/* ===== Unseen Partner — base styles ===== */

:root {
  --blue: #2f6fc0;
  --blue-dark: #1e4f92;
  --blue-darker: #163a6c;
  --blue-light: #eaf2fb;
  --blue-light-2: #dbe9f9;
  --ink: #0f1420;
  --ink-soft: #4a5468;
  --gray: #6b7484;
  --line: #e6ebf3;
  --bg: #ffffff;
  --bg-soft: #f6f9fd;
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --shadow: 0 20px 40px -20px rgba(20, 40, 80, 0.18);
  --shadow-sm: 0 8px 20px -10px rgba(20, 40, 80, 0.15);
  --maxw: 1120px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

h1, h2, h3, h4 { line-height: 1.12; margin: 0; font-weight: 700; letter-spacing: -0.02em; }
p { margin: 0; }

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.brand img { width: 30px; height: 30px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-soft);
  transition: color .15s ease;
}
.nav-links a:hover,
.nav-links a.active { color: var(--blue-dark); }

.nav-cta { display: flex; align-items: center; gap: 18px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14.5px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 10px 24px -10px rgba(47,111,192,0.55);
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--blue); color: var(--blue-dark); }
.btn-lg { padding: 15px 28px; font-size: 15.5px; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.menu-toggle span {
  width: 22px; height: 2px; background: var(--ink); border-radius: 2px;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 96px 0 88px;
  overflow: hidden;
}
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(10px);
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
  animation: drift 16s ease-in-out infinite;
}
.hero-blob.b1 {
  width: 620px; height: 620px;
  top: -280px; right: -160px;
  background: radial-gradient(circle at 40% 40%, var(--blue-light-2), transparent 70%);
  animation-delay: 0s;
}
.hero-blob.b2 {
  width: 460px; height: 460px;
  top: 40px; left: -220px;
  background: radial-gradient(circle at 60% 60%, var(--blue-light), transparent 70%);
  animation-delay: -6s;
}
@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(24px, 26px) scale(1.06); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-blob { animation: none; }
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 40px;
  align-items: center;
}
.hero-copy { min-width: 0; }
.hero-visual {
  position: relative;
}
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 420px; margin: 0 auto 8px; }
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--blue-dark);
  background: var(--blue-light);
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(34px, 5.4vw, 60px);
  max-width: 820px;
  margin-bottom: 22px;
}
.hero .lead {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--ink-soft);
  max-width: 600px;
  margin-bottom: 36px;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.hero-note { font-size: 13.5px; color: var(--gray); }

/* ===== Hero chart visual ===== */
.chart-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px 26px 22px;
  box-shadow: var(--shadow);
  transform: rotate(1.2deg);
  animation: float-card 7s ease-in-out infinite;
}
@keyframes float-card {
  0%, 100% { transform: rotate(1.2deg) translateY(0); }
  50% { transform: rotate(1.2deg) translateY(-10px); }
}
@media (prefers-reduced-motion: reduce) {
  .chart-card { animation: none; }
}
.chart-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.chart-card-head .label { font-size: 13px; color: var(--gray); font-weight: 600; }
.chart-card-head .value { font-size: 22px; font-weight: 800; color: var(--ink); }
.chart-card-head .delta {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--blue-light); color: var(--blue-dark);
  font-size: 12.5px; font-weight: 700;
  padding: 4px 10px; border-radius: 999px;
}
.chart-svg-path {
  stroke-dasharray: 500;
  stroke-dashoffset: 500;
  animation: draw-line 1.8s ease-out 0.3s forwards;
}
.chart-svg-fill { opacity: 0; animation: fade-in 1s ease-out 1.2s forwards; }
.chart-dot {
  opacity: 0;
  animation: pop-in 0.5s ease-out forwards;
}
@keyframes draw-line { to { stroke-dashoffset: 0; } }
@keyframes fade-in { to { opacity: 1; } }
@keyframes pop-in { to { opacity: 1; } }
.chart-floaty {
  position: absolute;
  z-index: 2;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  animation: float-card 8s ease-in-out infinite;
}
.chart-floaty.f1 { top: -18px; right: -14px; animation-delay: -2s; }
.chart-floaty.f2 { bottom: -16px; left: -18px; animation-delay: -4s; }
.chart-floaty .dot-live {
  width: 8px; height: 8px; border-radius: 50%; background: #34c77b;
  box-shadow: 0 0 0 0 rgba(52,199,123,0.5);
  animation: pulse-dot 1.8s ease-out infinite;
}
@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(52,199,123,0.5); }
  70% { box-shadow: 0 0 0 8px rgba(52,199,123,0); }
  100% { box-shadow: 0 0 0 0 rgba(52,199,123,0); }
}

/* ===== Scroll reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-stagger.visible .reveal-item {
  opacity: 1;
  transform: translateY(0);
}
.reveal-item {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-stagger.visible .reveal-item:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger.visible .reveal-item:nth-child(2) { transition-delay: 0.14s; }
.reveal-stagger.visible .reveal-item:nth-child(3) { transition-delay: 0.23s; }
.reveal-stagger.visible .reveal-item:nth-child(4) { transition-delay: 0.32s; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-item { opacity: 1; transform: none; transition: none; }
}

/* ===== Dot grid texture ===== */
.dot-grid {
  position: relative;
}
.dot-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(47,111,192,0.16) 1.4px, transparent 1.4px);
  background-size: 22px 22px;
  -webkit-mask-image: radial-gradient(ellipse 70% 100% at 50% 0%, #000 40%, transparent 100%);
  mask-image: radial-gradient(ellipse 70% 100% at 50% 0%, #000 40%, transparent 100%);
  pointer-events: none;
}

.hero-page {
  padding: 72px 0 64px;
}
.hero-page h1 { font-size: clamp(32px, 4.6vw, 48px); max-width: 780px; }
.hero-page .lead { font-size: 17px; color: var(--ink-soft); max-width: 640px; margin-top: 18px; }

/* ===== Sections ===== */
section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 14px; }
.section-head p { color: var(--ink-soft); font-size: 16.5px; }
.kicker {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
}

/* ===== Model / revenue-share callout ===== */
.model-box {
  background: linear-gradient(135deg, var(--blue-darker), var(--blue-dark) 55%, var(--blue));
  border-radius: var(--radius-lg);
  padding: 56px;
  color: #fff;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  position: relative;
  overflow: hidden;
}
.model-box::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url('../images/logo-white.png') no-repeat;
  background-size: 340px;
  background-position: 108% 120%;
  opacity: 0.10;
}
.model-box h3 { font-size: clamp(24px, 2.8vw, 32px); margin-bottom: 16px; }
.model-box p { color: rgba(255,255,255,0.85); font-size: 16px; margin-bottom: 0; }
.model-tag {
  display: inline-block;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.28);
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.model-steps { display: flex; flex-direction: column; gap: 18px; position: relative; z-index: 1; }
.model-step { display: flex; gap: 16px; align-items: flex-start; }
.model-step .num {
  flex: none;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.3);
  display: flex; align-items: center; justify-content: center;
  font-size: 13.5px; font-weight: 700;
}
.model-step .txt { font-size: 15px; color: rgba(255,255,255,0.92); padding-top: 4px; }
.model-step .txt b { color: #fff; }

/* ===== Cards ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-sm); border-color: transparent; }
.card:hover .icon { background: var(--blue); color: #fff; transform: scale(1.08) rotate(-4deg); }
.card .icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--blue-light);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  color: var(--blue-dark);
  font-weight: 800;
  font-size: 17px;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}
.card h3 { font-size: 18.5px; margin-bottom: 10px; }
.card p { color: var(--ink-soft); font-size: 15px; }

.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pillar { padding: 8px 0; }
.pillar .n { font-size: 13px; font-weight: 800; color: var(--blue); letter-spacing: 0.05em; margin-bottom: 10px; }
.pillar h3 { font-size: 19px; margin-bottom: 8px; }
.pillar p { color: var(--ink-soft); font-size: 15px; }

/* ===== FAQ ===== */
.faq { max-width: 760px; }
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 16.5px;
  font-weight: 650;
  color: var(--ink);
}
.faq-q .plus {
  flex: none;
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  color: var(--blue-dark);
  transition: transform .2s ease;
}
.faq-item.open .faq-q .plus { transform: rotate(45deg); background: var(--blue-light); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .25s ease;
}
.faq-a p { padding: 0 0 22px; color: var(--ink-soft); font-size: 15px; max-width: 640px; }

/* ===== CTA banner ===== */
.cta-banner {
  border-radius: var(--radius-lg);
  background:
    radial-gradient(500px 240px at 15% 0%, var(--blue-light-2), transparent 65%),
    radial-gradient(500px 240px at 85% 100%, var(--blue-light-2), transparent 65%),
    var(--blue-light);
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 14px; }
.cta-banner p { color: var(--ink-soft); margin-bottom: 28px; font-size: 16px; }

/* ===== Footer ===== */
footer {
  background: var(--ink);
  color: rgba(255,255,255,0.72);
  padding: 64px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: #fff; margin-bottom: 14px; }
.footer-brand img { width: 26px; height: 26px; }
.footer-tag { font-size: 14.5px; max-width: 300px; color: rgba(255,255,255,0.55); }
.footer-col h4 {
  font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.06em;
  color: rgba(255,255,255,0.45); margin-bottom: 16px; font-weight: 700;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.footer-col a { font-size: 14.5px; color: rgba(255,255,255,0.75); transition: color .15s ease; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  padding-top: 26px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: rgba(255,255,255,0.4);
  flex-wrap: wrap; gap: 10px;
}

/* ===== Contact form ===== */
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.form-field { margin-bottom: 20px; }
.form-field label {
  display: block; font-size: 14px; font-weight: 650; margin-bottom: 8px; color: var(--ink);
}
.form-field input, .form-field textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  font-family: var(--font);
  font-size: 15px;
  background: var(--bg-soft);
  color: var(--ink);
  transition: border-color .15s ease, background .15s ease;
}
.form-field input:focus, .form-field textarea:focus {
  outline: none; border-color: var(--blue); background: #fff;
}
.form-field textarea { min-height: 130px; resize: vertical; }
.contact-side { background: var(--bg-soft); border-radius: var(--radius); padding: 36px; }
.contact-side h3 { font-size: 18px; margin-bottom: 14px; }
.contact-side p { color: var(--ink-soft); font-size: 15px; margin-bottom: 22px; }
.contact-point { display: flex; gap: 12px; margin-bottom: 16px; align-items: flex-start; }
.contact-point .dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--blue); margin-top: 7px; flex: none;
}
.contact-point .t { font-size: 14.5px; color: var(--ink-soft); }
.form-msg { display: none; margin-top: 16px; padding: 14px 16px; border-radius: var(--radius-sm); background: var(--blue-light); color: var(--blue-dark); font-size: 14.5px; font-weight: 600; }
.form-msg.show { display: block; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4, .pillars { grid-template-columns: 1fr; }
  .model-box { grid-template-columns: 1fr; padding: 36px; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .menu-toggle { display: flex; }
  .nav-cta .btn-ghost { display: none; }
}

@media (max-width: 560px) {
  section { padding: 60px 0; }
  .hero { padding: 64px 0 56px; }
  .cta-banner, .model-box { padding: 32px 24px; }
}

/* Mobile nav panel */
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 10px 28px 22px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: 12px 0; font-weight: 600; font-size: 16px; border-bottom: 1px solid var(--line); }
.mobile-nav a:last-child { border-bottom: none; }