/* ============================================================
   贵州薏城文化有限责任公司 官网样式
   YICHENG CULTURE - Premium Corporate Website
   配色：植物绿 + 自然浅色（无黑色）
   ============================================================ */

:root {
  --bg-0: #f6faf2;            /* 主背景 植物浅绿白 */
  --bg-1: #eaf3e1;            /* 次级背景 浅绿 */
  --bg-2: #ffffff;            /* 卡片背景 */
  --bg-3: #f0f8e9;            /* 卡片悬浮 */
  --green: #2f7d32;           /* 植物绿主色 */
  --green-light: #57a85c;     /* 亮绿 */
  --green-dark: #1b5e20;      /* 深绿 */
  --green-line: rgba(47,125,50,.22);
  --text: #2c3a2e;            /* 主文字 深绿灰 */
  --text-2: #4d5f50;          /* 次级文字 */
  --text-3: #7c8d7e;          /* 弱文字 */
  --border: #d7e6cc;
  --serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'SimSun', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --shadow: 0 24px 60px rgba(47,125,50,.13);
  --ease: cubic-bezier(.22,.61,.36,1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--sans);
  background: var(--bg-0);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
b, strong { font-weight: 600; color: var(--green-dark); }
.gold-text { color: var(--green-light); }

.container {
  width: min(1200px, 92%);
  margin-inline: auto;
}

/* ---------- 通用区块 ---------- */
.section { padding: 110px 0; position: relative; }
.section:nth-of-type(even) { background: var(--bg-1); }

.section-head { text-align: center; margin-bottom: 64px; }

.section-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .42em;
  color: var(--green);
  text-transform: uppercase;
  padding-bottom: 14px;
  position: relative;
}
.section-tag::after {
  content: '';
  position: absolute;
  left: 50%; bottom: 0;
  transform: translateX(-50%);
  width: 56px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(30px, 4.6vw, 44px);
  font-weight: 600;
  letter-spacing: .08em;
  margin: 18px 0 14px;
  color: var(--green-dark);
}

.section-desc { color: var(--text-3); font-size: 16px; letter-spacing: .04em; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 40px;
  font-size: 15px;
  letter-spacing: .12em;
  border-radius: 2px;
  transition: all .35s var(--ease);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-gold {
  background: linear-gradient(135deg, var(--green-light), var(--green) 55%, var(--green-dark));
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(47,125,50,.28);
}
.btn-gold:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(47,125,50,.38);
}
.btn-ghost {
  border-color: var(--green-line);
  color: var(--green);
  background: rgba(47,125,50,.05);
}
.btn-ghost:hover {
  background: rgba(47,125,50,.12);
  border-color: var(--green);
  transform: translateY(-3px);
}

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  transition: all .4s var(--ease);
  padding: 22px 0;
  background: transparent;
}
.site-header.scrolled {
  padding: 12px 0;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--green-line);
  box-shadow: 0 8px 30px rgba(47,125,50,.12);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { width: 42px; height: 42px; flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: .16em;
  color: var(--green-dark);
}
.brand-text small {
  font-size: 9px;
  letter-spacing: .34em;
  color: var(--green);
  text-transform: uppercase;
}

.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  position: relative;
  padding: 10px 16px;
  font-size: 14.5px;
  letter-spacing: .1em;
  color: var(--text-2);
  transition: color .3s;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 1px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav-link:hover, .nav-link.active { color: var(--green); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-cta {
  margin-left: 14px;
  border: 1px solid var(--green);
  color: var(--green);
  padding: 10px 26px;
  border-radius: 2px;
}
.nav-cta:hover { background: rgba(47,125,50,.1); }
.nav-cta::after { display: none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 26px; height: 2px;
  background: var(--green);
  transition: all .3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Hero 首屏
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 30%;
  transform: scale(1.06);
  animation: heroZoom 18s var(--ease) forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.12); }
  to   { transform: scale(1.06); }
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,.10) 0%, rgba(246,250,242,.45) 45%, var(--bg-0) 100%),
    radial-gradient(ellipse at 30% 40%, rgba(87,168,92,.18), transparent 60%);
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding-top: 60px;
}
.hero-eyebrow {
  font-size: 13px;
  letter-spacing: .5em;
  color: var(--green-dark);
  text-transform: uppercase;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 1s var(--ease) .2s forwards;
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(38px, 6.4vw, 72px);
  font-weight: 600;
  letter-spacing: .14em;
  color: #14532d;
  text-shadow: 0 2px 24px rgba(255,255,255,.7);
  margin-bottom: 26px;
  opacity: 0;
  animation: fadeUp 1s var(--ease) .45s forwards;
}
.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  letter-spacing: .22em;
  color: #33503a;
  line-height: 2;
  margin-bottom: 46px;
  opacity: 0;
  animation: fadeUp 1s var(--ease) .7s forwards;
}
.hero-actions {
  display: flex;
  gap: 22px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 1s var(--ease) .95s forwards;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(34px); }
  to   { opacity: 1; transform: translateY(0); }
}

.scroll-hint {
  position: absolute;
  bottom: 34px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-3);
  font-size: 12px;
  letter-spacing: .3em;
}
.mouse {
  width: 26px; height: 42px;
  border: 1.5px solid rgba(27,94,32,.5);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.wheel {
  width: 3px; height: 8px;
  background: var(--green);
  border-radius: 2px;
  animation: wheelDown 1.8s ease infinite;
}
@keyframes wheelDown {
  0% { opacity: 1; transform: translateY(0); }
  70% { opacity: 0; transform: translateY(14px); }
  100% { opacity: 0; transform: translateY(14px); }
}

/* ============================================================
   数据统计条
   ============================================================ */
.stats {
  background: linear-gradient(135deg, #e2efd7, #eaf3e1 60%, #e2efd7);
  border-top: 1px solid var(--green-line);
  border-bottom: 1px solid var(--green-line);
  padding: 58px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.stat-item {
  text-align: center;
  padding: 10px;
  position: relative;
}
.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -15px; top: 50%;
  transform: translateY(-50%);
  width: 1px; height: 56px;
  background: var(--green-line);
}
.stat-num {
  font-family: var(--serif);
  font-size: clamp(40px, 5vw, 58px);
  font-weight: 600;
  color: var(--green);
  display: block;
  line-height: 1.2;
}
.stat-label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: .28em;
  color: var(--text-3);
}

/* ============================================================
   关于我们
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: center;
}
.about-media { position: relative; }
.about-img-wrap {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.about-img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, transparent 55%, rgba(47,125,50,.28));
}
.about-img-wrap img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform .8s var(--ease);
}
.about-media:hover .about-img-wrap img { transform: scale(1.05); }
.about-badge {
  position: absolute;
  right: -18px; bottom: 34px;
  z-index: 2;
  background: linear-gradient(135deg, var(--green-light), var(--green));
  color: #ffffff;
  padding: 18px 26px;
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 16px 40px rgba(47,125,50,.3);
}
.about-badge strong {
  font-family: var(--serif);
  font-size: 34px;
  line-height: 1;
  color: #ffffff;
}
.about-badge span { font-size: 12px; letter-spacing: .1em; margin-top: 6px; }

.about-content .about-lead {
  font-family: var(--serif);
  font-size: 18.5px;
  color: var(--green);
  margin-bottom: 20px;
}
.about-content p { color: var(--text-2); margin-bottom: 16px; }

.about-info {
  margin-top: 28px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 30px;
}
.about-info li {
  display: flex;
  flex-direction: column;
  font-size: 14px;
}
.about-info span { color: var(--text-3); font-size: 12.5px; letter-spacing: .08em; }
.about-info b { color: var(--text); font-weight: 500; }

/* ============================================================
   核心产品 · 元宝管理系统
   ============================================================ */
.product { background: var(--bg-1); }
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 60px;
  align-items: center;
}
.product-text h3 {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: .06em;
  margin-bottom: 22px;
  color: var(--green-dark);
}
.product-text p { color: var(--text-2); margin-bottom: 24px; }
.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}
.product-tags span {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--green);
  border: 1px solid var(--green-line);
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(47,125,50,.06);
}

/* 仪表盘 Mockup */
.product-dash { position: relative; }
.product-dash::before {
  content: '';
  position: absolute;
  inset: -8% -6%;
  background: radial-gradient(ellipse at center, rgba(87,168,92,.16), transparent 70%);
  z-index: 0;
  pointer-events: none;
}
.dash {
  position: relative;
  z-index: 1;
  display: flex;
  background: #ffffff;
  border: 1px solid var(--green-line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  height: 420px;
  font-family: var(--sans);
}
.dash-side {
  width: 168px;
  flex-shrink: 0;
  background: #eef6e7;
  border-right: 1px solid var(--border);
  padding: 18px 0;
}
.dash-logo {
  width: 40px; height: 40px;
  margin: 0 16px 18px;
  background: linear-gradient(135deg, var(--green-light), var(--green-dark));
  color: #ffffff;
  font-family: var(--serif);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 18px;
}
.dash-menu { display: flex; flex-direction: column; }
.dash-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 12px;
  color: var(--text-3);
  white-space: nowrap;
}
.dash-item i {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #b5cfae;
  flex-shrink: 0;
}
.dash-item.active {
  color: var(--green);
  background: linear-gradient(90deg, rgba(47,125,50,.14), transparent);
  border-left: 2px solid var(--green);
}
.dash-item.active i { background: var(--green); }

.dash-main { flex: 1; padding: 20px; display: flex; flex-direction: column; min-width: 0; }
.dash-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.dash-title { font-size: 14px; font-weight: 600; color: var(--green-dark); letter-spacing: .05em; }
.dash-user {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green-light), var(--green-dark));
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
}
.dash-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 14px;
}
.dash-card {
  background: #f5faef;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
}
.dash-card b { font-size: 19px; color: var(--green); font-weight: 600; }
.dash-card span { font-size: 11px; color: var(--text-3); }
.dash-card em {
  font-style: normal;
  font-size: 10.5px;
  color: #2f9e44;
  margin-top: 4px;
}
.dash-chart {
  flex: 1;
  background: #f5faef;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 16px 10px;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.chart-bars {
  flex: 1;
  display: flex;
  align-items: flex-end;
  gap: 8px;
}
.chart-bars span {
  flex: 1;
  height: var(--h);
  min-height: 8px;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(180deg, var(--green-light), rgba(47,125,50,.25));
  opacity: .85;
  animation: barGrow 1.2s var(--ease) both;
  transform-origin: bottom;
}
.chart-bars span:nth-child(2) { animation-delay: .08s; }
.chart-bars span:nth-child(3) { animation-delay: .16s; }
.chart-bars span:nth-child(4) { animation-delay: .24s; }
.chart-bars span:nth-child(5) { animation-delay: .32s; }
.chart-bars span:nth-child(6) { animation-delay: .4s; }
.chart-bars span:nth-child(7) { animation-delay: .48s; }
@keyframes barGrow {
  from { transform: scaleY(0); }
  to   { transform: scaleY(1); }
}
.chart-line {
  margin-top: 12px;
  height: 1px;
  background: var(--border);
  position: relative;
}
.chart-line::after {
  content: '';
  position: absolute;
  inset: 0;
  width: 30%;
  background: var(--green);
  animation: lineMove 3s ease infinite;
}
@keyframes lineMove {
  0% { left: 0; }
  50% { left: 70%; }
  100% { left: 0; }
}
.dash-foot {
  margin-top: 12px;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-3);
}
.ai-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #2f9e44;
  margin-right: 5px;
  animation: pulse 2s ease infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

.product-features {
  margin-top: 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}
.pf-col {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 4px;
  padding: 28px 34px;
}
.pf-col h4 {
  font-family: var(--serif);
  font-size: 19px;
  color: var(--green);
  margin-bottom: 12px;
  letter-spacing: .1em;
}
.pf-col p { font-size: 14px; color: var(--text-2); line-height: 2; }

/* ============================================================
   服务项目
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.service-card {
  position: relative;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 42px 34px 34px;
  transition: all .4s var(--ease);
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s var(--ease);
}
.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--green);
  background: var(--bg-3);
  box-shadow: var(--shadow);
}
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 58px; height: 58px;
  margin-bottom: 22px;
  border: 1px solid var(--green-line);
  border-radius: 50%;
  background: rgba(47,125,50,.08);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.service-icon::after {
  content: '';
  position: absolute;
  inset: 9px;
  border: 1px solid var(--green-line);
  border-radius: 50%;
}
.service-icon svg { width: 26px; height: 26px; }

.service-card h3 {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: .08em;
  margin-bottom: 12px;
  color: var(--green-dark);
}
.service-card p { font-size: 14.5px; color: var(--text-2); line-height: 1.9; }
.service-note {
  display: block;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  font-size: 12.5px;
  color: var(--green);
  letter-spacing: .04em;
}

/* 服务图标（内联SVG，绿色描边） */
.sv-icon svg, .live-icon svg, .ad-icon svg,
.group-icon svg, .ai-icon svg, .seo-icon svg { width: 26px; height: 26px; }

/* ============================================================
   业务范围
   ============================================================ */
.scope { background: var(--bg-1); }
.scope-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.scope-item {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 34px 30px;
  transition: all .35s var(--ease);
}
.scope-item:hover {
  border-color: var(--green);
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}
.scope-item h3 {
  font-family: var(--serif);
  font-size: 19px;
  color: var(--green);
  letter-spacing: .06em;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--green-line);
}
.scope-item li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 2.1;
}
.scope-item li::before {
  content: '';
  position: absolute;
  left: 0; top: 1.05em;
  width: 6px; height: 6px;
  border: 1px solid var(--green);
  transform: rotate(45deg);
}

/* ============================================================
   核心优势
   ============================================================ */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.adv-item {
  position: relative;
  padding: 38px 34px;
  background: linear-gradient(160deg, #ffffff, #edf5e4);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  transition: all .4s var(--ease);
}
.adv-item:hover {
  border-color: var(--green);
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}
.adv-num {
  position: absolute;
  top: 10px; right: 20px;
  font-family: var(--serif);
  font-size: 64px;
  font-weight: 700;
  color: rgba(47,125,50,.12);
  line-height: 1;
}
.adv-item h3 {
  position: relative;
  font-family: var(--serif);
  font-size: 21px;
  color: var(--green-dark);
  letter-spacing: .08em;
  margin-bottom: 14px;
}
.adv-item p {
  position: relative;
  font-size: 14.5px;
  color: var(--text-2);
  line-height: 1.95;
}

/* ============================================================
   合作客户
   ============================================================ */
.cases { background: var(--bg-1); }
.cases-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  margin-bottom: 46px;
}
.case-big {
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
  height: 380px;
}
.case-big img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .8s var(--ease);
}
.case-big:hover img { transform: scale(1.06); }
.case-big::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(27,94,32,.85));
}
.case-big-caption {
  position: absolute;
  left: 30px; right: 30px; bottom: 26px;
  z-index: 2;
}
.case-big-caption h3 {
  font-family: var(--serif);
  font-size: 24px;
  color: #ffffff;
  letter-spacing: .1em;
  margin-bottom: 6px;
}
.case-big-caption p { font-size: 13.5px; color: rgba(255,255,255,.85); letter-spacing: .06em; }

.clients-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.clients-list li {
  font-family: var(--serif);
  font-size: 15.5px;
  letter-spacing: .12em;
  color: var(--text-2);
  padding: 12px 30px;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: var(--bg-2);
  transition: all .3s;
}
.clients-list li:hover {
  color: var(--green);
  border-color: var(--green);
  background: rgba(47,125,50,.08);
}

/* ============================================================
   发展规划
   ============================================================ */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.plan-item {
  text-align: center;
  padding: 46px 34px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all .4s var(--ease);
  position: relative;
}
.plan-item:hover {
  transform: translateY(-6px);
  border-color: var(--green);
  box-shadow: var(--shadow);
}
.plan-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px; height: 72px;
  border-radius: 50%;
  border: 1px solid var(--green-line);
  background: rgba(47,125,50,.08);
  margin-bottom: 24px;
  position: relative;
}
.plan-icon::after {
  content: '';
  position: absolute;
  inset: 7px;
  border: 1px dashed var(--green-line);
  border-radius: 50%;
}
.plan-item h3 {
  font-family: var(--serif);
  font-size: 21px;
  color: var(--green-dark);
  letter-spacing: .08em;
  margin-bottom: 12px;
}
.plan-item p { font-size: 14.5px; color: var(--text-2); line-height: 1.95; }

/* ============================================================
   联系我们
   ============================================================ */
.contact { background: var(--bg-1); }
.contact-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 26px;
}
.contact-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 40px 42px;
}
.contact-card h3 {
  font-family: var(--serif);
  font-size: 22px;
  color: var(--green);
  letter-spacing: .1em;
  margin-bottom: 26px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--green-line);
}
.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--border);
}
.contact-list li:last-child { border-bottom: none; }
.c-icon {
  width: 44px; height: 44px;
  flex-shrink: 0;
  border: 1px solid var(--green-line);
  border-radius: 50%;
  background: rgba(47,125,50,.08);
  position: relative;
}
.c-icon svg { width: 20px; height: 20px; position: absolute; inset: 0; margin: auto; }
.contact-list li div { display: flex; flex-direction: column; }
.contact-list small { font-size: 12px; color: var(--text-3); letter-spacing: .12em; margin-bottom: 3px; }
.contact-list b { font-size: 16.5px; color: var(--text); font-weight: 500; letter-spacing: .04em; }
.contact-list a:hover { color: var(--green); }
.contact-list em { font-style: normal; font-size: 12px; color: var(--text-3); margin-top: 3px; }

.contact-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}
.contact-tags li {
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--text-2);
  border: 1px solid var(--border);
  padding: 7px 18px;
  border-radius: 100px;
  background: rgba(47,125,50,.05);
}
.contact-tip {
  font-size: 14px;
  color: var(--text-3);
  line-height: 2;
  border-left: 3px solid var(--green);
  padding-left: 18px;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background: #1a3a1e;
  border-top: 1px solid var(--green-line);
  padding: 56px 0 40px;
  text-align: center;
}
.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 20px;
}
.footer-brand strong {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: .12em;
  color: #ffffff;
  display: block;
}
.footer-brand span {
  font-size: 10px;
  letter-spacing: .3em;
  color: #9fce94;
  text-transform: uppercase;
}
.footer-slogan {
  font-family: var(--serif);
  color: #c9ddc2;
  letter-spacing: .2em;
  font-size: 15px;
  margin-bottom: 18px;
}
.footer-meta { font-size: 13.5px; color: #a9c4a0; line-height: 2; }
.footer-copy {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid #2e4f33;
  font-size: 12.5px;
  color: #8fae86;
  letter-spacing: .06em;
}
.footer-copy a { color: #9fce94; }

/* ============================================================
   回到顶部
   ============================================================ */
.back-top {
  position: fixed;
  right: 30px; bottom: 30px;
  z-index: 900;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid var(--green);
  background: rgba(255,255,255,.92);
  color: var(--green);
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all .35s var(--ease);
}
.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover {
  background: var(--green);
  color: #ffffff;
}

/* ============================================================
   滚动淡入动画
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .services-grid, .scope-grid, .advantage-grid, .plan-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .product-grid { grid-template-columns: 1fr; gap: 44px; }
  .product-dash { max-width: 640px; margin-inline: auto; width: 100%; }
  .cases-showcase { grid-template-columns: 1fr; }
  .case-big { height: 300px; }
}

@media (max-width: 768px) {
  .section { padding: 76px 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stat-item:nth-child(2)::after { display: none; }

  /* 移动端导航 */
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 0; right: -100%;
    width: min(320px, 82vw);
    height: 100vh;
    background: rgba(255,255,255,.98);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 100px 40px 40px;
    gap: 8px;
    transition: right .45s var(--ease);
    border-left: 1px solid var(--green-line);
    box-shadow: -20px 0 60px rgba(47,125,50,.18);
  }
  .main-nav.open { right: 0; }
  .nav-link { font-size: 17px; padding: 12px 0; width: 100%; }
  .nav-link::after { left: 0; right: auto; width: 34px; }
  .nav-cta { margin-left: 0; margin-top: 14px; text-align: center; }

  .hero-title { letter-spacing: .08em; }
  .hero-sub { letter-spacing: .12em; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: min(320px, 90%); }

  .about-info { grid-template-columns: 1fr; }
  .about-img-wrap img { height: 340px; }
  .about-badge { right: 8px; }

  .dash-side { width: 128px; }
  .dash-item { padding: 8px 12px; font-size: 11px; }
  .dash-cards { gap: 8px; }
  .dash-card { padding: 10px; }
  .dash-card b { font-size: 15px; }
  .product-features, .contact-grid { grid-template-columns: 1fr; }
  .contact-card { padding: 30px 24px; }
}

@media (max-width: 520px) {
  .services-grid, .scope-grid, .advantage-grid, .plan-grid { grid-template-columns: 1fr; }
  .stats-grid { gap: 18px; }
  .stat-num { font-size: 34px; }
  .stat-label { letter-spacing: .16em; font-size: 12px; }
  .back-top { right: 16px; bottom: 16px; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   移动端增强 · 导航遮罩 / 复制微信 / 提示条
   ============================================================ */
body.no-scroll { overflow: hidden; }

.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(20, 60, 24, .42);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .4s var(--ease), visibility .4s;
}
.nav-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* 微信复制按钮 */
.wx-copy {
  display: inline-block;
  margin: 8px 0 0;
  padding: 7px 18px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: #ffffff;
  background: linear-gradient(135deg, var(--green-light), var(--green));
  border: none;
  border-radius: 100px;
  cursor: pointer;
  align-self: flex-start;
  transition: all .3s;
}
.wx-copy:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(47,125,50,.3); }
.wx-copy:active { transform: scale(.96); }

/* 复制成功提示条 */
.toast {
  position: fixed;
  left: 50%; bottom: 46px;
  transform: translate(-50%, 20px);
  z-index: 1200;
  max-width: 86vw;
  padding: 12px 26px;
  background: var(--green-dark);
  color: #ffffff;
  font-size: 14px;
  letter-spacing: .04em;
  border-radius: 100px;
  box-shadow: 0 14px 36px rgba(27,94,32,.35);
  opacity: 0;
  visibility: hidden;
  transition: all .4s var(--ease);
  pointer-events: none;
  text-align: center;
}
.toast.show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

/* ============================================================
   手机端精细适配
   ============================================================ */
@media (max-width: 768px) {
  .hero-content { padding-top: 90px; }
  .dash { height: 400px; }
  .contact-list b { font-size: 16px; }
}

@media (max-width: 520px) {
  /* 顶部导航 */
  .site-header { padding: 15px 0; }
  .site-header.scrolled { padding: 9px 0; }
  .brand-logo { width: 38px; height: 38px; }
  .brand-text strong { font-size: 18px; letter-spacing: .12em; }
  .main-nav { padding: 88px 28px 40px; }

  /* 首屏 */
  .hero-eyebrow { font-size: 11px; letter-spacing: .3em; margin-bottom: 22px; }
  .hero-title { font-size: clamp(29px, 8.6vw, 40px); letter-spacing: .05em; margin-bottom: 20px; }
  .hero-sub { font-size: 15px; letter-spacing: .1em; line-height: 2; margin-bottom: 36px; }
  .hero-actions { gap: 14px; }
  .btn { padding: 14px 26px; font-size: 14.5px; width: min(300px, 92%); }

  /* 区块通用 */
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 42px; }
  .section-title { font-size: 27px; }
  .section-desc { font-size: 14px; }

  /* 数据统计 */
  .stats { padding: 44px 0; }
  .stat-label { font-size: 11.5px; letter-spacing: .12em; }

  /* 关于我们 */
  .about-img-wrap img { height: 280px; }
  .about-badge { right: 6px; bottom: 20px; padding: 12px 18px; }
  .about-badge strong { font-size: 26px; }
  .about-badge span { font-size: 10.5px; }
  .about-content .about-lead { font-size: 17px; }
  .about-info b { font-size: 13.5px; }

  /* 核心产品 · 仪表盘 */
  .dash-side { display: none; }          /* 手机上只展示主面板，更清晰 */
  .dash { height: 380px; }
  .dash-main { padding: 16px; }
  .dash-cards { gap: 8px; }
  .dash-card { padding: 10px 12px; }
  .dash-card b { font-size: 16px; }
  .product-text h3 { font-size: 26px; }
  .pf-col { padding: 22px 20px; }

  /* 服务 / 业务范围 / 优势 / 规划卡片 */
  .service-card { padding: 32px 24px 26px; }
  .scope-item { padding: 28px 22px; }
  .adv-item { padding: 30px 24px; }

  /* 合作客户 */
  .case-big { height: 240px; }
  .case-big-caption { left: 20px; right: 20px; bottom: 18px; }
  .case-big-caption h3 { font-size: 20px; }
  .clients-list { gap: 10px; }
  .clients-list li { font-size: 13.5px; padding: 10px 20px; }

  /* 发展规划 */
  .plan-item { padding: 34px 22px; }
  .plan-icon { width: 62px; height: 62px; }

  /* 联系我们 */
  .contact-card { padding: 26px 20px; }
  .contact-list li { gap: 14px; padding: 15px 0; }
  .c-icon { width: 40px; height: 40px; }
  .contact-list b { font-size: 15.5px; }
  .contact-list small { font-size: 11.5px; }

  /* 页脚 */
  .site-footer { padding: 44px 0 32px; }
  .footer-brand strong { font-size: 17px; }
  .footer-slogan { font-size: 14px; letter-spacing: .12em; }
  .footer-meta { font-size: 12.5px; }
}

@media (max-width: 380px) {
  .hero-title { font-size: 27px; }
  .stats-grid { gap: 12px; }
  .stat-num { font-size: 30px; }
  .dash-cards { gap: 6px; }
  .dash-card { padding: 8px 9px; }
  .dash-card b { font-size: 14px; }
  .dash-chart { padding: 14px 12px 8px; }
  .contact-card { padding: 24px 18px; }
}