/* ============================================================
   AiDA SDR · landing page
   Aesthetic: Linear/Vercel-inspired
   Dark midnight hero + warm-white content; indigo + emerald
   ============================================================ */

:root {
  --bg: #fafaf7;
  --bg-card: #ffffff;
  --bg-soft: #f3f2ed;
  --bg-dark: #0a0a12;
  --bg-dark-2: #0d0d18;
  --ink: #16161d;
  --ink-soft: #3c3c47;
  --ink-mute: #6b6b78;
  --ink-faint: #9a9aa6;
  --line: #e6e4dc;
  --line-soft: #ededea;
  --line-dark: rgba(255,255,255,0.08);
  --line-dark-2: rgba(255,255,255,0.14);
  --indigo: #6366f1;
  --indigo-2: #818cf8;
  --indigo-soft: #eef0ff;
  --indigo-deep: #4338ca;
  --emerald: #10b981;
  --emerald-soft: #d1fae5;
  --amber: #f59e0b;
  --rose: #f43f5e;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 22px;
  --shadow-card: 0 1px 0 rgba(20,20,30,0.04), 0 1px 2px rgba(20,20,30,0.04), 0 6px 24px -8px rgba(20,20,30,0.06);
  --shadow-lift: 0 1px 0 rgba(20,20,30,0.04), 0 2px 4px rgba(20,20,30,0.06), 0 24px 48px -16px rgba(20,20,30,0.14);
  --sans: 'Geist', ui-sans-serif, system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --serif: 'Instrument Serif', 'Times New Roman', serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
/* Smooth in-page nav (Signals / Outreach / Pricing anchors) and land the
   target section a touch below the top instead of flush against it. Smooth
   scroll also lets the reveal-on-scroll sections fade in as you travel, so
   "Pricing" visibly scrolls to pricing instead of hard-jumping to a section
   that's still at opacity:0. */
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.005em;
}
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; padding: 0; }
a { color: inherit; text-decoration: none; }

/* ---------- layout helpers ---------- */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.wrap-narrow { max-width: 920px; margin: 0 auto; padding: 0 32px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 500;
}
.eyebrow-indigo { color: var(--indigo); }
.eyebrow-on-dark { color: rgba(255,255,255,0.55); }

h1, h2, h3, h4 { font-family: var(--sans); font-weight: 500; letter-spacing: -0.025em; margin: 0; }
h1 { font-size: clamp(40px, 5.4vw, 72px); line-height: 1.02; letter-spacing: -0.035em; font-weight: 500; }
h2 { font-size: clamp(32px, 3.8vw, 52px); line-height: 1.05; letter-spacing: -0.03em; }
h3 { font-size: 22px; line-height: 1.25; }
h4 { font-size: 16px; line-height: 1.3; font-weight: 500; }

.serif-it { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: -0.01em; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 44px; padding: 0 18px; border-radius: 999px;
  font-size: 14.5px; font-weight: 500; letter-spacing: -0.005em;
  transition: transform 120ms ease, background 160ms ease, color 160ms ease, box-shadow 160ms ease;
  white-space: nowrap;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #2a2a35; }
.btn-indigo { background: var(--indigo); color: #fff; box-shadow: 0 6px 20px -6px rgba(99,102,241,0.55), inset 0 1px 0 rgba(255,255,255,0.15); }
.btn-indigo:hover { background: #5558ea; transform: translateY(-1px); }
.btn-ghost-light { color: #fff; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); }
.btn-ghost-light:hover { background: rgba(255,255,255,0.1); }
.btn-ghost-dark { color: var(--ink); background: transparent; border: 1px solid var(--line); }
.btn-ghost-dark:hover { border-color: var(--ink); }
.btn-sm { height: 36px; padding: 0 14px; font-size: 13.5px; }

.arrow { display: inline-block; transition: transform 200ms ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- nav ---------- */
.nav {
  /* Non-sticky: positioned at the top of the page and scrolls away with the
     hero (position: absolute, not fixed). No scroll listener, no pill. */
  position: absolute; top: 14px; left: 0; right: 0; z-index: 50;
  display: flex; justify-content: center; pointer-events: none;
}
.nav-inner {
  pointer-events: auto;
  display: flex; align-items: center; gap: 28px;
  padding: 8px 8px 8px 20px;
  background: transparent;
  color: #fff;
}
/* Transparent, non-sticky nav: the white-text logo and links sit directly over
   the hero. No background pill, no backdrop-filter, no scroll state. */
.nav-logo { display: flex; align-items: center; gap: 9px; font-weight: 600; font-size: 15px; letter-spacing: -0.01em; }
.nav-logo-img {
  height: 60px; width: auto; display: block;
  transition: filter 200ms ease;
  /* The chrome wordmark is the on-dark logo, but on the near-black hero its
     navy bevels muddied (read as "too dark"). A tight light edge separates it
     from the background and a soft indigo glow gives it depth — crisp and
     premium, with NO opaque pill/box behind it. */
  filter: drop-shadow(0 0 1px rgba(255,255,255,0.6)) drop-shadow(0 6px 18px rgba(129,140,248,0.5));
}
@media (max-width: 640px) {
  .nav-logo-img { height: 42px; }
}
.nav-mark { width: 22px; height: 22px; border-radius: 6px; background: linear-gradient(135deg, #818cf8, #6366f1 55%, #4338ca); position: relative; overflow: hidden; }
.nav-mark::after { content: ''; position: absolute; inset: 4px; border: 1.5px solid rgba(255,255,255,0.55); border-radius: 3px; border-bottom: none; border-right: none; }
.nav-links { display: flex; gap: 22px; font-size: 14px; }
.nav-link { color: rgba(255,255,255,0.7); transition: color 160ms; }
.nav-link:hover { color: #fff; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  background: var(--bg-dark);
  color: #fff;
  overflow: hidden;
  padding: 140px 0 100px;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 600px at 18% 18%, rgba(99,102,241,0.28), transparent 60%),
    radial-gradient(700px 500px at 92% 8%, rgba(67,56,202,0.32), transparent 65%),
    radial-gradient(1200px 800px at 50% 110%, rgba(16,185,129,0.10), transparent 65%);
  pointer-events: none;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 12px 6px 8px; border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: rgba(255,255,255,0.78);
  margin-bottom: 28px;
}
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--emerald); box-shadow: 0 0 12px var(--emerald); animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.45; } }

.hero h1 { max-width: 14ch; }
.hero h1 .accent { color: var(--indigo-2); font-style: italic; font-family: var(--serif); font-weight: 400; letter-spacing: -0.02em; }
.hero-sub { margin-top: 26px; max-width: 56ch; color: rgba(255,255,255,0.7); font-size: 19px; line-height: 1.55; }
.hero-ctas { margin-top: 36px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero-meta { margin-top: 30px; display: flex; gap: 24px; flex-wrap: wrap; color: rgba(255,255,255,0.55); font-size: 13px; }
.hero-meta b { color: #fff; font-weight: 500; }

/* signal stat callout */
.hero-stat {
  margin-top: 70px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  overflow: hidden;
}
.hero-stat > div { padding: 28px 30px; border-right: 1px solid rgba(255,255,255,0.06); }
.hero-stat > div:last-child { border-right: none; }
.hero-stat .num { font-size: 44px; line-height: 1; font-weight: 500; letter-spacing: -0.04em; }
.hero-stat .num .em { color: var(--indigo-2); }
.hero-stat .lbl { margin-top: 10px; font-size: 13px; color: rgba(255,255,255,0.6); }

/* hero product visual (right column on wide) */
.hero-row { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
@media (max-width: 980px) {
  .hero-row { grid-template-columns: 1fr; gap: 60px; }
  .hero { padding: 120px 0 80px; }
}

.signal-stream {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg);
  padding: 14px;
  box-shadow: 0 30px 80px -30px rgba(99,102,241,0.45), 0 2px 0 rgba(255,255,255,0.04) inset;
}
.ss-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 10px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.ss-head .ttl { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.55); }
.ss-head .live { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 11px; color: rgba(255,255,255,0.78); }
.ss-head .live .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--emerald); box-shadow: 0 0 8px var(--emerald); animation: pulse 1.6s infinite; }
.ss-row {
  display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center;
  padding: 11px 10px; border-radius: 10px;
  font-size: 13.5px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.ss-row:last-child { border-bottom: none; }
.ss-row .icn {
  width: 30px; height: 30px; border-radius: 8px;
  display: grid; place-items: center;
  background: rgba(99,102,241,0.18); color: var(--indigo-2);
  border: 1px solid rgba(99,102,241,0.25);
}
.ss-row .who { color: #fff; font-weight: 500; }
.ss-row .what { color: rgba(255,255,255,0.55); font-size: 12.5px; margin-top: 1px; }
.ss-row .meta { font-family: var(--mono); font-size: 11px; color: rgba(255,255,255,0.45); text-align: right; }
.ss-row .score { display: inline-block; padding: 3px 8px; border-radius: 999px; font-family: var(--mono); font-size: 11px; background: rgba(16,185,129,0.14); color: var(--emerald); border: 1px solid rgba(16,185,129,0.22); margin-top: 4px; }
.ss-row.fresh { animation: slideIn 600ms ease-out; }
@keyframes slideIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- trust strip ---------- */
.trust {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.5);
  padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.trust .lbl { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; text-align: center; margin-bottom: 22px; }
.trust-row { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 32px; }
.trust-item { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; letter-spacing: -0.01em; color: rgba(255,255,255,0.7); }
.trust-item svg { color: rgba(255,255,255,0.5); }

/* ---------- section base ---------- */
.section { padding: 120px 0; position: relative; }
.section-tight { padding: 88px 0; }
.section-dark { background: var(--bg-dark); color: #fff; }
.section-head { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: end; margin-bottom: 60px; }
@media (max-width: 820px) { .section-head { grid-template-columns: 1fr; gap: 24px; } }
.section-head .lede { color: var(--ink-mute); max-width: 48ch; font-size: 17px; line-height: 1.55; }
.section-dark .section-head .lede { color: rgba(255,255,255,0.65); }
.section-head h2 { margin-top: 14px; }

/* ---------- signal grid ---------- */
.signals-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}
.sig {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: border-color 200ms ease, transform 200ms ease, box-shadow 200ms ease;
  cursor: pointer;
}
.sig:hover { border-color: rgba(99,102,241,0.4); box-shadow: var(--shadow-card); }
.sig.expanded { background: #fff; border-color: rgba(99,102,241,0.4); box-shadow: var(--shadow-lift); }
.sig .num { position: absolute; top: 22px; right: 24px; font-family: var(--mono); font-size: 11px; color: var(--ink-faint); letter-spacing: 0.05em; }
.sig .ico {
  width: 44px; height: 44px; border-radius: 11px;
  display: grid; place-items: center;
  background: var(--indigo-soft); color: var(--indigo);
  margin-bottom: 18px;
}
.sig h3 { font-size: 19px; letter-spacing: -0.015em; }
.sig .one { color: var(--ink-mute); font-size: 14.5px; margin-top: 8px; line-height: 1.5; }
.sig .detail {
  margin-top: 0;
  max-height: 0;
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
  transition: max-height 320ms ease, margin-top 320ms ease, opacity 200ms ease;
  opacity: 0;
}
.sig.expanded .detail { max-height: 200px; margin-top: 14px; opacity: 1; }
.sig .more {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--indigo);
  display: inline-flex; align-items: center; gap: 6px;
}
.sig.expanded .more .chev { transform: rotate(180deg); }
.sig .more .chev { transition: transform 220ms ease; }

.sig-1 { grid-column: span 6; }
.sig-2 { grid-column: span 6; }
.sig-3 { grid-column: span 4; }
.sig-4 { grid-column: span 4; }
.sig-5 { grid-column: span 4; }
.sig-6 { grid-column: span 6; }
.sig-7 { grid-column: span 6; }
@media (max-width: 900px) {
  .sig-1, .sig-2, .sig-3, .sig-4, .sig-5, .sig-6, .sig-7 { grid-column: span 12; }
}

/* ---------- outreach (sequence visualization) ---------- */
.outreach { background: var(--bg-soft); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.outreach-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: start; }
@media (max-width: 980px) { .outreach-grid { grid-template-columns: 1fr; } }

.feature-list { display: grid; gap: 4px; }
.feature {
  padding: 22px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
}
.feature:last-child { border-bottom: 1px solid var(--line); }
.feature .ic {
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--bg-card); border: 1px solid var(--line);
  display: grid; place-items: center;
  color: var(--indigo);
  flex-shrink: 0;
}
.feature h4 { font-size: 17px; }
.feature p { margin: 6px 0 0; color: var(--ink-mute); font-size: 14.5px; line-height: 1.55; }

/* sequence mock (echoes app sequence builder) */
.seq-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-card);
}
.seq-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--line-soft); }
.seq-head .title { font-weight: 500; font-size: 14.5px; display: inline-flex; align-items: center; gap: 8px; }
.seq-head .tag { font-family: var(--mono); font-size: 10.5px; padding: 3px 8px; border-radius: 4px; background: var(--indigo-soft); color: var(--indigo); letter-spacing: 0.04em; }
.seq-head .status { font-family: var(--mono); font-size: 11px; color: var(--emerald); display: inline-flex; align-items: center; gap: 6px; }
.seq-head .status .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--emerald); }

.seq-body { padding: 18px 0 4px; position: relative; }
.seq-body::before {
  content: ''; position: absolute; left: 17px; top: 30px; bottom: 30px;
  border-left: 1.5px dashed var(--line); z-index: 0;
}
.seq-step { display: grid; grid-template-columns: 36px 1fr auto; gap: 14px; align-items: center; padding: 10px 0; position: relative; z-index: 1; }
.seq-step .dot {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--bg-card); border: 1.5px solid var(--line);
  display: grid; place-items: center; color: var(--ink-mute);
  font-family: var(--mono); font-size: 11px;
}
.seq-step.active .dot { border-color: var(--indigo); background: var(--indigo-soft); color: var(--indigo); }
.seq-step .lbl { font-size: 14px; font-weight: 500; }
.seq-step .sub { font-size: 12.5px; color: var(--ink-mute); margin-top: 2px; }
.seq-step .when { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); }
.seq-branch {
  margin-top: 4px;
  padding: 10px 12px;
  background: var(--indigo-soft);
  border-radius: 8px;
  font-size: 12.5px; color: var(--indigo-deep);
  display: flex; align-items: center; gap: 8px;
}

/* ---------- personalization (before/after) ---------- */
.pers { background: var(--bg-dark); color: #fff; }
.pers .section-head .lede { color: rgba(255,255,255,0.65); }
.compare {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
@media (max-width: 820px) { .compare { grid-template-columns: 1fr; } }
.msg {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 26px;
  position: relative;
}
.msg.bad { }
.msg.good {
  background: linear-gradient(180deg, rgba(99,102,241,0.10), rgba(99,102,241,0.02));
  border-color: rgba(99,102,241,0.32);
}
.msg .tag {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 4px 9px; border-radius: 999px;
  margin-bottom: 18px;
}
.msg.bad .tag { color: rgba(255,255,255,0.6); background: rgba(255,255,255,0.06); }
.msg.good .tag { color: var(--indigo-2); background: rgba(99,102,241,0.16); border: 1px solid rgba(99,102,241,0.28); }
.msg .from { display: flex; align-items: center; gap: 12px; padding-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,0.08); margin-bottom: 16px; }
.msg .av { width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, #818cf8, #4338ca); display: grid; place-items: center; color: #fff; font-weight: 600; font-size: 13px; }
.msg .from-meta { font-size: 13px; }
.msg .from-meta .nm { color: #fff; font-weight: 500; }
.msg .from-meta .ro { color: rgba(255,255,255,0.5); font-size: 12px; }
.msg .body { font-size: 14.5px; line-height: 1.65; color: rgba(255,255,255,0.85); }
.msg .body p { margin: 0 0 10px; }
.msg.bad .body { color: rgba(255,255,255,0.55); }
.msg .hl { background: rgba(99,102,241,0.22); padding: 1px 5px; border-radius: 3px; color: #c7d2fe; }
.msg-foot { margin-top: 16px; display: flex; gap: 14px; font-size: 12px; color: rgba(255,255,255,0.5); font-family: var(--mono); }
.msg-foot .ok { color: var(--emerald); }
.msg-foot .bad { color: var(--rose); }

/* ---------- intelligence (prospect card mock) ---------- */
.intel-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 56px; align-items: center; }
@media (max-width: 980px) { .intel-grid { grid-template-columns: 1fr; } }

.prospect-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lift);
}
.pc-head { display: flex; align-items: flex-start; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--line-soft); }
.pc-av { width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(135deg, #fbbf24, #ec4899); display: grid; place-items: center; color: #fff; font-weight: 600; font-size: 17px; flex-shrink: 0; }
.pc-name { font-weight: 500; font-size: 17px; letter-spacing: -0.01em; }
.pc-role { color: var(--ink-mute); font-size: 14px; margin-top: 2px; }
.pc-score { margin-left: auto; text-align: right; }
.pc-score .n { font-size: 26px; font-weight: 500; letter-spacing: -0.02em; color: var(--emerald); }
.pc-score .l { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); }
.pc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 24px; padding: 18px 0; }
.pc-grid .row { display: flex; align-items: center; gap: 10px; }
.pc-grid .row .k { font-size: 12px; color: var(--ink-mute); width: 88px; flex-shrink: 0; }
.pc-grid .row .v { font-size: 13px; color: var(--ink); font-weight: 500; }
.pc-grid .row .tag { font-family: var(--mono); font-size: 10.5px; padding: 2px 7px; border-radius: 4px; background: var(--indigo-soft); color: var(--indigo); }
.pc-signal {
  margin-top: 6px;
  padding: 14px 16px;
  background: linear-gradient(180deg, rgba(99,102,241,0.08), rgba(99,102,241,0.02));
  border: 1px solid rgba(99,102,241,0.22);
  border-radius: 10px;
}
.pc-signal .pcs-h { display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--indigo); }
.pc-signal .pcs-t { margin-top: 8px; font-size: 13.5px; line-height: 1.5; color: var(--ink); }
.pc-foot { display: flex; gap: 8px; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line-soft); }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; font-size: 11.5px; color: var(--ink-soft); background: var(--bg-soft); border: 1px solid var(--line); font-family: var(--mono); }
.chip.ok { background: var(--emerald-soft); color: #065f46; border-color: transparent; }

/* ---------- scale stats ---------- */
.scale { background: var(--bg-soft); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 820px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }
.stat-cell {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.stat-cell .n { font-size: 44px; font-weight: 500; letter-spacing: -0.035em; line-height: 1; }
.stat-cell .n .u { color: var(--ink-mute); font-size: 22px; margin-left: 4px; letter-spacing: -0.02em; }
.stat-cell .l { margin-top: 14px; font-size: 14px; color: var(--ink-mute); }
.stat-cell.featured { background: var(--ink); color: #fff; border-color: var(--ink); }
.stat-cell.featured .l { color: rgba(255,255,255,0.65); }
.stat-cell.featured .n .u { color: rgba(255,255,255,0.55); }

/* ---------- proof / testimonials ---------- */
.proof-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
@media (max-width: 900px) { .proof-grid { grid-template-columns: 1fr; } }
.quote {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex; flex-direction: column;
  min-height: 280px;
}
.quote .q { font-size: 17px; line-height: 1.5; letter-spacing: -0.01em; color: var(--ink); }
.quote .q::before { content: '"'; font-family: var(--serif); font-size: 56px; line-height: 0; vertical-align: -16px; color: var(--indigo); margin-right: 4px; }
.quote .a { margin-top: auto; padding-top: 24px; display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--line-soft); }
.quote .av { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-weight: 500; font-size: 14px; }
.quote .meta .n { font-size: 14px; font-weight: 500; }
.quote .meta .r { font-size: 12.5px; color: var(--ink-mute); margin-top: 1px; }

.av-1 { background: linear-gradient(135deg, #fbbf24, #f97316); }
.av-2 { background: linear-gradient(135deg, #34d399, #10b981); }
.av-3 { background: linear-gradient(135deg, #818cf8, #6366f1); }

/* ---------- pricing ---------- */
.trial-banner {
  margin: 0 0 40px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #4338ca 0%, #6366f1 55%, #818cf8 100%);
  color: #fff;
  position: relative; overflow: hidden;
  box-shadow: 0 24px 60px -24px rgba(67,56,202,0.55);
}
.trial-banner::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(800px 320px at 90% -20%, rgba(255,255,255,0.18), transparent 60%),
    radial-gradient(700px 360px at 0% 110%, rgba(67,56,202,0.45), transparent 60%);
  pointer-events: none;
}
.trial-banner-inner {
  position: relative;
  padding: 48px 40px 56px;
  display: flex; flex-direction: column; align-items: center; text-align: center;
  gap: 18px;
}
.trial-banner-logo {
  height: 132px; width: auto; max-width: 100%; display: block;
  /* Light wordmark (aida-sdr-signals-logo-light.png) — the navy "trial" variant
     was dark-on-indigo and barely legible on the banner. This bright variant
     reads cleanly on the indigo gradient. */
  filter: drop-shadow(0 4px 16px rgba(0,0,0,0.32));
  margin-bottom: 4px;
}
@media (max-width: 640px) {
  .trial-banner-logo { height: 88px; }
}
.trial-pill {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.18em;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(255,255,255,0.18); color: #fff;
  border: 1px solid rgba(255,255,255,0.28);
}
.trial-headline {
  font-size: 40px; font-weight: 500; letter-spacing: -0.025em;
  line-height: 1.15; max-width: 22ch;
}
.trial-headline-soft { color: rgba(255,255,255,0.7); font-weight: 400; }
.trial-cta { margin-top: 8px; }
.btn-lg { height: 56px; padding: 0 28px; font-size: 16px; font-weight: 600; }
.trial-fineprint { font-size: 13.5px; color: rgba(255,255,255,0.72); font-family: var(--mono); letter-spacing: 0.02em; }
.price-trial-note { margin-top: 10px; text-align: center; font-size: 13px; color: var(--ink-mute); font-family: var(--mono); letter-spacing: 0.04em; }
.price.featured .price-trial-note { color: rgba(255,255,255,0.6); }
@media (max-width: 640px) {
  .trial-banner-inner { padding: 40px 24px; }
  .trial-headline { font-size: 28px; }
}

.price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 820px) { .price-grid { grid-template-columns: 1fr; } }
.price {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
}
.price.featured {
  background: var(--ink); color: #fff; border-color: var(--ink);
  background-image:
    radial-gradient(700px 400px at 80% -10%, rgba(99,102,241,0.35), transparent 60%),
    radial-gradient(500px 300px at -10% 110%, rgba(67,56,202,0.30), transparent 60%);
}
.price .name { font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-mute); }
.price.featured .name { color: rgba(255,255,255,0.65); }
.price .ribbon { position: absolute; top: 28px; right: 28px; font-family: var(--mono); font-size: 10.5px; padding: 4px 10px; border-radius: 999px; background: rgba(99,102,241,0.25); color: #c7d2fe; letter-spacing: 0.08em; }
.price .tag { margin-top: 6px; font-size: 18px; letter-spacing: -0.01em; max-width: 36ch; }
.price .amt { margin-top: 22px; display: flex; align-items: baseline; gap: 4px; }
.price .amt .n { font-size: 58px; font-weight: 500; letter-spacing: -0.035em; line-height: 1; }
.price .amt .p { font-size: 16px; color: var(--ink-mute); }
.price.featured .amt .p { color: rgba(255,255,255,0.65); }
.price .cta { margin-top: 24px; width: 100%; justify-content: center; }
.price .feats { margin-top: 28px; display: grid; gap: 12px; }
.price .feats li { display: flex; align-items: flex-start; gap: 10px; font-size: 14.5px; list-style: none; line-height: 1.5; }
.price .feats { padding: 0; margin-top: 28px; }
.price .feats .ck {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--emerald-soft); color: #065f46;
  display: grid; place-items: center; flex-shrink: 0; margin-top: 1px;
}
.price.featured .feats .ck { background: rgba(16,185,129,0.22); color: #6ee7b7; }
.price.featured .feats { color: rgba(255,255,255,0.88); }
.price .div { margin: 26px 0 22px; height: 1px; background: var(--line-soft); }
.price.featured .div { background: rgba(255,255,255,0.1); }
.price .feats-head { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-mute); margin-bottom: 4px; }
.price.featured .feats-head { color: rgba(255,255,255,0.55); }

.dfy {
  margin-top: 28px; text-align: center;
  font-size: 14.5px; color: var(--ink-mute);
}
.dfy a { color: var(--ink); border-bottom: 1px solid var(--ink); padding-bottom: 1px; }
.dfy a:hover { color: var(--indigo); border-color: var(--indigo); }

/* ---------- faq ---------- */
.faq-list { display: grid; gap: 0; }
.faq-item { border-top: 1px solid var(--line); padding: 0; }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; text-align: left;
  padding: 26px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  font-size: 19px; font-weight: 500; letter-spacing: -0.015em;
}
.faq-q .plus {
  width: 28px; height: 28px; border-radius: 50%;
  border: 1px solid var(--line);
  display: grid; place-items: center;
  flex-shrink: 0;
  transition: transform 220ms ease, background 220ms ease, color 220ms ease;
  font-size: 18px; color: var(--ink-mute);
}
.faq-item.open .faq-q .plus { transform: rotate(45deg); background: var(--ink); color: #fff; border-color: var(--ink); }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height 320ms ease, padding 280ms ease;
  color: var(--ink-mute); font-size: 15.5px; line-height: 1.65; max-width: 70ch;
}
.faq-item.open .faq-a { max-height: 240px; padding: 0 0 26px; }

/* ---------- CTA + footer ---------- */
.cta-band {
  background: var(--bg-dark); color: #fff;
  border-radius: var(--radius-xl);
  padding: 80px 60px; position: relative; overflow: hidden;
  margin: 80px auto;
  max-width: 1200px;
  background-image:
    radial-gradient(800px 500px at 90% 10%, rgba(99,102,241,0.35), transparent 60%),
    radial-gradient(600px 400px at 10% 110%, rgba(16,185,129,0.18), transparent 60%);
}
.cta-band .grid {
  position: absolute; inset: 0; opacity: 0.5;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.cta-band .inner { position: relative; max-width: 720px; }
.cta-band h2 { letter-spacing: -0.03em; }
.cta-band p { margin-top: 18px; color: rgba(255,255,255,0.7); font-size: 18px; max-width: 56ch; }
.cta-band .ctas { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }

footer.foot {
  padding: 60px 0 50px;
  border-top: 1px solid var(--line);
  font-size: 14px; color: var(--ink-mute);
}
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
@media (max-width: 820px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
.foot-brand { display: flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 600; font-size: 15px; }
.foot-tag { margin-top: 14px; color: var(--ink-mute); max-width: 38ch; }
.foot h5 { font-size: 12px; font-family: var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 14px; font-weight: 500; }
.foot ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; }
.foot a:hover { color: var(--ink); }
.foot-row { display: flex; justify-content: space-between; align-items: center; margin-top: 50px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 13px; color: var(--ink-faint); }

/* ---------- scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- responsive niceties ---------- */
@media (max-width: 640px) {
  .wrap { padding: 0 22px; }
  .section { padding: 80px 0; }
  .hero { padding: 110px 0 70px; }
  .hero-stat { grid-template-columns: 1fr; }
  .hero-stat > div { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .cta-band { padding: 56px 28px; margin: 60px 22px; border-radius: 18px; }
  .nav-links { display: none; }
}

/* ============================================================
   Sub-page styles
   ============================================================ */

/* Page header (smaller, dark hero variant) */
.page-head {
  position: relative;
  background: var(--bg-dark);
  color: #fff;
  overflow: hidden;
  padding: 150px 0 90px;
}
.page-head .hero-bg, .page-head .hero-grid { position: absolute; inset: 0; pointer-events: none; }
.page-head .hero-bg {
  background:
    radial-gradient(700px 400px at 18% 30%, rgba(99,102,241,0.22), transparent 60%),
    radial-gradient(600px 400px at 92% 10%, rgba(67,56,202,0.22), transparent 65%);
}
.page-head .hero-grid {
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}
.page-head .inner { position: relative; z-index: 2; }
.page-head h1 {
  font-size: clamp(36px, 4.6vw, 60px); line-height: 1.05; max-width: 18ch;
}
.page-head h1 .accent { color: var(--indigo-2); font-family: var(--serif); font-style: italic; font-weight: 400; }
.page-head .lede { margin-top: 22px; color: rgba(255,255,255,0.68); max-width: 56ch; font-size: 18px; line-height: 1.55; }
.page-head .crumb {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,255,255,0.55); margin-bottom: 22px;
}
.page-head .crumb a { color: rgba(255,255,255,0.6); }
.page-head .crumb a:hover { color: #fff; }

/* Content cards used across sub-pages */
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.card h3 { font-size: 19px; }
.card p { color: var(--ink-mute); font-size: 14.5px; line-height: 1.6; margin: 8px 0 0; }
.card .ic {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--indigo-soft); color: var(--indigo);
  display: grid; place-items: center;
  margin-bottom: 16px;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } .grid-2 { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* Two-column text block with sticky h2 */
.split { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 60px; align-items: start; }
.split .lhs { position: sticky; top: 100px; }
@media (max-width: 980px) { .split { grid-template-columns: 1fr; gap: 32px; } .split .lhs { position: static; } }

/* Number list (large, editorial) */
.num-list { display: grid; gap: 12px; counter-reset: nl; }
.num-list .item {
  display: grid; grid-template-columns: 56px 1fr; gap: 22px;
  padding: 24px 0; border-top: 1px solid var(--line);
}
.num-list .item:last-child { border-bottom: 1px solid var(--line); }
.num-list .item .n {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em;
  color: var(--indigo); padding-top: 4px;
}
.num-list .item h4 { font-size: 19px; letter-spacing: -0.015em; }
.num-list .item p { margin: 8px 0 0; color: var(--ink-mute); font-size: 15px; line-height: 1.6; }

/* Contact form */
.form-row { display: grid; gap: 6px; margin-bottom: 18px; }
.form-row label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-mute); }
.form-row input, .form-row select, .form-row textarea {
  width: 100%;
  font-family: var(--sans); font-size: 14.5px; color: var(--ink);
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-card);
  outline: none;
  transition: border-color 160ms, box-shadow 160ms;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  border-color: var(--indigo);
  box-shadow: 0 0 0 4px rgba(99,102,241,0.12);
}
.form-row textarea { min-height: 110px; resize: vertical; }
.form-row.two { grid-template-columns: 1fr 1fr; gap: 14px; display: grid; }
@media (max-width: 640px) { .form-row.two { grid-template-columns: 1fr; } }
.form-row.two > div { display: grid; gap: 6px; }

.contact-card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
}
/* Pitch + calendar grids (demo/contact/agencies) collapse on narrow screens —
   the columns are set inline, so this needs !important to win. */
@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr !important; gap: 28px !important; }
}

/* Side rail (resource pages) */
.rail {
  border-left: 1px solid var(--line);
  padding-left: 24px;
}
.rail h5 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-mute); margin: 0 0 12px; font-weight: 500; }
.rail ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.rail a { color: var(--ink-soft); font-size: 14px; }
.rail a:hover { color: var(--indigo); }

/* Article cards (playbooks) */
.article {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex; flex-direction: column;
  transition: border-color 200ms, box-shadow 200ms, transform 200ms;
}
.article:hover { border-color: rgba(99,102,241,0.4); box-shadow: var(--shadow-card); }
.article .tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--indigo); margin-bottom: 14px;
}
.article h3 { font-size: 22px; letter-spacing: -0.02em; }
.article p { color: var(--ink-mute); font-size: 14.5px; margin: 8px 0 0; line-height: 1.55; }
.article .meta {
  margin-top: auto; padding-top: 22px;
  font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint);
  display: flex; gap: 14px;
}

/* Security/agency feature rows */
.row-list { display: grid; gap: 0; }
.row-list .row {
  display: grid; grid-template-columns: 220px 1fr; gap: 32px;
  padding: 26px 0; border-top: 1px solid var(--line);
}
.row-list .row:last-child { border-bottom: 1px solid var(--line); }
.row-list .row h4 { font-size: 17px; }
.row-list .row .lbl { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--indigo); padding-top: 4px; }
.row-list .row p { color: var(--ink-mute); font-size: 14.5px; margin: 8px 0 0; line-height: 1.6; }
@media (max-width: 720px) { .row-list .row { grid-template-columns: 1fr; gap: 6px; } }

/* Team avatars (about) */
.team-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 720px) { .team-row { grid-template-columns: 1fr; } }
.team-card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--bg-card); }
.team-card .av { width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-weight: 500; font-size: 22px; margin-bottom: 18px; }
.team-card h4 { font-size: 17px; }
.team-card .role { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-mute); margin-top: 4px; }
.team-card p { color: var(--ink-mute); font-size: 14px; line-height: 1.55; margin: 14px 0 0; }

/* ============================================================
   Playbook article pages
   ============================================================ */
.pb-meta {
  display: flex; gap: 18px; align-items: center;
  font-family: var(--mono); font-size: 12px;
  color: rgba(255,255,255,0.55);
  margin-top: 28px;
}
.pb-meta .author { display: inline-flex; align-items: center; gap: 8px; }
.pb-meta .author .av {
  width: 26px; height: 26px; border-radius: 50%;
  background: linear-gradient(135deg, #818cf8, #4338ca);
  display: grid; place-items: center;
  color: #fff; font-family: var(--sans); font-size: 11px; font-weight: 500;
}
.pb-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: rgba(255,255,255,0.4); }

.pb-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  background: rgba(99,102,241,0.18);
  border: 1px solid rgba(99,102,241,0.30);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: #c7d2fe;
  margin-bottom: 22px;
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 17px; line-height: 1.7;
  color: var(--ink-soft);
}
.article-body h2 {
  font-size: 30px; letter-spacing: -0.02em;
  margin: 56px 0 18px;
  color: var(--ink);
}
.article-body h3 {
  font-size: 20px; letter-spacing: -0.015em;
  margin: 36px 0 12px;
  color: var(--ink);
}
.article-body p { margin: 0 0 18px; }
.article-body strong { color: var(--ink); font-weight: 500; }
.article-body a { color: var(--indigo); border-bottom: 1px solid rgba(99,102,241,0.4); }
.article-body a:hover { border-color: var(--indigo); }
.article-body ul, .article-body ol { padding-left: 22px; margin: 0 0 22px; }
.article-body li { margin: 0 0 10px; }
.article-body blockquote {
  border-left: 3px solid var(--indigo);
  padding: 4px 0 4px 24px;
  margin: 28px 0;
  font-family: var(--serif); font-style: italic;
  font-size: 22px; line-height: 1.45;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.article-body .stat-block {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
  margin: 32px 0;
}
.article-body .stat-block .cell {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
}
.article-body .stat-block .n {
  font-size: 34px; font-weight: 500; letter-spacing: -0.03em; color: var(--ink); line-height: 1;
}
.article-body .stat-block .l {
  margin-top: 8px; font-size: 13px; color: var(--ink-mute); line-height: 1.45;
}
@media (max-width: 640px) {
  .article-body .stat-block { grid-template-columns: 1fr; }
}

.tldr {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px 26px;
  margin: 0 0 40px;
}
.tldr .lbl {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--indigo); margin-bottom: 8px;
}
.tldr p { margin: 0; font-size: 16px; line-height: 1.55; color: var(--ink); }

.msg-sample {
  background: #0f0f1a;
  color: rgba(255,255,255,0.92);
  border-radius: 14px;
  padding: 26px;
  margin: 28px 0;
  font-size: 14.5px; line-height: 1.65;
  border: 1px solid rgba(255,255,255,0.08);
}
.msg-sample .from {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
}
.msg-sample .from .ai-tag {
  padding: 3px 8px; border-radius: 4px;
  background: rgba(99,102,241,0.2); color: #c7d2fe;
}
.msg-sample .hl {
  background: rgba(99,102,241,0.25);
  padding: 1px 6px; border-radius: 3px;
  color: #e0e7ff;
}
.msg-sample p { margin: 0 0 10px; color: rgba(255,255,255,0.92); }
.msg-sample p:last-child { margin: 0; }

.pb-nav {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin: 60px 0 0;
  max-width: 760px; margin-left: auto; margin-right: auto;
}
.pb-nav a {
  display: block;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-card);
  transition: border-color 200ms, transform 200ms;
}
.pb-nav a:hover { border-color: var(--indigo); transform: translateY(-1px); }
.pb-nav .dir {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-mute);
}
.pb-nav h4 { font-size: 16px; margin-top: 6px; letter-spacing: -0.015em; }
.pb-nav .next { text-align: right; }
@media (max-width: 640px) {
  .pb-nav { grid-template-columns: 1fr; }
}