/* =========================================================
   杉的展览 · 公共样式（组件化复用，避免页面内重复）
   ========================================================= */

:root {
  /* 舒适中性色：石板蓝灰 + 柔和暖铜点缀（告别 Logo 绿） */
  --brand: #2c3544;
  --brand-mid: #3f4f66;
  --brand-soft: #eef1f5;
  --lime: #5d7a95;
  --orange: #c48a5a;
  --ink: #1c2230;
  --muted: #4a5568;
  --line: rgba(44, 53, 68, 0.11);
  --paper: #ffffff;
  --white: #ffffff;
  --danger: #c62828;
  --shadow: 0 18px 50px rgba(28, 34, 48, 0.1);
  --overlay: rgba(20, 24, 32, 0.72);
  --radius: 14px;
  --nav-h: 64px;
  --wrap-max: 1400px;
  --wrap: min(var(--wrap-max), calc(100% - 2.4rem));
  --font-display: "Microsoft YaHei", "微软雅黑", sans-serif;
  --font-sans: "Microsoft YaHei", "微软雅黑", sans-serif;
  --font-en: "Microsoft YaHei", "微软雅黑", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: #fff;
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

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

ul,
ol {
  list-style: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.wrap {
  width: var(--wrap);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ---------- 按钮 / 标签（全局复用） ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 46px;
  padding: 0.7rem 1.35rem;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), background 0.25s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  color: var(--white);
  background: var(--brand-mid);
  box-shadow: 0 10px 24px rgba(44, 53, 68, 0.18);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--brand);
  box-shadow: 0 14px 30px rgba(44, 53, 68, 0.22);
}

.btn-ghost {
  color: var(--brand);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: var(--white);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  background: rgba(93, 122, 149, 0.12);
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 600;
}

.en {
  font-family: var(--font-en);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------- 分区标题（全站统一） ---------- */
.section {
  padding: 4.5rem 0;
}

.section-head {
  margin-bottom: 2.4rem;
  max-width: 34rem;
}

.section-head .en {
  display: block;
  color: var(--orange);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  margin-bottom: 0.55rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 4vw, 2.55rem);
  color: var(--brand);
  line-height: 1.3;
  letter-spacing: 0.04em;
  position: relative;
  padding-left: 0.95rem;
}

.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.38em;
  width: 0;
  height: 0;
  border-top: 0.38em solid transparent;
  border-bottom: 0.38em solid transparent;
  border-left: 0.5em solid var(--orange);
}

.section-head p {
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: 0.98rem;
  font-weight: 300;
  line-height: 1.85;
  letter-spacing: 0.02em;
}

.section-head-plain h2 {
  padding-left: 0;
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.section-head-plain h2::before {
  display: none;
  content: none;
  border: 0;
}

/* 案例页「项目实景」强制无箭头 */
[data-page="cases"] .section-head h2 {
  padding-left: 0;
}

[data-page="cases"] .section-head h2::before {
  display: none;
  content: none;
  border: 0;
}

.section-alt {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.2));
  border-block: 1px solid var(--line);
}

/* ---------- 顶栏导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: #fff;
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 8px 24px rgba(44, 53, 68, 0.06);
}

.header-inner {
  width: var(--wrap);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.brand img {
  height: 40px;
  width: auto;
  object-fit: contain;
  background: transparent;
  border-radius: 0;
  padding: 0;
}

.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-left: auto;
  flex-shrink: 0;
  padding: 0.52rem 0.95rem;
  border-radius: 999px;
  background: var(--orange);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  box-shadow: 0 6px 16px rgba(196, 138, 90, 0.35);
  transition: background 0.25s ease, transform 0.25s var(--ease), box-shadow 0.25s ease;
}

.header-phone:hover {
  background: #b37748;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(196, 138, 90, 0.45);
}

.header-phone-icon {
  width: 16px;
  height: 16px;
  fill: currentColor;
  flex-shrink: 0;
}

@media (max-width: 480px) {
  .header-phone {
    padding: 0.48rem 0.7rem;
    font-size: 0.82rem;
    gap: 0.3rem;
  }
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  flex-shrink: 0;
  margin-left: 0;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
  position: relative;
  transition: 0.25s ease;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

body.nav-open .nav-toggle span {
  background: transparent;
}

body.nav-open .nav-toggle span::before {
  top: 0;
  transform: rotate(45deg);
}

body.nav-open .nav-toggle span::after {
  top: 0;
  transform: rotate(-45deg);
}

.site-nav {
  position: fixed;
  inset: var(--nav-h) 0 0 auto;
  width: min(100%, 360px);
  background: #fff;
  border-left: 1px solid var(--line);
  transform: translateX(105%);
  transition: transform 0.4s var(--ease);
  overflow-y: auto;
  padding: 0.6rem 1rem 2rem;
  box-shadow: var(--shadow);
  z-index: 95;
}

body.nav-open .site-nav {
  transform: translateX(0);
}

body.nav-open::before {
  content: "";
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: rgba(44, 53, 68, 0.28);
  z-index: 90;
}

.nav-list > li {
  border-bottom: 1px solid var(--line);
}

.nav-link,
.nav-sub-toggle {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.45rem;
  padding: 0.95rem 0.35rem;
  color: var(--ink);
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1.3;
  text-decoration: none;
}

.nav-parent {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  width: 100%;
}

.nav-parent > .nav-sub-toggle {
  flex: 1;
  min-width: 0;
  justify-content: flex-start;
}

.nav-chev-btn {
  flex-shrink: 0;
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.nav-link.is-active,
.nav-item.is-active > .nav-sub-toggle,
.nav-item.is-active > .nav-parent > .nav-sub-toggle,
.nav-sub a.is-active {
  color: var(--brand-mid);
  font-weight: 700;
}

.nav-chev {
  width: 0.7rem;
  height: 0.7rem;
  flex-shrink: 0;
  display: block;
  color: var(--muted);
  transition: transform 0.28s var(--ease), color 0.2s ease;
}

.nav-sub-toggle:hover .nav-chev,
.nav-chev-btn:hover .nav-chev,
.nav-item.is-open > .nav-sub-toggle .nav-chev,
.nav-item.is-open > .nav-parent .nav-chev {
  color: var(--brand);
}

/* 移动端：向下箭头，展开后向上 */
.nav-item.is-open > .nav-sub-toggle > .nav-chev,
.nav-item.is-open > .nav-parent .nav-chev {
  transform: rotate(180deg);
}

.nav-sub {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition:
    max-height 0.38s var(--ease),
    opacity 0.28s ease,
    padding 0.28s ease;
  padding: 0;
}

.nav-item.is-open > .nav-sub {
  max-height: 70vh;
  opacity: 1;
  padding-bottom: 0.55rem;
  overflow-y: auto;
}

.nav-sub a {
  display: block;
  padding: 0.55rem 0.25rem 0.55rem 0.75rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.nav-sub a:hover {
  color: var(--brand);
}

.nav-sub .nav-item > .nav-sub-toggle {
  font-size: 0.92rem;
  color: var(--muted);
  padding: 0.55rem 0.25rem 0.55rem 0.75rem;
}

.nav-sub .nav-sub a {
  padding-left: 1.35rem;
}

/* 行业案例列表：隐藏系统滚动条（自定义 1px 细条在桌面端绘制） */
.nav-scroll-viewport {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-scroll-viewport::-webkit-scrollbar {
  width: 0 !important;
  height: 0 !important;
  display: none !important;
}

.nav-scroll-viewport::-webkit-scrollbar-button {
  display: none !important;
  width: 0 !important;
  height: 0 !important;
}

@media (min-width: 1080px) {
  .nav-toggle {
    display: none;
  }

  .header-inner {
    height: 100%;
  }

  .site-nav {
    position: static;
    width: auto;
    height: 100%;
    transform: none;
    background: transparent;
    border: 0;
    box-shadow: none;
    overflow: visible;
    padding: 0;
    z-index: auto;
    margin-left: auto;
  }

  .header-phone {
    margin-left: 0.85rem;
  }

  body.nav-open::before {
    display: none;
  }

  .nav-list {
    display: flex;
    align-items: stretch;
    height: 100%;
    gap: 0.55rem;
  }

  .nav-list > li {
    border: 0;
    position: relative;
    display: flex;
    align-items: stretch;
  }

  .nav-list > li > .nav-link,
  .nav-list > li > .nav-sub-toggle,
  .nav-list > li > .nav-parent {
    width: auto;
    height: 100%;
    padding: 0 1.15rem;
    font-size: 0.95rem;
    white-space: nowrap;
    justify-content: center;
    gap: 0.4rem;
    border-bottom: 2px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    letter-spacing: 0.04em;
  }

  .nav-list > li > .nav-parent {
    padding-right: 0.55rem;
  }

  .nav-list > li > .nav-parent > .nav-sub-toggle {
    width: auto;
    height: 100%;
    padding: 0;
    border-bottom: 0;
  }

  .nav-list > li > .nav-parent > .nav-chev-btn {
    height: 100%;
    width: 1.4rem;
  }

  .nav-list > li > .nav-link:hover,
  .nav-list > li > .nav-sub-toggle:hover,
  .nav-list > li > .nav-parent:hover,
  .nav-list > li.is-hover > .nav-sub-toggle,
  .nav-list > li.is-hover > .nav-parent,
  .nav-list > li.is-active > .nav-link,
  .nav-list > li.is-active > .nav-sub-toggle,
  .nav-list > li.is-active > .nav-parent {
    color: var(--brand-mid);
    border-bottom-color: var(--lime);
  }

  /* 一级：向下三角箭头 */
  .nav-list > .nav-item > .nav-sub-toggle .nav-chev,
  .nav-list > .nav-item > .nav-parent .nav-chev {
    width: 0.62rem;
    height: 0.62rem;
    transform: none;
  }

  .nav-list > .nav-item.is-hover > .nav-sub-toggle .nav-chev,
  .nav-list > .nav-item.is-open > .nav-sub-toggle .nav-chev,
  .nav-list > .nav-item.is-hover > .nav-parent .nav-chev,
  .nav-list > .nav-item.is-open > .nav-parent .nav-chev {
    transform: rotate(180deg);
  }

  /* 下拉贴齐 header 底边，动态展开 */
  .nav-list > .nav-item > .nav-sub {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 208px;
    max-height: none;
    overflow: visible;
    margin: 0;
    padding: 0.45rem;
    background: #fff;
    border: 1px solid var(--line);
    border-top: 2px solid var(--lime);
    border-radius: 0 0 12px 12px;
    box-shadow: 0 16px 36px rgba(44, 53, 68, 0.12);
    z-index: 30;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(10px);
    transition:
      opacity 0.28s var(--ease),
      transform 0.28s var(--ease),
      visibility 0.28s;
  }

  .nav-list > .nav-item.is-hover > .nav-sub,
  .nav-list > .nav-item.is-open > .nav-sub,
  .nav-list > .nav-item:focus-within > .nav-sub {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
    max-height: none;
    overflow: visible;
    padding: 0.45rem;
  }

  .nav-list > .nav-item > .nav-sub .nav-item {
    position: relative;
  }

  /* 二级：向右箭头 */
  .nav-list > .nav-item > .nav-sub .nav-sub-toggle .nav-chev {
    transform: rotate(-90deg);
  }

  .nav-list > .nav-item > .nav-sub .nav-item.is-hover > .nav-sub-toggle .nav-chev,
  .nav-list > .nav-item > .nav-sub .nav-item.is-open > .nav-sub-toggle .nav-chev {
    transform: rotate(-90deg);
    color: var(--brand);
  }

  .nav-list > .nav-item > .nav-sub .nav-sub {
    display: block;
    position: absolute;
    left: calc(100% + 2px);
    top: -0.45rem;
    min-width: 176px;
    max-height: min(70vh, 420px);
    overflow: hidden;
    margin: 0;
    padding: 0;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: 0 16px 36px rgba(44, 53, 68, 0.12);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(8px);
    transition:
      opacity 0.28s var(--ease),
      transform 0.28s var(--ease),
      visibility 0.28s;
  }

  .nav-list > .nav-item > .nav-sub .nav-item.is-hover > .nav-sub,
  .nav-list > .nav-item > .nav-sub .nav-item.is-open > .nav-sub,
  .nav-list > .nav-item > .nav-sub .nav-item:focus-within > .nav-sub {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
    max-height: min(70vh, 420px);
    overflow: hidden;
  }

  /* 行业案例：自定义极细滚动（无上下箭头） */
  .nav-scroll-host {
    list-style: none;
    margin: 0;
    padding: 0;
    display: block;
  }

  .nav-scroll {
    position: relative;
    height: 100%;
    max-height: min(70vh, 420px);
  }

  .nav-scroll-viewport {
    list-style: none;
    margin: 0;
    max-height: min(70vh, 420px);
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.4rem 0.55rem 0.4rem 0.45rem;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .nav-scroll-viewport::-webkit-scrollbar {
    width: 0 !important;
    height: 0 !important;
    display: none !important;
    background: transparent;
  }

  .nav-scroll-viewport::-webkit-scrollbar-button {
    display: none !important;
    width: 0 !important;
    height: 0 !important;
  }

  .nav-scroll-rail {
    position: absolute;
    top: 8px;
    right: 4px;
    bottom: 8px;
    width: 1px;
    background: #e8eaed;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
  }

  .nav-scroll.has-overflow .nav-scroll-rail {
    opacity: 1;
  }

  .nav-scroll-thumb {
    position: absolute;
    top: 0;
    left: 0;
    width: 1px;
    background: #3d4f66;
    pointer-events: none;
    will-change: transform;
  }

  .nav-sub a,
  .nav-sub .nav-sub-toggle {
    width: 100%;
    border-radius: 8px;
    padding: 0.6rem 0.75rem;
    justify-content: space-between;
  }

  .nav-sub a:hover,
  .nav-sub .nav-sub-toggle:hover {
    background: var(--brand-soft);
    color: var(--brand);
  }
}

/* ---------- Hero（首屏单一构图） ---------- */
.hero {
  position: relative;
  height: 75vh;
  min-height: 420px;
  display: grid;
  align-items: center;
  color: var(--white);
  overflow: hidden;
  cursor: grab;
  touch-action: pan-y;
  user-select: none;
}

.hero.is-dragging {
  cursor: grabbing;
}

.hero .btn,
.hero a,
.hero-dot,
.hero-nav {
  cursor: pointer;
  user-select: auto;
}

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

.hero-slides {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translateX(100%);
  transition: transform 0.75s var(--ease);
  will-change: transform;
  pointer-events: none;
  z-index: 0;
}

.hero-slide.is-active {
  transform: translateX(0);
  z-index: 2;
}

.hero-slide.is-left {
  transform: translateX(-100%);
  z-index: 1;
}

.hero-slide.is-no-anim {
  transition: none !important;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  background:
    linear-gradient(105deg, rgba(18, 22, 30, 0.72) 0%, rgba(18, 22, 30, 0.38) 52%, rgba(18, 22, 30, 0.22) 100%),
    linear-gradient(0deg, rgba(18, 22, 30, 0.35) 0%, transparent 42%, rgba(18, 22, 30, 0.28) 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 4;
  width: var(--wrap);
  margin: 0 auto;
  padding: 0;
  animation: fadeUp 0.9s var(--ease) both;
  max-width: 56rem;
  margin-left: max(calc((100% - var(--wrap)) / 2), 1.2rem);
  pointer-events: none;
}

.hero-content .btn {
  pointer-events: auto;
}

.hero .btn-primary,
.hero .btn-ghost {
  color: #fff;
  background: rgba(255, 255, 255, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: none;
  backdrop-filter: blur(8px);
}

.hero .btn-primary:hover,
.hero .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.34);
  border-color: rgba(255, 255, 255, 0.7);
  box-shadow: none;
  transform: translateY(-2px);
}

.hero-nav {
  position: absolute;
  top: 50%;
  z-index: 5;
  transform: translateY(-50%) scale(0.92);
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  background: rgba(44, 53, 68, 0.35);
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  backdrop-filter: blur(6px);
  transition:
    opacity 0.3s var(--ease),
    visibility 0.3s,
    transform 0.3s var(--ease),
    background 0.2s ease,
    border-color 0.2s ease;
}

.hero-nav svg {
  width: 20px;
  height: 20px;
  display: block;
}

.hero-nav-prev {
  left: clamp(0.8rem, 2.5vw, 1.8rem);
}

.hero-nav-next {
  right: clamp(0.8rem, 2.5vw, 1.8rem);
}

.hero:hover .hero-nav,
.hero:focus-within .hero-nav {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}

.hero-nav:hover {
  background: rgba(44, 53, 68, 0.62);
  border-color: rgba(255, 255, 255, 0.7);
}

.hero-nav:active {
  transform: translateY(-50%) scale(0.96);
}

.hero.is-dragging .hero-nav {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.hero h1 {
  font-family: var(--font-sans);
  font-size: clamp(1.05rem, 2.6vw, 1.35rem);
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1.65;
  max-width: 22em;
  margin-bottom: 0.85rem;
  color: rgba(255, 255, 255, 0.94);
}

.hero > .hero-content > p,
.hero-lead {
  max-width: 38em;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1.85rem;
  font-size: clamp(0.9rem, 2vw, 1rem);
  font-weight: 300;
  line-height: 1.85;
  letter-spacing: 0.04em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.hero-dots {
  position: absolute;
  left: 50%;
  bottom: 1.6rem;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.hero-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  border: 0;
  padding: 0;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: width 0.35s var(--ease), background 0.25s ease;
}

.hero-dot.is-active {
  width: 22px;
  background: #fff;
}

.hero-dot:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

@media (hover: none) {
  .hero-nav {
    opacity: 0.85;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(-50%) scale(1);
    width: 40px;
    height: 40px;
  }
}

.page-hero {
  position: relative;
  min-height: 42vh;
  display: grid;
  align-items: end;
  color: var(--white);
  overflow: hidden;
}

.page-hero .hero-media {
  position: absolute;
  inset: 0;
}

.page-hero .hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-hero .hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(18, 22, 30, 0.72) 0%, rgba(18, 22, 30, 0.38) 52%, rgba(18, 22, 30, 0.22) 100%),
    linear-gradient(0deg, rgba(18, 22, 30, 0.55) 0%, transparent 48%);
}

.page-hero .hero-content {
  position: relative;
  z-index: 1;
  width: var(--wrap);
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  padding: 3.5rem 0 2.4rem;
  text-align: left;
  pointer-events: auto;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
}

.page-hero .en {
  opacity: 0.75;
  margin-bottom: 0.4rem;
  display: block;
}

/* ---------- 通用内容块 ---------- */
.lead {
  color: var(--muted);
  max-width: 46rem;
}

.stack {
  display: grid;
  gap: 1rem;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 1.1rem;
}

@media (min-width: 720px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 980px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 交互容器才用面板，避免无意义卡片堆叠 */
.panel {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  backdrop-filter: blur(6px);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.panel:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.panel h3 {
  font-size: 1.08rem;
  color: var(--brand);
  margin-bottom: 0.4rem;
}

.panel p {
  color: var(--muted);
  font-size: 0.94rem;
}

.feature-num {
  font-family: var(--font-en);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--orange);
  margin-bottom: 0.45rem;
}

/* ---------- Tabs（关于我们页内分类链接） ---------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  transition: 0.25s ease;
  text-decoration: none;
  font: inherit;
}

.tab-btn.is-active,
.tab-btn:hover {
  color: var(--white);
  background: var(--brand-mid);
  border-color: transparent;
}

/* ---------- 服务范围单页 ---------- */
.service-scope-grid {
  display: grid;
  gap: 2rem 1.25rem;
}

@media (min-width: 720px) {
  .service-scope-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .service-scope-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem 1.35rem;
  }
}

.service-scope-item {
  text-align: center;
  max-width: 320px;
  margin-inline: auto;
  padding: 0.85rem 0.75rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform 0.35s var(--ease), box-shadow 0.35s ease, border-color 0.35s ease, background 0.35s ease;
}

.service-scope-item:hover {
  transform: translateY(-6px);
  background: #fff;
  border-color: var(--line);
  box-shadow: 0 16px 36px rgba(44, 53, 68, 0.1);
}

.service-scope-media {
  width: 80%;
  margin: 0 auto 1.1rem;
  border-radius: var(--radius);
  overflow: hidden;
  background: #f3f4f6;
}

.service-scope-media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  transition: transform 0.55s var(--ease);
}

.service-scope-item:hover .service-scope-media img {
  transform: scale(1.04);
}

.service-scope-item h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--brand);
  margin-bottom: 0.25rem;
  transition: color 0.3s ease;
}

.service-scope-item:hover h2 {
  color: var(--orange);
}

.service-scope-item > .en {
  display: block;
  color: var(--orange);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.65rem;
}

.service-scope-item > p:not(.en) {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
  margin-bottom: 0.45rem;
}

.service-scope-desc-en {
  font-size: 0.78rem !important;
  line-height: 1.65 !important;
  opacity: 0.85;
  margin-bottom: 0 !important;
}

/* ---------- 案例画廊 ---------- */
.case-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0;
  border-bottom: 0;
}

.case-cat,
.filter-btn {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  transition: 0.25s ease;
  text-decoration: none;
  font: inherit;
  font-size: 0.95rem;
  line-height: 1.3;
  box-shadow: none;
}

.case-cat:hover,
.filter-btn:hover {
  color: var(--white);
  background: var(--brand-mid);
  border-color: transparent;
}

.case-cat.is-active,
.filter-btn.is-active {
  color: var(--white);
  background: var(--brand-mid);
  border-color: transparent;
  font-weight: 600;
}

.industry-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1.5rem;
  padding: 0.9rem 0 0;
  border-top: 1px solid var(--line);
  background: transparent;
  border-radius: 0;
}

.industry-chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  cursor: pointer;
  transition: 0.25s ease;
  text-decoration: none;
  font-size: 0.86rem;
  line-height: 1.3;
  box-shadow: none;
}

.industry-chip:hover {
  color: var(--brand);
  border-color: rgba(44, 53, 68, 0.28);
  background: rgba(44, 53, 68, 0.04);
}

.industry-chip.is-active {
  color: var(--white);
  background: var(--orange);
  border-color: transparent;
  font-weight: 600;
}

.gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

@media (min-width: 700px) {
  .gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .gallery {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.35rem;
  }
}

.gallery-item {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
  transition: transform 0.35s var(--ease), box-shadow 0.35s ease;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(44, 53, 68, 0.1);
}

a.gallery-item.is-hidden {
  display: none;
}

.gallery-media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: #eef1f5;
}

.gallery-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.7s var(--ease);
}

.gallery-item:hover .gallery-media img {
  transform: scale(1.04);
}

.gallery-body {
  padding: 1rem 1.05rem 1.15rem;
}

.gallery-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--brand);
  margin-bottom: 0.65rem;
  line-height: 1.4;
}

.gallery-meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.gallery-meta li {
  font-size: 0.88rem;
  color: var(--ink);
  line-height: 1.55;
}

.gallery-meta span {
  color: var(--muted);
}

.gallery-item.is-hidden {
  display: none;
}

/* ---------- 帝国CMS 列表分页 [!--show.page--] / [!--show.listpage--] ---------- */
.pagecase {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  margin-top: 2.4rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  line-height: 1;
  color: var(--muted);
  text-align: center;
}

.pagecase a,
.pagecase b,
.pagecase strong,
.pagecase span,
.pagecase font {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.35rem;
  height: 2.35rem;
  padding: 0 0.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--brand);
  text-decoration: none;
  font-weight: 500;
  font-style: normal;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.pagecase a:hover {
  background: var(--brand-soft);
  border-color: rgba(44, 53, 68, 0.22);
  color: var(--brand);
  transform: translateY(-1px);
}

/* 当前页：帝国CMS 常用 <b> / <strong> 包裹 */
.pagecase b,
.pagecase strong,
.pagecase span.current,
.pagecase .current,
.pagecase font[color],
.pagecase a.current,
.pagecase a.on {
  background: var(--brand);
  border-color: var(--brand);
  color: var(--white);
  font-weight: 600;
  cursor: default;
}

.pagecase b a,
.pagecase strong a {
  min-width: 0;
  height: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
}

/* 首页/上一页/下一页/尾页等文字链略宽 */
.pagecase a[href*="index"],
.pagecase a:first-child,
.pagecase a:nth-child(2) {
  min-width: auto;
}

/* 下拉跳转（show.page 下拉式） */
.pagecase select {
  height: 2.35rem;
  min-width: 4.5rem;
  margin-left: 0.15rem;
  padding: 0 0.65rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--brand);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
}

.pagecase select:focus {
  border-color: var(--brand-mid);
  box-shadow: 0 0 0 3px rgba(44, 53, 68, 0.08);
}

/* 清理帝国CMS 分页里常见的多余空格节点观感 */
.pagecase > br {
  display: none;
}

@media (max-width: 699px) {
  .pagecase {
    gap: 0.35rem;
    margin-top: 1.8rem;
    padding-top: 1.25rem;
  }

  .pagecase a,
  .pagecase b,
  .pagecase strong,
  .pagecase span,
  .pagecase font {
    min-width: 2.1rem;
    height: 2.1rem;
    padding: 0 0.55rem;
    font-size: 0.84rem;
  }
}

/* ---------- 案例详情 ---------- */
.case-gallery {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.case-gallery-stage {
  border-radius: var(--radius);
  overflow: hidden;
  background: #eef1f5;
  border: 1px solid var(--line);
  user-select: none;
  touch-action: pan-y;
  cursor: grab;
}

.case-gallery-stage.is-dragging {
  cursor: grabbing;
}

.case-gallery-viewport {
  overflow: hidden;
  width: 100%;
}

.case-gallery-track {
  display: flex;
  width: 100%;
  transition: transform 0.35s var(--ease);
  will-change: transform;
}

.case-gallery-track.is-dragging {
  transition: none;
}

.case-gallery-slide {
  flex: 0 0 100%;
  min-width: 100%;
}

.case-gallery-slide img {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
}

.case-gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  gap: 0.55rem;
}

.case-thumb {
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  padding: 0;
  background: #fff;
  cursor: pointer;
  opacity: 0.72;
  transition: opacity 0.25s ease, border-color 0.25s ease;
}

.case-thumb.is-active,
.case-thumb:hover {
  opacity: 1;
  border-color: var(--orange);
}

.case-thumb img {
  display: block;
  width: 100%;
  height: 72px;
  object-fit: cover;
}

.gallery-item[id] {
  scroll-margin-top: 6rem;
}

.case-detail-name {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  font-weight: 600;
  color: var(--brand);
  margin-bottom: 0.85rem;
}

.case-detail-meta {
  max-width: 28rem;
}

/* ---------- 优势 / 工厂优势 ---------- */
.factory-adv-en-head {
  margin-top: 0.35rem !important;
  color: #8a939e !important;
  font-size: 1.05rem !important;
  font-weight: 500 !important;
  letter-spacing: 0.02em;
}

.factory-adv {
  display: grid;
  gap: 1.75rem;
  align-items: center;
}

@media (min-width: 980px) {
  .factory-adv {
    grid-template-columns: 1fr minmax(300px, 460px) 1fr;
    gap: 1.5rem 1.75rem;
  }
}

.factory-adv-col {
  display: grid;
  gap: 1.75rem;
}

.factory-adv-item h3 {
  color: var(--ink);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.45rem;
}

.factory-adv-item > p:not(.factory-adv-en) {
  color: var(--ink);
  font-size: 0.92rem;
  line-height: 1.75;
  margin-bottom: 0.85rem;
}

.factory-adv-item h4 {
  color: #5c6670;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.factory-adv-item .factory-adv-en {
  color: #8a939e;
  font-size: 0.88rem;
  line-height: 1.7;
  margin: 0;
}

.factory-adv-visual {
  width: min(100%, 460px);
  margin: 0.25rem auto;
}

.factory-adv-visual img {
  display: block;
  width: 100%;
  height: auto;
}

@media (max-width: 979px) {
  .factory-adv-visual {
    order: -1;
    width: min(100%, 520px);
  }
}

/* ---------- 覆盖地图示意 ---------- */
.coverage {
  display: grid;
  gap: 1rem;
}

@media (min-width: 800px) {
  .coverage {
    grid-template-columns: 1fr 1fr;
  }
}

.coverage-block {
  padding: 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, rgba(93, 122, 149, 0.12), transparent 50%),
    rgba(255, 255, 255, 0.75);
}

.coverage-block.overseas {
  background:
    linear-gradient(145deg, rgba(230, 122, 40, 0.12), transparent 50%),
    rgba(255, 255, 255, 0.75);
}

.coverage-block h3 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  color: var(--brand);
  margin-bottom: 0.55rem;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.9rem;
}

.chip-list span {
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  background: rgba(44, 53, 68, 0.08);
  font-size: 0.82rem;
  color: var(--brand);
}

.chip-list .chip-hot {
  background: var(--orange);
  color: #fff;
  font-weight: 600;
}

.china-coverage {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

@media (min-width: 960px) {
  .china-coverage {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 2rem;
  }
}

.china-map {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: #e8f0f8;
}

.china-map img {
  display: block;
  width: 100%;
  height: auto;
}

.china-regions {
  display: grid;
  gap: 1rem;
}

/* ---------- 联系 ---------- */
.contact-page {
  max-width: 920px;
}

.contact-page-head {
  margin-bottom: 2rem;
}

.contact-page-en {
  color: var(--orange);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  margin-bottom: 0.55rem;
}

.contact-page-head h2 {
  font-family: var(--font-display);
  color: var(--brand);
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 0.55rem;
}

.contact-slogan {
  color: var(--orange);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

.contact-page-lead {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 36rem;
}

.contact-channel-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .contact-channel-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.15rem 1.35rem;
  }
}

.contact-channel {
  display: grid;
  gap: 0.45rem;
  padding: 1.15rem 0 1.25rem;
  border-top: 1px solid var(--line);
}

.contact-channel-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.contact-channel a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--brand);
  font-weight: 600;
  font-size: 1.02rem;
  text-decoration: none;
  width: fit-content;
  transition: color 0.2s ease, transform 0.2s ease;
}

.contact-channel a:hover {
  color: var(--orange);
  transform: translateX(2px);
}

.contact-channel .footer-icon {
  width: 1.05rem;
  height: 1.05rem;
  fill: currentColor;
  flex-shrink: 0;
}

.contact-page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 2rem;
  padding: 3rem 0 1.4rem;
  background: #1f1f1f;
  color: rgba(255, 255, 255, 0.78);
}

.footer-top {
  display: grid;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 900px) {
  .footer-top {
    grid-template-columns: 1.15fr 1.6fr;
    gap: 3rem;
    align-items: start;
  }
}

.footer-brand .footer-logo {
  display: block;
  height: 48px;
  width: auto;
  margin-bottom: 0.85rem;
  /* 深色页脚上显示为白色 */
  filter: brightness(0) invert(1);
}

.footer-brand strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.04em;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.footer-slogan {
  color: rgba(230, 122, 40, 0.95);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  margin-bottom: 0.4rem;
}

.footer-desc {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.88rem;
  font-weight: 300;
  line-height: 1.7;
}

.footer-cols {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .footer-cols {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem 2rem;
  }
}

.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 0.9rem;
  text-transform: none;
}

.footer-col a {
  display: block;
  padding: 0.28rem 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  transition: color 0.25s ease, transform 0.25s var(--ease);
}

.footer-col a:hover {
  color: #fff;
  transform: translateX(3px);
}

.footer-contact a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-en);
  font-size: 0.88rem;
  letter-spacing: 0.03em;
}

.footer-icon {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  fill: currentColor;
  opacity: 0.72;
}

.copyright {
  margin-top: 1.2rem;
  padding-top: 0;
  border-top: 0;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.02em;
}

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.5rem;
  z-index: 80;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(44, 53, 68, 0.28);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s var(--ease), background 0.25s ease;
}

.back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--orange);
}

.back-top svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

@media (max-width: 720px) {
  .back-top {
    right: 1rem;
    bottom: 1.15rem;
    width: 42px;
    height: 42px;
  }
}

/* ---------- 首页预览条 ---------- */
.preview-row {
  display: grid;
  gap: 0.8rem;
}

@media (min-width: 760px) {
  .preview-row {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.preview-feature {
  position: relative;
  min-height: 260px;
  border-radius: var(--radius);
  overflow: hidden;
}

.preview-feature img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-feature span {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.35rem;
  text-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

.split-media {
  display: grid;
  gap: 1.25rem;
  align-items: center;
}

@media (min-width: 880px) {
  .split-media {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

.split-media .media {
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 280px;
}

.split-media .media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 280px;
}

.about-intro-title {
  font-family: var(--font-display);
  color: var(--brand);
  font-size: clamp(1.55rem, 3vw, 2.1rem);
  font-weight: 600;
  line-height: 1.35;
  margin-top: 0.75rem;
}

.about-layout {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

@media (min-width: 960px) {
  .about-layout {
    grid-template-columns: minmax(0, 1.68fr) minmax(211px, 0.57fr);
    gap: 2rem;
  }
}

.about-prose {
  margin-top: 1.25rem;
}

.about-prose p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.9;
  margin-bottom: 1rem;
}

.about-prose p:last-child {
  margin-bottom: 0;
}

.about-highlight {
  margin-top: 1.75rem;
}

.about-culture {
  margin-top: 0.5rem;
}

.about-culture .panel h3 {
  font-size: 1.05rem;
}

.about-intro-panel {
  position: relative;
  overflow: hidden;
  min-height: auto;
  padding: 0.25rem 0 0.5rem;
  background: transparent;
  clip-path: none;
}

.about-intro-panel::before,
.about-intro-panel::after {
  display: none;
}

.about-intro-copy {
  position: relative;
  z-index: 1;
}

.about-intro-zh {
  color: #2a3038;
  font-size: 1.02rem;
  line-height: 1.9;
  margin-bottom: 0.85rem;
}

.about-intro-en {
  color: #5c6670;
  font-size: 0.95rem;
  line-height: 1.85;
  margin-bottom: 0;
}

.about-philosophy-title {
  margin: 2.2rem 0 1rem;
  color: #1c2420;
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  font-weight: 700;
  line-height: 1.4;
}

.about-philosophy-title span {
  font-weight: 600;
  color: #4a5560;
}

@media (min-width: 700px) {
  .about-intro-panel {
    padding: 0.25rem 0 0.5rem;
  }
}

.about-aside {
  position: sticky;
  top: calc(var(--nav-h) + 1rem);
  padding: 1.35rem 1.25rem 1.45rem;
  border-radius: var(--radius);
  background:
    linear-gradient(160deg, rgba(44, 53, 68, 0.04), transparent 45%),
    #fff;
  border: 1px solid var(--line);
  box-shadow: 0 12px 32px rgba(28, 34, 48, 0.06);
}

.about-aside-head {
  padding-bottom: 1rem;
  margin-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}

.about-aside-title {
  font-family: var(--font-display);
  color: var(--brand);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.55rem;
}

.about-aside-company {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 0.35rem;
}

.about-aside .contact-slogan {
  margin: 0;
  font-size: 0.82rem;
}

.about-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.95rem;
}

.about-contact-list li {
  display: grid;
  gap: 0.35rem;
}

.about-contact-label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  font-weight: 600;
}

.about-contact-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--brand);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.42rem 0.55rem;
  border-radius: 10px;
  background: var(--brand-soft);
  transition: background 0.25s ease, color 0.25s ease;
}

.about-contact-list a:hover {
  background: rgba(196, 138, 90, 0.16);
  color: #a66a3a;
}

.about-contact-list .footer-icon {
  width: 14px;
  height: 14px;
  opacity: 0.85;
}

.service-offer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .service-offer-list {
    grid-template-columns: 1fr 1fr;
  }
}

.service-offer-list li {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
}

.service-offer-list strong {
  color: var(--brand);
  font-size: 1.05rem;
  font-weight: 600;
}

.service-offer-list span {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

/* ---------- 动效 ---------- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes kenburns {
  from {
    transform: scale(1.04) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.12) translate3d(-1.5%, -1%, 0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* ---------- 工具类 ---------- */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.text-center { text-align: center; }

/* ---------- 首页排版增强 ---------- */
body[data-page="home"] .section {
  padding: clamp(3.8rem, 8vw, 5.5rem) 0;
}

body[data-page="home"] .home-about {
  padding: clamp(2.8rem, 5vw, 3.8rem) 0;
}

body[data-page="home"] .lead {
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.9;
  letter-spacing: 0.02em;
}

/* ---------- 首页 · 关于我们 ---------- */
.home-about {
  position: relative;
  overflow: hidden;
}

.home-about::before {
  display: none;
}

.home-about-layout {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.4rem;
  align-items: center;
}

@media (min-width: 960px) {
  .home-about-layout {
    grid-template-columns: 1fr 1fr;
    gap: 1.75rem;
  }
}

.home-about-visual {
  display: block;
}

.home-about-figure {
  position: relative;
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  background: #eceff3;
}

.home-about-figure img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 1.1s var(--ease);
}

.home-about-figure:hover img {
  transform: scale(1.05);
}

.home-about-figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.2rem 1.25rem 1.25rem;
  background: linear-gradient(transparent, rgba(20, 24, 32, 0.78));
  color: #fff;
}

.home-about-caption-en {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  opacity: 0.75;
  margin-bottom: 0.35rem;
}

.home-about-figure strong {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  letter-spacing: 0.06em;
}

.home-about-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: 0.2rem;
}

.home-about-copy .section-head {
  margin-bottom: 0.75rem;
}

.home-about-copy .section-head h2 {
  padding-left: 0;
}

.home-about-copy .section-head h2::before {
  display: none;
}

.home-about-copy .home-quote {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: var(--brand);
  line-height: 1.4;
  letter-spacing: 0.02em;
  margin: 0 0 0.75rem;
  padding-left: 0.85rem;
  border-left: 3px solid var(--orange);
  white-space: nowrap;
}

.home-about-copy .lead {
  color: var(--muted);
  margin-bottom: 1rem;
}

.home-about-points {
  display: grid;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  padding: 0;
}

.home-about-points li {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--ink);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
}

.home-about-points li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.home-about-points span {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--orange);
  min-width: 1.6rem;
}

.home-about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.home-about-btn {
  position: relative;
  overflow: hidden;
  gap: 0.55rem;
  min-height: 48px;
  padding: 0.75rem 1.45rem;
  border-radius: 999px;
  letter-spacing: 0.06em;
  font-weight: 500;
  transition:
    transform 0.35s var(--ease),
    background 0.35s var(--ease),
    color 0.35s var(--ease),
    border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
}

.home-about-btn span {
  position: relative;
  z-index: 1;
}

.home-about-btn-arrow {
  position: relative;
  z-index: 1;
  width: 0.55rem;
  height: 0.55rem;
  border-top: 1.5px solid currentColor;
  border-right: 1.5px solid currentColor;
  transform: rotate(45deg) translateX(0);
  opacity: 0.75;
  transition: transform 0.35s var(--ease), opacity 0.35s ease;
  flex-shrink: 0;
}

.home-about-actions .btn-primary.home-about-btn {
  color: #fff;
  background: var(--brand-mid);
  border: 1px solid var(--brand-mid);
  box-shadow: none;
}

.home-about-actions .btn-primary.home-about-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.4s var(--ease);
  z-index: 0;
}

.home-about-actions .btn-primary.home-about-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(44, 53, 68, 0.22);
}

.home-about-actions .btn-primary.home-about-btn:hover::before {
  transform: scaleX(1);
}

.home-about-actions .btn-primary.home-about-btn:hover .home-about-btn-arrow {
  transform: rotate(45deg) translateX(3px);
  opacity: 1;
}

.home-about-actions .home-about-btn-ghost {
  color: var(--brand);
  background: transparent;
  border: 1px solid rgba(44, 53, 68, 0.28);
  box-shadow: none;
}

.home-about-actions .home-about-btn-ghost::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--brand-soft);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.4s var(--ease);
  z-index: 0;
}

.home-about-actions .home-about-btn-ghost:hover {
  color: var(--brand);
  border-color: var(--brand-mid);
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(44, 53, 68, 0.1);
  background: transparent;
}

.home-about-actions .home-about-btn-ghost:hover::before {
  transform: scaleX(1);
}

.home-about-actions .home-about-btn-ghost:hover .home-about-btn-arrow {
  transform: rotate(45deg) translateX(3px);
  opacity: 1;
}

.home-about-actions .home-about-btn:active {
  transform: translateY(-1px) scale(0.98);
}

.home-services {
  position: relative;
  background: #fff;
}

.home-services-head {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  text-align: center;
}

.home-services-head .section-head {
  margin-bottom: 0;
  margin-inline: auto;
  max-width: 36rem;
  text-align: center;
}

.home-services-head .section-head h2 {
  padding-left: 0;
}

.home-services-head .section-head h2::before {
  display: none;
}

.home-services-more {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--brand);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid rgba(44, 53, 68, 0.25);
  transition: color 0.3s ease, border-color 0.3s ease, gap 0.3s var(--ease);
}

.home-services-more i {
  width: 0.5rem;
  height: 0.5rem;
  border-top: 1.5px solid currentColor;
  border-right: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease);
}

.home-services-more:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
  gap: 0.75rem;
}

.home-services-more:hover i {
  transform: rotate(45deg) translate(2px, -2px);
}

.home-section-more {
  display: flex;
  justify-content: center;
  margin-top: 1.75rem;
}

body[data-page="home"] .preview-feature {
  min-height: 300px;
}

body[data-page="home"] .preview-feature span {
  left: 1.15rem;
  bottom: 1.15rem;
  right: 1.15rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 2.5vw, 1.55rem);
  letter-spacing: 0.08em;
  line-height: 1.2;
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
  text-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

body[data-page="home"] .preview-feature span em {
  font-family: var(--font-en);
  font-style: normal;
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.78;
}

/* ---------- 首页 · 成功案例 ---------- */
.home-cases-head {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  text-align: center;
}

.home-cases-head .section-head {
  margin-bottom: 0;
  margin-inline: auto;
  max-width: 36rem;
  text-align: center;
}

.home-cases-head .section-head h2 {
  padding-left: 0;
}

.home-cases-head .section-head h2::before {
  display: none;
}

.home-cases-head .section-head p {
  margin-inline: auto;
}

.home-cases-more {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--brand);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid rgba(44, 53, 68, 0.25);
  transition: color 0.3s ease, border-color 0.3s ease, gap 0.3s var(--ease);
}

.home-cases-more i {
  width: 0.5rem;
  height: 0.5rem;
  border-top: 1.5px solid currentColor;
  border-right: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease);
}

.home-cases-more:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
  gap: 0.75rem;
}

.home-cases-more:hover i {
  transform: rotate(45deg) translate(2px, -2px);
}

.home-cases-grid {
  display: none;
}

.home-cases-slider {
  position: relative;
  margin-inline: calc((100% - var(--wrap)) / -2);
  padding-inline: max(calc((100% - var(--wrap)) / 2), 1.2rem);
}

.home-cases-viewport {
  overflow: hidden;
  cursor: grab;
  touch-action: pan-y;
  user-select: none;
}

.home-cases-slider.is-dragging .home-cases-viewport {
  cursor: grabbing;
}

.home-cases-track {
  display: flex;
  gap: 1rem;
  will-change: transform;
  transition: transform 0.55s var(--ease);
}

.home-cases-slider.is-dragging .home-cases-track {
  transition: none;
}

.home-case-card {
  position: relative;
  display: block;
  flex: 0 0 auto;
  width: 33.333%;
  min-width: 0;
  aspect-ratio: 3 / 2;
  min-height: 0;
  border-radius: 16px;
  overflow: hidden;
  color: #fff;
  text-decoration: none;
  isolation: isolate;
}

@media (max-width: 980px) {
  .home-case-card {
    width: 50%;
  }
}

@media (max-width: 640px) {
  .home-case-card {
    width: 82%;
  }
}

.home-cases-nav {
  position: absolute;
  top: 50%;
  z-index: 5;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: 1px solid rgba(44, 53, 68, 0.18);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: var(--brand);
  display: grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s, background 0.2s ease, transform 0.2s ease;
  box-shadow: 0 8px 22px rgba(44, 53, 68, 0.12);
}

.home-cases-nav svg {
  width: 18px;
  height: 18px;
}

.home-cases-prev {
  left: max(0.4rem, calc((100% - var(--wrap)) / 2 - 0.2rem));
}

.home-cases-next {
  right: max(0.4rem, calc((100% - var(--wrap)) / 2 - 0.2rem));
}

.home-cases-slider:hover .home-cases-nav,
.home-cases-slider:focus-within .home-cases-nav {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.home-cases-nav:hover {
  background: #fff;
  transform: translateY(-50%) scale(1.05);
}

@media (hover: none) {
  .home-cases-nav {
    opacity: 0.9;
    visibility: visible;
    pointer-events: auto;
  }
}

.home-case-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
  z-index: 0;
  pointer-events: none;
}

.home-case-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(20, 24, 32, 0.08) 20%, rgba(20, 24, 32, 0.78) 100%);
  transition: background 0.4s ease;
  pointer-events: none;
}

.home-case-card:hover img {
  transform: scale(1.08);
}

.home-case-card:hover::after {
  background:
    linear-gradient(180deg, rgba(20, 24, 32, 0.12) 10%, rgba(20, 24, 32, 0.86) 100%);
}

.home-case-meta {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 1.35rem 1.2rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.28rem;
  pointer-events: none;
}

.home-case-meta .en {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  opacity: 0.78;
  font-style: normal;
}

.home-case-meta strong {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.home-case-go {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.55rem;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease), gap 0.35s var(--ease);
}

.home-case-go::after {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-top: 1.5px solid currentColor;
  border-right: 1.5px solid currentColor;
  transform: rotate(45deg);
}

.home-case-card:hover .home-case-go {
  opacity: 0.95;
  transform: translateY(0);
  gap: 0.55rem;
}

/* ---------- 首页 · 联系 CTA ---------- */
.home-faq-list {
  display: grid;
  gap: 0.75rem;
  max-width: 48rem;
  margin: 0 auto;
}

.home-faq-item {
  border-top: 1px solid var(--line);
  padding: 0.85rem 0 1rem;
}

.home-faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--brand);
  font-size: 1.02rem;
  list-style: none;
}

.home-faq-item summary::-webkit-details-marker {
  display: none;
}

.home-faq-item p {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.home-faq-item a {
  color: var(--brand);
}

.home-faq-item a:hover {
  color: var(--orange);
}

.home-cta {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 8vw, 5.5rem) 0;
  background: transparent;
}

.home-cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 38rem;
  margin-inline: auto;
}

.home-cta-inner .en {
  display: block;
  color: var(--orange);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  margin-bottom: 0.65rem;
}

.home-cta-inner h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.7rem, 4vw, 2.35rem);
  color: var(--brand);
  letter-spacing: 0.05em;
  line-height: 1.3;
  margin-bottom: 0.9rem;
}

.home-cta-inner p {
  color: var(--muted);
  font-weight: 300;
  font-size: 0.98rem;
  line-height: 1.85;
  margin-bottom: 1.7rem;
}

.home-cta-btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: #fff;
  background: var(--brand-mid);
  border: 1px solid var(--brand-mid);
  box-shadow: none;
  min-height: 48px;
  padding: 0.75rem 1.55rem;
  letter-spacing: 0.06em;
  font-weight: 500;
  transition:
    transform 0.35s var(--ease),
    background 0.35s ease,
    border-color 0.35s ease;
}

.home-cta-btn span,
.home-cta-btn-arrow {
  position: relative;
  z-index: 1;
}

.home-cta-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.4s var(--ease);
  z-index: 0;
}

.home-cta-btn-arrow {
  width: 0.55rem;
  height: 0.55rem;
  border-top: 1.5px solid currentColor;
  border-right: 1.5px solid currentColor;
  transform: rotate(45deg);
  opacity: 0.8;
  transition: transform 0.35s var(--ease), opacity 0.35s ease;
}

.home-cta-btn:hover {
  transform: translateY(-3px);
  background: var(--brand-mid);
  border-color: var(--brand);
  color: #fff;
}

.home-cta-btn:hover::before {
  transform: scaleX(1);
}

.home-cta-btn:hover .home-cta-btn-arrow {
  transform: rotate(45deg) translateX(3px);
  opacity: 1;
}

body[data-page="home"] .btn {
  letter-spacing: 0.06em;
  font-weight: 500;
  min-height: 48px;
  padding: 0.75rem 1.55rem;
}

@media (max-width: 640px) {
  .hero-content {
    margin-left: 1.2rem;
    margin-right: 1.2rem;
    width: auto;
    max-width: none;
  }

  .hero h1 {
    letter-spacing: 0.04em;
    max-width: none;
  }
}


/* (seo-crawl-nav removed — 主导航已静态输出) */