* {
  box-sizing: border-box;
}

:root {
  --red: #ff3d57;
  --red-soft: rgba(255, 61, 87, 0.12);
  --red-line: rgba(255, 61, 87, 0.5);
  --teal: #00ffcc;
  --teal-soft: rgba(0, 255, 204, 0.1);
  --teal-line: rgba(0, 255, 204, 0.5);
  --text-dim: rgba(255, 255, 255, 0.6);
  --text-faint: rgba(255, 255, 255, 0.4);
  --card: rgba(255, 255, 255, 0.05);
  --card-line: rgba(255, 255, 255, 0.12);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(255, 61, 87, 0.18), transparent 70%),
    #0d0d0d;
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

a {
  color: inherit;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==== */
/* NAV  */
/* ==== */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
}

.brand {
  font-size: 20px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
}

.brand .red {
  font-weight: 700;
  color: var(--red);
}

.brand .shoes {
  font-weight: 100;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  letter-spacing: 0.04em;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
}

.nav-links a:hover {
  color: #fff;
}

.nav-links .nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem 1.1rem;
  color: var(--red);
  border: 1px solid var(--red-line);
  border-radius: 8px;
  font-weight: 500;
}

@media (max-width: 640px) {
  .nav-links .hide-sm {
    display: none;
  }
}

/* ==== */
/* HERO */
/* ==== */
.hero {
  text-align: center;
  padding: 64px 24px 56px;
}

.hero-title {
  font-size: clamp(36px, 8vw, 68px);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 1rem;
  line-height: 1.1;
}

.hero-title .red {
  font-weight: 700;
  color: var(--red);
}

.hero-title .shoes {
  font-weight: 100;
}

.hero-tagline {
  font-size: clamp(18px, 3.5vw, 26px);
  color: var(--red);
  font-weight: 600;
  margin: 0 0 1rem;
}

.hero-sub {
  max-width: 600px;
  margin: 0 auto 2.5rem;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.6;
}

/* ======= */
/* BUTTONS */
/* ======= */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.btn-row.left {
  justify-content: flex-start;
}

.launch-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.95rem 2rem;
  background: var(--red);
  color: #fff;
  border: 1px solid var(--red);
  border-radius: 8px;
  font-size: clamp(15px, 2.6vw, 17px);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  font-family: inherit;
}

.launch-btn.secondary {
  background: transparent;
  color: var(--red);
  border-color: var(--red-line);
}

.teal .launch-btn {
  background: var(--teal);
  border-color: var(--teal);
  color: #000;
}

.teal .launch-btn.secondary {
  background: transparent;
  color: var(--teal);
  border-color: var(--teal-line);
}

/* ======== */
/* SECTIONS */
/* ======== */
section {
  padding: 56px 0;
}

section + section {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.section-title {
  text-align: center;
  font-size: clamp(24px, 4vw, 32px);
  letter-spacing: 0.04em;
  margin: 0 0 0.75rem;
}

.section-sub {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 2.5rem;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.6;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 12px;
}

.teal .eyebrow {
  color: var(--teal);
}

/* ================ */
/* HEARTREK FEATURE */
/* ================ */
.heartrek {
  position: relative;
  border-top: none;
  padding-top: 0;
}

@media (max-width: 640px) {
  .heartrek .heartrek-panel {
    padding: 36px 20px;
  }
}

.heartrek-panel {
  background:
    linear-gradient(rgba(0, 0, 0, 0.35), rgba(0, 0, 0, 0.75)),
    url("img/heartrek-bg.jpg") center 40% / cover no-repeat;
  border: 1px solid rgba(0, 255, 204, 0.25);
  border-radius: 20px;
  padding: 48px 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

@media (min-width: 860px) {
  .heartrek .heartrek-panel {
    grid-template-columns: 1.1fr 1fr;
    padding: 56px 48px;
  }
}

.app-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.app-icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  display: block;
  flex-shrink: 0;
}

.app-name {
  font-size: clamp(28px, 5vw, 40px);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0;
  line-height: 1.1;
}

.app-name .hear {
  font-weight: 100;
}

.app-name .trek {
  font-weight: 700;
}

.app-tagline {
  font-size: clamp(17px, 3vw, 22px);
  color: var(--teal);
  font-weight: 600;
  margin: 0 0 1rem;
}

.app-desc {
  color: rgba(255, 255, 255, 0.75);
  font-size: 16px;
  line-height: 1.6;
  margin: 0 0 1.5rem;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  display: grid;
  gap: 10px;
}

.check-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 15px;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.8);
}

.check-list i {
  color: var(--teal);
  font-size: 20px;
  flex-shrink: 0;
}

.check-list.red i {
  color: var(--red);
}

.shots {
  display: flex;
  justify-content: center;
  gap: 14px;
}

.shot {
  width: 30%;
  max-width: 170px;
  height: auto;
  aspect-ratio: 540 / 1200;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 16px;
  display: block;
}

.shot.mid {
  transform: translateY(-18px);
}

@media (max-width: 859px) {
  .btn-row.left {
    justify-content: center;
  }
}

.heartrek-panel > *,
.split > * {
  min-width: 0;
}

@media (max-width: 480px) {
  .btn-row .launch-btn {
    padding: 0.8rem 1.1rem;
    font-size: 14px;
    letter-spacing: 0.04em;
    text-align: center;
  }
}

/* ========= */
/* LHR PRO   */
/* ========= */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

@media (min-width: 860px) {
  .split {
    grid-template-columns: 1fr 1.1fr;
  }
}

.lhr-img {
  width: 100%;
  max-width: 380px;
  height: auto;
  display: block;
  margin: 0 auto;
}

.lhr-name {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin: 0;
}

.lhr-tagline {
  font-size: 17px;
  color: var(--red);
  font-weight: 600;
  margin: 0 0 1rem;
}

/* ===== */
/* CARDS */
/* ===== */
.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

@media (min-width: 640px) {
  .grid.two,
  .grid.three {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .grid.three {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--card);
  border: 1px solid var(--card-line);
  border-radius: 12px;
  padding: 28px 22px;
}

.card-icon {
  font-size: 30px;
  color: var(--red);
  margin-bottom: 14px;
  display: block;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 8px;
}

.card-desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-dim);
  margin: 0;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--red);
  text-decoration: none;
}

.card.big {
  padding: 36px 28px;
}

.card.big .card-title {
  font-size: 20px;
}

.card.big .card-desc {
  font-size: 15px;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--red-soft);
  border: 1px solid rgba(255, 61, 87, 0.3);
  color: rgba(255, 255, 255, 0.85);
}

/* ===== */
/* STEPS */
/* ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.step {
  text-align: center;
}

.step-icon-wrap {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--red-soft);
  border: 1px solid rgba(255, 61, 87, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-icon-wrap i {
  font-size: 26px;
  color: var(--red);
}

.step-title {
  font-size: 15px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 6px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.5;
  margin: 0;
}

/* ======= */
/* CONTACT */
/* ======= */
.contact-box {
  max-width: 640px;
  margin: 0 auto;
}

.contact-email {
  text-align: center;
  margin: 0 0 28px;
  font-size: 16px;
  color: var(--text-dim);
}

.contact-email a {
  color: var(--red);
  font-weight: 500;
  text-decoration: none;
}

.form {
  display: grid;
  gap: 14px;
}

.form-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

@media (min-width: 640px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form input,
.form textarea {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--card-line);
  border-radius: 8px;
  padding: 14px 16px;
  color: #fff;
  font: inherit;
  font-size: 15px;
}

.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--red-line);
}

.form textarea {
  min-height: 160px;
  resize: vertical;
}

.form .launch-btn {
  justify-self: center;
}

.form-status {
  text-align: center;
  font-size: 15px;
  color: var(--text-dim);
  min-height: 1.2em;
  margin: 0;
}

/* ===== */
/* PROSE */
/* ===== */
.prose {
  max-width: 760px;
  margin: 0 auto;
  line-height: 1.65;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.78);
}

.prose h2 {
  color: #fff;
  font-size: 20px;
  letter-spacing: 0.02em;
  margin: 2.2rem 0 0.6rem;
}

.prose a {
  color: var(--red);
}

.prose .meta {
  color: var(--text-faint);
  font-size: 14px;
}

/* ====== */
/* FOOTER */
/* ====== */
footer {
  text-align: center;
  padding: 32px 24px 48px;
  font-size: 13px;
  color: var(--text-faint);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

footer a {
  color: var(--text-dim);
}