/* 高袁机械 — 主题色 #247180 */
:root {
  --brand: #247180;
  --brand-mid: #2d8f9f;
  --brand-deep: #1a5560;
  --brand-soft: #3a8a98;
  --tint: #e8f4f6;
  --tint-2: #f2f8f9;
  --paper: #f6fafb;
  --white: #ffffff;
  --ink: #1a5560;
  --ink-muted: #4d7a84;
  --line: rgba(36, 113, 128, 0.14);
  --line-light: rgba(255, 255, 255, 0.14);
  --font-display: "Noto Serif SC", "Songti SC", serif;
  --font-sans: "Noto Sans SC", "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-en: "DM Sans", "Noto Sans SC", sans-serif;
  --header-h: 4.75rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --max: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.28;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--brand-mid);
  color: var(--white);
  padding: 0.75rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.container {
  width: min(var(--max), calc(100% - 3.5rem));
  margin-inline: auto;
}

/* —— Header —— */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  background: #fff;
  border-bottom: 1px solid rgba(36, 113, 128, 0.1);
  box-shadow: 0 8px 28px rgba(26, 85, 96, 0.08);
}

.header-inner {
  width: min(1240px, calc(100% - 2.5rem));
  margin-inline: auto;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  background: #fff;
  padding: 0.3rem 0.55rem;
  line-height: 0;
  flex-shrink: 0;
}

.brand-logo {
  height: 2.65rem;
  width: auto;
  max-width: min(240px, 52vw);
  object-fit: contain;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-left: auto;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(36, 113, 128, 0.28);
  background: #fff;
  overflow: hidden;
  flex-shrink: 0;
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-en);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.42rem 0.7rem;
  cursor: pointer;
  line-height: 1;
  transition: background 0.2s, color 0.2s;
}

.lang-btn.is-active {
  background: var(--brand);
  color: #fff;
}

.lang-btn:not(.is-active):hover {
  background: rgba(36, 113, 128, 0.08);
}

body.is-en .about-intro h2,
body.is-en .section-head h2.title-nowrap,
body.is-en .section-desc.title-nowrap,
body.is-en .contact-intro h2,
body.is-en .hero h1 {
  white-space: normal;
}

body.is-en .hero-eyebrow,
body.is-en .eyebrow {
  letter-spacing: 0.08em;
}

.site-nav a {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.55rem 1.2rem;
  border: 1px solid transparent;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

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

.site-nav a.is-active {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff !important;
}

.site-nav a.is-active:hover {
  background: #1a5560;
  border-color: #1a5560;
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 1.35rem;
  height: 1.5px;
  margin: 0.35rem auto;
  background: var(--brand);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--white);
  background: var(--brand-deep);
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0;
  transition: opacity 1s ease;
  z-index: 0;
}

.hero-media img.is-active {
  opacity: 1;
  z-index: 1;
}

.hero-veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(
      105deg,
      rgba(15, 45, 52, 0.88) 0%,
      rgba(20, 58, 66, 0.78) 28%,
      rgba(26, 85, 96, 0.45) 55%,
      rgba(26, 85, 96, 0.18) 100%
    ),
    linear-gradient(to top, rgba(15, 45, 52, 0.72) 0%, transparent 40%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(to right, black 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.35;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(var(--max), calc(100% - 3.5rem));
  margin: 0 auto 14vh;
  padding-top: calc(var(--header-h) + 5rem);
}

.hero-eyebrow {
  margin: 0 0 1.1rem;
  font-family: var(--font-en);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  font-weight: 600;
  letter-spacing: 0.18em;
  color: rgba(190, 230, 236, 0.95);
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.45);
  opacity: 0;
  animation: rise 1.05s var(--ease) 0.12s forwards;
}

.hero h1 {
  margin: 0 0 1.25rem;
  max-width: none;
  font-size: clamp(1.85rem, 4.2vw, 3rem);
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.35;
  color: #fff;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.55);
  white-space: nowrap;
  opacity: 0;
  animation: rise 1.05s var(--ease) 0.28s forwards;
}

.hero-lead {
  margin: 0 0 2.25rem;
  max-width: 26em;
  font-size: clamp(1.02rem, 1.6vw, 1.15rem);
  line-height: 1.85;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 1px 14px rgba(0, 0, 0, 0.5);
  opacity: 0;
  animation: rise 1.05s var(--ease) 0.42s forwards;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  opacity: 0;
  animation: rise 1.05s var(--ease) 0.55s forwards;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(26px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.05rem;
  padding: 0.7rem 1.7rem;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.1em;
  transition: transform 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--brand-mid);
  color: #fff;
}

.btn-primary:hover {
  background: #2d8a9a;
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: #fff;
}

.btn-ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

/* —— Trust strip —— */
.trust {
  background: var(--brand);
  color: #fff;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.trust-inner {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  padding: 1.35rem 0;
  overflow: hidden;
}

.trust-label {
  margin: 0;
  flex-shrink: 0;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.45);
  white-space: nowrap;
}

.trust-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2.25rem;
  align-items: center;
}

.trust-list li {
  font-family: var(--font-en);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.82);
  position: relative;
}

.trust-list li:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -1.2rem;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--brand-mid);
  transform: translateY(-50%);
  opacity: 0.8;
}

/* —— Sections common —— */
.section {
  padding: clamp(5rem, 11vw, 8rem) 0;
}

.eyebrow {
  margin: 0 0 0.9rem;
  font-family: var(--font-en);
  font-size: clamp(0.95rem, 1.4vw, 1.08rem);
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--brand-mid);
}

.eyebrow.invert,
.section-head.invert .eyebrow {
  color: rgba(232, 241, 242, 0.7);
}

.section-head {
  max-width: 38rem;
  margin-bottom: clamp(2.75rem, 5vw, 4rem);
}

.section-head:has(.title-nowrap) {
  max-width: none;
}

.section-head.invert {
  color: #fff;
}

.section-head h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.65rem, 3.2vw, 2.35rem);
}

.section-head h2.title-nowrap {
  white-space: nowrap;
  font-size: clamp(1.2rem, 2.8vw, 2.35rem);
}

.section-desc.title-nowrap {
  white-space: nowrap;
  max-width: none;
}

.section-desc {
  margin: 0;
  color: var(--ink-muted);
  font-size: 1.02rem;
}

.section-head.invert .section-desc {
  color: rgba(255, 255, 255, 0.65);
}

/* —— About —— */
.about {
  background: var(--white);
}

.about-intro {
  max-width: none;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.about-intro h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3.2vw, 2.5rem);
  white-space: nowrap;
}

.about-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: stretch;
  margin-bottom: clamp(3rem, 6vw, 4.5rem);
}

/* Equipment marquee — replaces former workshop photo */
.equip-marquee {
  margin: 0;
  overflow: hidden;
  min-height: 28rem;
  height: 100%;
  background: #f0f4f5;
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}

.equip-track {
  display: flex;
  width: max-content;
  height: 100%;
  min-height: 28rem;
  align-items: center;
  animation: equip-scroll 36s linear infinite;
  will-change: transform;
}

.equip-marquee:hover .equip-track {
  animation-play-state: paused;
}

.equip-group {
  display: flex;
  gap: 1rem;
  padding-right: 1rem;
  height: 100%;
  align-items: center;
}

.equip-item {
  margin: 0;
  flex: 0 0 auto;
  width: min(340px, 70vw);
  height: calc(100% - 2rem);
  max-height: 26rem;
  min-height: 240px;
  overflow: hidden;
  background: #fff;
}

.equip-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  background: #fff;
}

@keyframes equip-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (max-width: 768px) {
  .equip-marquee,
  .equip-track {
    min-height: 18rem;
  }

  .equip-item {
    width: min(260px, 75vw);
    min-height: 200px;
  }

  .equip-track {
    animation-duration: 28s;
  }
}

.about-lead {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.7;
  margin: 0 0 1.25rem;
  color: var(--brand);
}

.about-copy > p:not(.about-lead) {
  margin: 0 0 2rem;
  color: var(--ink-muted);
}

.about-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}

.about-metrics strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--brand-mid);
  line-height: 1.15;
  letter-spacing: 0.02em;
}

.about-metrics span {
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.pillar-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.pillar {
  padding: 2rem 1.5rem 0 0;
  border-right: 1px solid var(--line);
  padding-right: 1.75rem;
  margin-right: 1.75rem;
}

.pillar:last-child {
  border-right: 0;
  margin-right: 0;
  padding-right: 0;
}

.pillar-num {
  display: block;
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--brand-mid);
  margin-bottom: 1rem;
}

.pillar h3 {
  margin: 0 0 0.65rem;
  font-size: 1.1rem;
}

.pillar p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

/* —— Capabilities —— */
.capabilities {
  background: var(--brand-deep);
  color: #fff;
  padding-bottom: 0;
}

.capabilities .container {
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.cap-bands {
  display: grid;
  gap: 0;
}

.cap-band {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  height: 40.8rem;
  min-height: 0;
  border-top: 1px solid var(--line-light);
}

.cap-band.reverse {
  direction: rtl;
}

.cap-band.reverse > * {
  direction: ltr;
}

.cap-band figure {
  margin: 0;
  overflow: hidden;
  height: 100%;
  min-height: 0;
}

.cap-band img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1s var(--ease);
}

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

.cap-band-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2rem 2.5rem;
  background: var(--brand);
  overflow: hidden;
}

.cap-tag {
  margin: 0 0 0.6rem;
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: rgba(231, 241, 242, 0.55);
  text-transform: uppercase;
}

.cap-band-copy h3 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
}

.cap-band-copy > p {
  margin: 0 0 1rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 32em;
  font-size: 0.95rem;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cap-band-copy ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.3rem;
}

.cap-band-copy li {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.88);
  padding-left: 1.1rem;
  position: relative;
}

.cap-band-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 0.45rem;
  height: 1px;
  background: var(--brand-mid);
}

@media (max-width: 900px) {
  .cap-band {
    height: auto;
    min-height: 0;
  }

  .cap-band figure {
    height: 12rem;
  }

  .cap-band-copy {
    padding: 1.35rem 1.5rem;
  }

  .cap-band-copy > p {
    -webkit-line-clamp: 4;
  }
}

/* —— Vision —— */
.vision {
  background:
    linear-gradient(135deg, var(--brand-mid) 0%, var(--brand) 55%, var(--brand-deep) 100%);
  color: #fff;
  padding-block: clamp(4.5rem, 10vw, 7rem);
}

.vision-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: end;
}

.vision blockquote {
  margin: 0;
}

.vision blockquote p {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2.15rem);
  line-height: 1.5;
  letter-spacing: 0.04em;
  margin: 0;
}

.vision-side {
  display: grid;
  gap: 1.5rem;
  padding-left: 2rem;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.vision-item span {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 0.4rem;
}

.vision-item strong {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* —— Quality —— */
.quality {
  background: var(--tint-2);
}

.cred-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.cred {
  background: var(--white);
  padding: clamp(1.75rem, 3vw, 2.35rem);
}

.cred h3 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  color: var(--brand);
  position: relative;
  padding-bottom: 0.85rem;
}

.cred h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 2rem;
  height: 2px;
  background: var(--brand-mid);
}

.cred p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.98rem;
}

.quality-band {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 0;
  background: var(--brand);
  color: #fff;
  overflow: hidden;
}

.quality-band figure {
  margin: 0;
  min-height: 18rem;
}

.quality-band img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.quality-band-copy {
  padding: clamp(2rem, 4vw, 3.25rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.quality-band-copy h3 {
  margin: 0 0 1rem;
  font-size: 1.45rem;
}

.quality-band-copy p {
  margin: 0 0 1rem;
  color: rgba(255, 255, 255, 0.72);
}

.quality-note {
  margin-top: 0.5rem !important;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.92rem !important;
}

/* —— Timeline —— */
.timeline {
  background: var(--brand);
  color: #fff;
}

.timeline-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.milestone {
  padding: 2rem 1.25rem 0 0;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  min-height: 10rem;
}

.milestone:nth-child(5n) {
  border-right: 0;
}

.milestone::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--brand-mid);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(36, 113, 128, 0.35);
}

.milestone time {
  display: block;
  font-family: var(--font-en);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #9fd0d8;
  margin-bottom: 0.75rem;
}

.milestone p {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.65;
  padding-right: 0.5rem;
}

/* —— Contact —— */
.contact {
  background: var(--tint-2);
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.contact-intro h2 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  white-space: nowrap;
}

.contact-intro p:last-child {
  margin: 0;
  color: var(--ink-muted);
}

.contact-info {
  display: flex;
  align-items: stretch;
  gap: 0;
  background: var(--white);
  border-top: 3px solid var(--brand);
  padding: clamp(1.75rem, 3vw, 2.5rem) clamp(1.5rem, 3vw, 2.75rem);
}

.contact-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-width: 0;
}

.contact-divider {
  width: 1px;
  background: var(--line);
  margin: 0.25rem 2rem;
  flex-shrink: 0;
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--brand-mid);
}

.contact-value {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--brand);
  line-height: 1.3;
}

.contact-phone {
  text-decoration: none;
  transition: color 0.2s;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}

.contact-phone:hover {
  color: var(--brand-mid);
}

/* —— Footer —— */
.site-footer {
  background: var(--brand-deep);
  color: rgba(255, 255, 255, 0.65);
  padding: 3.25rem 0 2.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2rem;
}

.footer-brand .footer-logo {
  height: 3rem;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  background: #fff;
  padding: 0.4rem 0.55rem;
  margin-bottom: 1rem;
}

.footer-brand p {
  margin: 0;
  font-size: 0.88rem;
  max-width: 22em;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: flex-end;
  align-content: start;
}

.footer-nav a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: #fff;
}

.footer-copy {
  grid-column: 1 / -1;
  margin: 1rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.8rem;
  opacity: 0.7;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

.footer-beian {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-beian:hover {
  color: #fff;
}

/* Image slot fallback */
.img-slot {
  position: relative;
  background: var(--brand);
}

.img-slot[data-missing="true"]::after {
  content: attr(data-slot) " · 图片待替换";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  background: linear-gradient(145deg, var(--brand), var(--brand-mid));
  text-align: center;
  padding: 1rem;
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* —— Responsive —— */
@media (max-width: 1100px) {
  .pillar-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 0 1.5rem;
  }

  .pillar {
    border-right: 0;
    margin-right: 0;
    padding: 1.75rem 0;
    border-bottom: 1px solid var(--line);
  }

  .pillar:nth-child(odd) {
    padding-right: 1rem;
  }

  .timeline-track {
    grid-template-columns: repeat(2, 1fr);
  }

  .milestone {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.75rem 1rem 1.75rem 0;
    min-height: auto;
  }

  .milestone:nth-child(5n) {
    border-right: 0;
  }
}

@media (max-width: 900px) {
  .about-layout,
  .cap-band,
  .cap-band.reverse,
  .vision-grid,
  .quality-band,
  .contact-wrap,
  .footer-grid,
  .cred-grid {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .vision-side {
    padding-left: 0;
    border-left: 0;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }

  .footer-nav {
    justify-content: flex-start;
  }

  .trust-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .about-metrics {
    grid-template-columns: repeat(3, 1fr);
  }
}

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

  .header-actions {
    margin-left: auto;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto;
    margin-left: 0;
    background: #fff;
    box-shadow: 0 12px 24px rgba(26, 85, 96, 0.12);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.35rem 0 1rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s var(--ease), opacity 0.35s;
  }

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

  .site-nav a {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid rgba(36, 113, 128, 0.1);
  }

  .site-nav a.is-active {
    margin: 0;
    text-align: left;
    border-radius: 0;
  }

  .hero-content {
    margin-bottom: 16vh;
  }

  .hero-grid {
    display: none;
  }

  .about-metrics {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .pillar-row {
    grid-template-columns: 1fr;
  }

  .timeline-track {
    grid-template-columns: 1fr;
  }

  .contact-wrap {
    grid-template-columns: 1fr;
  }

  .contact-info {
    flex-direction: column;
    gap: 1.5rem;
  }

  .contact-divider {
    width: 100%;
    height: 1px;
    margin: 0;
  }

  .contact-intro h2 {
    white-space: normal;
  }

  .about-intro h2,
  .section-head h2.title-nowrap,
  .section-desc.title-nowrap {
    white-space: normal;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(1.45rem, 7vw, 2rem);
    white-space: normal;
  }

  .hero-lead {
    max-width: none;
  }

  .brand-logo {
    max-width: min(180px, 48vw);
    height: 2.2rem;
  }

  .cap-band {
    height: auto;
  }

  .cap-band figure {
    height: 14rem;
  }

  .equip-marquee,
  .equip-track {
    min-height: 16rem;
  }

  .stat-row {
    grid-template-columns: 1fr 1fr;
  }
}

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

  .hero-media img,
  .hero-eyebrow,
  .hero h1,
  .hero-lead,
  .hero-actions,
  .cap-band img,
  .equip-track {
    animation: none !important;
    transition: none !important;
    opacity: 1;
    transform: none;
  }

  .equip-marquee {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}