:root {
  --foam: #f3fbfa;
  --card: #ffffff;
  --ink: #12333a;
  --teal: #0f7a74;
  --teal-deep: #0b524e;
  --coral: #e07a5f;
  --mist: #d7eeeb;
  --mute: #4d6a70;
  --sans: "Outfit", system-ui, sans-serif;
  --serif: "Source Serif 4", Georgia, serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--foam);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: var(--teal-deep); }
a:hover { color: var(--teal); }

.skip {
  position: absolute;
  left: -999px;
  background: var(--teal);
  color: #fff;
  padding: 0.5rem 0.8rem;
}
.skip:focus { left: 1rem; top: 1rem; z-index: 30; }

.top-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  justify-content: space-between;
  padding: 0.45rem 1.2rem;
  background: var(--teal-deep);
  color: #e7f6f4;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}
.top-strip a { color: #fff; overflow-wrap: anywhere; }

.site-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.2rem;
  background: rgba(243, 251, 250, 0.92);
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--mist);
  backdrop-filter: blur(12px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
  min-width: 0;
}
.brand > span:last-child { min-width: 0; overflow: hidden; }
.lens-mark {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 3px solid var(--teal);
  box-shadow: inset 0 0 0 6px var(--mist), 0 0 0 3px rgba(15, 122, 116, 0.2);
  background: radial-gradient(circle at 35% 35%, #fff, var(--teal));
  flex-shrink: 0;
}
.brand strong { display: block; font-size: 0.95rem; letter-spacing: 0.04em; }
.brand small {
  display: block;
  color: var(--mute);
  font-size: 0.72rem;
  font-weight: 400;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.desk-nav { display: none; gap: 0.9rem; margin-left: auto; }
.desk-nav a { text-decoration: none; color: var(--mute); font-size: 0.88rem; font-weight: 500; }
.desk-nav a:hover { color: var(--teal); }
.burger {
  margin-left: auto;
  width: 42px;
  height: 42px;
  border: 1px solid var(--teal);
  background: #fff;
  border-radius: 50%;
  cursor: pointer;
  flex-shrink: 0;
}
.burger span, .burger span::before, .burger span::after {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--teal-deep);
  position: relative;
  margin: 0 auto;
}
.burger span::before, .burger span::after {
  content: "";
  position: absolute;
  left: 0;
}
.burger span::before { top: -5px; }
.burger span::after { top: 5px; }

.panel {
  display: grid;
  padding: 0.6rem 1.2rem 1rem;
  background: #fff;
  border-bottom: 1px solid var(--mist);
}
.panel[hidden] { display: none !important; }
.panel a { padding: 0.45rem 0; text-decoration: none; color: var(--ink); border-bottom: 1px solid var(--mist); }

.hero {
  display: grid;
  gap: 2rem;
  padding: 2.4rem 1.2rem 3rem;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  color: var(--teal);
  font-weight: 600;
  margin: 0 0 0.6rem;
}
h1, h2, h3 { line-height: 1.15; }
h1 {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 6vw, 3.6rem);
  margin: 0 0 1rem;
  max-width: 16ch;
}
.lead { color: var(--mute); max-width: 58ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin: 1.3rem 0; }
.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
}
.pill.primary { background: var(--teal); color: #fff; }
.pill.primary:hover { background: var(--teal-deep); color: #fff; }
.pill.ghost { background: #fff; color: var(--teal-deep); border-color: var(--mist); }
.mail-hero { font-size: 0.95rem; color: var(--mute); }

.hero-optic { position: relative; min-height: 340px; display: grid; place-items: center; }
.rings i {
  position: absolute;
  border: 1px solid rgba(15, 122, 116, 0.25);
  border-radius: 50%;
  inset: 8%;
  animation: pulse 8s ease-in-out infinite;
}
.rings i:nth-child(2) { inset: 16%; animation-delay: 0.4s; }
.rings i:nth-child(3) { inset: 24%; animation-delay: 0.8s; }
.rings i:nth-child(4) { inset: 32%; animation-delay: 1.2s; }
@keyframes pulse {
  50% { transform: scale(1.04); opacity: 0.55; }
}
.iris {
  width: min(72vw, 340px);
  height: min(72vw, 340px);
  border-radius: 50%;
  overflow: hidden;
  border: 10px solid #fff;
  box-shadow: 0 18px 50px rgba(18, 51, 58, 0.18);
  position: relative;
  z-index: 1;
}
.iris img { width: 100%; height: 100%; object-fit: cover; }
.focus-label {
  margin-top: 1rem;
  display: grid;
  gap: 0.35rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mute);
  position: relative;
  z-index: 1;
  width: min(72vw, 340px);
}
input[type="range"] { width: 100%; accent-color: var(--teal); }
.optic-note { font-size: 0.8rem; color: var(--mute); }

section { padding: 3.4rem 1.2rem; }
h2 { font-family: var(--serif); font-size: clamp(1.7rem, 4vw, 2.5rem); margin: 0 0 0.8rem; max-width: 22ch; }

.chips-band { background: #fff; }
.filters { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 1.2rem 0 1.5rem; }
.filters button {
  border: 1px solid var(--mist);
  background: var(--foam);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  font-family: inherit;
}
.filters button.is-on { background: var(--teal); color: #fff; border-color: var(--teal); }
.cards { display: grid; gap: 1rem; }
.cards article {
  background: var(--foam);
  border-radius: 1.4rem;
  padding: 1.2rem 1.15rem 1.3rem;
  border: 1px solid var(--mist);
}
.cards article.is-off { display: none; }
.cards span {
  display: inline-block;
  background: #fff;
  color: var(--teal-deep);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 700;
}
.cards h3 { margin: 0.55rem 0 0.4rem; font-size: 1.25rem; }
.cards p, .cards li { color: var(--mute); }
.cards ul { padding-left: 1.1rem; }

.optics {
  display: grid;
  gap: 1.5rem;
  background: linear-gradient(180deg, var(--foam), #e7f4f2);
}
.optics figure img { border-radius: 1.6rem; height: 280px; width: 100%; object-fit: cover; }
.optics figcaption { font-size: 0.82rem; color: var(--mute); margin-top: 0.45rem; }
.mail-format { background: #fff; border-radius: 1.2rem; padding: 1rem 1rem 1rem 1.8rem; color: var(--mute); }

.device-grid { display: grid; gap: 1rem; }
.device-grid article {
  background: #fff;
  padding: 1.15rem;
  border-radius: 1.3rem;
  box-shadow: 0 10px 30px rgba(18, 51, 58, 0.05);
}
.device-grid p { color: var(--mute); }

.repair {
  display: grid;
  gap: 1.5rem;
  background: var(--teal-deep);
  color: #eef7f6;
}
.repair .eyebrow { color: #9ee0da; }
.repair a { color: #fff; }
.repair-visual img { border-radius: 1.6rem; height: 260px; width: 100%; object-fit: cover; }
.repair-table { display: grid; gap: 0.8rem; margin-top: 1rem; }
.repair-table div {
  background: rgba(255,255,255,0.08);
  border-radius: 1rem;
  padding: 0.9rem 1rem;
}
.repair-table strong { display: block; color: #9ee0da; margin-bottom: 0.25rem; }

.visit { background: #fff; }
.lede { color: var(--mute); max-width: 70ch; }
.path { list-style: none; padding: 0; display: grid; gap: 0.9rem; counter-reset: step; }
.path li {
  counter-increment: step;
  background: var(--foam);
  border-radius: 1.2rem;
  padding: 1rem 1rem 1rem 4.2rem;
  position: relative;
}
.path li::before {
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 1rem;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
}
.path h3 { margin: 0 0 0.3rem; }
.path p { margin: 0; color: var(--mute); }

.chart {
  text-align: center;
  background: radial-gradient(circle at 50% 20%, #fff, var(--foam) 55%);
}
.ladder { display: flex; justify-content: center; gap: 0.4rem; margin: 1rem 0; }
.ladder button {
  border: 1px solid var(--mist);
  background: #fff;
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  font-family: inherit;
}
.ladder button.is-on { background: var(--coral); color: #fff; border-color: var(--coral); }
.ladder-line {
  font-family: var(--serif);
  letter-spacing: 0.12em;
  margin: 1.2rem 0;
  transition: font-size 0.2s ease;
}
.ladder-line.size-large { font-size: 2rem; }
.ladder-line.size-mid { font-size: 1.25rem; }
.ladder-line.size-small { font-size: 0.78rem; }
.disclaimer { color: var(--mute); font-size: 0.88rem; max-width: 56ch; margin: 0 auto; }

.capacity { background: #fff; }
.capacity .device-grid { margin-top: 1.2rem; }

.lib-grid { display: grid; gap: 1rem; }
.lib-grid article {
  border-top: 3px solid var(--teal);
  background: #fff;
  padding: 1.1rem;
  border-radius: 0 0 1.1rem 1.1rem;
}
.lib-grid p { color: var(--mute); }

.faq details { border-bottom: 1px solid var(--mist); padding: 0.85rem 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 1.05rem; }
.faq p { color: var(--mute); }

.file { background: #fff; }
.file-grid { display: grid; gap: 0; margin-top: 1.2rem; }
.file-grid > div {
  display: grid;
  gap: 0.2rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--mist);
}
.file-grid span { font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--teal); font-weight: 600; }
.fine { color: var(--mute); font-size: 0.88rem; }

.write {
  display: grid;
  gap: 1.5rem;
  background:
    linear-gradient(rgba(11, 82, 78, 0.88), rgba(11, 82, 78, 0.92)),
    url("https://images.unsplash.com/photo-1519494026892-80bbd2d6fd0d?auto=format&fit=crop&w=1600&q=80") center/cover;
  color: #eef7f6;
}
.write .eyebrow { color: #9ee0da; }
.write a { color: #fff; }
.write h2 { color: #fff; }
address { font-style: normal; line-height: 1.7; margin: 1rem 0; }
form {
  display: grid;
  gap: 0.75rem;
  background: #fff;
  color: var(--ink);
  padding: 1.2rem;
  border-radius: 1.4rem;
}
label { display: grid; gap: 0.3rem; font-size: 0.82rem; font-weight: 600; }
input, select, textarea {
  font: inherit;
  padding: 0.65rem 0.7rem;
  border: 1px solid var(--mist);
  border-radius: 0.7rem;
  background: var(--foam);
}
.form-note, .form-status { font-size: 0.88rem; color: var(--mute); font-weight: 400; }
.form-status.ok { color: var(--teal-deep); }

footer {
  padding: 2rem 1.2rem 2.6rem;
  background: #0c2c30;
  color: #c5dde0;
  font-size: 0.92rem;
}
.foot-brand { display: flex; gap: 0.8rem; align-items: flex-start; margin-bottom: 1rem; color: #fff; }
footer a { color: #fff; }
.copy { opacity: 0.75; }

@media (min-width: 840px) {
  .desk-nav { display: flex; }
  .burger { display: none; }
  .panel, .panel[hidden] { display: none !important; }
  .hero { grid-template-columns: 1.1fr 0.9fr; align-items: center; padding: 3.5rem 5vw; }
  h1 { max-width: 18ch; }
  section { padding: 4.2rem 5vw; }
  .cards { grid-template-columns: 1fr 1fr; }
  .optics { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
  .device-grid { grid-template-columns: repeat(3, 1fr); }
  .repair { grid-template-columns: 0.9fr 1.1fr; align-items: center; }
  .path { grid-template-columns: 1fr 1fr; }
  .lib-grid { grid-template-columns: 1fr 1fr; }
  .file-grid > div { grid-template-columns: 220px 1fr; }
  .write { grid-template-columns: 0.9fr 1.1fr; }
}

@media (max-width: 520px) {
  .brand small { display: none; }
}

@media (min-width: 1100px) {
  .cards { grid-template-columns: repeat(3, 1fr); }
  .lib-grid { grid-template-columns: repeat(3, 1fr); }
}