/* ============================================================
   TrackingPartner.Agency — original design system
   Warm paper canvas · ink typography · amber signal accent
   Signature motif: the "measurement gap" bar
   ============================================================ */
:root {
  --paper: #faf8f4;
  --paper-2: #f3f0e9;
  --card: #ffffff;
  --ink: #14120f;
  --ink-2: #2e2a24;
  --body-c: #4a463f;
  --muted: #7d776d;
  --line: #e6e1d7;
  --line-2: #d8d2c5;
  --amber: #e39c1f;
  --amber-soft: #fdf0d8;
  --teal: #1f7a68;
  --teal-soft: #e2f0ec;
  --rose: #c0563f;
  --font-head: "Plus Jakarta Sans", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-num: "IBM Plex Mono", monospace;
  --container: 1160px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--body-c);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--ink); color: var(--paper); }

h1, h2, h3, h4 { font-family: var(--font-head); color: var(--ink); line-height: 1.1; letter-spacing: -0.025em; font-weight: 700; }
h1 { font-size: clamp(2.4rem, 5vw, 3.9rem); }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
h3 { font-size: 1.15rem; font-weight: 600; letter-spacing: -0.015em; }
p.lead { font-size: 1.1rem; color: var(--body-c); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 26px; }
section { padding: 100px 0; position: relative; }
.rule { height: 1px; background: var(--line); }

/* Index label — 01 / Services */
.idx {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-num); font-size: 0.78rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 22px;
}
.idx b { color: var(--amber); font-weight: 500; }
.idx::after { content: ""; flex: 1; height: 1px; background: var(--line); max-width: 90px; }

/* Amber underline on a word */
.ul-amber {
  background-image: linear-gradient(var(--amber), var(--amber));
  background-size: 100% 5px; background-position: 0 88%; background-repeat: no-repeat;
  padding: 0 1px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 15px 28px; border-radius: 10px;
  font-family: var(--font-head); font-weight: 600; font-size: 0.97rem;
  border: 1px solid transparent; cursor: pointer; line-height: 1;
  transition: transform 0.16s ease, background 0.16s, box-shadow 0.16s, color 0.16s;
}
.btn-ink { background: var(--ink); color: var(--paper); box-shadow: 0 10px 26px -12px rgba(20,18,15,0.6); }
.btn-ink:hover { transform: translateY(-2px); box-shadow: 0 16px 32px -12px rgba(20,18,15,0.65); }
.btn-amber { background: var(--amber); color: #1c1405; box-shadow: 0 10px 26px -12px rgba(227,156,31,0.7); }
.btn-amber:hover { transform: translateY(-2px); }
.btn-line { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-line:hover { border-color: var(--ink); transform: translateY(-2px); }
.btn-lg { padding: 18px 34px; font-size: 1.02rem; }
.btn-arrow { transition: transform 0.16s; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---------- Header ---------- */
.topbar {
  background: var(--ink); color: #cfc9bd; text-align: center;
  font-size: 0.82rem; padding: 9px 18px; letter-spacing: 0.01em;
}
.topbar b { color: var(--amber); font-weight: 600; }
.head {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250, 248, 244, 0.88);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.head-in {
  max-width: var(--container); margin: 0 auto; padding: 0 26px;
  height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 11px; }
.logo-mark {
  width: 34px; height: 34px; border-radius: 9px; background: var(--ink);
  display: flex; align-items: flex-end; justify-content: center; gap: 2.5px; padding: 7px 6px;
}
.logo-mark i { width: 4px; border-radius: 1px; background: var(--paper); display: block; }
.logo-mark i:nth-child(1) { height: 40%; }
.logo-mark i:nth-child(2) { height: 68%; }
.logo-mark i:nth-child(3) { height: 100%; background: var(--amber); }
.logo b { font-family: var(--font-head); font-weight: 700; font-size: 1rem; color: var(--ink); letter-spacing: -0.02em; }
.logo span { color: var(--muted); font-weight: 500; }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links a { font-size: 0.93rem; font-weight: 500; color: var(--body-c); padding: 4px 0; position: relative; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -1px; height: 2px;
  background: var(--amber); transition: right 0.22s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { right: 0; }
.nav-links a.active { color: var(--ink); font-weight: 600; }
.head-cta { display: flex; align-items: center; gap: 12px; }
.head-cta .btn { padding: 12px 20px; font-size: 0.88rem; }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.burger span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; }
.mnav {
  display: none; position: fixed; top: 70px; left: 0; right: 0; z-index: 99;
  background: var(--paper); border-bottom: 1px solid var(--line); padding: 10px 26px 22px;
}
.mnav.open { display: block; }
.mnav a { display: block; padding: 14px 2px; font-family: var(--font-head); font-weight: 600; color: var(--ink); border-bottom: 1px solid var(--line); }
.mnav a:last-of-type { border-bottom: 0; }
.mnav .btn { width: 100%; margin-top: 14px; }

/* ---------- Hero ---------- */
.hero { padding: 84px 0 76px; }
.hero-grid { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 68px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-num); font-size: 0.76rem; letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--ink-2); background: var(--paper-2); border: 1px solid var(--line);
  border-radius: 7px; padding: 7px 13px; margin-bottom: 26px;
}
.eyebrow .live { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); animation: blip 2s infinite; }
@keyframes blip { 50% { opacity: 0.25; } }
.hero h1 span.sub-line { display: block; color: var(--muted); font-weight: 600; }
.hero .lead { margin-top: 22px; max-width: 500px; }
.hero-actions { display: flex; align-items: center; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero-note { margin-top: 14px; font-size: 0.86rem; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.hero-note b { color: var(--ink); font-weight: 600; }

/* Signature: the measurement gap panel */
.gap-panel {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 26px 26px 22px; box-shadow: 0 30px 60px -40px rgba(20,18,15,0.35);
}
.gap-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 22px; }
.gap-head h4 { font-size: 0.95rem; font-weight: 600; }
.gap-head span { font-family: var(--font-num); font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.gap-row { margin-bottom: 20px; }
.gap-row .gl { display: flex; justify-content: space-between; font-size: 0.83rem; margin-bottom: 8px; }
.gap-row .gl span { color: var(--muted); }
.gap-row .gl b { font-family: var(--font-num); font-weight: 500; color: var(--ink); }
.bar { height: 12px; border-radius: 3px; background: var(--paper-2); overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 3px; width: 0; transition: width 1.3s cubic-bezier(.22,1,.36,1); }
.bar.b-dim i { background: var(--line-2); }
.bar.b-amber i { background: var(--amber); }
.bar.b-teal i { background: var(--teal); }
.gap-callout {
  margin-top: 24px; padding-top: 18px; border-top: 1px dashed var(--line-2);
  display: flex; align-items: center; gap: 14px;
}
.gap-callout .big { font-family: var(--font-head); font-size: 2rem; font-weight: 700; color: var(--ink); line-height: 1; }
.gap-callout p { font-size: 0.86rem; color: var(--muted); }

/* ---------- Logo band ---------- */
.band { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper-2); padding: 26px 0; }
.band-in { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; justify-content: center; }
.band-in .bl { font-family: var(--font-num); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.band-in .plat { font-family: var(--font-head); font-weight: 600; font-size: 0.94rem; color: #928b7f; transition: color 0.2s; }
.band-in .plat:hover { color: var(--ink); }

/* ---------- Stat trio ---------- */
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--line); border-radius: 16px; background: var(--card); overflow: hidden; }
.stat-cell { padding: 34px 30px; border-right: 1px solid var(--line); }
.stat-cell:last-child { border-right: 0; }
.stat-cell .n { font-family: var(--font-head); font-size: clamp(2rem, 3.6vw, 2.7rem); font-weight: 700; color: var(--ink); line-height: 1; }
.stat-cell .n em { font-style: normal; color: var(--amber); }
.stat-cell p { margin-top: 10px; font-size: 0.92rem; color: var(--muted); }

/* ---------- Service rows (editorial list, not card grid) ---------- */
.srv-list { border-top: 1px solid var(--line); }
.srv {
  display: grid; grid-template-columns: 60px 1fr 1.15fr; gap: 30px; align-items: start;
  padding: 32px 6px; border-bottom: 1px solid var(--line);
  transition: background 0.2s, padding-left 0.2s;
}
.srv:hover { background: var(--card); padding-left: 16px; }
.srv .num { font-family: var(--font-num); font-size: 0.82rem; color: var(--amber); padding-top: 5px; }
.srv h3 { font-size: 1.28rem; }
.srv .tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.tag {
  font-family: var(--font-num); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em;
  border: 1px solid var(--line-2); border-radius: 5px; padding: 3px 8px; color: var(--muted);
}
.srv p { font-size: 0.97rem; }

/* ---------- Dark section ---------- */
.ink-section { background: var(--ink); color: #b9b2a5; }
.ink-section h2, .ink-section h3 { color: #fff; }
.ink-section .idx { color: #8a8377; }
.ink-section .idx::after { background: rgba(255,255,255,0.14); }
.ink-section .rule { background: rgba(255,255,255,0.12); }

/* ---------- Timeline process ---------- */
.flow { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; margin-top: 12px; }
.flow::before { content: ""; position: absolute; left: 0; right: 0; top: 19px; height: 1px; background: rgba(255,255,255,0.14); }
.flow-step { position: relative; }
.flow-dot {
  width: 38px; height: 38px; border-radius: 50%; background: var(--ink);
  border: 1px solid rgba(255,255,255,0.2); display: grid; place-items: center;
  font-family: var(--font-num); font-size: 0.8rem; color: var(--amber); position: relative; z-index: 2;
}
.flow-step h3 { margin: 18px 0 8px; font-size: 1.05rem; }
.flow-step p { font-size: 0.9rem; color: #9d968a; }
.flow-step .when { font-family: var(--font-num); font-size: 0.72rem; color: var(--amber); text-transform: uppercase; letter-spacing: 0.07em; margin-top: 10px; display: block; }

/* ---------- Two-col split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split-copy p { margin-top: 16px; }
.ticks { list-style: none; margin-top: 24px; display: grid; gap: 14px; }
.ticks li { display: flex; gap: 13px; align-items: flex-start; font-size: 0.99rem; color: var(--body-c); }
.ticks li b { color: var(--ink); font-weight: 600; }
.ticks li::before {
  content: "→"; flex-shrink: 0; color: var(--amber); font-weight: 700; margin-top: 1px;
}
.ink-section .ticks li { color: #b9b2a5; }
.ink-section .ticks li b { color: #fff; }

/* ---------- Panel card (generic) ---------- */
.panel {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 30px 28px;
  box-shadow: 0 24px 50px -40px rgba(20,18,15,0.3);
}
.ink-section .panel { background: #1c1915; border-color: rgba(255,255,255,0.1); box-shadow: none; }

/* ---------- Before / after ---------- */
.ba { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.ba-col { border: 1px solid var(--line); border-radius: 14px; padding: 24px 22px; background: var(--card); }
.ba-col.good { border-color: rgba(31,122,104,0.35); background: var(--teal-soft); }
.ba-col h4 { font-family: var(--font-num); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 16px; }
.ba-col.good h4 { color: var(--teal); }
.ba-col ul { list-style: none; display: grid; gap: 11px; }
.ba-col li { font-size: 0.93rem; display: flex; gap: 10px; }
.ba-col li::before { content: "✕"; color: var(--rose); font-size: 0.85rem; flex-shrink: 0; }
.ba-col.good li::before { content: "✓"; color: var(--teal); }

/* ---------- Reviews ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.rev {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 26px 24px;
  display: flex; flex-direction: column; gap: 15px; transition: border-color 0.2s, transform 0.2s;
}
.rev:hover { border-color: var(--line-2); transform: translateY(-3px); }
.rev .stars { color: var(--amber); font-size: 0.82rem; letter-spacing: 2px; }
.rev blockquote { font-size: 0.96rem; color: var(--ink-2); line-height: 1.7; flex: 1; }
.rev-by { display: flex; align-items: center; gap: 11px; padding-top: 14px; border-top: 1px solid var(--line); }
.rev-by .av {
  width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  font-family: var(--font-num); font-size: 0.74rem; font-weight: 500; color: #fff; flex-shrink: 0;
}
.rev-by strong { display: block; font-size: 0.9rem; color: var(--ink); font-weight: 600; }
.rev-by span { font-size: 0.79rem; color: var(--muted); }
.chip-mini {
  font-family: var(--font-num); font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.06em;
  background: var(--amber-soft); color: #96660c; border-radius: 5px; padding: 3px 8px; align-self: flex-start;
}

/* ---------- Video ---------- */
.vid { background: var(--card); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.vid-frame { aspect-ratio: 16/9; background: var(--ink); position: relative; }
.vid-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
.vid-ph { position: absolute; inset: 0; display: flex; flex-direction: column; gap: 12px; align-items: center; justify-content: center; color: #8a8377; font-family: var(--font-num); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; }
.vid-ph .pl { width: 52px; height: 52px; border-radius: 50%; background: var(--amber); color: #1c1405; display: grid; place-items: center; font-size: 1rem; }
.vid .meta { padding: 16px 20px; border-top: 1px solid var(--line); }
.vid .meta strong { display: block; font-family: var(--font-head); font-size: 0.94rem; color: var(--ink); }
.vid .meta span { font-size: 0.8rem; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 22px 4px;
  font-family: var(--font-head); font-weight: 600; font-size: 1.03rem; color: var(--ink);
  display: flex; justify-content: space-between; align-items: center; gap: 18px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--amber); font-size: 1.35rem; font-weight: 400; transition: transform 0.2s; flex-shrink: 0; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .a { padding: 0 4px 24px; color: var(--body-c); font-size: 0.96rem; max-width: 760px; }

/* ---------- Comparison table ---------- */
.tbl-wrap { border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--card); }
.tbl { width: 100%; border-collapse: collapse; }
.tbl th, .tbl td { padding: 16px 20px; text-align: left; font-size: 0.93rem; border-bottom: 1px solid var(--line); }
.tbl th { font-family: var(--font-head); font-size: 0.88rem; color: var(--ink); background: var(--paper-2); font-weight: 600; }
.tbl th:last-child { background: var(--ink); color: var(--amber); }
.tbl td:first-child { color: var(--muted); }
.tbl .y { color: var(--ink); font-weight: 600; }
.tbl .n { color: #a39c90; }
.tbl tr:last-child td { border-bottom: 0; }

/* ---------- CTA block ---------- */
.cta-block {
  background: var(--ink); border-radius: 20px; padding: 66px 46px; color: #b9b2a5;
  position: relative; overflow: hidden;
}
.cta-block::after {
  content: ""; position: absolute; right: -60px; bottom: -80px; width: 300px; height: 300px;
  border-radius: 50%; background: radial-gradient(circle, rgba(227,156,31,0.16), transparent 65%);
}
.cta-block h2 { color: #fff; max-width: 620px; }
.cta-block p { margin-top: 16px; max-width: 520px; color: #9d968a; }
.cta-actions { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; position: relative; z-index: 2; }
.cta-block .mini { margin-top: 18px; font-size: 0.84rem; color: #8a8377; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: start; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { margin-bottom: 15px; }
.field label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border-radius: 9px;
  background: var(--paper); border: 1px solid var(--line-2);
  font-family: var(--font-body); font-size: 0.94rem; color: var(--ink);
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--amber); background: #fff; box-shadow: 0 0 0 3px var(--amber-soft);
}
.field textarea { resize: vertical; min-height: 108px; }
.cal-frame { border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--card); min-height: 640px; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line); padding: 60px 0 36px; background: var(--paper-2); }
.foot-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.1fr; gap: 42px; margin-bottom: 44px; }
.foot-grid p { color: var(--muted); font-size: 0.9rem; margin-top: 14px; max-width: 290px; }
.foot-grid h4 { font-family: var(--font-num); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.11em; color: var(--muted); margin-bottom: 16px; }
.foot-grid ul { list-style: none; display: grid; gap: 11px; }
.foot-grid ul a { color: var(--body-c); font-size: 0.92rem; }
.foot-grid ul a:hover { color: var(--ink); }
.foot-bot { border-top: 1px solid var(--line); padding-top: 24px; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; color: var(--muted); font-size: 0.83rem; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.09s; }
.reveal-d2 { transition-delay: 0.18s; }
.reveal-d3 { transition-delay: 0.27s; }

/* ---------- Inner page hero ---------- */
.page-hero { padding: 76px 0 60px; }
.page-hero .lead { max-width: 620px; margin-top: 20px; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .hero-grid, .split, .contact-grid, .ba { grid-template-columns: 1fr; gap: 44px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .flow::before { display: none; }
  .stat-row { grid-template-columns: 1fr; }
  .stat-cell { border-right: 0; border-bottom: 1px solid var(--line); }
  .stat-cell:last-child { border-bottom: 0; }
  .srv { grid-template-columns: 40px 1fr; }
  .srv .srv-desc { grid-column: 2; }
  .nav-links { display: none; }
  .burger { display: flex; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  section { padding: 68px 0; }
  .hero { padding: 56px 0 60px; }
  .grid-2, .grid-3, .flow { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .cta-block { padding: 46px 26px; }
  .head-cta .btn-line { display: none; }
  body { font-size: 15.8px; }
}