:root {
  --red: #D1093A;
  --ink: #1F2329;
  --muted: #626A74;
  --paper: #FFFFFF;
  --soft: #F4F5F7;
  --line: rgba(31, 35, 41, 0.14);
  --max: 1180px;
  --sans: "IBM Plex Sans", Arial, sans-serif;
  --serif: "DM Serif Display", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

.shell {
  width: min(calc(100% - 64px), var(--max));
  margin: 0 auto;
}

.site-header {
  background: var(--paper);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 22px 0;
}

.brand {
  font-family: var(--serif);
  font-size: 1.6rem;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 1.6rem;
  font-size: 0.92rem;
}

nav a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

nav a:hover,
nav a:focus-visible {
  border-color: var(--red);
}

.section {
  padding: clamp(78px, 8.5vw, 122px) 0;
}

.section-white {
  background: var(--paper);
}

.section-soft {
  background: var(--soft);
}

.kicker {
  margin: 0 0 1rem;
  color: var(--red);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.7rem, 6.6vw, 6.2rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.025em;
}

.lead {
  margin: 2.1rem 0 0;
  font-size: clamp(1.28rem, 2vw, 1.72rem);
  line-height: 1.42;
}

.intro-copy {
  margin-top: clamp(46px, 5vw, 68px);
  font-size: clamp(1.03rem, 1.2vw, 1.16rem);
}

.intro-copy p {
  margin: 0;
}

.intro-copy p + p {
  margin-top: 1.35em;
}

.question-list {
  border-top: 1px solid var(--line);
}

.question-list p {
  margin: 0;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--serif);
  font-size: clamp(2rem, 3.6vw, 3.35rem);
  font-weight: 400;
  line-height: 1.1;
}

.practice-copy {
  margin-top: clamp(44px, 5vw, 66px);
  font-size: clamp(1.05rem, 1.32vw, 1.2rem);
}

.practice-copy p {
  margin: 0;
}

.conclusion {
  margin-top: 1.7rem !important;
  font-size: 1.08em;
  font-weight: 600;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 42px;
}

blockquote {
  margin: 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

blockquote p {
  margin: 0 0 1.6rem;
  font-size: clamp(1.04rem, 1.28vw, 1.18rem);
  line-height: 1.5;
}

blockquote cite {
  display: block;
  color: var(--muted);
  font-style: normal;
  font-size: 0.9rem;
  line-height: 1.45;
}

.background .shell {
  font-size: clamp(1.08rem, 1.38vw, 1.24rem);
}

.background p {
  margin: 0;
}

.background p + p {
  margin-top: 1.4em;
}

.principle {
  color: var(--red);
  font-weight: 600;
}

.details h2,
.contact h2 {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(1.55rem, 2.1vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.details p {
  margin: 1rem 0 0;
  font-size: clamp(1.05rem, 1.3vw, 1.18rem);
}

.contact p {
  margin: 1rem 0 0;
  font-size: 1.08rem;
}

.mail-link {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  margin-top: 1.45rem;
  padding: 0.75rem 1.25rem;
  border: 1.5px solid var(--red);
  border-radius: 999px;
  color: var(--red);
  font-weight: 600;
  text-decoration: none;
}

.mail-link:hover,
.mail-link:focus-visible {
  color: #FFFFFF;
  background: var(--red);
}

footer {
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 28px 0 36px;
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-inner p {
  margin: 0;
}

@media (max-width: 850px) {
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 17px;
  }

  .shell {
    width: calc(100% - 40px);
  }

  .header-inner {
    display: block;
    padding: 18px 0;
  }

  nav {
    margin-top: 10px;
    gap: 1rem;
    font-size: 0.86rem;
  }

  .section {
    padding: 66px 0;
  }

  h1 {
    font-size: clamp(3rem, 13.5vw, 4.5rem);
  }

  .question-list p {
    padding: 17px 0;
  }

  .footer-inner {
    display: block;
  }

  .footer-inner a {
    display: inline-block;
    margin-top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}