/* =============================================================
   HUAZAN · Industrial Modern (v2 · Restraint)
   ============================================================= */

:root {
  --bg:           #F7F8FA;
  --bg-deep:      #EEF1F5;
  --surface:      #FFFFFF;
  --surface-alt:  #FAFBFC;

  --ink:          #0F1419;
  --ink-soft:     #4A5562;
  --ink-faint:    #8B95A0;
  --ink-invert:   #FFFFFF;

  --primary:       #1A3D5C;
  --primary-deep:  #0A1929;
  --primary-soft:  #E8EEF3;
  --accent:        #C9A25C;
  --accent-soft:   #F4EBDB;
  --chrome-green:  #2F6F55;

  --line:          rgba(15, 20, 25, 0.08);
  --line-strong:   rgba(15, 20, 25, 0.18);
  --shadow-sm:     0 1px 2px rgba(15, 20, 25, 0.04);
  --shadow-md:     0 4px 16px rgba(15, 20, 25, 0.06);

  --r-sm: 2px;
  --r-md: 4px;
  --r-lg: 8px;

  --content: min(1200px, calc(100vw - 48px));
  --section-y: clamp(72px, 9vw, 112px);

  --font-cn: "HarmonyOS Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-en: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Consolas", monospace;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.modal-open { overflow: hidden; }

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }

h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.025em; line-height: 1.2; color: var(--ink); }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

code { font-family: var(--font-mono); }

/* =============================================================
   Layout
   ============================================================= */

.site-shell { width: var(--content); margin: 0 auto; }

.section {
  padding: var(--section-y) 0;
  border-bottom: 1px solid var(--line);
}
.section:last-of-type { border-bottom: 0; }

.section-heading {
  display: grid;
  gap: 14px;
  margin-bottom: 56px;
  max-width: 640px;
}

.section-heading h2 {
  font-size: clamp(1.625rem, 2.6vw, 2.125rem);  /* max 30 → 34px */
  color: var(--ink);
}

.section-heading p {
  color: var(--ink-soft);
  font-size: 1rem;                              /* 0.95 → 1.0rem */
  line-height: 1.8;
  margin-top: 4px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--accent);
}

.section-footnote {
  margin-top: 40px;
  font-size: 0.9rem;
  color: var(--ink-faint);
}

/* =============================================================
   Topbar
   ============================================================= */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0;
  background: rgba(247, 248, 250, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.topbar.is-scrolled { border-bottom-color: var(--line); }

.brand, .footer-brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }

.brand img, .footer-brand img {
  width: 40px; height: 40px;
  border-radius: var(--r-md);
  object-fit: cover;
}

.brand strong, .footer-brand strong {
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
}

.brand span, .footer-brand span {
  display: block;
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 2px;
}

.nav { display: flex; align-items: center; gap: 4px; }

.nav a {
  position: relative;
  padding: 10px 14px;
  font-size: 0.9rem;
  color: var(--ink-soft);
  transition: color 0.15s ease;
}

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

.nav a.is-active {
  color: var(--primary);
  font-weight: 500;
}

.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--surface);
}

.nav-toggle span {
  display: block;
  width: 18px; height: 1.5px;
  margin: 4px auto;
  background: var(--ink);
}

/* =============================================================
   Buttons
   ============================================================= */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--r-md);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.button::after {
  content: "→";
  font-family: var(--font-en);
  transition: transform 0.2s ease;
}

.button:hover::after { transform: translateX(3px); }

.button.primary {
  background: var(--primary-deep);
  color: var(--ink-invert);
}

.button.primary:hover { background: #000814; }

.button.secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}

.button.secondary:hover {
  border-color: var(--ink);
  background: var(--surface);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 500;
}

.text-link::after { content: "→"; transition: transform 0.2s ease; }
.text-link:hover::after { transform: translateX(3px); }

/* =============================================================
   Hero (home) — typography + periodic-table cell
   ============================================================= */

.hero {
  padding: clamp(80px, 11vw, 140px) 0 clamp(72px, 10vw, 120px);
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 120px;   /* 从 72px 提升到 120px，彻底避免挤压 */
  align-items: center;
}

.hero-copy { max-width: 600px; }

.hero h1 {
  font-size: clamp(1.625rem, 2.5vw, 2.25rem);   /* 32 → 36px，+12.5% */
  font-weight: 600;
  line-height: 1.28;
  margin-top: 22px;
  letter-spacing: -0.02em;
}

.hero-text {
  margin: 24px 0 36px;
  color: var(--ink-soft);
  font-size: 1rem;                              /* 0.95 → 1.0rem */
  line-height: 1.9;
  max-width: 52ch;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Periodic table cell */
.hero-cell {
  justify-self: end;
  width: min(250px, 100%);   /* 220 → 250px */
}

.pt-cell {
  position: relative;
  aspect-ratio: 4 / 5;
  padding: 20px 20px 24px;
  background: var(--surface);
  border: 1px solid var(--ink);
  border-radius: var(--r-md);
  display: flex;
  flex-direction: column;
  box-shadow: 3px 3px 0 0 var(--ink);
}

.pt-num {
  font-family: var(--font-en);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1;
}

.pt-sym {
  flex: 1;
  display: grid;
  place-items: center;
  font-family: var(--font-en);
  font-size: clamp(3.5rem, 8vw, 4.75rem);
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--ink);
  margin-top: -8px;
}

.pt-en {
  font-family: var(--font-en);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  text-align: center;
}

.pt-cn {
  font-family: var(--font-cn);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
  text-align: center;
  margin-top: 4px;
}

.pt-mass {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  text-align: center;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  letter-spacing: 0.02em;
}

/* =============================================================
   Metric strip
   ============================================================= */

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.metric-strip article {
  padding: 48px 32px;      /* 从 28px 提升到 48px 留白 */
  border-right: 1px solid var(--line);
}

.metric-strip article:last-child { border-right: 0; }

.metric-strip strong {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(2.25rem, 3.8vw, 3.25rem);   /* 46 → 52px */
  font-weight: 500;
  letter-spacing: -0.035em;
  color: var(--ink);
  line-height: 0.95;
}

.metric-strip strong sup {
  font-size: 0.42em;
  font-weight: 500;
  color: var(--ink-faint);
  margin-left: 3px;
  vertical-align: top;
}

.metric-strip span {
  display: block;
  margin-top: 18px;
  font-size: 0.85rem;                /* 0.8 → 0.85rem */
  font-weight: 500;
  color: var(--ink-faint);
  line-height: 1.5;
  letter-spacing: 0.02em;
}

/* =============================================================
   Product grid — 方正展柜
   ============================================================= */

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;    /* 从 32px 提升到 48px，卡片间更通透 */
}

.product-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.product-card:hover { border-color: var(--line-strong); }

/* 图片区：4:3 宽扁卡（不再 1:1 方形），大 padding 让产品"浮在展柜里" */
.product-card-media {
  aspect-ratio: 4 / 3;
  background: var(--surface);
  display: grid;
  place-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.product-card-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 26%;           /* 32% → 26%，产品图回升一点 */
}

.product-card-body {
  padding: 28px 28px 32px;    /* 从 24/26 提升，内部更宽松 */
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.product-card-tag {
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.product-card h3 {
  font-size: 1.15rem;         /* 1.05 → 1.15rem */
  font-weight: 600;
}

.product-card p {
  color: var(--ink-soft);
  font-size: 0.92rem;         /* 0.88 → 0.92rem */
  line-height: 1.75;
  flex: 1;
}

.product-card .text-link { margin-top: 8px; }

/* =============================================================
   Capability matrix — 纯文字，6 列网格
   ============================================================= */

.capability-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cap-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.cap-card:hover {
  border-color: var(--line-strong);
}

/* 小尺寸图像带：110px 高，不夺主角 */
.cap-card-media {
  position: relative;
  height: 110px;
  overflow: hidden;
}

.cap-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.cap-card:hover .cap-card-media img {
  transform: scale(1.04);
}

/* 实验室型：浅色背景，清冷感 */
.cap-card--lab .cap-card-media {
  background: linear-gradient(180deg, #F0F4F8 0%, #E3E9EF 100%);
}

.cap-card--lab .cap-card-media img {
  filter: saturate(0.78) contrast(1.04) brightness(1.02);
  mix-blend-mode: multiply;
}

.cap-card--lab .cap-card-media::after {
  /* 实验室：顶部一道极浅蓝光 */
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26, 61, 92, 0.06) 0%, transparent 40%);
  pointer-events: none;
}

/* 车间型：深色背景，熔炉炽热感 */
.cap-card--workshop .cap-card-media {
  background: #0F1419;
}

.cap-card--workshop .cap-card-media img {
  filter: saturate(0.85) contrast(1.12) brightness(0.92);
}

.cap-card--workshop .cap-card-media::after {
  /* 车间：底部一缕暖琥珀光，模拟熔炉发热 */
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(201, 162, 92, 0.22) 100%);
  pointer-events: none;
  mix-blend-mode: screen;
}

/* 文字区 */
.cap-card-body {
  padding: 22px 24px 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cap-tag {
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.cap-card--lab .cap-tag { color: var(--primary); }
.cap-card--workshop .cap-tag { color: var(--accent); }

.cap-card h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--ink);
}

.cap-card p {
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* =============================================================
   Credentials split (Patents + Park)
   ============================================================= */

.credentials-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}

.creds-patent h3,
.creds-park h3 {
  font-size: 1.375rem;               /* 1.25 → 1.375rem */
  font-weight: 600;
  margin: 14px 0 14px;
}

.creds-patent > p,
.creds-park > p {
  color: var(--ink-soft);
  font-size: 0.98rem;                /* 0.93 → 0.98rem */
  line-height: 1.8;
  margin-bottom: 24px;
}

.patent-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  margin-bottom: 20px;
}

.patent-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}

.patent-list code {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.03em;
}

.patent-list span {
  font-size: 0.8rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

.creds-park-spec {
  display: grid;
  gap: 0;
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.creds-park-spec > div {
  display: flex;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}

.creds-park-spec dt {
  color: var(--ink-faint);
  margin: 0;
}

.creds-park-spec dd {
  margin: 0;
  color: var(--ink);
  font-weight: 500;
}

/* =============================================================
   CTA band
   ============================================================= */

.cta-band {
  background: var(--primary-deep);
  color: var(--ink-invert);
  padding: clamp(48px, 7vw, 80px) clamp(32px, 5vw, 56px);
  border-radius: var(--r-md);
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 48px;
  align-items: center;
}

.cta-band h2 {
  font-size: clamp(1.45rem, 2.4vw, 1.95rem);   /* max 28 → 31px */
  color: var(--ink-invert);
  margin-bottom: 12px;
  font-weight: 600;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.68);
  max-width: 54ch;
  line-height: 1.7;
  font-size: 1rem;
}

.cta-band-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.cta-band .button.primary {
  background: var(--accent);
  color: var(--primary-deep);
}

.cta-band .button.primary:hover { background: #D9B06D; }

.cta-band .button.secondary {
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--ink-invert);
}

.cta-band .button.secondary:hover {
  border-color: var(--ink-invert);
  background: rgba(255, 255, 255, 0.06);
}

/* =============================================================
   Footer
   ============================================================= */

.footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 48px;
  align-items: center;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.footer-nav a {
  color: var(--ink-soft);
  font-size: 0.88rem;
  transition: color 0.15s ease;
}

.footer-nav a:hover { color: var(--ink); }

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: right;
  font-size: 0.83rem;
  color: var(--ink-soft);
}

.footer-legal {
  grid-column: 1 / -1;
  padding-top: 28px;
  margin-top: 12px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--ink-faint);
  font-family: var(--font-en);
}

/* =============================================================
   Page hero (sub-pages)
   ============================================================= */

.page-hero {
  padding: clamp(72px, 10vw, 120px) 0 clamp(48px, 6vw, 80px);
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  font-size: clamp(1.75rem, 3.2vw, 2.625rem);
  max-width: 18ch;
  margin-top: 18px;
  font-weight: 600;
}

.page-hero > p {
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 62ch;
  margin: 22px 0 0;
}

.page-hero-meta,
.inquiry-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.page-hero-meta span,
.inquiry-hero-meta span {
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

/* =============================================================
   Inquiry form
   ============================================================= */

.inquiry-page {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  max-width: 880px;
  margin: 0 auto;
}

.inquiry-intro .section-heading { margin-bottom: 32px; }

.inquiry-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: clamp(32px, 4vw, 56px);
  display: grid;
  gap: 26px;
}

.form-head { display: grid; gap: 8px; }
.form-head h2 { font-size: 1.35rem; font-weight: 600; }
.form-head p { color: var(--ink-soft); font-size: 0.93rem; line-height: 1.7; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.field { display: grid; gap: 8px; }
.field.field-full { grid-column: 1 / -1; }

.field > span {
  font-size: 0.85rem;
  color: var(--ink-soft);
  font-weight: 500;
}

.field input,
.field select,
.field textarea {
  font: inherit;
  font-size: 0.93rem;
  padding: 11px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--surface-alt);
  color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 0;
  border-color: var(--primary);
  background: var(--surface);
}

.field textarea { resize: vertical; min-height: 140px; }

.honeypot-field { display: none; }

.form-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.form-feedback { margin: 0; font-size: 0.88rem; min-height: 1.5em; }
.form-feedback.is-error { color: #C03A2B; }
.form-feedback.is-success { color: var(--chrome-green); }
.form-feedback.is-pending { color: var(--ink-faint); }

.form-note {
  padding: 16px 18px;
  background: var(--bg-deep);
  border-radius: var(--r-md);
  font-size: 0.86rem;
}

.form-note span {
  display: block;
  font-family: var(--font-en);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
  font-weight: 600;
}

.form-note p { color: var(--ink-soft); line-height: 1.7; }

/* =============================================================
   Form modal
   ============================================================= */

.form-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px;
}

.form-modal[hidden] { display: none; }

.form-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 25, 41, 0.56);
  backdrop-filter: blur(4px);
}

.form-modal-panel {
  position: relative;
  background: var(--surface);
  border-radius: var(--r-md);
  padding: 36px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 12px 36px rgba(15, 20, 25, 0.12);
  text-align: center;
}

.form-modal-panel h2 { font-size: 1.3rem; font-weight: 600; margin-top: 8px; }
.form-modal-panel > p { color: var(--ink-soft); margin: 12px 0 22px; line-height: 1.7; font-size: 0.93rem; }

.form-modal-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

.form-modal-note {
  margin-top: 18px;
  font-size: 0.8rem;
  color: var(--ink-faint);
}

/* =============================================================
   兼容旧 class（sub-pages 还在用）
   ============================================================= */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 28px;
  display: grid;
  gap: 12px;
}

.feature-card h3 { font-size: 1.05rem; font-weight: 600; }
.feature-card p { color: var(--ink-soft); font-size: 0.9rem; line-height: 1.7; }

.feature-tag {
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.list-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.info-panel,
.capability-card,
.detail-box,
.contact-card,
.contact-panel,
.section-card,
.product-detail {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 32px;
}

.info-panel h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 14px; }
.info-panel p { color: var(--ink-soft); line-height: 1.75; font-size: 0.93rem; }

.bullet-list { display: grid; gap: 10px; margin: 14px 0 18px; }

.bullet-list li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.65;
}

.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 1px;
  background: var(--accent);
}

.process-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

.process-strip article {
  padding: 32px 28px 32px 0;
  border-right: 1px solid var(--line);
}

.process-strip article:last-child { border-right: 0; padding-right: 0; }

.process-strip article > span {
  display: block;
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 14px;
}

.process-strip h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 10px; }
.process-strip p { color: var(--ink-soft); font-size: 0.88rem; line-height: 1.7; }

.inquiry-intro { display: grid; gap: 24px; }
.section-heading.compact { margin-bottom: 0; }

/* =============================================================
   About page
   ============================================================= */

.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
}

.about-split article h3 {
  font-size: 1.375rem;
  font-weight: 600;
  margin: 14px 0 16px;
}

.about-split article p {
  color: var(--ink-soft);
  font-size: 0.98rem;
  line-height: 1.85;
  margin-bottom: 14px;
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.strength-card {
  padding: 40px 32px 40px 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.strength-card:nth-child(3n) { border-right: 0; }
.strength-card:last-child,
.strength-card:nth-last-child(2),
.strength-card:nth-last-child(3) { border-bottom: 0; }

.strength-num {
  font-family: var(--font-en);
  font-size: 2.25rem;
  font-weight: 300;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 22px;
  letter-spacing: -0.02em;
}

.strength-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.strength-card p {
  color: var(--ink-soft);
  font-size: 0.93rem;
  line-height: 1.75;
}

.timeline {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  counter-reset: timeline;
}

.timeline li {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 48px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.timeline li:last-child { border-bottom: 0; }

.timeline-tag {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.timeline li h4 {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.5;
  letter-spacing: -0.01em;
}

/* =============================================================
   Products page (product-detail)
   ============================================================= */

.product-detail {
  padding: clamp(56px, 7vw, 88px) 0;
}

.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.product-detail-media {
  aspect-ratio: 4 / 5;
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg-deep) 100%);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.product-detail-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 15%;
}

.product-detail-copy h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 600;
  margin: 16px 0 20px;
  letter-spacing: -0.025em;
}

.product-detail-lead {
  color: var(--ink-soft);
  font-size: 1.02rem;
  line-height: 1.85;
  margin-bottom: 28px;
}

.product-spec {
  display: grid;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.product-spec > div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.94rem;
}

.product-spec dt {
  color: var(--ink-faint);
  margin: 0;
  letter-spacing: 0.02em;
}

.product-spec dd {
  margin: 0;
  color: var(--ink);
  font-weight: 500;
}

/* =============================================================
   Capabilities page (facility cards, park showcase)
   ============================================================= */

.facility-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.facility-grid--two {
  grid-template-columns: 1fr 1fr;
}

.facility-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.facility-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  margin: 0;
}

.facility-media--wide {
  aspect-ratio: 21 / 9;
}

.facility-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.facility-card:hover .facility-media img {
  transform: scale(1.03);
}

/* Lab variant */
.facility-card--lab .facility-media {
  background: linear-gradient(180deg, #F0F4F8 0%, #E3E9EF 100%);
}

.facility-card--lab .facility-media img {
  filter: saturate(0.82) contrast(1.04) brightness(1.02);
  mix-blend-mode: multiply;
}

.facility-card--lab .facility-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26, 61, 92, 0.05) 0%, transparent 40%);
  pointer-events: none;
}

/* Workshop variant */
.facility-card--workshop .facility-media {
  background: #0F1419;
}

.facility-card--workshop .facility-media img {
  filter: saturate(0.85) contrast(1.1) brightness(0.92);
}

.facility-card--workshop .facility-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(201, 162, 92, 0.18) 100%);
  pointer-events: none;
  mix-blend-mode: screen;
}

.facility-card--wide { grid-column: 1 / -1; }

.facility-body {
  padding: 24px 28px 28px;
  flex: 1;
}

.facility-tag {
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.facility-card--lab .facility-tag { color: var(--primary); }
.facility-card--workshop .facility-tag { color: var(--accent); }

.facility-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--ink);
  letter-spacing: -0.015em;
}

.facility-model {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-faint);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.facility-body p:not(.facility-model) {
  color: var(--ink-soft);
  font-size: 0.93rem;
  line-height: 1.75;
}

/* Park showcase */
.park-showcase {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

.park-showcase-main,
.park-showcase-side {
  position: relative;
  margin: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--surface-ink);
}

.park-showcase-main { aspect-ratio: 16 / 10; }
.park-showcase-side { aspect-ratio: 4 / 5; }

.park-showcase figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.8) brightness(0.98);
}

.park-showcase figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(10, 25, 41, 0.55) 100%);
  pointer-events: none;
}

.park-showcase figcaption {
  position: absolute;
  left: 18px;
  bottom: 18px;
  z-index: 2;
  padding: 6px 12px;
  background: rgba(10, 25, 41, 0.82);
  color: var(--ink-invert);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  border-radius: var(--r-sm);
  backdrop-filter: blur(6px);
}

/* =============================================================
   Contact page
   ============================================================= */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 40px;
}

.contact-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 14px 0 12px;
}

.contact-card-desc {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 24px;
}

.contact-list {
  display: grid;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.contact-list > div {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.94rem;
  align-items: baseline;
}

.contact-list dt {
  color: var(--ink-faint);
  margin: 0;
  letter-spacing: 0.02em;
}

.contact-list dd {
  margin: 0;
  color: var(--ink);
  font-weight: 500;
  line-height: 1.6;
}

.contact-list a { color: inherit; border-bottom: 1px solid var(--line-strong); }
.contact-list a:hover { color: var(--primary); border-bottom-color: var(--primary); }

/* =============================================================
   Inquiry guide (form sidebar info)
   ============================================================= */

.inquiry-guide { margin-bottom: 40px; }

.guide-steps {
  display: grid;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.guide-steps li {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.guide-steps li > span {
  font-family: var(--font-en);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.guide-steps li h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.guide-steps li p {
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.65;
}

/* =============================================================
   Responsive
   ============================================================= */

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; gap: 48px; padding: 56px 0; }
  .hero-cell { justify-self: start; width: min(200px, 55%); }

  .metric-strip { grid-template-columns: repeat(2, 1fr); }
  .metric-strip article { border-bottom: 1px solid var(--line); padding: 32px 20px; }
  .metric-strip article:nth-last-child(-n+2) { border-bottom: 0; }
  .metric-strip article:nth-child(2n) { border-right: 0; }

  /* 产品卡：从 3 列纵卡 → 单列横向卡（图小在左，字在右） */
  .product-grid { grid-template-columns: 1fr; gap: 20px; }
  .product-card { flex-direction: row; }
  .product-card-media {
    flex: 0 0 36%;
    aspect-ratio: 1 / 1;
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }
  .product-card-media img { padding: 22%; }
  .product-card-body { padding: 22px 24px; gap: 8px; }

  .capability-matrix { grid-template-columns: 1fr 1fr; gap: 16px; }

  .credentials-split { grid-template-columns: 1fr; gap: 48px; }

  .cta-band { grid-template-columns: 1fr; padding: 48px 32px; gap: 28px; }
  .cta-band-actions { justify-content: flex-start; }

  .list-layout { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .process-strip { grid-template-columns: 1fr; }
  .process-strip article {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 24px 0;
  }
  .process-strip article:last-child { border-bottom: 0; }

  .footer { grid-template-columns: 1fr; gap: 24px; text-align: center; }
  .footer-nav { justify-content: flex-start; }
  .footer-meta { text-align: left; }
  .footer-legal { flex-direction: column; gap: 8px; }

  /* Sub-pages responsive */
  .about-split { grid-template-columns: 1fr; gap: 48px; }
  .strength-grid { grid-template-columns: 1fr; }
  .strength-card { border-right: 0; padding: 32px 0; }
  .timeline li { grid-template-columns: 1fr; gap: 8px; padding: 22px 0; }

  .product-detail-layout { grid-template-columns: 1fr; gap: 40px; }
  .product-detail-media { aspect-ratio: 4 / 3; max-width: 420px; }
  .product-detail--alt .product-detail-copy { order: 2; }
  .product-spec > div { grid-template-columns: 1fr; gap: 4px; padding: 10px 0; }

  .facility-grid, .facility-grid--two { grid-template-columns: 1fr; }
  .park-showcase { grid-template-columns: 1fr; }
  .park-showcase-main, .park-showcase-side { aspect-ratio: 16 / 10; }

  .contact-grid { grid-template-columns: 1fr; gap: 20px; }
  .contact-card { padding: 28px; }
  .contact-list > div { grid-template-columns: 72px 1fr; gap: 16px; }

  .nav {
    position: fixed;
    top: 70px;
    right: 24px; left: 24px;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    box-shadow: 0 12px 36px rgba(15, 20, 25, 0.1);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav a { padding: 12px 14px; border-radius: var(--r-md); }
  .nav a.is-active::after { display: none; }
  .nav a.is-active { background: var(--primary-soft); }
  .nav-toggle { display: block; }
}

@media (max-width: 640px) {
  .capability-matrix { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }

  /* 超小屏：产品卡图片区域再收紧一些 */
  .product-card-media { flex: 0 0 32%; }
  .product-card-media img { padding: 18%; }
  .product-card-body { padding: 18px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}