:root {
  --green: #00675b;
  --green-2: #0a8b7c;
  --green-dark: #003f38;
  --ink: #172023;
  --muted: #667276;
  --line: #e2e7e7;
  --paper: #ffffff;
  --soft: #f4f7f6;
  --dark: #0b1112;
  --shadow: 0 20px 50px rgba(14, 31, 34, .11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  line-height: 1.7;
  background:
    linear-gradient(180deg, #fff 0, #fff 46%, #f7faf9 100%);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .92);
  border-bottom: 1px solid rgba(226, 231, 231, .8);
  box-shadow: 0 10px 30px rgba(13, 27, 29, .05);
  backdrop-filter: blur(12px);
}

.header-inner {
  width: min(1180px, calc(100% - 44px));
  min-height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand img {
  width: 176px;
  height: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: #253033;
  font-size: 15px;
  white-space: nowrap;
}

.main-nav a {
  position: relative;
  padding: 10px 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--green), var(--green-2));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .2s ease;
}

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

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

.main-nav a.is-active {
  color: var(--green);
  font-weight: 700;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  place-items: center;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 3px 0;
  background: var(--green);
}

.hero {
  position: relative;
  min-height: clamp(560px, 70vh, 720px);
  overflow: hidden;
  background: #050505;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(2, 8, 9, .86) 0%, rgba(2, 8, 9, .55) 42%, rgba(2, 8, 9, .08) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0) 72%, rgba(0, 0, 0, .38) 100%);
  pointer-events: none;
}

.hero-track {
  position: absolute;
  inset: 0;
  display: grid;
}

.hero-track img {
  grid-area: 1 / 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  animation: fadeHero 15s infinite;
}

.hero-track img:nth-child(1) {
  opacity: 1;
}

.hero-track img:nth-child(2) {
  animation-delay: 5s;
}

.hero-track img:nth-child(3) {
  animation-delay: 10s;
}

@keyframes fadeHero {
  0%, 28% { opacity: 1; }
  34%, 94% { opacity: 0; }
  100% { opacity: 1; }
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 44px));
  min-height: clamp(560px, 70vh, 720px);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  max-width: 1180px;
  color: #fff;
}

.hero-content h1 {
  max-width: 720px;
  margin: 0 0 20px;
  font-size: clamp(40px, 6vw, 78px);
  line-height: 1.05;
  font-weight: 700;
}

.hero-content p:not(.eyebrow) {
  max-width: 660px;
  margin: 0;
  color: rgba(255, 255, 255, .82);
  font-size: 18px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 25px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 700;
  transition: transform .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--green);
  color: #fff;
}

.button.ghost {
  border-color: rgba(255, 255, 255, .55);
  color: #fff;
}

.button.outline {
  border-color: var(--green);
  color: var(--green);
}

.button.outline:hover {
  background: var(--green);
  color: #fff;
}

.button.ghost-dark {
  border-color: rgba(255, 255, 255, .4);
  color: #fff;
}

.proof-strip {
  position: relative;
  z-index: 2;
  width: min(1180px, calc(100% - 44px));
  margin: -54px auto 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.proof-strip div {
  padding: 26px 28px;
  border-right: 1px solid var(--line);
}

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

.proof-strip strong {
  display: block;
  color: var(--green);
  font-size: clamp(22px, 2vw, 27px);
  line-height: 1.1;
  word-break: keep-all;
  white-space: nowrap;
}

.proof-strip span {
  color: var(--muted);
  font-size: 14px;
}

.split-section,
.content-section,
.product-section,
.showroom-section,
.tech-section,
.contact-section {
  padding: 92px max(24px, calc((100vw - 1180px) / 2));
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  gap: 70px;
  align-items: center;
}

.section-copy p {
  margin: 0 0 16px;
  color: #4f5b5f;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.hero-content .eyebrow,
.statement .eyebrow {
  color: #70dacd;
}

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

h2 {
  margin-bottom: 22px;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.16;
  font-weight: 700;
}

h3 {
  margin-bottom: 10px;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 700;
}

.image-panel {
  position: relative;
}

.image-panel::before {
  content: "";
  position: absolute;
  inset: 26px -22px -22px 26px;
  border: 1px solid rgba(0, 103, 91, .22);
  border-radius: 8px;
}

.image-panel img {
  position: relative;
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

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

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

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

.section-heading h2 {
  margin-bottom: 10px;
}

.section-heading p:not(.eyebrow) {
  margin: 0;
  color: var(--muted);
}

.category-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 0 auto 14px;
}

.category-bar button,
.province-list span {
  padding: 10px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #4e5a5d;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

.category-bar button:hover,
.category-bar button.is-active {
  border-color: var(--green);
  background: var(--green);
  color: #fff;
  box-shadow: 0 8px 24px rgba(0, 103, 91, .1);
}

.filter-status {
  margin: 0 0 30px;
  color: var(--green);
  font-weight: 700;
  text-align: center;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.product-card {
  min-width: 0;
  padding: 18px;
  background: #fff;
  border: 1px solid rgba(226, 231, 231, .9);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(12, 29, 31, .06);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.product-card.is-hidden {
  display: none;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 103, 91, .28);
  box-shadow: 0 22px 44px rgba(12, 29, 31, .12);
}

.product-card img {
  width: 100%;
  aspect-ratio: 1.35 / 1;
  object-fit: contain;
  padding: 10px;
  background: linear-gradient(180deg, #fff 0%, #f7faf9 100%);
  border-radius: 6px;
}

.product-card h3 {
  margin: 18px 0 6px;
  font-size: 16px;
}

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

.product-card span {
  display: inline-flex;
  align-items: center;
  margin-top: 14px;
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
}

.product-card span::after {
  content: ">";
  margin-left: 8px;
  transition: transform .18s ease;
}

.product-card:hover span::after {
  transform: translateX(4px);
}

.statement {
  min-height: 430px;
  padding: 110px max(24px, calc((100vw - 1180px) / 2));
  display: flex;
  align-items: center;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(3, 12, 13, .84), rgba(3, 12, 13, .52) 45%, rgba(3, 12, 13, .12)),
    url("assets/section-bg.jpeg") center / cover no-repeat;
}

.statement div {
  max-width: 680px;
}

.statement p:not(.eyebrow) {
  max-width: 620px;
  color: rgba(255, 255, 255, .8);
  font-size: 17px;
}

.news-layout {
  display: grid;
  grid-template-columns: minmax(300px, 430px) 1fr;
  gap: 54px;
  align-items: start;
}

.feature-news {
  min-height: 280px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: #fff;
  background:
    linear-gradient(160deg, rgba(0, 103, 91, .9), rgba(7, 20, 22, .96)),
    url("assets/hero-4.jpeg") center / cover no-repeat;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

time {
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
}

.feature-news time {
  color: #b8fff6;
}

.feature-news p {
  color: rgba(255, 255, 255, .78);
}

.news-list {
  border-top: 1px solid var(--line);
}

.news-list a {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.news-list span {
  transition: color .18s ease, transform .18s ease;
}

.news-list a:hover span {
  color: var(--green);
}

.showroom-section {
  background: #fff;
}

.province-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.province-list span {
  border-radius: 6px;
  background: #f7faf9;
}

.tech-section {
  background: linear-gradient(180deg, #f5f8f8 0%, #fff 100%);
}

.tech-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr;
  gap: 24px;
}

.tech-card {
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(12, 29, 31, .06);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

a.tech-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 103, 91, .28);
  box-shadow: var(--shadow);
}

.tech-card.featured {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 24px;
}

.tech-card img {
  width: 100%;
  height: 130px;
  object-fit: cover;
  border-radius: 6px;
}

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

.tech-card span {
  display: inline-flex;
  margin-top: 14px;
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
}

.tech-card span::after {
  content: ">";
  margin-left: 8px;
  transition: transform .18s ease;
}

a.tech-card:hover span::after {
  transform: translateX(4px);
}

.contact-section {
  background: var(--dark);
}

.contact-card {
  display: grid;
  grid-template-columns: 1fr minmax(320px, 520px);
  gap: 58px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 46px;
  color: #fff;
  background: linear-gradient(135deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .03));
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 10px;
}

.contact-card img {
  width: 100%;
  border-radius: 8px;
}

.contact-list {
  margin: 0;
}

.contact-list div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}

.contact-list dt {
  color: #70dacd;
  font-weight: 700;
}

.contact-list dd {
  margin: 0;
  color: rgba(255, 255, 255, .78);
}

.site-footer {
  display: flex;
  justify-content: center;
  gap: 32px;
  padding: 24px;
  background: #070b0c;
  color: #aeb8ba;
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.detail-page {
  background: #f2f7f6;
}

.detail-hero {
  padding: 74px max(24px, calc((100vw - 1180px) / 2));
  color: #fff;
  background:
    linear-gradient(90deg, rgba(0, 70, 63, .92), rgba(0, 103, 91, .72)),
    url("assets/section-bg.jpeg") center / cover no-repeat;
}

.detail-hero.compact {
  padding-top: 58px;
  padding-bottom: 82px;
}

.detail-hero h1 {
  max-width: 820px;
  margin: 0 0 12px;
  font-size: clamp(34px, 4.5vw, 58px);
  line-height: 1.12;
}

.detail-hero p:not(.eyebrow) {
  margin: 0;
  color: rgba(255, 255, 255, .78);
}

.detail-shell {
  width: min(1180px, calc(100% - 44px));
  margin: -44px auto 92px;
  display: grid;
  grid-template-columns: 270px 1fr;
  gap: 28px;
  align-items: start;
}

.detail-sidebar,
.detail-content {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.detail-sidebar {
  padding: 20px;
  position: sticky;
  top: 104px;
}

.sidebar-title {
  padding: 24px 18px;
  margin-bottom: 16px;
  color: #fff;
  background: var(--green);
  border-radius: 6px;
}

.sidebar-title strong,
.sidebar-title span {
  display: block;
}

.sidebar-title strong {
  font-size: 22px;
}

.sidebar-title span {
  margin-top: 4px;
  color: rgba(255, 255, 255, .48);
  letter-spacing: .28em;
  font-size: 12px;
}

.detail-sidebar button {
  width: 100%;
  min-height: 44px;
  margin-bottom: 8px;
  padding: 0 14px;
  border: 1px solid rgba(0, 103, 91, .16);
  border-radius: 4px;
  background: #eef7f5;
  color: var(--green-dark);
  font: inherit;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.detail-sidebar button:hover,
.detail-sidebar button.is-active,
.sidebar-link:hover,
.sidebar-link.is-active {
  background: var(--green);
  color: #fff;
}

.sidebar-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  margin-bottom: 8px;
  padding: 0 14px;
  border: 1px solid rgba(0, 103, 91, .16);
  border-radius: 4px;
  background: #eef7f5;
  color: var(--green-dark);
  font-weight: 700;
}

.hotline-box {
  margin-top: 24px;
  padding: 20px;
  border: 3px solid var(--green);
  border-radius: 6px;
  background: #f9fffd;
}

.hotline-box span,
.hotline-box strong,
.hotline-box a {
  display: block;
}

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

.hotline-box strong {
  margin: 4px 0 14px;
  color: var(--green);
  font-size: 28px;
  line-height: 1.1;
}

.hotline-box a {
  width: max-content;
  padding: 8px 14px;
  color: #fff;
  background: var(--green);
  border-radius: 4px;
  font-weight: 700;
}

.detail-content {
  padding: 38px;
}

.detail-label {
  width: max-content;
  min-width: 180px;
  margin-bottom: 22px;
  padding: 10px 28px;
  background: var(--green);
  color: #fff;
  font-weight: 700;
  text-align: center;
}

.detail-main {
  display: grid;
  grid-template-columns: minmax(280px, 520px) 1fr;
  gap: 34px;
  align-items: center;
}

.detail-main img {
  width: 100%;
  max-height: 390px;
  object-fit: contain;
  padding: 24px;
  background: #f8fbfa;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.detail-summary h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 3vw, 40px);
}

.detail-summary p:not(.eyebrow) {
  color: #4d595d;
}

.detail-section {
  margin-top: 34px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.detail-section ul {
  margin: 0;
  padding-left: 20px;
  color: #4d595d;
}

.spec-section {
  overflow-x: auto;
}

.spec-section table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 14px;
}

.spec-section th,
.spec-section td {
  padding: 14px;
  border: 1px solid var(--line);
  text-align: left;
}

.spec-section th {
  color: #fff;
  background: var(--green);
}

.spec-section td {
  background: #fff;
}

.detail-pager {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.detail-pager a {
  color: var(--green);
  font-weight: 700;
}

.section-more {
  margin-top: 34px;
  text-align: center;
}

.listing-shell {
  width: min(1180px, calc(100% - 44px));
  margin: -44px auto 92px;
  display: grid;
  grid-template-columns: 270px 1fr;
  gap: 28px;
  align-items: start;
}

.listing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.list-card {
  min-width: 0;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(12, 29, 31, .06);
  transition: transform .2s ease, box-shadow .2s ease;
}

.list-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.list-card img {
  width: 100%;
  aspect-ratio: 1.35 / 1;
  object-fit: contain;
  padding: 12px;
  margin-bottom: 16px;
  background: #f8fbfa;
  border-radius: 6px;
}

.list-card h3 {
  margin-bottom: 8px;
  font-size: 17px;
}

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

.article-shell {
  width: min(900px, calc(100% - 44px));
  margin: -44px auto 92px;
  padding: 42px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.article-shell.page-body {
  width: auto;
  margin: 0;
}

.article-body {
  color: #425055;
  font-size: 16px;
}

.article-body p {
  margin-bottom: 16px;
}

@media (max-width: 980px) {
  .header-inner {
    width: min(100% - 28px, 1180px);
    min-height: 70px;
  }

  .brand img {
    width: 148px;
  }

  .nav-toggle {
    display: grid;
  }

  .main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 70px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 18px;
    background: rgba(255, 255, 255, .98);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 16px 28px rgba(13, 27, 29, .08);
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 0;
    border-bottom: 1px solid #edf1f1;
  }

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

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

  .proof-strip div:nth-child(2) {
    border-right: 0;
  }

  .proof-strip div:nth-child(-n+2) {
    border-bottom: 1px solid var(--line);
  }

  .split-section,
  .news-layout,
  .tech-grid,
  .contact-card,
  .detail-shell,
  .listing-shell,
  .detail-main {
    grid-template-columns: 1fr;
  }

  .detail-sidebar {
    position: static;
  }

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

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

  .split-section,
  .content-section,
  .product-section,
  .showroom-section,
  .tech-section,
  .contact-section {
    padding-top: 68px;
    padding-bottom: 68px;
  }
}

@media (max-width: 600px) {
  .hero,
  .hero-content {
    min-height: 520px;
  }

  .hero-content {
    width: min(100% - 32px, 1180px);
  }

  .hero-content p:not(.eyebrow) {
    font-size: 16px;
  }

  .hero-actions {
    width: 100%;
  }

  .button {
    width: 100%;
  }

  .proof-strip {
    width: min(100% - 24px, 1180px);
    grid-template-columns: 1fr;
    margin-top: -34px;
  }

  .proof-strip div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 20px;
  }

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

  .split-section,
  .content-section,
  .product-section,
  .showroom-section,
  .tech-section,
  .contact-section,
  .statement {
    padding-left: 18px;
    padding-right: 18px;
  }

  .image-panel::before {
    display: none;
  }

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

  .news-list a {
    display: block;
  }

  .news-list time {
    display: block;
    margin-top: 6px;
  }

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

  .contact-card {
    padding: 24px;
  }

  .contact-list div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .site-footer {
    display: block;
    text-align: center;
  }

  .site-footer p + p {
    margin-top: 6px;
  }

  .detail-shell {
    width: min(100% - 24px, 1180px);
    margin-bottom: 58px;
  }

  .listing-shell,
  .article-shell {
    width: min(100% - 24px, 1180px);
    margin-bottom: 58px;
  }

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

  .detail-content {
    padding: 24px;
  }

  .detail-pager {
    display: block;
  }

  .detail-pager a {
    display: block;
    margin-top: 10px;
  }
}