:root {
  --green: #108f7d;
  --bright-green: #61cb27;
  --ink: #232323;
  --paper: #f6f8f7;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 20%, rgba(145, 194, 185, .12), transparent 23rem),
    radial-gradient(circle at 80% 70%, rgba(132, 177, 170, .09), transparent 25rem),
    #f7f9f8;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 18px;
  line-height: 1.45;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: .11;
  pointer-events: none;
  content: "";
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.78' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.32'/%3E%3C/svg%3E");
}

.content-width {
  width: min(1036px, calc(100% - 40px));
  margin-inline: auto;
}

.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 344px;
  overflow: hidden;
  padding: 34px 24px;
  background:
    radial-gradient(circle at 15% 22%, rgba(80, 145, 135, .16), transparent 30%),
    radial-gradient(circle at 86% 78%, rgba(93, 157, 147, .13), transparent 29%),
    #b6dad4;
}

.hero img {
  display: block;
  width: min(534px, 72vw);
  max-width: 100%;
  height: auto;
}

.intro {
  padding-top: 20px;
  padding-bottom: 0;
}

.intro h2 {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 26px;
  line-height: 1.2;
}

.intro p {
  margin: 0 0 25px;
  font-size: 20px;
  line-height: 1.35;
}

.verification {
  position: relative;
  min-height: 735px;
  margin-top: -5px;
  background:
    linear-gradient(to bottom, rgba(247,249,248,.1) 0%, rgba(247,249,248,.55) 35%, rgba(247,249,248,.78) 100%),
    url("assets/watercolor.webp") center bottom / 100% auto no-repeat;
}

.verification-inner {
  padding-top: 0;
  text-align: center;
}

.warning-icon {
  height: 64px;
  font-size: 60px;
  line-height: 1;
}

.trust-notice {
  margin: 10px auto 12px;
  font-size: 29px;
  font-weight: 800;
  line-height: 1.28;
}

.trust-notice span {
  display: table;
  margin: 0 auto 2px;
  padding: 1px 8px;
  color: #fff;
  background: var(--green);
}

.verification h2 {
  margin: 8px 0 16px;
  color: var(--green);
  font-size: 39px;
  line-height: 1.12;
}

.instruction {
  margin: 0;
  color: #000;
  font-size: 20px;
  font-weight: 700;
}

.example {
  margin: 16px 0 18px;
  color: #111;
  font-size: 17px;
}

#checkNumberWrap {
  width: min(590px, 100%);
  margin: 0 auto;
}

#checkNumberForm {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.phoneNumberInput {
  width: 100%;
  min-height: 55px;
  padding: 12px 18px;
  border: 1px solid #8e9b98;
  border-radius: 3px;
  outline: none;
  background: rgba(255,255,255,.94);
  box-shadow: 0 4px 15px rgba(22, 75, 68, .08);
  color: #171717;
  font: inherit;
  text-align: center;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.phoneNumberInput:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(16, 143, 125, .16);
}

.checkNumberSubmit {
  min-width: 245px;
  min-height: 50px;
  padding: 12px 24px;
  border: 0;
  border-radius: 3px;
  cursor: pointer;
  color: #fff;
  background: var(--green);
  box-shadow: 0 5px 14px rgba(16, 101, 89, .18);
  font: inherit;
  font-weight: 700;
  transition: transform .18s ease, background-color .18s ease;
}

.checkNumberSubmit:hover {
  background: #087b6d;
  transform: translateY(-1px);
}

.checkNumberSubmit:active {
  transform: translateY(0);
}

.check-message {
  display: none;
  min-height: 40px;
  margin-top: 2px;
  font-size: 18px;
  line-height: 1.35;
}

.check-message.is-visible {
  display: block;
}

.check-message img {
  display: block;
  width: 72px;
  height: 72px;
  margin: 0 auto 8px;
  object-fit: contain;
}

.check-message.valid-number {
  color: #3d8f00;
}

.check-message.invalid-number {
  color: #e00000;
}

.check-message.no-message {
  color: #111;
}

.information {
  border-top: 1px solid rgba(20, 143, 125, .42);
  padding-top: 27px;
  padding-bottom: 0;
}

.info-block {
  margin-bottom: 52px;
}

.info-block h2 {
  margin: 0 0 6px;
  color: var(--green);
  font-size: 21px;
  line-height: 1.25;
}

.info-block h2 span {
  font-size: 28px;
  vertical-align: -1px;
}

.info-block p {
  margin: 0;
  font-size: 19px;
  line-height: 1.55;
}

.support-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: -22px;
}

.support-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 300px;
  padding: 10px 22px;
  border-radius: 999px;
  color: #fff;
  background: var(--bright-green);
  box-shadow: 0 5px 14px rgba(60, 152, 22, .18);
  font-size: 16px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  transition: transform .18s ease, filter .18s ease;
}

.support-button:hover {
  filter: brightness(.94);
  transform: translateY(-1px);
}

.support-button svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.support-illustration {
  display: block;
  width: 180px;
  height: 114px;
  margin-top: -1px;
  object-fit: cover;
  object-position: center top;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .hero {
    min-height: 250px;
    padding: 26px 16px;
  }

  .hero img {
    width: min(534px, 94vw);
  }

  .content-width {
    width: min(100% - 30px, 620px);
  }

  .intro {
    padding-top: 24px;
  }

  .intro h2 {
    font-size: 23px;
  }

  .intro p {
    font-size: 17px;
    line-height: 1.48;
  }

  .verification {
    min-height: 650px;
    background-size: auto 56%;
  }

  .warning-icon {
    height: 55px;
    font-size: 51px;
  }

  .trust-notice {
    font-size: clamp(17px, 5vw, 23px);
  }

  .verification h2 {
    font-size: 32px;
  }

  .instruction {
    font-size: 17px;
  }

  .example {
    font-size: 15px;
  }

  .checkNumberSubmit {
    width: 100%;
  }

  .information {
    padding-top: 24px;
  }

  .info-block {
    margin-bottom: 40px;
  }

  .info-block h2 {
    font-size: 18px;
  }

  .info-block p {
    font-size: 16px;
    line-height: 1.52;
  }

  .support-button {
    min-width: 0;
    width: min(100%, 330px);
    font-size: 14px;
  }
}

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