:root {
  --ink: #101722;
  --muted: #66707d;
  --line: #dce4ec;
  --panel: #ffffff;
  --soft: #f4f8fb;
  --cyan: #00a8d8;
  --green: #12a675;
  --amber: #f6a434;
  --graphite: #26313d;
  --shadow: 0 20px 60px rgba(26, 45, 68, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background: #f8fbfd;
}

button,
input,
textarea {
  font: inherit;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 5vw;
  background: rgba(248, 251, 253, 0.92);
  border-bottom: 1px solid rgba(220, 228, 236, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, transparent 42%, rgba(255, 255, 255, 0.9) 43% 49%, transparent 50%),
    linear-gradient(135deg, var(--cyan), var(--green));
  box-shadow: 0 10px 26px rgba(0, 168, 216, 0.32);
}

.nav-links {
  display: flex;
  gap: 28px;
  color: #3c4651;
  font-size: 15px;
}

.cart-button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  cursor: pointer;
}

.cart-button {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  color: #fff;
  background: var(--graphite);
}

.cart-icon {
  width: 18px;
  height: 15px;
  border: 2px solid currentColor;
  border-top: 0;
  border-radius: 0 0 4px 4px;
}

.cart-icon::before {
  content: "";
  display: block;
  width: 8px;
  height: 6px;
  margin: -7px auto 0;
  border: 2px solid currentColor;
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
}

.cart-count {
  position: absolute;
  top: -6px;
  right: -6px;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border-radius: 20px;
  color: #fff;
  background: var(--amber);
  font-size: 12px;
  line-height: 20px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: 48px;
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: 72px 5vw 64px;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.9) 0%, rgba(235, 245, 249, 0.86) 48%, rgba(232, 241, 247, 0.68) 100%),
    radial-gradient(circle at 72% 28%, rgba(0, 168, 216, 0.24), transparent 34%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

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

h1 {
  max-width: 680px;
  margin-bottom: 22px;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  letter-spacing: 0;
}

.hero-copy p:not(.eyebrow),
.section-heading p,
.quality p,
.contact-band p,
.solution-grid p,
.product-card p {
  color: var(--muted);
  line-height: 1.75;
}

.hero-copy p:not(.eyebrow) {
  max-width: 620px;
  font-size: 18px;
}

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

.primary-link,
.secondary-link,
.primary-button,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 700;
}

.primary-link,
.primary-button {
  color: #fff;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  box-shadow: 0 14px 30px rgba(0, 168, 216, 0.22);
}

.secondary-link,
.ghost-button {
  color: var(--graphite);
  background: #fff;
  border-color: var(--line);
}

.hero-visual {
  position: relative;
  min-height: 520px;
  border-radius: 8px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(219, 232, 240, 0.8)),
    repeating-linear-gradient(90deg, rgba(38, 49, 61, 0.06) 0 1px, transparent 1px 68px),
    repeating-linear-gradient(0deg, rgba(38, 49, 61, 0.06) 0 1px, transparent 1px 68px);
  box-shadow: var(--shadow);
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: auto 6% 8% 6%;
  height: 34%;
  background: linear-gradient(180deg, rgba(24, 40, 54, 0.16), rgba(24, 40, 54, 0.02));
  transform: perspective(460px) rotateX(66deg);
  transform-origin: bottom;
}

.hero-visual.has-hero-image {
  background-size: cover;
  background-position: center;
}

.hero-visual.has-hero-image::after,
.hero-visual.has-hero-image .laser-beam,
.hero-visual.has-hero-image .machine,
.hero-visual.has-hero-image .spec-chip {
  display: none;
}

.laser-beam {
  position: absolute;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, rgba(0, 186, 255, 0.95), rgba(246, 164, 52, 0.9), transparent);
  filter: drop-shadow(0 0 12px rgba(0, 186, 255, 0.95));
  transform-origin: left center;
}

.beam-one {
  top: 35%;
  left: 17%;
  width: 58%;
  transform: rotate(-13deg);
}

.beam-two {
  top: 51%;
  left: 31%;
  width: 42%;
  transform: rotate(18deg);
}

.machine {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 8px;
  background: linear-gradient(145deg, #fdfefe, #cdd9e1 70%, #93a3b1);
  box-shadow: 0 22px 48px rgba(24, 40, 54, 0.24);
}

.machine-large {
  right: 9%;
  bottom: 13%;
  width: 52%;
  height: 45%;
}

.machine-large::before {
  content: "";
  position: absolute;
  top: -26%;
  left: 14%;
  width: 38%;
  height: 38%;
  border-radius: 8px 8px 2px 2px;
  background: linear-gradient(145deg, #ffffff, #aebdcc);
}

.lens {
  position: absolute;
  top: 16%;
  left: 24%;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: radial-gradient(circle, #05131c 0 28%, #00a8d8 29% 42%, #dce4ec 43% 100%);
}

.workbed {
  position: absolute;
  right: 11%;
  bottom: 16%;
  width: 45%;
  height: 28%;
  border-radius: 6px;
  background: repeating-linear-gradient(90deg, #354352 0 7px, #536171 7px 12px);
}

.module-a {
  left: 9%;
  bottom: 20%;
  width: 28%;
  height: 24%;
}

.module-b {
  left: 22%;
  top: 13%;
  width: 22%;
  height: 18%;
}

.module-a span,
.module-b span {
  position: absolute;
  inset: 18% 14%;
  border-radius: 6px;
  background: linear-gradient(90deg, #26313d, #6d7b87);
}

.spec-chip {
  position: absolute;
  padding: 10px 13px;
  border-radius: 8px;
  color: #16212c;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 12px 32px rgba(24, 40, 54, 0.14);
  font-weight: 800;
}

.chip-a {
  top: 18%;
  right: 14%;
}

.chip-b {
  left: 13%;
  top: 50%;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  max-width: 1120px;
  margin: -36px auto 0;
  position: relative;
  z-index: 2;
  padding: 0 24px;
}

.metrics div {
  min-height: 112px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
}

.metrics div:first-child {
  border-radius: 8px 0 0 8px;
}

.metrics div:last-child {
  border-radius: 0 8px 8px 0;
}

.metrics strong {
  display: block;
  font-size: 34px;
}

.metrics span {
  color: var(--muted);
}

.section,
.solution-band,
.contact-band {
  padding: 92px 5vw;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 32px;
}

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

.product-card {
  display: flex;
  flex-direction: column;
  min-height: 430px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(26, 45, 68, 0.06);
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.product-card:hover,
.product-card:focus-visible {
  border-color: rgba(0, 168, 216, 0.55);
  box-shadow: 0 18px 46px rgba(26, 45, 68, 0.13);
  transform: translateY(-3px);
  outline: none;
}

.product-art {
  position: relative;
  display: block;
  width: 100%;
  height: 174px;
  margin-bottom: 18px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  overflow: hidden;
  background:
    radial-gradient(circle at 72% 30%, rgba(0, 168, 216, 0.24), transparent 28%),
    linear-gradient(135deg, #eef5f8, #ffffff);
}

.product-art::before,
.product-art::after {
  content: "";
  position: absolute;
  border-radius: 7px;
}

.product-art::before {
  left: 17%;
  bottom: 24%;
  width: 54%;
  height: 34%;
  background: linear-gradient(145deg, #fff, #aebdcc);
  box-shadow: 0 18px 28px rgba(24, 40, 54, 0.18);
}

.product-art::after {
  left: 31%;
  top: 24%;
  width: 20%;
  height: 32%;
  background: linear-gradient(180deg, #26313d, #748391);
}

.product-art.has-image {
  background: #eef5f8;
}

.product-art.has-image::before,
.product-art.has-image::after {
  display: none;
}

.product-art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.art-welder::after {
  left: 18%;
  top: 38%;
  width: 68%;
  height: 8px;
  transform: rotate(-19deg);
  background: linear-gradient(90deg, #26313d, #00a8d8);
}

.art-cutter::before {
  left: 15%;
  bottom: 18%;
  width: 70%;
  height: 42%;
}

.art-module::before {
  left: 20%;
  bottom: 32%;
  width: 62%;
  height: 26%;
  background: linear-gradient(90deg, #26313d, #7e8c98 70%, #00a8d8);
}

.product-card h3 {
  min-height: 52px;
}

.product-card p {
  flex: 1;
  margin-bottom: 20px;
}

.product-meta-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.product-meta-row span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.solution-band {
  background: #101722;
  color: #fff;
}

.solution-band .section-heading p,
.solution-grid p {
  color: rgba(255, 255, 255, 0.68);
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.solution-grid article {
  min-height: 230px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.solution-grid article:hover,
.solution-grid article:focus-visible {
  border-color: rgba(0, 168, 216, 0.55);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-3px);
  outline: none;
}

.solution-grid span {
  display: block;
  margin-bottom: 28px;
  color: var(--amber);
  font-weight: 900;
}

.quality {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: 48px;
  align-items: center;
  background: #fff;
}

.quality-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.quality-list li {
  padding: 18px 0 18px 42px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 10px 27px, var(--green) 0 5px, transparent 6px) no-repeat;
  font-weight: 700;
}

.contact-band {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(360px, 1fr);
  gap: 48px;
  align-items: start;
  background: linear-gradient(135deg, #e9f4f8, #f9fbfd);
}

.contact-form,
.contact-card {
  display: grid;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.contact-card {
  grid-template-columns: minmax(0, 1fr) repeat(2, 190px);
  align-items: stretch;
}

.phone-card,
.wechat-card {
  border-radius: 8px;
  background: #f9fbfd;
  border: 1px solid var(--line);
}

.phone-card {
  padding: 26px;
}

.phone-card span {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-weight: 700;
}

.phone-card a {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--ink);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 900;
  line-height: 1;
}

.phone-card p {
  margin-bottom: 0;
}

.wechat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 18px;
  text-align: center;
}

.wechat-card img {
  width: 132px;
  height: 132px;
  border-radius: 8px;
  background: #fff;
  object-fit: contain;
}

label span {
  display: block;
  margin-bottom: 8px;
  color: #3c4651;
  font-size: 14px;
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  color: var(--ink);
  background: #f9fbfd;
}

textarea {
  min-height: 116px;
  resize: vertical;
}

.modal,
.cart-drawer {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(16, 23, 34, 0.42);
}

.modal-panel {
  width: min(920px, calc(100vw - 28px));
  max-height: calc(100vh - 48px);
  margin: 24px auto;
  overflow: auto;
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.close-modal {
  position: sticky;
  top: 12px;
  left: calc(100% - 52px);
  z-index: 2;
}

.icon-button {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  color: var(--graphite);
  background: #eef4f7;
  font-size: 24px;
}

.modal-body {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 28px;
  padding: 0 32px 32px;
}

.detail-media {
  display: grid;
  gap: 18px;
  align-content: start;
}

.modal-body .product-art {
  height: 340px;
  margin: 0;
}

.detail-section {
  margin-top: 22px;
}

.detail-section h3 {
  margin-bottom: 12px;
  font-size: 18px;
}

.detail-copy {
  display: grid;
  gap: 10px;
  color: var(--muted);
  line-height: 1.75;
}

.detail-copy p {
  margin-bottom: 0;
}

.detail-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.detail-gallery a {
  display: block;
  height: 118px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #f4f8fb;
}

.detail-gallery img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.spec-table {
  display: grid;
  gap: 10px;
  margin: 22px 0;
}

.spec-table div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.spec-table span {
  color: var(--muted);
}

.download-list {
  display: grid;
  gap: 10px;
}

.download-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #f9fbfd;
}

.download-list strong {
  color: var(--cyan);
}

.detail-phone {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 8px;
  color: #fff;
  background: var(--graphite);
  font-weight: 800;
}

.detail-page {
  background: #f8fbfd;
}

.product-detail-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: 48px;
  align-items: center;
  padding: 64px 5vw;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.95), rgba(234, 245, 249, 0.88)),
    radial-gradient(circle at 72% 22%, rgba(0, 168, 216, 0.2), transparent 34%);
}

.product-detail-hero h1 {
  margin-bottom: 18px;
  font-size: clamp(38px, 5vw, 66px);
}

.product-detail-hero > div > p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.back-link {
  display: inline-flex;
  margin-bottom: 22px;
  color: var(--graphite);
  font-weight: 800;
}

.detail-price-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 18px;
  margin-top: 24px;
}

.detail-price-row strong {
  font-size: 32px;
}

.detail-price-row span {
  color: var(--muted);
}

.detail-hero-media {
  min-height: 440px;
  border-radius: 8px;
  overflow: hidden;
  background: #eef5f8;
  box-shadow: var(--shadow);
}

.detail-hero-media > a,
.detail-hero-media img,
.detail-page-gallery a,
.detail-page-gallery img {
  display: block;
  width: 100%;
  height: 100%;
}

.detail-hero-media img,
.detail-page-gallery img {
  object-fit: cover;
}

.detail-hero-media .product-art {
  height: 440px;
  margin: 0;
}

.detail-band {
  display: grid;
  grid-template-columns: minmax(240px, 0.45fr) minmax(0, 1fr);
  gap: 42px;
  padding: 64px 5vw;
  border-top: 1px solid var(--line);
  background: #fff;
}

.detail-band:nth-of-type(odd) {
  background: #f8fbfd;
}

.detail-section-title h2 {
  font-size: clamp(28px, 3vw, 42px);
}

.detail-page-copy {
  max-width: 820px;
  font-size: 17px;
}

.detail-spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.detail-spec-grid div {
  min-height: 86px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.detail-spec-grid span {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 14px;
}

.detail-spec-grid strong {
  font-size: 18px;
}

.detail-page-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.detail-page-gallery > div {
  height: 220px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #eef5f8;
}

.detail-page-gallery .product-art {
  height: 220px;
  margin: 0;
}

.application-visual-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 220px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(0, 168, 216, 0.82), rgba(18, 166, 117, 0.72)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.18) 0 1px, transparent 1px 32px);
  font-weight: 900;
  letter-spacing: 0.08em;
}

.detail-downloads {
  display: grid;
  gap: 12px;
}

.download-item,
.download-empty {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.download-empty p {
  margin-bottom: 0;
  color: var(--muted);
}

.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  font-weight: 800;
  white-space: nowrap;
}

.detail-contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 56px 5vw;
  color: #fff;
  background: #101722;
}

.detail-contact p {
  color: rgba(255, 255, 255, 0.72);
}

.cart-panel {
  margin-left: auto;
  width: min(420px, 100%);
  height: 100%;
  display: flex;
  flex-direction: column;
  background: #fff;
  box-shadow: -20px 0 60px rgba(16, 23, 34, 0.18);
}

.cart-head,
.cart-footer {
  padding: 22px;
  border-bottom: 1px solid var(--line);
}

.cart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cart-head h2 {
  margin: 0;
  font-size: 24px;
}

.cart-items {
  flex: 1;
  overflow: auto;
  padding: 14px 22px;
}

.cart-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.cart-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.cart-item p {
  margin: 0;
  color: var(--muted);
}

.qty-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.qty-control button {
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
}

.cart-footer {
  border-top: 1px solid var(--line);
  border-bottom: 0;
}

.cart-total {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  max-width: min(360px, calc(100vw - 48px));
  padding: 14px 18px;
  border-radius: 8px;
  color: #fff;
  background: var(--graphite);
  box-shadow: var(--shadow);
}


[hidden] {
  display: none !important;
}

@media (max-width: 980px) {
  .hero,
  .quality,
  .contact-band,
  .modal-body,
  .product-detail-hero,
  .detail-band {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 420px;
  }

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

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

  .detail-page-gallery,
  .detail-spec-grid {
    grid-template-columns: 1fr 1fr;
  }

  .metrics div,
  .metrics div:first-child,
  .metrics div:last-child {
    border-radius: 8px;
  }
}

@media (max-width: 680px) {
  .site-header {
    min-height: 64px;
    padding: 0 16px;
  }

  .nav-links {
    display: none;
  }

  .hero,
  .section,
  .solution-band,
  .contact-band {
    padding: 56px 18px;
  }

  .hero {
    padding-top: 42px;
  }

  h1 {
    font-size: 42px;
  }

  .hero-actions,
  .card-actions {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 340px;
  }

  .product-grid,
  .metrics {
    grid-template-columns: 1fr;
  }

  .metrics {
    margin-top: 0;
    padding: 0 18px;
  }

  .contact-band {
    grid-template-columns: 1fr;
  }

  .contact-card {
    grid-template-columns: 1fr;
  }

  .modal-body {
    padding: 0 18px 24px;
  }

  .modal-body .product-art {
    height: 240px;
  }

  .product-detail-hero {
    padding: 42px 18px 56px;
  }

  .detail-hero-media,
  .detail-hero-media .product-art {
    min-height: 0;
    height: 300px;
  }

  .detail-band {
    padding: 46px 18px;
  }

  .detail-page-gallery,
  .detail-spec-grid {
    grid-template-columns: 1fr;
  }

  .download-item,
  .download-empty,
  .detail-contact {
    align-items: stretch;
    flex-direction: column;
  }

  .detail-phone {
    display: none;
  }
}