:root {
  --blue: #0a74d9;
  --blue-deep: #0757aa;
  --blue-soft: #eaf5ff;
  --cyan: #22b8e8;
  --ink: #152033;
  --muted: #5e6b7f;
  --line: #dbe7f4;
  --surface: #ffffff;
  --surface-blue: #f5fbff;
  --shadow: 0 22px 55px rgba(10, 63, 119, 0.13);
  --radius: 8px;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  box-shadow: 0 14px 30px rgba(10, 116, 217, 0.26);
}

.btn-secondary {
  color: var(--blue-deep);
  background: #fff;
  border-color: #b7d6f5;
}

.brand-name {
  display: grid;
  line-height: 1.15;
}

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

.brand-name span {
  color: var(--muted);
  font-size: 12px;
}

.hero-inner {
  min-height: 650px;
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 56px;
  padding: 72px 0 54px;
}

.hero-copy h1 {
  margin: 0;
  max-width: 680px;
  font-size: 56px;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy p {
  margin: 22px 0 0;
  max-width: 620px;
  color: var(--muted);
  font-size: 19px;
}

.hero-ctas {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-points {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.point {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.point strong {
  display: block;
  color: var(--ink);
  font-size: 18px;
}

.point span {
  color: var(--muted);
  font-size: 13px;
}

.product-panel {
  background: #fff;
  border: 1px solid #c9dbed;
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-bar {
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: linear-gradient(180deg, #f9fcff, #edf6ff);
  border-bottom: 1px solid var(--line);
}

.panel-title {
  font-size: 14px;
  font-weight: 800;
}

.entry-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.entry-table th,
.entry-table td {
  padding: 13px 14px;
  border-bottom: 1px solid #edf3f9;
  text-align: left;
}

.entry-table th {
  color: #46556b;
  background: #f8fbff;
  font-weight: 800;
}

.entry-table tr:last-child td {
  border-bottom: 0;
}

.check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: auto;
  height: auto;
  border: 0;
  border-radius: 0;
  position: static;
  color: var(--ink);
  font-weight: 800;
}

.check::before {
  content: "";
  width: 16px;
  height: 16px;
  border: 2px solid var(--blue);
  border-radius: 4px;
  background: #fff;
}

.check::after {
  display: none;
}

.scenario-row {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 42px;
}

.scenario-list {
  display: grid;
  gap: 14px;
}

.scenario-item {
  padding: 18px;
  border-left: 4px solid var(--blue);
  border-radius: 0 8px 8px 0;
  background: #fff;
}

.scenario-item strong {
  display: block;
  margin-bottom: 4px;
}

.scenario-item span {
  color: var(--muted);
}

.quote-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.quote-author strong,
.quote-author span {
  display: block;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-size: 16px;
  line-height: 1.7;
}

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

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

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.header-inner {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(10, 116, 217, 0.18);
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.2;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav a {
  padding: 10px 12px;
  color: #31405a;
  font-size: 14px;
  font-weight: 700;
  border-radius: 6px;
}

.nav a:hover,
.nav a.active,
.nav a[aria-current="page"] {
  color: var(--blue);
  background: var(--blue-soft);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  color: var(--ink);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  box-shadow: 0 14px 30px rgba(10, 116, 217, 0.26);
}

.button-secondary {
  color: var(--blue-deep);
  background: #fff;
  border-color: #b7d6f5;
}

.hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, #f6fbff 0%, #fff 58%),
    radial-gradient(circle at 82% 18%, rgba(34, 184, 232, 0.18), transparent 35%);
}

.hero-grid {
  min-height: 650px;
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 56px;
  padding: 72px 0 54px;
}

.hero h1,
.page-hero h1 {
  margin: 0;
  max-width: 680px;
  font-size: 56px;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero p,
.page-hero p {
  margin: 22px 0 0;
  max-width: 620px;
  color: var(--muted);
  font-size: 19px;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.trust-row {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.trust-item {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.trust-item strong {
  display: block;
  color: var(--ink);
  font-size: 18px;
}

.trust-item span {
  color: var(--muted);
  font-size: 13px;
}

.app-window {
  background: #fff;
  border: 1px solid #c9dbed;
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.window-title {
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: linear-gradient(180deg, #f9fcff, #edf6ff);
  border-bottom: 1px solid var(--line);
}

.window-title strong {
  font-size: 14px;
}

.window-dots {
  display: flex;
  gap: 7px;
}

.window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #b8c8d8;
}

.tabs {
  display: flex;
  gap: 6px;
  padding: 12px 14px 0;
  border-bottom: 1px solid var(--line);
}

.tabs span {
  padding: 8px 12px;
  border-radius: 6px 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.tabs .selected {
  color: var(--blue-deep);
  background: var(--blue-soft);
}

.entry-list {
  padding: 14px;
}

.entry-row {
  display: grid;
  grid-template-columns: 24px 1fr 96px;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  border-bottom: 1px solid #edf3f9;
}

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

.check {
  width: 18px;
  height: 18px;
  border: 2px solid var(--blue);
  border-radius: 4px;
  position: relative;
}

.check::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: solid var(--blue);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.entry-name {
  font-weight: 800;
  line-height: 1.35;
}

.entry-path {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.status {
  justify-self: end;
  padding: 4px 8px;
  border-radius: 6px;
  color: #0d6c35;
  background: #e8f7ee;
  font-size: 12px;
  font-weight: 800;
}

.status.warn {
  color: #9a5a00;
  background: #fff4dc;
}

.section {
  padding: 76px 0;
}

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

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

.section-head {
  max-width: 720px;
  margin-bottom: 34px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head h2,
.split h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: 0;
}

.section-head p,
.split p {
  margin: 14px 0 0;
  color: var(--muted);
}

.grid-3,
.grid-2,
.grid-4 {
  display: grid;
  gap: 18px;
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.quote,
.step,
.download-card,
.faq-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.card,
.quote,
.step,
.download-card {
  padding: 24px;
}

.card h3,
.quote h3,
.step h3,
.download-card h3 {
  margin: 14px 0 8px;
  font-size: 20px;
  line-height: 1.3;
}

.card p,
.quote p,
.step p,
.download-card p,
.faq-item p,
.fineprint {
  color: var(--muted);
}

.icon-tile {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}

.icon-box {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}

.icon-box svg {
  width: 25px;
  height: 25px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-tile svg {
  width: 25px;
  height: 25px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
  align-items: center;
}

.check-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.check-list li {
  position: relative;
  padding-left: 30px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 5px;
  background: var(--blue);
}

.check-list li::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  width: 4px;
  height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.quote {
  min-height: 250px;
}

.avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, #0a74d9, #22b8e8);
  font-weight: 900;
}

.quote blockquote {
  margin: 18px 0;
  color: #26354c;
}

.quote footer {
  color: var(--muted);
  font-size: 14px;
}

.page-hero {
  padding: 74px 0 54px;
  background: linear-gradient(180deg, #f3faff 0%, #fff 100%);
  border-bottom: 1px solid var(--line);
}

.breadcrumb {
  margin-bottom: 18px;
  color: var(--blue-deep);
  font-size: 14px;
  font-weight: 800;
}

.feature-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.feature-table th,
.feature-table td {
  padding: 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.feature-table th {
  background: #f4f9fe;
  color: #24344c;
}

.feature-table tr:last-child td {
  border-bottom: 0;
}

.code-box {
  padding: 20px;
  color: #d9f4ff;
  background: #142033;
  border-radius: 8px;
  overflow-x: auto;
  font-family: Consolas, "Courier New", monospace;
  font-size: 14px;
  line-height: 1.65;
}

.download-layout {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 24px;
  align-items: start;
}

.download-card.highlight {
  border-color: #9bcaf5;
  box-shadow: var(--shadow);
}

.download-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0;
}

.download-meta div {
  padding: 14px;
  border-radius: 8px;
  background: var(--blue-soft);
}

.download-meta strong {
  display: block;
  color: var(--ink);
}

.source-note {
  margin-top: 18px;
  padding: 14px;
  border-left: 4px solid var(--blue);
  background: #f6fbff;
  color: var(--muted);
  border-radius: 0 8px 8px 0;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 0;
  overflow: hidden;
}

.faq-item h3 {
  margin: 0;
  padding: 18px 20px;
  font-size: 18px;
  background: #f8fbff;
}

.faq-item p {
  margin: 0;
  padding: 0 20px 20px;
}

.cta-band {
  padding: 56px 0;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue));
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cta-inner h2 {
  margin: 0;
  font-size: 30px;
}

.cta-inner p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.82);
}

.cta-band .button-secondary {
  border-color: rgba(255, 255, 255, 0.75);
}

.cta-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cta-band .btn {
  color: var(--blue-deep);
  background: #fff;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.14);
}

.site-footer {
  padding: 44px 0 28px;
  color: #506078;
  background: #f4f8fc;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(360px, 1.35fr) minmax(150px, 0.55fr) minmax(180px, 0.65fr);
  gap: 42px;
  align-items: start;
}

.footer-brand p {
  max-width: 620px;
  margin: 18px 0 0;
  color: #455673;
}

.footer-col {
  display: grid;
  gap: 9px;
  font-size: 14px;
}

.footer-col strong {
  margin-bottom: 4px;
  color: #17233a;
  font-size: 15px;
}

.footer-col a {
  color: #33445e;
  font-weight: 700;
}

.footer-col a:hover {
  color: var(--blue);
}

.copyright {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: #5d6b7f;
  font-size: 14px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.is-open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(12, 24, 42, 0.52);
}

.modal-panel {
  position: relative;
  width: min(720px, 100%);
  max-height: min(720px, calc(100vh - 40px));
  overflow: auto;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.25);
}

.modal-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 24px 10px;
}

.modal-head h2 {
  margin: 0;
  font-size: 26px;
}

.modal-head p {
  margin: 8px 0 0;
  color: var(--muted);
}

.modal-close {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

.qr-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding: 18px 24px 24px;
}

.qr-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f9fcff;
  text-align: center;
}

.qr-card img {
  width: 176px;
  height: 176px;
  margin: 0 auto 12px;
  padding: 10px;
  background: #fff;
  border: 1px solid #dce8f4;
  border-radius: 8px;
}

.qr-card strong {
  display: block;
  color: var(--ink);
}

.qr-card span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.modal-note {
  margin: 0 24px 24px;
  padding: 12px 14px;
  border-radius: 8px;
  color: #1b5d34;
  background: #edf9f1;
  font-size: 14px;
}

@media (max-width: 920px) {
  .header-inner {
    height: auto;
    padding: 12px 0;
    align-items: flex-start;
  }

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

  .nav {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 68px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow);
  }

  .nav.is-open {
    display: flex;
  }

  .header-actions .button {
    display: none;
  }

  .hero-grid,
  .hero-inner,
  .split,
  .scenario-row,
  .download-layout,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-grid {
    min-height: auto;
    padding-top: 48px;
  }

  .hero-inner {
    min-height: auto;
    padding-top: 48px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 42px;
  }

  .grid-4,
  .grid-3,
  .grid-2,
  .hero-points,
  .trust-row {
    grid-template-columns: 1fr;
  }

  .cta-inner,
  .cta-band .container {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-brand p {
    max-width: 100%;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, 1160px);
  }

  .hero h1,
  .page-hero h1 {
    font-size: 34px;
  }

  .hero p,
  .page-hero p {
    font-size: 17px;
  }

  .section {
    padding: 54px 0;
  }

  .section-head h2,
  .split h2 {
    font-size: 28px;
  }

  .entry-row {
    grid-template-columns: 24px 1fr;
  }

  .status {
    grid-column: 2;
    justify-self: start;
  }

  .qr-grid,
  .download-meta {
    grid-template-columns: 1fr;
  }
}

.entry-table .check {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  width: auto;
  height: auto;
  border: 0;
  position: static;
  white-space: nowrap;
}

.entry-table .check::before {
  content: "";
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  border: 2px solid var(--blue);
  border-radius: 4px;
  background: #fff;
}

.entry-table .check::after {
  display: none;
}