/* ==========================================================================
   Enwires — tokens
   ========================================================================== */
:root {
  --bg: #444345;
  --charcoal: #2B2B2C;
  --paper: #EFEDEA;
  --paper-2: #E3E0DB;
  --ink: #F5F4F2;
  --ink-dim: #C7C5C6;
  --ink-on-paper: #232223;
  --ink-on-paper-dim: #5C5A58;
  --red: #FF1400;
  --red-dim: #B31000;
  --line: #5C5B5D;
  --line-on-paper: #D3CFC8;

  --font-display: "Space Grotesk", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;

  --max: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 1em;
  max-width: 62ch;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

/* ==========================================================================
   Header / nav
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(43, 43, 44, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  height: 34px;
  width: auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.brand-tagline {
  font-size: .68rem;
  color: var(--ink-dim);
}

.site-nav {
  display: flex;
  gap: 28px;
}

.site-nav a {
  text-decoration: none;
  font-size: .95rem;
  color: var(--ink-dim);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}

.site-nav a:hover {
  color: var(--ink);
}

.site-nav a.is-active {
  color: var(--ink);
  border-color: var(--red);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.lang-switch a,
.lang-switch-current {
  font-family: var(--font-body);
  font-size: .82rem;
  text-decoration: none;
}

/* Animated hover/focus frame: a 1px border that draws in from a slightly
   scaled-down state rather than just appearing, using an absolutely
   positioned pseudo-element so it never shifts surrounding layout. */
.lang-switch a {
  position: relative;
  color: var(--ink-dim);
  padding: 4px 8px;
  border-radius: 2px;
  transition: color .15s ease;
}

.lang-switch a::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  border: 1px solid var(--red);
  border-radius: 2px;
  opacity: 0;
  transform: scale(.82);
  transition: opacity .25s ease, transform .3s cubic-bezier(.25, .8, .35, 1);
  pointer-events: none;
}

.lang-switch a:hover,
.lang-switch a:focus-visible {
  color: var(--ink);
}

.lang-switch a:hover::before,
.lang-switch a:focus-visible::before {
  opacity: 1;
  transform: scale(1);
}

.lang-switch-current {
  padding: 4px 8px;
  color: var(--red);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
  display: block;
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--charcoal);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--line);
    max-height: 0;
    overflow: hidden;
  }

  .site-nav.is-open {
    max-height: 340px;
  }

  .site-nav a {
    padding: 16px 24px;
    border-left: 2px solid transparent;
  }

  .site-nav a.is-active {
    border-left-color: var(--red);
    border-bottom-color: var(--line);
  }

  .lang-switch {
    margin-left: 0;
    padding: 6px 18px;
    border-left: 0;
    border-top: 1px solid var(--line);
    gap: 16px;
  }
}

/* ==========================================================================
   Diagonal ribbon divider — echoes the logotype's cut ribbons
   ========================================================================== */
.ribbon-divider {
  height: 10px;
  background:
    repeating-linear-gradient(-35deg,
      var(--red) 0 34px,
      transparent 34px 44px);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: flex-end;
  background-color: var(--charcoal);
  background-image: linear-gradient(180deg, rgba(43, 43, 44, 0.35) 0%, rgba(30, 30, 31, 0.92) 78%), url('../img/electronic-microscope-molecule-zoom.jpg');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero-inner {
  padding-bottom: 64px;
  animation: fade-up .7s ease both;
}

.hero-eyebrow {
  color: var(--red);
  font-family: var(--font-display);
  font-size: .95rem;
  margin: 0 0 14px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5.2vw, 4rem);
  max-width: 14ch;
  color: var(--ink);
}

.hero p {
  color: var(--ink-dim);
  font-size: 1.15rem;
  max-width: 46ch;
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .95rem;
  padding: 13px 26px;
  text-decoration: none;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}

.btn-primary {
  background: var(--red);
  color: #fff;
}

.btn-primary:hover {
  background: var(--red-dim);
}

.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--ink);
}

.btn-ghost.on-paper {
  border-color: var(--line-on-paper);
  color: var(--ink-on-paper);
}

.btn-ghost.on-paper:hover {
  border-color: var(--ink-on-paper);
}

/* ==========================================================================
   Section bands
   ========================================================================== */
.band {
  padding: 88px 0;
}

.band-charcoal {
  background: var(--charcoal);
}

.band-paper {
  background: var(--paper);
  color: var(--ink-on-paper);
}

.band-paper p {
  color: var(--ink-on-paper-dim);
}

.band-paper h2,
.band-paper h3 {
  color: var(--ink-on-paper);
}

.band-bg {
  background: var(--bg);
}

.band+.band {
  border-top: 1px solid var(--line);
}

.band-paper+.band-paper {
  border-top-color: var(--line-on-paper);
}

.section-head {
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

/* two-column layout */
.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: start;
}

@media (max-width: 820px) {
  .split {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* stat block */
.stat {
  border-left: 3px solid var(--red);
  padding-left: 22px;
}

.stat .num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 7vw, 5.2rem);
  line-height: 1;
  color: var(--ink);
}

.band-paper .stat .num {
  color: var(--red);
}

.stat .label {
  color: var(--ink-dim);
  font-size: .95rem;
  margin-top: 10px;
}

.band-paper .stat .label {
  color: var(--ink-on-paper-dim);
}

/* value prop list (no icon cards) */
.value-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 68ch;
}

.value-list li {
  padding: 26px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
}

.value-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.value-list h3 {
  font-size: 1.05rem;
  margin: 0;
  color: var(--ink);
}

.value-list p {
  margin: 0;
  color: var(--ink-dim);
}

@media (max-width: 620px) {
  .value-list li {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

/* filmstrip */
.filmstrip {
  display: flex;
  gap: 2px;
  overflow-x: auto;
}

.filmstrip img {
  height: 220px;
  width: 20%;
  min-width: 180px;
  flex: 1 0 180px;
  object-fit: cover;
  filter: grayscale(15%);
}

/* before/after */
.compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.compare figure {
  margin: 0;
  position: relative;
}

.compare img {
  width: 100%;
  height: auto;
}

.compare figcaption {
  margin-top: 14px;
  color: var(--ink-on-paper-dim);
  font-size: .92rem;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

@media (max-width: 700px) {
  .compare-grid {
    grid-template-columns: 1fr;
  }
}

/* how it works list */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.steps li {
  padding: 18px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-dim);
}

.steps li:last-child {
  border-bottom: 1px solid var(--line);
}

.steps strong {
  color: var(--ink);
}

/* ==========================================================================
   Contact form
   ========================================================================== */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-grid .full {
  grid-column: 1 / -1;
}

@media (max-width: 620px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: .82rem;
  color: var(--ink-on-paper-dim);
}

.field input,
.field textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 13px 14px;
  background: #fff;
  border: 1px solid var(--line-on-paper);
  border-radius: 2px;
  color: var(--ink-on-paper);
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(255, 20, 0, 0.12);
}

.field textarea {
  resize: vertical;
  min-height: 140px;
}

.form-note {
  font-size: .8rem;
  color: var(--ink-on-paper-dim);
  margin-top: 4px;
}

.alert {
  padding: 14px 18px;
  border-radius: 2px;
  margin-bottom: 24px;
  font-size: .95rem;
}

.alert-success {
  background: #E4F2E5;
  color: #1E5A24;
  border: 1px solid #B9DCBB;
}

.alert-error {
  background: #FBE4E1;
  color: #8A1B0E;
  border: 1px solid #F1B4AB;
}

.contact-info {
  padding-top: 4px;
}

.contact-info dt {
  font-family: var(--font-display);
  color: var(--ink-on-paper);
  margin-top: 24px;
  font-size: .85rem;
}

.contact-info dt:first-child {
  margin-top: 0;
}

.contact-info dd {
  margin: 6px 0 0;
  color: var(--ink-on-paper-dim);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--charcoal);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
  padding: 32px 24px;
  font-size: .9rem;
  color: var(--ink-dim);
}

.footer-inner a {
  text-decoration: none;
}

.footer-inner a:hover {
  color: var(--ink);
}

.footer-nav {
  display: flex;
  gap: 18px;
}

.footer-nav a {
  margin-right: 18px;
}

.footer-nav a:last-child {
  margin-right: 0;
}

.footer-bottom {
  padding: 0 24px 28px;
  font-size: .78rem;
  color: #8B8A8C;
}

/* ==========================================================================
   Utility
   ========================================================================== */
.mt-0 {
  margin-top: 0;
}

.center-narrow {
  max-width: 62ch;
}