:root {
  color-scheme: dark;
  --bg: #08111c;
  --bg-soft: #0d1926;
  --panel: #111f2d;
  --panel-2: #182a3a;
  --panel-3: #20384e;
  --line: rgba(143, 164, 184, .16);
  --line-strong: rgba(143, 164, 184, .28);
  --text: #f3f7fb;
  --muted: #95a9bc;
  --muted-2: #6f8498;
  --blue: #5a9de0;
  --blue-2: #78c2ff;
  --green: #5bdd9a;
  --amber: #f1c86a;
  --danger: #ff6b7a;
  --shadow: 0 30px 90px rgba(0, 0, 0, .42);
  font-family: "Segoe UI", Inter, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(90, 157, 224, .16), transparent 34%),
    linear-gradient(315deg, rgba(91, 221, 154, .08), transparent 30%),
    var(--bg);
  color: var(--text);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: .42;
  background-image:
    linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(to bottom, #000, transparent 72%);
}

a {
  color: inherit;
  text-decoration: none;
}

p,
h1,
h2,
h3 {
  margin: 0;
}

.page-shell {
  width: min(100%, 1440px);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  height: 70px;
  margin: 16px clamp(18px, 4vw, 48px) 0;
  padding: 0 clamp(20px, 4vw, 42px);
  border: 1px solid rgba(72, 98, 123, .5);
  border-radius: 22px;
  background: rgba(8, 17, 28, .8);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .28);
  backdrop-filter: blur(22px);
}

.brand,
.nav,
.hero-actions,
footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-size: 19px;
  font-weight: 760;
  letter-spacing: 0;
}

.brand img {
  width: 40px;
  height: 40px;
  filter: brightness(1.22) drop-shadow(0 10px 24px rgba(0, 0, 0, .45));
}

.nav {
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
}

.nav a {
  transition: color .18s ease, transform .18s ease;
}

.nav a:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.top-download,
.primary,
.secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 720;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
}

.top-download,
.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), #407fbe);
  box-shadow: 0 18px 46px rgba(90, 157, 224, .26);
}

.top-download {
  padding: 0 22px;
  border-radius: 16px;
  font-weight: 700;
}

.primary {
  padding: 0 26px;
}

.secondary {
  padding: 0 24px;
  color: #dfeaf4;
  background: rgba(24, 42, 58, .74);
  border: 1px solid var(--line-strong);
}

.top-download:hover,
.primary:hover,
.secondary:hover {
  transform: translateY(-2px);
}

.primary:hover {
  box-shadow: 0 24px 58px rgba(90, 157, 224, .34);
}

.secondary:hover {
  border-color: rgba(120, 194, 255, .42);
  background: rgba(32, 56, 78, .82);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(520px, 640px);
  gap: clamp(36px, 6vw, 88px);
  align-items: center;
  min-height: max(640px, calc(100vh - 190px));
  padding: clamp(44px, 5.5vw, 72px) clamp(22px, 5vw, 76px) 34px;
}

.hero-copy {
  max-width: 660px;
}

h1 {
  max-width: 720px;
  font-size: clamp(48px, 5.2vw, 72px);
  line-height: .98;
  letter-spacing: 0;
}

.hero-copy p {
  max-width: 590px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.56;
}

.hero-actions {
  gap: 14px;
  margin-top: 30px;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.hero-facts span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 13px;
  border: 1px solid rgba(120, 194, 255, .22);
  border-radius: 999px;
  color: #c8d8e7;
  background: rgba(17, 31, 45, .58);
  font-size: 12px;
  font-weight: 800;
}

.product-stage {
  position: relative;
}

.product-stage::before {
  position: absolute;
  inset: 10% -6% -8% 12%;
  content: "";
  border-radius: 38px;
  background: linear-gradient(135deg, rgba(90, 157, 224, .20), rgba(91, 221, 154, .07));
  filter: blur(44px);
  transform: translate3d(0, 0, 0);
}

.device-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(143, 164, 184, .20);
  border-radius: 22px;
  background: #08111c;
  box-shadow: var(--shadow);
  animation: float-panel 7s ease-in-out infinite;
}

.window-bar {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  height: 36px;
  padding: 13px 17px;
  background: #203149;
}

.window-bar span {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #94a7b9;
}

.app-preview {
  display: grid;
  grid-template-columns: 242px 1fr;
  min-height: 432px;
}

.chat-rail {
  padding: 16px;
  background: rgba(17, 31, 45, .96);
  border-right: 1px solid rgba(143, 164, 184, .14);
}

.search,
.composer {
  height: 42px;
  border-radius: 18px;
  background: #203244;
  color: var(--muted);
  padding: 12px 16px;
  font-size: 13px;
}

.chat {
  position: relative;
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
  padding: 11px;
  border-radius: 16px;
  color: #eaf3fb;
}

.chat.active {
  background: rgba(90, 157, 224, .17);
}

.avatar {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green), #45c982);
  color: #06150c;
  font-weight: 900;
}

.avatar.muted {
  background: linear-gradient(135deg, #a6b5c4, #6d7d91);
  color: #fff;
}

.avatar.small {
  width: 44px;
  height: 44px;
}

.chat strong,
.chat-head strong {
  display: block;
  font-size: 14px;
}

.chat p,
.chat-head p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.time {
  color: var(--muted);
  font-size: 12px;
}

.unread {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: var(--blue);
  font-size: 12px;
  font-weight: 800;
}

.mini-terminal {
  margin-top: 20px;
  padding: 14px;
  border: 1px solid rgba(91, 221, 154, .22);
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(91, 221, 154, .08), transparent),
    rgba(8, 17, 28, .52);
}

.mini-terminal span {
  display: block;
  color: var(--green);
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.mini-terminal code {
  display: block;
  margin-top: 8px;
  color: #d9f7e8;
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 12px;
}

.conversation {
  position: relative;
  min-width: 0;
  padding: 18px;
  background: #0b1522;
}

.chat-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(143, 164, 184, .16);
}

.secure-pill {
  margin-left: auto;
  padding: 8px 12px;
  border: 1px solid rgba(91, 221, 154, .34);
  border-radius: 999px;
  color: #bff8db;
  background: rgba(91, 221, 154, .08);
  font-size: 12px;
  font-weight: 850;
}

.bubble {
  max-width: 72%;
  margin-top: 24px;
  padding: 14px 16px;
  border-radius: 18px;
  color: #f0f6fb;
  font-size: 14px;
  line-height: 1.48;
  animation: message-in .7s ease both;
}

.bubble.left {
  background: #172638;
  border-bottom-left-radius: 7px;
}

.bubble.right {
  margin-left: auto;
  background: linear-gradient(135deg, #3c74aa, #356497);
  border-bottom-right-radius: 7px;
  animation-delay: .12s;
}

.call-card {
  width: fit-content;
  margin: 24px auto 0;
  padding: 10px 22px;
  border-radius: 18px;
  background: #203244;
  color: #e2effb;
  font-size: 13px;
  font-weight: 850;
}

.composer {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.composer strong {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 12px;
  background: var(--blue);
  color: #fff;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0 clamp(22px, 5vw, 76px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--line);
  box-shadow: 0 26px 70px rgba(0, 0, 0, .22);
}

.proof-strip article {
  padding: 22px;
  background: rgba(13, 25, 38, .88);
}

.proof-strip span {
  color: var(--blue-2);
  font-size: 12px;
  font-weight: 900;
}

.proof-strip strong {
  display: block;
  margin-top: 14px;
  font-size: 16px;
}

.proof-strip p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.split-section,
.modes-section,
.faq-section,
.architecture-section,
.limits-section {
  padding: clamp(78px, 10vw, 128px) clamp(22px, 5vw, 76px);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(420px, 1fr);
  gap: clamp(34px, 6vw, 82px);
  align-items: center;
}

h2 {
  max-width: 720px;
  font-size: clamp(34px, 4.2vw, 56px);
  line-height: 1.05;
  letter-spacing: 0;
}

.split-section > div > p,
.section-head p {
  max-width: 660px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.62;
}

.signal-panel,
.mode-grid article,
.faq-list details {
  border: 1px solid var(--line);
  background: rgba(17, 31, 45, .72);
  box-shadow: 0 24px 70px rgba(0, 0, 0, .18);
}

.signal-panel {
  overflow: hidden;
  border-radius: 24px;
}

.signal-row {
  display: grid;
  grid-template-columns: 12px 138px 1fr;
  align-items: center;
  gap: 18px;
  padding: 22px 24px;
  border-bottom: 1px solid var(--line);
}

.signal-row:last-child {
  border-bottom: 0;
}

.signal-row span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 22px rgba(91, 221, 154, .55);
}

.signal-row strong {
  font-size: 15px;
}

.signal-row p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.section-head {
  max-width: 760px;
}

.section-head.wide {
  max-width: 940px;
}

.architecture-section {
  position: relative;
}

.architecture-section::before,
.limits-section::before {
  position: absolute;
  left: 50%;
  width: min(840px, 84vw);
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(120, 194, 255, .30), transparent);
  transform: translateX(-50%);
}

.architecture-section::before {
  top: 38px;
}

.limits-section::before {
  top: 42px;
}

.architecture-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 88px minmax(0, 1fr) 88px minmax(0, 1fr);
  align-items: stretch;
  gap: 0;
  margin-top: 38px;
}

.flow-node {
  position: relative;
  min-height: 286px;
  padding: 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(32, 56, 78, .82), rgba(13, 25, 38, .74)),
    rgba(17, 31, 45, .78);
  box-shadow: 0 30px 86px rgba(0, 0, 0, .23);
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.flow-node::after {
  position: absolute;
  inset: auto -40px -72px auto;
  width: 150px;
  height: 150px;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, rgba(120, 194, 255, .18), transparent 68%);
}

.flow-node:hover {
  transform: translateY(-4px);
  border-color: rgba(120, 194, 255, .34);
  box-shadow: 0 34px 100px rgba(0, 0, 0, .31);
}

.flow-node span,
.mode-grid span,
.proof-strip span {
  letter-spacing: .04em;
}

.flow-node span {
  color: var(--blue-2);
  font-size: 12px;
  font-weight: 950;
}

.flow-node h3 {
  margin-top: 24px;
  font-size: 23px;
}

.flow-node p {
  margin-top: 13px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.58;
}

.flow-node code {
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 24px;
  display: block;
  padding: 13px 14px;
  border: 1px solid rgba(143, 164, 184, .16);
  border-radius: 14px;
  color: #dff4ff;
  background: rgba(8, 17, 28, .52);
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 13px;
}

.relay-node {
  border-color: rgba(91, 221, 154, .26);
}

.relay-node span,
.relay-node code {
  color: #bff8db;
}

.flow-line {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 286px;
}

.flow-line::before {
  width: 100%;
  height: 2px;
  content: "";
  background: linear-gradient(90deg, rgba(120, 194, 255, .10), rgba(120, 194, 255, .65), rgba(91, 221, 154, .55));
  box-shadow: 0 0 24px rgba(120, 194, 255, .22);
}

.flow-line::after {
  position: absolute;
  right: 18px;
  width: 11px;
  height: 11px;
  content: "";
  border-top: 2px solid rgba(120, 194, 255, .86);
  border-right: 2px solid rgba(120, 194, 255, .86);
  transform: rotate(45deg);
}

.knowledge-grid,
.limits-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.knowledge-grid article,
.limits-grid article {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(32, 56, 78, .58), transparent 72%),
    rgba(17, 31, 45, .72);
  box-shadow: 0 24px 76px rgba(0, 0, 0, .18);
}

.knowledge-grid h3,
.limits-grid h3 {
  margin-top: 0;
  font-size: 22px;
}

.knowledge-grid ul {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.knowledge-grid li {
  position: relative;
  padding-left: 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.48;
}

.knowledge-grid li::before {
  position: absolute;
  left: 0;
  top: .58em;
  width: 7px;
  height: 7px;
  content: "";
  border-radius: 50%;
  background: var(--blue-2);
  box-shadow: 0 0 18px rgba(120, 194, 255, .42);
}

.knowledge-grid article:nth-child(2) li::before {
  background: var(--green);
  box-shadow: 0 0 18px rgba(91, 221, 154, .42);
}

.limits-grid p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.mode-grid article {
  min-height: 216px;
  padding: 26px;
  border-radius: 22px;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}

.mode-grid article:hover {
  transform: translateY(-4px);
  border-color: rgba(120, 194, 255, .34);
  background: rgba(24, 42, 58, .82);
}

.mode-grid span {
  color: var(--blue-2);
  font-size: 13px;
  font-weight: 900;
}

h3 {
  margin-top: 26px;
  font-size: 22px;
  line-height: 1.15;
}

.mode-grid p {
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.6;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 860px;
  margin-top: 32px;
}

.faq-list details {
  border-radius: 18px;
  overflow: hidden;
}

.faq-list summary {
  cursor: pointer;
  padding: 20px 22px;
  font-weight: 850;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  float: right;
  color: var(--blue-2);
  content: "+";
}

.faq-list details[open] summary::after {
  content: "-";
}

.faq-list details p {
  padding: 0 22px 20px;
  color: var(--muted);
  line-height: 1.6;
}

.faq-page {
  padding: clamp(40px, 5vw, 72px) clamp(22px, 5vw, 76px);
}

.faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 210px;
  gap: 34px;
  align-items: center;
  min-height: 280px;
  padding: clamp(32px, 5vw, 58px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(90, 157, 224, .16), transparent 44%),
    rgba(17, 31, 45, .76);
  box-shadow: var(--shadow);
}

.eyebrow {
  color: var(--blue-2);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.faq-hero h1 {
  margin-top: 14px;
  font-size: clamp(42px, 5vw, 66px);
}

.faq-hero p:not(.eyebrow) {
  max-width: 760px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.58;
}

.faq-hero img {
  width: 220px;
  height: 220px;
  object-fit: contain;
  filter: drop-shadow(0 24px 42px rgba(0, 0, 0, .42));
}

.faq-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  margin-top: 28px;
}

.faq-toc {
  position: sticky;
  top: 104px;
  display: grid;
  gap: 8px;
  align-self: start;
  height: fit-content;
  max-height: calc(100vh - 118px);
  overflow-y: auto;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(17, 31, 45, .62);
  scrollbar-color: rgba(120, 194, 255, .42) transparent;
  scrollbar-width: thin;
}

.faq-toc::-webkit-scrollbar {
  width: 6px;
}

.faq-toc::-webkit-scrollbar-track {
  background: transparent;
}

.faq-toc::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(120, 194, 255, .34);
}

.faq-toc a {
  padding: 12px 14px;
  border-radius: 12px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  transition: color .18s ease, background .18s ease;
}

.faq-toc a:hover {
  color: var(--text);
  background: rgba(90, 157, 224, .14);
}

.faq-articles {
  display: grid;
  gap: 18px;
}

.faq-articles article {
  scroll-margin-top: 96px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(17, 31, 45, .72);
}

.faq-articles span {
  color: var(--blue-2);
  font-size: 13px;
  font-weight: 900;
}

.faq-articles h2 {
  margin-top: 12px;
  font-size: clamp(26px, 3vw, 38px);
}

.faq-articles p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.66;
}

.faq-articles ul {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0 0 0 18px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.58;
}

.faq-articles li::marker {
  color: var(--blue-2);
}

.faq-articles strong {
  color: var(--text);
}

footer {
  justify-content: space-between;
  padding: 32px clamp(22px, 5vw, 76px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

footer a {
  color: var(--blue-2);
}

.reveal {
  animation: reveal-up .7s ease both;
}

.product-stage.reveal {
  animation-delay: .12s;
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float-panel {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes message-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

@media (max-width: 1060px) {
  .hero,
  .split-section,
  .faq-layout,
  .faq-hero {
    grid-template-columns: 1fr;
  }

  .faq-toc {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-height: none;
    overflow: visible;
  }

  .product-stage,
  .signal-panel {
    max-width: 720px;
  }

  .proof-strip,
  .mode-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .architecture-board {
    grid-template-columns: 1fr;
    gap: 14px;
    max-width: 720px;
  }

  .flow-line {
    min-height: 34px;
  }

  .flow-line::before {
    width: 2px;
    height: 34px;
  }

  .flow-line::after {
    right: auto;
    bottom: 2px;
    transform: rotate(135deg);
  }
}

@media (max-width: 720px) {
  .topbar {
    height: 66px;
    margin: 12px 16px 0;
    padding: 0 24px;
  }

  .nav,
  .top-download {
    display: none;
  }

  .brand img {
    width: 32px;
    height: 32px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
    min-height: auto;
    padding: 44px 24px 28px;
  }

  h1 {
    font-size: 34px;
    line-height: 1.06;
  }

  .hero-copy p {
    max-width: 100%;
    font-size: 16px;
    line-height: 1.55;
    overflow-wrap: break-word;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-facts {
    max-width: 320px;
  }

  .primary,
  .secondary {
    width: 100%;
  }

  .hero-copy,
  .hero-actions,
  .product-stage,
  .device-frame {
    width: 100%;
    max-width: 320px;
    min-width: 0;
  }

  .product-stage::before {
    display: none;
  }

  .app-preview {
    grid-template-columns: 1fr;
    min-height: 386px;
  }

  .chat-rail {
    display: none;
  }

  .device-frame {
    border-radius: 18px;
  }

  .conversation {
    width: 100%;
    max-width: 100%;
    min-height: 350px;
    overflow: hidden;
  }

  .chat-head {
    min-width: 0;
  }

  .secure-pill {
    display: none;
  }

  .bubble {
    max-width: 86%;
  }

  .bubble.right {
    margin-left: 14%;
  }

  .bubble.right {
    max-width: 78%;
  }

  .proof-strip,
  .mode-grid,
  .knowledge-grid,
  .limits-grid {
    grid-template-columns: 1fr;
  }

  .proof-strip {
    margin: 22px 24px 0;
  }

  .split-section,
  .modes-section,
  .faq-section,
  .faq-page,
  .architecture-section,
  .limits-section {
    padding: 74px 24px;
  }

  .faq-hero {
    min-height: auto;
    padding: 28px;
  }

  .faq-hero img {
    width: 120px;
    height: 120px;
  }

  .faq-toc {
    grid-template-columns: 1fr;
  }

  .flow-node {
    min-height: auto;
    padding: 22px;
  }

  .flow-node h3 {
    margin-top: 18px;
    font-size: 21px;
  }

  .flow-node code {
    position: static;
    margin-top: 18px;
  }

  .knowledge-grid article,
  .limits-grid article {
    padding: 22px;
  }

  .signal-row {
    grid-template-columns: 10px 1fr;
    align-items: start;
  }

  .signal-row p {
    grid-column: 2;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 28px 24px;
  }
}

@media (max-width: 420px) {
  h1 {
    font-size: 34px;
  }

  .hero,
  .split-section,
  .modes-section,
  .faq-section,
  .architecture-section,
  .limits-section {
    padding-left: 18px;
    padding-right: 18px;
  }

  .proof-strip {
    margin-left: 18px;
    margin-right: 18px;
  }
}