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

:root {
  --blue: #0066cc;
  --blue-light: #1a8cff;
  --cyan: #00b4d8;
  --bg-dark: #0a1628;
  --bg-card: #132b47;
  --text-main: #e8f0fa;
  --text-sub: #a8c0d8;
  --text-muted: #6b8299;
  --border: rgba(0, 140, 220, 0.2);
}

body {
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration:none; color:inherit; }
ul { list-style:none; }
img { max-width:100%; display:block; }
.container { width: 92%; max-width: 1280px; margin: 0 auto; }

/* ================= 顶部信息条 ================= */
.topbar {
  background: #061020;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
  padding: 8px 0;
}
.topbar .container {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
}
.topbar-left { display: flex; gap: 24px; align-items: center; }
.topbar-left span { display: flex; align-items: center; gap: 6px; }
.topbar-left i { color: var(--cyan); font-size: 12px; }
.topbar-right { display: flex; gap: 18px; align-items: center; }
.topbar-right a { transition: color .2s; }
.topbar-right a:hover { color: var(--cyan); }
.lang-switch { display: flex; gap: 4px; align-items: center; }
.lang-switch a {
  padding: 2px 8px; border-radius: 3px; font-size: 12px;
  border: 1px solid transparent; transition: .2s;
}
.lang-switch a.active { border-color: var(--cyan); color: var(--cyan); }
.lang-switch a:hover { color: var(--cyan); }

/* ================= 主导航 ================= */
.header {
  background: rgba(10, 22, 40, 0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 1000;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}

/* Logo */
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 42px; height: 42px; border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: #fff; font-weight: 800;
  box-shadow: 0 0 16px rgba(0, 140, 220, 0.4);
}
.logo-text { line-height: 1.15; }
.logo-text .cn { font-size: 22px; font-weight: 700; letter-spacing: 2px; color: #fff; }
.logo-text .en { font-size: 11px; letter-spacing: 3px; color: var(--text-muted); font-weight: 400; }

/* 导航菜单 —— 使用真实 href 链接跳转 */
.main-nav { display: flex; align-items: center; height: 100%; }
.main-nav a {
  display: flex; align-items: center; height: 100%;
  padding: 0 22px; font-size: 15px; color: var(--text-sub);
  position: relative; transition: .2s; letter-spacing: .5px;
}
.main-nav a::after {
  content: ''; position: absolute; bottom: 0; left: 50%;
  width: 0; height: 3px; background: linear-gradient(90deg, var(--blue-light), var(--cyan));
  transition: .25s; transform: translateX(-50%);
}
.main-nav a:hover { color: #fff; }
.main-nav a:hover::after { width: 60%; }
.main-nav a.active { color: #fff; }
.main-nav a.active::after { width: 60%; }

.header-actions { display: flex; align-items: center; gap: 16px; }
.search-btn {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--border); background: transparent;
  color: var(--text-sub); cursor: pointer; font-size: 15px;
  display: flex; align-items: center; justify-content: center; transition: .2s;
}
.search-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.menu-toggle {
  display: none; background: none; border: none; color: #fff;
  font-size: 22px; cursor: pointer;
}

@media (max-width: 1024px) {
  .main-nav {
    position: fixed; top: 76px; left: 0; right: 0;
    background: #0a1628; flex-direction: column; height: auto;
    border-bottom: 1px solid var(--border);
    max-height: 0; overflow: hidden; transition: max-height .35s ease;
  }
  .main-nav.open { max-height: 520px; }
  .main-nav a {
    width: 100%; padding: 15px 24px; height: auto;
    border-bottom: 1px solid rgba(0,140,220,.1); font-size: 15px;
  }
  .main-nav a::after { display: none; }
  .main-nav a.active { background: rgba(0,140,220,.12); color: var(--cyan); }
  .menu-toggle { display: block; }
  .topbar-left span:nth-child(2) { display: none; }
}

/* ================= 通用标题 ================= */
.section { padding: 70px 0; }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head .sub {
  font-size: 13px; letter-spacing: 4px; color: var(--cyan);
  text-transform: uppercase; margin-bottom: 10px;
}
.section-head h2 {
  font-size: 34px; font-weight: 700; color: #fff;
  letter-spacing: 1px; position: relative; display: inline-block;
  padding-bottom: 16px;
}
.section-head h2::after {
  content: ''; position: absolute; bottom: 0; left: 50%;
  transform: translateX(-50%); width: 50px; height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan)); border-radius: 2px;
}
.section-head p {
  color: var(--text-sub); margin-top: 16px; font-size: 15px; max-width: 700px;
  margin-left: auto; margin-right: auto;
}

/* ================= 按钮 ================= */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 32px; border-radius: 4px; font-size: 15px;
  font-weight: 500; cursor: pointer; transition: .25s;
  border: 1px solid transparent; letter-spacing: .5px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  color: #fff; box-shadow: 0 6px 20px -6px rgba(0,120,220,.7);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px -6px rgba(0,140,255,.9); }
.btn-ghost { border-color: rgba(255,255,255,.3); color: #fff; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0,180,216,.06); }

/* ================= 面包屑 ================= */
.breadcrumb {
  background: linear-gradient(90deg, #081828, #0d2338);
  border-bottom: 1px solid var(--border); padding: 26px 0;
}
.breadcrumb-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.breadcrumb h1 { font-size: 26px; color: #fff; font-weight: 700; letter-spacing: 1px; }
.breadcrumb .path { font-size: 13px; color: var(--text-muted); }
.breadcrumb .path a:hover { color: var(--cyan); }
.breadcrumb .path i { margin: 0 8px; font-size: 10px; }

/* ================= 产品卡片 ================= */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 6px; overflow: hidden; transition: .3s;
}
.product-card:hover {
  transform: translateY(-6px); border-color: rgba(0,180,216,.55);
  box-shadow: 0 20px 40px -18px rgba(0,120,220,.6);
}
.product-thumb {
  height: 190px; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(145deg, #0d2742, #0a1c30);
}
.product-thumb i { font-size: 68px; color: rgba(0,180,216,.35); transition: .4s; }
.product-card:hover .product-thumb i { transform: scale(1.12); color: rgba(0,180,216,.6); }
.product-thumb .tag {
  position: absolute; top: 14px; left: 14px;
  background: rgba(0,120,220,.85); color: #fff; font-size: 12px;
  padding: 3px 12px; border-radius: 3px; letter-spacing: 1px;
}
.product-body { padding: 22px 22px 26px; }
.product-body h3 { font-size: 19px; color: #fff; margin-bottom: 10px; font-weight: 600; }
.product-body p { font-size: 14px; color: var(--text-sub); line-height: 1.75; margin-bottom: 16px; min-height: 48px; }
.product-specs { display: flex; gap: 18px; padding-top: 14px; border-top: 1px dashed rgba(0,140,220,.2); }
.product-specs div { font-size: 13px; color: var(--text-muted); }
.product-specs div strong { display: block; color: var(--cyan); font-size: 16px; font-weight: 600; }

@media (max-width: 900px) { .product-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .product-grid { grid-template-columns: 1fr; } }

/* ================= 解决方案卡片 ================= */
.solution-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.solution-card {
  background: linear-gradient(160deg, #10253d, #0b1a2e);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 34px 26px; transition: .3s; position: relative; overflow: hidden;
}
.solution-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  transform: scaleX(0); transform-origin: left; transition: .35s;
}
.solution-card:hover::before { transform: scaleX(1); }
.solution-card:hover { transform: translateY(-5px); border-color: rgba(0,180,216,.4); }
.solution-card .ico {
  width: 54px; height: 54px; border-radius: 10px;
  background: rgba(0,140,220,.12); border: 1px solid rgba(0,180,216,.3);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--cyan); margin-bottom: 20px;
}
.solution-card h3 { font-size: 17px; color: #fff; margin-bottom: 12px; font-weight: 600; }
.solution-card p { font-size: 13.5px; color: var(--text-sub); line-height: 1.75; }

@media (max-width: 1024px) { .solution-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .solution-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .solution-grid { grid-template-columns: 1fr; } }

/* ================= 服务卡片 ================= */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  background: linear-gradient(160deg, #10253d, #0b1a2e);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 30px 26px; transition: .3s;
}
.service-card:hover { transform: translateY(-5px); border-color: rgba(0,180,216,.45); }
.service-card .ico {
  width: 50px; height: 50px; border-radius: 10px;
  background: rgba(0,140,220,.12); display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: var(--cyan); margin-bottom: 20px;
}
.service-card h3 { color: #fff; font-size: 17px; margin-bottom: 12px; font-weight: 600; }
.service-card p { color: var(--text-sub); font-size: 13.5px; line-height: 1.8; }
.service-card ul { margin-top: 14px; }
.service-card ul li {
  color: var(--text-muted); font-size: 13px; padding: 5px 0;
  display: flex; align-items: center; gap: 8px;
}
.service-card ul li::before { content: '›'; color: var(--cyan); font-weight: 700; font-size: 15px; }

@media (max-width: 900px) { .service-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .service-grid { grid-template-columns: 1fr; } }

/* ================= 数据条 ================= */
.stats-bar {
  background: linear-gradient(90deg, #0c1f38, #0f2a4a, #0c1f38);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 36px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat-item .num {
  font-size: 38px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, #fff, var(--cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1.1;
}
.stat-item .num small { font-size: 18px; }
.stat-item .label { color: var(--text-sub); font-size: 14px; margin-top: 6px; letter-spacing: 1px; }
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .stat-item .num { font-size: 30px; }
}

/* ================= 新闻 ================= */
.news-layout { display: grid; grid-template-columns: 1.6fr 1fr; gap: 40px; }
.news-list { display: flex; flex-direction: column; }
.news-row {
  display: flex; gap: 24px; padding: 22px 0;
  border-bottom: 1px solid rgba(0,140,220,.12); transition: .2s;
}
.news-row:hover { padding-left: 8px; background: rgba(0,140,220,.03); }
.news-row .date-box {
  flex-shrink: 0; width: 76px; height: 76px; border-radius: 6px;
  background: linear-gradient(160deg, #103456, #0b1f36);
  border: 1px solid rgba(0,180,216,.25);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.news-row .date-box .d { font-size: 26px; font-weight: 800; color: var(--cyan); line-height: 1; }
.news-row .date-box .m { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.news-row .news-txt h3 {
  font-size: 16px; color: #fff; font-weight: 500; margin-bottom: 8px;
  transition: .2s; line-height: 1.5;
}
.news-row:hover .news-txt h3 { color: var(--cyan); }
.news-row .news-txt p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

.side-panel {
  background: linear-gradient(160deg, #10253d, #0b1a2e);
  border: 1px solid var(--border); border-radius: 6px; padding: 28px;
}
.side-panel h4 {
  font-size: 17px; color: #fff; margin-bottom: 18px; padding-bottom: 14px;
  border-bottom: 1px solid rgba(0,140,220,.18); position: relative;
}
.side-panel h4::after {
  content: ''; position: absolute; bottom: -1px; left: 0; width: 42px; height: 2px; background: var(--cyan);
}
.side-panel ul li {
  padding: 11px 0; border-bottom: 1px dashed rgba(0,140,220,.13);
  font-size: 14px; color: var(--text-sub); display: flex; justify-content: space-between;
}
.side-panel ul li:last-child { border-bottom: none; }
.side-panel ul li span { color: var(--text-muted); font-size: 12px; }

@media (max-width: 900px) { .news-layout { grid-template-columns: 1fr; } }

/* ================= 智造 ================= */
.smart-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px; align-items: center; }
.smart-visual {
  background: linear-gradient(160deg, #0e2742, #0a1a2c);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 30px; display: flex; flex-wrap: wrap; gap: 14px; justify-content: center;
}
.tech-chip {
  display: flex; align-items: center; gap: 9px;
  background: rgba(0,140,220,.08); border: 1px solid rgba(0,180,216,.25);
  padding: 11px 20px; border-radius: 40px; font-size: 13.5px; color: var(--text-sub);
  transition: .25s;
}
.tech-chip i { color: var(--cyan); }
.tech-chip:hover { border-color: var(--cyan); color: #fff; background: rgba(0,180,216,.13); }

.smart-steps { display: flex; flex-direction: column; gap: 22px; }
.smart-step {
  display: flex; gap: 20px; align-items: flex-start;
  padding: 20px 22px; background: rgba(0,140,220,.04);
  border: 1px solid var(--border); border-radius: 6px; border-left: 3px solid var(--cyan);
}
.smart-step .no {
  font-size: 26px; font-weight: 800; color: rgba(0,180,216,.5); line-height: 1; flex-shrink: 0;
}
.smart-step h4 { color: #fff; font-size: 16px; margin-bottom: 7px; font-weight: 600; }
.smart-step p { color: var(--text-sub); font-size: 13.5px; line-height: 1.7; }

@media (max-width: 900px) { .smart-layout { grid-template-columns: 1fr; gap: 36px; } }

/* ================= 关于 ================= */
.about-flex { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-text .sub { color: var(--cyan); font-size: 13px; letter-spacing: 3px; margin-bottom: 10px; }
.about-text h3 { font-size: 30px; color: #fff; margin-bottom: 22px; line-height: 1.35; font-weight: 700; }
.about-text p { color: var(--text-sub); font-size: 15px; margin-bottom: 18px; line-height: 1.9; }
.about-milestones { display: flex; flex-direction: column; gap: 16px; margin-top: 26px; }
.milestone { display: flex; gap: 16px; align-items: flex-start; }
.milestone .yr { flex-shrink: 0; color: var(--cyan); font-weight: 700; font-size: 15px; min-width: 58px; padding-top: 2px; }
.milestone .txt { color: var(--text-sub); font-size: 14px; border-left: 1px solid rgba(0,180,216,.3); padding-left: 16px; }

.about-visual {
  background: linear-gradient(160deg, #10253d, #0a1a2c);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 34px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.about-visual .v-item {
  background: rgba(0,140,220,.06); border: 1px solid rgba(0,180,216,.15);
  border-radius: 6px; padding: 22px 18px; text-align: center;
}
.about-visual .v-item .v-num { font-size: 30px; font-weight: 800; color: var(--cyan); line-height: 1.1; }
.about-visual .v-item .v-label { font-size: 13px; color: var(--text-sub); margin-top: 8px; }

@media (max-width: 900px) {
  .about-flex { grid-template-columns: 1fr; gap: 36px; }
  .about-text h3 { font-size: 24px; }
}

/* ================= 联系 ================= */
.contact-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 50px; }
.contact-info h3 { color: #fff; font-size: 22px; margin-bottom: 24px; font-weight: 600; }
.contact-line { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 22px; }
.contact-line .ico {
  width: 44px; height: 44px; border-radius: 8px; flex-shrink: 0;
  background: rgba(0,140,220,.1); border: 1px solid rgba(0,180,216,.25);
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan); font-size: 17px;
}
.contact-line .txt .lbl { font-size: 13px; color: var(--text-muted); margin-bottom: 4px; }
.contact-line .txt .val { font-size: 15px; color: var(--text-main); }

.contact-form-box {
  background: linear-gradient(160deg, #10253d, #0b1a2e);
  border: 1px solid var(--border); border-radius: 8px; padding: 34px;
}
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 13px; color: var(--text-sub); margin-bottom: 8px; }
.form-field input, .form-field textarea, .form-field select {
  width: 100%; padding: 12px 15px; background: #0a1929;
  border: 1px solid rgba(0,140,220,.25); border-radius: 4px;
  color: #fff; font-size: 14px; font-family: inherit; outline: none; transition: .2s;
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
  border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,180,216,.1);
}
.form-field textarea { resize: vertical; min-height: 110px; }
.form-field select option { background: #0a1929; }

@media (max-width: 900px) {
  .contact-layout { grid-template-columns: 1fr; gap: 36px; }
  .form-row-2 { grid-template-columns: 1fr; }
}

/* ================= 合作伙伴 ================= */
.partners { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; }
.partner-item {
  padding: 18px 32px; border: 1px solid var(--border); border-radius: 6px;
  color: var(--text-muted); font-size: 14px; letter-spacing: 1px;
  background: rgba(0,140,220,.03); transition: .25s;
}
.partner-item:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0,180,216,.06); }

/* ================= 页脚 ================= */
.footer { background: #061020; border-top: 1px solid var(--border); padding: 54px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-col h4 {
  color: #fff; font-size: 15px; margin-bottom: 20px; font-weight: 600;
  letter-spacing: 1px; position: relative; padding-bottom: 12px;
}
.footer-col h4::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 2px; background: var(--cyan);
}
.footer-col ul li { margin-bottom: 11px; }
.footer-col ul li a { color: var(--text-muted); font-size: 13.5px; transition: .2s; }
.footer-col ul li a:hover { color: var(--cyan); padding-left: 4px; }
.footer-about p { color: var(--text-muted); font-size: 13.5px; line-height: 1.9; margin-bottom: 18px; }
.footer-contact-item { display: flex; gap: 10px; color: var(--text-muted); font-size: 13.5px; margin-bottom: 12px; }
.footer-contact-item i { color: var(--cyan); margin-top: 4px; }

.footer-bottom {
  border-top: 1px solid rgba(0,140,220,.12); padding: 22px 0;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
  color: var(--text-muted); font-size: 13px;
}
.footer-bottom .links a { margin-left: 20px; transition: .2s; }
.footer-bottom .links a:hover { color: var(--cyan); }

@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-bottom .links a { margin: 0 10px; }
}

/* ================= 首页 Banner ================= */
.banner { position: relative; height: 560px; overflow: hidden; background: #061020; }
.slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease; display: flex; align-items: center; }
.slide.active { opacity: 1; }
.slide-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.slide-1 .slide-bg {
  background: linear-gradient(120deg, rgba(6,16,32,.92) 0%, rgba(6,16,32,.55) 45%, rgba(0,80,160,.35) 100%),
              radial-gradient(ellipse at 75% 50%, #0d3b66 0%, #061020 70%);
}
.slide-2 .slide-bg {
  background: linear-gradient(120deg, rgba(6,16,32,.92) 0%, rgba(6,16,32,.55) 45%, rgba(0,100,150,.35) 100%),
              radial-gradient(ellipse at 75% 50%, #0a4a6e 0%, #061020 70%);
}
.slide-3 .slide-bg {
  background: linear-gradient(120deg, rgba(6,16,32,.92) 0%, rgba(6,16,32,.55) 45%, rgba(0,60,130,.35) 100%),
              radial-gradient(ellipse at 75% 50%, #103f5e 0%, #061020 70%);
}
.slide-inner { position: relative; z-index: 2; width: 92%; max-width: 1280px; margin: 0 auto; padding-top: 20px; }
.slide-inner .badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,180,216,.12); border: 1px solid rgba(0,180,216,.4);
  color: var(--cyan); font-size: 13px; padding: 6px 16px;
  border-radius: 30px; margin-bottom: 22px; letter-spacing: 1px;
}
.slide-inner h1 { font-size: 48px; font-weight: 800; line-height: 1.25; color: #fff; letter-spacing: 1px; max-width: 720px; margin-bottom: 20px; }
.slide-inner h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--cyan), #7fd8ff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.slide-inner p { font-size: 17px; color: var(--text-sub); max-width: 560px; margin-bottom: 34px; }
.slide-btns { display: flex; gap: 16px; flex-wrap: wrap; }

.banner-dots {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 12px; z-index: 5;
}
.banner-dots span {
  width: 34px; height: 4px; border-radius: 2px;
  background: rgba(255,255,255,.25); cursor: pointer; transition: .3s;
}
.banner-dots span.active { background: var(--cyan); width: 50px; }

@media (max-width: 768px) {
  .banner { height: 480px; }
  .slide-inner h1 { font-size: 30px; }
  .slide-inner p { font-size: 15px; }
  .section { padding: 50px 0; }
  .section-head h2 { font-size: 26px; }
}

/* ================= 滚动动画 ================= */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.show { opacity: 1; transform: translateY(0); }