*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --dark: #1A3C34;
  --dark-deep: #122A25;
  --darker: #0D1F1B;
  --accent: #C77A2C;
  --accent-dark: #B06A1E;
  --bg: #F7F6F2;
  --text: #2A2A2A;
  --text-light: #6B6B6B;
  --border: #DDD9D0;
  --white: #FFFFFF;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
  --sans: "HarmonyOS Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max: 1180px;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; }

/* ================= 顶部导航 ================= */
.site-nav {
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(18, 42, 37, 0.96);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.site-nav__inner {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav__logo {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.site-nav__logo em {
  font-style: normal;
  font-weight: 400;
  color: var(--accent);
}

.site-nav__menu {
  display: flex;
  align-items: center;
  gap: 34px;
}

.site-nav__menu a {
  position: relative;
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.72);
  transition: color 0.25s ease;
}

.site-nav__menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.site-nav__menu a:hover { color: var(--white); }
.site-nav__menu a:hover::after { width: 100%; }

.site-nav__menu a.is-active { color: var(--white); }
.site-nav__menu a.is-active::after { width: 100%; }

.site-nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.site-nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.site-nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.site-nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ================= 首屏 ================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--dark-deep);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
  filter: saturate(0.55) brightness(0.55);
}

.hero__mask {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(18,42,37,0.94) 0%, rgba(18,42,37,0.62) 52%, rgba(18,42,37,0.9) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 132px 24px 96px;
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(1.85rem, 4.4vw, 3.1rem);
  font-weight: 700;
  line-height: 1.36;
  letter-spacing: 0.05em;
  color: var(--white);
  margin-bottom: 22px;
}

.hero__sub {
  max-width: 640px;
  font-size: clamp(0.92rem, 1.5vw, 1.08rem);
  font-weight: 300;
  line-height: 1.95;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 36px;
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.hero__tags span {
  display: inline-block;
  padding: 6px 18px;
  font-size: 0.78rem;
  letter-spacing: 0.07em;
  color: var(--accent);
  border: 1px solid rgba(199, 122, 44, 0.42);
}

.hero__cta {
  display: inline-block;
  padding: 14px 38px;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--white);
  background: var(--accent);
  transition: background 0.3s ease, transform 0.2s ease;
}

.hero__cta:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

.hero__brands {
  position: absolute;
  right: 24px;
  bottom: 56px;
  z-index: 2;
  display: flex;
  gap: 26px;
}

.hero__brands span {
  font-size: 0.68rem;
  font-weight: 300;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.3);
}

/* ================= 通用区块 ================= */
.section { padding: 100px 24px; }

.section__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section__label {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section__title {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.7vw, 2rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--dark);
  margin-bottom: 16px;
}

.section__desc {
  max-width: 580px;
  font-size: 0.94rem;
  font-weight: 300;
  line-height: 1.9;
  color: var(--text-light);
  margin-bottom: 56px;
}

.section--white { background: var(--white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section--dark { background: var(--dark); }
.section--dark .section__title { color: var(--white); }
.section--dark .section__desc { color: rgba(255,255,255,0.5); }

/* ================= 能力速览 ================= */
.stats {
  width: 100%;
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.stats__item {
  padding: 56px 18px;
  text-align: center;
  border-right: 1px solid var(--border);
}

.stats__item:last-child { border-right: none; }

.stats__num {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3.4vw, 2.7rem);
  font-weight: 700;
  line-height: 1;
  color: var(--dark);
  margin-bottom: 10px;
}

.stats__num em {
  font-style: normal;
  font-size: 0.46em;
  font-weight: 400;
  color: var(--accent);
  margin-left: 2px;
}

.stats__label {
  font-size: 0.8rem;
  line-height: 1.65;
  letter-spacing: 0.02em;
  color: var(--text-light);
}

/* ================= 产品矩阵 ================= */
.products__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product {
  display: block;
  background: var(--white);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 34px rgba(26, 60, 52, 0.1);
}

.product__img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}

.product__body { padding: 24px 20px 28px; }

.product__body h3 {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--dark);
  margin-bottom: 8px;
}

.product__body h3 a { transition: color 0.25s ease; }
.product__body h3 a:hover { color: var(--accent); }

.product__body p {
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--text-light);
}

.product__meta {
  display: inline-block;
  margin-top: 14px;
  padding-bottom: 2px;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  border-bottom: 1px solid rgba(199, 122, 44, 0.32);
}

/* ================= 设备与工艺 ================= */
.equipment {
  background: var(--dark);
}

.equipment .section__title { color: var(--white); }
.equipment .section__desc { color: rgba(255, 255, 255, 0.5); }

.equipment__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.equipment__list li {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.equipment__list li:first-child {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.equipment__idx {
  min-width: 28px;
  padding-top: 3px;
  font-family: var(--serif);
  font-size: 0.85rem;
  color: var(--accent);
}

.equipment__info h4 {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--white);
  margin-bottom: 5px;
}

.equipment__info p {
  font-size: 0.79rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.45);
}

.equipment__visual {
  position: sticky;
  top: 96px;
}

.equipment__visual img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* ================= 服务流程 ================= */
.process__steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
}

.process__steps::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: var(--border);
  z-index: 0;
}

.step {
  position: relative;
  z-index: 1;
  padding: 0 8px;
  text-align: center;
}

.step__dot {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  font-family: var(--serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--dark);
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 50%;
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.step:hover .step__dot {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

.step h4 {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 5px;
}

.step p {
  font-size: 0.72rem;
  line-height: 1.65;
  color: var(--text-light);
}

/* ================= 关于明泽 ================= */
.about {
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about__layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.about__img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border: 1px solid var(--border);
}

.about__text p {
  font-size: 0.94rem;
  line-height: 1.95;
  color: var(--text-light);
  margin-bottom: 20px;
}

.about__commit {
  margin-top: 28px;
  padding-left: 20px;
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.7;
  color: var(--dark);
  border-left: 3px solid var(--accent);
}

/* ================= 询价联系 ================= */
.contact { background: var(--dark-deep); }
.contact .section__title { color: var(--white); }
.contact .section__desc { color: rgba(255, 255, 255, 0.5); }

.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.field { margin-bottom: 20px; }

.field label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.76rem;
  letter-spacing: 0.07em;
  color: rgba(255, 255, 255, 0.5);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 16px;
  font-family: var(--sans);
  font-size: 0.9rem;
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color 0.25s ease;
}

.field input::placeholder,
.field textarea::placeholder { color: rgba(255, 255, 255, 0.28); }

.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--accent); }

.field select option { background: var(--dark-deep); color: var(--white); }

.field textarea {
  min-height: 104px;
  resize: vertical;
}

.form__submit {
  display: inline-block;
  padding: 14px 46px;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  color: var(--white);
  background: var(--accent);
  border: none;
  cursor: pointer;
  transition: background 0.3s ease;
}

.form__submit:hover { background: var(--accent-dark); }

.form__status {
  margin-top: 18px;
  padding: 12px 16px;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--white);
  background: rgba(199, 122, 44, 0.16);
  border: 1px solid rgba(199, 122, 44, 0.4);
}

.contact__info h3 {
  font-family: var(--serif);
  font-size: 1.12rem;
  letter-spacing: 0.04em;
  color: var(--white);
  margin-bottom: 28px;
}

.contact__item {
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.contact__item:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: none;
}

.contact__item dt {
  margin-bottom: 6px;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
}

.contact__item dd {
  font-size: 0.94rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.85);
}

.contact__item dd a {
  color: var(--accent);
  transition: opacity 0.25s ease;
}

.contact__item dd a:hover { opacity: 0.72; }

/* ================= 页脚 ================= */
.site-footer {
  width: 100%;
  padding: 40px 24px 44px;
  background: var(--darker);
  text-align: center;
}

.site-footer__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.site-footer p {
  font-size: 0.77rem;
  line-height: 2;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.3);
}

.site-footer a {
  color: rgba(255, 255, 255, 0.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  padding-bottom: 1px;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.site-footer a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.site-footer__mobile {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.site-footer__top {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.28);
  cursor: pointer;
  transition: color 0.25s ease;
}

.site-footer__top:hover { color: var(--white); }

/* ================= 移动端悬浮拨号 ================= */
.call-float {
  display: none;
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 900;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  font-size: 0.58rem;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: 0.04em;
  text-align: center;
  color: var(--white);
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 6px 22px rgba(199, 122, 44, 0.42);
}

/* ================= 内页首屏 ================= */
.page-hero {
  position: relative;
  padding: 156px 24px 84px;
  background:
    radial-gradient(1000px 480px at 88% 6%, rgba(199,122,44,0.16), transparent 55%),
    radial-gradient(880px 520px at 6% 100%, rgba(199,122,44,0.08), transparent 60%),
    var(--dark-deep);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.page-hero__inner { max-width: var(--max); margin: 0 auto; }

.page-hero__label {
  display: block;
  margin-bottom: 16px;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
}

.page-hero h1 {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.8vw, 2.6rem);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: 0.05em;
  color: var(--white);
  margin-bottom: 18px;
}

.page-hero__desc {
  max-width: 680px;
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.6);
}

.page-hero__crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 28px;
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.38);
}

.page-hero__crumbs a { color: rgba(255, 255, 255, 0.55); transition: color 0.25s ease; }
.page-hero__crumbs a:hover { color: var(--accent); }
.page-hero__crumbs .sep { color: rgba(255, 255, 255, 0.24); }
.page-hero__crumbs strong { font-weight: 400; color: var(--accent); }

/* ================= 底部行动号召 ================= */
.cta-band {
  background: linear-gradient(120deg, var(--accent), var(--accent-dark));
  padding: 76px 24px;
  text-align: center;
}

.cta-band__inner { max-width: var(--max); margin: 0 auto; }

.cta-band h2 {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.7vw, 1.9rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
  margin-bottom: 12px;
}

.cta-band p {
  max-width: 560px;
  margin: 0 auto 28px;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.84);
}

.cta-band__btn {
  display: inline-block;
  padding: 13px 40px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--dark);
  background: var(--white);
  transition: background 0.3s ease, transform 0.2s ease;
}

.cta-band__btn:hover { background: #F0EDE5; transform: translateY(-1px); }

/* ================= 功能卡片（设备/服务） ================= */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 28px 26px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(26, 60, 52, 0.08);
}

.feature__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.feature__idx {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
}

.feature h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--dark);
}

.feature p {
  font-size: 0.83rem;
  line-height: 1.75;
  color: var(--text-light);
}

.feature ul { margin-top: 14px; }
.feature ul li {
  position: relative;
  padding-left: 16px;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--text-light);
  margin-bottom: 6px;
}

.feature ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ================= 左右图文 ================= */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.split__img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border: 1px solid var(--border);
}

.split__text h3 {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
}

.split__text p {
  font-size: 0.92rem;
  line-height: 1.9;
  color: var(--text-light);
  margin-bottom: 16px;
}

.list-check li {
  position: relative;
  padding: 0 0 12px 26px;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text-light);
}

.list-check li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ================= 规格表格 ================= */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
}

.spec-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: var(--white);
}

.spec-table th,
.spec-table td {
  padding: 14px 18px;
  font-size: 0.85rem;
  line-height: 1.6;
  text-align: left;
  border: 1px solid var(--border);
}

.spec-table th {
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--white);
  background: var(--dark);
}

.spec-table td { color: var(--text-light); }
.spec-table td:first-child { color: var(--dark); font-weight: 500; }
.spec-table tr:nth-child(even) td { background: var(--bg); }

/* ================= 常见问题 ================= */
.faq__item {
  background: var(--white);
  border: 1px solid var(--border);
  margin-bottom: 12px;
}

.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 22px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.25s ease;
}

.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary:hover { color: var(--accent); }

.faq__item summary::after {
  content: "+";
  flex-shrink: 0;
  color: var(--accent);
  font-size: 1.3rem;
  font-weight: 400;
  line-height: 1;
}

.faq__item[open] summary::after { content: "−"; }
.faq__item[open] summary { border-bottom: 1px solid var(--border); }

.faq__body {
  padding: 18px 22px 22px;
  font-size: 0.87rem;
  line-height: 1.85;
  color: var(--text-light);
}

/* ================= 时间轴 ================= */
.timeline {
  position: relative;
  padding-left: 6px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--border);
}

.timeline__item {
  position: relative;
  padding: 0 0 30px 30px;
}

.timeline__item:last-child { padding-bottom: 0; }

.timeline__dot {
  position: absolute;
  left: -1px;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(199, 122, 44, 0.16);
}

.timeline__year {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
}

.timeline__item h4 {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--dark);
  margin: 4px 0 6px;
}

.timeline__item p {
  font-size: 0.87rem;
  line-height: 1.8;
  color: var(--text-light);
}

/* ================= 价值观 ================= */
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.value-card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 32px 26px;
  text-align: center;
}

.value-card__num {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 10px;
}

.value-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 10px;
}

.value-card p {
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--text-light);
}

/* ================= 信息卡片 ================= */
.info-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 24px 26px;
  background: var(--white);
  border: 1px solid var(--border);
}

.info-card__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-family: var(--serif);
  font-weight: 700;
  color: var(--white);
  background: var(--accent);
  border-radius: 50%;
}

.info-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}

.info-card p {
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--text-light);
}

.info-card a {
  color: var(--accent);
  transition: opacity 0.25s ease;
}

.info-card a:hover { opacity: 0.7; }

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

/* ================= 产品详情 ================= */
.detail-facts {
  background: var(--white);
  border: 1px solid var(--border);
}

.detail-facts li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 13px 20px;
  border-bottom: 1px solid var(--border);
}

.detail-facts li:last-child { border-bottom: none; }

.detail-facts dt {
  flex-shrink: 0;
  width: 96px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--accent);
}

.detail-facts dd {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text);
}

/* ================= 滚动显现 ================= */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

.js .product.reveal.is-visible:hover { transform: translateY(-4px); }

/* ================= 响应式 ================= */
@media (max-width: 1024px) {
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .stats__item:nth-child(1),
  .stats__item:nth-child(2) { border-bottom: 1px solid var(--border); }
  .stats__item:nth-child(2) { border-right: none; }

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

  .equipment__layout { grid-template-columns: 1fr; gap: 44px; }
  .equipment__visual { position: static; }
  .equipment__visual img { height: 340px; }

  .process__steps { grid-template-columns: repeat(3, 1fr); row-gap: 34px; }
  .process__steps::before { display: none; }

  .about__layout { grid-template-columns: 1fr; gap: 36px; }
  .about__img { height: 320px; }

  .contact__layout { grid-template-columns: 1fr; gap: 48px; }

  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .split__img { height: 320px; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .site-nav__menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 24px;
    background: rgba(18, 42, 37, 0.99);
    border-top: 1px solid rgba(255, 255, 255, 0.07);
  }

  .site-nav__menu.is-open { display: flex; }

  .site-nav__menu a {
    padding: 14px 0;
    font-size: 0.94rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  }

  .site-nav__menu a::after { display: none; }
  .site-nav__menu li:last-child a { border-bottom: none; }

  .site-nav__toggle { display: flex; }

  .section { padding: 64px 20px; }
  .section__desc { margin-bottom: 36px; }

  .hero__content { padding: 104px 20px 72px; }
  .hero h1 { font-size: 1.6rem; }
  .hero__sub { font-size: 0.9rem; }
  .hero__brands { display: none; }

  .page-hero { padding: 116px 20px 60px; }
  .page-hero h1 { font-size: 1.6rem; }

  .stats__item { padding: 34px 12px; }
  .stats__num { font-size: 1.75rem; }

  .products__grid { grid-template-columns: 1fr; }
  .product__img { height: 210px; }

  .process__steps { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }

  .equipment__visual img { height: 250px; }
  .about__img { height: 240px; }

  .feature-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }

  .call-float { display: flex; }

  .site-footer { padding: 32px 20px 88px; }
}

@media (max-width: 480px) {
  .site-nav__inner { padding: 0 16px; }
  .site-nav__logo { font-size: 1.02rem; }

  .hero h1 { font-size: 1.38rem; }
  .hero__tags span { padding: 5px 12px; font-size: 0.7rem; }
  .hero__cta { padding: 12px 30px; font-size: 0.86rem; }

  .stats__num { font-size: 1.5rem; }
  .stats__label { font-size: 0.72rem; }

  .process__steps { grid-template-columns: 1fr; row-gap: 20px; }

  .step {
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: left;
  }

  .step__dot {
    flex-shrink: 0;
    width: 46px;
    height: 46px;
    margin: 0;
  }
}