/* ==========================================================================
   纸飞机 · Telegram 下载站
   Design system / layout / responsive
   ========================================================================== */

:root {
  --blue: #229ed9;
  --blue-2: #2aabee;
  --blue-3: #63cdff;
  --blue-deep: #0e6f9f;
  --blue-ink: #08496b;
  --ink: #081a2a;
  --ink-2: #16364e;
  --muted: #5b7285;
  --muted-2: #7d93a5;
  --line: #e3eef7;
  --line-soft: #edf5fa;
  --bg: #f6fbfe;
  --white: #ffffff;
  --navy: #061a2b;
  --green: #22b07d;
  --radius-xl: 40px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --shadow-sm: 0 6px 22px rgba(15, 77, 111, 0.06);
  --shadow-md: 0 20px 50px -24px rgba(15, 77, 111, 0.22);
  --shadow-lg: 0 38px 90px -32px rgba(15, 77, 111, 0.32);
  --gradient: linear-gradient(135deg, #2aabee 0%, #229ed9 55%, #1687c4 100%);
  --gradient-text: linear-gradient(100deg, #0e86c8 0%, #2aabee 52%, #63cdff 100%);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "SF Pro Display", "Segoe UI Variable Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

::selection {
  background: rgba(42, 171, 238, 0.22);
  color: var(--ink);
}

h1, h2, h3, h4, p, dl, dd, ol, ul {
  margin: 0;
}

ol, ul {
  padding: 0;
  list-style: none;
}

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

img,
svg {
  display: block;
}

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

button,
input {
  font: inherit;
}

button {
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid rgba(34, 158, 217, 0.55);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin-inline: auto;
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 18px;
  height: 18px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 999;
  padding: 12px 18px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 0.2s;
}

.skip-link:focus {
  transform: none;
}

.text-gradient {
  color: #1a9cda;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding: 0 25px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.btn .icon {
  width: 18px;
  height: 18px;
}

.btn-primary {
  color: #fff;
  background: var(--gradient);
  box-shadow: 0 16px 34px -12px rgba(34, 158, 217, 0.62),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 25%, rgba(255, 255, 255, 0.28) 48%, transparent 70%);
  transform: translateX(-130%);
  transition: transform 0.65s var(--ease);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 44px -14px rgba(34, 158, 217, 0.72),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-primary:hover::after {
  transform: translateX(130%);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  color: var(--ink-2);
  background: rgba(255, 255, 255, 0.74);
  border-color: #d5e7f2;
  box-shadow: 0 10px 24px -18px rgba(15, 77, 111, 0.35);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  border-color: rgba(34, 158, 217, 0.45);
  background: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  color: var(--blue-deep);
  background: #fff;
  border-color: #cfe6f4;
}

.btn-outline:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
}

.btn-white {
  color: #086491;
  background: #fff;
  box-shadow: 0 18px 38px -16px rgba(1, 38, 61, 0.45);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 46px -18px rgba(1, 38, 61, 0.55);
}

.btn-glass {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.32);
  backdrop-filter: blur(10px);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.17);
  transform: translateY(-2px);
}

.btn-lg {
  height: 58px;
  padding: 0 30px;
  border-radius: 16px;
  font-size: 16px;
}

.btn-sm {
  height: 44px;
  padding: 0 20px;
  border-radius: 12px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Top bar + header
   ========================================================================== */

.topbar {
  position: relative;
  z-index: 101;
  background: linear-gradient(90deg, #061a2b 0%, #07263a 54%, #083a56 100%);
  color: #cbe9f8;
  font-size: 12.5px;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 38px;
}

.topbar-main,
.topbar-link-wrap {
  display: flex;
  align-items: center;
  gap: 9px;
}

.topbar-main {
  letter-spacing: 0.2px;
}

.topbar-dot {
  position: relative;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #5ee3b4;
  box-shadow: 0 0 0 4px rgba(94, 227, 180, 0.12);
}

.topbar-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border: 1px solid rgba(94, 227, 180, 0.5);
  border-radius: 50%;
  animation: pulse 2.6s ease-out infinite;
}

.topbar-link-wrap a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #8fdcff;
  font-weight: 600;
  transition: color 0.2s;
}

.topbar-link-wrap a:hover {
  color: #fff;
}

.topbar-link-wrap .icon {
  width: 14px;
  height: 14px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(221, 237, 247, 0.8);
  backdrop-filter: saturate(160%) blur(20px);
  -webkit-backdrop-filter: saturate(160%) blur(20px);
  transition: box-shadow 0.25s, background 0.25s;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 12px 34px -26px rgba(8, 51, 77, 0.45);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  min-height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
}

.brand-logo {
  width: 44px;
  height: 44px;
  filter: drop-shadow(0 8px 14px rgba(34, 158, 217, 0.25));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-text strong {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.brand-text small {
  margin-top: 6px;
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 1.55px;
  color: #7690a4;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  margin-left: auto;
}

.nav-link {
  position: relative;
  padding: 8px 0;
  font-size: 14.5px;
  font-weight: 600;
  color: #425d72;
  transition: color 0.2s;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 1px;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--blue-deep);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: none;
}

.header-help {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  font-weight: 600;
  color: #5d7689;
  transition: color 0.2s;
}

.header-help:hover {
  color: var(--blue-deep);
}

.header-help .icon {
  width: 16px;
  height: 16px;
}

.header-cta {
  height: 44px;
}

.menu-toggle {
  display: none;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink-2);
}

.menu-toggle span {
  display: grid;
  place-items: center;
}

.menu-toggle .icon {
  width: 21px;
  height: 21px;
}

.menu-toggle-close {
  display: none !important;
}

.nav-open .menu-toggle-open {
  display: none !important;
}

.nav-open .menu-toggle-close {
  display: grid !important;
}

.nav-mobile-cta {
  display: none;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  padding: 82px 0 26px;
  background: linear-gradient(180deg, #f1faff 0%, #f7fcff 48%, #ffffff 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(6px);
}

.hero-blob-1 {
  width: 760px;
  height: 760px;
  top: -360px;
  right: -180px;
  background: radial-gradient(circle, rgba(42, 171, 238, 0.18) 0%, rgba(42, 171, 238, 0.05) 46%, transparent 70%);
}

.hero-blob-2 {
  width: 560px;
  height: 560px;
  left: -260px;
  bottom: -260px;
  background: radial-gradient(circle, rgba(99, 205, 255, 0.14) 0%, transparent 68%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(13, 83, 120, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 83, 120, 0.045) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.45) 52%, transparent 82%);
  mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.45) 52%, transparent 82%);
}

.hero-ring {
  position: absolute;
  border: 1px solid rgba(34, 158, 217, 0.12);
  border-radius: 50%;
}

.hero-ring-1 {
  width: 560px;
  height: 560px;
  top: 4%;
  right: 2%;
}

.hero-ring-2 {
  width: 760px;
  height: 760px;
  top: -8%;
  right: -6%;
  border-color: rgba(34, 158, 217, 0.07);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: 32px;
  padding-bottom: 58px;
}

.hero-copy {
  max-width: 640px;
  padding-top: 6px;
}

.hero-copy > * {
  animation: heroRise 0.75s var(--ease) both;
}

.hero-copy > :nth-child(1) {
  animation-delay: 0.02s;
}

.hero-copy > :nth-child(2) {
  animation-delay: 0.08s;
}

.hero-copy > :nth-child(3) {
  animation-delay: 0.14s;
}

.hero-copy > :nth-child(4) {
  animation-delay: 0.2s;
}

.hero-copy > :nth-child(5) {
  animation-delay: 0.26s;
}

.hero-copy > :nth-child(6) {
  animation-delay: 0.32s;
}

.hero-visual {
  animation: heroFade 1s var(--ease) 0.16s both;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 36px;
  padding: 0 15px;
  border: 1px solid rgba(34, 158, 217, 0.2);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.76);
  color: #0e7daf;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.4px;
  box-shadow: 0 8px 22px -16px rgba(14, 111, 159, 0.5);
  backdrop-filter: blur(8px);
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue-2);
  box-shadow: 0 0 0 5px rgba(42, 171, 238, 0.12);
}

.hero h1 {
  max-width: 680px;
  margin: 24px 0 22px;
  font-family: var(--font-display);
  font-size: clamp(44px, 5.35vw, 66px);
  font-weight: 800;
  line-height: 1.07;
  letter-spacing: -0.042em;
  color: var(--ink);
  text-wrap: balance;
}

.hero-title-line {
  display: inline-block;
  white-space: nowrap;
}

.hero-lead {
  max-width: 560px;
  color: #4c657a;
  font-size: 17.5px;
  line-height: 1.85;
  letter-spacing: 0.1px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-actions .btn-primary {
  padding-inline: 28px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 24px;
}

.hero-trust li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #466176;
  font-size: 13px;
  font-weight: 600;
}

.hero-trust .icon {
  width: 17px;
  height: 17px;
  color: var(--blue);
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 21px;
  color: #8097a9;
  font-size: 11.5px;
  letter-spacing: 0.1px;
}

.hero-note .icon {
  width: 14px;
  height: 14px;
  color: #67a9c8;
}

/* Hero visual / phone */

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 632px;
  isolation: isolate;
}

.stage-halo {
  position: absolute;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(42, 171, 238, 0.22) 0%, rgba(42, 171, 238, 0.08) 45%, transparent 69%);
  filter: blur(8px);
}

.orbit {
  position: absolute;
  border: 1px dashed rgba(34, 158, 217, 0.26);
  border-radius: 50%;
}

.orbit-a {
  width: 520px;
  height: 520px;
  animation: spin 44s linear infinite;
}

.orbit-b {
  width: 632px;
  height: 632px;
  border-color: rgba(34, 158, 217, 0.13);
  animation: spin 66s linear infinite reverse;
}

.orbit::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #8edcff;
  box-shadow: 0 0 0 6px rgba(142, 220, 255, 0.16);
}

.phone {
  position: relative;
  z-index: 2;
  width: 306px;
  height: 622px;
  padding: 10px;
  border-radius: 50px;
  background: linear-gradient(160deg, #102c3f 0%, #061a2b 58%, #04121d 100%);
  box-shadow: 0 55px 100px -38px rgba(3, 47, 73, 0.65),
    0 0 0 1px rgba(255, 255, 255, 0.18) inset, 0 2px 0 rgba(255, 255, 255, 0.2) inset;
  transform: rotate(1.2deg);
}

.phone::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 50%;
  z-index: 5;
  width: 92px;
  height: 23px;
  border-radius: 0 0 14px 14px;
  background: #061a2b;
  transform: translateX(-50%);
}

.phone::after {
  content: "";
  position: absolute;
  top: 26%;
  right: -3px;
  width: 3px;
  height: 66px;
  border-radius: 0 3px 3px 0;
  background: #244354;
}

.phone-screen {
  display: flex;
  flex-direction: column;
  height: 100%;
  border-radius: 41px;
  background: #dcebf4;
  overflow: hidden;
}

.phone-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
  padding: 5px 21px 0;
  color: #16384d;
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 700;
}

.phone-status-icons {
  display: flex;
  align-items: center;
  gap: 4px;
}

.phone-status-icons svg {
  height: 9px;
  fill: currentColor;
}

.status-bars {
  width: 14px;
}

.status-wifi {
  width: 12px;
}

.status-battery {
  width: 20px;
}

.chat-head {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 54px;
  padding: 0 12px;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(21, 99, 137, 0.08);
  backdrop-filter: blur(10px);
}

.chat-back {
  width: 15px;
  height: 15px;
  color: #43809f;
  transform: rotate(180deg);
}

.chat-avatar {
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 3px 8px rgba(34, 158, 217, 0.25);
}

.chat-title {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
  line-height: 1.2;
}

.chat-title strong {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 10.5px;
  font-weight: 700;
  color: #102f43;
}

.chat-title small {
  margin-top: 3px;
  color: #2aa87a;
  font-size: 8.5px;
  font-weight: 600;
}

.verified {
  width: 12px;
  height: 12px;
  fill: var(--blue);
}

.chat-head-icons {
  display: flex;
  gap: 8px;
  color: #43809f;
}

.chat-head-icons .icon {
  width: 15px;
  height: 15px;
}

.chat-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 7px;
  padding: 10px 10px 6px;
  overflow: hidden;
  background-color: #dcebf4;
  background-image: radial-gradient(rgba(255, 255, 255, 0.72) 0.7px, transparent 0.7px);
  background-size: 15px 15px;
}

.chat-date {
  align-self: center;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(8, 51, 75, 0.12);
  color: #fff;
  font-size: 8px;
  font-weight: 600;
}

.msg {
  position: relative;
  max-width: 84%;
  padding: 7px 10px 6px;
  border-radius: 13px;
  font-size: 10.5px;
  line-height: 1.5;
  box-shadow: 0 2px 4px rgba(22, 73, 100, 0.06);
}

.msg p {
  margin: 0;
}

.msg-time {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 3px;
  margin-top: 2px;
  font-size: 7.5px;
  opacity: 0.58;
}

.msg-in {
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  background: #fff;
  color: #183a4f;
}

.msg-out {
  align-self: flex-end;
  border-bottom-right-radius: 4px;
  background: linear-gradient(135deg, #38b5f1 0%, #229ed9 100%);
  color: #fff;
  box-shadow: 0 3px 8px rgba(34, 158, 217, 0.28);
}

.msg-check {
  width: 13px;
  height: 9px;
}

.msg-two {
  margin-top: -1px;
}

.file-msg {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 88%;
  padding: 7px;
}

.file-icon {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  flex: none;
  border-radius: 9px;
  background: #e8f6ff;
  color: var(--blue);
}

.file-icon .icon,
.file-download .icon {
  width: 16px;
  height: 16px;
}

.file-meta {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
  line-height: 1.35;
}

.file-meta strong {
  overflow: hidden;
  font-size: 9px;
  font-weight: 700;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.file-meta small {
  margin-top: 2px;
  color: #7090a1;
  font-size: 7.5px;
}

.file-download {
  display: grid;
  place-items: center;
  width: 25px;
  height: 25px;
  flex: none;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
}

.voice-msg {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 73%;
  padding: 7px 9px;
}

.voice-play {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  flex: none;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
}

.voice-play .icon {
  width: 11px;
  height: 11px;
  margin-left: 1px;
}

.waveform {
  display: flex;
  align-items: center;
  gap: 2.5px;
  height: 20px;
  flex: 1;
}

.waveform i {
  width: 2.5px;
  height: var(--h);
  border-radius: 3px;
  background: #7ac8ec;
}

.waveform i:nth-child(3n) {
  background: var(--blue);
}

.voice-time {
  color: #6d8da0;
  font-size: 7.5px;
}

.reaction-pill {
  align-self: flex-start;
  margin-top: 1px;
  margin-left: 2px;
  padding: 3px 8px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 20px;
  background: #fff;
  color: #4f7184;
  font-size: 7.5px;
  box-shadow: 0 2px 5px rgba(22, 73, 100, 0.07);
}

.chat-input {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  margin: 0 8px 9px;
  padding: 0 12px;
  border-radius: 22px;
  background: #fff;
  color: #8ca6b5;
  font-size: 10px;
  box-shadow: 0 4px 12px rgba(22, 73, 100, 0.08);
}

.chat-input span {
  flex: 1;
}

.chat-input .icon {
  width: 16px;
  height: 16px;
  color: #5c8ea6;
}

.float-card {
  position: absolute;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 202px;
  padding: 11px 14px;
  border: 1px solid rgba(214, 235, 246, 0.9);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.93);
  box-shadow: 0 22px 44px -22px rgba(9, 70, 104, 0.4);
  backdrop-filter: blur(14px);
}

.float-card strong {
  display: block;
  color: #12384f;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.25;
}

.float-card small {
  display: block;
  margin-top: 3px;
  color: #7892a3;
  font-size: 9.5px;
}

.float-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 10px;
  background: #e9f7ff;
  color: var(--blue);
}

.float-icon .icon {
  width: 17px;
  height: 17px;
}

.float-icon-green {
  background: #e8fbf3;
  color: #18a977;
}

.float-card-shield {
  top: 92px;
  left: -28px;
  animation: floatY 6.5s ease-in-out infinite;
}

.float-card-sync {
  right: -36px;
  bottom: 112px;
  animation: floatY 7.5s ease-in-out infinite reverse;
}

.online-dot {
  width: 7px;
  height: 7px;
  margin-left: 5px;
  border-radius: 50%;
  background: #22b07d;
  box-shadow: 0 0 0 4px rgba(34, 176, 125, 0.13);
}

.plane-chip {
  position: absolute;
  top: 58px;
  right: 42px;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 17px;
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 18px 34px -14px rgba(34, 158, 217, 0.65);
  transform: rotate(-12deg);
  animation: floatChip 5.5s ease-in-out infinite;
}

.plane-chip svg {
  width: 30px;
  height: 30px;
  transform: rotate(10deg);
}

/* Stats */

.stats-wrap {
  position: relative;
  z-index: 3;
  padding-bottom: 8px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 26px 30px;
  border: 1px solid rgba(217, 235, 246, 0.9);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 26px 60px -36px rgba(10, 71, 104, 0.35);
  backdrop-filter: blur(14px);
}

.stat {
  padding: 3px 30px;
  border-left: 1px solid #e8f1f7;
}

.stat:first-child {
  border-left: 0;
  padding-left: 6px;
}

.stat dt {
  color: #7890a2;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2px;
}

.stat dd {
  margin-top: 5px;
  color: var(--ink);
  font-family: var(--font-display);
}

.stat strong {
  font-size: 33px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.stat sup {
  position: relative;
  top: -0.45em;
  margin-left: 1px;
  color: var(--blue);
  font-size: 16px;
  font-weight: 800;
}

.stats-source {
  margin-top: 10px;
  color: #92a6b5;
  font-size: 10.5px;
  text-align: center;
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section {
  position: relative;
  padding: 108px 0;
}

.section-head {
  max-width: 780px;
  margin-bottom: 42px;
}

.section-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #198ec7;
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 3.2px;
  text-transform: uppercase;
}

.section-kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--blue), rgba(42, 171, 238, 0.2));
}

.section-kicker-light {
  color: #86d8ff;
}

.section-kicker-light::before {
  background: linear-gradient(90deg, #86d8ff, rgba(134, 216, 255, 0.15));
}

.section-head h2,
.faq-intro h2 {
  margin: 15px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.17;
  letter-spacing: -0.038em;
  color: var(--ink);
  text-wrap: balance;
}

.section-desc {
  max-width: 680px;
  color: #5a7184;
  font-size: 16px;
  line-height: 1.85;
}

.section-head-split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 60px;
  max-width: none;
}

.section-head-split > div {
  flex: 1;
}

.section-head-split .section-desc {
  max-width: 410px;
  padding-bottom: 7px;
  font-size: 15px;
}

/* ==========================================================================
   Download
   ========================================================================== */

.section-download {
  background: #fff;
  border-top: 1px solid #eef7fc;
}

.filter-bar {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  margin-bottom: 26px;
  padding: 5px;
  border: 1px solid #e4eff7;
  border-radius: 14px;
  background: #f4fafe;
}

.filter-btn {
  height: 38px;
  padding: 0 19px;
  border-radius: 10px;
  color: #647d90;
  font-size: 13px;
  font-weight: 600;
  transition: background 0.22s, color 0.22s, box-shadow 0.22s;
}

.filter-btn:hover {
  color: var(--blue-deep);
}

.filter-btn.is-active {
  background: #fff;
  color: #0d6f9f;
  box-shadow: 0 5px 14px -6px rgba(14, 111, 159, 0.28);
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.platform-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 342px;
  padding: 27px 27px 24px;
  border: 1px solid #e2eef6;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 10px 30px -26px rgba(15, 77, 111, 0.3);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
  overflow: hidden;
}

.platform-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 2px;
  border-radius: 0 0 4px 4px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s;
}

.platform-card:hover {
  transform: translateY(-6px);
  border-color: rgba(34, 158, 217, 0.3);
  box-shadow: 0 30px 60px -30px rgba(15, 77, 111, 0.28);
}

.platform-card:hover::before {
  opacity: 1;
}

.platform-card.is-current {
  border-color: rgba(34, 158, 217, 0.5);
  background: linear-gradient(180deg, #f5fcff 0%, #fff 38%);
  box-shadow: 0 24px 52px -30px rgba(34, 158, 217, 0.42);
}

.platform-card.is-current::before {
  opacity: 1;
}

.platform-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 17px;
}

.platform-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 15px;
  background: #f0f9ff;
  color: var(--blue);
  transition: background 0.3s, color 0.3s;
}

.platform-icon .icon {
  width: 25px;
  height: 25px;
}

.platform-card:hover .platform-icon,
.platform-card.is-current .platform-icon {
  background: var(--gradient);
  color: #fff;
}

.platform-badge {
  display: none;
  align-items: center;
  min-height: 25px;
  padding: 0 10px;
  border: 1px solid rgba(34, 158, 217, 0.18);
  border-radius: 100px;
  background: #eaf8ff;
  color: #0b7db4;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.platform-card.is-current .platform-badge {
  display: inline-flex;
}

.platform-card h3 {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.platform-meta {
  margin-top: 3px;
  color: #7b92a3;
  font-size: 12px;
  font-weight: 500;
}

.platform-desc {
  margin-top: 12px;
  color: #5c7385;
  font-size: 13.5px;
  line-height: 1.7;
}

.platform-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.platform-tags span {
  padding: 3px 8px;
  border-radius: 6px;
  background: #f3f9fd;
  color: #6b8496;
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.file-verified {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 7px;
  color: #14815c;
  font-size: 10px;
  font-weight: 600;
}

.file-verified .icon {
  width: 12px;
  height: 12px;
}

.file-verified.is-warning {
  color: #a26a16;
}

.platform-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 44px;
  margin-top: auto;
  border: 1px solid transparent;
  border-radius: 11px;
  background: #f1f8fc;
  color: #0e6f9f;
  font-size: 13px;
  font-weight: 700;
  transition: background 0.25s, color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.platform-btn .icon {
  width: 16px;
  height: 16px;
}

.platform-btn:hover {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 12px 24px -12px rgba(34, 158, 217, 0.7);
}

.platform-sub-link {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  align-self: center;
  margin-top: 11px;
  color: #8ba0b0;
  font-size: 10.5px;
  transition: color 0.2s;
}

.platform-sub-link .icon {
  width: 12px;
  height: 12px;
}

.platform-sub-link:hover {
  color: var(--blue-deep);
}

.platform-card[hidden] {
  display: none !important;
}

.qr-panel {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 28px;
  padding: 22px 26px;
  border: 1px solid #e1eef7;
  border-radius: 24px;
  background: linear-gradient(100deg, #f4fbff 0%, #fbfdff 62%, #f2faff 100%);
}

.qr-image {
  width: 106px;
  height: 106px;
  flex: none;
  padding: 5px;
  border: 1px solid #e0edf5;
  border-radius: 15px;
  background: #fff;
  box-shadow: 0 10px 22px -16px rgba(15, 77, 111, 0.35);
}

.qr-image img {
  width: 100%;
  height: 100%;
  border-radius: 10px;
}

.qr-copy {
  flex: 1;
}

.qr-kicker {
  color: #1b95ce;
  font-family: var(--font-display);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 2.4px;
}

.qr-copy h3 {
  margin-top: 4px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.qr-copy p {
  max-width: 570px;
  margin-top: 5px;
  color: #6b8294;
  font-size: 12.5px;
  line-height: 1.7;
}

.download-disclaimer {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 7px;
  margin-top: 18px;
  color: #8ba0b0;
  font-size: 11.5px;
  text-align: center;
}

.download-disclaimer .icon {
  width: 14px;
  height: 14px;
  margin-top: 2px;
  color: #62a9c9;
}

/* ==========================================================================
   Features / bento
   ========================================================================== */

.section-features {
  background: #f5fafe;
  border-top: 1px solid #edf7fc;
  border-bottom: 1px solid #edf7fc;
}

.bento {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-flow: dense;
  gap: 20px;
}

.bento-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 246px;
  padding: 28px;
  border: 1px solid #e1eef6;
  border-radius: 27px;
  background: #fff;
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}

.bento-card:hover {
  transform: translateY(-5px);
  border-color: rgba(34, 158, 217, 0.26);
  box-shadow: 0 28px 55px -32px rgba(15, 77, 111, 0.3);
}

.bento-wide {
  grid-column: span 2;
}

.bento-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.bento-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  background: #eef9ff;
  color: var(--blue);
}

.bento-icon .icon {
  width: 21px;
  height: 21px;
}

.bento-label {
  color: #8ba1b2;
  font-family: var(--font-display);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 2.2px;
}

.bento-card h3 {
  margin-top: 22px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.bento-card p {
  margin-top: 9px;
  color: #5e7588;
  font-size: 13.5px;
  line-height: 1.75;
}

.bento-card h3 strong {
  color: var(--blue-deep);
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.045em;
}

.bento-speed {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.05);
  background: linear-gradient(135deg, #071d2d 0%, #0a3048 54%, #0c5174 100%);
  box-shadow: 0 30px 60px -34px rgba(3, 38, 59, 0.7);
}

.bento-speed::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(126, 214, 255, 0.26) 0.7px, transparent 0.7px);
  background-size: 20px 20px;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 60%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 60%);
  opacity: 0.55;
}

.bento-speed .bento-head,
.bento-speed h3,
.bento-speed p,
.bento-speed .speed-demo {
  position: relative;
  z-index: 1;
}

.bento-speed .bento-icon {
  background: rgba(255, 255, 255, 0.09);
  color: #8ddcff;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.bento-speed .bento-label {
  color: rgba(183, 226, 247, 0.55);
}

.bento-speed h3 {
  color: #fff;
}

.bento-speed p {
  max-width: 470px;
  color: rgba(198, 229, 244, 0.76);
}

.speed-demo {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 22px;
  max-width: 490px;
}

.speed-row {
  display: grid;
  grid-template-columns: 7px 118px minmax(80px, 1fr) 42px;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.055);
  font-size: 10px;
  color: rgba(206, 235, 248, 0.84);
}

.speed-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #67d8ff;
  box-shadow: 0 0 0 3px rgba(103, 216, 255, 0.12);
}

.speed-row i {
  height: 4px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.speed-row b {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2aabee, #7ee0ff);
}

.speed-row em {
  color: #9fe4ff;
  font-family: var(--font-display);
  font-size: 9.5px;
  font-style: normal;
  font-weight: 700;
  text-align: right;
}

.speed-plane {
  position: absolute;
  right: -16px;
  bottom: -30px;
  z-index: 0;
  width: 168px;
  height: 168px;
  color: rgba(125, 216, 255, 0.11);
  transform: rotate(-8deg);
}

.speed-plane svg {
  width: 100%;
  height: 100%;
}

.bento-privacy {
  background: linear-gradient(155deg, #fbfeff 0%, #eefaff 100%);
}

.e2e-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  margin-top: 12px;
  padding: 6px 10px;
  border: 1px solid rgba(34, 158, 217, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.75);
  color: #1687ba;
  font-family: var(--font-display);
  font-size: 8.5px;
  font-weight: 800;
  letter-spacing: 1.3px;
}

.e2e-badge .icon {
  width: 13px;
  height: 13px;
}

.privacy-demo {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: auto;
  padding: 10px 11px;
  border: 1px solid rgba(34, 158, 217, 0.14);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.72);
}

.privacy-demo-icon {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  flex: none;
  border-radius: 8px;
  background: #e7f8ff;
  color: #199acf;
}

.privacy-demo-icon .icon {
  width: 13px;
  height: 13px;
}

.privacy-demo-bars {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 4px;
}

.privacy-demo-bars i {
  width: 100%;
  height: 4px;
  border-radius: 4px;
  background: #cfeaf8;
}

.privacy-demo-bars i:nth-child(2) {
  width: 82%;
}

.privacy-demo-bars i:nth-child(3) {
  width: 46%;
}

.privacy-demo em {
  flex: none;
  color: #6494ab;
  font-size: 8.5px;
  font-style: normal;
  font-weight: 600;
}

.member-row {
  display: flex;
  align-items: center;
  margin-top: auto;
  padding-top: 16px;
}

.mini-avatar {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  margin-left: -7px;
  border: 2px solid #fff;
  border-radius: 50%;
  color: #fff;
  font-family: var(--font-display);
  font-size: 9px;
  font-weight: 700;
  box-shadow: 0 3px 7px -4px rgba(15, 77, 111, 0.4);
}

.mini-avatar:first-child {
  margin-left: 0;
}

.mini-avatar-1 {
  background: linear-gradient(135deg, #59c8f5, #229ed9);
}

.mini-avatar-2 {
  background: linear-gradient(135deg, #7bc9b3, #20a77b);
}

.mini-avatar-3 {
  background: linear-gradient(135deg, #8fa7f0, #5d77ce);
}

.mini-avatar-4 {
  background: #eef8fe;
  color: #3c8caf;
}

.member-row small {
  margin-left: 9px;
  color: #7892a4;
  font-size: 9.5px;
  font-weight: 500;
}

.mini-file {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding: 8px 10px;
  border: 1px solid #e0eff8;
  border-radius: 10px;
  background: #f9fdff;
}

.mini-file-icon {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  flex: none;
  border-radius: 8px;
  background: #e8f6ff;
  color: var(--blue);
}

.mini-file-icon .icon {
  width: 15px;
  height: 15px;
}

.mini-file-meta {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
  line-height: 1.3;
}

.mini-file-meta strong {
  overflow: hidden;
  color: #31566c;
  font-size: 9.5px;
  font-weight: 700;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.mini-file-meta small {
  color: #8ba0b0;
  font-size: 8.5px;
}

.mini-file em {
  color: #15956a;
  font-family: var(--font-display);
  font-size: 9px;
  font-style: normal;
  font-weight: 800;
}

.bento-sync {
  background: linear-gradient(155deg, #ffffff 0%, #f3fbff 100%);
}

.sync-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  align-self: flex-start;
  margin-top: auto;
  padding: 6px 10px;
  border-radius: 8px;
  background: #e9f9f2;
  color: #13845e;
  font-size: 10px;
  font-weight: 700;
}

.sync-badge .icon {
  width: 13px;
  height: 13px;
}

.bento-code {
  background: #f9fcff;
}

.code-line {
  display: block;
  margin-top: auto;
  padding: 8px 11px;
  border: 1px solid #e3eff7;
  border-radius: 8px;
  background: #fff;
  color: #3f718d;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 9.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bento-expressive {
  background: linear-gradient(115deg, #f1faff 0%, #ffffff 55%, #edf9ff 100%);
}

.sticker-row {
  display: flex;
  gap: 8px;
  margin-top: auto;
  padding-top: 20px;
}

.sticker-row span {
  display: grid;
  place-items: center;
  width: 43px;
  height: 43px;
  border: 1px solid #e3f1f9;
  border-radius: 13px;
  background: #fff;
  font-size: 21px;
  box-shadow: 0 8px 18px -12px rgba(15, 77, 111, 0.3);
  transform: rotate(-4deg);
  transition: transform 0.25s var(--ease);
}

.sticker-row span:nth-child(even) {
  transform: rotate(4deg);
}

.bento-expressive:hover .sticker-row span {
  transform: translateY(-5px) rotate(0);
}

.bento-expressive:hover .sticker-row span:nth-child(2) {
  transition-delay: 0.03s;
}

.bento-expressive:hover .sticker-row span:nth-child(3) {
  transition-delay: 0.06s;
}

.bento-expressive:hover .sticker-row span:nth-child(4) {
  transition-delay: 0.09s;
}

.bento-expressive:hover .sticker-row span:nth-child(5) {
  transition-delay: 0.12s;
}

.bento-expressive:hover .sticker-row span:nth-child(6) {
  transition-delay: 0.15s;
}

/* ==========================================================================
   Guide
   ========================================================================== */

.section-guide {
  background: #fff;
}

.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.steps::before {
  content: "";
  position: absolute;
  top: 78px;
  left: 18%;
  right: 18%;
  border-top: 1px dashed #cfe5f3;
}

.step-card {
  position: relative;
  z-index: 1;
  padding: 30px;
  border: 1px solid #e2eef6;
  border-radius: 25px;
  background: linear-gradient(170deg, #fbfdff 0%, #ffffff 60%);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}

.step-card:hover {
  transform: translateY(-5px);
  border-color: rgba(34, 158, 217, 0.28);
  box-shadow: var(--shadow-md);
}

.step-num {
  position: absolute;
  top: 17px;
  right: 24px;
  color: rgba(34, 158, 217, 0.14);
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.06em;
}

.step-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: #eaf8ff;
  color: var(--blue);
}

.step-icon .icon {
  width: 25px;
  height: 25px;
}

.step-card h3 {
  margin-top: 20px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.step-card p {
  margin-top: 9px;
  color: #5e7588;
  font-size: 13.5px;
  line-height: 1.78;
}

.step-card a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 16px;
  color: #1287bd;
  font-size: 12px;
  font-weight: 700;
}

.step-card a .icon {
  width: 13px;
  height: 13px;
  transition: transform 0.2s;
}

.step-card a:hover .icon {
  transform: translateX(3px);
}

.requirements {
  margin-top: 56px;
  border: 1px solid #e2eef6;
  border-radius: 26px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.requirements-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  padding: 30px 34px;
  border-bottom: 1px solid #eaf3f9;
  background: linear-gradient(100deg, #fbfdff 0%, #f4fbff 100%);
}

.requirements-head h3 {
  margin-top: 8px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.requirements-head p {
  max-width: 430px;
  color: #708798;
  font-size: 12.5px;
  line-height: 1.75;
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
}

.requirements table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.requirements thead th {
  padding: 13px 22px;
  background: #f8fcfe;
  color: #8197a7;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.8px;
  white-space: nowrap;
}

.requirements tbody th,
.requirements td {
  padding: 14px 22px;
  border-top: 1px solid #eef5f9;
  color: #587083;
  white-space: nowrap;
}

.requirements tbody th {
  color: var(--ink-2);
  font-weight: 700;
}

.requirements code {
  padding: 2px 6px;
  border-radius: 5px;
  background: #eaf7fe;
  color: #0e709f;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
}

.guide-note {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 22px;
  padding: 18px 22px;
  border: 1px solid #dceff9;
  border-radius: 17px;
  background: #f4fbff;
}

.guide-note-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 11px;
  background: #fff;
  color: var(--blue);
  box-shadow: 0 5px 14px -8px rgba(14, 111, 159, 0.3);
}

.guide-note-icon .icon {
  width: 18px;
  height: 18px;
}

.guide-note p {
  flex: 1;
  color: #678092;
  font-size: 12px;
  line-height: 1.7;
}

.guide-note strong {
  color: #28536b;
}

.guide-note a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: none;
  color: #0f83b8;
  font-size: 12px;
  font-weight: 700;
}

.guide-note a .icon {
  width: 13px;
  height: 13px;
}

/* ==========================================================================
   Security
   ========================================================================== */

.section-security {
  padding: 36px 0 108px;
  background: #fff;
}

.security-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 40px;
  padding: 70px;
  border-radius: 38px;
  background: linear-gradient(135deg, #061a2b 0%, #082941 50%, #0a3c58 100%);
  color: #fff;
  box-shadow: 0 45px 90px -45px rgba(3, 36, 56, 0.65);
  overflow: hidden;
  isolation: isolate;
}

.security-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(rgba(136, 219, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(136, 219, 255, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.4) 68%, transparent 95%);
  mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.4) 68%, transparent 95%);
}

.security-glow {
  position: absolute;
  top: -180px;
  right: -130px;
  z-index: -1;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(42, 171, 238, 0.26) 0%, transparent 66%);
  filter: blur(4px);
}

.security-copy h2 {
  margin: 16px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(38px, 4.2vw, 53px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.045em;
  color: #fff;
}

.security-copy > p {
  max-width: 540px;
  color: rgba(199, 230, 245, 0.78);
  font-size: 15px;
  line-height: 1.85;
}

.security-list {
  margin: 26px 0 30px;
  max-width: 550px;
}

.security-list li {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(157, 218, 244, 0.1);
  color: rgba(220, 240, 250, 0.9);
  font-size: 13px;
  line-height: 1.7;
}

.security-list li:last-child {
  border-bottom: 0;
}

.security-list .icon {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  padding: 4px;
  border-radius: 50%;
  background: rgba(94, 227, 180, 0.12);
  color: #6ee7ba;
  stroke-width: 2.4;
}

.security-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
}

.security-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: #9ddcf7;
  font-size: 12.5px;
  font-weight: 600;
  transition: color 0.2s;
}

.security-link:hover {
  color: #fff;
}

.security-link .icon {
  width: 13px;
  height: 13px;
}

.security-note {
  max-width: 520px;
  margin-top: 23px;
  color: rgba(159, 198, 218, 0.55);
  font-size: 10.5px;
  line-height: 1.7;
}

.security-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 450px;
}

.security-orbit {
  position: absolute;
  border: 1px dashed rgba(126, 212, 255, 0.22);
  border-radius: 50%;
}

.security-orbit-1 {
  width: 390px;
  height: 390px;
  animation: spin 50s linear infinite;
}

.security-orbit-2 {
  width: 290px;
  height: 290px;
  border-style: solid;
  border-color: rgba(126, 212, 255, 0.1);
  animation: spin 34s linear infinite reverse;
}

.shield {
  position: relative;
  display: grid;
  place-items: center;
  width: 216px;
  height: 216px;
  border: 1px solid rgba(143, 220, 255, 0.22);
  border-radius: 50%;
  background: radial-gradient(circle at 42% 32%, rgba(76, 183, 235, 0.23), rgba(6, 32, 49, 0.3) 70%);
  box-shadow: 0 0 0 22px rgba(107, 208, 255, 0.025), 0 30px 60px -30px rgba(0, 0, 0, 0.7),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(8px);
}

.shield-glow {
  position: absolute;
  inset: 17%;
  border-radius: 50%;
  background: rgba(73, 190, 244, 0.18);
  filter: blur(24px);
}

.shield-icon {
  position: relative;
  z-index: 1;
  width: 112px;
  height: 112px;
  fill: none;
  stroke: #9de5ff;
  stroke-width: 1.1;
  filter: drop-shadow(0 0 22px rgba(89, 206, 255, 0.45));
}

.shield-lock {
  position: absolute;
  bottom: 24px;
  left: 50%;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 49px;
  height: 49px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 10px 24px -8px rgba(34, 158, 217, 0.7);
  transform: translateX(-50%);
}

.shield-lock .icon {
  width: 21px;
  height: 21px;
}

.shield-label {
  position: absolute;
  top: 26px;
  left: 50%;
  color: rgba(183, 229, 248, 0.5);
  font-family: var(--font-display);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 3px;
  transform: translateX(-50%);
}

.security-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 13px;
  border: 1px solid rgba(167, 226, 251, 0.18);
  border-radius: 11px;
  background: rgba(13, 56, 81, 0.72);
  color: #c7eaf9;
  font-size: 11px;
  font-weight: 600;
  box-shadow: 0 14px 30px -18px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(12px);
  animation: floatY 6s ease-in-out infinite;
}

.security-chip .icon {
  width: 14px;
  height: 14px;
  color: #73d4ff;
}

.chip-1 {
  top: 50px;
  left: 8px;
}

.chip-2 {
  top: 36px;
  right: 10px;
  animation-delay: -1.6s;
}

.chip-3 {
  bottom: 67px;
  left: 0;
  animation-delay: -3.1s;
}

.chip-4 {
  right: 0;
  bottom: 152px;
  animation-delay: -4.4s;
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.section-faq {
  background: #f6fbfe;
  border-top: 1px solid #edf7fc;
  border-bottom: 1px solid #edf7fc;
}

.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 76px;
  align-items: start;
}

.faq-intro {
  position: sticky;
  top: 116px;
}

.faq-intro h2 {
  font-size: clamp(36px, 3.7vw, 46px);
}

.faq-intro > p {
  color: #5b7285;
  font-size: 14.5px;
  line-height: 1.85;
}

.faq-help-card {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 26px;
  padding: 15px 16px;
  border: 1px solid #e0edf6;
  border-radius: 17px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease), box-shadow 0.25s, border-color 0.25s;
}

.faq-help-card:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 158, 217, 0.3);
  box-shadow: var(--shadow-md);
}

.faq-help-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 11px;
  background: #eaf8ff;
  color: var(--blue);
}

.faq-help-icon .icon {
  width: 19px;
  height: 19px;
}

.faq-help-card > span:nth-child(2) {
  flex: 1;
}

.faq-help-card strong {
  display: block;
  color: var(--ink-2);
  font-size: 12.5px;
  font-weight: 700;
}

.faq-help-card small {
  display: block;
  margin-top: 2px;
  color: #8ba0b0;
  font-size: 10.5px;
}

.faq-help-arrow {
  width: 15px;
  height: 15px;
  color: #8ba0b0;
}

.faq-update {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 18px;
  color: #95a9b8;
  font-size: 10.5px;
}

.faq-update .icon {
  width: 13px;
  height: 13px;
}

.faq-list {
  padding: 2px 30px;
  border: 1px solid #e1eef6;
  border-radius: 27px;
  background: #fff;
  box-shadow: 0 22px 55px -40px rgba(15, 77, 111, 0.3);
}

.faq-item {
  border-bottom: 1px solid #edf4f8;
}

.faq-item:last-child {
  border-bottom: 0;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 21px 0;
  color: #17384f;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  cursor: pointer;
  list-style: none;
  transition: color 0.2s;
}

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

.faq-item summary:hover {
  color: #0e7db2;
}

.faq-toggle {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  flex: none;
  border-radius: 50%;
  background: #f0f9fe;
  color: #4f8dab;
  transition: background 0.25s, color 0.25s, transform 0.25s;
}

.faq-toggle .icon {
  width: 14px;
  height: 14px;
}

.faq-item[open] summary {
  color: #0e7db2;
}

.faq-item[open] .faq-toggle {
  background: var(--gradient);
  color: #fff;
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 42px 21px 0;
  color: #5c7386;
  font-size: 13.5px;
  line-height: 1.82;
  animation: answerIn 0.3s var(--ease);
}

.faq-answer a {
  color: #0f83b8;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(15, 131, 184, 0.35);
  text-underline-offset: 3px;
}

.faq-answer strong {
  color: #31566c;
}

/* ==========================================================================
   CTA
   ========================================================================== */

.section-cta {
  padding: 0 0 108px;
  background: #fff;
}

.cta-panel {
  position: relative;
  padding: 68px 60px;
  border-radius: 36px;
  background: linear-gradient(120deg, #1d99d4 0%, #229ed9 38%, #1687c4 70%, #0d6c9f 100%);
  overflow: hidden;
  isolation: isolate;
  box-shadow: 0 40px 80px -38px rgba(13, 108, 159, 0.55);
}

.cta-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.cta-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 78%);
  mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 78%);
}

.cta-glow {
  position: absolute;
  top: -240px;
  left: 50%;
  width: 780px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.24) 0%, transparent 66%);
  transform: translateX(-50%);
}

.cta-plane {
  position: absolute;
  top: 50%;
  right: 4%;
  width: 360px;
  height: 360px;
  color: rgba(255, 255, 255, 0.1);
  transform: translateY(-50%) rotate(-10deg);
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
}

.cta-content .section-kicker {
  justify-content: center;
}

.cta-content h2 {
  margin: 15px 0 13px;
  color: #fff;
  font-family: var(--font-display);
  font-size: clamp(36px, 4.3vw, 50px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.04em;
}

.cta-content > p {
  color: rgba(230, 247, 255, 0.84);
  font-size: 15px;
  line-height: 1.8;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.cta-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 19px;
  color: rgba(224, 246, 255, 0.64);
  font-size: 11px;
}

.cta-note .icon {
  width: 14px;
  height: 14px;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  padding: 68px 0 26px;
  background: #061a2b;
  color: #9db6c8;
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(260px, 1.5fr) repeat(3, minmax(120px, 0.8fr));
  gap: 48px;
}

.brand-footer .brand-text strong {
  color: #fff;
}

.brand-footer .brand-text small {
  color: #66879c;
}

.footer-brand > p {
  max-width: 355px;
  margin-top: 18px;
  color: #86a3b7;
  font-size: 13px;
  line-height: 1.85;
}

.footer-official {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
}

.footer-official a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: #7fcdf1;
  font-size: 11.5px;
  font-weight: 600;
  transition: color 0.2s;
}

.footer-official a:hover {
  color: #fff;
}

.footer-official .icon {
  width: 13px;
  height: 13px;
}

.footer-col h3 {
  margin-bottom: 17px;
  color: #e7f4fb;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.4px;
}

.footer-col a {
  display: block;
  width: fit-content;
  margin-top: 10px;
  color: #8aa7ba;
  font-size: 12.5px;
  transition: color 0.2s, transform 0.2s;
}

.footer-col a:hover {
  color: #7ed3fa;
  transform: translateX(2px);
}

.footer-disclaimer {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid rgba(146, 193, 218, 0.12);
}

.footer-disclaimer p {
  color: #6f8da2;
  font-size: 10.5px;
  line-height: 1.8;
}

.footer-disclaimer strong {
  color: #9dbacd;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(146, 193, 218, 0.12);
  color: #6c899d;
  font-size: 10.5px;
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 18px;
}

.footer-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #7fa3b8;
}

.footer-status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #42d6a0;
  box-shadow: 0 0 0 3px rgba(66, 214, 160, 0.1);
}

/* ==========================================================================
   Utilities / motion
   ========================================================================== */

.back-to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 80;
  display: grid;
  place-items: center;
  width: 47px;
  height: 47px;
  border: 1px solid #dcecf6;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.94);
  color: #2b6e90;
  box-shadow: 0 14px 32px -14px rgba(10, 71, 104, 0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.25s, visibility 0.25s, transform 0.25s, background 0.25s, color 0.25s;
  backdrop-filter: blur(10px);
}

.back-to-top .icon {
  width: 19px;
  height: 19px;
}

.back-to-top:hover {
  background: var(--gradient);
  color: #fff;
  transform: translateY(-2px);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 200;
  max-width: calc(100% - 40px);
  padding: 11px 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 11px;
  background: rgba(8, 26, 42, 0.94);
  color: #eaf8ff;
  font-size: 12px;
  box-shadow: 0 18px 40px -16px rgba(0, 0, 0, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 12px);
  transition: opacity 0.25s, visibility 0.25s, transform 0.25s;
  backdrop-filter: blur(10px);
}

.toast.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

@keyframes pulse {
  0% {
    opacity: 0.8;
    transform: scale(0.7);
  }
  70%,
  100% {
    opacity: 0;
    transform: scale(1.6);
  }
}

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

@keyframes heroFade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes floatY {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-9px);
  }
}

@keyframes floatChip {
  0%,
  100% {
    transform: rotate(-12deg) translateY(0);
  }
  50% {
    transform: rotate(-12deg) translateY(-9px);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes answerIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1120px) {
  .hero h1 {
    font-size: clamp(44px, 5.1vw, 66px);
  }

  .hero-visual {
    min-height: 600px;
    transform: scale(0.94);
  }

  .float-card-shield {
    left: -10px;
  }

  .float-card-sync {
    right: -14px;
  }

  .security-panel {
    padding: 54px;
  }

  .faq-layout {
    gap: 48px;
  }
}

@media (max-width: 960px) {
  .container {
    width: min(100% - 40px, 760px);
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 99;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: calc(100vh - 78px);
    margin: 0;
    padding: 12px 24px 26px;
    border-top: 1px solid #edf5f9;
    border-bottom: 1px solid #e4eff6;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 25px 40px -20px rgba(9, 54, 81, 0.22);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.22s, visibility 0.22s, transform 0.22s;
    overflow-y: auto;
    backdrop-filter: blur(18px);
  }

  .nav-open .main-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-link {
    padding: 14px 2px;
    border-bottom: 1px solid #f0f6fa;
    font-size: 16px;
  }

  .nav-link::after {
    display: none;
  }

  .nav-mobile-cta {
    display: block;
    margin-top: 18px;
  }

  .nav-mobile-cta p {
    margin-top: 9px;
    color: #8ba0b0;
    font-size: 10.5px;
    text-align: center;
  }

  .menu-toggle {
    display: grid;
  }

  .header-help {
    display: none;
  }

  .hero {
    padding-top: 56px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-bottom: 42px;
  }

  .hero-copy {
    max-width: 700px;
  }

  .hero h1 {
    font-size: clamp(46px, 8.2vw, 68px);
  }

  .hero-lead {
    max-width: 620px;
  }

  .hero-visual {
    width: 100%;
    min-height: 600px;
    margin-top: 4px;
    transform: none;
  }

  .orbit-a {
    width: 500px;
    height: 500px;
  }

  .orbit-b {
    width: 610px;
    height: 610px;
  }

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 0;
    padding: 23px;
  }

  .stat:nth-child(3) {
    border-left: 0;
    padding-left: 6px;
  }

  .stat {
    padding: 0 24px;
  }

  .stat strong {
    font-size: 29px;
  }

  .section {
    padding: 82px 0;
  }

  .section-head-split {
    display: block;
  }

  .section-head-split .section-desc {
    max-width: 620px;
    margin-top: 12px;
    padding-bottom: 0;
  }

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

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

  .bento-wide {
    grid-column: span 2;
  }

  .bento-expressive {
    grid-column: span 1;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .steps::before {
    top: 0;
    bottom: 0;
    left: 54px;
    right: auto;
    border-top: 0;
    border-left: 1px dashed #cfe5f3;
  }

  .step-card {
    padding-left: 92px;
    min-height: 150px;
  }

  .step-icon {
    position: absolute;
    top: 30px;
    left: 28px;
  }

  .step-num {
    right: 26px;
  }

  .requirements-head {
    display: block;
  }

  .requirements-head p {
    max-width: 620px;
    margin-top: 10px;
  }

  .security-panel {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 48px 42px 32px;
  }

  .security-visual {
    min-height: 400px;
  }

  .security-orbit-1 {
    width: 350px;
    height: 350px;
  }

  .faq-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .faq-intro {
    position: static;
  }

  .faq-intro > p {
    max-width: 640px;
  }

  .faq-help-card {
    max-width: 480px;
  }

  .footer-main {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 34px;
  }

  .footer-col:last-child {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 22px;
    padding-top: 8px;
    border-top: 1px solid rgba(146, 193, 218, 0.1);
  }

  .footer-col:last-child h3 {
    width: 100%;
    margin-bottom: 8px;
  }

  .footer-col:last-child a {
    margin-top: 0;
  }
}

@media (max-width: 720px) {
  .container {
    width: calc(100% - 36px);
  }

  .topbar {
    font-size: 11px;
  }

  .topbar-main {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }

  .topbar-link-wrap {
    display: none;
  }

  .header-inner {
    min-height: 68px;
    gap: 14px;
  }

  .brand-logo {
    width: 38px;
    height: 38px;
  }

  .brand-text strong {
    font-size: 18px;
  }

  .brand-text small {
    font-size: 7.5px;
    letter-spacing: 1.2px;
  }

  .header-cta {
    display: none;
  }

  .hero {
    padding-top: 44px;
  }

  .hero h1 {
    margin-top: 20px;
    font-size: clamp(40px, 10.8vw, 56px);
    letter-spacing: -0.045em;
  }

  .hero-lead {
    font-size: 15.5px;
    line-height: 1.8;
  }

  .hero-actions {
    margin-top: 26px;
  }

  .btn-lg {
    height: 54px;
    padding: 0 24px;
    font-size: 15px;
  }

  .hero-trust {
    gap: 14px;
    margin-top: 20px;
  }

  .hero-note {
    align-items: flex-start;
    font-size: 10.5px;
    line-height: 1.5;
  }

  .hero-visual {
    min-height: 550px;
  }

  .phone {
    width: 276px;
    height: 560px;
    border-radius: 45px;
  }

  .phone-screen {
    border-radius: 36px;
  }

  .stage-halo {
    width: 460px;
    height: 460px;
  }

  .orbit-a {
    width: 430px;
    height: 430px;
  }

  .orbit-b {
    width: 530px;
    height: 530px;
  }

  .float-card {
    min-width: 176px;
    padding: 9px 11px;
  }

  .float-card strong {
    font-size: 10.5px;
  }

  .float-card small {
    font-size: 8.5px;
  }

  .float-icon {
    width: 30px;
    height: 30px;
  }

  .float-card-shield {
    top: 58px;
    left: -4px;
  }

  .float-card-sync {
    right: -4px;
    bottom: 76px;
  }

  .plane-chip {
    top: 28px;
    right: 14px;
    width: 45px;
    height: 45px;
    border-radius: 14px;
  }

  .plane-chip svg {
    width: 25px;
    height: 25px;
  }

  .stats {
    padding: 19px 18px;
    border-radius: 20px;
  }

  .stat {
    padding: 0 15px;
  }

  .stat:nth-child(odd) {
    border-left: 0;
    padding-left: 2px;
  }

  .stat dt {
    font-size: 10.5px;
  }

  .stat strong {
    font-size: 26px;
  }

  .stat sup {
    font-size: 13px;
  }

  .stats-source {
    font-size: 9.5px;
    line-height: 1.6;
  }

  .section {
    padding: 68px 0;
  }

  .section-head {
    margin-bottom: 30px;
  }

  .section-head h2,
  .faq-intro h2 {
    font-size: clamp(30px, 8.4vw, 38px);
  }

  .section-desc {
    font-size: 14.5px;
    line-height: 1.8;
  }

  .filter-bar {
    display: flex;
    width: 100%;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .filter-bar::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    flex: 1;
    min-width: max-content;
    padding: 0 13px;
  }

  .platform-grid {
    grid-template-columns: 1fr;
  }

  .platform-card {
    min-height: 0;
    padding: 23px;
  }

  .platform-btn {
    margin-top: 18px;
  }

  .platform-sub-link {
    align-self: flex-start;
  }

  .qr-panel {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
    gap: 16px;
  }

  .qr-image {
    width: 96px;
    height: 96px;
  }

  .qr-panel .btn {
    width: 100%;
  }

  .download-disclaimer {
    text-align: left;
  }

  .bento {
    grid-template-columns: 1fr;
  }

  .bento-wide,
  .bento-expressive {
    grid-column: span 1;
  }

  .bento-card {
    min-height: 0;
    padding: 24px;
  }

  .bento-card h3 {
    font-size: 20px;
  }

  .speed-row {
    grid-template-columns: 7px 1fr 40px;
  }

  .speed-row i {
    display: none;
  }

  .steps::before {
    display: none;
  }

  .step-card {
    padding: 24px;
    min-height: 0;
  }

  .step-icon {
    position: static;
    width: 46px;
    height: 46px;
  }

  .step-num {
    top: 18px;
    right: 21px;
    font-size: 36px;
  }

  .step-card h3 {
    margin-top: 15px;
    font-size: 20px;
  }

  .requirements {
    margin-top: 38px;
  }

  .requirements-head {
    padding: 24px 22px;
  }

  .requirements-head h3 {
    font-size: 22px;
  }

  .requirements thead th,
  .requirements tbody th,
  .requirements td {
    padding: 12px 16px;
  }

  .requirements table {
    table-layout: fixed;
  }

  .requirements thead th:nth-child(4),
  .requirements tbody td:nth-child(4) {
    display: none;
  }

  .requirements thead th:nth-child(1),
  .requirements tbody th {
    width: 23%;
  }

  .requirements thead th:nth-child(2) {
    width: 51%;
  }

  .requirements thead th:nth-child(3) {
    width: 26%;
  }

  .requirements tbody th,
  .requirements td {
    padding: 11px 10px;
    font-size: 11.5px;
    white-space: normal;
    line-height: 1.55;
  }

  .requirements thead th {
    padding: 10px;
    font-size: 9.5px;
  }

  .requirements code {
    font-size: 10px;
    white-space: nowrap;
  }

  .guide-note {
    flex-wrap: wrap;
    align-items: flex-start;
    padding: 16px;
  }

  .guide-note p {
    flex: 1 1 calc(100% - 56px);
  }

  .guide-note a {
    margin-left: 52px;
  }

  .section-security {
    padding: 16px 0 68px;
  }

  .security-panel {
    padding: 38px 25px 20px;
    border-radius: 28px;
  }

  .security-copy h2 {
    font-size: clamp(34px, 9.4vw, 44px);
  }

  .security-copy > p {
    font-size: 14px;
  }

  .security-list li {
    font-size: 12.5px;
  }

  .security-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 15px;
  }

  .security-actions .btn {
    width: 100%;
  }

  .security-visual {
    min-height: 345px;
    margin-top: 10px;
  }

  .security-orbit-1 {
    width: 300px;
    height: 300px;
  }

  .security-orbit-2 {
    width: 230px;
    height: 230px;
  }

  .shield {
    width: 180px;
    height: 180px;
  }

  .shield-icon {
    width: 92px;
    height: 92px;
  }

  .shield-lock {
    bottom: 18px;
    width: 43px;
    height: 43px;
  }

  .security-chip {
    font-size: 9.5px;
    padding: 7px 9px;
  }

  .chip-1 {
    top: 32px;
    left: 0;
  }

  .chip-2 {
    top: 20px;
    right: 0;
  }

  .chip-3 {
    bottom: 36px;
    left: 0;
  }

  .chip-4 {
    right: 0;
    bottom: 106px;
  }

  .faq-list {
    padding: 0 19px;
    border-radius: 22px;
  }

  .faq-item summary {
    padding: 18px 0;
    font-size: 14px;
  }

  .faq-answer {
    padding-right: 12px;
    font-size: 12.5px;
  }

  .section-cta {
    padding-bottom: 68px;
  }

  .cta-panel {
    padding: 52px 24px;
    border-radius: 28px;
  }

  .cta-content h2 {
    font-size: clamp(31px, 8.5vw, 40px);
  }

  .cta-content > p {
    font-size: 14px;
  }

  .cta-actions {
    flex-direction: column;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .cta-note {
    flex-wrap: wrap;
    font-size: 10px;
  }

  .cta-plane {
    width: 240px;
    height: 240px;
    right: -80px;
    opacity: 0.75;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 32px 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-brand > p {
    max-width: 560px;
  }

  .footer-col:last-child {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 9px;
  }

  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
    width: 43px;
    height: 43px;
  }

  .toast {
    bottom: 72px;
  }
}

@media (min-width: 961px) and (max-width: 1279px) {
  .float-card {
    display: none;
  }
}

@media (max-width: 680px) {
  .float-card {
    display: none;
  }
}

@media (max-width: 460px) {
  .hero h1 {
    font-size: 38px;
  }

  .eyebrow {
    font-size: 11px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-trust {
    justify-content: space-between;
    gap: 6px;
  }

  .hero-trust li {
    font-size: 11.5px;
  }

  .hero-visual {
    min-height: 500px;
  }

  .phone {
    width: 250px;
    height: 510px;
    padding: 8px;
    border-radius: 41px;
  }

  .phone-screen {
    border-radius: 33px;
  }

  .phone::before {
    top: 15px;
    width: 78px;
    height: 20px;
  }

  .float-card {
    min-width: 158px;
    padding: 8px 9px;
  }

  .float-card-shield {
    top: 30px;
    left: -8px;
  }

  .float-card-sync {
    right: -8px;
    bottom: 48px;
  }

  .float-icon {
    width: 27px;
    height: 27px;
  }

  .float-card strong {
    font-size: 9.5px;
  }

  .float-card small {
    font-size: 7.5px;
  }

  .orbit-a {
    width: 380px;
    height: 380px;
  }

  .orbit-b {
    width: 460px;
    height: 460px;
  }

  .plane-chip {
    top: 4px;
    right: 2px;
  }

  .stat strong {
    font-size: 23px;
  }

  .section-head h2,
  .faq-intro h2 {
    font-size: 29px;
  }

  .security-panel {
    padding: 32px 20px 16px;
  }

  .security-chip .icon {
    width: 12px;
    height: 12px;
  }

  .security-chip {
    font-size: 8.5px;
    padding: 6px 7px;
  }

  .chip-1 {
    top: 18px;
  }

  .chip-2 {
    top: 8px;
  }

  .chip-4 {
    bottom: 82px;
  }

  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-col:last-child {
    grid-column: auto;
    display: block;
    padding-top: 0;
    border-top: 0;
  }

  .footer-col:last-child h3 {
    margin-bottom: 17px;
  }

  .footer-col:last-child a {
    margin-top: 10px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}