/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-body: #0A0A0A;
  --bg-card: #141414;
  --bg-elevated: #1A1A2E;
  --primary: #E8A838;
  --primary-light: rgba(232, 168, 56, 0.15);
  --text-primary: #FFFFFF;
  --text-secondary: #A0A0A0;
  --text-placeholder: #5A5A5A;
  --border-base: rgba(255, 255, 255, 0.08);
  --border-active: rgba(232, 168, 56, 0.3);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --font-cn: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-en: 'Space Grotesk', sans-serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-cn);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

button {
  font-family: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

/* body 锁定（弹窗打开时用） */
body.is-locked {
  overflow: hidden;
}

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

.wrap {
  padding: 0 20px;
}

/* ===== Animations ===== */
.animate-up {
  opacity: 1;
  transform: translateY(20px);
  transition: transform 0.7s var(--ease-out);
}

.animate-up.is-visible {
  transform: translateY(0);
}

/* ===== Header / Navbar ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 12px 0;
  transition: background 0.3s var(--ease-out),
              backdrop-filter 0.3s var(--ease-out),
              border-color 0.3s var(--ease-out),
              padding 0.3s var(--ease-out);
  background: transparent;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(10, 10, 10, 0.55);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 8px 0;
}

@supports (backdrop-filter: blur(20px)) {
  .site-header.is-scrolled {
    background: rgba(10, 10, 10, 0.4);
  }
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-primary);
  line-height: 1.2;
}

.brand-en {
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--primary);
  text-transform: uppercase;
  line-height: 1;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  background: none;
  border: none;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

.menu-toggle.is-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav menu */
.nav-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid var(--border-base);
}

.nav-menu.is-open {
  display: block;
}

.nav-menu ul {
  list-style: none;
  padding: 8px 20px 12px;
}

.nav-menu li {
  border-bottom: 1px solid var(--border-base);
}

.nav-menu li:last-child {
  border-bottom: none;
}

.nav-menu a {
  display: block;
  padding: 14px 0;
  font-size: 15px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.nav-menu a:active {
  color: var(--primary);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  height: 100vh;
  height: 100svh;
  min-height: 580px;
  overflow: hidden;
}

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

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.hero-slide.is-active {
  opacity: 1;
  pointer-events: auto;
}

.hero-slide .hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
}

.hero-slide.is-active .hero-content .hero-tag,
.hero-slide.is-active .hero-content .hero-heading,
.hero-slide.is-active .hero-content .hero-desc,
.hero-slide.is-active .hero-content .hero-cta {
  opacity: 1;
  transform: translateY(0);
}

.hero-slide .hero-content .hero-tag {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
}

.hero-slide .hero-content .hero-heading {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s;
}

.hero-slide .hero-content .hero-desc {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s;
}

.hero-slide .hero-content .hero-cta {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s;
}

.hero-dots {
  position: absolute;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.hero-dots .dot {
  width: 24px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
}

.hero-dots .dot.is-active {
  background: var(--primary);
  width: 32px;
}

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

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

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 10, 10, 0.45) 0%,
    rgba(10, 10, 10, 0.25) 45%,
    rgba(10, 10, 10, 0.9) 100%
  );
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  z-index: 2;
  text-align: center;
  padding: 0 28px;
}

.hero-tag {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 5px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 20px;
  opacity: 0.9;
}

.hero-heading {
  font-size: 34px;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 3px;
  margin-bottom: 18px;
}

.hero-heading .line {
  display: block;
}

.hero-heading .accent {
  color: var(--primary);
}

.hero-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 32px;
  letter-spacing: 0.5px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-size: 13px;
  letter-spacing: 2px;
  border-radius: var(--radius-md);
  transition: all 0.3s var(--ease-out);
}

.hero-cta:active {
  background: var(--primary);
  color: var(--bg-body);
}

.hero-cta svg {
  width: 16px;
  height: 16px;
}

.hero-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 2;
}

.hero-hint .label {
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--text-placeholder);
}

.hero-hint .bar {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--primary), transparent);
  animation: barPulse 2s ease-in-out infinite;
}

@keyframes barPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

/* ===== Section Common ===== */
.section {
  padding: 64px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 32px;
}

.section-label {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 5px;
  color: var(--primary);
  text-transform: uppercase;
  display: block;
  margin-bottom: 10px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 3px;
}

/* ===== About ===== */
.about {
  background: var(--bg-body);
}

.about-body {
  display: flex;
  flex-direction: column;
  gap: 28px;
  align-items: center;
}

.about-logo {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-base);
}

.about-logo img {
  width: 64px;
  height: 64px;
  object-fit: contain;
}

.about-text .lead {
  font-size: 17px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.6;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.85;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.stat-card {
  padding: 18px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-md);
  text-align: center;
  transition: border-color 0.3s var(--ease-out);
}

.stat-card:active {
  border-color: var(--border-active);
}

.stat-number {
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  display: block;
  line-height: 1;
}

.stat-unit {
  font-family: var(--font-en);
  font-size: 15px;
  color: var(--primary);
  margin-left: 2px;
}

.stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

/* ===== Services ===== */
.services {
  background: linear-gradient(
    180deg,
    var(--bg-body) 0%,
    rgba(26, 26, 46, 0.2) 50%,
    var(--bg-body) 100%
  );
}

.services-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.service-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 22px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-md);
  transition: border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
  position: relative;
}

.service-card:active {
  border-color: var(--border-active);
  transform: scale(0.97);
}

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  color: var(--primary);
  flex-shrink: 0;
}

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: 1px;
}

.service-card p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== Cases ===== */
.cases {
  background: var(--bg-body);
}

.cases-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.case-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 200px;
}

.case-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.case-card:active img {
  transform: scale(1.05);
}

.case-info {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 25%,
    rgba(10, 10, 10, 0.9) 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 18px;
}

.case-tag {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.case-info h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 2px;
  letter-spacing: 0.5px;
  line-height: 1.4;
}

.case-info p {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ===== Footer / Contact ===== */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-base);
  padding: 48px 0 24px;
}

.footer-main {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-about h2 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.footer-about .accent {
  color: var(--primary);
}

.footer-about .desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.8;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 13px;
}

.info-item svg {
  color: var(--primary);
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

/* Social */
.footer-social h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  letter-spacing: 1px;
}

.social-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.social-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 6px;
  background: var(--bg-body);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-md);
  transition: border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
  cursor: pointer;
}

.social-btn:active {
  border-color: var(--border-active);
  transform: scale(0.95);
}

.social-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  overflow: hidden;
}

.social-icon svg,
.social-icon img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.social-icon.xhs { background: transparent; }
.social-icon.dy  { background: transparent; }
.social-icon.wx  { background: transparent; }
.social-icon.tel { background: var(--primary-light); color: var(--primary); }
.social-icon.tel svg { width: 20px; height: 20px; }

.social-btn span {
  font-size: 11px;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

/* ===== Contact Form ===== */
.footer-form {
  padding-top: 28px;
  border-top: 1px solid var(--border-base);
}

.footer-form .section-head {
  margin-bottom: 20px;
}

.footer-form .section-title {
  font-size: 17px;
  letter-spacing: 2px;
}

.form-group {
  margin-bottom: 12px;
}

.form-control {
  width: 100%;
  padding: 13px 16px;
  background: var(--bg-body);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-cn);
  line-height: 1.6;
  transition: border-color 0.3s var(--ease-out), background 0.3s var(--ease-out);
  -webkit-appearance: none;
  appearance: none;
  outline: none;
}

.form-control::placeholder {
  color: var(--text-placeholder);
}

.form-control:focus {
  border-color: var(--border-active);
  background: rgba(232, 168, 56, 0.03);
}

textarea.form-control {
  min-height: 96px;
  resize: vertical;
}

.btn-submit {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  background: var(--primary);
  color: var(--bg-body);
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-cn);
  letter-spacing: 2px;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
  margin-top: 4px;
}

.btn-submit:active {
  opacity: 0.85;
  transform: scale(0.98);
}

.btn-submit svg {
  width: 16px;
  height: 16px;
}

/* Footer bottom */
.footer-bottom {
  padding-top: 20px;
  border-top: 1px solid var(--border-base);
  text-align: center;
}

.footer-bottom p {
  font-size: 11px;
  color: var(--text-placeholder);
  margin-bottom: 3px;
  line-height: 1.6;
}

/* ===== QR Code Modal ===== */
.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease-out), visibility 0.25s var(--ease-out);
}

.qr-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.qr-mask {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.qr-card {
  position: relative;
  width: calc(100% - 64px);
  max-width: 300px;
  padding: 32px 20px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-lg);
  text-align: center;
  transform: translateY(16px) scale(0.96);
  transition: transform 0.35s var(--ease-out);
}

.qr-modal.is-open .qr-card {
  transform: translateY(0) scale(1);
}

.qr-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-placeholder);
  border-radius: 50%;
}

.qr-close:active {
  color: var(--text-primary);
}

.qr-close svg {
  width: 18px;
  height: 18px;
}

.qr-head-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.qr-head-icon svg {
  width: 26px;
  height: 26px;
}

.qr-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.qr-code {
  display: flex;
  justify-content: center;
  padding: 14px;
  background: #fff;
  border-radius: 10px;
  margin-bottom: 14px;
}

.qr-code svg {
  display: block;
}

.qr-code img {
  width: 160px;
  height: 160px;
}

.qr-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Case Detail Page ===== */
.case-detail {
  padding-top: 90px;
  padding-bottom: 40px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 20px;
  text-decoration: none;
}

.back-link svg {
  width: 18px;
  height: 18px;
}

.back-link:active {
  color: var(--primary);
}

.case-hero {
  width: 100%;
  margin-bottom: 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.case-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.case-meta {
  margin-bottom: 32px;
}

.case-meta .case-tag {
  display: inline-block;
  margin-bottom: 16px;
}

.case-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 10px;
  color: var(--text-primary);
  font-family: var(--font-cn);
}

.case-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.case-date {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-placeholder);
}

.case-date svg {
  width: 16px;
  height: 16px;
}

.case-section {
  margin-bottom: 36px;
}

.case-section h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 3px solid var(--primary);
  font-family: var(--font-cn);
}

.case-section > p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.highlight-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.highlight-list li {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: var(--card-bg);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  border: 1px solid var(--border-base);
}

.highlight-list li:last-child {
  margin-bottom: 0;
}

.hl-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-en);
  line-height: 1;
  flex-shrink: 0;
  padding-top: 2px;
}

.highlight-list h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  font-family: var(--font-cn);
}

.highlight-list p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.service-tags span {
  padding: 6px 14px;
  background: var(--card-bg);
  border: 1px solid var(--border-base);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

.case-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.case-gallery img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-sm);
  display: block;
}

.case-next {
  margin-top: 20px;
  padding-top: 28px;
  border-top: 1px solid var(--border-base);
}

.case-next > p {
  font-size: 12px;
  color: var(--text-placeholder);
  letter-spacing: 1px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.next-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px;
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-base);
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.next-card:active {
  transform: scale(0.98);
  border-color: var(--primary);
}

.next-card img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.next-info {
  flex: 1;
  min-width: 0;
}

.next-info .case-tag {
  font-size: 11px;
  padding: 2px 8px;
  margin-bottom: 6px;
}

.next-info h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-family: var(--font-cn);
}

.next-card svg {
  width: 20px;
  height: 20px;
  color: var(--text-placeholder);
  flex-shrink: 0;
}

.footer-tel {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 13px;
  text-decoration: none;
}

.footer-tel svg {
  width: 14px;
  height: 14px;
}

/* ===== Safe area ===== */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .site-footer {
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
  }
  .site-header {
    padding-top: calc(12px + env(safe-area-inset-top));
  }
  .site-header.is-scrolled {
    padding-top: calc(8px + env(safe-area-inset-top));
  }
}

/* ===== 案例详情页（参考易优CMS结构） ===== */
.n-banner {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, #1A1A2E 0%, #0A0A0A 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.n-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('https://028.sevenit.cn/cdn/2026/images/hero-bg.jpeg') center/cover no-repeat;
  opacity: 0.25;
}

.n-banner::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(10,10,10,0.3) 0%, rgba(10,10,10,0.7) 100%);
}

.banner-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.banner-en {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.banner-cn {
  font-family: var(--font-cn);
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
}

.n-container {
  background: var(--bg-primary);
  padding: 20px 0 0;
}

.n-news-detail {
  padding: 0 16px 30px;
}

/* 文章标题区 */
.ar-title {
  padding: 10px 0 20px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.ar-title h3 {
  font-family: var(--font-cn);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 12px;
}

.ar-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.meta-item svg {
  width: 14px;
  height: 14px;
  color: var(--primary);
}

/* 文章内容 */
.ar-article {
  font-family: var(--font-cn);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-primary);
}

.ar-article p {
  margin-bottom: 20px;
}

.ar-article img {
  display: block;
  margin: 0 auto 16px;
  border-radius: 6px;
  max-width: 100%;
}

/* 上下篇 */
.fanye {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.fanye-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background: var(--card-bg);
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.2s;
}

.fanye-item.has-link:active {
  background: var(--card-bg-hover);
}

.fanye-item.prev {
  border-left: 3px solid var(--border-color);
}

.fanye-item.next {
  border-left: 3px solid var(--primary);
}

.fanye-label {
  font-size: 12px;
  color: var(--text-secondary);
}

.fanye-title {
  font-size: 14px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== 滚动进度条 ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), #F5C563);
  z-index: 1000;
  transition: width 0.08s linear;
  pointer-events: none;
}

/* ===== 返回顶部 ===== */
.back-to-top {
  position: fixed;
  right: 16px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(232, 168, 56, 0.95);
  border: none;
  color: #0A0A0A;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 20px rgba(232, 168, 56, 0.4);
  backdrop-filter: blur(12px);
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:active {
  transform: translateY(0) scale(0.92);
  box-shadow: 0 2px 8px rgba(232, 168, 56, 0.3);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  margin: 12px auto;
  display: block;
}

/* ===== 图片懒加载占位 ===== */
img {
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

img.is-loaded {
  animation: imgFadeIn 0.6s ease;
}

@keyframes imgFadeIn {
  from { opacity: 0.7; transform: scale(1.02); }
  to { opacity: 1; transform: scale(1); }
}

/* ===== 按钮点击波纹效果 ===== */
.btn-primary, .btn-submit {
  position: relative;
  overflow: hidden;
}

.btn-primary:active, .btn-submit:active {
  transform: scale(0.97);
}

/* ===== 卡片浮动阴影 hover ===== */
.case-card:active {
  transform: scale(0.98);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.case-card:active .case-card__img img {
  transform: scale(1.05);
}

/* ===== 表单成功提示 ===== */
.form-success {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  background: rgba(20, 20, 20, 0.98);
  border: 1px solid rgba(232, 168, 56, 0.3);
  border-radius: 12px;
  padding: 32px 28px;
  text-align: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.form-success.is-visible {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: auto;
}

.form-success-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: rgba(232, 168, 56, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.form-success-icon svg {
  width: 28px;
  height: 28px;
  stroke-width: 2.5;
}

.form-success h4 {
  font-size: 18px;
  color: var(--text-primary);
  margin: 0 0 6px;
  font-weight: 600;
}

.form-success p {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
}

.form-success-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  backdrop-filter: blur(4px);
}

.form-success-mask.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ===== 数字统计加速动画 ===== */
.stat-card.is-counting .stat-num {
  animation: numPulse 0.6s ease-out;
}

@keyframes numPulse {
  0% { transform: scale(0.8); opacity: 0; }
  60% { transform: scale(1.08); }
  100% { transform: scale(1); opacity: 1; }
}

/* ===== 导航栏菜单项点击反馈 ===== */
.nav-menu li a:active,
.nav-menu li a.is-active {
  color: var(--accent);
  transform: translateX(4px);
}

.nav-menu li a.is-active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 16px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-menu li a {
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

/* ===== 标签/服务卡片 点击效果 ===== */
.service-card:active {
  transform: scale(0.97);
  box-shadow: 0 4px 12px rgba(232, 168, 56, 0.15);
}

.service-card {
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== hero 指示点点击反馈 ===== */
.hero-dot {
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-dot:active {
  transform: scale(1.2);
}

/* ===== 社交按钮点击上浮 ===== */
.social-btn:active {
  transform: translateY(-4px);
}

.social-btn {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== 底部版权信息渐变出现 ===== */
.footer-bottom {
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ===== 案例图片点击预览（放大效果） ===== */
.case-gallery-item:active img {
  transform: scale(0.98);
  filter: brightness(0.9);
}

/* ===== 案例加载更多 ===== */
.load-more-wrap {
  text-align: center;
  margin-top: 40px;
}

.load-more-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 36px;
  background: rgba(232, 168, 56, 0.08);
  border: 1px solid rgba(232, 168, 56, 0.4);
  border-radius: 100px;
  color: var(--accent);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  font-family: inherit;
  min-height: 48px;
}

.load-more-btn svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.load-more-btn:active {
  transform: scale(0.96);
  background: rgba(232, 168, 56, 0.15);
}

.load-more-btn.is-loading {
  opacity: 0.6;
  pointer-events: none;
}

.load-more-btn.is-loading svg {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.load-more-btn.is-end {
  opacity: 0.4;
  border-color: rgba(255, 255, 255, 0.1);
  background: transparent;
  color: var(--text-secondary);
  cursor: default;
}

.load-more-btn.is-end svg {
  display: none;
}

.load-more-btn svg.is-hide {
  display: none;
}

/* ===== 图片预览弹窗（详情页） ===== */
.img-preview-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 3000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.img-preview-mask.is-open {
  display: flex;
}

.img-preview-mask.is-visible {
  opacity: 1;
}

.img-preview-big {
  max-width: 92vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 8px;
  transform: scale(0.9);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.img-preview-mask.is-visible .img-preview-big {
  transform: scale(1);
}

.img-preview-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(12px);
}

.ar-article img {
  cursor: zoom-in;
}