:root {
  --ink: #102033;
  --muted: #5b6b7d;
  --line: #d8e3ed;
  --paper: #ffffff;
  --soft: #f3f8fc;
  --blue: #1268b3;
  --blue-strong: #07599d;
  --cyan: #11a9c8;
  --gold: #f2b94b;
  --shadow: 0 18px 50px rgba(16, 32, 51, 0.13);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family:
    "Microsoft YaHei",
    "PingFang SC",
    "Noto Sans CJK SC",
    Arial,
    sans-serif;
  line-height: 1.6;
  letter-spacing: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px clamp(16px, 4vw, 48px);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(216, 227, 237, 0.84);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
}

.brand-mark {
  position: relative;
  display: inline-grid;
  flex: 0 0 auto;
  width: auto;
  min-width: 50px;
  height: 42px;
  place-items: center start;
  color: var(--ink);
}

.brand-mark::before {
  position: absolute;
  left: 0;
  bottom: 3px;
  width: 48px;
  height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  border-radius: 999px;
  content: "";
}

.brand-mark::after {
  position: absolute;
  top: 7px;
  right: -8px;
  width: 7px;
  height: 7px;
  background: var(--gold);
  border-radius: 2px;
  content: "";
  transform: rotate(45deg);
}

.mark-core {
  position: relative;
  z-index: 1;
  padding-bottom: 6px;
  color: var(--ink);
  font-size: 23px;
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
}

.brand-text {
  display: grid;
  min-width: 0;
  line-height: 1.25;
}

.brand-text strong {
  overflow: hidden;
  font-size: clamp(15px, 4vw, 18px);
  white-space: nowrap;
  text-overflow: ellipsis;
}

.brand-text span {
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.header-cta,
.btn,
.mobile-sticky-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 8px;
  font-weight: 700;
  white-space: nowrap;
}

.header-cta {
  flex: 0 0 auto;
  padding: 0 15px;
  color: #fff;
  background: var(--blue);
}

.section-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding: 34px 0 48px;
}

.hero-copy {
  display: grid;
  gap: 18px;
  align-content: center;
}

.eyebrow {
  margin: 0;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 0;
  font-size: clamp(34px, 9vw, 62px);
  line-height: 1.08;
  letter-spacing: 0;
  word-break: keep-all;
}

.nowrap {
  white-space: nowrap;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(26px, 6vw, 42px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.28;
}

.hero-lead,
.section-heading p,
.final-cta p {
  color: var(--muted);
  font-size: 16px;
}

.hero-lead {
  max-width: 680px;
  margin-bottom: 0;
}

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

.btn {
  min-width: 160px;
  padding: 12px 18px;
  border: 1px solid transparent;
  font-size: 15px;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--blue-strong));
  box-shadow: 0 12px 26px rgba(18, 104, 179, 0.24);
}

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

.trust-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-width: 520px;
}

.trust-strip span {
  padding: 10px 12px;
  color: var(--ink);
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
}

.hero-media {
  position: relative;
  overflow: hidden;
  min-height: 360px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-media img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
}

.media-note {
  position: absolute;
  top: 12px;
  left: 12px;
  display: grid;
  max-width: calc(100% - 24px);
  padding: 9px 11px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(216, 227, 237, 0.95);
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(16, 32, 51, 0.12);
  backdrop-filter: blur(10px);
}

.media-note div {
  display: grid;
  gap: 3px;
}

.media-note strong {
  color: var(--blue);
  font-size: 14px;
  line-height: 1.25;
}

.media-note span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.compact {
  padding: 54px 0;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 24px;
  text-align: center;
}

.section-heading.left {
  margin-right: 0;
  margin-left: 0;
  text-align: left;
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.product-card {
  display: grid;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 28px rgba(16, 32, 51, 0.08);
}

.product-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.product-card div {
  padding: 18px;
}

.product-card p,
.process-list span {
  margin-bottom: 0;
  color: var(--muted);
}

.case-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.case-gallery figure {
  position: relative;
  overflow: hidden;
  min-height: 250px;
  margin: 0;
  background: var(--soft);
  border-radius: var(--radius);
}

.case-gallery img {
  width: 100%;
  height: 100%;
  min-height: 250px;
  object-fit: cover;
}

.case-gallery figcaption {
  position: absolute;
  right: 10px;
  bottom: 10px;
  left: 10px;
  padding: 9px 11px;
  color: #fff;
  background: rgba(16, 32, 51, 0.75);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
}

.process-section {
  padding: 50px 0;
  background: #0e3558;
  color: #fff;
}

.process-section .eyebrow,
.process-section .section-heading p {
  color: #9dddf0;
}

.process-layout {
  display: grid;
  gap: 22px;
}

.process-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: process;
}

.process-list li {
  position: relative;
  padding: 18px 18px 18px 64px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  counter-increment: process;
}

.process-list li::before {
  position: absolute;
  top: 18px;
  left: 18px;
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  color: #0e3558;
  background: var(--gold);
  border-radius: 8px;
  content: counter(process);
  font-weight: 900;
}

.process-list strong {
  display: block;
  margin-bottom: 4px;
  font-size: 18px;
}

.process-list span {
  color: rgba(255, 255, 255, 0.76);
}

.final-cta {
  display: grid;
  gap: 20px;
  align-items: center;
  padding: 56px 0 92px;
}

.final-cta h2 {
  max-width: 780px;
}

.mobile-sticky-cta {
  position: fixed;
  right: 12px;
  bottom: 12px;
  left: 12px;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 10px 10px 14px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 40px rgba(16, 32, 51, 0.22);
  backdrop-filter: blur(14px);
}

.mobile-sticky-cta div {
  display: grid;
  min-width: 0;
  line-height: 1.28;
}

.mobile-sticky-cta strong,
.mobile-sticky-cta span {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.mobile-sticky-cta strong {
  font-size: 14px;
}

.mobile-sticky-cta span {
  color: var(--muted);
  font-size: 12px;
}

.mobile-sticky-cta a {
  flex: 0 0 auto;
  padding: 0 15px;
  color: #fff;
  background: var(--blue);
}

@media (min-width: 680px) {
  .trust-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .final-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    padding-bottom: 64px;
  }

  .mobile-sticky-cta {
    right: 24px;
    left: auto;
    width: 390px;
  }
}

@media (min-width: 960px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) 470px;
    align-items: center;
    padding-top: 86px;
    padding-bottom: 88px;
  }

  .hero-media,
  .hero-media img {
    min-height: 560px;
  }

  .process-layout {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }

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

@media (max-width: 430px) {
  .site-header {
    padding-right: 12px;
    padding-left: 12px;
  }

  .brand-mark {
    min-width: 48px;
    height: 38px;
  }

  .mark-core {
    font-size: 21px;
  }

  .brand-text strong {
    max-width: 190px;
    font-size: 14px;
  }

  .brand-text span {
    max-width: 190px;
  }

  .header-cta {
    min-height: 38px;
    padding: 0 12px;
    font-size: 13px;
  }

  .section-shell {
    width: min(100% - 24px, 1120px);
  }

  .hero {
    gap: 20px;
    padding-top: 28px;
    padding-bottom: 32px;
  }

  .hero-copy {
    gap: 14px;
    align-items: center;
    text-align: center;
  }

  .hero-copy .eyebrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    max-width: 100%;
    padding: 6px 10px;
    background: var(--soft);
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 12px;
    line-height: 1.35;
  }

  h1 {
    max-width: 390px;
    font-size: 30px;
    line-height: 1.12;
    text-wrap: balance;
  }

  .hero-lead {
    max-width: 390px;
    font-size: 15px;
    line-height: 1.65;
    text-wrap: balance;
  }

  .hero-actions {
    gap: 10px;
  }

  .btn {
    width: 100%;
    min-height: 48px;
    padding: 10px 14px;
    font-size: 14px;
  }

  .trust-strip {
    gap: 8px;
  }

  .trust-strip span {
    padding: 9px 8px;
    font-size: 13px;
  }

  .hero-media,
  .hero-media img {
    min-height: 268px;
  }
}