/* 预览版样式：独立于主站的分层 CSS，可随时改动或删除 */

:root {
  --ink: #0b0d10;
  --body: #4a4d52;
  --muted: #6b7078;
  --accent: #3760ea;
  --accent-dark: #2b4fd0;
  --line: #e8eaef;
  --tint: #f6f7fb;
  --paper: #ffffff;
  --dark: #101114;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --pad: clamp(20px, 4vw, 48px);
  --section-y: clamp(72px, 9vw, 148px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 { margin: 0; color: var(--ink); font-weight: 600; line-height: 1.25; }
p { margin: 0; }

.pv-wrap { width: 100%; max-width: 1320px; margin: 0 auto; padding: 0 var(--pad); }

/* 顶部预览提示条 */
.pv-ribbon {
  padding: 7px var(--pad);
  background: #f2c14e;
  color: #3a2c05;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-align: center;
}

/* 头部 */
.pv-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  background: rgba(8, 10, 14, 0.55);
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}
.pv-header.is-solid {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom-color: var(--line);
}
.pv-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 48px);
  height: 74px;
}
.pv-logo {
  display: grid;
  color: #fff;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.15;
}
.pv-logo span {
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.26em;
  opacity: 0.72;
}
.pv-header.is-solid .pv-logo { color: var(--ink); }
.pv-logo--inv { color: #fff; }

.pv-nav { display: flex; gap: clamp(14px, 2vw, 30px); margin-left: auto; }
.pv-nav a { flex: 0 0 auto; white-space: nowrap; }
.pv-nav a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.88);
  transition: color 0.2s ease;
}
.pv-nav a:hover { color: #fff; }
.pv-header.is-solid .pv-nav a { color: var(--body); }
.pv-header.is-solid .pv-nav a:hover { color: var(--accent); }

/* 语言切换（深色首屏上为白字，滚动态切换为深色字） */
.pv-nav .lang-toggle {
  padding: 6px 14px;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1;
  color: #fff;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.pv-nav .lang-toggle:hover { border-color: #fff; }
.pv-header.is-solid .pv-nav .lang-toggle { color: var(--ink); border-color: #d3d8e4; }
.pv-header.is-solid .pv-nav .lang-toggle:hover { border-color: var(--accent); color: var(--accent); }

.pv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.pv-btn--primary { background: var(--accent); color: #fff; }
.pv-btn--primary:hover { background: var(--accent-dark); }
.pv-btn--ghost { background: rgba(255, 255, 255, 0.1); color: #fff; border-color: rgba(255, 255, 255, 0.4); }
.pv-btn--ghost:hover { background: #fff; color: var(--ink); }
.pv-btn--lg { padding: 14px 28px; font-size: 0.96rem; }

.pv-header .pv-btn--primary { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.4); }
.pv-header.is-solid .pv-btn--primary { background: var(--accent); border-color: var(--accent); }
.pv-header.is-solid .pv-btn--primary:hover { background: var(--accent-dark); }

.pv-burger {
  display: none;
  width: 40px;
  height: 40px;
  margin-left: auto;
  padding: 0;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  cursor: pointer;
}
.pv-burger span { display: block; width: 16px; height: 1.5px; margin: 4px auto; background: #fff; }
.pv-header.is-solid .pv-burger { border-color: var(--line); }
.pv-header.is-solid .pv-burger span { background: var(--ink); }

/* 首屏 */
.pv-hero { position: relative; min-height: 94vh; display: flex; align-items: flex-end; overflow: hidden; background: #0d1013; }
.pv-hero__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.pv-hero__shade {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 10, 14, 0.78) 0%, rgba(8, 10, 14, 0.2) 40%, rgba(8, 10, 14, 0.88) 100%);
}
.pv-hero__inner { position: relative; z-index: 2; padding-bottom: clamp(64px, 9vw, 128px); color: #fff; }
.pv-hero__eyebrow {
  margin-bottom: 20px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.92);
}
.pv-hero h1 {
  max-width: 16em;
  font-size: clamp(2.4rem, 5.6vw, 4.6rem);
  line-height: 1.16;
  color: #fff;
  letter-spacing: 0;
}
.pv-hero__lead {
  max-width: 600px;
  margin-top: 24px;
  font-size: clamp(0.98rem, 1.1vw, 1.1rem);
  color: rgba(255, 255, 255, 0.82);
}
.pv-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.pv-hero__scroll {
  position: absolute;
  left: 50%; bottom: 26px;
  width: 22px; height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 999px;
  transform: translateX(-50%);
}
.pv-hero__scroll span {
  display: block; width: 3px; height: 8px; margin: 7px auto 0;
  background: rgba(255, 255, 255, 0.85); border-radius: 999px;
  animation: pv-scroll 1.8s ease-in-out infinite;
}
@keyframes pv-scroll {
  0%, 100% { transform: translateY(0); opacity: 1; }
  60% { transform: translateY(12px); opacity: 0.2; }
}
@media (prefers-reduced-motion: reduce) { .pv-hero__scroll span { animation: none; } }

/* 指标带 */
.pv-metrics { border-bottom: 1px solid var(--line); background: var(--paper); }
.pv-metrics__inner {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}
.pv-metrics__inner > div {
  padding: 34px 22px;
  border-left: 1px solid var(--line);
}
.pv-metrics__inner > div:first-child { border-left: 0; padding-left: 0; }
.pv-metrics strong { display: block; font-size: 1.5rem; font-weight: 600; color: var(--accent); }
.pv-metrics span { display: block; margin-top: 6px; font-size: 0.82rem; color: var(--muted); }

/* 宣言 */
.pv-manifesto { padding: var(--section-y) 0; border-bottom: 1px solid var(--line); }
.pv-manifesto h2 {
  max-width: 20ch;
  font-size: clamp(1.9rem, 3.6vw, 3.1rem);
  line-height: 1.3;
}
.pv-manifesto__cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 64px);
  max-width: 900px;
  margin-top: clamp(32px, 4vw, 56px);
  margin-left: auto;
}

/* 特性区块 */
.pv-feature { padding: var(--section-y) 0; }
.pv-feature--tint { background: var(--tint); }
.pv-feature__head {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: clamp(20px, 3vw, 48px);
  padding-bottom: clamp(28px, 3.4vw, 52px);
  border-bottom: 1px solid var(--line);
}
.pv-feature--tint .pv-feature__head { border-bottom-color: #e2e6f0; }
.pv-label {
  padding-top: 8px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.15em;
  color: var(--accent);
}
.pv-label--inv { color: #8fa9ff; }
.pv-feature__head h2 {
  max-width: 22ch;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
}
.pv-feature__head p { max-width: 62ch; margin-top: 18px; }

.pv-spec-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  max-width: 620px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}
.pv-feature--tint .pv-spec-list { background: #e2e6f0; border-color: #e2e6f0; }
.pv-spec-list li { display: grid; gap: 3px; padding: 16px 18px; background: var(--paper); }
.pv-spec-list span { font-size: 0.78rem; color: var(--muted); }
.pv-spec-list strong { font-size: 1.02rem; font-weight: 600; color: var(--ink); }

/* 与正文栏对齐，不做整幅出血：边缘出血时圆角贴在视口上会显得突兀 */
.pv-figure {
  width: min(1320px, calc(100% - var(--pad) * 2));
  margin: clamp(32px, 4vw, 56px) auto 0;
}
.pv-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 6px;
  background: var(--tint);
}
.pv-figure figcaption { margin-top: 14px; font-size: 0.84rem; color: var(--muted); }

/* 精度数据 */
.pv-grid-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(32px, 4vw, 56px);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}
.pv-grid-stats > div { padding: 26px 22px; background: var(--paper); }
.pv-grid-stats strong { display: block; font-size: 1.6rem; font-weight: 600; color: var(--ink); }
.pv-grid-stats span { display: block; margin-top: 6px; font-size: 0.84rem; color: var(--muted); }

/* 材料卡片 */
.pv-cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: clamp(32px, 4vw, 56px);
}
.pv-card {
  padding: 26px 24px 22px;
  background: var(--paper);
  border: 1px solid #e2e6f0;
  border-radius: 6px;
}
.pv-card__dot { display: block; width: 12px; height: 12px; margin-bottom: 16px; border-radius: 999px; }
.pv-card__dot--grey { background: #8b93a3; }
.pv-card__dot--orange { background: #e2803c; }
.pv-card__dot--mint { background: #4bb39a; }
.pv-card__dot--clear { background: #7cb7e8; }
.pv-card h4 { font-size: 1.06rem; }
.pv-card > p { margin-top: 6px; font-size: 0.86rem; color: var(--muted); }
.pv-card dl { display: grid; gap: 9px; margin: 20px 0 0; }
.pv-card dl > div { display: flex; justify-content: space-between; gap: 12px; padding-top: 9px; border-top: 1px solid var(--line); }
.pv-card dt { font-size: 0.8rem; color: var(--muted); }
.pv-card dd { margin: 0; font-size: 0.86rem; font-weight: 600; color: var(--ink); text-align: right; }

.pv-note {
  max-width: 78ch;
  margin-top: 26px;
  padding-left: 16px;
  border-left: 2px solid var(--accent);
  font-size: 0.86rem;
  color: var(--muted);
}

/* 深色：表面处理 */
.pv-dark { padding: var(--section-y) 0; background: var(--dark); color: #b9bec8; }
.pv-dark__title { max-width: 22ch; margin-top: 16px; font-size: clamp(1.7rem, 3.2vw, 2.8rem); color: #fff; }
.pv-dark__lead { max-width: 62ch; margin-top: 18px; }
.pv-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: clamp(36px, 4.4vw, 64px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.pv-steps li { padding: 26px 22px 30px; border-left: 1px solid rgba(255, 255, 255, 0.14); }
.pv-steps li:first-child { border-left: 0; padding-left: 0; }
.pv-steps__no { font-family: var(--mono); font-size: 0.76rem; color: #8fa9ff; }
.pv-steps h3 { margin-top: 14px; font-size: 1.1rem; color: #fff; }
.pv-steps p { margin-top: 8px; font-size: 0.88rem; }

/* 设计服务流程 */
.pv-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: clamp(32px, 4vw, 56px);
}
.pv-flow > div { padding: 26px 22px; background: var(--tint); border-radius: 6px; }
.pv-flow span { font-family: var(--mono); font-size: 0.76rem; color: var(--accent); }
.pv-flow strong { display: block; margin-top: 12px; font-size: 1.02rem; color: var(--ink); }
.pv-flow p { margin-top: 6px; font-size: 0.86rem; color: var(--muted); }

/* 联系 */
.pv-contact { padding: var(--section-y) 0; background: var(--tint); border-top: 1px solid var(--line); }
.pv-contact__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 520px);
  gap: clamp(32px, 5vw, 88px);
}
.pv-contact h2 { max-width: 18ch; margin-top: 16px; font-size: clamp(1.7rem, 3.2vw, 2.7rem); }
.pv-contact__lead { max-width: 48ch; margin-top: 18px; }
.pv-contact__info { display: grid; gap: 1px; margin: 32px 0 0; }
.pv-contact__info > div { display: flex; gap: 16px; padding-top: 12px; border-top: 1px solid #dde2ee; }
.pv-contact__info dt { min-width: 76px; font-size: 0.86rem; color: var(--muted); }
.pv-contact__info dd { margin: 0; font-size: 0.92rem; color: var(--ink); font-weight: 500; }
.pv-contact__qr {
  display: flex;
  align-items: center;
  gap: 18px;
  width: fit-content;
  max-width: 100%;
  margin: 30px 0 0;
  padding: 14px 18px 14px 14px;
  background: var(--paper);
  border: 1px solid #e2e6f0;
  border-radius: 8px;
}
.pv-contact__qr img { display: block; width: 152px; height: 152px; object-fit: contain; background: #fff; }
.pv-contact__qr figcaption { display: grid; gap: 6px; max-width: 24ch; }
.pv-contact__qr strong { color: var(--ink); font-size: 0.96rem; }
.pv-contact__qr span { color: var(--muted); font-size: 0.84rem; line-height: 1.6; }

.pv-form {
  display: grid;
  gap: 16px;
  padding: clamp(24px, 3vw, 36px);
  background: var(--paper);
  border: 1px solid #e2e6f0;
  border-radius: 8px;
}
.pv-form label { display: grid; gap: 8px; font-size: 0.84rem; color: var(--muted); }
.pv-form input,
.pv-form select,
.pv-form textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 0.94rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid #dde2ee;
  border-radius: 6px;
}
.pv-form input:focus,
.pv-form select:focus,
.pv-form textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.pv-form__note { font-size: 0.8rem; color: var(--muted); }
.pv-form__note.is-done { color: var(--accent); font-weight: 600; }

/* 页脚 */
.pv-footer { padding: clamp(48px, 5vw, 80px) 0 28px; background: var(--dark); color: #9aa1ab; }
.pv-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  gap: clamp(32px, 5vw, 80px);
  padding-bottom: clamp(32px, 4vw, 56px);
}
.pv-footer__brand p { max-width: 34ch; margin-top: 16px; font-size: 0.88rem; }
.pv-footer__cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.pv-footer__cols h4 { font-size: 0.86rem; color: #fff; }
.pv-footer__cols a { display: block; margin-top: 10px; font-size: 0.88rem; transition: color 0.2s ease; }
.pv-footer__cols a:hover { color: #fff; }
.pv-footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.8rem;
}

/* 滚动入场 */
.pv-reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.pv-reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .pv-reveal { opacity: 1; transform: none; transition: none; }
}

/* 响应式 */
@media (max-width: 1220px) {
  .pv-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pv-nav { display: none; }
  .pv-burger { display: block; }
  .pv-header .pv-btn--primary { display: none; }
  .pv-contact__inner { grid-template-columns: minmax(0, 1fr); }
  body.pv-nav-open .pv-nav {
    display: grid;
    position: absolute;
    inset: 74px var(--pad) auto;
    gap: 14px;
    padding: 20px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 18px 40px rgba(12, 16, 24, 0.12);
  }
  body.pv-nav-open .pv-nav a { color: var(--body); }
}

@media (max-width: 900px) {
  .pv-feature__head { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .pv-label { padding-top: 0; }
  .pv-metrics__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pv-metrics__inner > div { border-left: 1px solid var(--line); padding: 24px 18px; }
  .pv-metrics__inner > div:nth-child(odd) { border-left: 0; padding-left: 0; }
  .pv-grid-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pv-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pv-steps li { border-left: 1px solid rgba(255, 255, 255, 0.14); padding-left: 20px; }
  .pv-steps li:nth-child(odd) { border-left: 0; padding-left: 0; }
  .pv-steps li:nth-child(n + 3) { border-top: 1px solid rgba(255, 255, 255, 0.14); }
  .pv-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pv-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .pv-manifesto__cols { grid-template-columns: minmax(0, 1fr); margin-left: 0; }
}

@media (max-width: 640px) {
  .pv-hero { min-height: 88vh; }
  .pv-hero h1 { font-size: clamp(2rem, 9vw, 2.6rem); }
  .pv-cards { grid-template-columns: minmax(0, 1fr); }
  .pv-grid-stats { grid-template-columns: minmax(0, 1fr); }
  .pv-steps { grid-template-columns: minmax(0, 1fr); }
  .pv-steps li { border-left: 0; padding-left: 0; border-top: 1px solid rgba(255, 255, 255, 0.14); }
  .pv-steps li:first-child { border-top: 0; }
  .pv-flow { grid-template-columns: minmax(0, 1fr); }
  .pv-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pv-footer__bottom { flex-direction: column; }
  .pv-hero__actions .pv-btn { flex: 1 1 100%; }
}

/* ============ 加厚内容后的补充样式 ============ */

.pv-sr {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* 首屏数据条 */
.pv-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 56px);
  margin: 40px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}
.pv-hero__facts strong { display: block; font-size: 1.24rem; font-weight: 600; color: #fff; }
.pv-hero__facts span { display: block; margin-top: 2px; font-size: 0.8rem; color: rgba(255, 255, 255, 0.82); }

/* 宣言里的标签 */
.pv-manifesto .pv-label { display: block; margin-bottom: 20px; padding-top: 0; }

/* 应用场景 */
.pv-scenarios {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: clamp(32px, 4vw, 56px);
}
.pv-scenarios article {
  display: flex;
  flex-direction: column;
  padding: 26px 24px;
  background: var(--paper);
  border: 1px solid #e2e6f0;
  border-radius: 6px;
}
.pv-scenarios__no { font-family: var(--mono); font-size: 0.74rem; color: var(--accent); }
.pv-scenarios h3 { margin-top: 14px; font-size: 1.08rem; }
.pv-scenarios > article > p { margin-top: 10px; font-size: 0.9rem; }
.pv-scenarios ul {
  display: grid;
  gap: 7px;
  margin: auto 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  font-size: 0.84rem;
  color: var(--muted);
}
.pv-scenarios ul { margin-top: 20px; }
.pv-scenarios li { display: flex; gap: 9px; }
.pv-scenarios li::before {
  content: "";
  flex: 0 0 auto;
  width: 5px; height: 5px;
  margin-top: 9px;
  border-radius: 999px;
  background: var(--accent);
}

/* 制造能力：编号列表 */
.pv-capability {
  display: grid;
  gap: 0;
  margin-top: clamp(28px, 3.4vw, 48px);
  border-top: 1px solid var(--line);
}
.pv-capability article {
  display: grid;
  grid-template-columns: 56px minmax(0, 240px) minmax(0, 1fr);
  gap: 0 clamp(20px, 3vw, 40px);
  padding: clamp(24px, 2.6vw, 36px) 0;
  border-bottom: 1px solid var(--line);
}
.pv-capability__no { font-family: var(--mono); font-size: 0.8rem; color: var(--accent); padding-top: 5px; }
.pv-capability h3 { font-size: 1.1rem; }
.pv-capability__no { grid-column: 1; grid-row: 1; }
.pv-capability h3 { grid-column: 2; grid-row: 1; }
/* 说明与要点都放在第三列，否则要点会被自动塞进 56px 宽的编号列 */
.pv-capability > article > p { grid-column: 3; grid-row: 1; max-width: 68ch; }
.pv-capability ul { grid-column: 3; grid-row: 2; max-width: 68ch; }
.pv-capability ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.84rem;
  color: var(--muted);
}
.pv-capability li { display: flex; gap: 8px; }
.pv-capability li::before { content: "·"; color: var(--accent); }

/* 对比表 */
.pv-table-wrap { margin-top: clamp(28px, 3.4vw, 48px); overflow-x: auto; }
.pv-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 0.9rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.pv-table th, .pv-table td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.pv-table thead th { font-size: 0.84rem; color: var(--muted); font-weight: 600; background: #fbfcff; }
.pv-table tbody th { font-weight: 500; color: var(--muted); font-size: 0.86rem; }
.pv-table tr:last-child th, .pv-table tr:last-child td { border-bottom: 0; }
.pv-table .is-highlight { background: rgba(55, 96, 234, 0.05); color: var(--ink); font-weight: 600; }
.pv-table thead .is-highlight { color: var(--accent); }

/* 工艺图集 */
.pv-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: clamp(32px, 4vw, 56px);
}
.pv-gallery figure { margin: 0; }
.pv-gallery img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 6px;
  background: var(--tint);
}
.pv-gallery figcaption { margin-top: 12px; font-size: 0.84rem; color: var(--muted); }

/* 八道工序 */
.pv-process {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: clamp(32px, 4vw, 56px) 0 0;
  padding: 0;
  list-style: none;
}
.pv-process li {
  padding: 24px 22px;
  background: var(--paper);
  border: 1px solid #e2e6f0;
  border-radius: 6px;
}
.pv-process__no { font-family: var(--mono); font-size: 0.74rem; color: var(--accent); }
.pv-process h3 { margin-top: 12px; font-size: 1.02rem; }
.pv-process p { margin-top: 8px; font-size: 0.86rem; }
.pv-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.pv-chips span {
  padding: 4px 9px;
  background: var(--tint);
  border: 1px solid #e2e6f0;
  border-radius: 999px;
  font-size: 0.74rem;
  color: var(--muted);
}

/* 案例四宫格 */
.pv-cases {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: clamp(32px, 4vw, 56px);
}
.pv-cases figure { margin: 0; background: var(--paper); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.pv-cases img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.pv-cases figcaption { padding: 22px 22px 24px; }
.pv-cases h3 { font-size: 1.08rem; }
.pv-cases p { margin-top: 10px; font-size: 0.9rem; }
.pv-cases ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 18px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--muted);
}
.pv-cases ul strong { color: var(--ink); font-weight: 600; margin-right: 4px; }

/* FAQ */
.pv-faq { margin-top: clamp(28px, 3.4vw, 48px); border-top: 1px solid var(--line); }
.pv-faq details { border-bottom: 1px solid var(--line); }
.pv-faq summary {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 4px;
  font-size: 1.04rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}
.pv-faq summary::-webkit-details-marker { display: none; }
.pv-faq summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--accent);
  transition: transform 0.2s ease;
}
.pv-faq details[open] summary::after { content: "−"; }
.pv-faq details > p { max-width: 82ch; padding: 0 4px 26px; font-size: 0.94rem; }

/* 动态 */
.pv-news {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: clamp(32px, 4vw, 56px);
}
.pv-news a { display: block; }
.pv-news img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 6px;
  background: var(--paper);
}
.pv-news__tag {
  display: inline-block;
  margin: 16px 0 8px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.pv-news h3 { font-size: 1.06rem; transition: color 0.2s ease; }
.pv-news a:hover h3 { color: var(--accent); }
.pv-news p { margin-top: 8px; font-size: 0.88rem; }

/* 深色区补充说明 */
.pv-finish-note {
  max-width: 78ch;
  margin-top: 36px;
  padding-left: 16px;
  border-left: 2px solid rgba(143, 169, 255, 0.55);
  font-size: 0.88rem;
}

/* 页脚信息表 */
.pv-footer__meta { display: grid; gap: 12px; margin: 26px 0 0; }
.pv-footer__meta > div { display: grid; gap: 3px; }
.pv-footer__meta dt { font-size: 0.74rem; color: #8a91a0; font-family: var(--mono); letter-spacing: 0.08em; }
.pv-footer__meta dd { margin: 0; font-size: 0.88rem; color: #c4c9d2; }

/* 能力页专用：两栏边界说明、三栏流程、浅底 CTA 卡与浅底幽灵按钮 */
.pv-steps--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.pv-steps--two li { padding: 28px 26px 32px; }
.pv-steps--two li:first-child { padding-left: 0; }
.pv-steps--two li p { font-size: 0.94rem; line-height: 1.85; }

.pv-flow--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pv-flow--three p { line-height: 1.8; }

.pv-cta-card {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: clamp(24px, 3vw, 36px);
  background: var(--paper);
  border: 1px solid #e2e6f0;
  border-radius: 8px;
}
.pv-cta-card h4 { font-size: 1.12rem; }
.pv-cta-card p { font-size: 0.94rem; }
.pv-cta-card .pv-btn { width: 100%; }

.pv-btn--ghost-dark { background: transparent; color: var(--ink); border-color: #d3d8e4; }
.pv-btn--ghost-dark:hover { border-color: var(--accent); color: var(--accent); }

@media (max-width: 900px) {
  .pv-steps--two { grid-template-columns: minmax(0, 1fr); }
  .pv-steps--two li { padding: 24px 0; border-left: 0; border-top: 1px solid rgba(255, 255, 255, 0.14); }
  .pv-steps--two li:first-child { border-top: 0; }
  .pv-flow--three { grid-template-columns: minmax(0, 1fr); }
}

/* 补充响应式 */
@media (max-width: 1100px) {
  .pv-scenarios { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pv-process { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .pv-capability article { grid-template-columns: 40px minmax(0, 1fr); }
  .pv-capability__no { grid-column: 1; grid-row: auto; }
  .pv-capability h3 { grid-column: 2; grid-row: auto; }
  .pv-capability > article > p,
  .pv-capability ul { grid-column: 1 / -1; grid-row: auto; margin-top: 12px; }
  .pv-news { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .pv-scenarios { grid-template-columns: minmax(0, 1fr); }
  .pv-process { grid-template-columns: minmax(0, 1fr); }
  .pv-gallery { grid-template-columns: minmax(0, 1fr); }
  .pv-cases { grid-template-columns: minmax(0, 1fr); }
  .pv-news { grid-template-columns: minmax(0, 1fr); }
  .pv-hero__facts { gap: 18px 28px; }
}

/* ============ 手机端整体收紧 ============
   桌面端的留白比例在窄屏上会显得过于松散：区块间距过大、
   图片与文字栏宽不一致。这里统一收一档。 */
@media (max-width: 860px) {
  :root { --section-y: clamp(46px, 7.5vw, 70px); }

  .pv-feature__head { padding-bottom: 22px; }
  .pv-feature__head h2 { font-size: clamp(1.42rem, 6.2vw, 1.9rem); }
  .pv-feature__head p { margin-top: 14px; }

  .pv-capability article { padding: 20px 0; }
  .pv-card,
  .pv-scenarios article,
  .pv-process li { padding: 20px 18px; }
  .pv-faq summary { padding: 20px 2px; }
  .pv-faq details > p { padding-bottom: 20px; }

  .pv-hero { min-height: 82vh; }
  .pv-hero__inner { padding-bottom: 54px; }
  .pv-hero__lead { margin-top: 18px; }
  .pv-hero__actions { margin-top: 24px; }
  .pv-hero__facts { gap: 14px 26px; margin-top: 26px; padding-top: 18px; }
  .pv-hero__facts strong { font-size: 1.1rem; }

  .pv-metrics strong { font-size: 1.28rem; }
  .pv-grid-stats strong { font-size: 1.36rem; }
  .pv-dark__title { font-size: clamp(1.5rem, 6.4vw, 2rem); }
  .pv-manifesto h2 { font-size: clamp(1.6rem, 7vw, 2.1rem); }
  .pv-contact h2 { font-size: clamp(1.5rem, 6.4vw, 2rem); }
  .pv-contact__qr { gap: 14px; padding: 12px; }
  .pv-contact__qr img { width: 136px; height: 136px; }
  .pv-footer { padding-top: 40px; }
}

/* ============ 手机端字号层级（只作用于窄屏，桌面端不变）============
   窄屏上原本引导段与正文同为 13.8–16px、条目标题只比正文大 1–2px，
   主次分不开。这里统一成五级：
   区块标题 27px → 引导段 17.4px → 条目标题 18px → 正文 15px → 要点/图注 13.4px */
@media (max-width: 860px) {
  /* 1 — 区块标题 */
  .pv-feature__head h2,
  .pv-dark__title {
    font-size: 1.7rem;
    line-height: 1.3;
  }

  /* 区块编号标签：当作引导行处理，拉开字距 */
  .pv-label {
    font-size: 0.78rem;
    letter-spacing: 0.18em;
  }

  /* 2 — 区块引导段：明显大于正文，并加一条强调竖线表示"这是导语" */
  .pv-feature__head > div > p {
    margin-top: 16px;
    padding-left: 14px;
    border-left: 2px solid var(--accent);
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--body);
  }
  .pv-contact__lead,
  .pv-hero__lead {
    font-size: 1.06rem;
    line-height: 1.78;
  }

  /* 3 — 条目标题 */
  .pv-scenarios h3,
  .pv-capability h3,
  .pv-card h3,
  .pv-process h3,
  .pv-cases h3,
  .pv-news h3,
  .pv-flow strong {
    font-size: 1.0625rem;
    line-height: 1.35;
  }

  /* 4 — 正文：各组件统一到同一号 */
  .pv-scenarios > article > p,
  .pv-capability > article > p,
  .pv-card > p,
  .pv-process p,
  .pv-cases p,
  .pv-news p,
  .pv-flow p,
  .pv-faq details > p {
    font-size: 0.9375rem;
    line-height: 1.75;
  }

  /* 5 — 辅助信息：要点、字段名、图注、脚注 */
  .pv-scenarios ul,
  .pv-capability ul,
  .pv-cases ul,
  .pv-card dl,
  .pv-chips span,
  .pv-figure figcaption,
  .pv-gallery figcaption,
  .pv-note,
  .pv-footer__meta dd {
    font-size: 0.84rem;
    line-height: 1.65;
  }

  /* 数值：抬高一级，和标题形成对比 */
  .pv-metrics strong,
  .pv-grid-stats strong {
    font-size: 1.5rem;
    line-height: 1.25;
  }
  .pv-metrics span,
  .pv-grid-stats span { font-size: 0.78rem; }

  /* 问答：问题明显大于答案 */
  .pv-faq summary { font-size: 1.06rem; line-height: 1.5; }

  /* 参数表：值比字段名大一档 */
  .pv-spec-list span { font-size: 0.8rem; }
  .pv-spec-list strong { font-size: 1rem; }

  /* 材料卡字段：名小值大，值加粗 */
  .pv-card dt { font-size: 0.8rem; }
  .pv-card dd { font-size: 0.9rem; }

  /* 后处理工艺页（capability.html）里的同类组件 */
  .pv-steps h3 { font-size: 1.125rem; line-height: 1.35; }
  .pv-steps p { font-size: 0.9375rem; line-height: 1.75; }
  .pv-dark__lead { font-size: 1.05rem; line-height: 1.8; }
  .pv-finish-note { font-size: 0.9rem; line-height: 1.75; }
  .pv-cta-card h4 { font-size: 1.125rem; }
  .pv-cta-card p { font-size: 0.9375rem; line-height: 1.75; }
}

/* ============ 阿拉伯语（RTL）============
   阿拉伯语从右往左书写，除了 dir=rtl 交给浏览器镜像，还要处理
   显式写了 left/right 的装饰线，以及阿拉伯文需要更大的行距。 */
html[dir='rtl'] .pv-feature__head > div > p {
  border-left: 0;
  border-right: 2px solid var(--accent);
  padding-left: 0;
  padding-right: 14px;
}
html[dir='rtl'] .pv-nav { direction: rtl; }
html[dir='rtl'] .pv-hero__inner { text-align: right; }
html[dir='rtl'] .pv-footer__meta > div,
html[dir='rtl'] .pv-card dl > div { direction: rtl; }

html[lang='ar'] .pv-hero h1 { line-height: 1.45; }
html[lang='ar'] .pv-feature__head h2,
html[lang='ar'] .pv-dark__title { line-height: 1.5; }
html[lang='ar'] .pv-manifesto h2,
html[lang='ar'] .pv-contact h2 { line-height: 1.5; }
html[lang='ar'] .pv-scenarios h3,
html[lang='ar'] .pv-capability h3,
html[lang='ar'] .pv-card h3,
html[lang='ar'] .pv-process h3,
html[lang='ar'] .pv-cases h3,
html[lang='ar'] .pv-news h3 { line-height: 1.5; }
html[lang='ar'] .pv-hero__lead,
html[lang='ar'] .pv-feature__head > div > p { line-height: 2; }