:root {
  --ink: #102326;
  --muted: #526669;
  --paper: #f8fbfa;
  --white: #ffffff;
  --teal: #0b777c;
  --teal-bright: #18a0a6;
  --teal-soft: #dff3f1;
  --navy: #0d2c34;
  --line: #d9e5e3;
  --radius: 24px;
  --shadow: 0 22px 70px rgba(10, 57, 62, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.narrow { max-width: 820px; text-align: center; }
.skip-link { position: fixed; left: 12px; top: -100px; padding: 10px 16px; background: var(--white); z-index: 100; }
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248, 251, 250, .92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(217, 229, 227, .8);
}
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand img { width: 200px; }

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--teal);
  color: var(--white);
  text-decoration: none;
  font-weight: 750;
  box-shadow: 0 10px 28px rgba(11, 119, 124, .22);
  transition: transform .2s ease, background .2s ease;
}
.button:hover, .button:focus-visible { background: #075f63; transform: translateY(-2px); }
.button-small { min-height: 42px; padding: 0 19px; font-size: .92rem; }
.button-full { width: 100%; }
.text-link { color: var(--teal); font-weight: 750; text-underline-offset: 5px; }
.text-link:hover { color: var(--ink); }

.eyebrow {
  margin: 0 0 18px;
  color: var(--teal);
  font-size: .78rem;
  font-weight: 850;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.eyebrow.light { color: #8de4df; }
h1, h2, h3 { margin-top: 0; line-height: 1.08; letter-spacing: -.035em; }
h1 { max-width: 780px; margin-bottom: 26px; font-size: clamp(3rem, 7vw, 6.6rem); }
h2 { margin-bottom: 24px; font-size: clamp(2.25rem, 4.5vw, 4.2rem); }
h3 { margin-bottom: 12px; font-size: 1.25rem; }
p { margin-top: 0; }

.hero { padding: 96px 0 110px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: clamp(48px, 7vw, 100px); }
.hero-lead { max-width: 740px; margin-bottom: 30px; color: var(--muted); font-size: clamp(1.15rem, 2vw, 1.4rem); }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; }
.status-note { margin: 28px 0 0; color: #647779; font-size: .92rem; }

.signal-visual {
  position: relative;
  min-height: 510px;
  border-radius: 50% 44% 52% 40%;
  background: radial-gradient(circle at 45% 42%, #efffff 0 25%, #cceeea 57%, #b6dedb 100%);
  box-shadow: inset 0 0 0 1px rgba(11, 119, 124, .12), var(--shadow);
}
.tag-device {
  position: absolute;
  left: 50%; top: 50%;
  width: 210px; height: 248px;
  transform: translate(-50%, -50%) rotate(-5deg);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--teal);
  background: var(--white);
  border: 1px solid rgba(11, 119, 124, .16);
  border-radius: 34px;
  box-shadow: 0 30px 70px rgba(13, 44, 52, .2);
}
.tag-device svg { width: 86px; margin-bottom: 20px; }
.tag-device strong { color: var(--ink); }
.tag-dot { position: absolute; top: 22px; width: 8px; height: 8px; border-radius: 50%; background: var(--teal-bright); }
.signal-orbit { position: absolute; border: 1px solid rgba(11, 119, 124, .24); border-radius: 50%; }
.orbit-one { inset: 62px; }
.orbit-two { inset: 22px 80px; }
.alert-card {
  position: absolute;
  display: flex; align-items: center; gap: 10px;
  padding: 14px 17px;
  background: rgba(255,255,255,.94);
  border: 1px solid rgba(11, 119, 124, .14);
  border-radius: 14px;
  box-shadow: 0 16px 38px rgba(13, 44, 52, .12);
  font-size: .88rem; font-weight: 700;
}
.alert-one { top: 84px; right: -10px; }
.alert-two { left: -20px; bottom: 82px; }
.pulse, .pin { flex: 0 0 auto; width: 12px; height: 12px; border-radius: 50%; color: var(--teal); background: var(--teal-bright); }
.pulse { box-shadow: 0 0 0 7px rgba(24,160,166,.14); }

.problem-section { padding: 110px 0; background: var(--white); }
.problem-section p:last-child { color: var(--muted); font-size: 1.2rem; }

.reconnect-section { padding: 120px 0; }
.section-heading { display: grid; grid-template-columns: 1.15fr .7fr; align-items: end; gap: 70px; margin-bottom: 66px; }
.section-heading p:last-child { color: var(--muted); font-size: 1.1rem; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 0; margin: 0; list-style: none; }
.steps li { min-height: 280px; padding: 28px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); }
.steps p { color: var(--muted); }
.step-number { display: block; margin-bottom: 68px; color: var(--teal); font-size: .8rem; font-weight: 850; letter-spacing: .12em; }

.principles-section { padding: 120px 0; color: var(--white); background: var(--navy); }
.principles-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(55px, 9vw, 130px); }
.principles-intro > p:last-child { color: #bfd0d2; font-size: 1.1rem; }
.principles-list article { display: grid; grid-template-columns: 50px 1fr; gap: 18px; padding: 25px 0; border-top: 1px solid rgba(255,255,255,.16); }
.principles-list article > span { color: #76d2ce; font-size: .8rem; font-weight: 800; }
.principles-list p { margin-bottom: 0; color: #bfd0d2; }

.platform-section { padding: 90px 0; }
.platform-card { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; padding: 56px; background: var(--teal-soft); border-radius: 34px; }
.platform-card h2 { margin-bottom: 0; }
.platform-card > p { align-self: end; margin-bottom: 0; color: var(--muted); font-size: 1.08rem; }

.interest-section { padding: 110px 0; color: var(--white); background: linear-gradient(135deg, #0b777c, #0d5961); }
.interest-grid { display: grid; grid-template-columns: 1fr .72fr; align-items: center; gap: clamp(55px, 9vw, 120px); }
.interest-grid > div:first-child > p:last-child { max-width: 670px; color: #d6eeed; font-size: 1.12rem; }
.signup-panel { padding: 34px; color: var(--ink); background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); }
.signup-panel > p { color: var(--muted); }
.echotag-form.sib-form { padding: 8px 0 0; text-align: left; background: transparent; }
.echotag-form .sib-form-container, .echotag-form #sib-container { max-width: none; margin: 0; padding: 0; border: 0; background: transparent; text-align: left; }
.echotag-form .form-block { margin-top: 20px; padding: 0; }
.echotag-form .entry__label { display: block; margin-bottom: 8px; color: var(--ink); font: 750 .92rem/1.35 Inter, ui-sans-serif, system-ui, sans-serif; }
.echotag-form .entry__field { padding: 0; border: 0; background: transparent; }
.echotag-form .entry__field input { width: 100%; min-height: 52px; padding: 13px 15px; color: var(--ink); background: #fff; border: 1px solid #b9ccca; border-radius: 9px; font: 500 1rem/1.4 Inter, ui-sans-serif, system-ui, sans-serif; }
.echotag-form .entry__field input:focus { outline: 3px solid rgba(24,160,166,.18); border-color: var(--teal); }
.echotag-form .entry__field input::placeholder { color: #78898b; }
.echotag-form .consent-block { padding: 18px; background: var(--teal-soft); border-radius: 12px; }
.echotag-form .consent-heading { margin-bottom: 11px; }
.echotag-form .consent-choice { display: grid; grid-template-columns: 22px 1fr; align-items: start; gap: 10px; cursor: pointer; }
.echotag-form .consent-choice .input_replaced { position: absolute; opacity: 0; }
.echotag-form .consent-choice .checkbox { position: relative; display: block; width: 21px; height: 21px; margin: 2px 0 0; background: #fff; border: 2px solid #789694; border-radius: 5px; }
.echotag-form .consent-choice .input_replaced:checked + .checkbox { background: var(--teal); border-color: var(--teal); }
.echotag-form .consent-choice .input_replaced:checked + .checkbox::after { content: ""; position: absolute; left: 5px; top: 1px; width: 6px; height: 11px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.echotag-form .consent-choice .input_replaced:focus-visible + .checkbox { outline: 3px solid rgba(24,160,166,.3); outline-offset: 2px; }
.echotag-form .consent-copy { color: #314c4f; font-size: .86rem; line-height: 1.55; }
.echotag-form .entry__specification { display: block; margin: 9px 0 0 32px; color: #607477; font-size: .75rem; line-height: 1.4; }
.echotag-form .entry__error { display: none; margin-top: 8px; padding: 8px 10px; color: #7a1e1e; background: #ffeded; border-radius: 7px; font-size: .8rem; }
.echotag-form .captcha-block { overflow: hidden; }
.echotag-form .submit-block { margin-top: 18px; padding: 0; }
.echotag-form .sib-form-block__button { width: 100%; min-height: 52px; padding: 13px 18px; color: #fff; background: var(--teal); border: 0; border-radius: 9px; font: 800 .95rem/1.3 Inter, ui-sans-serif, system-ui, sans-serif; text-align: center; cursor: pointer; }
.echotag-form .sib-form-block__button:hover, .echotag-form .sib-form-block__button:focus-visible { background: #075f63; }
.echotag-form .brevo-declaration { margin-top: 20px; color: #66797b; font-size: .72rem; line-height: 1.5; }
.echotag-form .brevo-declaration p { margin: 0; }
.echotag-form a { color: var(--teal); font-weight: 700; text-underline-offset: 3px; }
.echotag-form .privacy-note { margin: 8px 0 0; color: #66797b; font-size: .72rem; line-height: 1.5; }
.echotag-form .form-message { display: none; margin: 14px 0; padding: 14px 16px; border: 1px solid; border-radius: 9px; font-size: .86rem; line-height: 1.5; }
.echotag-form .form-message.sib-form-message-panel--active { display: block; }
.echotag-form .form-message-error { color: #661d1d; background: #ffeded; border-color: #efaaaa; }
.echotag-form .form-message-success { color: #164f42; background: #e7faf0; border-color: #8bd4b1; }

.site-footer { padding: 45px 0; background: #081e23; color: #a9c1c3; font-size: .9rem; }
.footer-grid { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; }
.footer-logo { width: 170px; opacity: .96; }
.footer-grid p { margin: 8px 0 0; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { text-underline-offset: 4px; }
.legal { text-align: right; }

.policy-page { padding: 90px 0 110px; background: var(--white); }
.policy-shell { max-width: 840px; }
.policy-page h1 { max-width: 820px; font-size: clamp(2.8rem, 6vw, 5rem); }
.policy-page h2 { margin-top: 52px; margin-bottom: 14px; font-size: clamp(1.55rem, 3vw, 2.1rem); }
.policy-page p { color: var(--muted); font-size: 1.05rem; }
.policy-page a { color: var(--teal); font-weight: 700; text-underline-offset: 4px; }
.policy-lead { padding-bottom: 28px; border-bottom: 1px solid var(--line); font-size: 1.2rem !important; }

@media (max-width: 930px) {
  .hero { padding-top: 70px; }
  .hero-grid, .section-heading, .principles-grid, .interest-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 760px; }
  .signal-visual { width: min(100%, 620px); margin: 0 auto; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .section-heading { gap: 15px; }
  .platform-card { grid-template-columns: 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .legal { grid-column: 1 / -1; text-align: left; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 28px, 1180px); }
  .site-header .button { display: none; }
  .header-inner { min-height: 68px; }
  .brand img { width: 170px; }
  .hero { padding: 60px 0 75px; }
  h1 { font-size: clamp(2.8rem, 15vw, 4.4rem); }
  h2 { font-size: clamp(2.1rem, 11vw, 3rem); }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .signal-visual { min-height: 390px; }
  .tag-device { width: 160px; height: 200px; }
  .alert-card { max-width: 190px; font-size: .76rem; }
  .alert-one { right: -6px; top: 45px; }
  .alert-two { left: -6px; bottom: 50px; }
  .orbit-one { inset: 44px; }
  .problem-section, .reconnect-section, .principles-section, .interest-section { padding: 80px 0; }
  .steps { grid-template-columns: 1fr; }
  .steps li { min-height: 0; }
  .step-number { margin-bottom: 38px; }
  .platform-section { padding: 60px 0; }
  .platform-card { width: calc(100% - 28px); padding: 34px 24px; }
  .signup-panel { padding: 26px 22px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { flex-direction: column; gap: 8px; }
  .legal { grid-column: auto; }
}

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