/* ===== 大山峡 · 官网样式 =====
   设计系统：白 + 品牌绿，衬线大标题 + 无衬线正文
   ============================================= */

:root {
  --white: #ffffff;
  --mist: #f3f7f4;
  --mist-2: #f7faf8;
  --green: #146b44;
  --green-d: #07211a;
  --green-2: #0e2a21;
  --green-3: #12392e;
  --aqua: #4fb6d6;
  --ink: #0c1f18;
  --body: #4a5b53;
  --muted: #6b7a72;
  --muted-l: #8fa79a;
  --line: #e6ede8;
  --line-d: #1c3529;
  --radius: 14px;
  --sans:
    'Inter Tight', 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', 'Hiragino Sans GB',
    sans-serif;
  --serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', 'SimSun', serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--body);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
}

/* ---------- 布局 ---------- */
.wrap {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.sec {
  padding: 110px 0;
}
.sec--mist {
  background: var(--mist);
}
.sec--dark {
  background: var(--green-d);
  color: #a8bfb2;
}
.sec--tight {
  padding: 80px 0;
}

/* ---------- 排版 ---------- */
.eyebrow {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted-l);
  margin: 0 0 16px;
}
.sec--dark .eyebrow {
  color: #6baa88;
}
.display {
  font-family: var(--serif);
  font-size: clamp(34px, 4.4vw, 62px);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0;
}
.h2 {
  font-family: var(--serif);
  font-size: clamp(26px, 2.9vw, 38px);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0;
}
.h3 {
  font-family: var(--serif);
  font-size: clamp(19px, 1.8vw, 24px);
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
  margin: 0;
}
.lead {
  font-size: 17px;
  line-height: 1.95;
  color: var(--body);
  margin: 0;
  max-width: 600px;
}
.small {
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}
.sec--dark .display,
.sec--dark .h2,
.sec--dark .h3 {
  color: #fff;
}
.sec--dark .lead {
  color: #a8bfb2;
}

.sec-head {
  margin-bottom: 52px;
}
.sec-head--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 52px;
}
.sec-head--row .note {
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 320px;
  margin: 0;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 32px;
  border-radius: 6px;
  border: 0;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition:
    transform 0.35s var(--ease),
    background 0.3s,
    color 0.3s,
    box-shadow 0.35s var(--ease);
}
.btn:hover {
  transform: translateY(-2px);
}
.btn--primary {
  background: var(--green);
  color: #fff;
}
.btn--primary:hover {
  background: #0f5b39;
  box-shadow: 0 12px 26px -12px rgba(20, 107, 68, 0.7);
}
.btn--soft {
  background: #e9f1ec;
  color: var(--green);
}
.btn--soft:hover {
  background: #ddebe2;
}
.btn--ghost {
  background: var(--green-3);
  color: #c9dbd0;
}
.btn--ghost:hover {
  background: #17493a;
}
.btn--line {
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff;
  background: transparent;
}
.btn--line:hover {
  background: rgba(255, 255, 255, 0.08);
}
.cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.35s var(--ease);
}
.nav.is-stuck {
  box-shadow: 0 10px 30px -22px rgba(7, 33, 26, 0.55);
}
.nav-inner {
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
}
.logo img {
  width: 180px;
}
.logo__cn {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--green);
}
.logo__en {
  font-size: 8px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: #7c8b83;
  margin-top: 4px;
}
.menu {
  display: flex;
  align-items: center;
  gap: 34px;
}
.menu a {
  font-size: 14px;
  color: #4a5b53;
  letter-spacing: 0.02em;
  position: relative;
  transition: color 0.25s;
}
.menu a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -7px;
  height: 1px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.menu a:hover {
  color: var(--ink);
}
.menu a:hover::after,
.menu a.is-active::after {
  transform: scaleX(1);
}
.menu a.is-active {
  color: var(--ink);
  font-weight: 500;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 26px;
}
.hot {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.3;
}
.hot span {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: #7c8b83;
}
.hot strong {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle i {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  margin: 5px 0;
  transition: 0.3s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #ffffff 0%, #f2f8f4 100%);
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 480px);
  gap: 72px;
  align-items: center;
  padding: 96px 0 100px;
}
.hero-copy {
  max-width: 620px;
}
.badge-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}
.pill {
  display: inline-flex;
  align-items: center;
  padding: 7px 15px;
  border-radius: 999px;
  background: #e7f2eb;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--green);
}
.badge-row .dim {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.hero h1 {
  margin: 0 0 26px;
}
.hero .lead {
  margin-bottom: 34px;
  color: var(--body);
}
.trust {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  margin-top: 38px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.trust span {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: #7c8b83;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}
.arch {
  position: relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 413/620;
  background: linear-gradient(165deg, #f7fbf8 0%, #e8f3ec 100%);
  border: 1px solid #eaf1ec;
  border-radius: 240px 240px 12px 12px;
  box-shadow:
    0 40px 80px -60px rgba(7, 33, 26, 0.6),
    0 2px 0 #f3f7f4;
  overflow: hidden;
}
.arch img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 42%;
  mix-blend-mode: multiply;
}
.arch__tag {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  background: var(--green-d);
  color: #fff;
  border-radius: 999px;
  padding: 11px 22px;
  font-size: 12px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* ---------- 数据条 ---------- */
.stats {
  background: var(--green-d);
  color: #fff;
  padding: 62px 0;
}
.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: center;
  gap: 0;
}
.stat {
  padding: 0 12px;
}
.stat + .stat {
  border-left: 1px solid var(--line-d);
  padding-left: 40px;
}
.stat__num {
  font-family: var(--serif);
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: 0.01em;
  margin: 0 0 12px;
}
.stat__num em {
  font-style: normal;
  color: var(--aqua);
}
.stat__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: #8fa79a;
  margin: 0;
}

/* ---------- 冠军段 ---------- */
.champ {
  display: grid;
  grid-template-columns: minmax(0, 413px) minmax(0, 1fr);
  gap: 88px;
  align-items: center;
}
.champ__card {
  width: 100%;
  aspect-ratio: 413/620;
  overflow: hidden;
  border-radius: 207px 207px 8px 8px;
  background: #d3d4cf;
}
.champ__card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 30%;
}
.champ__body {
  max-width: 560px;
}
.quote {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.85;
  color: #c9dbd0;
  margin: 26px 0 30px;
}
.points {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line-d);
}
.points li {
  display: flex;
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-d);
  font-size: 14px;
  line-height: 1.85;
  color: #b9ccc2;
}
.points li::before {
  content: '';
  flex: 0 0 5px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--aqua);
  margin-top: 11px;
}
.points b {
  color: #fff;
  font-weight: 500;
  margin-right: 10px;
}
.sign {
  margin-top: 30px;
}
.sign strong {
  display: block;
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.08em;
  color: #fff;
}
.sign span {
  display: block;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: #7c8b83;
  margin-top: 4px;
}

/* ---------- 产品网格 ---------- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.prod-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    transform 0.5s var(--ease),
    box-shadow 0.5s var(--ease);
}
.prod-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 60px -40px rgba(7, 33, 26, 0.55);
}
.prod-card__img {
  aspect-ratio: 380/392;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.prod-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.prod-card__body {
  padding: 22px 26px 28px;
}
.prod-card__body h3 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 9px;
}
.prod-card__spec {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--green);
  margin: 0 0 10px;
}
.prod-card__desc {
  font-size: 12px;
  line-height: 1.85;
  color: var(--muted);
  margin: 0;
}
.prod-list {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.prod-list h4 {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--muted-l);
  margin: 0;
}
.prod-list__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid #f0f5f2;
}
.prod-list__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.prod-list__row b {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.prod-list__row span {
  font-size: 11px;
  color: var(--muted-l);
  letter-spacing: 0.04em;
}

/* ---------- 工厂 ---------- */
.factory-grid {
  display: grid;
  grid-template-columns: minmax(0, 700px) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}
.factory-visual {
  aspect-ratio: 700/452;
  border-radius: var(--radius);
  overflow: hidden;
  background: #edf3ef;
}
.factory-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cap {
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--muted-l);
  margin: 12px 0 0;
}
.cap-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 26px;
}
.cap-list li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 16px;
}
.cap-list em {
  font-style: normal;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--aqua);
  padding-top: 3px;
}
.cap-list h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 7px;
  letter-spacing: 0.02em;
}
.cap-list p {
  font-size: 12px;
  line-height: 1.85;
  color: var(--muted);
  margin: 0;
}

/* ---------- 对比 ---------- */
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.compare__col {
  border-radius: var(--radius);
  padding: 36px;
}
.compare__col--old {
  background: #12392e;
}
.compare__col--new {
  background: #fff;
  color: var(--body);
}
.compare__col h4 {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  margin: 0 0 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
}
.compare__col--old h4 {
  color: #7c8b83;
}
.compare__col--new h4 {
  color: var(--green);
  border-bottom-color: var(--line);
  font-weight: 600;
}
.compare__col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.compare__col li {
  font-size: 14px;
  line-height: 1.6;
  padding: 9px 0;
  display: flex;
  gap: 14px;
}
.compare__col--old li {
  color: #8fa79a;
}
.compare__col--new li {
  color: #2a3b33;
}
.compare__col li i {
  font-style: normal;
  opacity: 0.7;
  flex: 0 0 auto;
}

/* ---------- 卡片组 ---------- */
.cards {
  display: grid;
  gap: 24px;
}
.cards--3 {
  grid-template-columns: repeat(3, 1fr);
}
.cards--2 {
  grid-template-columns: repeat(2, 1fr);
}
.card {
  background: var(--mist);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition:
    background 0.4s,
    transform 0.45s var(--ease);
}
.card:hover {
  background: #eaf2ec;
  transform: translateY(-4px);
}
.card__tag {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--green);
  text-transform: uppercase;
  margin: 0 0 14px;
}
.card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 12px;
  letter-spacing: 0.02em;
}
.card p {
  font-size: 12px;
  line-height: 1.9;
  color: var(--muted);
  margin: 0;
}
.card--tall h3 {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  margin-bottom: 14px;
}

/* ---------- 时间轴 / 流程 ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.tl__phase {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--green);
  margin: 0 0 12px;
}
.tl h4 {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 12px;
}
.tl p {
  font-size: 12px;
  line-height: 1.9;
  color: var(--muted);
  margin: 0;
}
.tl {
  padding-top: 24px;
  border-top: 1px solid #d8e5dc;
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.flow__step .n {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--aqua);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 14px;
}
.flow__step h4 {
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  margin: 0;
  letter-spacing: 0.04em;
  padding-top: 14px;
  border-top: 1px solid var(--line-d);
}

/* ---------- FAQ ---------- */
.faq {
  display: flex;
  flex-direction: column;
}
.faq details {
  border-bottom: 1px solid var(--line);
  padding: 26px 0;
}
.faq details:first-of-type {
  border-top: 1px solid var(--line);
}
.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary::after {
  content: '+';
  font-family: var(--sans);
  font-size: 20px;
  color: var(--muted-l);
  line-height: 1;
  transition: transform 0.35s var(--ease);
}
.faq details[open] summary::after {
  transform: rotate(45deg);
}
.faq p {
  font-size: 14px;
  line-height: 1.95;
  color: var(--muted);
  margin: 16px 0 0;
  max-width: 900px;
}

/* ---------- 表单 ---------- */
.formcard {
  background: #fff;
  border-radius: var(--radius);
  padding: 44px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
  gap: 40px;
  align-items: center;
}
.formcard h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--ink);
  margin: 0;
}
.formcard p {
  font-size: 13px;
  color: var(--muted);
  margin: 10px 0 0;
}
.fields {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 16px;
}
.fields input {
  height: 54px;
  border: 0;
  border-radius: 8px;
  background: var(--mist-2);
  padding: 0 18px;
  font-family: inherit;
  font-size: 13px;
  color: var(--ink);
  outline: none;
  transition:
    box-shadow 0.3s,
    background 0.3s;
}
.fields input::placeholder {
  color: #a8b5ae;
}
.fields input:focus {
  background: #fff;
  box-shadow: 0 0 0 1.5px var(--green);
}

/* ---------- 新闻 ---------- */
.news-lead {
  display: block;
  background: var(--mist);
  border-radius: var(--radius);
  padding: 34px;
  transition: background 0.4s;
}
.news-lead:hover {
  background: #eaf2ec;
}
.news-lead .tag {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--green);
}
.news-lead h3 {
  font-family: var(--serif);
  font-size: clamp(20px, 2.2vw, 24px);
  font-weight: 600;
  color: var(--ink);
  margin: 14px 0 14px;
  line-height: 1.5;
}
.news-lead .date {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted-l);
}
.news-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition:
    padding 0.35s var(--ease),
    color 0.3s;
}
.news-row:hover {
  padding-left: 8px;
  color: var(--green);
}
.news-row b {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.news-row span {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted-l);
  flex: 0 0 auto;
}

/* ---------- 联系 ---------- */
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 80px;
  align-items: start;
}
.info {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.info li {
  font-size: 13px;
  line-height: 1.9;
  color: #c9dbd0;
  letter-spacing: 0.02em;
}
.info li b {
  color: #6baa88;
  font-weight: 500;
  display: inline-block;
  min-width: 88px;
}
.qr {
  width: 168px;
  height: 168px;
  border-radius: 10px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: #a8b5ae;
  letter-spacing: 0.08em;
}
.qr-wrap {
  text-align: center;
}
.qr-wrap p {
  font-size: 11px;
  color: #8fa79a;
  margin: 12px 0 0;
  letter-spacing: 0.06em;
}

/* ---------- 页头（内页） ---------- */
.pagehead {
  background: var(--green-d);
  color: #a8bfb2;
  padding: 86px 0 92px;
}
.pagehead--light {
  background: var(--mist);
  color: var(--body);
}
.crumb {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: #6e8279;
  margin: 0 0 20px;
}
.pagehead--light .crumb {
  color: var(--muted-l);
}
.pagehead .display {
  color: #fff;
  margin-bottom: 20px;
}
.pagehead--light .display {
  color: var(--ink);
}
.pagehead .lead {
  max-width: 720px;
  color: #a8bfb2;
}
.pagehead--light .lead {
  color: var(--body);
}
.pagehead__split {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: end;
}

/* ---------- 页脚 ---------- */
.footer {
  background: var(--green-d);
  color: #a8bfb2;
  padding: 88px 0 34px;
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 380px) repeat(3, minmax(0, 1fr));
  gap: 60px;
  padding-bottom: 54px;
}
.footer .logo__cn {
  color: #fff;
  font-size: 28px;
}
.footer .logo__en {
  color: #6e8279;
}
.footer .slogan {
  font-size: 14px;
  letter-spacing: 0.1em;
  color: #a8bfb2;
  margin: 16px 0 0;
}
.footer h4 {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: #6baa88;
  margin: 0 0 18px;
}
.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer ul a {
  font-size: 12px;
  color: #a8bfb2;
  transition: color 0.25s;
}
.footer ul a:hover {
  color: #fff;
}
.footer-bar {
  border-top: 1px solid var(--line-d);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-bar p {
  font-size: 11px;
  letter-spacing: 0.04em;
  color: #6e8279;
  margin: 0;
}

/* ---------- 已替换的旧灰框样式（保留） ---------- */
.ph {
  background: #edf3ef;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #a8b5ae;
  letter-spacing: 0.1em;
}

/* ---------- 滚动淡入 ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.9s var(--ease),
    transform 0.9s var(--ease);
}
.js .reveal.in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 56px;
    padding: 64px 0 72px;
  }
  .hero-visual {
    order: -1;
    max-width: 360px;
    margin: 0 auto;
  }
  .champ {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .champ__card {
    max-width: 360px;
    margin: 0 auto;
  }
  .factory-grid {
    grid-template-columns: 1fr;
  }
  .prod-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cards--3 {
    grid-template-columns: 1fr 1fr;
  }
  .timeline {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .flow {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
  .compare {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .formcard {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .contact {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .stats-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .stat + .stat {
    border-left: 0;
    padding-left: 12px;
  }
  .stat:nth-child(even) {
    border-left: 1px solid var(--line-d);
    padding-left: 28px;
  }
}
@media (max-width: 820px) {
  .logo img {
    width: 100px;
  }
  .menu,
  .hot {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .nav.is-open .menu {
    display: flex;
    position: absolute;
    left: 0;
    right: 0;
    top: 88px;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 20px;
  }
  .nav.is-open .menu a {
    padding: 13px 0;
    width: 100%;
    border-bottom: 1px solid #f2f6f3;
  }
  .nav.is-open .menu a::after {
    display: none;
  }
  .sec {
    padding: 72px 0;
  }
  .sec .cards {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .prod-grid,
  .cards--3,
  .cards--2 {
    grid-template-columns: 1fr;
  }

  .timeline {
    grid-template-columns: 1fr;
  }
  .flow {
    grid-template-columns: 1fr 1fr;
  }
  .fields {
    grid-template-columns: 1fr;
  }
  .sec-head--row {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .footer-bar {
    flex-direction: column;
    gap: 8px;
  }
  .footer-bar .a {
    display: none;
  }
  .display {
    font-size: 32px;
  }
  .pagehead {
    padding: 56px 0 64px;
  }
}