/* ===================================================================
   SQUVA — Dive into Hydrophilicity
   Premium dark-ocean design system
   =================================================================== */

:root {
  --ink-deep: #04122a;
  --ink: #071a3a;
  --ink-soft: #0d2a55;
  --line: rgba(160, 200, 255, 0.14);
  --line-strong: rgba(160, 200, 255, 0.28);
  --aqua: #38c5ff;
  --aqua-deep: #0a8acb;
  --aqua-glow: rgba(56, 197, 255, 0.45);
  --white: #ffffff;
  --soft: #cfe1ff;
  --dim: #8aa2c8;
  --warn: #ffce4d;
  --shell: linear-gradient(160deg, #02091a 0%, #06173a 45%, #0a2c66 100%);
  --card: rgba(255, 255, 255, 0.04);
  --card-strong: rgba(255, 255, 255, 0.07);
  --shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.7);
  --radius: 18px;
  --radius-lg: 28px;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --display: "Sora", "Inter", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font);
  color: var(--white);
  background: var(--ink-deep);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  background: var(--shell);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: var(--aqua); text-decoration: none; transition: color .2s; }
a:hover { color: var(--white); }

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

.bubbles { position: fixed; inset: 0; pointer-events: none; overflow: hidden; z-index: 0; }
.bubbles span {
  position: absolute; bottom: -100px; width: 14px; height: 14px;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.9), rgba(56,197,255,.25) 60%, transparent 70%);
  border-radius: 50%; opacity: 0; animation: rise 14s linear infinite;
}
.bubbles span:nth-child(1)  { left: 5%;  width: 18px; height: 18px; animation-duration: 16s; animation-delay: 0s;  }
.bubbles span:nth-child(2)  { left: 15%; width: 8px;  height: 8px;  animation-duration: 11s; animation-delay: 2s;  }
.bubbles span:nth-child(3)  { left: 25%; width: 22px; height: 22px; animation-duration: 19s; animation-delay: 4s;  }
.bubbles span:nth-child(4)  { left: 35%; width: 6px;  height: 6px;  animation-duration: 9s;  animation-delay: 1s;  }
.bubbles span:nth-child(5)  { left: 45%; width: 14px; height: 14px; animation-duration: 13s; animation-delay: 6s;  }
.bubbles span:nth-child(6)  { left: 55%; width: 10px; height: 10px; animation-duration: 15s; animation-delay: 3s;  }
.bubbles span:nth-child(7)  { left: 65%; width: 26px; height: 26px; animation-duration: 22s; animation-delay: 7s;  }
.bubbles span:nth-child(8)  { left: 72%; width: 12px; height: 12px; animation-duration: 12s; animation-delay: 5s;  }
.bubbles span:nth-child(9)  { left: 80%; width: 18px; height: 18px; animation-duration: 17s; animation-delay: 0s;  }
.bubbles span:nth-child(10) { left: 90%; width: 8px;  height: 8px;  animation-duration: 10s; animation-delay: 4s;  }
.bubbles span:nth-child(11) { left: 50%; width: 6px;  height: 6px;  animation-duration: 8s;  animation-delay: 8s;  }
.bubbles span:nth-child(12) { left: 18%; width: 30px; height: 30px; animation-duration: 24s; animation-delay: 11s; }
@keyframes rise {
  0%   { transform: translateY(0)    scale(.8); opacity: 0; }
  10%  { opacity: .9; }
  100% { transform: translateY(-110vh) scale(1.1); opacity: 0; }
}

.shell { position: relative; z-index: 1; max-width: 1240px; margin: 0 auto; padding: 0 28px; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: rgba(4, 18, 42, 0.65);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 18px; padding: 14px 0; flex-wrap: nowrap; }
.brand-cluster {
  display: flex; align-items: center; gap: 14px;
  flex: 0 0 auto;
}
.dentis-logo {
  display: inline-flex; align-items: center;
  background: #fff; border-radius: 8px;
  padding: 6px 10px;
  height: 36px;
  text-decoration: none;
  transition: transform .15s, box-shadow .2s;
  box-shadow: 0 4px 14px -6px rgba(0,0,0,.5);
}
.dentis-logo:hover { transform: translateY(-1px); box-shadow: 0 6px 18px -4px rgba(240,108,31,.4); }
.dentis-logo svg { display: block; height: 20px; width: auto; }
.uk-flag,
.ce-mark {
  display: inline-flex; align-items: center; justify-content: center;
  height: 36px;
}
.uk-flag svg { display: block; height: 22px; width: auto; border-radius: 2px; box-shadow: 0 2px 6px rgba(0,0,0,.3); }
.ce-mark {
  color: var(--white);
  background: rgba(255,255,255,.08);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 4px 8px;
  font-family: var(--display); font-weight: 800; font-size: 14px;
  letter-spacing: 2px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: #ffffff;
  font-family: var(--display); font-weight: 800;
  letter-spacing: 4px; font-size: 30px;
}
.brand .dot {
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--aqua);
  box-shadow: 0 0 0 3px rgba(56,197,255,.18), 0 0 22px var(--aqua-glow);
}
.brand-sub {
  font-size: 14px; letter-spacing: 2.8px; font-weight: 600;
  color: #ffffff; text-transform: uppercase;
}
.brand-sub a { color: #ffffff; text-decoration: none; border-bottom: 1px dotted rgba(255,255,255,.35); }
.brand-sub a:hover { color: var(--aqua); border-bottom-color: var(--aqua); }
@media (max-width: 1080px) {
  .uk-flag, .ce-mark { display: none; }
}
@media (max-width: 720px) {
  .brand { font-size: 24px; }
  .brand-sub { display: none; }
}
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.nav-links a {
  color: var(--soft); padding: 9px 14px; border-radius: 999px;
  font-size: 14px; font-weight: 500; letter-spacing: .3px;
  transition: background .2s, color .2s;
}
.nav-links a:hover { color: var(--white); background: rgba(255,255,255,.06); }
.nav-links a.active {
  background: linear-gradient(120deg, var(--aqua-deep), var(--aqua));
  color: var(--white);
  box-shadow: 0 6px 22px -8px var(--aqua-glow);
}
.nav-cta {
  margin-left: 8px; padding: 10px 18px; border-radius: 999px;
  background: var(--white); color: var(--ink-deep) !important;
  font-weight: 700; font-size: 13px; letter-spacing: .5px;
}
.nav-cta:hover { background: var(--aqua); color: var(--ink-deep) !important; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line-strong);
  color: var(--white); padding: 8px 12px; border-radius: 8px;
  cursor: pointer; margin-left: auto;
}
@media (max-width: 920px) {
  .nav-toggle { display: inline-block; }
  .nav-links {
    display: none; position: absolute; top: 64px; left: 16px; right: 16px;
    flex-direction: column; align-items: stretch;
    background: rgba(4,18,42,.96); border: 1px solid var(--line);
    border-radius: 16px; padding: 10px; gap: 4px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; }
}

.hero { position: relative; padding: 90px 0 60px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -10% -10% auto -10%; height: 70%;
  background:
    radial-gradient(60% 80% at 50% 0%, rgba(56,197,255,.35), transparent 70%),
    radial-gradient(40% 60% at 80% 30%, rgba(10,138,203,.25), transparent 70%);
  filter: blur(20px); z-index: -1;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 60px; align-items: center; }
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  background: rgba(56,197,255,.12); border: 1px solid rgba(56,197,255,.35);
  color: var(--aqua); font-size: 12px; font-weight: 600;
  letter-spacing: 2px; text-transform: uppercase;
}
.eyebrow .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--aqua);
  box-shadow: 0 0 0 0 var(--aqua-glow);
  animation: pulse 1.6s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(56,197,255,.55); }
  70%  { box-shadow: 0 0 0 14px rgba(56,197,255,0); }
  100% { box-shadow: 0 0 0 0 rgba(56,197,255,0); }
}
h1.title {
  font-family: var(--display);
  font-size: clamp(44px, 6.4vw, 84px);
  font-weight: 800; line-height: .98; letter-spacing: -1.5px;
  margin: 22px 0 18px;
}
h1.title .grad {
  background: linear-gradient(110deg, #fff 10%, var(--aqua) 60%, #6eddff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { font-size: 20px; line-height: 1.55; color: var(--soft); max-width: 560px; margin-bottom: 30px; }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 999px;
  font-weight: 700; font-size: 15px; letter-spacing: .3px;
  cursor: pointer; transition: transform .15s, box-shadow .2s, background .2s;
  border: 0; text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(110deg, var(--aqua), #6eddff);
  color: var(--ink-deep);
  box-shadow: 0 14px 40px -14px var(--aqua-glow);
}
.btn-primary:hover { color: var(--ink-deep); box-shadow: 0 20px 50px -12px var(--aqua-glow); }
.btn-ghost {
  background: rgba(255,255,255,.06); color: var(--white);
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover { background: rgba(255,255,255,.12); color: var(--white); }
.btn .arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(3px); }

.hero-device {
  position: relative; border-radius: var(--radius-lg);
  background:
    radial-gradient(80% 60% at 50% 30%, rgba(56,197,255,.35), transparent 70%),
    linear-gradient(160deg, #0a2152, #050d22);
  padding: 30px; border: 1px solid var(--line-strong);
  box-shadow: var(--shadow); overflow: hidden;
}
.hero-device::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(56,197,255,.4), transparent 50%);
  pointer-events: none;
}
.hero-device .device-svg { position: relative; z-index: 1; width: 100%; }
.hero-device .device-photo {
  position: relative; z-index: 1;
  width: 100%; height: auto; display: block;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px -20px rgba(0,0,0,.6);
}
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 24px; position: relative; z-index: 1; }
.stat { background: rgba(0,0,0,.35); border: 1px solid var(--line); border-radius: 14px; padding: 14px; text-align: center; }
.stat-num { font-family: var(--display); font-size: 26px; font-weight: 800; color: var(--aqua); letter-spacing: -.5px; }
.stat-label { font-size: 11px; color: var(--dim); text-transform: uppercase; letter-spacing: 1.4px; }

section { padding: 80px 0; position: relative; }
section.tight { padding: 60px 0; }
.section-head { max-width: 760px; margin-bottom: 44px; }
.section-head .eyebrow { margin-bottom: 16px; }
.section-head h2 {
  font-family: var(--display);
  font-size: clamp(30px, 3.6vw, 46px);
  font-weight: 800; letter-spacing: -.8px; line-height: 1.05;
  margin: 0 0 14px;
}
.section-head p { font-size: 17px; color: var(--soft); line-height: 1.65; margin: 0; }

.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.feature {
  position: relative; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; transition: transform .2s, border-color .2s, background .2s;
}
.feature:hover { transform: translateY(-3px); border-color: var(--line-strong); background: var(--card-strong); }
.feature .icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(56,197,255,.25), rgba(10,138,203,.05));
  border: 1px solid rgba(56,197,255,.35);
  margin-bottom: 16px; color: var(--aqua);
}
.feature h3 { font-family: var(--display); font-size: 18px; font-weight: 700; margin: 0 0 8px; }
.feature p { color: var(--soft); font-size: 14px; line-height: 1.6; margin: 0; }

.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.stat-card {
  text-align: center; padding: 36px 22px; border-radius: var(--radius);
  background:
    radial-gradient(80% 80% at 50% 0%, rgba(56,197,255,.18), transparent 70%),
    linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border: 1px solid var(--line);
}
.stat-card .big {
  font-family: var(--display); font-size: 56px; font-weight: 800;
  background: linear-gradient(110deg, #fff, var(--aqua));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1; letter-spacing: -2px;
}
.stat-card .label { margin-top: 10px; color: var(--soft); font-size: 14px; line-height: 1.4; }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; counter-reset: step; }
.step {
  position: relative; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px 22px 22px; background: var(--card);
}
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  position: absolute; top: -16px; left: 22px;
  font-family: var(--display); font-size: 14px; font-weight: 800; letter-spacing: 2px;
  color: var(--ink-deep); background: var(--aqua);
  padding: 6px 12px; border-radius: 999px;
  box-shadow: 0 6px 18px -6px var(--aqua-glow);
}
.step h4 { font-family: var(--display); margin: 8px 0 8px; font-size: 17px; font-weight: 700; }
.step p { color: var(--soft); font-size: 14px; line-height: 1.6; margin: 0; }

.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 720px) { .compare { grid-template-columns: 1fr; } }
.compare > div { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; background: var(--card); }
.compare h4 { font-family: var(--display); margin: 0 0 10px; font-size: 16px; letter-spacing: .5px; text-transform: uppercase; }
.compare ul { list-style: none; padding: 0; margin: 0; }
.compare li {
  padding: 10px 0; border-bottom: 1px dashed var(--line);
  color: var(--soft); font-size: 14px;
  display: flex; gap: 10px; align-items: flex-start;
}
.compare li:last-child { border-bottom: 0; }
.compare li::before { content: "•"; color: var(--aqua); font-size: 18px; line-height: 1; }
.compare .neg li::before { content: "×"; color: #ff8b8b; }

.spec-table {
  width: 100%; border-collapse: collapse; font-size: 14.5px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
}
.spec-table th, .spec-table td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); color: var(--soft); }
.spec-table tr:last-child td { border-bottom: 0; }
.spec-table th { background: rgba(56,197,255,.08); color: var(--white); font-weight: 600; letter-spacing: .5px; font-size: 13px; text-transform: uppercase; }
.spec-table td:first-child { color: var(--white); font-weight: 600; width: 40%; }

.case-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.case {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px;
  background:
    radial-gradient(80% 60% at 100% 0%, rgba(56,197,255,.12), transparent 70%),
    var(--card);
  position: relative; overflow: hidden;
}
.case .tag {
  display: inline-block; padding: 4px 10px; border-radius: 999px;
  background: rgba(56,197,255,.16); color: var(--aqua);
  font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase;
  font-weight: 700; margin-bottom: 14px;
}
.case h3 { font-family: var(--display); font-size: 19px; margin: 0 0 10px; font-weight: 700; }
.case p { color: var(--soft); font-size: 14px; line-height: 1.6; margin: 0 0 16px; }
.isq-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.isq { text-align: center; padding: 12px; border-radius: 12px; background: rgba(0,0,0,.25); border: 1px solid var(--line); }
.isq .v { font-family: var(--display); font-size: 22px; font-weight: 800; color: var(--white); }
.isq .v.aqua { color: var(--aqua); }
.isq .l { display: block; font-size: 11px; letter-spacing: 1.4px; color: var(--dim); text-transform: uppercase; margin-top: 4px; }

.quote {
  border-left: 3px solid var(--aqua); padding: 22px 26px;
  background: rgba(56,197,255,.06);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 17px; line-height: 1.65; color: var(--white); font-style: italic;
}
.quote cite { display: block; margin-top: 12px; font-style: normal; color: var(--dim); font-size: 13px; letter-spacing: 1px; text-transform: uppercase; }

.video-card {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--line-strong); background: #000; box-shadow: var(--shadow);
}
.video-card video, .video-card iframe { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; }
.video-card-vertical {
  max-width: 380px;
  margin: 0 auto;
}
.video-card-vertical iframe { aspect-ratio: 9 / 16; }

.manual-list { list-style: none; padding: 0; margin: 0; counter-reset: m; }
.manual-list li {
  position: relative; padding: 18px 22px 18px 70px;
  border: 1px solid var(--line); border-radius: 14px;
  background: var(--card); margin-bottom: 12px;
  font-size: 15px; color: var(--soft); line-height: 1.55;
}
.manual-list li::before {
  counter-increment: m; content: counter(m);
  position: absolute; top: 50%; left: 16px; transform: translateY(-50%);
  width: 40px; height: 40px;
  display: grid; place-items: center; border-radius: 50%;
  background: linear-gradient(135deg, var(--aqua), var(--aqua-deep));
  color: var(--ink-deep); font-family: var(--display);
  font-weight: 800; font-size: 16px;
}
.manual-list strong { color: var(--white); display: block; margin-bottom: 4px; }

.parts { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.part {
  border: 1px solid var(--line); background: var(--card);
  border-radius: var(--radius); padding: 22px 20px; text-align: left;
  transition: transform .2s, border-color .2s;
}
.part:hover { transform: translateY(-2px); border-color: var(--aqua); }
.part .pic {
  width: 100%; aspect-ratio: 4/3; border-radius: 12px;
  background: linear-gradient(160deg, #0a2152, #050d22);
  border: 1px solid var(--line); margin-bottom: 14px;
  display: grid; place-items: center; color: var(--aqua);
}
.part h4 { margin: 0 0 4px; font-family: var(--display); font-size: 15px; }
.part p { margin: 0; color: var(--dim); font-size: 13px; line-height: 1.5; }

.callout {
  border-radius: var(--radius-lg); padding: 44px 36px;
  background:
    radial-gradient(50% 100% at 0% 50%, rgba(56,197,255,.25), transparent 70%),
    linear-gradient(160deg, #082252, #03102b);
  border: 1px solid var(--line-strong);
  display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center;
}
@media (max-width: 720px) { .callout { grid-template-columns: 1fr; } }
.callout h3 { font-family: var(--display); font-size: 26px; font-weight: 800; margin: 0 0 8px; letter-spacing: -.5px; }
.callout p { color: var(--soft); margin: 0; max-width: 560px; }

footer { border-top: 1px solid var(--line); margin-top: 60px; padding: 40px 0 30px; color: var(--dim); font-size: 13px; }
.foot { display: flex; gap: 20px; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; }
.foot .small { max-width: 460px; line-height: 1.6; }
.foot a { color: var(--soft); margin-right: 16px; }

.page-head { padding: 80px 0 40px; text-align: left; position: relative; }
.page-head::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 100%;
  background: radial-gradient(60% 80% at 0% 0%, rgba(56,197,255,.16), transparent 70%);
  z-index: -1;
}
.page-head h1 {
  font-family: var(--display);
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 800; letter-spacing: -1px; line-height: 1.05;
  margin: 16px 0 12px;
}
.page-head p { font-size: 18px; color: var(--soft); max-width: 700px; line-height: 1.6; margin: 0; }

.faq details { border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin-bottom: 10px; background: var(--card); }
.faq details[open] { border-color: var(--aqua); }
.faq summary {
  cursor: pointer; font-family: var(--display); font-weight: 700;
  font-size: 16px; color: var(--white); list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq summary::after { content: "+"; font-size: 22px; color: var(--aqua); transition: transform .2s; }
.faq details[open] summary::after { content: "−"; }
.faq p { color: var(--soft); margin: 14px 0 0; line-height: 1.65; font-size: 15px; }

.two-col { display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center; }
@media (max-width: 920px) { .two-col { grid-template-columns: 1fr; } }
.two-col h2 { font-family: var(--display); font-size: clamp(28px, 3.5vw, 42px); margin: 0 0 14px; font-weight: 800; letter-spacing: -.7px; }
.two-col p { color: var(--soft); font-size: 17px; line-height: 1.65; }
.two-col .visual {
  border-radius: var(--radius-lg); padding: 24px;
  background: radial-gradient(60% 80% at 50% 0%, rgba(56,197,255,.25), transparent 70%), linear-gradient(160deg, #0a2152, #050d22);
  border: 1px solid var(--line-strong); box-shadow: var(--shadow);
  min-height: 320px; display: grid; place-items: center;
}

.center { text-align: center; }
.muted { color: var(--dim); }
hr.div { border: 0; border-top: 1px solid var(--line); margin: 50px 0; }
.note { font-size: 12px; color: var(--dim); letter-spacing: .5px; margin-top: 18px; }

.fade-up { opacity: 0; transform: translateY(20px); transition: opacity .8s, transform .8s; }
.fade-up.in { opacity: 1; transform: translateY(0); }

/* ============================================================
   MOBILE — keep everything inside the viewport on phones
   ============================================================ */
html, body { overflow-x: hidden; max-width: 100%; }
img, svg, video, iframe { max-width: 100%; }

/* Tablet ≤ 720px */
@media (max-width: 720px) {
  .shell { padding: 0 16px; }
  section { padding: 50px 0; }
  section.tight { padding: 36px 0; }
  .hero { padding: 50px 0 30px; }
  .hero-grid { gap: 26px; }
  .hero-device { padding: 18px; border-radius: 20px; }
  .hero-stats { gap: 8px; }
  .stat { padding: 10px 6px; }
  .stat-num { font-size: 20px; }
  .stat-label { font-size: 9.5px; letter-spacing: 1px; }
  .lede { font-size: 17px; }
  .cta-row { flex-direction: column; align-items: stretch; }
  .cta-row .btn { justify-content: center; width: 100%; }
  .btn { padding: 13px 18px; font-size: 14px; }

  .section-head { margin-bottom: 28px; }
  .section-head h2 { font-size: 26px; line-height: 1.1; }
  .section-head p { font-size: 15px; }

  .stat-card { padding: 24px 14px; }
  .stat-card .big { font-size: 36px; letter-spacing: -1px; }

  .feature { padding: 22px 18px; }
  .feature h3 { font-size: 16px; }
  .feature p { font-size: 13.5px; }

  .case { padding: 22px 18px; }
  .isq-row { grid-template-columns: 1fr; }
  .isq .v { font-size: 18px; }

  .quote { padding: 18px 18px; font-size: 15px; }

  .callout { padding: 28px 22px; }
  .callout h3 { font-size: 21px; }

  .manual-list li { padding: 14px 16px 14px 60px; font-size: 14px; }
  .manual-list li::before { width: 34px; height: 34px; left: 12px; font-size: 14px; }

  .spec-table { font-size: 13px; }
  .spec-table th, .spec-table td { padding: 10px 12px; }
  .spec-table td:first-child { width: 45%; }

  .page-head { padding: 50px 0 22px; }
  .page-head h1 { font-size: 32px; }
  .page-head p { font-size: 16px; }

  h1.title { font-size: 38px; line-height: 1; letter-spacing: -1px; }

  .video-card-vertical { max-width: 100%; }

  .nav { gap: 12px; padding: 10px 0; }
  .uk-flag svg { height: 18px; }
  .ce-mark { padding: 3px 7px; font-size: 12px; }
  .nav-links a { font-size: 15px; padding: 12px 14px; }

  footer .shell { gap: 22px !important; }

  .compare { gap: 12px; }
  .compare > div { padding: 20px 18px; }

  .parts { grid-template-columns: 1fr; }

  .two-col { gap: 28px; }
  .two-col .visual { min-height: 220px; }
}

/* Phone ≤ 480px — extra-tight */
@media (max-width: 480px) {
  .shell { padding: 0 14px; }
  section { padding: 40px 0; }
  .hero { padding: 36px 0 18px; }
  h1.title { font-size: 32px; }
  .lede { font-size: 16px; line-height: 1.5; }
  .section-head h2 { font-size: 22px; }
  .stat-card .big { font-size: 30px; }
  .callout { padding: 22px 18px; }
  .callout h3 { font-size: 19px; }
  .page-head h1 { font-size: 26px; }
  .brand { font-size: 21px; letter-spacing: 3px; }
  .uk-flag svg { height: 16px; }
  .ce-mark { padding: 3px 6px; font-size: 11px; }
  .nav { gap: 10px; }
  .nav-cta { padding: 8px 14px; font-size: 12px; }
  /* Slow & reduce bubble visual cost on tiny phones */
  .bubbles span:nth-child(n+8) { display: none; }
}