/* 企资汇官网的视觉令牌：独立官网经确认使用 #2563EB 作为主品牌色。 */
:root {
  --qm-page-bg: #f6f8fc;
  --qm-card-bg: #ffffff;
  --qm-panel-bg: #eef3f9;
  --qm-border: #d9e2ef;
  --qm-border-strong: #b9c8dd;
  --qm-text-primary: #1f2a37;
  --qm-text-secondary: #5d6b7c;
  --qm-text-tertiary: #8a97a8;
  --qm-primary: #2563eb;
  --qm-primary-hover: #1d4ed8;
  --qm-primary-soft-bg: #eaf2ff;
  --qm-primary-soft-text: #1d4ed8;
  --qm-primary-on-solid: #ffffff;
  --qm-space-xs: 4px;
  --qm-space-sm: 8px;
  --qm-space-md: 16px;
  --qm-space-lg: 24px;
  --qm-space-xl: 48px;
  --qm-radius-card: 12px;
  --qm-radius-control: 8px;
  --qm-content-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--qm-page-bg);
  color: var(--qm-text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
}

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

button {
  color: inherit;
  font: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--qm-primary-soft-text);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: var(--qm-space-sm);
  left: var(--qm-space-sm);
  z-index: 10;
  padding: var(--qm-space-sm) var(--qm-space-md);
  border-radius: var(--qm-radius-control);
  background: var(--qm-primary);
  color: var(--qm-primary-on-solid);
  transform: translateY(-200%);
}

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

.site-container {
  width: min(calc(100% - 48px), var(--qm-content-width));
  margin: 0 auto;
}

.section {
  padding: 88px 0;
}

.section--panel {
  background: var(--qm-panel-bg);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid var(--qm-border);
  background: var(--qm-card-bg);
}

.site-header__inner {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: var(--qm-space-lg);
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
}

.brand__logo {
  /* 透明横版 Logo 在固定导航框内完整缩放，避免原始画布留白造成视觉偏移。 */
  display: block;
  width: 176px;
  height: 48px;
  object-fit: contain;
  object-position: center;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.site-nav a {
  color: var(--qm-text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.site-nav a:hover {
  color: var(--qm-primary);
}

.nav-toggle {
  display: none;
}

.hero {
  overflow: hidden;
  background: var(--qm-card-bg);
}

.hero__layout,
.sea-section__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  align-items: center;
  gap: 72px;
}

.eyebrow {
  margin: 0 0 var(--qm-space-md);
  color: var(--qm-primary-soft-text);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

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

h1,
h2,
h3 {
  color: var(--qm-text-primary);
  font-weight: 500;
}

h1 {
  max-width: 640px;
  margin-bottom: var(--qm-space-lg);
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

h2 {
  margin-bottom: var(--qm-space-md);
  font-size: 32px;
  line-height: 1.35;
}

h3 {
  margin-bottom: var(--qm-space-sm);
  font-size: 20px;
  line-height: 1.45;
}

.hero__summary,
.section-heading > p,
.sea-section__content > p,
.feature-card p,
.sea-steps p,
.download-card p,
.site-footer p,
.privacy-dialog__content p {
  color: var(--qm-text-secondary);
}

.hero__summary {
  max-width: 580px;
  margin-bottom: 32px;
  font-size: 18px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--qm-space-md);
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--qm-radius-control);
  font-size: 15px;
  font-weight: 500;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.button--primary {
  background: var(--qm-primary);
  color: var(--qm-primary-on-solid);
}

.button--primary:hover {
  background: var(--qm-primary-hover);
}

.button--secondary {
  border-color: var(--qm-border-strong);
  background: var(--qm-card-bg);
  color: var(--qm-primary-soft-text);
}

.button--secondary:hover {
  border-color: var(--qm-primary);
  background: var(--qm-primary-soft-bg);
}

.hero__visual {
  padding: 28px;
  border: 1px solid var(--qm-border);
  border-radius: var(--qm-radius-card);
  background: var(--qm-panel-bg);
}

.hero__visual-header {
  display: flex;
  align-items: center;
  gap: var(--qm-space-sm);
  padding-bottom: var(--qm-space-md);
  border-bottom: 1px solid var(--qm-border);
  color: var(--qm-text-primary);
  font-size: 16px;
  font-weight: 500;
}

.hero__visual-header img {
  /* 首屏概览内沿用同一居中规则，确保图标与导航品牌的视觉重心一致。 */
  display: block;
  width: 142px;
  height: 44px;
  object-fit: contain;
  object-position: center;
}

.hero__visual-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--qm-space-md);
  margin: var(--qm-space-md) 0;
}

.visual-stat {
  padding: var(--qm-space-md);
  border: 1px solid var(--qm-border);
  border-radius: var(--qm-radius-control);
  background: var(--qm-card-bg);
}

.visual-stat__label {
  display: block;
  margin-bottom: var(--qm-space-xs);
  color: var(--qm-text-tertiary);
  font-size: 12px;
}

.visual-stat strong {
  color: var(--qm-primary-soft-text);
  font-size: 17px;
  font-weight: 500;
}

.hero__visual-flow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--qm-space-sm);
  padding: var(--qm-space-md);
  border-radius: var(--qm-radius-control);
  background: var(--qm-primary-soft-bg);
  color: var(--qm-primary-soft-text);
  font-size: 13px;
  font-weight: 500;
}

.hero__visual-flow i {
  width: 20px;
  height: 1px;
  background: var(--qm-primary);
}

.section-heading {
  max-width: 680px;
  margin-bottom: 40px;
}

.section-heading > p {
  margin-bottom: 0;
}

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

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--qm-space-lg);
  max-width: 960px;
  margin: 0 auto;
}

.feature-card,
.download-card {
  padding: var(--qm-space-lg);
  border: 1px solid var(--qm-border);
  border-radius: var(--qm-radius-card);
  background: var(--qm-card-bg);
}

.feature-card__number {
  display: inline-flex;
  min-width: 36px;
  justify-content: center;
  margin-bottom: 48px;
  padding: var(--qm-space-xs) var(--qm-space-sm);
  border-radius: var(--qm-radius-control);
  background: var(--qm-primary-soft-bg);
  color: var(--qm-primary-soft-text);
  font-size: 12px;
  font-weight: 500;
}

.feature-card p,
.download-card p,
.sea-steps p,
.site-footer p,
.privacy-dialog__content p {
  margin-bottom: 0;
  font-size: 14px;
}

.sea-section {
  background: var(--qm-card-bg);
}

.sea-section__content > p:not(.eyebrow) {
  margin-bottom: var(--qm-space-lg);
}

.text-link {
  display: inline-flex;
  color: var(--qm-primary-soft-text);
  font-size: 15px;
  font-weight: 500;
}

.text-link::after {
  margin-left: var(--qm-space-sm);
  content: "→";
}

.text-link:hover {
  color: var(--qm-primary);
}

.sea-steps {
  display: grid;
  gap: var(--qm-space-md);
  margin: 0;
  padding: 0;
  list-style: none;
}

.sea-steps li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: var(--qm-space-md);
  align-items: start;
  padding: var(--qm-space-md);
  border: 1px solid var(--qm-border);
  border-radius: var(--qm-radius-card);
  background: var(--qm-panel-bg);
}

.sea-steps li > span {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--qm-radius-control);
  background: var(--qm-primary);
  color: var(--qm-primary-on-solid);
  font-size: 16px;
  font-weight: 500;
}

.sea-steps h3 {
  margin-bottom: var(--qm-space-xs);
  font-size: 18px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--qm-space-lg);
  max-width: 760px;
  margin: 0 auto;
}

.download-card {
  display: flex;
  min-height: 245px;
  flex-direction: column;
  align-items: flex-start;
}

.download-card__platform {
  margin-bottom: 40px;
  color: var(--qm-primary-soft-text);
  font-size: 14px;
  font-weight: 500;
}

.download-card h3 {
  font-size: 24px;
}

.download-card p {
  margin-bottom: var(--qm-space-lg);
}

.download-card .button {
  margin-top: auto;
}

.site-footer {
  padding: 48px 0 var(--qm-space-lg);
  background: var(--qm-card-bg);
}

.site-footer__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--qm-space-lg);
  padding-bottom: var(--qm-space-lg);
  border-bottom: 1px solid var(--qm-border);
}

.brand--footer {
  margin-bottom: var(--qm-space-md);
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--qm-space-sm);
  color: var(--qm-text-secondary);
  font-size: 14px;
}

.site-footer__links a:hover,
.privacy-dialog__content a:hover {
  color: var(--qm-primary);
}

.site-footer__copyright {
  padding-top: var(--qm-space-lg);
  color: var(--qm-text-tertiary);
  font-size: 12px;
}

.privacy-dialog {
  width: min(calc(100% - 48px), 560px);
  padding: 0;
  border: 1px solid var(--qm-border);
  border-radius: var(--qm-radius-card);
  background: var(--qm-card-bg);
  color: var(--qm-text-primary);
}

.privacy-dialog::backdrop {
  background: var(--qm-text-primary);
  opacity: 0.28;
}

.privacy-dialog__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--qm-space-md);
  padding: var(--qm-space-md) var(--qm-space-lg);
  border-bottom: 1px solid var(--qm-border);
}

.privacy-dialog__header h2 {
  margin-bottom: 0;
  font-size: 20px;
}

.dialog-close {
  min-height: 32px;
  padding: 0 var(--qm-space-md);
  border: 1px solid var(--qm-border-strong);
  border-radius: var(--qm-radius-control);
  background: var(--qm-card-bg);
  color: var(--qm-text-secondary);
  cursor: pointer;
  font-size: 14px;
}

.dialog-close:hover {
  border-color: var(--qm-primary);
  color: var(--qm-primary);
}

.privacy-dialog__content {
  display: grid;
  gap: var(--qm-space-md);
  padding: var(--qm-space-lg);
}

@media (max-width: 768px) {
  .site-container {
    width: min(calc(100% - 32px), var(--qm-content-width));
  }

  .section {
    padding: 64px 0;
  }

  .site-header__inner {
    position: relative;
    min-height: 64px;
  }

  .brand__logo {
    width: 148px;
    height: 42px;
  }

  .nav-toggle {
    display: inline-flex;
    min-height: 36px;
    align-items: center;
    gap: var(--qm-space-sm);
    padding: 0 var(--qm-space-sm);
    border: 1px solid var(--qm-border-strong);
    border-radius: var(--qm-radius-control);
    background: var(--qm-card-bg);
    cursor: pointer;
    font-size: 14px;
  }

  .nav-toggle__icon,
  .nav-toggle__icon::before,
  .nav-toggle__icon::after {
    display: block;
    width: 16px;
    height: 1px;
    background: var(--qm-text-primary);
    content: "";
  }

  .nav-toggle__icon {
    position: relative;
  }

  .nav-toggle__icon::before,
  .nav-toggle__icon::after {
    position: absolute;
    left: 0;
  }

  .nav-toggle__icon::before {
    top: -5px;
  }

  .nav-toggle__icon::after {
    top: 5px;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--qm-space-sm) var(--qm-space-md) var(--qm-space-md);
    border-bottom: 1px solid var(--qm-border);
    background: var(--qm-card-bg);
  }

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

  .site-nav a {
    padding: var(--qm-space-sm) 0;
  }

  .hero__layout,
  .sea-section__layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 28px;
  }

  .hero__summary {
    font-size: 16px;
  }

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

  .feature-card__number,
  .download-card__platform {
    margin-bottom: var(--qm-space-lg);
  }

  .site-footer__inner {
    flex-direction: column;
  }

  .site-footer__links {
    align-items: flex-start;
  }
}

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

  .button {
    transition: none;
  }
}