:root {
  --ink: #102733;
  --muted: #60717b;
  --line: #d7e4ea;
  --brand: #0b6fae;
  --brand-dark: #084f7d;
  --accent: #18a999;
  --soft: #eef7fb;
  --white: #ffffff;
  --warning: #f7b538;
  --shadow: 0 22px 60px rgba(16, 39, 51, .12);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #f8fbfd;
  line-height: 1.6;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 64px);
  border-bottom: 1px solid rgba(215, 228, 234, .9);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 360px;
}

.brand-logo {
  display: block;
  width: 82px;
  height: 44px;
  object-fit: contain;
}

.brand strong,
.brand em {
  display: block;
}

.brand strong {
  font-size: 21px;
  font-weight: 900;
  line-height: 1.1;
}

.brand em {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  color: var(--muted);
  font-style: normal;
  font-size: 0;
}

.brand em::before {
  content: "专注医疗器械";
  font-size: 12px;
}

.brand em::after {
  content: "研发制造 30年";
  display: inline-flex;
  align-items: center;
  min-height: 20px;
  padding: 0 8px;
  border-radius: 999px;
  color: var(--brand-dark);
  border: 1px solid rgba(11, 111, 174, .18);
  background: linear-gradient(135deg, rgba(232, 247, 255, .98), rgba(218, 247, 243, .98));
  font-size: 12px;
  font-weight: 900;
  box-shadow: 0 8px 16px rgba(11, 111, 174, .12);
}

.nav {
  display: flex;
  gap: 24px;
  color: #36515f;
  font-size: 15px;
}

.nav a:hover {
  color: var(--brand);
}

.nav-phone {
  font-size: 20px;
  font-weight: 700;
  color: #d90000;
  padding: 6px 12px;
  border: 1px solid #d90000;
  border-radius: 999px;
}

.nav-phone:hover {
  color: #fff;
  background: #d90000;
}
.top-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.top-cta,
.btn.primary {
  color: white;
  background: var(--brand);
  box-shadow: 0 12px 28px rgba(11, 111, 174, .25);
}

.btn.secondary {
  color: var(--brand-dark);
  border-color: var(--line);
  background: white;
}

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

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, .82fr);
  gap: clamp(32px, 6vw, 76px);
  align-items: center;
  min-height: calc(100vh - 70px);
  padding: clamp(42px, 6vw, 90px) clamp(36px, 8vw, 128px) 44px;
  background:
    linear-gradient(90deg, rgba(248, 251, 253, .98) 0%, rgba(248, 251, 253, .86) 47%, rgba(248, 251, 253, .2) 100%),
    url("img/hero-medical-bg.png") center / cover no-repeat,
    linear-gradient(135deg, #f8fbfd, #eaf5fa);
  overflow: hidden;
}

.hero-copy,
.hero-visual {
  position: relative;
  z-index: 1;
}

.hero-copy {
  max-width: 680px;
  margin-left: clamp(36px, 5vw, 88px);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
}

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

h1 {
  max-width: 840px;
  margin-bottom: 22px;
  font-size: clamp(36px, 5.1vw, 68px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy h1 {
  max-width: none;
  font-size: clamp(36px, 4vw, 54px);
  white-space: nowrap;
}

.hero-subtitle {
  max-width: 760px;
  margin-bottom: 28px;
  color: #405b68;
  font-size: clamp(17px, 2vw, 21px);
}

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

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 160px));
  gap: 10px;
  padding-top: 12px;
}

.proof-strip span {
  position: relative;
  display: grid;
  align-content: center;
  min-height: 76px;
  padding: 14px 18px;
  border: 1px solid rgba(11, 111, 174, .18);
  border-radius: 8px;
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 12px 26px rgba(16, 39, 51, .08);
}

.proof-strip strong {
  display: block;
  color: var(--brand-dark);
  font-size: 28px;
  line-height: 1.1;
}

.proof-strip em {
  display: block;
  margin-top: 4px;
  color: #36515f;
  font-style: normal;
  font-weight: 700;
}

.proof-strip .proof-featured {
  border-color: rgba(24, 169, 153, .52);
  background: linear-gradient(135deg, var(--brand), var(--accent));
  box-shadow: 0 18px 36px rgba(11, 111, 174, .24);
}

.proof-strip .proof-featured strong,
.proof-strip .proof-featured em {
  color: white;
}

.proof-strip .proof-featured::after {
  content: "科进出品";
  position: absolute;
  right: 10px;
  top: -12px;
  padding: 3px 8px;
  border-radius: 999px;
  color: var(--brand-dark);
  background: #ffffff;
  font-size: 12px;
  font-weight: 800;
  box-shadow: 0 8px 18px rgba(16, 39, 51, .12);
}

.hero-visual {
  min-width: 0;
}

.product-hero {
  display: grid;
  min-height: 520px;
  place-items: center;
}

.product-hero img {
  display: block;
  width: min(100%, 560px);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 28px 46px rgba(16, 39, 51, .16));
}

.section {
  padding: clamp(54px, 7vw, 92px) clamp(20px, 6vw, 88px);
}

.section-head {
  max-width: 820px;
  margin-bottom: 32px;
}

.section-head.compact {
  margin-bottom: 22px;
}

.models .section-head {
  max-width: 1040px;
}

.models h2 {
  font-size: clamp(30px, 3vw, 40px);
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(27px, 3.4vw, 44px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.35;
}

.quick-form {
  display: grid;
  grid-template-columns: minmax(360px, .72fr) minmax(460px, 1fr);
  gap: clamp(34px, 6vw, 72px);
  align-items: start;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: white;
}

.quick-form .section-head {
  max-width: 520px;
}

.quick-form h2 {
  font-size: clamp(34px, 3.8vw, 48px);
  line-height: 1.2;
}

.lead-copy {
  max-width: 460px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.lead-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdfe;
  box-shadow: 0 16px 40px rgba(16, 39, 51, .08);
}

.lead-form label {
  display: grid;
  gap: 8px;
  color: #344c59;
  font-size: 14px;
  font-weight: 700;
}

.lead-form .form-row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.lead-form .form-group {
  display: grid;
  gap: 8px;
}

.lead-form .form-group label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: auto;
  line-height: 1.25;
}

.lead-form .label-main {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.lead-form .required {
  color: #d33b2f;
}

.lead-form .en-label {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.lead-form input,
.lead-form select {
  width: 100%;
  min-height: 46px;
  padding: 0 12px;
  border: 1px solid #cbdce4;
  border-radius: 6px;
  color: var(--ink);
  background: white;
  font: inherit;
}

.lead-form input:focus,
.lead-form select:focus {
  outline: 3px solid rgba(11, 111, 174, .16);
  border-color: var(--brand);
}

.lead-form .submit {
  grid-column: 1 / -1;
  min-height: 50px;
  font-size: 16px;
}

.form-note {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.qr-card {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border: 1px dashed rgba(11, 111, 174, .34);
  border-radius: 8px;
  background: #f3fbff;
}

.qr-card img {
  display: block;
  width: 78px;
  height: 78px;
  object-fit: contain;
  border-radius: 6px;
  background: white;
}

.qr-card strong,
.qr-card em {
  display: block;
}

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

.qr-card em {
  color: var(--muted);
  font-style: normal;
  font-size: 13px;
}

.form-success {
  display: none;
  grid-column: 2;
  padding: 14px 16px;
  border-radius: 8px;
  color: #0f5132;
  background: #dff6ea;
}

.form-success.show {
  display: block;
}

.three-grid,
.benefit-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.three-grid article,
.benefit-list article,
.model-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 10px 28px rgba(16, 39, 51, .06);
}

.three-grid article {
  padding: 24px;
}

.num {
  color: var(--accent);
  font-size: 14px;
  font-weight: 800;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.model-card {
  display: flex;
  flex-direction: column;
  min-height: 500px;
  padding: 22px;
  min-width: 0;
}

.model-card.featured {
  border-color: rgba(24, 169, 153, .5);
  box-shadow: 0 18px 42px rgba(24, 169, 153, .14);
}

.model-card p,
.three-grid p,
.benefit-list p {
  color: var(--muted);
}

.model-card ul {
  margin: 0 0 20px;
  padding-left: 18px;
  color: #405b68;
}

.model-card a {
  margin-top: auto;
  color: var(--brand);
  font-weight: 800;
}

.model-image {
  display: grid;
  width: 100%;
  height: 230px;
  place-items: center;
  flex: 0 0 230px;
  margin: 0 0 26px;
  padding: 0;
  border: 0;
  background: transparent;
  overflow: hidden;
}

.model-image img {
  display: block;
  width: min(100%, 300px);
  height: 100%;
  object-fit: contain;
}

.model-card h3 {
  margin-top: 0;
  position: relative;
  z-index: 1;
}

.selector {
  display: grid;
  grid-template-columns: minmax(260px, .7fr) minmax(320px, 1fr);
  gap: 30px;
  align-items: center;
  background: var(--soft);
}

.selector-panel {
  padding: 22px;
  border-radius: 8px;
  background: white;
  box-shadow: var(--shadow);
}

.segmented {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 18px;
}

.segmented button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: white;
  color: #39525f;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.segmented button.active {
  color: white;
  border-color: var(--brand);
  background: var(--brand);
}

.recommendation {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 190px;
  gap: 18px;
  align-items: center;
  min-height: 150px;
  padding: 24px;
  border-radius: 8px;
  background: #f8fbfd;
}

.recommendation span {
  color: var(--muted);
  font-size: 14px;
}

.recommendation strong {
  display: block;
  margin: 6px 0;
  color: var(--brand-dark);
  font-size: 34px;
}

.recommend-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  margin-top: 12px;
  padding: 0 16px;
  border-radius: 6px;
  color: white;
  background: var(--brand);
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(11, 111, 174, .18);
}

.recommendation img {
  display: block;
  width: 100%;
  height: 138px;
  object-fit: contain;
}

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

.benefit-list article {
  padding: 22px;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.scene-grid article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 10px 28px rgba(16, 39, 51, .06);
}

.scene-grid span {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--brand-dark);
  background: var(--soft);
  font-size: 13px;
  font-weight: 800;
}

.scene-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.trust {
  display: grid;
  grid-template-columns: minmax(260px, .75fr) minmax(320px, 1fr);
  gap: 34px;
  align-items: start;
  background: #102733;
  color: white;
}

.trust .eyebrow {
  color: #75ddd3;
}

.trust-copy p {
  color: rgba(255, 255, 255, .75);
}

.trust-panel {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 8px;
  background: rgba(255, 255, 255, .06);
}

.trust-panel dl {
  display: grid;
  gap: 16px;
  margin: 0;
}

.trust-panel div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
}

.trust-panel div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.trust-panel dt {
  color: #75ddd3;
  font-weight: 800;
}

.trust-panel dd {
  margin: 0;
}

.final-cta {
  text-align: center;
  background: white;
}

.final-cta .hero-actions {
  justify-content: center;
}

.final-cta p {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  color: var(--muted);
}

.floating-cta {
  position: fixed;
  right: 18px;
  bottom: 22px;
  z-index: 60;
  display: grid;
  gap: 8px;
}

.floating-cta a {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 8px;
  color: white;
  background: var(--brand);
  box-shadow: 0 14px 28px rgba(16, 39, 51, .2);
  font-weight: 800;
}

.floating-cta a + a {
  background: var(--accent);
}

.footer {
  padding: 24px clamp(20px, 6vw, 88px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #f8fbfd;
  font-size: 13px;
  text-align: center;
}

.footer p {
  margin: 0;
}

.footer a {
  color: var(--brand);
}

@media (max-width: 1180px) {
  .model-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (max-width: 860px) {
  .topbar {
    align-items: flex-start;
  }

  .nav {
    display: none;
  }

  .top-cta {
    display: none;
  }

  .hero,
  .quick-form,
  .selector,
  .trust {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-copy {
    margin-left: 0;
  }

  .hero-copy h1 {
    white-space: normal;
  }

  .product-hero {
    min-height: 430px;
  }

  .proof-strip,
  .three-grid,
  .model-grid {
    grid-template-columns: 1fr;
  }

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

  .lead-form {
    grid-template-columns: 1fr;
  }

  .lead-form .form-row {
    grid-template-columns: 1fr;
  }

  .form-success {
    grid-column: 1;
  }

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

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

  .recommendation img {
    width: min(220px, 100%);
    margin: 0 auto;
  }

  .recommend-cta {
    width: 100%;
  }
}

@media (max-width: 560px) {
  .brand {
    min-width: 0;
  }

  .brand em {
    display: none;
  }

  h1 {
    font-size: 35px;
  }

  .hero-actions,
  .proof-strip {
    display: grid;
  }

  .btn {
    width: 100%;
  }

  .benefit-list,
  .scene-grid,
  .segmented,
  .trust-panel div {
    grid-template-columns: 1fr;
  }

  .floating-cta {
    left: 14px;
    right: 14px;
    bottom: 14px;
    grid-template-columns: repeat(2, 1fr);
  }

  .floating-cta a {
    width: auto;
    height: 48px;
  }

  .footer {
    padding-bottom: 84px;
  }
}