:root {
  --color-primary: #2F8F83;
  --color-primary-dark: #247267;
  --color-text: #1F2D2B;
  --color-muted: #5F6F6B;
  --color-bg: #F6FAF8;
  --color-bg-soft: #EEF6F4;
  --color-border: #DDEBE7;
  --color-accent: #D8B56D;
  --color-white: #FFFFFF;
  --shadow-soft: 0 18px 48px rgba(31, 45, 43, 0.10);
  --shadow-card: 0 10px 30px rgba(31, 45, 43, 0.07);
  --radius: 8px;
  --container: 1160px;
  --header-height: 78px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 18px);
}

body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

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

p {
  color: var(--color-muted);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg);
  overflow: hidden;
}

.brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-text {
  display: grid;
  line-height: 1.2;
}

.brand-text strong {
  font-size: 17px;
  color: var(--color-text);
}

.brand-text small {
  margin-top: 3px;
  color: var(--color-muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
  margin-left: auto;
  color: var(--color-muted);
  font-size: 14px;
  white-space: nowrap;
}

.site-nav a {
  transition: color 0.2s ease;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 600;
  line-height: 1.2;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

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

.btn-primary {
  color: var(--color-white);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-secondary {
  color: var(--color-primary);
  background: var(--color-white);
  border-color: var(--color-border);
}

.btn-secondary:hover,
.btn-secondary:focus {
  border-color: var(--color-primary);
  background: var(--color-bg);
}

.btn-wide {
  width: 100%;
  margin-top: auto;
}

.section {
  padding: 88px 0;
}

.section-soft {
  background: var(--color-bg);
}

.hero {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-white) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.95fr);
  align-items: center;
  gap: 58px;
}

.eyebrow {
  margin-bottom: 12px;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 660px;
  margin-bottom: 22px;
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.15;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 600px;
  margin-bottom: 30px;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-muted);
  background: rgba(255, 255, 255, 0.74);
  font-size: 14px;
}

.hero-media {
  position: relative;
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: 22px -18px -18px 26px;
  z-index: 0;
  border-radius: 18px;
  background: var(--color-bg-soft);
}

.hero-media img {
  position: relative;
  z-index: 1;
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  object-fit: cover;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-heading h2,
.partner-copy h2 {
  margin-bottom: 14px;
  color: var(--color-text);
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.25;
  letter-spacing: 0;
}

.section-heading p {
  margin-bottom: 0;
  font-size: 17px;
}

.position-grid,
.two-column,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.text-panel {
  min-height: 230px;
  padding: 34px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
}

.text-panel h3 {
  margin-bottom: 14px;
  font-size: 22px;
}

.text-panel p {
  margin-bottom: 0;
}

.accent-panel {
  border-color: rgba(216, 181, 109, 0.45);
  background: #FFFDF7;
}

.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
}

.problem-card {
  padding: 32px;
}

.problem-card h3,
.feature-card h3,
.screen-card h3,
.audience-card h3,
.price-card h3,
.point-item h3 {
  margin-bottom: 12px;
  font-size: 20px;
  line-height: 1.35;
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 24px;
  color: var(--color-muted);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.feature-card {
  min-height: 250px;
  padding: 28px;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 22px;
  border-radius: 50%;
  color: var(--color-primary);
  background: var(--color-bg-soft);
  font-size: 13px;
  font-weight: 800;
}

.feature-card p,
.screen-card p,
.audience-card p,
.point-item p {
  margin-bottom: 0;
}

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

.screen-card {
  overflow: hidden;
}

.screen-card img {
  width: 100%;
  height: 360px;
  padding: 14px;
  object-fit: contain;
  background: var(--color-bg-soft);
  border-bottom: 1px solid var(--color-border);
}

.screen-card div {
  padding: 24px;
}

.audience-grid,
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.audience-card {
  padding: 30px;
}

.audience-card::before {
  content: "";
  display: block;
  width: 44px;
  height: 4px;
  margin-bottom: 22px;
  border-radius: 999px;
  background: var(--color-accent);
}

.pricing-grid {
  align-items: stretch;
}

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 520px;
  padding: 30px;
}

.price-card.recommended {
  border-color: var(--color-primary);
  box-shadow: 0 18px 44px rgba(47, 143, 131, 0.18);
}

.badge {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--color-text);
  background: var(--color-accent);
  font-size: 12px;
  font-weight: 700;
}

.price {
  margin: 10px 0 2px;
  color: var(--color-text);
  font-size: 34px;
  font-weight: 800;
  line-height: 1.2;
}

.year-price {
  margin-bottom: 12px;
  color: var(--color-primary);
  font-weight: 700;
}

.price-desc {
  min-height: 54px;
  margin-bottom: 24px;
}

.price-card .check-list {
  margin-bottom: 28px;
}

.partner-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 54px;
  align-items: center;
}

.partner-copy p:last-child {
  margin-bottom: 0;
}

.partner-points {
  display: grid;
  gap: 16px;
}

.point-item {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
}

.section-contact {
  background: var(--color-bg-soft);
}

.contact-grid {
  align-items: stretch;
}

.contact-card,
.qr-card {
  padding: 34px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
}

.contact-card dl {
  display: grid;
  gap: 18px;
  margin: 0;
}

.contact-card dl div {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.contact-card dt {
  color: var(--color-muted);
  font-weight: 600;
}

.contact-card dd {
  margin: 0;
  color: var(--color-text);
  font-weight: 700;
  word-break: break-word;
}

.qr-card {
  display: grid;
  place-items: center;
  text-align: center;
}

.qr-box {
  position: relative;
  display: grid;
  place-items: center;
  width: min(260px, 100%);
  aspect-ratio: 1;
  margin-bottom: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  overflow: hidden;
}

.qr-box img {
  width: 100%;
  height: 100%;
  padding: 12px;
  object-fit: contain;
  background: var(--color-white);
}

.qr-box.is-missing::after {
  content: "二维码待替换";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 78%;
  height: 78%;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  color: var(--color-muted);
  background: var(--color-white);
  font-weight: 700;
}

.qr-card p {
  margin-bottom: 0;
  color: var(--color-text);
  font-weight: 700;
}

.site-footer {
  padding: 34px 0;
  color: rgba(255, 255, 255, 0.78);
  background: #1F2D2B;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
}

.site-footer strong {
  display: block;
  margin-bottom: 8px;
  color: var(--color-white);
  font-size: 18px;
}

.site-footer p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.footer-note {
  max-width: 520px;
  text-align: right;
  font-size: 13px;
}

@media (max-width: 1060px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 12px 0;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    gap: 12px 18px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero-grid,
  .partner-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
  }

  .hero-media {
    max-width: 760px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 118px;
  }

  .section {
    padding: 58px 0;
  }

  .container {
    width: min(100% - 28px, var(--container));
  }

  .hero-grid {
    gap: 30px;
  }

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

  .hero-lead {
    margin-bottom: 24px;
  }

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

  .position-grid,
  .two-column,
  .screen-grid,
  .contact-grid,
  .feature-grid,
  .audience-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .price-card {
    min-height: auto;
  }

  .screen-card img {
    height: 320px;
  }

  .partner-layout {
    gap: 30px;
  }

  .footer-inner {
    display: grid;
  }

  .footer-note {
    text-align: left;
  }
}

@media (max-width: 560px) {
  :root {
    --header-height: 132px;
  }

  body {
    font-size: 15px;
  }

  .header-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px 12px;
    min-height: var(--header-height);
    padding: 10px 0;
  }

  .brand {
    width: auto;
    min-width: 0;
  }

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

  .brand-text strong {
    font-size: 16px;
  }

  .header-cta {
    min-height: 38px;
    padding: 0 14px;
    font-size: 14px;
  }

  .site-nav {
    order: initial;
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    gap: 8px;
    overflow: visible;
    padding-bottom: 0;
    font-size: 13px;
    white-space: normal;
  }

  .site-nav a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 32px;
    padding: 0 6px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-bg);
    text-align: center;
  }

  .hero {
    padding-top: 38px;
  }

  .hero h1 {
    margin-bottom: 16px;
    font-size: 29px;
  }

  .hero-lead,
  .section-heading p {
    font-size: 16px;
  }

  .hero-actions {
    gap: 10px;
    margin-bottom: 20px;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .tag-list {
    gap: 8px;
  }

  .tag-list span {
    min-height: 30px;
    padding: 0 10px;
    font-size: 13px;
  }

  .hero-media::before {
    display: none;
  }

  .text-panel,
  .problem-card,
  .feature-card,
  .audience-card,
  .price-card,
  .contact-card,
  .qr-card {
    padding: 20px;
  }

  .section-heading h2,
  .partner-copy h2 {
    font-size: 28px;
  }

  .text-panel {
    min-height: 0;
  }

  .feature-card {
    min-height: 0;
  }

  .feature-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 16px;
  }

  .screen-card div {
    padding: 20px;
  }

  .contact-card dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .screen-card img {
    height: 280px;
    padding: 10px;
  }

  .qr-box {
    width: min(220px, 100%);
  }
}

@media (max-width: 390px) {
  :root {
    --header-height: 126px;
  }

  .container {
    width: min(100% - 22px, var(--container));
  }

  .brand-logo {
    width: 34px;
    height: 34px;
  }

  .brand-text small {
    display: none;
  }

  .header-cta {
    min-height: 36px;
    padding: 0 12px;
    font-size: 13px;
  }

  .site-nav {
    gap: 6px;
    font-size: 12px;
  }

  .site-nav a {
    min-height: 30px;
    padding: 0 4px;
  }

  .hero h1 {
    font-size: 27px;
  }

  .screen-card img {
    height: 250px;
  }
}