; } }

/* --- FAQ --- */
.faq { border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; margin: 22px 0; }
.faq details { border-bottom: 1px solid var(--border); }
.faq details:last-child { border-bottom: 0; }
.faq summary {
  cursor: pointer; list-style: none; padding: 14px 17px;
  font-size: 14px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; gap: 11px; background: var(--surface);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; margin-left: auto; color: var(--red); font-size: 18px; font-weight: 400;
  line-height: 1; transition: transform var(--t);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { background: var(--surface-2); }
.faq .faq-body { padding: 2px 17px 16px 17px; background: var(--bg-elev); }
.faq .faq-body p:last-child { margin-bottom: 0; }

/* --- Prev / next --- */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 66px; }
.pager a {
  border: 1px solid var(--border); border-radius: var(--r); padding: 15px 17px;
  background: var(--surface); transition: border-color var(--t), transform var(--t);
}
.pager a:hover { border-color: var(--red-border); transform: translateY(-2px); }
.pager .pg-l { font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim); font-weight: 800; }
.pager .pg-t { font-size: 14.5px; font-weight: 700; color: var(--text); margin-top: 3px; }
.pager .next { text-align: right; }
.pager .only-next { grid-column: 2; }

/* --- Hero (index) --- */
.hero {
  border: 1px solid var(--border); border-radius: var(--r-xl);
  padding: 40px 38px;
  background:
    radial-gradient(600px 240px at 88% -10%, rgba(229,57,53,.16), transparent 66%),
    linear-gradient(160deg, var(--surface), var(--bg-elev));
  margin-bottom: 40px; position: relative; overflow: hidden;
}
.hero::after {
  content: ''; position: absolute; right: -70px; bottom: -110px;
  width: 320px; height: 320px; border-radius: 50%;
  background: radial-gradient(circle, rgba(229,57,53,.09), transparent 68%);
}
.hero-logo { width: 78px; margin-bottom: 20px; }
.hero h1 { font-size: clamp(32px, 5vw, 48px); }
.hero .lede { font-size: 17.5px; max-width: 60ch; }
.hero-actions { display: flex; gap: 11px; flex-wrap: wrap; margin-top: 26px; position: relative; z-index: 1; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 11px 20px; border-radius: 10px; font-size: 14px; font-weight: 600;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  transition: all var(--t);
}
.btn:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.btn.primary { background: var(--red); border-color: var(--red); color: #fff; box-shadow: 0 6px 20px var(--red-glow); }
.btn.primary:hover { background: var(--red-light); }

/* --- Audience map (index) --- */
.audience {
  display: grid; gap: 14px; grid-template-columns: repeat(3, minmax(0,1fr)); margin: 24px 0 8px;
}
.aud {
  border: 1px solid var(--border); border-radius: var(--r-lg); padding: 20px;
  background: linear-gradient(165deg, var(--surface), var(--bg-elev));
}
.aud-h { display: flex; align-items: center; gap: 11px; margin-bottom: 12px; }
.aud-h .ah-ico { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; }
.aud-h .ah-t { font-family: var(--font-display); font-size: 15px; font-weight: 700; }
.aud p { font-size: 13px; margin-bottom: 12px; }
.aud ul { list-style: none; padding: 0; margin: 0; font-size: 12.5px; }
.aud li { display: flex; gap: 8px; align-items: flex-start; margin-bottom: 6px; color: var(--text-2); }
.aud li svg { flex-shrink: 0; margin-top: 4px; color: var(--red); }

/* --- Footer --- */
.foot {
  margin-top: 70px; padding-top: 26px; border-top: 1px solid var(--border);
  font-size: 12.5px; color: var(--text-3);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.foot a { color: var(--text-2); }
.foot a:hover { color: var(--red-light); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1220px) {
  .shell { grid-template-columns: var(--sidebar-w) minmax(0,1fr); }
  .toc { display: none; }
  .main { padding: 34px 34px 100px; }
}
@media (max-width: 980px) {
  .shell { grid-template-columns: minmax(0,1fr); }
  .menu-btn { display: flex; }
  .search { width: min(300px, 46vw); }
  .sidebar {
    position: fixed; top: var(--topbar-h); left: 0; bottom: 0; width: 292px; z-index: 55;
    background: var(--bg-elev); transform: translateX(-101%);
    transition: transform .24s cubic-bezier(.4,0,.2,1);
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open { transform: none; }
  .scrim {
    position: fixed; inset: var(--topbar-h) 0 0 0; z-index: 54;
    background: rgba(0,0,0,.6); backdrop-filter: blur(2px);
    opacity: 0; pointer-events: none; transition: opacity .24s;
  }
  .scrim.open { opacity: 1; pointer-events: auto; }
  .main { padding: 28px 22px 90px; }
  .grid.c3, .grid.c4, .audience { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .top-link.hide-sm { display: none; }
}
@media (max-width: 680px) {
  body { font-size: 14.5px; }
  .topbar { padding: 0 14px; gap: 10px; }
  .brand-text { display: none; }
  .search { width: 100%; }
  .search kbd { display: none; }
  .grid.c2, .grid.c3, .grid.c4, .audience { grid-template-columns: minmax(0,1fr); }
  .hero { padding: 28px 22px; border-radius: var(--r-lg); }
  .pager { grid-template-columns: 1fr; }
  .pager .only-next { grid-column: 1; }
  .device { width: 100%; max-width: 268px; }
  .device-cap { max-width: 100%; }
  .browser-body { grid-template-columns: 1fr; }
  .b-side { display: none; }
  .main { padding: 24px 16px 80px; }
}

/* ==========================================================================
   Print
   ========================================================================== */
@media print {
  body { background: #fff; color: #111; }
  body::before, .topbar, .sidebar, .toc, .scrim, .pager, .search { display: none !important; }
  .shell { display: block; padding: 0; max-width: none; }
  .main { padding: 0; }
  .content { max-width: none; }
  a { color: #111 !important; border: 0 !important; }
  .card, .callout, .device, .browser, .faq { break-inside: avoid; border-color: #ccc; }
  h1, h2, h3 { color: #111; break-after: avoid; }
  p, li, td { color: #333; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
}