:root {
  --ink: #111515;
  --paper: #f5f5f7;
  --white: #ffffff;
  --muted: #6e7472;
  --line: rgba(20, 28, 26, 0.1);
  --green: #08a84f;
  --cyan: #10b6d8;
  --lime: #8edb60;
  --dark: #050807;
  --dark-2: #101715;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
}

body.modal-open {
  overflow: hidden;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  min-height: 56px;
  padding: 8px clamp(18px, 5vw, 72px);
  background: rgba(245, 245, 247, 0.72);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  backdrop-filter: saturate(180%) blur(20px);
}

.brand,
.nav,
.phone-link {
  display: inline-flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-size: 14px;
  font-weight: 800;
}

.brand img {
  width: 36px;
  height: 28px;
  object-fit: contain;
}

.nav {
  gap: 28px;
  color: rgba(17, 21, 21, 0.78);
  font-size: 13px;
  font-weight: 700;
}

.phone-link {
  justify-self: end;
  min-height: 32px;
  padding: 0 13px;
  color: var(--white);
  background: var(--ink);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.hero {
  min-height: calc(100svh - 56px);
  display: grid;
  grid-template-columns: minmax(360px, 0.86fr) minmax(500px, 1.14fr);
  align-items: center;
  gap: clamp(22px, 4vw, 58px);
  padding: clamp(44px, 6.5vw, 88px) clamp(22px, 6vw, 96px) clamp(36px, 6vw, 78px);
  overflow: hidden;
  background:
    radial-gradient(circle at 74% 28%, rgba(8, 168, 79, 0.18), transparent 34%),
    radial-gradient(circle at 90% 86%, rgba(16, 182, 216, 0.14), transparent 28%),
    linear-gradient(180deg, #fbfbfd 0%, #f0f3f2 100%);
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero-position {
  width: fit-content;
  max-width: 100%;
  margin: 0 0 18px;
  padding: 10px 16px;
  color: #06344a;
  font-size: clamp(16px, 1.7vw, 22px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 0;
  border: 1px solid rgba(0, 178, 238, 0.22);
  border-radius: 999px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(230, 250, 255, 0.62)),
    rgba(255, 255, 255, 0.66);
  box-shadow: 0 16px 46px rgba(0, 102, 145, 0.1);
  white-space: nowrap;
}

.hero h1 {
  margin: 0;
  font-size: clamp(54px, 5.65vw, 92px);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero h1 span {
  display: block;
  white-space: nowrap;
}

.hero-copy p:not(.eyebrow, .hero-position) {
  max-width: 620px;
  margin: 24px 0 34px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 26px);
  line-height: 1.55;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 800;
}

.primary-action {
  color: var(--white);
  background: linear-gradient(135deg, var(--green), #05c875);
  box-shadow: 0 16px 38px rgba(8, 168, 79, 0.25);
}

.secondary-action {
  color: var(--ink);
  border: 1px solid rgba(17, 21, 21, 0.18);
  background: rgba(255, 255, 255, 0.72);
}

.hero-device {
  position: relative;
  justify-self: stretch;
  min-height: min(660px, calc(100svh - 180px));
  border-radius: 36px;
  overflow: hidden;
  background: #0c1512;
  box-shadow: 0 44px 100px rgba(17, 21, 21, 0.2);
}

.hero-device::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.16), transparent 28%),
    linear-gradient(90deg, rgba(5, 8, 7, 0.64), transparent 58%);
  pointer-events: none;
}

.hero-device img {
  width: 100%;
  height: 100%;
  min-height: min(660px, calc(100svh - 180px));
  object-fit: cover;
  object-position: center;
}

.signal-strip {
  width: min(1120px, calc(100% - 36px));
  margin: -36px auto 0;
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.74);
  box-shadow: 0 24px 70px rgba(17, 21, 21, 0.1);
  backdrop-filter: blur(22px);
}

.signal-strip div {
  min-height: 122px;
  padding: 28px;
  border-right: 1px solid var(--line);
}

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

.signal-strip strong {
  display: block;
  color: var(--ink);
  font-size: clamp(34px, 4vw, 56px);
  line-height: 1;
  white-space: nowrap;
}

.signal-strip span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

section {
  padding: clamp(72px, 9vw, 132px) clamp(20px, 5vw, 80px);
}

.section-intro {
  width: min(760px, 100%);
  margin-bottom: 42px;
}

.section-intro.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-intro h2,
.case-copy h2,
.contact h2 {
  margin: 0;
  font-size: clamp(36px, 5.4vw, 76px);
  line-height: 1.05;
  letter-spacing: 0;
}

.section-intro p:not(.eyebrow),
.case-copy p,
.contact p,
.showcase-copy p,
.feature-grid p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

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

.dark-showcase {
  position: relative;
  width: min(1180px, 100%);
  min-height: 640px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  align-items: end;
  gap: clamp(28px, 5vw, 64px);
  overflow: hidden;
  border-radius: 42px;
  padding: clamp(32px, 5vw, 64px);
  color: var(--white);
  background:
    radial-gradient(circle at 78% 16%, rgba(8, 168, 79, 0.38), transparent 30%),
    radial-gradient(circle at 14% 86%, rgba(16, 182, 216, 0.22), transparent 32%),
    linear-gradient(145deg, #07100d, #15231f);
  box-shadow: 0 40px 110px rgba(5, 8, 7, 0.24);
}

.showcase-copy {
  align-self: center;
  max-width: 440px;
}

.showcase-copy span {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--lime);
  font-size: 14px;
  font-weight: 900;
}

.showcase-copy h3 {
  margin: 0;
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

.showcase-copy p {
  color: rgba(255, 255, 255, 0.72);
}

.dark-showcase img {
  width: 100%;
  min-height: 440px;
  object-fit: cover;
  border-radius: 28px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.32);
}

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

.business .section-intro {
  width: min(1180px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.feature-grid {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-grid article {
  min-height: 300px;
  padding: 28px;
  border-radius: 28px;
  background: var(--paper);
}

.feature-grid span {
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

.feature-grid h3 {
  margin: 38px 0 16px;
  font-size: 26px;
}

.feature-grid p {
  margin: 0;
}

.data-story {
  background:
    radial-gradient(circle at 18% 18%, rgba(8, 168, 79, 0.12), transparent 22%),
    #fafafa;
}

.data-panels {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.data-panels figure {
  margin: 0;
  overflow: hidden;
  border-radius: 34px;
  background: var(--white);
  box-shadow: 0 20px 70px rgba(17, 21, 21, 0.08);
}

.data-panels img {
  width: 100%;
  aspect-ratio: 1.14 / 1;
  object-fit: contain;
  padding: 18px 18px 0;
  background: var(--white);
}

.data-panels figcaption {
  padding: 14px 28px 28px;
  color: var(--muted);
  font-weight: 800;
  text-align: center;
}

.cases {
  display: grid;
  grid-template-columns: minmax(280px, 0.48fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(34px, 6vw, 90px);
  background: var(--dark);
  color: var(--white);
}

.case-copy {
  max-width: 520px;
  justify-self: end;
}

.case-copy h2 span {
  display: block;
}

.products {
  display: grid;
  grid-template-columns: minmax(280px, 0.48fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(34px, 6vw, 90px);
  background:
    radial-gradient(circle at 78% 14%, rgba(0, 178, 238, 0.11), transparent 28%),
    var(--paper);
}

.product-copy {
  max-width: 520px;
  justify-self: end;
}

.product-copy h2 {
  margin: 0;
  font-size: clamp(40px, 5.4vw, 76px);
  line-height: 1.05;
  letter-spacing: 0;
}

.product-copy p:not(.eyebrow) {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.case-copy p {
  color: rgba(255, 255, 255, 0.68);
}

.case-picker,
.product-picker {
  width: min(720px, 100%);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  justify-self: start;
}

.case-picker button,
.product-picker button {
  min-height: 82px;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  text-align: left;
  font: inherit;
  font-size: clamp(18px, 1.8vw, 25px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 22px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04)),
    rgba(255, 255, 255, 0.05);
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.product-picker button {
  justify-content: center;
}

.case-picker button {
  color: var(--white);
}

.product-picker button {
  color: var(--ink);
  border-color: rgba(17, 21, 21, 0.08);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.64)),
    rgba(255, 255, 255, 0.82);
  box-shadow: 0 16px 44px rgba(17, 21, 21, 0.06);
}

.product-picker button[data-site="80/120/160/180/200/240KW直流充电桩"] {
  gap: 3px;
  font-size: clamp(14px, 1.22vw, 18px);
}

.product-picker button span {
  display: block;
  width: 100%;
}

.product-picker button span:first-child {
  white-space: nowrap;
}

.product-picker button:has(span) {
  flex-direction: column;
  align-items: flex-start;
}

.case-picker button:hover {
  transform: translateY(-2px);
  border-color: rgba(8, 168, 79, 0.8);
  background:
    linear-gradient(135deg, rgba(8, 168, 79, 0.32), rgba(16, 182, 216, 0.1)),
    rgba(255, 255, 255, 0.08);
}

.product-picker button:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 178, 238, 0.45);
  background:
    linear-gradient(135deg, rgba(0, 178, 238, 0.16), rgba(255, 255, 255, 0.9)),
    rgba(255, 255, 255, 0.92);
}

.site-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.site-modal[aria-hidden="false"] {
  display: flex;
}

.site-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(14px);
}

.site-modal__dialog {
  position: relative;
  width: min(980px, 100%);
  max-height: calc(100vh - 48px);
  overflow: hidden;
  padding: 20px;
  border-radius: 30px;
  color: var(--white);
  background: rgba(10, 15, 13, 0.94);
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.45);
}

.site-modal__dialog h3 {
  max-width: calc(100% - 78px);
  margin: 0 78px 16px 4px;
  font-size: clamp(20px, 2.45vw, 32px);
  line-height: 1.2;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.site-modal__dialog img {
  width: 100%;
  max-height: calc(100vh - 160px);
  object-fit: contain;
  border-radius: 20px;
  background: var(--dark-2);
}

.site-modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
}

.coverage {
  width: min(1180px, 100%);
  margin: 0 auto;
}

.coverage img {
  width: 100%;
  border-radius: 34px;
  box-shadow: 0 24px 80px rgba(17, 21, 21, 0.11);
}

.insights {
  padding: 98px clamp(22px, 6vw, 96px);
  background: #ffffff;
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.insight-grid article {
  min-height: 286px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f7f9f8;
}

.insight-grid span,
.back-link {
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

.insight-grid h3 {
  margin: 18px 0 14px;
  font-size: 26px;
  line-height: 1.18;
}

.insight-grid p {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.insight-grid a {
  font-weight: 900;
}

.article-page {
  background: #ffffff;
}

.article-shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 72px 24px 96px;
}

.back-link {
  display: inline-block;
  margin-bottom: 26px;
}

.article-shell h1 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(42px, 5vw, 68px);
  line-height: 1.08;
  letter-spacing: 0;
}

.article-lead {
  margin: 24px 0 44px;
  color: #3f4745;
  font-size: 21px;
  line-height: 1.8;
}

.article-shell section {
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.article-shell h2 {
  margin: 0 0 16px;
  font-size: 30px;
  line-height: 1.25;
}

.article-shell p,
.article-shell li {
  color: #424a48;
  font-size: 17px;
  line-height: 1.86;
}

.article-shell table {
  width: 100%;
  margin-top: 18px;
  border-collapse: collapse;
  font-size: 15px;
}

.article-shell th,
.article-shell td {
  padding: 14px 16px;
  text-align: left;
  border: 1px solid var(--line);
}

.article-shell th {
  background: #eef5f1;
}

.article-shell pre {
  overflow-x: auto;
  padding: 18px;
  border-radius: 8px;
  background: #101715;
  color: #ffffff;
  line-height: 1.7;
}

.contact {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border-radius: 38px;
  color: var(--white);
  background:
    radial-gradient(circle at 88% 22%, rgba(8, 168, 79, 0.36), transparent 28%),
    linear-gradient(135deg, #07100d, #17211e);
}

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

.contact .secondary-action {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
}

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

  .nav {
    display: none;
  }

  .hero,
  .dark-showcase,
  .feature-grid,
  .data-panels,
  .products,
  .cases {
    grid-template-columns: 1fr;
  }

  .hero {
    align-items: start;
    gap: 34px;
    min-height: auto;
    padding-top: 52px;
  }

  .hero-copy {
    max-width: 720px;
  }

  .hero h1 {
    font-size: clamp(48px, 9vw, 76px);
  }

  .hero-device {
    min-height: 460px;
  }

  .hero-device img {
    min-height: 460px;
  }

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

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

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

  .feature-grid article {
    min-height: auto;
  }

  .case-copy {
    justify-self: start;
  }

  .product-copy {
    justify-self: start;
  }

  .case-picker,
  .product-picker,
  .insight-grid {
    justify-self: stretch;
    width: 100%;
  }

  .contact {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 620px) {
  .site-header {
    padding: 8px 14px;
  }

  .brand span {
    display: none;
  }

  .phone-link {
    min-height: 30px;
    font-size: 12px;
  }

  .hero {
    padding: 36px 18px 28px;
    min-height: auto;
    gap: 24px;
  }

  .eyebrow {
    margin-bottom: 12px;
    font-size: 12px;
  }

  .hero-position {
    width: 100%;
    max-width: 312px;
    padding: 8px 13px;
    font-size: 15px;
    white-space: normal;
    text-align: center;
  }

  .hero h1 {
    font-size: clamp(42px, 12vw, 52px);
    line-height: 1.06;
  }

  .hero h1 span {
    white-space: normal;
  }

  .hero-copy p:not(.eyebrow, .hero-position) {
    max-width: 330px;
    margin: 18px 0 24px;
    font-size: 17px;
    line-height: 1.62;
  }

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

  .primary-action,
  .secondary-action {
    width: 100%;
  }

  .hero-device {
    min-height: clamp(300px, 48svh, 430px);
    border-radius: 28px;
  }

  .hero-device img {
    min-height: clamp(300px, 48svh, 430px);
    object-position: 58% center;
  }

  .signal-strip {
    width: calc(100% - 24px);
    margin-top: 14px;
    grid-template-columns: 1fr;
    border-radius: 24px;
  }

  .signal-strip div {
    min-height: 96px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .signal-strip strong {
    font-size: 36px;
  }

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

  section {
    padding-left: 18px;
    padding-right: 18px;
  }

  .section-intro.center {
    text-align: left;
  }

  .section-intro h2,
  .case-copy h2,
  .contact h2 {
    font-size: 36px;
  }

  .dark-showcase {
    min-height: auto;
    border-radius: 28px;
    padding: 24px;
  }

  .showcase-copy h3 {
    font-size: 34px;
  }

  .dark-showcase img {
    min-height: 300px;
    border-radius: 22px;
  }

  .data-panels figure,
  .coverage img,
  .contact {
    border-radius: 26px;
  }

  .case-picker {
    grid-template-columns: 1fr;
  }

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

  .case-picker button,
  .product-picker button {
    min-height: 66px;
    padding: 16px 18px;
    font-size: 20px;
    line-height: 1.18;
    border-radius: 18px;
  }

  .product-picker button[data-site="80/120/160/180/200/240KW直流充电桩"] {
    font-size: 16px;
  }

  .product-picker button span:first-child {
    white-space: normal;
  }

  .contact {
    width: calc(100% - 24px);
    margin-bottom: 30px;
  }

  .insights {
    padding: 72px 18px;
  }

  .insight-grid article {
    min-height: auto;
    padding: 22px;
  }

  .article-shell {
    padding: 46px 18px 72px;
  }

  .article-shell h1 {
    font-size: clamp(36px, 10vw, 48px);
  }

  .article-lead {
    font-size: 18px;
  }

  .article-shell table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .site-modal {
    padding: 14px;
  }

  .site-modal__dialog {
    padding: 14px;
    border-radius: 22px;
  }

  .site-modal__dialog h3 {
    max-width: calc(100% - 52px);
    margin-right: 52px;
    font-size: 20px;
    line-height: 1.18;
  }

  .site-modal__dialog img {
    max-height: calc(100svh - 126px);
    border-radius: 16px;
  }

}

@media (max-width: 420px) {
  .site-header {
    min-height: 48px;
  }

  .brand img {
    width: 32px;
    height: 25px;
  }

  .phone-link {
    padding: 0 11px;
  }

  .hero {
    padding-top: 30px;
  }

  .hero h1 {
    font-size: clamp(38px, 11.2vw, 46px);
  }

  .signal-strip strong {
    font-size: 34px;
  }

  .case-picker button,
  .product-picker button {
    font-size: 19px;
  }
}

@media (min-width: 1200px) and (min-aspect-ratio: 16 / 10) {
  .hero {
    padding-top: clamp(34px, 4.4vw, 70px);
    padding-bottom: clamp(30px, 4vw, 64px);
  }

  .hero h1 {
    font-size: clamp(58px, 5.35vw, 90px);
  }

  .hero-device,
  .hero-device img {
    min-height: min(620px, calc(100svh - 160px));
  }
}