:root {
  --rd-brand: #cd0014;
  --rd-bright: #dc0000;
  --rd-deep: #af0000;
  --rd-brand-hover: #af0000;
  --rd-ink: #1a1816;
  --rd-dark: #3d3935;
  --rd-medium: #707070;
  --rd-light: #b5b5b5;
  --rd-pale: #f4f4f4;
  --rd-paler: #fafafa;
  --rd-white: #ffffff;
  --rd-border: #e6e6e6;
  --rd-hair: #ededed;
  --rd-tint: #fff2f3;
  --rd-font-cn: "未来荧黑 SC", "Future YingHei SC", "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  --rd-font-en: "Poppins", Arial, sans-serif;
  --rd-container: 1280px;
  --rd-radius: 8px;
  --rd-shadow: 0 10px 30px rgba(26, 24, 22, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip; /* 防横向滚动但不创建滚动容器——保证 position:sticky 生效 */
}

body {
  margin: 0;
  background: var(--rd-white);
  color: var(--rd-dark);
  font-family: var(--rd-font-cn);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip; /* 防横向滚动但不创建滚动容器——保证 position:sticky 生效 */
}

body.menu-open {
  overflow: hidden;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--rd-ink);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: 0;
}

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

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

img,
svg {
  display: block;
}

.en,
.num {
  font-family: var(--rd-font-en);
  letter-spacing: 0;
}

.container {
  width: calc(100% - 48px);
  max-width: var(--rd-container);
  margin-inline: auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--rd-brand);
  font-family: var(--rd-font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 48px;
  margin-bottom: 48px;
}

.section-title {
  max-width: 680px;
  font-size: clamp(30px, 3vw, 42px);
}

.section-lead {
  max-width: 560px;
  color: var(--rd-medium);
  font-size: 17px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  color: var(--rd-ink);
  cursor: pointer;
  font-weight: 600;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--rd-brand);
  border-color: var(--rd-brand);
  color: var(--rd-white);
}

.btn-primary:hover {
  background: var(--rd-brand-hover);
  border-color: var(--rd-brand-hover);
}

.btn-ghost {
  border-color: var(--rd-dark);
  color: var(--rd-ink);
}

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

.btn-light {
  background: var(--rd-white);
  border-color: var(--rd-border);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--rd-ink);
  border-bottom: 1px solid currentColor;
  font-weight: 600;
  line-height: 1.4;
}

.text-link.brand {
  color: var(--rd-brand);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--rd-pale);
  color: var(--rd-medium);
  font-size: 12px;
}

.chip.brand {
  background: var(--rd-tint);
  color: var(--rd-brand);
}

.card {
  background: var(--rd-white);
  border: 1px solid var(--rd-border);
  border-radius: var(--rd-radius);
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  color: var(--rd-medium);
  font-size: 12px;
}

.field span {
  color: var(--rd-brand);
}

.input,
.select,
.textarea {
  width: 100%;
  border: 1px solid var(--rd-border);
  border-radius: 4px;
  background: var(--rd-white);
  color: var(--rd-ink);
  padding: 12px 14px;
}

.textarea {
  resize: vertical;
}

.input:focus,
.select:focus,
.textarea:focus {
  border-color: var(--rd-ink);
  outline: none;
}

@media (max-width: 900px) {
  .container {
    width: calc(100% - 32px);
    max-width: var(--rd-container);
  }

  .section-head {
    display: grid;
    gap: 20px;
  }

  .section-lead {
    font-size: 15px;
  }
}

/* ============================================================
   Polish · P0/P1 打磨层（字体 / 占位 / 分流 / 表单 / 语言）
   说明：本段集中追加，便于后续维护与替换。
   ============================================================ */

/* 1) 品牌字体脚手架：授权字体文件存在时自动生效，缺文件时优雅回退。 */
@font-face {
  font-family: "Future YingHei SC";
  src: url("../fonts/FutureYingHeiSC.woff2") format("woff2"),
       url("../fonts/FutureYingHeiSC.woff") format("woff");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "Poppins";
  src: url("../fonts/Poppins-Variable.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}

/* 2) 字体观感微调（中高端：更克制的字距与更清晰的渲染） */
body {
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1;
}
h1,
.section-title {
  letter-spacing: -0.01em;
}
.section-title {
  font-weight: 700;
}

/* 3) 拍摄占位组件 —— 真实照片到位前的“待拍框”，带拍摄规格说明。
      用法：<figure><div class="photo-ph"><span class="photo-ph-tag">实拍占位</span>
            <strong>主体说明</strong><em>规格说明</em></div></figure> */
.photo-ph {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 10px;
  width: 100%;
  height: 100%;
  min-height: 260px;
  aspect-ratio: 16 / 10;
  padding: 22px;
  border: 1px dashed #d9c2c4;
  border-radius: var(--rd-radius);
  background: linear-gradient(135deg, var(--rd-paler) 0%, var(--rd-tint) 100%);
  color: var(--rd-dark);
  overflow: hidden;
}
.photo-ph::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    45deg,
    rgba(205, 0, 20, 0.045) 0,
    rgba(205, 0, 20, 0.045) 1px,
    transparent 1px,
    transparent 13px
  );
  pointer-events: none;
}
.photo-ph::after {
  content: "▢";
  position: absolute;
  top: 18px;
  right: 20px;
  font-size: 22px;
  line-height: 1;
  color: var(--rd-brand);
  opacity: 0.5;
}
.photo-ph > * {
  position: relative;
  z-index: 1;
}
.photo-ph .photo-ph-tag {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--rd-font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rd-brand);
  background: var(--rd-white);
  border: 1px solid var(--rd-border);
  border-radius: 999px;
  padding: 4px 11px;
}
.photo-ph strong {
  font-size: clamp(16px, 1.5vw, 20px);
  color: var(--rd-ink);
  line-height: 1.32;
}
.photo-ph em {
  font-style: normal;
  font-size: 12.5px;
  color: var(--rd-medium);
  line-height: 1.65;
}
.photo-ph.is-product {
  aspect-ratio: 4 / 3;
  justify-content: center;
  align-items: flex-start;
  background: linear-gradient(135deg, #fbfbfb 0%, #f0f0f0 100%);
  border-color: var(--rd-border);
}
.photo-ph.is-product::after {
  color: var(--rd-light);
}

/* 证书墙占位（一排小框） */
.cert-wall-ph {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 22px;
}
.cert-wall-ph span {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 92px;
  padding: 10px;
  border: 1px dashed #d9c2c4;
  border-radius: 6px;
  background: var(--rd-paler);
  color: var(--rd-medium);
  font-size: 12px;
  line-height: 1.5;
}
@media (max-width: 720px) {
  .cert-wall-ph { grid-template-columns: repeat(2, 1fr); }
}

/* 4) 首页受众分流 */
.audience-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.audience-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 34px;
  border: 1px solid var(--rd-border);
  border-radius: var(--rd-radius);
  background: var(--rd-white);
  box-shadow: var(--rd-shadow);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}
.audience-card:hover {
  transform: translateY(-3px);
  border-color: var(--rd-brand);
  box-shadow: 0 18px 44px rgba(26, 24, 22, 0.12);
}
.audience-card .audience-kicker {
  font-family: var(--rd-font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rd-brand);
}
.audience-card h3 {
  font-size: clamp(20px, 2vw, 26px);
}
.audience-card p {
  color: var(--rd-medium);
  flex: 1;
}
.audience-card .audience-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.audience-card .audience-tags span {
  font-size: 12px;
  color: var(--rd-medium);
  background: var(--rd-pale);
  border-radius: 999px;
  padding: 4px 10px;
}
.audience-card .audience-go {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--rd-ink);
}
.audience-card:hover .audience-go {
  color: var(--rd-brand);
}
@media (max-width: 860px) {
  .audience-split { grid-template-columns: 1fr; }
  .audience-card { padding: 26px; }
}

/* 5) 表单提交反馈 */
.form-notice {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 14px;
  display: none;
}
.form-notice.is-visible { display: block; }
.form-notice.is-success {
  background: #f0f8f1;
  border: 1px solid #cfe8d2;
  color: #246b34;
}
.form-notice.is-error {
  background: var(--rd-tint);
  border: 1px solid #f1c9cd;
  color: var(--rd-deep);
}

/* 信息性合规脚注（弱化，不抢戏） */
.cta-compliance {
  margin-top: 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--rd-light);
  max-width: 760px;
}
.page-cta .cta-compliance,
.consult-panel .cta-compliance { color: rgba(255, 255, 255, 0.55); }

/* OEM 合作参数速览：4 卡撑满 container 两端（不影响 hero 内的 static-proof） */
#terms .static-proof {
  max-width: none;
  margin-top: 0;
  gap: 20px;
}

/* 联系页微信咨询卡片 */
.wechat-qr-ph {
  margin-top: 14px;
  width: 150px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px dashed #d9c2c4;
  border-radius: 10px;
  background: var(--rd-paler);
  color: var(--rd-medium);
  font-size: 12px;
  line-height: 1.7;
}

/* 联系页：直接联系方式列表 */
.contact-direct {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.contact-direct li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid var(--rd-border);
  border-radius: 10px;
  background: var(--rd-white);
}
.contact-direct strong {
  color: var(--rd-ink);
  font-size: 13px;
  font-weight: 600;
}
.contact-direct a {
  color: var(--rd-brand);
  font-weight: 600;
}
.contact-direct a:hover {
  text-decoration: underline;
}

/* 6) EN 语言入口（指向英文官网） */
.lang-en {
  cursor: pointer;
  transition: color 160ms ease;
}
.lang-en:hover { color: var(--rd-brand); }

/* ============================================================
   Polish · 首页重度改造（Hero 分栏 / 信任带 / 轻分流 / 产品条 / 节奏）
   仅服务首页 .home-page，不影响其他页面。
   ============================================================ */

/* A. Hero 左右分栏 */
.home-page .static-hero.home-hero-split { min-height: auto; }
.home-page .home-hero-split .hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 56px;
}
.home-page .home-hero-split h1 {
  font-size: clamp(32px, 4vw, 52px);
  letter-spacing: -0.015em;
  margin: 14px 0 18px;
}
.home-page .home-hero-split .hero-lead {
  max-width: 560px;
  font-size: 17px;
  color: var(--rd-dark);
}
.home-page .home-hero-split .page-actions { margin-top: 26px; }
.home-page .home-hero-media .photo-ph { min-height: 340px; box-shadow: var(--rd-shadow); }
.home-page .home-hero-media img {
  display: block;
  width: 100%;
  min-height: 340px;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--rd-radius);
  box-shadow: var(--rd-shadow);
}
@media (max-width: 900px) {
  .home-page .home-hero-split .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .home-page .home-hero-media { order: -1; }
}

/* B. 信任带（浅暖灰 + 品牌红顶边）—— 4 个信任支柱：事实 + 买家关心的一句话 */
.trust-strip {
  position: relative;
  background: none;
  color: var(--rd-dark);
  padding: 0;
  border-top: 2px solid var(--rd-brand);
  border-bottom: 1px solid var(--rd-border);
  overflow: hidden;
}
.trust-strip::before {
  /* 极淡斜纹质感 
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(45deg, rgba(26, 24, 22, 0.02) 0 1px, transparent 1px 14px);
  pointer-events: none;*/
}
.trust-strip .trust-head {
  position: relative;
  text-align: center;
  margin-bottom: 32px;
}
.trust-strip .trust-head .eyebrow { justify-content: center; }
.trust-strip .trust-head .trust-title {
  margin-top: 10px;
  color: var(--rd-ink);
  font-size: clamp(20px, 2.2vw, 28px);
  letter-spacing: -0.01em;
}
.trust-strip .trust-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.trust-strip article {
  position: relative;
  padding: 6px 28px;
}
.trust-strip article + article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 60px;
  background: linear-gradient(180deg, transparent, rgba(26, 24, 22, 0.13) 16%, rgba(26, 24, 22, 0.13) 84%, transparent);
}
.trust-strip .tp-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--rd-brand);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.trust-strip .tp-kicker::before {
  content: "";
  width: 16px;
  height: 2px;
  background: var(--rd-brand);
  border-radius: 2px;
}
.trust-strip .tp-fact {
  display: block;
  padding: 0 18px;
  color: var(--rd-ink);
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 700;
  line-height: 1.35;
  white-space: nowrap; /* 关键事实整行不折，避免“1万 / ㎡基地”这种拦腰断行 */
}
.trust-strip .tp-note {
  display: block;
  color: var(--rd-medium);
  font-size: 13px;
  line-height: 1.55;
  text-align: left;
}
@media (max-width: 860px) {
  .trust-strip { padding: 20px 0; }
  .trust-strip .trust-grid { grid-template-columns: repeat(2, 1fr); row-gap: 30px; column-gap: 8px; }
  .trust-strip article { padding: 6px 20px; }
  .trust-strip article:nth-child(2n + 1)::before { display: none; }
}
@media (max-width: 480px) {
  .trust-strip .trust-grid { grid-template-columns: repeat(2, 1fr); row-gap: 12px; }
  .trust-strip article { padding: 0 4px; }
  .trust-strip article::before { display: none !important; }
}

/* C. 轻量分流带（比 audience-card 更克制） */
.coop-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.coop-row {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 26px 28px;
  border: 1px solid var(--rd-border);
  border-radius: var(--rd-radius);
  background: var(--rd-white);
  transition: border-color 160ms ease, background-color 160ms ease;
}
.coop-row:hover { border-color: var(--rd-brand); background: var(--rd-paler); }
.coop-row .coop-body { flex: 1; }
.coop-row .coop-kicker {
  font-family: var(--rd-font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rd-brand);
}
.coop-row h3 { font-size: 19px; margin: 6px 0 6px; }
.coop-row p { color: var(--rd-medium); font-size: 14px; }
.coop-row .coop-go {
  flex: none;
  font-weight: 600;
  color: var(--rd-ink);
  white-space: nowrap;
}
.coop-row:hover .coop-go { color: var(--rd-brand); }
@media (max-width: 860px) {
  .coop-band { grid-template-columns: 1fr; }
  .coop-row { flex-direction: column; align-items: flex-start; gap: 12px; }
}

/* D. 核心产品横条 */
.product-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.product-strip a {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--rd-border);
  border-radius: var(--rd-radius);
  overflow: hidden;
  background: var(--rd-white);
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.product-strip a:hover { transform: translateY(-3px); box-shadow: var(--rd-shadow); }
.product-strip .photo-ph { min-height: 150px; border: 0; border-radius: 0; }
.product-strip .ps-img {
  display: block;
  width: 100%;
  height: 230px;
  padding: 0;
  object-fit: contain;
  background: #f8f8f8;
}
.product-strip .ps-body { padding: 14px 16px 16px; }
.product-strip h3 { font-size: 15px; }
.product-strip p { color: var(--rd-medium); font-size: 12.5px; margin-top: 4px; }
@media (max-width: 1100px) { .product-strip { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .product-strip { grid-template-columns: repeat(2, 1fr); } }

/* E. 首页节奏：加大纵向留白 */
.home-page .page-section { padding-top: 76px; padding-bottom: 76px; }
@media (max-width: 900px) {
  .home-page .page-section { padding-top: 52px; padding-bottom: 52px; }
}