:root {
  --ink: #17222b;
  --muted: #5d6b75;
  --line: #d8e2e6;
  --paper: #f7faf8;
  --white: #ffffff;
  --teal: #0f9f94;
  --teal-deep: #0a6863;
  --aqua: #dff6f2;
  --gold: #d79d2b;
  --coral: #d66b4c;
  --steel: #536778;
  --shadow: 0 20px 50px rgba(17, 34, 42, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

body.modal-open {
  overflow: hidden;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 12px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid rgba(216, 226, 230, 0.8);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
}

.brand {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  gap: 18px;
  min-width: 398px;
  min-height: 118px;
  padding: 12px 24px 12px 16px;
  overflow: hidden;
  border: 1px solid rgba(38, 216, 203, 0.58);
  border-radius: 8px;
  background:
    radial-gradient(circle at 14% 18%, rgba(43, 214, 204, 0.28), transparent 30%),
    linear-gradient(135deg, #07131d 0%, #101f2d 48%, #073d3b 100%);
  box-shadow:
    0 20px 42px rgba(6, 19, 28, 0.24),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset,
    0 -16px 38px rgba(31, 196, 184, 0.16) inset;
  color: #f7fbfa;
  font-weight: 900;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.brand::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(215, 157, 43, 0.92), rgba(38, 216, 203, 0.55));
  clip-path: polygon(0 0, 100% 0, 100% 5px, 0 5px);
  opacity: 0.9;
}

.brand::after {
  content: "";
  position: absolute;
  right: -34px;
  bottom: -42px;
  z-index: 0;
  width: 150px;
  height: 150px;
  border: 1px solid rgba(38, 216, 203, 0.32);
  transform: rotate(28deg);
  background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.08));
  pointer-events: none;
}

.brand:hover,
.brand:focus-visible {
  border-color: rgba(215, 157, 43, 0.78);
  box-shadow:
    0 24px 48px rgba(6, 19, 28, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.08) inset,
    0 -16px 42px rgba(31, 196, 184, 0.22) inset;
  transform: translateY(-1px);
}

.brand-mark {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 188px;
  height: 96px;
  flex: 0 0 auto;
  padding: 8px 18px 18px;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(239, 247, 246, 0.96));
  box-shadow:
    0 12px 24px rgba(2, 12, 18, 0.26),
    0 0 0 1px rgba(16, 31, 45, 0.06) inset;
  clip-path: polygon(0 0, 94% 0, 100% 16%, 100% 100%, 6% 100%, 0 84%);
}

.brand-mark::after {
  content: "";
  position: absolute;
  right: 7px;
  top: 7px;
  bottom: 7px;
  width: 3px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--gold), rgba(15, 159, 148, 0.88));
}

.brand-mark img {
  display: block;
  width: 144px;
  height: auto;
  max-height: 74px;
  object-fit: contain;
  object-position: center center;
  transform: translateY(-10px);
}

.brand-name {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  min-height: 58px;
  padding-left: 20px;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 30px;
  line-height: 1;
  letter-spacing: 0;
  text-shadow: 0 0 22px rgba(38, 216, 203, 0.32);
  white-space: nowrap;
}
.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-size: 15px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 72px;
  min-height: 42px;
  padding: 8px 18px;
  border: 1px solid rgba(180, 196, 206, 0.8);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--steel);
  font-weight: 700;
  box-shadow: 0 8px 18px rgba(23, 34, 43, 0.05);
  transition:
    background 160ms ease,
    border-color 160ms ease,
    color 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-color: rgba(15, 159, 148, 0.55);
  background: var(--aqua);
  color: var(--teal-deep);
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(10, 104, 99, 0.12);
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  padding: 12px 20px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.nav-cta {
  color: var(--white);
  background: var(--teal-deep);
}

.nav-cta:hover,
.button:hover {
  transform: translateY(-1px);
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 0;
  aspect-ratio: 16 / 9;
  padding: 0;
  overflow: hidden;
  background: url("assets/home-hero-feishi-20260623.png") center / cover no-repeat;
}

.hero::after {
  content: none;
}

.hero-content {
  display: none;
}

.kicker {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 14px;
  font-weight: 800;
}

.hero .kicker {
  color: #91f2e8;
}

.hero h1,
.section h2 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 650px;
  font-size: clamp(42px, 7vw, 76px);
}

.hero-lead {
  max-width: 590px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.button-primary {
  color: var(--white);
  background: var(--teal);
  box-shadow: 0 16px 34px rgba(15, 159, 148, 0.34);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #0b8b82;
}

.button-secondary {
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
}

.hero .button-secondary {
  color: var(--white);
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(255, 255, 255, 0.38);
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  width: min(780px, 100%);
  margin-top: 46px;
}

.trust-strip span {
  min-height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  padding: 10px 12px;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.11);
  font-size: 14px;
  text-align: center;
}

.signal-band {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.signal-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  background: var(--line);
}

.signal-inner div {
  min-height: 112px;
  padding: 26px clamp(18px, 3vw, 34px);
  background: var(--white);
}

.signal-inner strong,
.quality-grid strong,
.site-footer strong {
  display: block;
  margin-bottom: 4px;
  font-size: 17px;
}

.signal-inner span,
.quality-grid span,
.site-footer span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: clamp(68px, 9vw, 112px) clamp(20px, 6vw, 72px);
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 38px;
  text-align: center;
}

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

.section h2 {
  font-size: clamp(30px, 4vw, 48px);
}

.section-heading p:not(.kicker),
.factory-copy p,
.quote-copy p {
  color: var(--muted);
  font-size: 17px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
  align-items: start;
}

.product-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
  background: var(--white);
  box-shadow: 0 12px 32px rgba(23, 34, 43, 0.06);
  cursor: pointer;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.product-card:hover,
.product-card:focus-visible,
.product-card.is-active {
  border-color: rgba(15, 159, 148, 0.55);
  box-shadow: 0 18px 42px rgba(23, 34, 43, 0.12);
  transform: translateY(-2px);
}

.product-card:focus-visible {
  outline: 3px solid rgba(15, 159, 148, 0.24);
  outline-offset: 3px;
}

.product-card.is-active {
  background: linear-gradient(180deg, #ffffff 0%, #f4fbfa 100%);
}

.product-code {
  display: grid;
  width: 60px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  color: var(--teal-deep);
  background: var(--aqua);
  font-weight: 900;
}

.product-code.accent {
  color: #884c0b;
  background: #fff0c7;
}

.product-code.warm {
  color: #8f321c;
  background: #ffe2d8;
}

.product-code.steel {
  color: #2a3f50;
  background: #e7edf2;
}

.product-card h3 {
  margin: 24px 0 10px;
  font-size: 24px;
  line-height: 1.25;
}

.product-card p {
  margin: 0;
  color: var(--muted);
}

.product-card dl {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
}

.product-card dl div {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.product-card dt {
  color: var(--muted);
  font-size: 13px;
}

.product-card dd {
  margin: 2px 0 0;
  font-weight: 700;
}

.feishi-subtype-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.subtype-card {
  display: grid;
  gap: 5px;
  min-height: 100px;
  border: 1px solid rgba(180, 196, 206, 0.75);
  border-radius: 8px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 8px 18px rgba(23, 34, 43, 0.04);
  cursor: pointer;
  transition:
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.subtype-card:hover,
.subtype-card:focus-visible,
.subtype-card.is-active {
  border-color: rgba(15, 159, 148, 0.55);
  background: #f4fbfa;
  box-shadow: 0 14px 30px rgba(10, 104, 99, 0.12);
  outline: none;
  transform: translateY(-1px);
}

.subtype-card span {
  color: var(--teal-deep);
  font-size: 12px;
  font-weight: 900;
}

.subtype-card h3 {
  margin: 0;
  font-size: 18px;
}

.subtype-card p {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}

.catalog-panel {
  max-width: 1180px;
  margin: 34px auto 0;
  border-top: 1px solid var(--line);
  padding-top: 34px;
}

.catalog-head {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 24px;
  align-items: end;
}

.catalog-head h3 {
  margin: 0;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.15;
}

.catalog-tools {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(160px, 0.7fr);
  gap: 12px;
}

.catalog-meta {
  margin: 18px 0 16px;
  color: var(--muted);
  font-size: 14px;
}

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

.database-card {
  display: grid;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 30px rgba(23, 34, 43, 0.06);
  cursor: pointer;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.database-card:hover,
.database-card:focus-visible {
  border-color: rgba(15, 159, 148, 0.45);
  box-shadow: 0 18px 38px rgba(15, 159, 148, 0.16);
  outline: none;
  transform: translateY(-2px);
}

.database-card-image {
  display: grid;
  min-height: 210px;
  place-items: center;
  color: var(--teal-deep);
  background: #eef8f6;
  font-weight: 800;
}

.database-card-image img {
  width: 100%;
  height: 230px;
  object-fit: contain;
  padding: 12px;
  background: #f8fbfa;
}

.database-card-body {
  display: grid;
  gap: 10px;
  padding: 18px;
}

.database-category {
  width: fit-content;
  border-radius: 999px;
  padding: 4px 10px;
  color: var(--teal-deep);
  background: var(--aqua);
  font-size: 12px;
  font-weight: 900;
}

.database-card h3 {
  margin: 0;
  font-size: 19px;
  line-height: 1.3;
}

.database-sku {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  font-family: Consolas, "Microsoft YaHei", monospace;
}

.database-specs {
  display: grid;
  gap: 6px;
  margin: 0;
}

.database-specs div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 7px;
}

.database-specs dt {
  color: var(--muted);
  font-size: 13px;
}

.database-specs dd {
  margin: 0;
  font-weight: 800;
}

.database-note {
  display: -webkit-box;
  min-height: 44px;
  margin: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 13px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.database-price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.database-price-row span {
  color: var(--muted);
  font-size: 13px;
}

.database-price-row strong {
  color: var(--teal-deep);
  font-size: 20px;
}

.database-card-action {
  display: inline-flex;
  justify-content: center;
  min-height: 40px;
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--white);
  background: var(--teal-deep);
  font-size: 14px;
  font-weight: 800;
}

.product-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
}

.product-modal.is-open {
  display: block;
}

.product-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 18, 24, 0.58);
}

.product-modal-panel {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(1060px, calc(100vw - 32px));
  max-height: min(760px, calc(100vh - 32px));
  overflow: auto;
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
  transform: translate(-50%, -50%);
}

.product-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 1;
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: var(--white);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.product-modal-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.95fr) minmax(0, 1.05fr);
}

.product-modal-image {
  display: grid;
  min-height: 520px;
  place-items: center;
  color: var(--teal-deep);
  background: #f2faf8;
  font-weight: 900;
}

.product-modal-image img {
  width: 100%;
  height: auto;
  max-height: 620px;
  object-fit: contain;
  padding: 26px;
}

.product-modal-copy {
  display: grid;
  align-content: start;
  gap: 18px;
  padding: 42px;
}

.product-modal-copy h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
}

.product-modal-sku {
  margin: 0;
  color: var(--muted);
  font-family: Consolas, "Microsoft YaHei", monospace;
}

.product-modal-specs {
  display: grid;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.product-modal-specs div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}

.product-modal-specs dt {
  color: var(--muted);
}

.product-modal-specs dd {
  margin: 0;
  font-weight: 900;
}

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

.price-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: #fbfdfc;
}

.price-card span,
.price-card small {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.price-card strong {
  display: block;
  margin: 6px 0 4px;
  color: var(--teal-deep);
  font-size: 30px;
  line-height: 1.1;
}

.product-buy-button {
  width: 100%;
}

.product-buy-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
  box-shadow: none;
}

.buy-link-note {
  margin: -8px 0 0;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.custom-section {
  background: #eef8f6;
}

.custom-layout,
.factory-layout,
.quote-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 6vw, 72px);
  max-width: 1180px;
  margin: 0 auto;
  align-items: center;
}

.process-list {
  display: grid;
  gap: 14px;
}

.process-step {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  border: 1px solid rgba(15, 159, 148, 0.18);
  border-radius: 8px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.78);
}

.process-step span {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 8px;
  color: var(--white);
  background: var(--teal-deep);
  font-weight: 900;
}

.process-step h3,
.process-step p {
  margin: 0;
}

.process-step h3 {
  font-size: 20px;
}

.process-step p {
  color: var(--muted);
}

.factory-photo {
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.factory-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.quality-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.quality-grid div {
  min-height: 122px;
  border-left: 4px solid var(--teal);
  border-radius: 8px;
  padding: 18px;
  background: var(--white);
}
.quality-grid strong {
  margin-bottom: 10px;
  font-size: 24px;
  line-height: 1.25;
}

.quality-grid span {
  font-size: 17px;
  line-height: 1.7;
}

.quality-grid div {
  min-height: 148px;
  padding: 24px 28px;
}

.quote-section {
  background: #17222b;
  color: var(--white);
}

.quote-copy p {
  color: rgba(255, 255, 255, 0.74);
}

.contact-panel {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

.contact-panel span {
  display: block;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  padding: 15px 16px;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.07);
}

.wecom-card {
  max-width: 360px;
  margin: 22px 0 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.18);
}

.wecom-card img {
  display: block;
  width: 100%;
  border-radius: 6px;
  background: #ffffff;
}

.wecom-card figcaption {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  text-align: center;
}

.quote-form {
  display: grid;
  gap: 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  padding: clamp(22px, 4vw, 34px);
  color: var(--ink);
  background: var(--white);
  box-shadow: var(--shadow);
}

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

label,
legend {
  color: #2b3a42;
  font-size: 14px;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 13px;
  color: var(--ink);
  background: #fbfdfc;
  font: inherit;
}

input:focus,
select:focus,
textarea:focus,
button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(15, 159, 148, 0.28);
  outline-offset: 2px;
}

textarea {
  resize: vertical;
}

fieldset {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

fieldset label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  font-weight: 700;
}

fieldset input {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--teal);
}

.full-button {
  width: 100%;
}

.quote-output {
  display: none;
  min-height: 96px;
  border: 1px solid #b9dde0;
  border-radius: 8px;
  padding: 16px;
  color: #1f4044;
  background: #effbfa;
  white-space: pre-wrap;
}

.quote-output.is-visible {
  display: block;
}

#copyQuote {
  display: none;
}

#copyQuote.is-visible {
  display: inline-flex;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 6vw, 72px);
  background: var(--white);
  border-top: 1px solid var(--line);
}

.site-footer div {
  display: grid;
  gap: 2px;
}

.site-footer a {
  color: var(--teal-deep);
  font-weight: 800;
}

@media (max-width: 980px) {
  .site-nav {
    display: none;
  }

  .hero {
    min-height: 0;
    padding: 0;
    background: url("assets/home-hero-feishi-20260623.png") center / cover no-repeat;
  }

  .trust-strip,
  .product-grid,
  .feishi-subtype-grid,
  .database-grid,
  .catalog-head,
  .signal-inner,
  .custom-layout,
  .factory-layout,
  .quote-layout {
    grid-template-columns: 1fr;
  }

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

  .product-card p {
    min-height: 0;
  }

  .feishi-subtype-grid {
    max-width: 100%;
  }

  .catalog-tools {
    grid-template-columns: 1fr;
  }

  .product-modal-layout,
  .price-grid {
    grid-template-columns: 1fr;
  }

  .product-modal-image {
    min-height: 320px;
  }

  .product-modal-image img {
    max-height: 52vh;
    padding: 14px;
  }

  .product-modal-copy {
    padding: 28px;
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: 64px;
    padding: 10px 16px;
  }

  .brand {
    min-width: 0;
    min-height: 76px;
    gap: 10px;
    padding: 8px 10px;
  }

  .brand-mark {
    width: 112px;
    height: 64px;
    padding: 6px 10px 12px;
  }

  .brand-mark img {
    width: 88px;
    max-height: 48px;
    transform: translateY(-7px);
  }

  .brand-name {
    min-height: 42px;
    padding-left: 10px;
    font-size: 18px;
  }
  .nav-cta {
    min-height: 40px;
    padding: 9px 12px;
    font-size: 14px;
  }

  .hero {
    padding: 0;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-actions,
  .form-row,
  .quality-grid,
  fieldset {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
    margin-top: 26px;
  }

  .button,
  .hero-actions a {
    width: 100%;
  }

  .trust-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-top: 28px;
  }

  .trust-strip span {
    min-height: 42px;
    padding: 9px 10px;
    text-align: left;
  }

  .section {
    padding-inline: 18px;
  }

  .signal-inner div {
    min-height: auto;
  }

  .process-step {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 14px;
    padding: 18px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}
@media (max-width: 640px) {
  .quality-grid div {
    min-height: 132px;
    padding: 22px;
  }

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

  .quality-grid span {
    font-size: 16px;
  }
}