/* ==========================================================================
   奕云官网 · 设计系统
   明亮专业风 · 品牌绿色系（源自 Logo 主绿 #18D878）
   ========================================================================== */

:root {
  --ink: #0E211A;
  --text: #3E574C;
  --muted: #61796D;
  --line: #E1ECE6;
  --bg: #FFFFFF;
  --bg-soft: #F4FAF7;
  --brand: #0C9B5E;
  --brand-deep: #067247;
  --brand-bright: #18D878;
  --mint: #E8F8F0;
  --grad: linear-gradient(120deg, #0AA463 0%, #18D878 100%);
  --shadow-sm: 0 1px 2px rgba(14, 33, 26, 0.05);
  --shadow-md: 0 10px 30px -8px rgba(6, 114, 71, 0.14);
  --shadow-lg: 0 24px 50px -16px rgba(6, 114, 71, 0.22);
  --radius: 20px;
  --nav-h: 68px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
          "Hiragino Sans GB", "HarmonyOS Sans SC", "Microsoft YaHei",
          "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: rgba(24, 216, 120, 0.24); }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  color: var(--ink);
  line-height: 1.3;
  font-weight: 700;
  text-wrap: balance;
}

p { text-wrap: pretty; }

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: 24px;
}

/* ==========================================================================
   通用组件
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 12px;
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.25s ease, box-shadow 0.25s ease,
              border-color 0.25s ease, color 0.25s ease, background 0.25s ease;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(120deg, #077A4C 0%, #0C9B5E 55%, #16C56F 130%);
  box-shadow: 0 10px 24px -8px rgba(12, 155, 94, 0.55);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -10px rgba(12, 155, 94, 0.6);
}

.btn-ghost {
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.btn-ghost:hover {
  border-color: rgba(12, 155, 94, 0.45);
  color: var(--brand-deep);
  transform: translateY(-2px);
}

.btn-light {
  color: var(--brand-deep);
  background: #fff;
  box-shadow: 0 12px 28px -10px rgba(3, 40, 24, 0.5);
}
.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px -12px rgba(3, 40, 24, 0.55);
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--brand-deep);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
}

.section { padding: 104px 0; }
.section-soft { background: var(--bg-soft); }

.section-head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.section-head h2 {
  font-size: clamp(1.75rem, 3.2vw, 2.35rem);
  letter-spacing: 0.01em;
}
.section-sub {
  color: var(--muted);
  font-size: 16px;
}

/* 中文标题防拆词：整段一起换行 */
.no-orphan { white-space: nowrap; }
@media (max-width: 768px) {
  .no-orphan { white-space: normal; }
}

/* ==========================================================================
   导航栏
   ========================================================================== */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 4px 24px -12px rgba(14, 33, 26, 0.12);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.brand-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
}
.brand-name {
  font-size: 21px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.06em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--brand-deep); }

.nav-links .nav-cta {
  padding: 9px 22px;
  border-radius: 10px;
  color: #fff;
  font-weight: 600;
  background: linear-gradient(120deg, #077A4C 0%, #0C9B5E 60%, #16C56F 140%);
  box-shadow: 0 8px 18px -8px rgba(12, 155, 94, 0.6);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.nav-links .nav-cta:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 12px 24px -8px rgba(12, 155, 94, 0.65);
}

.nav-toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
}
.nav-toggle span {
  position: absolute;
  left: 11px;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, top 0.25s ease;
}
.nav-toggle span:nth-child(1) { top: 16px; }
.nav-toggle span:nth-child(2) { top: 24px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { top: 20px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { top: 20px; transform: rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  padding: calc(var(--nav-h) + 96px) 0 110px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(56% 48% at 82% 6%, rgba(24, 216, 120, 0.14) 0%, transparent 70%),
    radial-gradient(52% 44% at 12% 18%, rgba(10, 164, 99, 0.11) 0%, transparent 70%),
    linear-gradient(180deg, #F1FAF5 0%, #FFFFFF 86%);
}
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(6, 114, 71, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6, 114, 71, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(72% 64% at 50% 20%, #000 25%, transparent 100%);
  mask-image: radial-gradient(72% 64% at 50% 20%, #000 25%, transparent 100%);
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 18px;
  border: 1px solid rgba(12, 155, 94, 0.26);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--brand-deep);
  box-shadow: var(--shadow-sm);
}
.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-bright);
  box-shadow: 0 0 0 0 rgba(24, 216, 120, 0.5);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(24, 216, 120, 0.45); }
  70%  { box-shadow: 0 0 0 9px rgba(24, 216, 120, 0); }
  100% { box-shadow: 0 0 0 0 rgba(24, 216, 120, 0); }
}

.hero-title {
  margin-top: 28px;
  font-size: clamp(2.35rem, 5.6vw, 3.65rem);
  line-height: 1.22;
  letter-spacing: 0.015em;
}

.hero-sub {
  margin-top: 24px;
  max-width: 620px;
  font-size: 17px;
  color: var(--muted);
}

.hero-cta {
  margin-top: 40px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-trust {
  margin-top: 68px;
  display: flex;
  align-items: center;
  gap: 0;
}
.hero-trust li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 0 44px;
}
.hero-trust li + li { border-left: 1px solid var(--line); }
.hero-trust strong {
  font-size: 30px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.hero-trust span {
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* 首屏入场动画 */
.hero-inner > * {
  animation: rise 0.9s cubic-bezier(0.22, 0.65, 0.3, 1) both;
}
.hero-inner > *:nth-child(2) { animation-delay: 0.08s; }
.hero-inner > *:nth-child(3) { animation-delay: 0.16s; }
.hero-inner > *:nth-child(4) { animation-delay: 0.24s; }
.hero-inner > *:nth-child(5) { animation-delay: 0.34s; }
@keyframes rise {
  from { opacity: 0; transform: translateY(26px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   产品矩阵
   ========================================================================== */

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.product-card {
  display: flex;
  flex-direction: column;
  padding: 34px 30px 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
  background:
    linear-gradient(#fff, #fff) padding-box,
    linear-gradient(135deg, rgba(12, 155, 94, 0.55), rgba(24, 216, 120, 0.55)) border-box;
}

.product-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 22px;
}

.product-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  color: #fff;
  font-size: 22px;
  font-weight: 700;
}
.mark-leanpm { background: linear-gradient(135deg, #0C9B5E, #18D878); box-shadow: 0 10px 22px -8px rgba(12, 155, 94, 0.55); }
.mark-pcms   { background: linear-gradient(135deg, #067247, #0C9B5E); box-shadow: 0 10px 22px -8px rgba(6, 114, 71, 0.55); }
.mark-yopu   { background: linear-gradient(135deg, #0D9488, #18D878); box-shadow: 0 10px 22px -8px rgba(13, 148, 136, 0.55); }

.product-badge {
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--brand-deep);
  background: rgba(12, 155, 94, 0.1);
}
.badge-ai {
  color: #0F766E;
  background: rgba(13, 148, 136, 0.12);
}

.product-card h3 {
  font-size: 23px;
  letter-spacing: 0.01em;
}
.product-tag {
  margin-top: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand);
  letter-spacing: 0.02em;
}
.product-desc {
  margin-top: 14px;
  font-size: 15px;
  color: var(--text);
}

.product-feats {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.product-feats li {
  position: relative;
  padding-left: 26px;
  font-size: 14.5px;
  color: var(--muted);
}
.product-feats li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 7px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--brand);
  border-bottom: 2px solid var(--brand);
  transform: rotate(42deg);
}

.product-link {
  margin-top: auto;
  padding-top: 26px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 15px;
  font-weight: 600;
  color: var(--brand);
  transition: color 0.2s ease;
}
.product-link svg { transition: transform 0.25s ease; }
.product-link:hover { color: var(--brand-deep); }
.product-link:hover svg { transform: translateX(4px); }

/* ==========================================================================
   典型客户 · Logo 滚动墙
   ========================================================================== */

.marquee {
  display: flex;
  flex-direction: column;
  gap: 26px;
  margin-top: -8px;
}

.marquee-row {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 10%, #000 90%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 10%, #000 90%, transparent 100%);
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: scroll 36s linear infinite;
}
.track-reverse { animation-direction: reverse; }
.marquee-row:hover .marquee-track { animation-play-state: paused; }

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

.marquee-group {
  display: flex;
  align-items: center;
  gap: 84px;
  padding-right: 84px;
}

.client {
  white-space: nowrap;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #9BAFA5;
  transition: color 0.25s ease;
  cursor: default;
}
.client:hover { color: var(--brand-deep); }

/* ==========================================================================
   客户感言
   ========================================================================== */

.quote-grid {
  columns: 3;
  column-gap: 26px;
}

.quote-card {
  break-inside: avoid;
  margin-bottom: 26px;
  padding: 30px 28px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.quote-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.quote-card::before {
  content: "\201C";
  display: block;
  height: 30px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 52px;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.85;
}

.quote-text {
  font-size: 14.8px;
  line-height: 1.95;
  color: var(--text);
}

.quote-meta {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 12px;
}
.quote-meta b {
  display: block;
  font-size: 15px;
  color: var(--ink);
  line-height: 1.4;
}
.quote-meta span:not(.quote-avatar) {
  font-size: 13px;
  color: var(--muted);
}

.quote-avatar {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}
.av-1 { background: linear-gradient(135deg, #0C9B5E, #3EE6A0); }
.av-2 { background: linear-gradient(135deg, #067247, #0C9B5E); }
.av-3 { background: linear-gradient(135deg, #0D9488, #2DD4BF); }
.av-4 { background: linear-gradient(135deg, #15803D, #22C55E); }
.av-5 { background: linear-gradient(135deg, #0A7A49, #18D878); }
.av-6 { background: linear-gradient(135deg, #0F766E, #0C9B5E); }

/* ==========================================================================
   关于奕云
   ========================================================================== */

.about-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 72px;
  align-items: center;
}

.about-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: flex-start;
}
.about-copy h2 {
  font-size: clamp(1.7rem, 3vw, 2.2rem);
}
.about-copy > p:not(.eyebrow) {
  color: var(--text);
  font-size: 15.5px;
}

.about-culture {
  margin-top: 8px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-weight: 600;
  color: var(--ink);
  font-size: 15.5px;
}
.culture-chip {
  flex: none;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--grad);
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.stat-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 28px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.stat-card strong {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(120deg, #067247 0%, #0C9B5E 60%, #18D878 130%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-card span {
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: 0.03em;
}

/* ==========================================================================
   联系我们
   ========================================================================== */

#contact { padding-top: 40px; }

.contact-panel {
  position: relative;
  overflow: hidden;
  padding: 78px 48px;
  border-radius: 28px;
  text-align: center;
  color: #fff;
  background: linear-gradient(130deg, #06371F 0%, #0A7A49 58%, #13B269 125%);
  box-shadow: 0 30px 60px -20px rgba(6, 55, 31, 0.45);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(42% 60% at 88% 0%, rgba(62, 230, 160, 0.28) 0%, transparent 70%),
    radial-gradient(36% 52% at 4% 100%, rgba(24, 216, 120, 0.3) 0%, transparent 70%);
}
.contact-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 40px 40px;
  -webkit-mask-image: radial-gradient(70% 90% at 50% 50%, #000 30%, transparent 100%);
  mask-image: radial-gradient(70% 90% at 50% 50%, #000 30%, transparent 100%);
}

.contact-panel > * { position: relative; }

.contact-panel h2 {
  color: #fff;
  font-size: clamp(1.65rem, 3vw, 2.25rem);
}
.contact-sub {
  margin-top: 14px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.82);
}

.contact-items {
  margin-top: 38px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px 44px;
}
.contact-items li {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.92);
}
.contact-items a { transition: opacity 0.2s ease; }
.contact-items a:hover { opacity: 0.75; }

.contact-ico {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.contact-panel .btn-light { margin-top: 42px; }

/* ==========================================================================
   页脚
   ========================================================================== */

.footer {
  border-top: 1px solid var(--line);
  padding: 64px 0 36px;
  background: #fff;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}
.footer-brand p {
  font-size: 14.5px;
  color: var(--muted);
}

.footer-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ink);
  margin-bottom: 4px;
}
.footer-col a,
.footer-col span {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.7;
}
.footer-col a { transition: color 0.2s ease; }
.footer-col a:hover { color: var(--brand-deep); }

.footer-legal {
  margin-top: 52px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 24px;
}
.footer-legal p {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}
.footer-legal a { transition: color 0.2s ease; }
.footer-legal a:hover { color: var(--brand-deep); }
.footer-legal .beian-gongan {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}
.footer-legal .beian-gongan img {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ==========================================================================
   滚动渐显
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s cubic-bezier(0.22, 0.65, 0.3, 1),
              transform 0.8s cubic-bezier(0.22, 0.65, 0.3, 1);
  transition-delay: var(--d, 0s);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 1024px) {
  .product-grid { grid-template-columns: 1fr 1fr; }
  .quote-grid { columns: 2; }
  .about-inner { gap: 48px; }
}

@media (max-width: 768px) {
  .section { padding: 76px 0; }

  .nav-toggle { display: block; }
  .nav {
    background: rgba(255, 255, 255, 0.92);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
  }
  .nav-links {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 22px;
    background: #FFFFFF;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px -24px rgba(14, 33, 26, 0.2);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 13px 4px;
    font-size: 16px;
    border-bottom: 1px solid var(--bg-soft);
  }
  .nav-links .nav-cta {
    margin-top: 14px;
    text-align: center;
    padding: 13px 22px;
    border-bottom: none;
  }

  .hero { padding: calc(var(--nav-h) + 64px) 0 80px; }
  .hero-sub { font-size: 15.5px; }

  .hero-trust { margin-top: 52px; width: 100%; justify-content: center; }
  .hero-trust li { padding: 0 14px; flex: 1; max-width: none; }
  .hero-trust strong { font-size: 24px; }
  .hero-trust span { font-size: 12px; }

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

  .marquee-group { gap: 48px; padding-right: 48px; }
  .client { font-size: 17px; }

  /* 感言改为横向滑动 */
  .quote-grid {
    columns: auto;
    display: flex;
    gap: 16px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 4px 4px 18px;
    margin: 0 -24px;
    padding-inline: 24px;
    -webkit-overflow-scrolling: touch;
  }
  .quote-card {
    flex: 0 0 86%;
    max-width: 340px;
    margin-bottom: 0;
    scroll-snap-align: center;
  }

  .about-inner { grid-template-columns: 1fr; gap: 40px; }
  .about-stats { gap: 14px; }
  .stat-card { padding: 22px 20px; }
  .stat-card strong { font-size: 28px; }

  .contact-panel { padding: 56px 26px; border-radius: 22px; }
  .contact-items { flex-direction: column; align-items: center; gap: 16px; }

  .footer-main { grid-template-columns: 1fr; gap: 36px; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 400px) {
  .hero-cta { width: 100%; }
  .hero-cta .btn { flex: 1; padding-inline: 18px; }
}

/* ==========================================================================
   动效降级
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-inner > * { animation: none; }
  .pulse-dot { animation: none; }
  .marquee-track { animation: none; }
  .marquee-row {
    -webkit-mask-image: none;
    mask-image: none;
  }
  .marquee-track { flex-wrap: wrap; width: 100%; }
  .marquee-group[aria-hidden="true"] { display: none; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}