/* 英力健业 · Corporate site */
:root {
  --bg: #121212;
  --bg-elevated: #1A1A1A;
  --bg-card: #1E1E1E;
  --bg-card-hover: #242424;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #E8E8E8;
  --text-muted: #A0A0A0;
  --text-dim: #6B6B6B;
  --silver: #C8C8C8;
  --silver-bright: #EDEDED;
  --orange: #E85D04;
  --orange-hover: #F48C06;
  --orange-soft: rgba(232, 93, 4, 0.15);
  --orange-glow: rgba(232, 93, 4, 0.35);
  --champagne: #C4A574;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  --header-h: 72px;
  --font: "Noto Sans SC", system-ui, -apple-system, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --max: 1160px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

ul {
  list-style: none;
}

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

.container {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
}

.section {
  padding: 88px 0;
}

.section-alt {
  background: var(--bg-elevated);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
  font-weight: 600;
  margin-bottom: 14px;
}

.eyebrow::before,
.eyebrow::after {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--orange);
  opacity: 0.7;
}

.section-head h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--silver-bright);
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s,
    transform 0.15s;
  white-space: nowrap;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--orange) 0%, #f48c06 100%);
  color: #111;
  box-shadow: 0 8px 24px var(--orange-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--orange-hover) 0%, #ffba08 100%);
  box-shadow: 0 10px 28px var(--orange-glow);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--silver-bright);
}

.btn-ghost:hover {
  border-color: var(--orange);
  color: var(--orange);
  background: var(--orange-soft);
}

.btn-outline-orange {
  background: transparent;
  border-color: var(--orange);
  color: var(--orange);
}

.btn-outline-orange:hover {
  background: var(--orange);
  color: #111;
}

.btn-lg {
  padding: 14px 30px;
  font-size: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(18, 18, 18, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-logo {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 0 0 1px var(--border);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text strong {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--silver-bright);
  letter-spacing: 0.04em;
}

.brand-text span {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav a {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.2s;
}

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

.header-cta {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--silver);
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  padding: 72px 0 96px;
  overflow: hidden;
  min-height: 0;
  display: flex;
  align-items: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 75% 20%, rgba(232, 93, 4, 0.18), transparent 55%),
    radial-gradient(ellipse 50% 40% at 15% 80%, rgba(196, 165, 116, 0.08), transparent 50%),
    linear-gradient(180deg, #161616 0%, var(--bg) 100%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  right: -5%;
  top: 10%;
  width: min(520px, 48vw);
  height: min(520px, 48vw);
  background: url("logo.png") center / contain no-repeat;
  opacity: 0.07;
  filter: blur(1px);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--orange-soft);
  border: 1px solid rgba(232, 93, 4, 0.35);
  color: var(--orange);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 22px;
  letter-spacing: 0.04em;
}

.hero-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 10px var(--orange);
}

.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3.15rem);
  font-weight: 800;
  line-height: 1.22;
  color: var(--silver-bright);
  letter-spacing: 0.01em;
  margin-bottom: 18px;
}

.hero h1 em {
  font-style: normal;
  color: var(--orange);
}

.hero-lead {
  color: var(--text-muted);
  font-size: 1.08rem;
  max-width: 34em;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-tags span {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--silver);
  font-size: 0.85rem;
  background: rgba(255, 255, 255, 0.02);
}

.hero-visual {
  position: relative;
}

.hero-card {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  box-shadow: var(--shadow);
  aspect-ratio: 1 / 1;
}

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

.hero-float {
  position: absolute;
  left: -18px;
  bottom: 24px;
  background: rgba(26, 26, 26, 0.92);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: 14px 18px;
  box-shadow: var(--shadow);
  max-width: 220px;
}

.hero-float strong {
  display: block;
  color: var(--orange);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.2;
}

.hero-float span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Trust */
.trust {
  padding: 36px 0;
  border-block: 1px solid var(--border);
  background: var(--bg-elevated);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.trust-item {
  text-align: center;
  padding: 12px 8px;
}

.trust-item strong {
  display: block;
  font-size: clamp(1.5rem, 2.5vw, 1.9rem);
  font-weight: 800;
  color: var(--silver-bright);
  margin-bottom: 4px;
}

.trust-item strong span {
  color: var(--orange);
  font-size: 0.85em;
}

.trust-item p {
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.service-card:hover {
  border-color: rgba(232, 93, 4, 0.4);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--orange-soft);
  color: var(--orange);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  font-size: 1.35rem;
  font-weight: 700;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--silver-bright);
  margin-bottom: 10px;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 16px;
}

.service-card .link {
  color: var(--orange);
  font-size: 0.88rem;
  font-weight: 600;
}

/* Process */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 28px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--orange);
  opacity: 0.9;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.step h3 {
  font-size: 1.05rem;
  color: var(--silver-bright);
  margin-bottom: 8px;
}

.step p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Products */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.product-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: transform 0.2s, border-color 0.2s;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(232, 93, 4, 0.35);
}

.product-media {
  aspect-ratio: 16 / 11;
  overflow: hidden;
  background: #0d0d0d;
  position: relative;
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.product-card:hover .product-media img {
  transform: scale(1.05);
}

.product-media .tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(18, 18, 18, 0.75);
  border: 1px solid var(--border-strong);
  font-size: 0.75rem;
  color: var(--silver);
  backdrop-filter: blur(6px);
}

.product-body {
  padding: 18px 20px 22px;
}

.product-body h3 {
  font-size: 1.05rem;
  color: var(--silver-bright);
  margin-bottom: 6px;
}

.product-body p {
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  align-items: center;
}

.about-visual {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  aspect-ratio: 4 / 3;
  box-shadow: var(--shadow);
}

.about-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-copy .eyebrow {
  justify-content: flex-start;
}

.about-copy .eyebrow::before {
  display: none;
}

.about-copy h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.1rem);
  color: var(--silver-bright);
  margin-bottom: 16px;
  line-height: 1.35;
}

.about-copy p {
  color: var(--text-muted);
  margin-bottom: 14px;
}

.about-points {
  margin-top: 22px;
  display: grid;
  gap: 10px;
}

.about-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--silver);
  font-size: 0.95rem;
}

.about-points li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--orange);
  flex-shrink: 0;
  box-shadow: 0 0 8px var(--orange-glow);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 36px;
  align-items: start;
}

.contact-info {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
}

.contact-info h3 {
  font-size: 1.25rem;
  color: var(--silver-bright);
  margin-bottom: 10px;
}

.contact-info > p {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.contact-rows {
  display: grid;
  gap: 16px;
}

.contact-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(232, 93, 4, 0.35);
}

.contact-row .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--orange-soft);
  color: var(--orange);
  display: grid;
  place-items: center;
  font-weight: 700;
  flex-shrink: 0;
  font-size: 0.85rem;
}

.contact-row strong {
  display: block;
  color: var(--silver-bright);
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.contact-row span,
.contact-row .placeholder {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.placeholder {
  font-style: italic;
}

.contact-note {
  margin-top: 18px;
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.5;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
}

.contact-form h3 {
  font-size: 1.25rem;
  color: var(--silver-bright);
  margin-bottom: 6px;
}

.contact-form .form-hint {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 22px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field.full {
  grid-column: 1 / -1;
}

.form-field label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.form-field input,
.form-field select,
.form-field textarea {
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--text-dim);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-soft);
}

.form-field textarea {
  min-height: 120px;
  resize: vertical;
}

.form-actions {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.form-actions .note {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 28px;
  background: #0e0e0e;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 36px;
}

.footer-brand {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.footer-brand img {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  object-fit: cover;
}

.footer-brand strong {
  display: block;
  color: var(--silver-bright);
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.footer-brand p {
  color: var(--text-dim);
  font-size: 0.85rem;
  max-width: 28em;
}

.footer-col h4 {
  color: var(--silver);
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.footer-col a,
.footer-col li {
  color: var(--text-muted);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 8px;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--orange);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.8rem;
}

/* Mobile */
@media (max-width: 960px) {
  .hero-grid,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
    max-width: 420px;
    margin-inline: auto;
  }

  .hero::after {
    opacity: 0.04;
  }

  .services-grid,
  .process-steps,
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: rgba(18, 18, 18, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px 20px;
    gap: 4px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s, opacity 0.25s;
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 12px 10px;
    border-radius: 8px;
  }

  .nav a:hover {
    background: var(--orange-soft);
  }

  .header-cta {
    display: none;
  }

  .header-cta-mobile {
    display: block;
    margin-top: 8px;
  }

  .header-cta-mobile .btn {
    width: 100%;
  }
}

@media (min-width: 769px) {
  .header-cta-mobile {
    display: none;
  }
}

@media (max-width: 560px) {
  .section {
    padding: 64px 0;
  }

  .services-grid,
  .process-steps,
  .trust-grid,
  .products-grid,
  .form-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 48px 0 64px;
    min-height: auto;
  }

  .hero-float {
    left: 12px;
    right: 12px;
    max-width: none;
  }
}