:root {
  color-scheme: light;
  --ink: #1c2421;
  --muted: #68716d;
  --line: #dce3df;
  --paper: #f8f9fa;
  --white: #ffffff;
  --field: #eef3ef;
  --green: #1b4332;
  --green-dark: #0a3b2a;
  --mint: #4ade80;
  --navy: #0b1d3a;
  --silver: #e7ece9;
  --shadow: 0 18px 50px rgba(11, 29, 58, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

body.admin-body {
  background: #eef3ef;
}

body.drawer-open {
  overflow: hidden;
}

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

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

button,
input,
select {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 16px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(28, 36, 33, 0.1);
  background: rgba(246, 247, 242, 0.9);
  backdrop-filter: blur(18px);
}

.brand,
.cart-button,
.hero-actions,
.main-nav,
.spec-row,
.footer-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 8px;
  background: var(--green-dark);
  color: var(--mint);
  font-size: 13px;
}

.main-nav {
  justify-content: center;
  gap: clamp(14px, 3vw, 34px);
  color: var(--muted);
  font-size: 15px;
}

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

/* 下拉菜单样式 */
.dropdown {
  position: relative;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 24px rgba(24, 35, 31, 0.12);
  z-index: 100;
}

.dropdown-content a {
  display: block;
  padding: 12px 18px;
  color: var(--muted);
  transition: all 0.2s ease;
  border-bottom: 1px solid var(--line);
}

.dropdown-content a:last-child {
  border-bottom: none;
}

.dropdown-content a:hover {
  background: var(--field);
  color: var(--green);
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown > a::after {
  content: ' ▼';
  font-size: 0.7em;
  margin-left: 4px;
}

.cart-button {
  justify-self: end;
  min-height: 42px;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  background: var(--white);
  color: var(--ink);
  cursor: pointer;
}

.cart-button strong {
  display: grid;
  min-width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 999px;
  background: var(--green);
  color: var(--white);
  font-size: 13px;
}

.cart-icon,
.cart-icon::before {
  display: block;
  border: 2px solid currentColor;
}

.cart-icon {
  position: relative;
  width: 19px;
  height: 15px;
  border-top: 0;
}

.cart-icon::before {
  content: "";
  position: absolute;
  top: -7px;
  left: 3px;
  width: 9px;
  height: 7px;
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: clamp(44px, 7vw, 96px) clamp(18px, 5vw, 72px) 44px;
}

.admin-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(24px, 5vw, 72px);
  align-items: end;
  padding: clamp(56px, 8vw, 110px) clamp(18px, 5vw, 72px);
  background: var(--navy);
  color: var(--white);
}

.admin-hero h1 {
  max-width: 980px;
  font-size: clamp(36px, 5.4vw, 68px);
}

.admin-hero p:not(.eyebrow) {
  max-width: 780px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
  line-height: 1.6;
}

.admin-hero .eyebrow {
  color: var(--mint);
}

.admin-actions {
  display: grid;
  gap: 12px;
  min-width: 220px;
}

.admin-actions .secondary-link {
  color: var(--ink);
}

.hero-copy {
  max-width: 680px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(40px, 6.2vw, 72px);
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.02;
  letter-spacing: 0;
}

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

.hero-copy p:not(.eyebrow),
.section-copy p,
.section-heading p,
.feature-list p,
.service-grid p,
.consultation p,
details p,
.site-footer p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.6;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.primary-link,
.secondary-link,
.lead-form button,
.material-form button,
.checkout-form button,
.add-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 12px 18px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 800;
}

.primary-link,
.lead-form button,
.material-form button,
.checkout-form button,
.add-button {
  background: var(--green);
  color: var(--white);
}

.primary-link:hover,
.lead-form button:hover,
.material-form button:hover,
.checkout-form button:hover,
.add-button:hover {
  background: var(--green-dark);
}

.secondary-link {
  border-color: var(--line);
  background: var(--white);
}

.hero-media {
  position: relative;
  min-height: 480px;
}

.hero-media img {
  width: 100%;
  height: min(68vh, 660px);
  object-fit: cover;
  object-position: center;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-product-card {
  position: absolute;
  right: 22px;
  bottom: 22px;
  width: min(280px, calc(100% - 44px));
  border: 1px solid rgba(255, 255, 255, 0.46);
  border-radius: 8px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.16);
}

.hero-product-card span,
.hero-product-card small {
  display: block;
  color: var(--muted);
}

.hero-product-card strong {
  display: block;
  margin: 4px 0;
  font-size: 20px;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.trust-strip div {
  min-height: 112px;
  padding: 24px clamp(18px, 3vw, 36px);
  border-right: 1px solid var(--line);
}

.trust-strip div:last-child {
  border-right: 0;
}

.trust-strip strong,
.trust-strip span {
  display: block;
}

.trust-strip strong {
  margin-bottom: 6px;
  font-size: 19px;
}

.trust-strip span {
  color: var(--muted);
  line-height: 1.45;
}

.category-band,
.detail-band,
.comparison-section,
.service-band,
.consultation,
.faq-section {
  padding: clamp(56px, 7vw, 96px) clamp(18px, 5vw, 72px);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 34px;
}

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

.product-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 24px rgba(24, 35, 31, 0.08);
}

.product-card img {
  width: 100%;
  aspect-ratio: 1.18;
  object-fit: cover;
  background: var(--field);
}

.product-visual {
  position: relative;
  overflow: hidden;
  background: var(--field);
}

.product-visual img {
  width: 100%;
}

.gm-branding::before {
  content: "";
  position: absolute;
  top: 38%;
  left: 33%;
  z-index: 1;
  width: 132px;
  height: 54px;
  border-radius: 8px;
  background: rgba(77, 92, 70, 0.9);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.16);
}

.visual-brand {
  position: absolute;
  top: calc(38% + 16px);
  left: calc(33% + 20px);
  z-index: 2;
  color: #ffffff;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.product-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 12px;
  padding: 18px;
}

.product-body p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.5;
}

.product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-meta span {
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--field);
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 700;
}

.price-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
}

.price-line strong {
  font-size: 24px;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(340px, 1.1fr);
  gap: clamp(24px, 5vw, 70px);
  align-items: center;
  padding: clamp(56px, 8vw, 100px) clamp(18px, 5vw, 72px);
  background: var(--white);
}

.section-copy {
  max-width: 650px;
}

.spec-row {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.spec-row span {
  min-width: 150px;
  border-radius: 8px;
  padding: 14px;
  background: var(--field);
  color: var(--muted);
}

.spec-row strong {
  display: block;
  color: var(--ink);
  font-size: 24px;
}

.image-stack {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  gap: 16px;
  align-items: end;
}

.image-stack img {
  height: 520px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.image-stack img:nth-child(2) {
  height: 390px;
}

.gm-product-stack {
  position: relative;
}

.gm-product-stack::before {
  content: "";
  position: absolute;
  top: 41%;
  left: 12%;
  z-index: 2;
  width: 168px;
  height: 62px;
  border-radius: 8px;
  background: rgba(74, 91, 68, 0.92);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.14);
}

.gm-product-stack::after {
  content: "G-MEOH";
  position: absolute;
  top: calc(41% + 18px);
  left: calc(12% + 27px);
  z-index: 3;
  color: #ffffff;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.detail-band {
  background: var(--navy);
  color: var(--white);
}

.detail-band .eyebrow {
  color: var(--mint);
}

.detail-band .section-heading p,
.detail-band .feature-list p {
  color: rgba(255, 255, 255, 0.73);
}

.feature-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 22px;
  align-items: stretch;
}

.feature-layout img {
  width: 100%;
  height: 560px;
  object-fit: cover;
  object-position: right center;
  border-radius: 8px;
}

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

.feature-list article,
.service-grid article {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.08);
}

.comparison-section {
  background: #eef1eb;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

table {
  width: 100%;
  min-width: 780px;
  border-collapse: collapse;
}

th,
td {
  padding: 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--green-dark);
  color: var(--white);
}

td {
  color: var(--muted);
}

td:first-child {
  color: var(--ink);
  font-weight: 800;
}

tr:last-child td {
  border-bottom: 0;
}

.service-band {
  display: grid;
  grid-template-columns: minmax(220px, 0.45fr) 1fr;
  gap: 28px;
  background: var(--white);
}

.automation-section {
  padding: clamp(56px, 7vw, 96px) clamp(18px, 5vw, 72px);
  background: var(--white);
}

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

.automation-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: linear-gradient(180deg, #ffffff 0%, #f3f6f4 100%);
  box-shadow: 0 10px 28px rgba(11, 29, 58, 0.06);
}

.module-code {
  display: inline-flex;
  margin-bottom: 18px;
  border-radius: 999px;
  padding: 7px 12px;
  background: var(--navy);
  color: var(--mint);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.automation-grid ul {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.materials-section {
  padding: clamp(56px, 7vw, 96px) clamp(18px, 5vw, 72px);
  background: #eef3ef;
}

.materials-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: clamp(22px, 5vw, 70px);
  align-items: start;
}

.materials-copy {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.materials-copy article {
  min-height: 230px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: var(--white);
}

.materials-copy span {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  margin-bottom: 22px;
  border-radius: 50%;
  background: var(--green-dark);
  color: var(--mint);
  font-weight: 900;
}

.materials-copy p {
  color: var(--muted);
  line-height: 1.55;
}

.local-console {
  display: grid;
  grid-template-columns: 230px 1fr;
  margin-top: 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--navy);
  box-shadow: var(--shadow);
}

.console-sidebar {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 22px;
  color: var(--white);
}

.console-sidebar strong {
  margin-bottom: 10px;
  color: var(--mint);
}

.console-sidebar button,
.console-toolbar button,
.lead-row button,
.reply-preview button {
  min-height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.08);
  color: inherit;
  cursor: pointer;
  font-weight: 800;
}

.console-sidebar button.active {
  background: var(--mint);
  color: var(--navy);
}

.console-main {
  display: grid;
  gap: 12px;
  padding: 22px;
  background: #f8f9fa;
}

.console-toolbar,
.lead-row,
.reply-preview div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.console-toolbar {
  color: var(--navy);
  font-weight: 900;
}

.console-toolbar button,
.lead-row button,
.reply-preview button {
  border-color: var(--line);
  background: var(--green);
  color: var(--white);
}

.lead-row {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--white);
}

.lead-row small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
}

.status-dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 5px rgba(74, 222, 128, 0.18);
}

.status-dot.blue {
  background: #60a5fa;
  box-shadow: 0 0 0 5px rgba(96, 165, 250, 0.16);
}

.reply-preview {
  border-radius: 8px;
  padding: 18px;
  background: #eef3ef;
}

.reply-preview p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.55;
}

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

.service-grid article {
  border-color: var(--line);
  background: var(--field);
}

.consultation {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 0.65fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
  background: var(--green-dark);
  color: var(--white);
}

.consultation .eyebrow {
  color: var(--mint);
}

.consultation p {
  color: rgba(255, 255, 255, 0.74);
}

.lead-form,
.material-form,
.checkout-form {
  display: grid;
  gap: 14px;
}

.lead-form,
.material-form {
  border-radius: 8px;
  padding: 22px;
  background: var(--white);
  color: var(--ink);
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--white);
  color: var(--ink);
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.faq-section {
  background: var(--paper);
}

details {
  max-width: 920px;
  border-top: 1px solid var(--line);
  padding: 18px 0;
}

details:last-child {
  border-bottom: 1px solid var(--line);
}

summary {
  cursor: pointer;
  font-size: 20px;
  font-weight: 800;
}

details p {
  margin: 14px 0 0;
}

.cart-drawer {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: none;
  justify-content: flex-end;
  background: rgba(17, 27, 23, 0.42);
}

.cart-drawer[aria-hidden="false"] {
  display: flex;
}

.drawer-panel {
  width: min(100%, 440px);
  height: 100%;
  overflow-y: auto;
  padding: 24px;
  background: var(--white);
  box-shadow: -20px 0 50px rgba(0, 0, 0, 0.18);
}

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.drawer-head h2 {
  margin: 0;
  font-size: 28px;
}

.drawer-head button {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  cursor: pointer;
  font-size: 24px;
}

.cart-items {
  display: grid;
  gap: 12px;
}

.cart-item {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}

.cart-item img {
  width: 70px;
  height: 70px;
  object-fit: cover;
  border-radius: 6px;
}

.cart-item h3 {
  margin: 0 0 4px;
  font-size: 15px;
}

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

.qty-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.qty-controls button {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--field);
  cursor: pointer;
}

.cart-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 22px 0;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  font-size: 18px;
}

.empty-cart {
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 24px;
  color: var(--muted);
  text-align: center;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 34px clamp(18px, 5vw, 72px);
  background: var(--green-dark);
  color: var(--white);
}

.site-footer p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.66);
}

.footer-links {
  gap: 18px;
  color: rgba(255, 255, 255, 0.78);
}

@media (max-width: 1100px) {
  .product-grid,
  .trust-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-band,
  .service-grid,
  .automation-grid,
  .materials-layout,
  .materials-copy {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .cart-button {
    grid-column: 2;
    grid-row: 1;
  }

  .main-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero,
  .admin-hero,
  .split-section,
  .feature-layout,
  .consultation,
  .local-console,
  .materials-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-media,
  .feature-layout img {
    min-height: 0;
  }

  .hero-media img,
  .feature-layout img {
    height: auto;
    max-height: none;
  }

  .image-stack {
    grid-template-columns: 1fr;
  }

  .image-stack img,
  .image-stack img:nth-child(2) {
    height: auto;
  }

  .console-toolbar,
  .lead-row,
  .reply-preview div {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .site-header {
    padding: 12px 14px;
  }

  .cart-button span:not(.cart-icon) {
    display: none;
  }

  .hero,
  .category-band,
  .detail-band,
  .comparison-section,
  .service-band,
  .consultation,
  .faq-section,
  .split-section {
    padding-left: 14px;
    padding-right: 14px;
  }

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

  .trust-strip div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 32px;
  }

  .site-footer {
    flex-direction: column;
  }
}