/* showcase.css
 * 桌面端 1920×1080 主基准，1280×720 为布局 / 粒子视觉基准
 * 通过 CSS 自定义属性 + var(--layout-scale) 做连续响应式缩放
 * 站点统一背景色 #121414
 */

:root {
  --layout-scale: 1;       /* 由 JS 在 resize 时更新 */

  /* 主题色：文字统一纯白，背景近黑 */
  --bg:    #121414;
  --bg-2:  #0a0c0c;
  --text:  #FFFFFF;
  --teal:  #61B89F;
  --line:  rgba(255, 255, 255, 0.20);

  /* 字体基准（思源黑体加粗），固定 px 不随 layout-scale 缩放 */
  --ff: "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC",
        "Microsoft YaHei", -apple-system, BlinkMacSystemFont,
        "Segoe UI", Helvetica, Arial, sans-serif;

  /* 文字字号（自上而下）：20 / 80 / 30 */
  --fs-category: 20px;
  --fs-title:    80px;
  --fs-subtitle: 30px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  width: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--ff);
  font-weight: 700;       /* 思源黑体加粗 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  overflow-x: hidden;
  overflow-y: auto;
  min-height: 100%;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: transparent; border: 0; cursor: pointer; }
ul { list-style: none; margin: 0; padding: 0; }

/* =========================================================
 * 顶部导航 .site-nav
 * 默认透明覆盖在 hero 上，滚动后切换为磨砂背景
 * ========================================================= */
.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(18, 20, 20, 0);
  border-bottom: 1px solid rgba(255, 255, 255, 0);
  transition: background 320ms ease, border-color 320ms ease,
              backdrop-filter 320ms ease;
}
.site-nav.is-scrolled {
  background: rgba(18, 20, 20, 0.78);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom-color: rgba(255, 255, 255, 0.10);
}
.site-nav__inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 18px 7vw;
  display: flex;
  align-items: center;
  gap: 40px;
}
.site-nav__brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-size: 17px;
  letter-spacing: 0.30em;
  color: var(--text);
  text-transform: uppercase;
}
.site-nav__brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--text);
  position: relative;
  align-self: center;
}
.site-nav__brand-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--text);
}
.site-nav__brand small {
  font-size: 11px;
  letter-spacing: 0.42em;
  opacity: 0.55;
  margin-left: 4px;
}
.site-nav__links {
  display: flex;
  gap: 30px;
  margin: 0 auto;
}
.site-nav__links a {
  font-size: 13.5px;
  letter-spacing: 0.06em;
  color: var(--text);
  opacity: 0.78;
  padding: 6px 2px;
  transition: opacity 200ms;
}
.site-nav__links a:hover,
.site-nav__links a.is-active { opacity: 1; }

.site-nav__meta {
  display: flex;
  align-items: center;
  gap: 18px;
}
.site-nav__locale {
  font-size: 12.5px;
  letter-spacing: 0.10em;
  opacity: 0.65;
}
.site-nav__burger {
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--text);
}
.site-nav__burger:hover { background: rgba(255, 255, 255, 0.10); }

/* 抽屉式 nav drawer （简易） */
.site-nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(8, 9, 9, 0.94);
  backdrop-filter: blur(16px);
  display: none;
  flex-direction: column;
  padding: 96px 7vw 32px;
}
.site-nav-drawer.is-open { display: flex; }
.site-nav-drawer a {
  font-size: 28px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text);
}
.site-nav-drawer__close {
  position: absolute;
  top: 24px; right: 7vw;
  font-size: 24px;
}

/* =========================================================
 * 首页 Hero —— 3D 点云舞台（保留上一版的核心样式）
 * ========================================================= */
.stage {
  position: relative;
  width: 100vw;
  height: 100vh;
  min-height: 640px;
  overflow: hidden;
  background: var(--bg);
}

#stageCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  outline: none;
  cursor: grab;            /* 提示模型可拖拽 */
  touch-action: none;      /* 避免移动端拖拽触发页面滚动 */
}
#stageCanvas:active { cursor: grabbing; }

/* —— 左侧文字面板：仅 3 行（整体下移 + 居中）—— */
.text-panel {
  position: absolute;
  left: 7vw;
  top: 28vh;               /* 整体偏中下 */
  z-index: 3;
  opacity: 0;
  transform: translateY(18px);
  will-change: opacity, transform;
  font-family: var(--ff);
  color: var(--text);
  display: flex;             /* 让 hero__order 跟随文字流 */
  flex-direction: column;
  align-items: flex-start;   /* 文字左对齐（桌面端） */
}

.category {
  margin: 0;
  font-size: var(--fs-category);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text);
  text-transform: uppercase;
}

.title-zh {
  margin: 10px 0 0 0;
  font-size: var(--fs-title);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--text);
}

.subtitle-zh {
  margin: 16px 0 0 0;
  font-size: var(--fs-subtitle);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--text);
}

/* —— Hero 滚动提示 & 快捷 CTA —— */
.hero__cta {
  position: absolute;
  left: 50%;
  bottom: 56px;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  font-size: 11.5px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  pointer-events: none;
}
.hero__cta::after {
  content: "";
  width: 1px;
  height: 36px;
  background: linear-gradient(180deg, rgba(255,255,255,.6), transparent);
  animation: hero-cue 2.4s ease-in-out infinite;
}
@keyframes hero-cue {
  0% { transform: translateY(-6px); opacity: 0; }
  40% { opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}
.hero__order {
  /* 桌面端：跟随文字流，在 subtitle 下方（不再 absolute） */
  position: static;
  margin-top: 32px;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 999px;
  color: var(--text);
  font-size: 13px;
  letter-spacing: 0.08em;
  background: rgba(18, 20, 20, 0.20);
  transition: background 200ms, transform 200ms;
  pointer-events: auto;
  text-decoration: none;
}
.hero__order:hover {
  background: rgba(18, 20, 20, 0.55);
  transform: translateY(-1px);
}

/* —— 加载 / 错误 —— */
.loading-state, .error-state {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: grid;
  place-content: center;
  gap: 6px;
  text-align: center;
  background: var(--bg);
  color: var(--text);
  font-family: var(--ff);
}
.loading-state[hidden], .error-state[hidden] { display: none !important; }
.loading-state span:first-child {
  color: var(--text);
  font-size: 64px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.loading-state span:last-child {
  color: rgba(255, 255, 255, 0.45);
  font-size: 11px;
  letter-spacing: 0.30em;
}
.error-state p {
  color: var(--text);
  font-size: 15px;
  margin: 0;
}

/* =========================================================
 * 内容段 .content-block —— Tesla 风格大段块
 * ========================================================= */
.content-block {
  background: var(--bg);
  padding: 140px 7vw;
  position: relative;
}
.content-block--alt {
  background: var(--bg-2);
}
.content-block__inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.content-block--right .content-block__inner {
  grid-template-areas: "media text";
}
.content-block--right .cb-media { grid-area: media; }
.content-block--right .cb-text  { grid-area: text; }
.content-block--left .content-block__inner {
  grid-template-areas: "text media";
}
.content-block--left .cb-media { grid-area: media; }
.content-block--left .cb-text  { grid-area: text; }

.cb-eyebrow {
  font-size: 11px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  opacity: 0.55;
  margin-bottom: 14px;
}
.content-block h2 {
  font-size: 52px;
  font-weight: 700;
  margin: 0 0 18px;
  line-height: 1.15;
  letter-spacing: -0.005em;
}
.content-block p {
  font-size: 16px;
  line-height: 1.75;
  opacity: 0.7;
  margin: 0 0 28px;
  max-width: 520px;
}
.cb-media {
  aspect-ratio: 16 / 9;
  border-radius: 6px;
  background: linear-gradient(135deg, #1a1c1c 0%, #0c0e0e 100%);
  border: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
  overflow: hidden;
  display: grid;
  place-content: center;
}
.cb-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 25%, rgba(97, 184, 159, 0.16), transparent 60%),
    radial-gradient(circle at 75% 70%, rgba(255, 255, 255, 0.06), transparent 60%);
}
.cb-media__label {
  position: relative;
  z-index: 1;
  font-size: 12px;
  letter-spacing: 0.30em;
  text-transform: uppercase;
  opacity: 0.45;
}
.cb-media__hero {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: end stretch;
  padding: 28px;
  z-index: 1;
}
.cb-media__hero strong {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.25;
}
.cb-media__hero em {
  font-style: normal;
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  letter-spacing: 0.18em;
  opacity: 0.6;
  text-transform: uppercase;
}

/* 产品配图变体：cb-media 改成 background-image，覆盖式居中 */
.cb-media--image {
  background-image: var(--cb-bg);
  background-size: cover;
  background-position: center;
}
.cb-media--image::before {
  background:
    linear-gradient(180deg, rgba(18,20,20,0) 30%, rgba(18,20,20,.55) 100%),
    radial-gradient(circle at 30% 25%, rgba(97,184,159,0.10), transparent 60%);
}
.cb-media--image .cb-media__hero {
  background: linear-gradient(180deg, rgba(18,20,20,0) 0%, rgba(18,20,20,.78) 100%);
  place-content: end;
  padding: 24px 28px 28px;
}

/* 产品卡配图 */
.product-card__cover--image {
  background-image: var(--pc-bg);
  background-size: cover;
  background-position: center;
  background-color: #0d0f0f;
}
.product-card__cover--image::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(18,20,20,0) 30%, rgba(18,20,20,.78) 100%),
    radial-gradient(circle at 30% 25%, rgba(97,184,159,0.10), transparent 60%);
  z-index: 0;
}
.product-card__cover--image .product-card__cover-name {
  position: absolute; left: 24px; bottom: 22px; z-index: 1;
  text-shadow: 0 2px 14px rgba(0,0,0,.65);
}
.product-card__cover--image .product-card__cover-tag {
  z-index: 1;
  background: rgba(18,20,20,.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* 首屏右下角 AI 提示 */
.hero__disclaimer {
  position: absolute; right: 28px; bottom: 24px; z-index: 5;
  font-size: 11px; letter-spacing: .10em;
  color: rgba(255,255,255,.40);
  text-align: right; line-height: 1.5;
  pointer-events: none;
  max-width: 320px;
}
.hero__disclaimer strong {
  display: block;
  font-size: 11px; opacity: .8; letter-spacing: .14em;
  margin-bottom: 2px;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 999px;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: background 200ms, border-color 200ms, transform 200ms;
}
.link-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.85);
}
.link-btn--primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.link-btn--primary:hover {
  background: transparent;
  color: var(--text);
}

/* —— 数据三栏 —— */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 32px;
}
.stat {
  border-left: 1px solid var(--line);
  padding: 6px 0 6px 18px;
}
.stat__num {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.1;
}
.stat__unit {
  font-size: 16px;
  opacity: 0.7;
  margin-left: 4px;
}
.stat__label {
  font-size: 12px;
  letter-spacing: 0.20em;
  opacity: 0.55;
  margin-top: 8px;
  text-transform: uppercase;
}

/* =========================================================
 * 新闻摘要段
 * ========================================================= */
.news-section__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  max-width: 1280px;
  margin: 0 auto 36px;
  gap: 24px;
  flex-wrap: wrap;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  max-width: 1280px;
  margin: 0 auto;
}
.news-card {
  display: block;
  background: var(--bg-2);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 280ms ease, border-color 280ms ease;
  text-decoration: none;
  color: var(--text);
}
.news-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.18);
}
.news-card__cover {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #161b1a, #0b0e0e);
  position: relative;
  overflow: hidden;
}
.news-card__cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 25% 30%, rgba(97, 184, 159, 0.20), transparent 60%),
    radial-gradient(circle at 80% 75%, rgba(255, 255, 255, 0.08), transparent 60%);
}
.news-card__cover-tag {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 1;
  font-size: 10.5px;
  letter-spacing: 0.30em;
  padding: 4px 10px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  text-transform: uppercase;
}

/* 新闻配图变体：news-card__cover 改成 background-image，覆盖式居中 */
.news-card__cover--image {
  background-image: var(--nc-bg);
  background-size: cover;
  background-position: center;
  background-color: #0b0e0e;
}
.news-card__cover--image::before {
  background:
    linear-gradient(180deg, rgba(18,20,20,0) 35%, rgba(18,20,20,.75) 100%),
    radial-gradient(circle at 30% 25%, rgba(97,184,159,0.10), transparent 60%);
}
.news-card__cover--image .news-card__cover-tag {
  background: rgba(18,20,20,.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.news-card__body { padding: 22px 22px 26px; }
.news-card__meta {
  font-size: 11px;
  letter-spacing: 0.18em;
  opacity: 0.5;
  text-transform: uppercase;
}
.news-card__title {
  font-size: 18px;
  font-weight: 700;
  margin: 12px 0 8px;
  line-height: 1.4;
}
.news-card__excerpt {
  font-size: 13.5px;
  line-height: 1.6;
  opacity: 0.65;
}

/* =========================================================
 * 全站 Footer
 * ========================================================= */
.site-footer {
  background: #07090a;
  padding: 80px 7vw 28px;
  color: rgba(255, 255, 255, 0.70);
}
.site-footer__inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 40px;
  max-width: 1440px;
  margin: 0 auto;
}
.site-footer h4 {
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  margin: 0 0 18px;
  color: var(--text);
  opacity: 0.85;
  font-weight: 700;
}
.site-footer li + li { margin-top: 10px; }
.site-footer a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
  transition: color 180ms;
}
.site-footer a:hover { color: var(--text); }
.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  margin-top: 56px;
  padding-top: 22px;
  max-width: 1440px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.45);
}
.site-footer__bottom a { color: rgba(255, 255, 255, 0.55); }
.site-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  letter-spacing: 0.30em;
  margin-bottom: 22px;
  text-transform: uppercase;
  color: var(--text);
}
.site-footer__brand-mark {
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 2px solid var(--text);
  position: relative;
}
.site-footer__brand-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--text);
}

/* =========================================================
 * 子页面通用布局
 * ========================================================= */
.page-hero {
  padding: 180px 7vw 80px;
  background: var(--bg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.page-hero__eyebrow {
  font-size: 12px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  opacity: 0.55;
  margin-bottom: 16px;
}
.page-hero h1 {
  font-size: 64px;
  margin: 0 0 18px;
  line-height: 1.10;
  letter-spacing: -0.005em;
}
.page-hero p {
  font-size: 16px;
  line-height: 1.75;
  opacity: 0.70;
  max-width: 720px;
  margin: 0;
}
.page {
  padding: 96px 7vw 120px;
}
.page__inner {
  max-width: 1280px;
  margin: 0 auto;
}

/* 产品卡片网格 */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}
.product-card {
  display: block;
  background: var(--bg-2);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 280ms, border-color 280ms;
  color: var(--text);
}
.product-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.18); }
.product-card__cover {
  aspect-ratio: 4/3;
  background:
    radial-gradient(circle at 30% 25%, rgba(97, 184, 159, 0.18), transparent 60%),
    linear-gradient(135deg, #1a1c1c, #0d0f0f);
  position: relative;
}
.product-card__cover-name {
  position: absolute;
  bottom: 24px; left: 24px; right: 24px;
  font-size: 28px;
  letter-spacing: 0.01em;
  font-weight: 700;
  line-height: 1.15;
}
.product-card__cover-tag {
  position: absolute;
  top: 18px; left: 18px;
  font-size: 10.5px;
  letter-spacing: 0.30em;
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 999px;
  text-transform: uppercase;
}
.product-card__body { padding: 22px 24px 26px; }
.product-card__body p { margin: 0 0 14px; opacity: 0.65; font-size: 13.5px; line-height: 1.6; }
.product-card__price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 4px 0 14px;
  font-weight: 700;
}
.product-card__price strong { font-size: 22px; }
.product-card__price small { font-size: 12px; opacity: 0.55; letter-spacing: 0.10em; }
.product-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  letter-spacing: 0.06em;
  border-bottom: 1px solid rgba(255,255,255,.45);
  padding-bottom: 4px;
}

/* 新闻列表 */
.news-list {
  display: grid;
  gap: 20px;
}
.news-list .news-card {
  display: grid;
  grid-template-columns: 1.1fr 1.5fr;
  align-items: stretch;
}
.news-list .news-card__cover {
  aspect-ratio: auto;
  min-height: 220px;
}
.news-list .news-card__body { padding: 32px 36px; }

/* 文章详情 / 法律文档正文 */
.prose {
  max-width: 880px;
  margin: 0 auto;
  font-size: 15px;
  line-height: 1.85;
  opacity: 0.78;
}
.prose h2 {
  font-size: 22px;
  margin: 56px 0 18px;
  opacity: 1;
  letter-spacing: 0.02em;
}
.prose h3 {
  font-size: 17px;
  margin: 36px 0 12px;
  opacity: 0.95;
  letter-spacing: 0.04em;
}
.prose p { margin: 14px 0; }
.prose ul, .prose ol { padding-left: 22px; margin: 14px 0; list-style: disc; }
.prose li + li { margin-top: 6px; }

/* =========================================================
 * 全局触控 / 安全区（移动端友好）
 * ========================================================= */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior-y: none;
}
a, button {
  touch-action: manipulation;
  -webkit-touch-callout: none;
}

/* =========================================================
 * 响应式
 * 断点策略：
 *   ≤ 1024px — iPad 横屏 / 小桌面（收紧间距）
 *   ≤ 768px  — iPad 竖屏 / 大手机（content-block 单列）
 *   ≤ 480px  — 手机竖屏（全部单列 + 字号紧凑）
 * ========================================================= */

/* —— ≤ 1024px：iPad 横屏 + 小桌面 —— */
@media (max-width: 1024px) {
  .content-block { padding: 110px 6vw; }
  .content-block__inner { gap: 56px; }
  .content-block h2 { font-size: 42px; }
  .cb-media { aspect-ratio: 16/10; }

  .news-section__head { padding: 0 6vw; gap: 16px; }
  .news-grid, .product-grid { gap: 20px; }

  .page-hero { padding: 160px 6vw 70px; }
  .page-hero h1 { font-size: 52px; }
  .page { padding: 80px 6vw 100px; }

  .site-footer { padding: 64px 6vw 28px; }
  .site-footer__inner { gap: 32px; }
  .news-list .news-card__body { padding: 28px 28px; }

  .stat__num { font-size: 38px; }
}

/* —— ≤ 768px：iPad 竖屏 / 大手机 —— */
@media (max-width: 768px) {
  .site-nav__inner {
    padding: 14px 5vw;
    justify-content: space-between;   /* brand 左、burger 右 */
  }
  .site-nav__links { display: none; }
  .site-nav__locale { display: none; }
  .site-nav__brand small { display: none; }
  .site-nav__meta { gap: 0; }
  .site-nav__burger {
    width: 40px; height: 40px;
    font-size: 22px;
  }

  /* 移动端不再支持拖拽旋转 → 让 canvas 允许垂直滚动 */
  #stageCanvas { touch-action: pan-y; }

  .text-panel {
    left: 5vw;
    right: 5vw;
    top: calc(24vh - 20px);   /* 上移 20px */
    bottom: 106px;            /* 撑到屏幕底部 106px，让 hero__order 推到该位置 */
    /* flex column 已在 base 定义 */
  }
  .hero__order {
    /* 移动端：在 text-panel 内居中（margin-top:auto 推到容器底部） */
    margin-top: auto;
    align-self: center;
    /* bottom: 96px + 上移 10px = 106px（由 text-panel bottom 控制） */
  }
  .hero__order:hover { transform: translateY(-1px); }
  .hero__cta { bottom: 30px; }

  .content-block { padding: 88px 5vw; }
  .content-block__inner { grid-template-columns: 1fr; gap: 40px; }
  .content-block--right .content-block__inner,
  .content-block--left  .content-block__inner {
    grid-template-areas: "text" "media";
  }
  .content-block h2 { font-size: 34px; }
  .content-block p { font-size: 15px; }

  .cb-media { aspect-ratio: 16/10; }
  .cb-media__hero strong { font-size: 26px; }

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

  .news-list .news-card { grid-template-columns: 1fr; }
  .news-list .news-card__cover { min-height: 200px; }
  .news-list .news-card__body { padding: 24px 24px 28px; }

  .stats { gap: 20px; }
  .stat__num { font-size: 34px; }

  .page-hero { padding: 140px 5vw 56px; }
  .page-hero h1 { font-size: 42px; }

  .product-card__cover-name { font-size: 22px; left: 20px; bottom: 18px; right: 20px; }
  .product-card__body { padding: 20px 20px 22px; }

  .site-footer { padding: 56px 5vw 24px; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }

  .hero__disclaimer { right: 16px; bottom: 16px; max-width: 200px; font-size: 10px; }

  .product-grid > #plur-t2,
  .product-grid > #plur-s,
  .product-grid > #plur-x { scroll-margin-top: 80px; }
}

/* —— ≤ 480px：手机竖屏 —— */
@media (max-width: 480px) {
  :root { --fs-title: 44px; --fs-subtitle: 20px; --fs-category: 13px; }
  .title-zh { letter-spacing: 0; }

  .site-nav__inner { padding: 12px 4vw; }
  .site-nav__brand { font-size: 14px; }
  .site-nav__brand small { display: none; }
  .site-nav__burger {
    width: 40px; height: 40px;
    font-size: 22px;
    border: 1px solid rgba(255, 255, 255, 0.18);
  }

  .text-panel {
    left: 5vw;
    right: 5vw;
    top: calc(22vh - 20px);   /* 上移 20px */
    bottom: 98px;             /* 撑到屏幕底部 98px，hero__order 推到该位置 */
  }
  .text-panel .subtitle-zh { margin-top: 12px; }

  .hero__order {
    /* 移动端：在 text-panel 内居中（margin-top:auto 推到容器底部） */
    margin-top: auto;
    align-self: center;
    padding: 10px 22px; font-size: 12px;
    /* bottom: 88px + 上移 10px = 98px（由 text-panel bottom 控制） */
  }
  .hero__order:hover { transform: translateY(-1px); }
  .hero__cta {
    bottom: 24px;
    font-size: 10px; letter-spacing: 0.28em;
  }
  .hero__cta::after { height: 28px; }
  .hero__disclaimer { display: none; }   /* 太挤，给用户留呼吸空间 */

  .content-block { padding: 72px 5vw; }
  .content-block h2 { font-size: 28px; line-height: 1.18; }
  .content-block p { font-size: 14px; line-height: 1.7; }
  .cb-eyebrow { font-size: 10px; letter-spacing: 0.30em; }
  .content-block__inner { gap: 32px; }

  .cb-media { aspect-ratio: 16/10; }
  .cb-media__hero strong { font-size: 22px; }
  .cb-media__hero em { font-size: 11.5px; margin-top: 4px; }

  .stats { grid-template-columns: 1fr; gap: 14px; }
  .stat { padding: 4px 0 4px 14px; }
  .stat__num { font-size: 30px; }
  .stat__label { font-size: 11px; letter-spacing: 0.16em; }

  .product-grid, .news-grid { grid-template-columns: 1fr; }
  .news-card__title { font-size: 16px; }
  .news-card__excerpt { font-size: 13px; }
  .news-card__body { padding: 18px 18px 22px; }

  .news-list .news-card__cover { min-height: 180px; }

  .product-card__cover-name { font-size: 20px; }
  .product-card__price strong { font-size: 20px; }

  .page-hero { padding: 120px 5vw 48px; }
  .page-hero h1 { font-size: 32px; line-height: 1.18; }
  .page-hero p { font-size: 14px; }
  .page { padding: 64px 5vw 88px; }

  .site-footer__inner { grid-template-columns: 1fr; gap: 28px; }
  .site-footer { padding: 48px 5vw 24px; }
  .site-footer__bottom { flex-direction: column; gap: 6px; font-size: 11px; }

  .link-btn { padding: 10px 18px; font-size: 12px; }
  .loading-state span:first-child { font-size: 48px; }
  .loading-state span:last-child { font-size: 10px; letter-spacing: 0.24em; }
}

/* —— 安全区（iPhone 刘海 / 底部 home indicator）—— */
@supports (padding: max(0px)) {
  .site-nav__inner { padding-left: max(5vw, env(safe-area-inset-left)); padding-right: max(5vw, env(safe-area-inset-right)); }
  .site-footer { padding-bottom: max(24px, env(safe-area-inset-bottom)); }
}

/* —— 横屏手机适配：避免 hero 内容被横屏高度限制挤变形 —— */
@media (max-height: 500px) and (orientation: landscape) {
  .text-panel { top: 18vh; }
  .hero__cta { display: none; }
  .hero__order { bottom: 20px; }
}

/* —— prefers-reduced-motion —— */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}