:root {
  --ink: #12161c;
  --ink-2: #1a2028;
  --paper: #f4efe6;
  --teal: #1a8a7a;
  --teal-2: #14786a;
  --tg: #2aabee;
  --tg-2: #1e96d1;
  --ember: #e8a87c;
  --mute: #9aa3ad;
  --line: rgba(244, 239, 230, 0.12);
  --in: #182533;
  --out: #2b5278;
  --sheet: #0e1621;
  --radius: 1.25rem;
  --font: "IBM Plex Sans", "Segoe UI", sans-serif;
  --display: "Bricolage Grotesque", "IBM Plex Sans", sans-serif;
  --pad: clamp(1.1rem, 4vw, 2rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--paper);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(26, 138, 122, 0.18), transparent 55%),
    radial-gradient(900px 420px at 110% 8%, rgba(232, 168, 124, 0.12), transparent 50%),
    var(--ink);
  line-height: 1.55;
  padding-bottom: calc(5.25rem + env(safe-area-inset-bottom));
}

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

a {
  color: inherit;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  background: var(--paper);
  color: var(--ink);
  padding: 0.5rem 0.8rem;
  z-index: 20;
}

.skip:focus {
  top: 0.75rem;
}

.wrap {
  width: min(1120px, calc(100% - 2 * var(--pad)));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--ink) 82%, transparent);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--display);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.03em;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: cover;
  background: #12161c;
  flex-shrink: 0;
}

.nav {
  display: none;
  gap: 1.25rem;
  margin-left: auto;
  font-size: 0.92rem;
  color: var(--mute);
}

.nav a {
  text-decoration: none;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--paper);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.75rem;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn:focus-visible,
.nav a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 3px;
}

.header-cta {
  display: none;
  min-height: 2.4rem;
  padding: 0.45rem 0.9rem;
  font-size: 0.88rem;
  margin-left: auto;
}

.btn-primary,
.header-cta {
  background: var(--tg);
  color: #fff;
}

.btn-primary:hover,
.header-cta:hover {
  background: var(--tg-2);
}

.btn-primary::before,
.header-cta::before {
  content: "";
  width: 1.2em;
  height: 1.2em;
  flex-shrink: 0;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M11.944 0A12 12 0 0 0 0 12a12 12 0 0 0 12 12 12 12 0 0 0 12-12A12 12 0 0 0 12 0a12 12 0 0 0-.056 0zm4.962 7.224c.1-.002.321.023.465.14a.506.506 0 0 1 .171.325c.016.093.036.306.02.472-.18 1.898-.962 6.502-1.36 8.627-.168.9-.499 1.201-.82 1.23-.696.065-1.225-.46-1.9-.902-1.056-.693-1.653-1.124-2.678-1.8-1.185-.78-.417-1.21.258-1.91.177-.184 3.247-2.977 3.307-3.23.007-.032.014-.15-.056-.212s-.174-.041-.249-.024c-.106.024-1.793 1.14-5.061 3.345-.48.33-.913.49-1.302.48-.428-.008-1.252-.241-1.865-.44-.752-.245-1.349-.374-1.297-.789.027-.216.325-.437.893-.663 3.498-1.524 5.83-2.529 6.998-3.014 3.332-1.386 4.025-1.627 4.476-1.635z'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M11.944 0A12 12 0 0 0 0 12a12 12 0 0 0 12 12 12 12 0 0 0 12-12A12 12 0 0 0 12 0a12 12 0 0 0-.056 0zm4.962 7.224c.1-.002.321.023.465.14a.506.506 0 0 1 .171.325c.016.093.036.306.02.472-.18 1.898-.962 6.502-1.36 8.627-.168.9-.499 1.201-.82 1.23-.696.065-1.225-.46-1.9-.902-1.056-.693-1.653-1.124-2.678-1.8-1.185-.78-.417-1.21.258-1.91.177-.184 3.247-2.977 3.307-3.23.007-.032.014-.15-.056-.212s-.174-.041-.249-.024c-.106.024-1.793 1.14-5.061 3.345-.48.33-.913.49-1.302.48-.428-.008-1.252-.241-1.865-.44-.752-.245-1.349-.374-1.297-.789.027-.216.325-.437.893-.663 3.498-1.524 5.83-2.529 6.998-3.014 3.332-1.386 4.025-1.627 4.476-1.635z'/%3E%3C/svg%3E") center / contain no-repeat;
}

.btn-ghost {
  border-color: var(--line);
  color: var(--paper);
}

.btn-lg {
  min-height: 3.15rem;
  padding-inline: 1.4rem;
  font-size: 1.05rem;
}

.hero {
  padding: 2.2rem 0 3.2rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--ember);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: var(--display);
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin: 0;
}

h1 {
  font-size: clamp(2.3rem, 8vw, 4.4rem);
  font-weight: 800;
  max-width: 11ch;
}

h2 {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-weight: 700;
}

h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

.lead {
  margin: 1rem 0 1.4rem;
  color: color-mix(in srgb, var(--paper) 78%, var(--mute));
  font-size: 1.08rem;
  max-width: 36ch;
}

.hero-actions {
  display: none;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 1.3rem 0 0;
  list-style: none;
}

.pills li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  color: var(--mute);
}

.stage {
  margin: 0;
}

.sheet {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  overflow: hidden;
  height: 26rem;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.sheet-bar {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.75rem;
  background: #17212b;
}

.tg-back {
  width: 0.55rem;
  height: 0.55rem;
  border-left: 2px solid #6ab3f3;
  border-bottom: 2px solid #6ab3f3;
  transform: rotate(45deg);
  margin: 0 0.35rem 0 0.15rem;
  flex-shrink: 0;
}

.tg-avatar {
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
  background: #12161c;
}

.sheet-who {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.sheet-who strong {
  font-size: 0.95rem;
}

.sheet-who span {
  color: #6ab3f3;
  font-size: 0.75rem;
}

.thread {
  flex: 1;
  min-height: 0;
  padding: 0.75rem 0.7rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: #0e1621;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--paper) 25%, transparent) transparent;
}

.bubble {
  max-width: 78%;
  padding: 0.4rem 0.55rem 0.28rem 0.65rem;
  border-radius: 0.75rem;
  font-size: 0.94rem;
  line-height: 1.35;
  animation: rise 0.32s ease both;
}

.bubble::after {
  content: "";
  display: table;
  clear: both;
}

.bubble p {
  margin: 0;
  padding-right: 3.1rem;
}

.bubble time {
  float: right;
  margin: 0.15rem 0 0 0.4rem;
  font-size: 0.68rem;
  color: #8da4b8;
  line-height: 1;
}

.bubble.them {
  align-self: flex-start;
  background: var(--in);
  border-top-left-radius: 0.25rem;
}

.bubble.me {
  align-self: flex-end;
  background: var(--out);
  border-top-right-radius: 0.25rem;
}

.bubble.me time {
  color: #90c8f6;
}

.bubble.me time::after {
  content: " ✓✓";
  letter-spacing: -0.18em;
  font-size: 0.78em;
}

.bubble.system {
  align-self: center;
  max-width: 90%;
  text-align: center;
  background: rgba(24, 37, 51, 0.92);
  color: #b5c4d1;
  font-size: 0.78rem;
  border-radius: 0.9rem;
  padding: 0.35rem 0.7rem;
  line-height: 1.35;
}

.bubble.system p {
  padding-right: 0;
}

.typing {
  display: flex;
  gap: 0.28rem;
  width: fit-content;
  padding: 0.7rem 0.85rem;
}

.typing i {
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 50%;
  background: var(--mute);
  animation: blink 1s infinite;
}

.typing i:nth-child(2) {
  animation-delay: 0.15s;
}

.typing i:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes blink {
  0%,
  80%,
  100% {
    opacity: 0.25;
  }
  40% {
    opacity: 1;
  }
}

.stage figcaption {
  margin-top: 0.8rem;
  color: var(--mute);
  font-size: 0.88rem;
}

.how,
.why,
.safe,
.faq,
.final {
  padding: 3.4rem 0;
}

.how {
  background: color-mix(in srgb, var(--ink-2) 70%, transparent);
  border-block: 1px solid var(--line);
}

.steps {
  list-style: none;
  padding: 0;
  margin: 1.8rem 0 0;
  display: grid;
  gap: 1rem;
}

.steps li {
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem 1.2rem 1.25rem;
}

.steps h3 {
  margin-bottom: 0.4rem;
}

.steps p,
.why p,
.safe p,
.faq p {
  margin: 0;
  color: color-mix(in srgb, var(--paper) 76%, var(--mute));
}

.why-grid {
  margin-top: 1.6rem;
  display: grid;
  gap: 1rem;
}

.why-grid article {
  padding: 1.2rem;
  border-top: 2px solid var(--teal);
}

.safe-grid {
  display: grid;
  gap: 1.4rem;
}

.safe .btn {
  margin-top: 1.1rem;
}

.safe ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.safe li {
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
}

.faq-list {
  margin-top: 1.4rem;
  display: grid;
  gap: 0.6rem;
}

details {
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  padding: 0.9rem 1rem;
  background: color-mix(in srgb, var(--ink-2) 50%, transparent);
}

summary {
  cursor: pointer;
  font-weight: 600;
}

details p {
  margin-top: 0.6rem;
}

.final {
  text-align: center;
}

.final-inner {
  padding: 2.4rem 1rem 1.4rem;
}

.final p {
  color: var(--mute);
  margin: 0.8rem 0 1.3rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 1.8rem;
  color: var(--mute);
  font-size: 0.88rem;
}

.footer-inner {
  display: grid;
  gap: 0.7rem;
}

.footer-inner a {
  color: var(--paper);
}

.site-footer .brand-mark {
  width: 32px;
  height: 32px;
}

.dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.7rem var(--pad) calc(0.7rem + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--ink) 90%, transparent);
  border-top: 1px solid var(--line);
  z-index: 11;
}

.dock .btn {
  width: 100%;
}

@media (min-width: 720px) {
  .nav {
    display: flex;
  }

  .header-cta {
    margin-left: 0;
  }

  .header-inner {
    gap: 1.5rem;
  }

  .steps,
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 980px) {
  body {
    padding-bottom: 0;
  }

  .header-cta {
    display: inline-flex;
  }

  .hero-actions {
    display: flex;
  }

  .dock {
    display: none;
  }

  .hero {
    padding: 3.4rem 0 4.4rem;
  }

  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 3rem;
  }

  .sheet {
    height: 32rem;
  }

  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

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

  .bubble,
  .typing i {
    animation: none !important;
  }
}