:root {
  color-scheme: light;
  --paper: #f6f7fb;
  --paper-deep: #eceef5;
  --surface: #ffffff;
  --ink: #11131b;
  --ink-soft: #4f5668;
  --ink-faint: #747c8e;
  --line: #dfe3ec;
  --line-strong: #cbd1df;
  --indigo: #0891b2;
  --indigo-dark: #0e7490;
  --indigo-soft: #e0f6fa;
  --douyin: #20242c;
  --kuaishou: #ff6037;
  --weixin: #08a456;
  --bilibili: #e05282;
  --xiaohongshu: #ef334e;
  --display: ui-rounded, "SF Pro Rounded", "PingFang SC", "Microsoft YaHei", sans-serif;
  --body: system-ui, -apple-system, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --shadow: 0 24px 70px rgb(31 35 55 / 12%), 0 2px 8px rgb(31 35 55 / 6%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgb(8 145 178 / 4%) 1px, transparent 1px) 0 0 / 72px 72px,
    linear-gradient(rgb(8 145 178 / 4%) 1px, transparent 1px) 0 0 / 72px 72px,
    var(--paper);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
input,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgb(79 70 229 / 35%);
  outline-offset: 3px;
}

code {
  font-family: var(--mono);
}

.shell {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 9px 12px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 40;
  top: 0;
  border-bottom: 1px solid rgb(203 209 223 / 80%);
  background: rgb(246 247 251 / 90%);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 72px;
  gap: 30px;
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 11px;
  width: max-content;
}

.brand > span:last-child {
  display: flex;
  flex-direction: column;
  line-height: 1.12;
}

.brand strong {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.brand small {
  margin-top: 4px;
  color: var(--ink-faint);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.09em;
}

.brand-dots {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 11px;
  border: 1px solid #dfe2f3;
  border-radius: 12px;
  background: #edeefe;
}

.brand-dots i,
.platform-links i {
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.dot-douyin { background: var(--douyin); }
.dot-kuaishou { background: var(--kuaishou); }
.dot-weixin { background: var(--weixin); }
.dot-bilibili { background: var(--bilibili); }
.dot-xiaohongshu { background: var(--xiaohongshu); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgb(255 255 255 / 72%);
}

.main-nav a {
  padding: 7px 14px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 650;
}

.main-nav a:hover {
  background: var(--surface);
  color: var(--ink);
}

.header-download {
  justify-self: end;
  padding: 10px 16px;
  border: 1px solid var(--ink);
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  font-weight: 720;
  transition: transform 160ms ease, background 160ms ease;
}

.header-download:hover {
  background: var(--indigo-dark);
  transform: translateY(-1px);
}

.hero {
  position: relative;
  min-height: 760px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero::after {
  position: absolute;
  z-index: -1;
  right: -110px;
  bottom: -230px;
  width: 620px;
  height: 620px;
  border: 90px solid rgb(79 70 229 / 6%);
  border-radius: 50%;
  content: "";
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(360px, 0.82fr) minmax(560px, 1.18fr);
  align-items: center;
  gap: 70px;
  padding-block: 104px 92px;
}

.hero-copy {
  max-width: 520px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 15px;
  color: var(--indigo-dark);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
}

.eyebrow span {
  width: 28px;
  height: 2px;
  border-radius: 99px;
  background: var(--indigo);
}

.hero h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(54px, 5.1vw, 78px);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 1.02;
}

.hero h1 em {
  color: var(--indigo);
  font-style: normal;
}

.hero-lead {
  max-width: 490px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: stretch;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 750;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--indigo);
  color: #fff;
  box-shadow: 0 13px 30px rgb(79 70 229 / 25%);
}

.button-primary small {
  padding-left: 10px;
  border-left: 1px solid rgb(255 255 255 / 32%);
  color: rgb(255 255 255 / 75%);
  font-size: 10px;
  font-weight: 600;
}

.download-icon {
  font-size: 20px;
  line-height: 1;
}

.button-secondary {
  border-color: var(--line-strong);
  background: rgb(255 255 255 / 72%);
  color: var(--ink);
}

.button-secondary:hover {
  border-color: var(--indigo);
  box-shadow: 0 8px 24px rgb(31 35 55 / 8%);
}

.hero-facts {
  display: grid;
  gap: 9px;
  margin: 30px 0 0;
  padding: 0;
  color: var(--ink-soft);
  font-size: 12px;
  list-style: none;
}

.hero-facts li {
  position: relative;
  padding-left: 18px;
}

.hero-facts li::before {
  position: absolute;
  top: 0.69em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--weixin);
  content: "";
  transform: translateY(-50%);
}

.hero-facts span {
  margin-right: 8px;
  color: var(--ink);
  font-weight: 750;
}

.hero-visual {
  position: relative;
  perspective: 1600px;
}

.window-frame,
.screen-frame {
  overflow: hidden;
  border: 1px solid #cfd4e3;
  border-radius: 17px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.window-frame {
  transform: rotateY(-5deg) rotateX(1deg);
  transform-origin: left center;
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 13px;
  border-bottom: 1px solid var(--line);
  background: #f9faff;
}

.window-bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #c3c8d6;
}

.window-bar span:nth-child(1) { background: #ff6b6b; }
.window-bar span:nth-child(2) { background: #f5b942; }
.window-bar span:nth-child(3) { background: #24b879; }

.window-bar small {
  margin-left: 7px;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 9px;
}

.flow-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 9px;
  border: 1px solid rgb(203 209 223 / 88%);
  border-radius: 12px;
  background: rgb(255 255 255 / 93%);
  box-shadow: 0 12px 34px rgb(31 35 55 / 14%);
  backdrop-filter: blur(14px);
}

.flow-badge-top {
  top: -22px;
  right: -20px;
  padding: 10px 14px;
}

.flow-badge-top strong {
  font-family: var(--mono);
  font-size: 24px;
  line-height: 1;
}

.flow-badge-top span,
.flow-badge-bottom span {
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
}

.flow-badge-bottom {
  bottom: -18px;
  left: 50px;
  padding: 10px 13px;
}

.flow-badge-bottom i {
  width: 9px;
  height: 9px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: var(--weixin);
  box-shadow: 0 0 0 3px rgb(8 164 86 / 15%);
}

.route-field {
  position: absolute;
  z-index: 1;
  top: 122px;
  right: 0;
  left: 0;
  height: 390px;
  pointer-events: none;
}

.route {
  --route-color: var(--indigo);
  position: absolute;
  right: -8%;
  left: 48%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--route-color) 24%, var(--route-color) 78%, transparent);
  opacity: 0.28;
  transform: rotate(-8deg) scaleX(0);
  transform-origin: left center;
  animation: draw-route 900ms cubic-bezier(.2,.8,.2,1) forwards;
}

.route::after {
  position: absolute;
  top: 50%;
  right: 16%;
  width: 8px;
  height: 8px;
  border: 2px solid var(--paper);
  border-radius: 50%;
  background: var(--route-color);
  content: "";
  transform: translateY(-50%);
}

.route-1 { top: 4%; --route-color: var(--douyin); animation-delay: 80ms; }
.route-2 { top: 24%; --route-color: var(--kuaishou); animation-delay: 150ms; }
.route-3 { top: 44%; --route-color: var(--weixin); animation-delay: 220ms; }
.route-4 { top: 64%; --route-color: var(--bilibili); animation-delay: 290ms; }
.route-5 { top: 84%; --route-color: var(--xiaohongshu); animation-delay: 360ms; }

@keyframes draw-route {
  to { transform: rotate(-8deg) scaleX(1); }
}

.trust-strip {
  border-bottom: 1px solid var(--line);
  background: rgb(255 255 255 / 70%);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.trust-grid > div {
  display: flex;
  align-items: baseline;
  gap: 11px;
  padding: 26px 28px;
  border-left: 1px solid var(--line);
}

.trust-grid > div:last-child {
  border-right: 1px solid var(--line);
}

.trust-grid strong {
  font-family: var(--mono);
  font-size: 21px;
  letter-spacing: -0.04em;
}

.trust-grid span {
  color: var(--ink-faint);
  font-size: 11px;
  font-weight: 650;
}

.section {
  padding-block: 116px;
  border-bottom: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: end;
  gap: 70px;
  margin-bottom: 54px;
}

.section-heading h2,
.notice-intro h2,
.faq-layout h2,
.download-copy h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(36px, 4.1vw, 56px);
  font-weight: 880;
  letter-spacing: -0.05em;
  line-height: 1.1;
}

.section-heading > p {
  max-width: 500px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.section-heading-compact {
  grid-template-columns: 1fr;
}

.install-section {
  background: rgb(255 255 255 / 52%);
}

.install-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
  align-items: start;
  gap: 70px;
}

.step-list {
  position: relative;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step-list::before {
  position: absolute;
  top: 30px;
  bottom: 30px;
  left: 31px;
  width: 1px;
  background: linear-gradient(var(--indigo), var(--line));
  content: "";
}

.step-card {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 24px;
  padding: 0 0 42px;
}

.step-card:last-child {
  padding-bottom: 0;
}

.step-number {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  align-self: start;
  width: 64px;
  height: 64px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--paper);
  color: var(--indigo);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 800;
}

.step-card h3,
.use-card h3 {
  margin: 4px 0 7px;
  font-family: var(--display);
  font-size: 20px;
  letter-spacing: -0.025em;
}

.step-card p,
.use-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.step-card code {
  padding: 2px 5px;
  border-radius: 5px;
  background: var(--paper-deep);
  color: var(--indigo-dark);
  font-size: 12px;
}

.inline-download {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 13px;
  color: var(--indigo);
  font-size: 13px;
  font-weight: 760;
}

.inline-download span {
  font-size: 17px;
}

.address-row {
  display: flex;
  align-items: center;
  max-width: 380px;
  margin-top: 9px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
}

.address-row code {
  flex: 1 1 auto;
  padding: 8px 11px;
  background: transparent;
  color: var(--ink);
}

.address-row button,
.checksum button {
  flex: 0 0 auto;
  border: 0;
  border-left: 1px solid var(--line);
  background: transparent;
  color: var(--indigo);
  font-size: 11px;
  font-weight: 750;
  cursor: pointer;
}

.address-row button {
  align-self: stretch;
  padding: 0 12px;
}

.install-demo {
  position: sticky;
  top: 104px;
}

.demo-browser {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.demo-titlebar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 42px;
  padding: 0 15px;
  border-bottom: 1px solid var(--line);
  background: #f4f5f8;
}

.demo-titlebar i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #c6cad3;
}

.demo-titlebar span {
  margin-left: 8px;
  color: var(--ink-faint);
  font-size: 10px;
}

.demo-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 24px 13px;
}

.demo-toolbar strong {
  font-family: var(--display);
  font-size: 18px;
}

.demo-switch {
  display: flex;
  align-items: center;
  gap: 8px;
}

.demo-switch small {
  color: var(--ink-soft);
  font-size: 10px;
}

.demo-switch i {
  position: relative;
  width: 31px;
  height: 17px;
  border-radius: 99px;
  background: var(--indigo);
}

.demo-switch i::after {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #fff;
  content: "";
}

.demo-actions {
  display: flex;
  gap: 7px;
  padding: 0 24px 22px;
}

.demo-actions span {
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink-soft);
  font-size: 9px;
}

.demo-actions span:first-child {
  border-color: #c6c4ff;
  background: var(--indigo-soft);
  color: var(--indigo-dark);
  font-weight: 750;
}

.demo-extension-card {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  align-items: center;
  gap: 13px;
  margin: 0 24px 24px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fafbfe;
}

.demo-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: var(--indigo-soft);
  color: var(--indigo-dark);
  font-family: var(--display);
  font-size: 18px;
  font-weight: 900;
}

.demo-extension-card > div:nth-child(2) {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.demo-extension-card strong {
  font-size: 12px;
}

.demo-extension-card small {
  margin-top: 3px;
  color: var(--ink-faint);
  font-size: 9px;
}

.enabled-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--weixin);
  box-shadow: 0 0 0 4px rgb(8 164 86 / 12%);
}

.folder-note {
  display: flex;
  align-items: center;
  gap: 12px;
  width: max-content;
  max-width: calc(100% - 48px);
  margin: -7px auto 0;
  padding: 10px 15px;
  border: 1px solid #c8c6ff;
  border-radius: 10px;
  background: #f1f0ff;
  color: var(--indigo-dark);
  box-shadow: 0 8px 24px rgb(79 70 229 / 12%);
}

.folder-note > span {
  font-size: 23px;
}

.folder-note div {
  display: flex;
  flex-direction: column;
}

.folder-note strong {
  font-size: 10px;
}

.folder-note code {
  margin-top: 2px;
  font-size: 9px;
}

.use-section {
  background: var(--ink);
  color: #fff;
}

.use-section .section-kicker {
  color: #9e99ff;
}

.use-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgb(255 255 255 / 18%);
  border-bottom: 1px solid rgb(255 255 255 / 18%);
}

.use-card {
  min-height: 258px;
  padding: 34px 28px;
  border-left: 1px solid rgb(255 255 255 / 18%);
}

.use-card:last-child {
  border-right: 1px solid rgb(255 255 255 / 18%);
}

.use-card > span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 44px;
  border: 1px solid rgb(255 255 255 / 24%);
  border-radius: 50%;
  color: #a7a3ff;
  font-family: var(--mono);
  font-size: 11px;
}

.use-card h3 {
  color: #fff;
}

.use-card p {
  color: rgb(255 255 255 / 62%);
  font-size: 13px;
}

.platform-links {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin-top: 38px;
}

.platform-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 10px;
  color: rgb(255 255 255 / 68%);
  font-size: 11px;
  font-weight: 650;
}

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

.platform-links a span {
  opacity: 0.5;
}

.screens-section {
  background: rgb(255 255 255 / 54%);
}

.screen-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.screen-gallery figure {
  margin: 0;
}

.screen-frame {
  border-radius: 14px;
  box-shadow: 0 20px 55px rgb(31 35 55 / 10%);
}

.screen-gallery figcaption {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 18px 5px 0;
}

.screen-gallery figcaption > span {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--indigo);
  font-family: var(--mono);
  font-size: 9px;
}

.screen-gallery figcaption div {
  display: flex;
  flex-direction: column;
}

.screen-gallery figcaption strong {
  font-size: 13px;
}

.screen-gallery figcaption small {
  margin-top: 2px;
  color: var(--ink-faint);
  font-size: 11px;
}

.notice-section {
  background: #f0f1f7;
}

.notice-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 100px;
}

.notice-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
  list-style: none;
}

.notice-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-strong);
}

.notice-list li > span {
  color: var(--indigo);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 800;
}

.notice-list strong {
  font-size: 14px;
}

.notice-list p {
  margin: 5px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.faq-section {
  background: var(--surface);
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 110px;
}

.faq-lead {
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.faq-list {
  border-top: 1px solid var(--line-strong);
}

.faq-list details {
  border-bottom: 1px solid var(--line-strong);
}

.faq-list summary {
  position: relative;
  padding: 24px 42px 24px 0;
  font-family: var(--display);
  font-size: 16px;
  font-weight: 760;
  cursor: pointer;
  list-style: none;
}

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

.faq-list summary::after {
  position: absolute;
  top: 23px;
  right: 5px;
  color: var(--indigo);
  content: "+";
  font-family: var(--mono);
  font-size: 18px;
}

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

.faq-list details p {
  margin: -6px 50px 24px 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.faq-list details code {
  color: var(--indigo-dark);
  font-size: 11px;
}

.download-section {
  padding-block: 84px;
  background: var(--paper);
}

.download-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 80px;
  overflow: hidden;
  padding: 62px 70px;
  border-radius: 24px;
  background: var(--indigo);
  color: #fff;
}

.download-panel::before,
.download-panel::after {
  position: absolute;
  border: 1px solid rgb(255 255 255 / 13%);
  border-radius: 50%;
  content: "";
}

.download-panel::before {
  top: -180px;
  right: 60px;
  width: 430px;
  height: 430px;
}

.download-panel::after {
  right: -110px;
  bottom: -240px;
  width: 500px;
  height: 500px;
}

.download-copy,
.download-orb {
  position: relative;
  z-index: 1;
}

.download-copy .section-kicker {
  color: #cfcdff;
}

.download-copy p:not(.section-kicker) {
  margin: 16px 0 0;
  color: rgb(255 255 255 / 74%);
  font-size: 14px;
}

.file-meta {
  display: flex;
  gap: 9px;
  margin-top: 19px;
}

.file-meta span {
  padding: 5px 9px;
  border: 1px solid rgb(255 255 255 / 20%);
  border-radius: 6px;
  color: rgb(255 255 255 / 72%);
  font-family: var(--mono);
  font-size: 9px;
}

.checksum {
  display: flex;
  align-items: center;
  max-width: 680px;
  margin-top: 16px;
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 18%);
  border-radius: 8px;
  background: rgb(0 0 0 / 10%);
}

.checksum > span {
  flex: 0 0 auto;
  padding: 8px 10px;
  border-right: 1px solid rgb(255 255 255 / 18%);
  color: rgb(255 255 255 / 62%);
  font-family: var(--mono);
  font-size: 8px;
}

.checksum code {
  flex: 1 1 auto;
  min-width: 0;
  padding: 8px 10px;
  overflow: hidden;
  color: rgb(255 255 255 / 70%);
  font-size: 8px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.checksum button {
  align-self: stretch;
  padding: 0 11px;
  border-left-color: rgb(255 255 255 / 18%);
  color: #fff;
}

.download-orb {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 188px;
  height: 188px;
  border: 1px solid rgb(255 255 255 / 28%);
  border-radius: 50%;
  background: rgb(255 255 255 / 12%);
  box-shadow: inset 0 0 0 12px rgb(255 255 255 / 4%);
  transition: transform 220ms ease, background 220ms ease;
}

.download-orb:hover {
  background: rgb(255 255 255 / 19%);
  transform: rotate(-3deg) scale(1.03);
}

.download-orb > span {
  margin-bottom: 4px;
  font-size: 30px;
  line-height: 1;
}

.download-orb strong {
  font-size: 16px;
}

.download-orb small {
  margin-top: 4px;
  color: rgb(255 255 255 / 65%);
  font-family: var(--mono);
  font-size: 8px;
}

.site-footer {
  padding-block: 34px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.site-footer .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.footer-brand .brand-dots {
  padding: 8px 9px;
}

.footer-brand strong {
  font-size: 15px;
}

.site-footer p {
  margin: 0;
  color: var(--ink-faint);
  font-size: 11px;
}

.copy-toast {
  position: fixed;
  z-index: 80;
  right: 22px;
  bottom: 22px;
  padding: 10px 14px;
  border-radius: 9px;
  background: var(--ink);
  color: #fff;
  font-size: 12px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 160ms ease, transform 160ms ease;
}

.copy-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1050px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 65px;
    padding-top: 84px;
  }

  .hero-copy {
    max-width: 680px;
  }

  .hero-visual {
    width: min(780px, 100%);
    margin-inline: auto;
  }

  .route {
    left: 12%;
  }

  .install-layout {
    grid-template-columns: 1fr;
  }

  .install-demo {
    position: relative;
    top: auto;
    max-width: 620px;
    margin: 10px auto 0;
  }

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

  .use-card:nth-child(3) {
    border-top: 1px solid rgb(255 255 255 / 18%);
  }

  .use-card:nth-child(4) {
    border-top: 1px solid rgb(255 255 255 / 18%);
    border-right: 1px solid rgb(255 255 255 / 18%);
  }

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

@media (max-width: 800px) {
  .shell {
    width: min(100% - 32px, 680px);
  }

  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .main-nav {
    display: none;
  }

  .section {
    padding-block: 88px;
  }

  .section-heading,
  .notice-grid,
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .trust-grid > div:nth-child(3),
  .trust-grid > div:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .screen-gallery {
    grid-template-columns: 1fr;
  }

  .download-panel {
    grid-template-columns: 1fr;
    justify-items: start;
    padding: 50px 42px;
  }

  .download-orb {
    width: auto;
    height: auto;
    flex-direction: row;
    gap: 10px;
    padding: 14px 18px;
    border-radius: 12px;
    box-shadow: none;
  }

  .download-orb > span {
    margin: 0;
    font-size: 21px;
  }

  .download-orb small {
    display: none;
  }
}

@media (max-width: 560px) {
  .shell {
    width: calc(100% - 24px);
  }

  .site-header .brand small,
  .header-download {
    display: none;
  }

  .header-inner {
    min-height: 62px;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid {
    gap: 48px;
    padding-block: 64px 70px;
  }

  .hero h1 {
    font-size: 48px;
  }

  .hero-lead {
    font-size: 16px;
  }

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

  .button {
    width: 100%;
  }

  .flow-badge {
    display: none;
  }

  .window-frame {
    border-radius: 10px;
    transform: none;
  }

  .window-bar {
    height: 26px;
  }

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

  .trust-grid > div {
    padding: 18px 16px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .section {
    padding-block: 70px;
  }

  .section-heading {
    margin-bottom: 38px;
  }

  .section-heading h2,
  .notice-intro h2,
  .faq-layout h2,
  .download-copy h2 {
    font-size: 36px;
  }

  .step-card {
    grid-template-columns: 48px 1fr;
    gap: 16px;
  }

  .step-number {
    width: 48px;
    height: 48px;
  }

  .step-list::before {
    left: 23px;
  }

  .address-row {
    max-width: 100%;
  }

  .address-row code {
    overflow: hidden;
    font-size: 10px;
    text-overflow: ellipsis;
  }

  .demo-toolbar,
  .demo-actions,
  .demo-extension-card {
    margin-inline: 14px;
  }

  .demo-toolbar {
    padding-inline: 0;
  }

  .demo-actions {
    padding-inline: 0;
  }

  .demo-extension-card {
    margin-bottom: 14px;
  }

  .demo-actions span:nth-child(n + 2) {
    display: none;
  }

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

  .use-card {
    min-height: auto;
    padding: 26px 20px;
    border-right: 1px solid rgb(255 255 255 / 18%);
    border-bottom: 1px solid rgb(255 255 255 / 18%);
  }

  .use-card > span {
    margin-bottom: 22px;
  }

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

  .platform-links a:last-child {
    grid-column: 1 / -1;
  }

  .notice-grid {
    gap: 38px;
  }

  .notice-list li {
    grid-template-columns: 34px 1fr;
  }

  .faq-list details p {
    margin-right: 0;
  }

  .download-section {
    padding-block: 36px;
  }

  .download-panel {
    padding: 40px 24px;
    border-radius: 16px;
  }

  .checksum > span {
    display: none;
  }

  .site-footer .shell {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

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

/* 页脚：法律与联系链接 */
.footer-inner {
  flex-wrap: wrap;
}
.footer-links {
  display: flex;
  gap: 22px;
  flex: 1;
  justify-content: center;
}
.footer-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14px;
}
.footer-links a:hover {
  color: var(--indigo-dark);
}
.footer-legal {
  color: var(--ink-faint);
  font-size: 13px;
  text-align: right;
  line-height: 1.7;
  margin: 0;
}
.footer-beian {
  color: var(--ink-faint);
}
@media (max-width: 640px) {
  .site-footer .shell { flex-direction: column; align-items: flex-start; gap: 18px; }
  .footer-links { justify-content: flex-start; flex-basis: 100%; }
  .footer-legal { text-align: left; }
}