/* =========================================================
   NEXUS | style.css
   Light, clean look built around the idea of connection
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --bg: #f4f6fb;
  --bg-alt: #e9edf7;
  --surface: #ffffff;
  --ink: #172033;
  --ink-soft: #4a5570;
  --line: #dde3f0;
  --accent: #2b4eff;
  --accent-dark: #1d36c4;
  --highlight: #ffb020;

  --font-head: "Sora", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Source Serif 4", Georgia, "Times New Roman", serif;

  --radius: 10px;
  --header-h: 64px;
  --container: 1100px;
  --narrow: 760px;
}

/* ---------- Reset and base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  line-height: 1.2;
  margin: 0 0 0.6em;
  color: var(--ink);
}

h1 { font-size: clamp(2.8rem, 8vw, 5.5rem); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; margin-bottom: 0.35em; }

p { margin: 0 0 1em; max-width: 68ch; }

a {
  color: var(--accent);
  text-underline-offset: 3px;
}
a:hover { color: var(--accent-dark); }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

ul, ol { padding: 0; margin: 0; list-style: none; }

.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}
.container.narrow { width: min(100% - 2.5rem, var(--narrow)); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 1rem;
  z-index: 200;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  border: 2px solid var(--accent);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; }
.btn-secondary { background: transparent; color: var(--accent); }
.btn-secondary:hover { background: var(--accent); color: #fff; }

/* ---------- Header and navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: max(1.25rem, calc((100% - var(--container)) / 2));
  background: rgba(244, 246, 251, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.logo {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.08em;
  color: var(--ink);
  text-decoration: none;
}

.site-nav ul {
  display: flex;
  gap: 1.75rem;
}
.site-nav a {
  font-family: var(--font-head);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.9rem;
  background: transparent;
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  cursor: pointer;
}

/* ---------- Sections ---------- */
.section {
  padding-block: clamp(3.5rem, 8vw, 6rem);
}
.section-alt { background: var(--bg-alt); }

.section-intro {
  font-size: 1.2rem;
  color: var(--ink-soft);
  margin-bottom: 2rem;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4rem, 12vw, 9rem) clamp(3rem, 8vw, 6rem);
}

/* Network of connected dots, fades in once on load */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 600 400' preserveAspectRatio='xMaxYMid slice'%3E%3Cg stroke='%232b4eff' stroke-width='1.5' fill='none' opacity='0.35'%3E%3Cpath d='M330 60 L450 130 L400 250 L540 300 M450 130 L560 70 M400 250 L300 330 M330 60 L260 160 L400 250'/%3E%3C/g%3E%3Cg fill='%232b4eff'%3E%3Ccircle cx='330' cy='60' r='6'/%3E%3Ccircle cx='450' cy='130' r='8'/%3E%3Ccircle cx='400' cy='250' r='7'/%3E%3Ccircle cx='540' cy='300' r='5'/%3E%3Ccircle cx='560' cy='70' r='5'/%3E%3Ccircle cx='300' cy='330' r='5'/%3E%3Ccircle cx='260' cy='160' r='5'/%3E%3C/g%3E%3Ccircle cx='450' cy='130' r='8' fill='%23ffb020'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right center;
  background-size: cover;
  pointer-events: none;
  animation: network-in 1.4s ease-out both;
}

@keyframes network-in {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: none; }
}

.hero .container { position: relative; }

.hero-kicker {
  font-family: var(--font-head);
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin-bottom: 1rem;
}

.hero-lead {
  font-size: clamp(1.2rem, 2.5vw, 1.45rem);
  color: var(--ink-soft);
  max-width: 34ch;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 3.5rem;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 3rem;
  margin: 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  max-width: 560px;
}
.hero-stats dt {
  font-family: var(--font-head);
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.hero-stats dd {
  margin: 0;
  font-family: var(--font-head);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
}

/* ---------- Mission ---------- */
.statement {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  max-width: none;
  margin-bottom: 1.5rem;
}

.values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem 2rem;
  margin-top: 2.5rem;
}
.values li {
  border-top: 3px solid var(--accent);
  padding-top: 1rem;
}
.values p { font-size: 1rem; color: var(--ink-soft); margin: 0; }

/* ---------- Problem and reflection ---------- */
.problem-statement,
.closing-quote {
  margin: 0 0 2.5rem;
  padding: 0.2rem 0 0.2rem 1.5rem;
  border-left: 4px solid var(--accent);
  font-family: var(--font-head);
  font-size: clamp(1.25rem, 2.6vw, 1.6rem);
  font-weight: 600;
  line-height: 1.45;
}
.closing-quote {
  margin: 3rem 0 0;
  border-left-color: var(--highlight);
}

.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem 3rem;
}
.two-col p { font-size: 1.05rem; color: var(--ink-soft); }

/* ---------- Solution ---------- */
.solution-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}
@media (min-width: 860px) {
  .solution-grid { grid-template-columns: 1fr 1fr; gap: 3.5rem; }
}

.solution-media img,
.challenge-hero-photo img,
.gallery img {
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--line);
}
.solution-media img { aspect-ratio: 4 / 3; }

figure { margin: 0; }
figcaption {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-top: 0.5rem;
  font-style: italic;
}

.steps {
  counter-reset: step;
  margin-bottom: 1.5rem;
}
.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 2.6rem;
  margin-bottom: 0.8rem;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.15em;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  display: grid;
  place-items: center;
}

/* ---------- Journey timeline ---------- */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}
/* the vertical line */
.timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--accent);
  opacity: 0.35;
}

.challenge {
  position: relative;
  margin-bottom: 3rem;
}
.challenge:last-child { margin-bottom: 0; }

/* the node on the line */
.challenge::before {
  content: "";
  position: absolute;
  left: calc(-2.5rem + 1px);
  top: 0.45rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: 4px solid var(--accent);
}
.challenge-current::before {
  border-color: var(--highlight);
  background: var(--highlight);
}

.challenge-meta {
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.3rem;
}
.challenge-current .challenge-meta { color: #a86b00; }

.challenge-head h3 {
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  font-weight: 800;
  margin-bottom: 0.4rem;
}
.challenge-summary {
  color: var(--ink-soft);
  margin-bottom: 0.8rem;
}

.challenge-hero-photo { margin-bottom: 2rem; }
.challenge-hero-photo img { aspect-ratio: 16 / 9; }

.challenge-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem 2rem;
  margin-bottom: 2rem;
}
.challenge-details p,
.challenge-details li { font-size: 1rem; color: var(--ink-soft); }
.challenge-details h4 { color: var(--ink); }
.challenge-details .steps li { padding-left: 2.4rem; }

.roles li { margin-bottom: 0.4rem; }
.roles strong { color: var(--ink); }

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.gallery img { aspect-ratio: 4 / 3; }

.challenge-links { margin: 0; font-family: var(--font-head); font-size: 0.95rem; font-weight: 600; }

/* ---------- Team ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 2.5rem 2rem;
}
.member img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--line);
  margin-bottom: 1rem;
}
.member h3 { margin-bottom: 0.1em; }
.member-role {
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.member p:last-child { font-size: 1rem; color: var(--ink-soft); margin: 0; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: #c9d1e6;
  padding-block: 2rem;
  font-size: 1rem;
}
.site-footer strong { color: #fff; letter-spacing: 0.08em; }
.site-footer a { color: #fff; }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
}
.footer-inner p { margin: 0; }

/* ---------- Mobile ---------- */
@media (max-width: 760px) {
  body { font-size: 1.05rem; }

  .nav-toggle { display: inline-block; }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 1.25rem 1.25rem;
    display: none;
  }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav a {
    display: block;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--line);
  }

  .hero::before { opacity: 0.4; }
  .timeline { padding-left: 2rem; }
  .challenge::before { left: calc(-2rem + 1px); }
}

/* ---------- Print: show everything ---------- */
@media print {
  .site-header, .nav-toggle, .hero::before { display: none; }
}

/* ---------- Respect reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}


/* =========================================================
   INTERACTION AND ANIMATION LAYER
   ========================================================= */

/* ---------- Scroll progress bar ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 150;
  background: linear-gradient(90deg, var(--accent), var(--highlight));
  transform: scaleX(0);
  transform-origin: left;
  pointer-events: none;
}

/* ---------- Header gains a soft shadow after scrolling ---------- */
.site-header { transition: box-shadow 0.3s; }
.site-header.scrolled { box-shadow: 0 6px 20px rgba(23, 32, 51, 0.08); }

/* ---------- Buttons lift on hover ---------- */
.btn {
  transition: background 0.2s, color 0.2s, border-color 0.2s,
              transform 0.2s, box-shadow 0.2s;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(43, 78, 255, 0.22);
}
.btn:active { transform: none; box-shadow: none; }

/* ---------- Hero: one orchestrated entrance ---------- */
.hero .container > * {
  animation: rise 0.8s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
.hero .container > :nth-child(1) { animation-delay: 0.05s; }
.hero .container > :nth-child(2) { animation-delay: 0.15s; }
.hero .container > :nth-child(3) { animation-delay: 0.3s; }
.hero .container > :nth-child(4) { animation-delay: 0.45s; }
.hero .container > :nth-child(5) { animation-delay: 0.6s; }

@keyframes rise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}

/* Network drifts gently with the mouse (set by script.js) */
.hero::before {
  translate: calc(var(--mx, 0) * -16px) calc(var(--my, 0) * -10px);
  transition: translate 0.4s ease-out;
}

/* ---------- Reveal on scroll (script.js adds .js and .reveal) ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
  transition-delay: var(--d, 0s);
}
.js .reveal.in-view {
  opacity: 1;
  transform: none;
}

/* ---------- Small hover details ---------- */
.values li {
  transition: border-color 0.25s, transform 0.25s;
}
.values li:hover {
  border-top-color: var(--highlight);
  transform: translateY(-3px);
}

.member img {
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.35s;
}
.member:hover img {
  transform: translateY(-6px);
  box-shadow: 0 14px 26px rgba(23, 32, 51, 0.15);
}

/* ---------- Timeline fills as you scroll ---------- */
.timeline::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  width: 2px;
  height: calc((100% - 16px) * var(--progress, 0));
  background: var(--accent);
}

.challenge::before {
  transition: background 0.3s, transform 0.3s, border-color 0.3s;
  z-index: 1;
}
.challenge.reached::before {
  background: var(--accent);
  transform: scale(1.15);
}
.challenge-current.reached::before {
  background: var(--highlight);
  border-color: var(--highlight);
}

/* ---------- Clickable photos ---------- */
.img-wrap {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius);
  cursor: zoom-in;
}
.img-wrap img {
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.img-wrap:hover img,
.img-wrap:focus-visible img { transform: scale(1.05); }

.img-wrap::after {
  content: "View larger";
  position: absolute;
  right: 0.6rem;
  bottom: 0.6rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: rgba(23, 32, 51, 0.85);
  color: #fff;
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.25s, transform 0.25s;
  pointer-events: none;
}
.img-wrap:hover::after,
.img-wrap:focus-visible::after { opacity: 1; transform: none; }

/* ---------- Photo viewer (lightbox) ---------- */
.lightbox {
  border: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  background: rgba(14, 20, 36, 0.94);
  color: #fff;
}
.lightbox[open] {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fade-in 0.25s ease-out;
}
.lightbox::backdrop { background: rgba(14, 20, 36, 0.7); }

.lightbox figure {
  max-width: min(92vw, 1100px);
  text-align: center;
}
.lightbox img {
  max-height: 74vh;
  width: auto;
  margin-inline: auto;
  border-radius: var(--radius);
  animation: pop 0.3s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.lightbox figcaption {
  margin: 0.9rem auto 0;
  max-width: 60ch;
  font-style: normal;
  color: #dfe5f5;
}
.lightbox-count {
  margin: 0.4rem 0 0;
  font-family: var(--font-head);
  font-size: 0.85rem;
  color: #9aa6c4;
}

.lightbox-close,
.lightbox-nav {
  position: absolute;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s;
}
.lightbox-close:hover,
.lightbox-nav:hover { background: var(--accent); }
.lightbox-close { top: 1rem; right: 1rem; }
.lightbox-nav { top: 50%; margin-top: -24px; }
.lightbox-nav.prev { left: 1rem; }
.lightbox-nav.next { right: 1rem; }
.lightbox-nav[hidden] { display: none; }

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: none; }
}

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 120;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(43, 78, 255, 0.3);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s, background 0.2s;
}
.to-top.visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.to-top:hover { background: var(--accent-dark); }

@media (max-width: 760px) {
  .lightbox-nav.prev { left: 0.4rem; }
  .lightbox-nav.next { right: 0.4rem; }
}

@media print {
  .scroll-progress, .to-top, .lightbox { display: none; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ---------- Content additions: key facts and USP tags ---------- */
.key-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem 2.5rem;
  margin: 0 0 3rem;
  padding: 1.5rem 0;
  border-block: 1px solid var(--line);
}
.key-facts dd {
  margin: 0 0 0.3rem;
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--accent);
}
.key-facts dt {
  order: 2;
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--ink-soft);
}
.key-facts > div { display: flex; flex-direction: column; }

.usp {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.75rem;
}
.usp li {
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.35rem 0.95rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--accent);
}

.solution-text .steps li strong { color: var(--ink); }
.solution-text h3:not(:first-child) { margin-top: 1.75rem; }
.closing-quote { max-width: var(--narrow); }

/* ---------- Challenge videos ---------- */
.video {
  position: relative;
  max-width: 760px;
  aspect-ratio: 16 / 9;
  margin-top: 1.25rem;
  border-radius: var(--radius);
  overflow: hidden;
  background: #0e1424;
  box-shadow: 0 12px 28px rgba(23, 32, 51, 0.14);
}
.video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.video-link {
  margin: 0.6rem 0 0;
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
}
.challenge-summary { font-size: 1.1rem; margin-bottom: 0; }
/* ---------- Prototype ---------- */
.prototype-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}
@media (min-width: 860px) {
  .prototype-grid { grid-template-columns: 2fr 3fr; gap: 3.5rem; }
}
.prototype-visual {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
}
.prototype-visual svg { display: block; width: 100%; max-width: 300px; margin-inline: auto; }
.prototype-grid h3:not(:first-child) { margin-top: 1.75rem; }

/* ---------- Challenge 6 site preview ---------- */
.site-preview { max-width: 760px; margin-top: 1.25rem; }
.site-preview-bar {
  display: flex;
  gap: 6px;
  padding: 0.7rem 0.9rem;
  background: var(--ink);
  border-radius: var(--radius) var(--radius) 0 0;
}
.site-preview-bar span { width: 10px; height: 10px; border-radius: 50%; background: #4a5570; }
.site-preview-bar span:first-child { background: var(--highlight); }
.site-preview-body {
  padding: clamp(1.5rem, 5vw, 3rem);
  background: var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 600 400'%3E%3Cg stroke='%232b4eff' stroke-width='1.5' fill='none' opacity='0.35'%3E%3Cpath d='M330 60 L450 130 L400 250 L540 300 M450 130 L560 70 M330 60 L260 160 L400 250'/%3E%3C/g%3E%3Cg fill='%232b4eff'%3E%3Ccircle cx='330' cy='60' r='6'/%3E%3Ccircle cx='400' cy='250' r='7'/%3E%3Ccircle cx='540' cy='300' r='5'/%3E%3Ccircle cx='560' cy='70' r='5'/%3E%3Ccircle cx='260' cy='160' r='5'/%3E%3C/g%3E%3Ccircle cx='450' cy='130' r='8' fill='%23ffb020'/%3E%3C/svg%3E") right center / cover no-repeat;
  border: 1px solid var(--line);
  border-top: 0;
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: 0 12px 28px rgba(23, 32, 51, 0.14);
}
.site-preview-body p { margin: 0; }
.site-preview-kicker { font-family: var(--font-head); font-size: 0.75rem; color: var(--ink-soft); }
.site-preview-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 6vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0.3rem 0 0.8rem !important;
}
.site-preview-sections { font-family: var(--font-head); font-size: 0.8rem; font-weight: 600; color: var(--accent); }

.test-list { margin-bottom: 1rem; }
.test-list li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.6rem;
  color: var(--ink-soft);
}
.test-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--highlight);
}
.test-list strong { color: var(--ink); }

/* ---------- Solution: centred difference and impact ---------- */
.solution-more {
  max-width: var(--narrow);
  margin: 3.5rem auto 0;
  text-align: center;
}
.solution-more h3:not(:first-child) { margin-top: 2.25rem; }
.solution-more p { margin-inline: auto; }
.solution-more .usp { justify-content: center; }
#solution .closing-quote { margin-inline: auto; }