:root {
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --soft: #f7f8fb;
  --blue: #0b7cff;
  --blue-dark: #005bd7;
  --green: #16a34a;
  --card: rgba(255, 255, 255, 0.78);
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 28px;
  border-bottom: 1px solid rgba(229, 231, 235, 0.72);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
}

.brand-mark {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 68% 35%, #fff 0 13%, transparent 14%),
    conic-gradient(from 140deg, #0b7cff, #7c3aed, #16a34a, #0b7cff);
  box-shadow: 0 0 0 4px rgba(11, 124, 255, 0.08);
}

.site-nav {
  display: flex;
  gap: 26px;
  color: #374151;
  font-size: 14px;
  font-weight: 600;
}

.header-action {
  border-radius: 999px;
  padding: 8px 15px;
  background: var(--blue);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}

.hero {
  position: relative;
  overflow: hidden;
  max-width: 1040px;
  margin: 0 auto;
  padding: 118px 24px 72px;
  text-align: center;
}

.hero-glow {
  position: absolute;
  z-index: -1;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  filter: blur(36px);
  opacity: 0.28;
}

.hero-glow-one {
  top: 42px;
  left: 16%;
  background: #7dd3fc;
}

.hero-glow-two {
  top: 72px;
  right: 14%;
  background: #c4b5fd;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin: 0 auto 22px;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy,
.section-copy {
  max-width: 720px;
  margin: 0 auto 30px;
  color: var(--muted);
  font-size: 16px;
}

.url-switcher {
  width: min(880px, 100%);
  margin: 36px auto 26px;
}

.url-line {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  min-height: 86px;
  padding: 10px 12px 10px 34px;
  border: 1px solid rgba(209, 213, 219, 0.95);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
  text-align: left;
}

.url-code {
  display: block;
  overflow: hidden;
  color: #111827;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(17px, 2.1vw, 25px);
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.url-scheme,
.url-prefix {
  display: inline-block;
}

.url-scheme {
  color: #111827;
}

.url-prefix {
  color: var(--blue);
  transition:
    opacity 260ms ease,
    transform 260ms ease,
    color 260ms ease;
}

.url-switcher.is-changing .url-prefix {
  opacity: 0;
  transform: translateY(-8px);
}

.url-prefix.is-new {
  color: var(--blue);
}

.url-path {
  color: #111827;
}

.copy-button,
.primary-button,
.secondary-button {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
}

.copy-button {
  position: relative;
  width: 66px;
  height: 66px;
  min-width: 66px;
  padding: 0;
  background: var(--blue);
  color: #fff;
  box-shadow: 0 8px 22px rgba(11, 124, 255, 0.24);
}

.copy-icon,
.copy-icon::before {
  position: absolute;
  width: 19px;
  height: 23px;
  border: 3px solid #fff;
  border-radius: 4px;
}

.copy-icon {
  top: 24px;
  left: 22px;
}

.copy-icon::before {
  top: -9px;
  left: -9px;
  content: "";
  opacity: 0.78;
}

.copy-button.is-copied::after {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border-radius: inherit;
  background: var(--green);
  content: "✓";
  font-size: 26px;
  line-height: 1;
}

.url-caption {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  flex-wrap: wrap;
}

.url-caption span:first-child {
  color: var(--blue-dark);
  font-weight: 800;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
}

.primary-button {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 10px 24px rgba(11, 124, 255, 0.22);
}

.secondary-button {
  background: #f3f4f6;
  color: #111827;
}

.logo-strip {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  min-height: 86px;
  padding: 18px 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: #111827;
  font-size: 14px;
  font-weight: 800;
  flex-wrap: wrap;
}

.arrow {
  color: var(--blue);
}

.section {
  max-width: 900px;
  margin: 0 auto;
  padding: 76px 24px 36px;
  text-align: center;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
}

.steps,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  text-align: left;
}

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

.card,
.faq-item {
  border: 1px solid rgba(229, 231, 235, 0.75);
  border-radius: 8px;
  background: var(--card);
  box-shadow: 0 12px 34px rgba(15, 23, 42, 0.045);
}

.card {
  min-height: 160px;
  padding: 24px;
}

.card h3,
.faq-item h3 {
  margin-bottom: 8px;
  font-size: 17px;
  line-height: 1.35;
}

.card p,
.faq-item p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
}

.showcase {
  max-width: 980px;
}

.image-section {
  max-width: 980px;
}

.migration-preview {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: center;
  max-width: 820px;
  margin: 0 auto;
  text-align: left;
}

.preview-panel {
  position: relative;
  min-height: 210px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.old-panel {
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.05), transparent 44%),
    #f9fafb;
}

.new-panel {
  background:
    linear-gradient(135deg, rgba(11, 124, 255, 0.14), transparent 46%),
    #f8fbff;
}

.preview-panel span {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.preview-panel strong {
  display: block;
  font-size: clamp(18px, 3vw, 25px);
  line-height: 1.2;
  word-break: break-word;
}

.preview-panel i {
  display: block;
  height: 12px;
  margin-top: 24px;
  border-radius: 999px;
  background: rgba(17, 24, 39, 0.1);
}

.preview-panel i + i {
  width: 58%;
  margin-top: 12px;
}

.new-panel i {
  background: rgba(11, 124, 255, 0.18);
}

.preview-bridge {
  width: 82px;
  height: 82px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 18px 36px rgba(11, 124, 255, 0.26);
}

.preview-bridge span {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
}

.preview-bridge span::before,
.preview-bridge span::after {
  position: absolute;
  content: "";
  background: #fff;
}

.preview-bridge span::before {
  top: 39px;
  left: 22px;
  width: 38px;
  height: 4px;
  border-radius: 999px;
}

.preview-bridge span::after {
  top: 31px;
  left: 46px;
  width: 16px;
  height: 16px;
  border-top: 4px solid #fff;
  border-right: 4px solid #fff;
  background: transparent;
  transform: rotate(45deg);
}

.faq {
  max-width: 820px;
}

.faq-list {
  display: grid;
  gap: 14px;
  text-align: left;
}

.faq-item {
  padding: 24px 26px;
}

.cta {
  max-width: 760px;
  margin: 0 auto;
  padding: 90px 24px 110px;
  text-align: center;
}

.cta p {
  margin-bottom: 26px;
  color: var(--muted);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 12vw;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 760px) {
  .site-header {
    height: auto;
    min-height: 62px;
    padding: 12px 18px;
    gap: 12px;
    flex-wrap: wrap;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 18px;
    font-size: 13px;
  }

  .header-action {
    padding: 7px 12px;
  }

  .hero {
    padding-top: 78px;
  }

  h1 {
    font-size: 42px;
  }

  .url-line {
    grid-template-columns: minmax(0, 1fr) auto;
    min-height: 68px;
    gap: 10px;
    padding: 8px 8px 8px 18px;
  }

  .copy-button {
    width: 50px;
    height: 50px;
    min-width: 50px;
  }

  .copy-icon,
  .copy-icon::before {
    width: 14px;
    height: 18px;
    border-width: 2px;
  }

  .copy-icon {
    top: 19px;
    left: 18px;
  }

  .copy-icon::before {
    top: -7px;
    left: -7px;
  }

  .steps,
  .feature-grid,
  .migration-preview {
    grid-template-columns: 1fr;
  }

  .preview-bridge {
    justify-self: center;
    transform: rotate(90deg);
  }

  .card {
    min-height: auto;
  }

  .site-footer {
    padding: 24px;
    flex-direction: column;
    text-align: center;
  }
}