:root {
  --ink: #14201c;
  --ink-soft: #3a4a44;
  --paper: #f3efe6;
  --paper-deep: #e7e0d2;
  --teal: #0f7a6b;
  --teal-deep: #0a554b;
  --amber: #d97706;
  --line: rgba(20, 32, 28, 0.12);
  --shadow: 0 24px 60px rgba(20, 32, 28, 0.18);
  --font-display: "Unbounded", sans-serif;
  --font-body: "Manrope", sans-serif;
  --radius: 18px;
  --max: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.55;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(15, 122, 107, 0.14), transparent 60%),
    radial-gradient(900px 420px at 0% 20%, rgba(217, 119, 6, 0.08), transparent 55%),
    linear-gradient(180deg, #f7f3eb 0%, var(--paper) 40%, #efe9dc 100%);
  background-attachment: fixed;
}

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

a {
  color: var(--teal-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

code {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.92em;
  background: rgba(15, 122, 107, 0.1);
  padding: 0.1em 0.35em;
  border-radius: 6px;
}

.top {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem clamp(1rem, 4vw, 2.5rem);
  backdrop-filter: blur(12px);
  background: rgba(243, 239, 230, 0.82);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 1.25rem;
}

.nav a,
.nav-cta {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-cta {
  color: var(--teal-deep);
}

.hero {
  min-height: calc(100vh - 64px);
  display: grid;
  grid-template-rows: auto 1fr;
  align-content: start;
  position: relative;
  overflow: hidden;
}

.hero-copy {
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: clamp(2rem, 6vh, 4rem) clamp(1rem, 4vw, 2.5rem) 1.5rem;
  animation: rise 0.8s ease both;
}

.brand-hero {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--teal-deep);
}

.hero h1 {
  margin: 0;
  max-width: 16ch;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4.4vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  font-weight: 500;
}

.lead {
  margin: 1rem 0 0;
  max-width: 42ch;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.7rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.98rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--teal);
  color: #f7fffc;
  box-shadow: 0 10px 24px rgba(15, 122, 107, 0.28);
}

.btn-primary:hover {
  background: var(--teal-deep);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.hero-visual {
  position: relative;
  min-height: 42vh;
  margin-top: auto;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--paper) 0%, transparent 28%);
  z-index: 1;
  pointer-events: none;
}

.hero-visual img {
  width: 100%;
  height: min(58vh, 620px);
  object-fit: cover;
  object-position: center 35%;
  animation: fade-in 1.1s ease both 0.15s;
}

.section {
  padding: clamp(3.5rem, 8vh, 6rem) 0;
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
}

.section h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
  font-weight: 700;
}

.section-lead {
  margin: 0.85rem 0 0;
  max-width: 52ch;
  color: var(--ink-soft);
}

.section-about {
  background:
    linear-gradient(90deg, rgba(15, 122, 107, 0.05), transparent 40%),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 11px,
      rgba(20, 32, 28, 0.03) 11px,
      rgba(20, 32, 28, 0.03) 12px
    );
}

.feature-list {
  list-style: none;
  margin: 2.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.feature-list li {
  display: grid;
  gap: 0.35rem;
  padding-left: 1.1rem;
  border-left: 3px solid var(--teal);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.feature-list li.is-visible {
  opacity: 1;
  transform: none;
}

.feature-list strong {
  font-size: 1.08rem;
}

.feature-list span {
  color: var(--ink-soft);
}

.compat {
  margin: 2.2rem 0 0;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  max-width: 60ch;
}

.section-howto {
  background: linear-gradient(180deg, rgba(20, 32, 28, 0.94), #0f1a16);
  color: #edf5f2;
}

.section-howto .section-lead,
.section-howto p {
  color: rgba(237, 245, 242, 0.78);
}

.section-howto code {
  background: rgba(255, 255, 255, 0.1);
  color: #d7fff5;
}

.steps {
  list-style: none;
  margin: 2.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.6rem;
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem 1.25rem;
  align-items: start;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid rgba(237, 245, 242, 0.12);
}

.steps li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.step-num {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: #7fd9c5;
  letter-spacing: 0.04em;
}

.steps h3 {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 700;
}

.steps p {
  margin: 0.4rem 0 0;
}

.who-grid {
  margin-top: 2rem;
  display: grid;
  gap: 1.25rem;
}

.who-grid p {
  margin: 0;
  padding: 0;
  color: var(--ink-soft);
}

.who-grid strong {
  display: block;
  color: var(--ink);
  margin-bottom: 0.25rem;
  font-size: 1.05rem;
}

.section-contact {
  background:
    radial-gradient(700px 280px at 100% 0%, rgba(15, 122, 107, 0.12), transparent 60%),
    linear-gradient(180deg, transparent, rgba(231, 224, 210, 0.7));
}

.contact-layout {
  display: grid;
  gap: 2rem;
}

.contact-panel {
  display: grid;
  gap: 1rem;
}

.contact-direct {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.contact-direct a {
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
}

.contact-form,
.chat-box {
  display: grid;
  gap: 0.95rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 252, 246, 0.72);
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.92rem;
}

.contact-form input,
.contact-form textarea,
.chat-compose input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
  font: inherit;
  color: var(--ink);
  background: #fffdf8;
}

.contact-form input:focus,
.contact-form textarea:focus,
.chat-compose input:focus {
  outline: 2px solid rgba(15, 122, 107, 0.35);
  border-color: var(--teal);
}

.contact-form .btn,
.chat-compose .btn {
  justify-self: start;
  border: 0;
}

.form-note {
  margin: 0;
  color: var(--teal-deep);
  font-weight: 600;
}

.form-note-error {
  color: #9f1239;
}

.contact-form .btn:disabled,
.chat-compose .btn:disabled {
  opacity: 0.65;
  cursor: wait;
  transform: none;
}

.chat-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
}

.chat-head span {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.chat-messages {
  display: grid;
  gap: 0.7rem;
  max-height: 320px;
  overflow: auto;
  padding: 0.2rem;
}

.chat-bubble {
  max-width: 88%;
  padding: 0.7rem 0.85rem;
  border-radius: 14px;
}

.chat-bubble p {
  margin: 0.25rem 0 0;
  white-space: pre-wrap;
}

.chat-meta {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.chat-bubble-visitor {
  justify-self: end;
  background: rgba(15, 122, 107, 0.14);
}

.chat-bubble-support {
  justify-self: start;
  background: #fff;
  border: 1px solid var(--line);
}

.chat-compose {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.65rem;
}

.chat-hint {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.footer {
  padding: 1.5rem clamp(1rem, 4vw, 2.5rem) 2rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.92rem;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    grid-template-rows: 1fr;
    align-items: stretch;
  }

  .hero-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-right: 1rem;
  }

  .hero-visual {
    min-height: calc(100vh - 64px);
    margin: 0;
  }

  .hero-visual::before {
    background: linear-gradient(90deg, var(--paper) 0%, transparent 34%);
  }

  .hero-visual img {
    height: 100%;
    min-height: calc(100vh - 64px);
  }

  .feature-list {
    grid-template-columns: 1fr 1fr;
    gap: 1.8rem 2rem;
  }

  .who-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }

  .contact-layout {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }
}

@media (max-width: 720px) {
  .nav {
    display: none;
  }
}