:root {
  --blue-950: #0c2134;
  --blue-900: #123a5a;
  --blue-800: #174a70;
  --blue-700: #1f5b85;
  --orange: #f26a21;
  --orange-dark: #d95718;
  --ink: #17212b;
  --text: #2b3642;
  --muted: #667380;
  --line: #d9e0e7;
  --soft: #f4f7fa;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(10, 31, 51, 0.14);
  --container: 1180px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  display: grid;
  grid-template-columns: auto 1fr auto auto auto;
  align-items: center;
  gap: 24px;
  padding: 0 max(24px, calc((100vw - var(--container)) / 2));
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(217, 224, 231, 0.8);
  backdrop-filter: blur(14px);
}


.site-header.scrolled {
  box-shadow: 0 10px 30px rgba(12, 33, 52, 0.08);
}
.brand {
  display: inline-flex;
  align-items: center;
  min-width: 150px;
}

.brand img {
  width: 142px;
  height: 48px;
  object-fit: contain;
}

.desktop-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 28px;
  color: #354454;
  font-size: 15px;
  font-weight: 600;
}

.desktop-nav a {
  position: relative;
  padding: 26px 0 24px;
}

.desktop-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 17px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.desktop-nav a:hover::after,
.desktop-nav a.active::after {
  transform: scaleX(1);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  font-family: inherit;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.header-cta,
.button.primary {
  color: var(--white);
  background: var(--orange);
  border: 1px solid var(--orange);
}

.header-cta:hover,
.button.primary:hover {
  background: var(--orange-dark);
  border-color: var(--orange-dark);
  transform: translateY(-1px);
}

.button.ghost {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.08);
}

.button.ghost:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.16);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  width: 19px;
  height: 2px;
  background: var(--blue-900);
  border-radius: 2px;
}

.lang-toggle {
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--blue-900);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition:
    border-color 180ms ease,
    color 180ms ease;
}

.lang-toggle:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.mobile-lang {
  display: block;
  width: 100%;
  text-align: left;
  padding: 15px 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  font-weight: 700;
  color: var(--orange-dark);
  font-size: 15px;
  cursor: pointer;
}

.mobile-panel {
  position: fixed;
  z-index: 49;
  top: 72px;
  left: 0;
  right: 0;
  display: none;
  padding: 14px 24px 24px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.mobile-panel a {
  display: block;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
  color: var(--blue-900);
}

.mobile-panel a:last-child {
  border-bottom: 0;
  color: var(--orange-dark);
}

.mobile-cta {
  display: block;
  width: 100%;
  padding: 15px 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  text-align: left;
  font-size: 15px;
  font-weight: 700;
  color: var(--orange-dark);
  cursor: pointer;
}

.mobile-panel.open {
  display: block;
}


main section {
  scroll-margin-top: 86px;
}
.hero {
  position: relative;
  min-height: 64vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--blue-950);
}

.hero-bg,
.hero-scrim {
  position: absolute;
  inset: 0;
}

.hero-bg {
  background-color: #061525;
  background-image:
    radial-gradient(55% 78% at 14% 24%, rgba(43, 112, 196, 0.9), transparent 52%),
    radial-gradient(48% 64% at 86% 18%, rgba(245, 158, 11, 0.45), transparent 48%),
    radial-gradient(72% 92% at 74% 90%, rgba(28, 72, 128, 0.85), transparent 52%),
    repeating-linear-gradient(118deg, rgba(255,255,255,0.035) 0px, rgba(255,255,255,0.035) 1px, transparent 1px, transparent 72px),
    repeating-linear-gradient(28deg, rgba(255,255,255,0.018) 0px, rgba(255,255,255,0.018) 1px, transparent 1px, transparent 36px);
  background-size: 200% 200%, 200% 200%, 200% 200%, 140px 140px, 72px 72px;
  background-repeat: no-repeat, no-repeat, no-repeat, repeat, repeat;
  animation: heroDrift 18s ease-in-out infinite alternate;
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: -10%;
  background-image: url("./assets/hero-bg-abstract.png");
  background-size: 110% auto;
  background-position: 50% 50%;
  background-repeat: no-repeat;
  filter: blur(2px) saturate(1.05) brightness(0.85);
  opacity: 0.38;
  animation: heroZoom 14s ease-in-out infinite alternate;
  mask-image: linear-gradient(180deg, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 70%, rgba(0,0,0,0) 100%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,1) 0%, rgba(0,0,0,1) 70%, rgba(0,0,0,0) 100%);
}

@keyframes heroDrift {
  0% {
    background-position: 0% 0%, 100% 100%, 50% 50%, 0 0, 0 0;
  }
  100% {
    background-position: 34% 28%, 62% 78%, 48% 64%, 0 0, 0 0;
  }
}

@keyframes heroZoom {
  0% {
    transform: scale(1.02);
  }
  100% {
    transform: scale(1.16);
  }
}

.hero-scrim {
  background:
    linear-gradient(90deg, rgba(6, 21, 37, 0.55) 0%, rgba(6, 21, 37, 0.12) 40%, transparent 70%),
    linear-gradient(0deg, rgba(6, 21, 37, 0.35) 0%, transparent 28%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 72px;
  padding-bottom: 44px;
  text-shadow: 0 2px 18px rgba(6, 21, 37, 0.65);
}

.hero h1 {
  margin: 0;
  font-size: 72px;
  line-height: 1.05;
  font-weight: 800;
}

.hero-lead {
  margin: 20px 0 0;
  max-width: 720px;
  font-size: 30px;
  line-height: 1.28;
  font-weight: 700;
}

.hero-copy {
  margin: 24px 0 0;
  max-width: 650px;
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.86);
}

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

.section {
  padding: 92px 0;
}

.section-number {
  margin: 0 0 14px;
  color: var(--orange);
  font-size: 16px;
  font-weight: 800;
}

.section h2,
.contact-section h2 {
  margin: 0;
  color: var(--ink);
  font-size: 42px;
  line-height: 1.22;
  font-weight: 800;
}

.section-copy > p:not(.section-number),
.section-heading > p {
  max-width: 760px;
  margin: 20px 0 0;
  font-size: 17px;
  line-height: 1.88;
}

.two-column,
.manufacturing-layout,
.response-layout,
.system-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
  gap: 56px;
  align-items: center;
}

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

.about-media img,
.response-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.system-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: center 70%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.value-row {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.value-row div {
  padding: 18px 20px;
  border-left: 4px solid var(--orange);
  background: var(--white);
  border-radius: var(--radius);
}

.value-row strong,
.value-row span {
  display: block;
}

.value-row strong {
  color: var(--blue-900);
  font-size: 16px;
}

.value-row span {
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.65;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  margin-top: 54px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.metric {
  padding: 26px 20px;
  background: var(--white);
}

.metric span {
  display: block;
  color: var(--blue-900);
  font-size: 30px;
  line-height: 1.1;
  font-weight: 800;
}

.metric p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.section-heading {
  display: grid;
  gap: 0;
  max-width: var(--container);
}

.business-section {
  background: var(--white);
}

.process-line {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 36px;
}

.process-line div {
  position: relative;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--blue-900);
  font-weight: 800;
  background: linear-gradient(180deg, #ffffff 0%, #f6f9fc 100%);
}

.process-line div::after {
  content: "";
  position: absolute;
  right: -12px;
  top: 50%;
  width: 12px;
  height: 2px;
  background: var(--orange);
}

.process-line div:last-child::after {
  display: none;
}

.applications-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.applications-grid article,
.equipment-grid article,
.quality-cards article {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.applications-grid h3,
.equipment-grid h3,
.quality-cards h3 {
  margin: 0;
  color: var(--blue-900);
  font-size: 20px;
  line-height: 1.35;
}

.applications-grid p,
.equipment-grid p,
.quality-cards p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.product-rail {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.product-rail img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.manufacturing-section {
  background: linear-gradient(180deg, #f7fafc 0%, #eef3f7 100%);
}

.manufacturing-layout {
  grid-template-columns: minmax(320px, 0.78fr) minmax(0, 1fr);
}

.big-number {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 2px solid rgba(242, 106, 33, 0.34);
}

.big-number span {
  display: block;
  color: var(--blue-900);
  font-size: 56px;
  line-height: 1;
  font-weight: 800;
}

.big-number p {
  margin: 10px 0 0;
  color: var(--muted);
}

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.factory-gallery {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 16px;
  margin-top: 42px;
}

.factory-gallery img {
  width: 100%;
  height: 310px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 12px 28px rgba(13, 33, 52, 0.12);
}

.delivery-section {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: stretch;
  padding: 0;
  color: var(--white);
  background: var(--blue-950);
  overflow: hidden;
}

.delivery-image {
  position: absolute;
  inset: 0;
  background-image: url("./assets/ppt/slide05_img01_37b36e341708dee6.webp");
  background-size: cover;
  background-position: center;
}

.delivery-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(12, 33, 52, 0.9) 0%, rgba(12, 33, 52, 0.66) 54%, rgba(12, 33, 52, 0.18) 100%);
}

.delivery-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 0.8fr);
  gap: 48px;
  align-items: center;
  padding: 92px 0;
}

.delivery-content h2,
.delivery-content .section-number {
  color: var(--white);
}

.delivery-content p {
  max-width: 650px;
  margin: 22px 0 0;
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.86);
}

.delivery-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.delivery-stats div {
  min-height: 132px;
  padding: 26px 24px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
}

.delivery-stats span {
  display: block;
  color: var(--white);
  font-size: 36px;
  line-height: 1;
  font-weight: 800;
}

.delivery-stats p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.45;
}

.quality-section {
  background: var(--white);
}

.quality-cards p {
  margin-bottom: 22px;
}

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

.response-layout {
  grid-template-columns: minmax(360px, 0.94fr) minmax(0, 1fr);
}

.timeline {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.timeline div {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 8px 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.timeline span {
  grid-row: span 2;
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  color: var(--white);
  background: var(--blue-900);
  font-size: 15px;
  font-weight: 800;
}

.timeline strong {
  color: var(--ink);
  font-size: 19px;
}

.timeline p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.system-section {
  background: var(--white);
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 38px;
}

.system-grid article {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.system-grid strong,
.system-grid span {
  display: block;
}

.system-grid strong {
  color: var(--blue-900);
  font-size: 20px;
  line-height: 1.25;
}

.system-grid span {
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.6;
}

.contact-section {
  position: relative;
  color: var(--white);
  background: var(--blue-950);
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.contact-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 64px 0 56px;
}

.contact-name-zh {
  margin: 0 0 8px;
  color: var(--white);
  font-size: 18px;
  font-weight: 700;
}

.contact-name-en {
  margin: 0 0 28px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
  line-height: 1.5;
  max-width: 520px;
}

.contact-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 0 0 28px;
  color: var(--white);
  font-size: 16px;
}

.contact-line span {
  font-weight: 700;
}

.contact-line a {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  transition: color 180ms ease;
}

.contact-line a:hover {
  color: var(--white);
}

.contact-actions {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.kefu-btn,
.email-btn {
  font-size: 16px;
  padding: 14px 36px;
  min-height: 48px;
  color: var(--white);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.45);
}

.kefu-btn:hover,
.email-btn:hover {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.08);
}

body.modal-open {
  overflow: hidden;
}

.kefu-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 240ms ease,
    visibility 240ms ease;
}

.kefu-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.kefu-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(12, 33, 52, 0.65);
}

.kefu-modal-panel {
  position: relative;
  z-index: 1;
  max-width: 360px;
  width: 100%;
  padding: 32px;
  text-align: center;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transform: translateY(12px);
  transition: transform 240ms ease;
}

.kefu-modal.is-open .kefu-modal-panel {
  transform: translateY(0);
}

.kefu-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--soft);
  color: var(--muted);
  cursor: pointer;
  transition:
    background 180ms ease,
    color 180ms ease;
}

.kefu-modal-close:hover {
  background: var(--line);
  color: var(--text);
}

.kefu-modal-close svg {
  width: 16px;
  height: 16px;
}

.kefu-modal img {
  width: 100%;
  max-width: 220px;
  margin: 0 auto 16px;
  display: block;
}

.kefu-modal p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.kefu-modal .button {
  width: 100%;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
}

.kefu-modal .button:hover {
  border-color: var(--orange);
  color: var(--orange);
  background: transparent;
}

/* 咨询方式选择浮层（在鼠标点击处弹出） */
.contact-choice-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 180ms ease,
    visibility 180ms ease;
}

.contact-choice-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.contact-choice-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(12, 33, 52, 0.22);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.contact-choice-panel {
  position: fixed;
  z-index: 101;
  min-width: 248px;
  padding: 42px 16px 16px;
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid rgba(217, 221, 225, 0.85);
  border-radius: 14px;
  box-shadow:
    0 4px 6px rgba(13, 33, 52, 0.04),
    0 12px 24px rgba(13, 33, 52, 0.12),
    0 24px 48px rgba(13, 33, 52, 0.14);
  transform: scale(0.96) translateY(-6px);
  transform-origin: top center;
  opacity: 0;
  transition:
    transform 220ms cubic-bezier(0.16, 1, 0.3, 1),
    opacity 200ms ease;
}

.contact-choice-panel::before {
  content: "";
  position: absolute;
  top: -6px;
  left: var(--arrow-left, 50%);
  width: 12px;
  height: 12px;
  background: rgba(255, 255, 255, 0.98);
  border-left: 1px solid rgba(217, 221, 225, 0.85);
  border-top: 1px solid rgba(217, 221, 225, 0.85);
  transform: translateX(-50%) rotate(45deg);
}

.contact-choice-modal.is-open .contact-choice-panel {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.contact-choice-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition:
    background 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.contact-choice-close:hover {
  background: rgba(230, 117, 43, 0.1);
  color: var(--orange);
  transform: rotate(90deg);
}

.contact-choice-close svg {
  width: 14px;
  height: 14px;
}

.contact-choice-actions {
  display: flex;
  flex-direction: row;
  gap: 10px;
}

.contact-choice-actions .button {
  flex: 1;
  min-height: 38px;
  padding: 0 16px;
  font-size: 14px;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  transition:
    border-color 180ms ease,
    color 180ms ease,
    background 180ms ease,
    transform 120ms ease;
}

.contact-choice-actions .button:hover {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(230, 117, 43, 0.04);
  transform: translateY(-1px);
}

.contact-choice-actions .button:active {
  transform: translateY(0);
}

@media (max-width: 640px) {
  .contact-content {
    padding: 56px 0 48px;
  }

  .contact-name-en {
    margin-bottom: 24px;
    padding: 0 24px;
  }

  .contact-line {
    flex-direction: column;
    gap: 6px;
    margin-bottom: 24px;
  }

  .contact-actions {
    flex-direction: column;
    width: 100%;
    max-width: 280px;
  }

  .kefu-btn,
  .email-btn {
    width: 100%;
  }
}

/* 旧表单结构兼容：页面已移除表单，保留样式无害 */
.contact-form {
  padding: 28px;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px 18px;
}

.contact-form .field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-form .field-wide {
  grid-column: 1 / -1;
}

.contact-form label {
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.contact-form label em {
  color: var(--orange);
  font-style: normal;
}

.contact-form label .opt {
  color: var(--muted);
  font-weight: 500;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  background: #fff;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--blue-700);
  box-shadow: 0 0 0 3px rgba(31, 91, 133, 0.12);
}

.contact-form textarea {
  resize: vertical;
  min-height: 84px;
}

.contact-form .form-actions {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.contact-form .form-actions .button {
  min-width: 150px;
}

.contact-form .form-note {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
  flex: 1;
  min-width: 200px;
}

.contact-form .form-status {
  grid-column: 1 / -1;
  margin: 0;
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
}

.contact-form .form-status.is-success {
  color: #0b6b3a;
  background: #e7f6ee;
  border: 1px solid #b7e3cb;
}

.contact-form .form-status.is-error {
  color: #a3261b;
  background: #fdecea;
  border: 1px solid #f4c4be;
}

.contact-form .button[disabled] {
  opacity: 0.7;
  cursor: progress;
}

.site-footer {
  background: var(--blue-950);
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  margin: 0;
}

.footer-icp {
  margin: 0;
}

.footer-icp a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  text-decoration: none;
  transition: color 180ms ease;
}

.footer-icp a:hover {
  color: var(--white);
}

@media (max-width: 960px) {
  .footer-main {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
}

@media (max-width: 640px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* 旧 footer 一列结构兼容 */

.back-top {
  position: fixed;
  z-index: 40;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  display: none;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: var(--radius);
  color: var(--white);
  background: var(--orange);
  box-shadow: 0 12px 28px rgba(217, 87, 24, 0.25);
  cursor: pointer;
}

.back-top.visible {
  display: inline-flex;
}

.back-top svg {
  width: 20px;
  height: 20px;
}

[data-animate] {
  transform: translateY(18px);
  opacity: 0;
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

[data-animate].in-view {
  transform: translateY(0);
  opacity: 1;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
    height: 68px;
  }

  .desktop-nav,
  .header-cta,
  .lang-toggle {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
    justify-self: end;
  }

  .mobile-panel {
    top: 68px;
  }

  
main section {
  scroll-margin-top: 86px;
}
.hero {
    min-height: 82vh;
  }

  .hero h1 {
    font-size: 54px;
  }

  .hero-lead {
    font-size: 25px;
  }

  .section {
    padding: 72px 0;
  }

  .section h2,
  .contact-section h2 {
    font-size: 34px;
  }

  .two-column,
  .manufacturing-layout,
  .response-layout,
  .delivery-content,
  .quality-layout,
  .system-layout {
    grid-template-columns: 1fr;
  }

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

  .metric-strip,
  .product-rail {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .factory-gallery {
    grid-template-columns: 1fr;
  }

  .factory-gallery img {
    height: 280px;
  }

  .delivery-content {
    padding: 76px 0;
  }

  .response-media {
    order: 2;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 36px;
    padding-bottom: 36px;
  }

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

@media (max-width: 700px) {

  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .site-header {
    padding: 0 16px;
  }

  .brand img {
    width: 132px;
  }

  
main section {
  scroll-margin-top: 86px;
}
.hero {
    min-height: 84vh;
  }

  .hero-bg {
    background-position: 58% center;
  }

  .hero-scrim {
    background:
      linear-gradient(90deg, rgba(12, 33, 52, 0.95) 0%, rgba(12, 33, 52, 0.76) 68%, rgba(12, 33, 52, 0.38) 100%),
      linear-gradient(0deg, rgba(12, 33, 52, 0.22), rgba(12, 33, 52, 0.18));
  }

  .hero-content {
    padding-top: 88px;
  }

  .hero h1 {
    font-size: 44px;
  }

  .hero-lead {
    font-size: 22px;
  }

  .hero-copy,
  .section-copy > p:not(.section-number),
  .section-heading > p,
  .delivery-content p {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    min-height: 46px;
  }

  .section {
    padding: 60px 0;
  }

  .section h2,
  .contact-section h2 {
    font-size: 30px;
  }

  .metric-strip,
  .applications-grid,
  .equipment-grid,
  .process-line,
  .product-rail,
  .delivery-stats,
  .system-list {
    grid-template-columns: 1fr;
  }

  .process-line div::after {
    right: auto;
    left: 50%;
    top: auto;
    bottom: -12px;
    width: 2px;
    height: 12px;
  }

  .metric {
    padding: 22px 18px;
  }

  .metric span {
    font-size: 28px;
  }

  .big-number span {
    font-size: 42px;
  }

  .factory-gallery img,
  .quality-cards img {
    height: 240px;
  }

  .quality-main,
  .quality-main img {
    min-height: 390px;
  }

  .quality-main div {
    padding: 24px;
  }

  .quality-main strong {
    font-size: 22px;
  }

  .timeline div {
    grid-template-columns: 48px 1fr;
  }

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

  .contact-form {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .footer-inner {
    display: grid;
    justify-items: center;
    text-align: center;
    gap: 16px;
  }

  .footer-meta {
    text-align: center;
  }

  .back-top {
    right: 16px;
    bottom: 16px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}






.quality-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 34px;
  align-items: stretch;
}

.quality-card {
  display: flex;
  overflow: hidden;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 8px 20px rgba(13, 33, 52, 0.06);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.quality-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(13, 33, 52, 0.12);
}

.quality-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.quality-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 20px 22px 24px;
}

.quality-card h3 {
  margin: 0;
  color: var(--blue-900);
  font-size: 18px;
  line-height: 1.4;
}

.quality-card p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

@media (max-width: 560px) {
  .quality-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .quality-card img {
    height: 180px;
  }
}