:root {
  --navy: #224092;
  --navy-deep: #162a62;
  --red: #e52721;
  --red-deep: #c81e19;
  --gold: #ffd500;
  --ink: #1b2430;
  --muted: #5c6774;
  --fade: #8a93a0;
  --line: #e3e8ef;
  --paper: #f5f7fb;
  --chip: #eef1f6;
  --white: #ffffff;
  --footer: #121a2b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
h1, h2, h3, p, ul { margin: 0; }
ul { padding: 0; list-style: none; }

.container {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ---------- header: logo + nav + phone on one bar ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--white);
  box-shadow: 0 2px 8px rgba(22, 42, 98, 0.08);
}
.site-header .container { position: relative; }
.header-bar {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  background: transparent;
}
.brand img { height: 42px; width: auto; }
.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 36px;
  min-width: 0;
}
.main-nav a {
  color: var(--ink);
  font-size: 15px;
  font-weight: 400;
  line-height: 1;
  padding: 10px 0;
  position: relative;
  white-space: nowrap;
  background: transparent;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.3s ease;
}
.main-nav a:hover {
  color: var(--navy);
}
.main-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left center;
}
.main-nav a[aria-current="page"] {
  color: var(--navy);
  font-weight: 700;
  background: transparent;
}
.main-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left center;
}
.hotline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--navy);
  font-weight: 700;
  font-size: 20px;
  white-space: nowrap;
  flex-shrink: 0;
}
.hotline small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--fade);
  line-height: 1.2;
}
.hotline-icon {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.hotline-icon svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--red);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.nav-toggle {
  display: none;
  margin-left: auto;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 2px;
  padding: 0;
}
.nav-toggle-lines,
.nav-toggle-lines::before,
.nav-toggle-lines::after {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--navy);
  position: relative;
  margin: 0 auto;
}
.nav-toggle-lines::before,
.nav-toggle-lines::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle-lines::before { top: -6px; }
.nav-toggle-lines::after { top: 6px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  height: 46px;
  padding: 0 22px;
  border-radius: 2px;
  font-size: 15px;
  font-weight: 700;
  border: 0;
}
.btn-navy { background: var(--navy); color: var(--white); }
.btn-navy:hover { background: var(--navy-deep); }
.btn-red { background: var(--red); color: var(--white); }
.btn-red:hover { background: var(--red-deep); }
.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.7);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); }
.btn-outline {
  background: var(--white);
  color: var(--navy);
  border: 1px solid var(--navy);
}
.btn-outline:hover {
  background: var(--navy);
  color: var(--white);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  height: 560px;
  overflow: hidden;
  background: var(--navy-deep);
}
.hero-slides,
.hero-slide { position: absolute; inset: 0; }
.hero-slide {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.9s ease;
}
.hero-slide.is-active { opacity: 1; pointer-events: auto; }
.hero-slide img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16, 28, 64, 0.5) 0%, rgba(22, 42, 98, 0.72) 100%);
}
.hero-copy {
  position: relative;
  z-index: 1;
  width: min(860px, calc(100% - 40px));
  text-align: center;
  color: var(--white);
}
.eyebrow {
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
}
.hero h1 {
  margin-top: 14px;
  font-size: 44px;
  font-weight: 700;
  line-height: 1.25;
}
.hero .lead {
  margin: 16px auto 0;
  max-width: 680px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
}
.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}
.hero-stepper {
  position: absolute;
  left: 50%;
  bottom: 22px;
  z-index: 2;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}
.hero-stepper button {
  position: relative;
  width: 36px;
  height: 4px;
  padding: 0;
  border: 0;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
}
.hero-stepper button::before {
  content: "";
  position: absolute;
  inset: -12px 0;
}
.hero-stepper button.is-active { background: var(--gold); }

/* ---------- hot bar ---------- */
.hot-bar {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.hot-bar-inner {
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.hot-label {
  flex-shrink: 0;
  color: var(--navy);
  font-weight: 700;
  font-size: 14px;
  padding-left: 10px;
  border-left: 3px solid var(--gold);
}
.hot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  flex: 1;
  min-width: 0;
}
.hot-links a {
  font-size: 14px;
  color: var(--muted);
}
.hot-links a:hover { color: var(--navy); }
.hot-search {
  display: flex;
  flex-shrink: 0;
  width: 352px;
  height: 36px;
  border: 1px solid var(--line);
  background: var(--white);
}
.hot-search input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: none;
  padding: 0 12px;
  font-size: 13px;
  color: var(--ink);
  background: transparent;
  font-family: inherit;
}
.hot-search input::placeholder { color: var(--fade); }
.hot-search button {
  width: 36px;
  border: 0;
  background: var(--navy);
  color: var(--gold);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.hot-search button svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

/* ---------- section titles ---------- */
.section { padding: 80px 0; }
.section-title {
  position: relative;
  text-align: center;
  margin-bottom: 36px;
}
.section-title .watermark {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -58%);
  font-size: 72px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(34, 64, 146, 0.06);
  white-space: nowrap;
  pointer-events: none;
  z-index: 0;
}
.section-title h2,
.section-title .desc {
  position: relative;
  z-index: 1;
}
.section-title h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}
.section-title h2 em {
  font-style: normal;
  color: var(--red);
}
.section-title .desc {
  margin-top: 10px;
  color: var(--muted);
  font-size: 15px;
}
.section-title::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  margin: 16px auto 0;
  background: var(--gold);
  position: relative;
  z-index: 1;
}
.section-more {
  display: flex;
  justify-content: center;
  margin-top: 28px;
}
.tag {
  color: var(--navy);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.tag::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 6px;
  background: var(--gold);
  vertical-align: 1px;
}

/* ---------- products ---------- */
.products { background: var(--white); }
.need-bar {
  display: grid;
  grid-template-columns: 88px 1fr 150px;
  height: 80px;
  border: 1px solid var(--line);
  margin-bottom: 28px;
  background: var(--white);
}
.need-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--navy);
  color: var(--white);
  font-weight: 700;
  font-size: 15px;
}
.need-label svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}
.need-grid {
  display: grid;
  list-style: none;
  margin: 0;
  padding: 0;
  height: 80px;
  overflow: hidden;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-template-rows: repeat(2, 40px);
}
.need-grid button {
  width: 100%;
  height: 40px;
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--chip);
  color: var(--ink);
  font-size: 12px;
  cursor: pointer;
  text-align: center;
  padding: 0 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.need-grid li:nth-child(6n) button { border-right: 0; }
.need-grid li:nth-child(n+7) button { border-bottom: 0; }
.need-grid button:hover,
.need-grid button.is-active {
  background: var(--navy);
  color: var(--white);
}
.need-grid button.is-active {
  box-shadow: inset 0 -3px 0 var(--gold);
}
.need-cta {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  padding: 0 14px;
  min-width: 0;
  background: var(--navy);
  color: var(--white);
  border-top: 3px solid var(--gold);
}
.need-cta strong { font-size: 16px; }
.need-cta span { font-size: 12px; color: rgba(255, 255, 255, 0.8); }

.product-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 20px;
  align-items: stretch;
}
.product-side {
  border: 1px solid var(--line);
  background: var(--white);
}
.side-head {
  background: var(--navy);
  color: var(--white);
  padding: 16px 18px;
}
.side-head strong { display: block; font-size: 18px; }
.side-head span {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.7);
}
.side-list button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  text-align: left;
  padding: 12px 16px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  font-size: 14px;
  cursor: pointer;
}
.side-list button::before {
  content: "";
  width: 0;
  height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 5px solid var(--fade);
}
.side-list button:hover,
.side-list button.is-active {
  color: var(--navy);
  background: var(--paper);
}
.side-list button.is-active {
  box-shadow: inset 3px 0 0 var(--gold);
}
.side-list button.is-active::before { border-left-color: var(--gold); }
.side-phone {
  display: block;
  padding: 18px 16px;
  background: var(--navy);
  color: var(--white);
  text-align: center;
}
.side-phone span {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
}
.side-phone strong {
  display: block;
  margin-top: 6px;
  font-size: 20px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 18px;
  height: 100%;
}
.product-card.is-hidden { display: none; }
.product-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
  transition: box-shadow 0.4s ease;
}
.product-photo {
  background: var(--chip);
  flex: 1 1 auto;
  height: auto;
  min-height: 310px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 50px;
}
.product-photo img {
  max-height: 100%;
  max-width: 100%;
  width: auto;
  object-fit: contain;
}
.product-card h3 {
  margin-top: 0;
  flex: 0 0 52px;
  height: 52px;
  line-height: 52px;
  text-align: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: background 0.4s ease, color 0.4s ease, padding 0.4s ease, text-align 0.4s ease;
}
.product-hover {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: 0;
  overflow: hidden;
  border: 6px solid var(--navy);
  box-shadow: inset 0 0 0 2px var(--gold);
  transition: opacity 0.4s ease;
}
.product-hover-logo {
  position: absolute;
  top: 10px;
  left: 10px;
  height: 22px;
  width: auto;
  max-width: 38%;
  object-fit: contain;
}
.product-hover-tag {
  position: absolute;
  left: 0;
  bottom: 52px;
  background: var(--gold);
  color: var(--navy);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  padding: 8px 12px;
}
.product-hover-mark {
  position: absolute;
  right: 0;
  bottom: 0;
  z-index: 2;
  left: auto;
  width: 92px;
  height: 70px;
  min-width: 0;
  max-width: 92px;
  overflow: hidden;
  background: var(--navy);
  color: var(--white);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%, 0 48%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-end;
  padding: 0 8px 8px 28px;
  box-sizing: border-box;
}
.product-hover-mark small {
  display: block;
  max-width: 100%;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--gold);
  white-space: nowrap;
}
.product-hover-mark b {
  display: block;
  max-width: 100%;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0;
  white-space: nowrap;
}
.product-card:hover {
  box-shadow: 0 0 10px 3px #d9d9d9;
}
.product-card:hover .product-hover {
  opacity: 1;
}
.product-card:hover h3 {
  background: var(--navy);
  color: var(--white);
  text-align: left;
  padding-left: 16px;
  padding-right: 100px;
}
@media (prefers-reduced-motion: reduce) {
  .product-card,
  .product-card h3,
  .product-hover { transition: none; }
}

/* ---------- advantages (horizontal accordion) ---------- */
.advantages {
  background: var(--paper);
  padding-bottom: 0;
}
.advantages .container { margin-bottom: 28px; }
.advantage-strip {
  display: flex;
  /* 四等分时单格约 3:2，贴近实图比例，cover 铺满且裁切最少 */
  height: clamp(240px, 16.67vw, 340px);
  overflow: hidden;
}
.advantage-strip article {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  overflow: hidden;
  cursor: pointer;
  transition: flex 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}
.advantage-strip:hover article { flex: 0.72 1 0; }
.advantage-strip article:hover { flex: 1.85 1 0; }
.advantage-strip img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
}
.advantage-mask {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 28px 22px;
  color: var(--white);
  background: rgba(0, 0, 0, 0.3);
}
.advantage-mask svg {
  width: 42px;
  height: 42px;
  fill: none;
  stroke: var(--gold);
  stroke-width: 1.4;
  margin-bottom: 14px;
  transition: transform 0.45s ease, stroke 0.35s ease;
}
.advantage-strip article:hover .advantage-mask svg {
  transform: translateY(-4px) scale(1.08);
  stroke: var(--gold);
}
.advantage-mask h3 {
  font-size: 20px;
  font-weight: 700;
  white-space: nowrap;
  transition: color 0.35s ease;
}
.advantage-strip article:hover .advantage-mask h3 { color: var(--gold); }
.advantage-mask h3::after {
  content: "";
  display: block;
  width: 28px;
  height: 2px;
  margin: 10px auto 0;
  background: var(--gold);
  transition: width 0.4s ease, background 0.35s ease;
}
.advantage-strip article:hover .advantage-mask h3::after {
  width: 48px;
  background: var(--red);
}
.advantage-mask p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  max-width: 260px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.45s ease, opacity 0.4s ease 0.08s, margin 0.35s ease;
}
.advantage-strip article:hover .advantage-mask p {
  max-height: 120px;
  opacity: 1;
  margin-top: 14px;
}

@media (prefers-reduced-motion: reduce) {
  .advantage-strip article,
  .advantage-mask,
  .advantage-mask svg,
  .advantage-mask h3::after,
  .advantage-mask p {
    transition: none;
  }
}

/* ---------- feature row ---------- */
.feature-row {
  background: var(--white);
  padding: 42px 0;
  border-bottom: 1px solid var(--line);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.feature-item {
  display: flex;
  align-items: center;
  gap: 14px;
}
.feature-icon {
  position: relative;
  width: 56px;
  height: 56px;
  border: 1px solid var(--line);
  border-radius: 50%;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--white);
  transition: border-color 0.25s ease, background 0.25s ease;
}
.feature-icon svg {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 22px;
  height: 22px;
  margin: 0;
  transform: translate(-50%, -50%);
  fill: none;
  stroke: var(--navy);
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 0.25s ease;
}
.feature-item:hover .feature-icon {
  border-color: var(--gold);
  background: rgba(255, 213, 0, 0.12);
}
.feature-item:hover .feature-icon svg { stroke: var(--navy); }
.feature-item strong {
  display: block;
  font-size: 16px;
  color: var(--ink);
}
.feature-item span {
  display: block;
  margin-top: 2px;
  font-size: 13px;
  color: var(--fade);
}

/* ---------- cases ---------- */
.cases { background: var(--paper); }
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.case-card {
  background: var(--white);
  border: 1px solid var(--line);
  overflow: hidden;
}
.case-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.case-body {
  position: relative;
  padding: 16px 18px 18px;
  overflow: hidden;
}
.case-body::before {
  content: "";
  position: absolute;
  inset: 0;
  background: #f5f7fb;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
.case-card:hover .case-body::before {
  transform: scaleX(1);
}
.case-body > * { position: relative; z-index: 1; }
.case-body h3 {
  margin-top: 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

/* ---------- company ---------- */
.company { background: var(--white); }
.company-panel {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 0;
  border: 1px solid var(--line);
  overflow: hidden;
  margin-bottom: 18px;
}
.company-photo {
  min-height: 360px;
  background: var(--paper);
}
.company-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.company-info {
  background: var(--paper);
  padding: 28px 28px 30px;
  display: flex;
  flex-direction: column;
}
.company-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-bottom: 18px;
}
.company-stats > div {
  text-align: left;
  padding-right: 12px;
}
.company-stats > div + div {
  border-left: 1px solid var(--line);
  padding-left: 16px;
}
.company-stats strong {
  display: block;
  color: var(--navy);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.1;
}
.company-stats strong::after {
  content: "";
  display: block;
  width: 24px;
  height: 3px;
  margin-top: 8px;
  background: var(--gold);
}
.company-stats span {
  display: block;
  margin-top: 6px;
  color: var(--fade);
  font-size: 13px;
}
.company-lead {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
  flex: 1;
}
.company-icons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 22px 0 20px;
}
.company-icons a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  font-size: 13px;
  color: var(--ink);
  padding: 8px 4px;
}
.company-icons a:hover { color: var(--navy); }
.company-icons a:hover .ci-ico {
  border-color: var(--gold);
  background: rgba(255, 213, 0, 0.12);
}
.ci-ico {
  position: relative;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--white);
  transition: border-color 0.25s ease, background 0.25s ease;
}
.ci-ico svg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  fill: none;
  stroke: var(--navy);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.company-info .btn { align-self: flex-start; }
.company-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.company-gallery figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--paper);
}
.company-gallery img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
}
.company-gallery figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 12px;
  background: linear-gradient(180deg, transparent, rgba(18, 26, 43, 0.72));
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
}
.company-gallery figcaption::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 12px;
  margin-right: 8px;
  background: var(--gold);
  vertical-align: -1px;
}

/* ---------- news ---------- */
.news { background: var(--paper); }
.news-list {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 0 22px;
}
.news-list article {
  display: grid;
  grid-template-columns: 128px 88px minmax(0, 1fr);
  gap: 8px 22px;
  align-items: baseline;
  padding: 22px 12px;
  margin: 0 -12px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: background-color 0.25s ease;
}
.news-list article:last-child { border-bottom: 0; }
.news-list article:hover { background-color: #f5f7fb; }
.news-list time {
  color: var(--navy);
  font-weight: 700;
  border-left: 3px solid var(--gold);
  padding-left: 10px;
}
.news-copy { grid-column: 3; grid-row: 1; }
.news-copy h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  transition: color 0.25s ease;
}
.news-list article:hover .news-copy h3 { color: var(--navy); }
.news-copy p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

/* ---------- footer ---------- */
.footer {
  background: var(--footer);
  color: rgba(255, 255, 255, 0.82);
  padding-top: 48px;
  border-top: 3px solid var(--gold);
}
.footer h2::after {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  margin-top: 8px;
  background: var(--gold);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 1.2fr;
  gap: 32px;
}
.footer-logo {
  height: 40px;
  width: auto;
  background: transparent;
  margin-bottom: 12px;
}
.footer h2 {
  color: var(--white);
  font-size: 16px;
  margin-bottom: 10px;
}
.footer a:hover { color: var(--white); }
.footer-grid p + p { margin-top: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
  padding: 16px 0 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
}

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .main-nav { gap: 22px; }
  .need-bar { grid-template-columns: 88px 1fr; height: auto; }
  .need-cta { grid-column: 1 / -1; flex-direction: row; align-items: center; gap: 16px; padding: 12px 16px; }
  .need-grid { height: auto; overflow: visible; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .hot-search { width: 288px; }
}

@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .hotline { display: none; }
  .main-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 72px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    padding: 8px 20px 16px;
  }
  .site-header.is-open .main-nav { display: flex; }
  .main-nav a {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }
  .main-nav a[aria-current="page"]::after { display: none; }
  .product-layout,
  .company-panel,
  .footer-grid,
  .feature-grid,
  .case-grid { grid-template-columns: 1fr; }
  .company-photo { min-height: 260px; }
  .company-gallery { grid-template-columns: repeat(2, 1fr); }
  .company-icons { grid-template-columns: repeat(2, 1fr); }
  .advantage-strip {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    height: auto;
  }
  .advantage-strip:hover article,
  .advantage-strip article,
  .advantage-strip article:hover { flex: none; }
  .advantage-strip article {
    min-height: 0;
    aspect-ratio: 3 / 2;
  }
  .advantage-mask p {
    max-height: 120px;
    opacity: 1;
    margin-top: 10px;
  }
  .advantage-strip article:hover .advantage-mask h3 { color: var(--white); }
  .need-bar { height: auto; }
  .need-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); grid-template-rows: none; height: auto; overflow: visible; }
  .product-hover { display: none; }
  .product-card:hover h3 { padding-right: 16px; }
  .need-grid li:nth-child(6n) button { border-right: 1px solid var(--line); }
  .need-grid li:nth-child(4n) button { border-right: 0; }
  .need-grid li:nth-child(n+7) button { border-bottom: 1px solid var(--line); }
  .hot-bar-inner { flex-wrap: wrap; }
  .hot-search { width: 100%; }
  .hero { height: 480px; }
  .news-list article { grid-template-columns: auto 1fr; }
  .news-copy { grid-column: 1 / -1; grid-row: auto; }
  .section-title .watermark { font-size: 48px; }
  .hero h1 { font-size: 34px; }
}

@media (max-width: 640px) {
  .container { width: min(1200px, calc(100% - 28px)); }
  .hero { height: 420px; }
  .hero h1 { font-size: 28px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .section { padding: 52px 0; }
  .section-title h2 { font-size: 26px; }
  .need-bar { grid-template-columns: 1fr; height: auto; }
  .need-label { min-height: 56px; flex-direction: row; }
  .need-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); height: auto; overflow: visible; }
  .need-grid li:nth-child(4n) button { border-right: 1px solid var(--line); }
  .need-grid li:nth-child(3n) button { border-right: 0; }
  .product-grid { grid-template-columns: 1fr; }
  .advantage-strip { grid-template-columns: 1fr; }
  .company-stats { grid-template-columns: 1fr; }
  .company-stats > div + div {
    border-left: 0;
    padding-left: 0;
    padding-top: 12px;
    border-top: 1px solid var(--line);
    margin-top: 10px;
  }
  .company-gallery { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; }
}