/* ============================================
   微笑口腔医院 - 微笑横幅风
   蓝 #1e88e5 / 白 #ffffff / 浅蓝 #e3f2fd
   ============================================ */
:root {
  --blue: #1e88e5;
  --blue-dark: #1565c0;
  --blue-deep: #0d47a1;
  --liteblue: #e3f2fd;
  --liteblue-deep: #bbdefb;
  --white: #ffffff;
  --text: #263238;
  --text-soft: #607d8b;
  --radius: 20px;
  --shadow: 0 12px 32px rgba(21, 101, 192, 0.16);
  --font: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { width: 90%; max-width: 1200px; margin: 0 auto; }

/* ---------- 固定导航（圆润蓝底白字） ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 12px rgba(21, 101, 192, 0.08);
  transition: box-shadow 0.3s;
}
.site-header.scrolled { box-shadow: 0 6px 20px rgba(21, 101, 192, 0.18); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 74px; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  font-size: 22px;
  box-shadow: 0 4px 12px rgba(30, 136, 229, 0.4);
}
.logo-text { font-size: 20px; font-weight: 700; color: var(--blue-dark); line-height: 1.2; }
.logo-text small { display: block; font-size: 10px; font-weight: 400; letter-spacing: 2px; color: var(--blue); }

.main-nav { display: flex; gap: 8px; }
.main-nav a {
  padding: 10px 22px;
  border-radius: 999px;
  color: var(--blue-dark);
  font-size: 15px;
  font-weight: 500;
  transition: background 0.3s, color 0.3s;
}
.main-nav a:hover, .main-nav a.active {
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff;
  box-shadow: 0 4px 14px rgba(30, 136, 229, 0.4);
}

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block; width: 26px; height: 3px;
  background: var(--blue-dark); margin: 5px 0;
  border-radius: 999px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ---------- Hero 微笑横幅 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  overflow: hidden;
  padding: 150px 0 120px;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 85% 20%, rgba(255, 255, 255, 0.18), transparent 60%),
    radial-gradient(500px 300px at 10% 80%, rgba(187, 222, 251, 0.15), transparent 60%);
}
.hero-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.hero-text { max-width: 560px; color: #fff; }
.hero-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  padding: 8px 22px;
  font-size: 14px; letter-spacing: 2px;
  margin-bottom: 22px;
}
.hero-text h1 {
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.25;
  margin-bottom: 20px;
  font-weight: 800;
}
.hero-text p { font-size: 17px; color: rgba(255, 255, 255, 0.88); margin-bottom: 34px; max-width: 480px; }

.btn {
  display: inline-block;
  padding: 14px 34px;
  border-radius: 999px;
  font-size: 16px; font-weight: 600;
  cursor: pointer; border: none;
  transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
}
.btn:hover { transform: translateY(-3px); }
.btn-white {
  background: #fff; color: var(--blue-dark);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}
.btn-white:hover { box-shadow: 0 14px 34px rgba(0, 0, 0, 0.28); }
.btn-ghost {
  background: transparent; color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); }
.btn-blue {
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff;
  box-shadow: 0 10px 24px rgba(30, 136, 229, 0.35);
}
.btn-blue:hover { box-shadow: 0 14px 32px rgba(30, 136, 229, 0.5); }
.btn-sm { padding: 10px 24px; font-size: 14px; }

/* 微笑弧形 + 一排牙齿 */
.hero-smile { position: relative; width: 420px; text-align: center; }
.smile-arc {
  position: relative;
  height: 220px;
  background: rgba(255, 255, 255, 0.12);
  border: 3px solid rgba(255, 255, 255, 0.55);
  border-bottom: none;
  border-radius: 999px 999px 0 0;
  overflow: hidden;
  backdrop-filter: blur(6px);
  display: flex; align-items: flex-end; justify-content: center;
  padding: 0 30px 0;
  box-shadow: 0 0 60px rgba(255, 255, 255, 0.2);
}
.smile-arc::before {
  content: "";
  position: absolute; top: 26px; left: 50%;
  transform: translateX(-50%);
  width: 60%; height: 2px;
  background: rgba(255, 255, 255, 0.3);
}
.teeth {
  display: flex; align-items: flex-end; justify-content: center;
  gap: 6px;
  width: 100%;
  margin-bottom: 18px;
  z-index: 2;
}
.tooth {
  width: 34px;
  height: 74px;
  background: #fff;
  border-radius: 12px 12px 6px 6px;
  box-shadow: 0 4px 10px rgba(13, 71, 161, 0.25);
  transition: height 0.3s, transform 0.3s;
  animation: toothBob 3.5s ease-in-out infinite;
}
.tooth:nth-child(1) { height: 52px; margin-top: 40px; }
.tooth:nth-child(2) { height: 62px; margin-top: 28px; animation-delay: 0.3s; }
.tooth:nth-child(3) { height: 70px; margin-top: 18px; animation-delay: 0.5s; }
.tooth:nth-child(4) { height: 76px; margin-top: 8px; animation-delay: 0.7s; }
.tooth:nth-child(5) { height: 78px; margin-top: 4px; animation-delay: 0.9s; }
.tooth:nth-child(6) { height: 76px; margin-top: 8px; animation-delay: 1.1s; }
.tooth:nth-child(7) { height: 70px; margin-top: 18px; animation-delay: 1.3s; }
.tooth:nth-child(8) { height: 62px; margin-top: 28px; animation-delay: 1.5s; }
.tooth:nth-child(9) { height: 52px; margin-top: 40px; animation-delay: 1.7s; }
@keyframes toothBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
.smile-cheek { position: absolute; top: 60px; font-size: 46px; }
.cheek-left { left: -26px; transform: rotate(-16deg); }
.cheek-right { right: -26px; transform: rotate(16deg); }
.smile-caption {
  margin-top: 18px;
  font-size: 15px; letter-spacing: 4px;
  color: rgba(255, 255, 255, 0.9);
}

/* 分区 */
.section { padding: 92px 0; position: relative; }
.section-white { background: var(--white); }
.section-liteblue { background: linear-gradient(180deg, var(--liteblue), var(--white)); }
.section-blue {
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff;
}

.sec-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
.sec-head h2 {
  font-size: clamp(28px, 4vw, 40px);
  color: var(--blue-dark);
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
  display: inline-block;
}
.sec-head h2::after {
  content: "";
  position: absolute; left: 50%; bottom: -12px;
  transform: translateX(-50%);
  width: 80px; height: 5px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
}
.sec-head p { color: var(--text-soft); font-size: 16px; }

/* 微笑弧线过渡（分区之间） */
.smile-divider { height: 60px; }
.smile-top {
  background: var(--liteblue);
  border-radius: 0 0 50% 50% / 0 0 80px 80px;
  margin-top: -92px;
  transform: translateY(-92px);
  position: relative;
  z-index: 1;
}

/* 微笑承诺 */
.promise-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 22px; }
.promise-card {
  text-align: center;
  background: #fff;
  border-radius: 999px 999px 24px 24px;
  border: 2px solid var(--liteblue-deep);
  padding: 30px 20px;
  transition: transform 0.4s, box-shadow 0.4s, border-color 0.4s;
}
.promise-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow);
  border-color: var(--blue);
}
.tooth-icon {
  display: block;
  width: 56px; height: 60px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, #fff, var(--liteblue));
  border: 3px solid var(--blue);
  border-radius: 50% 50% 40% 40% / 62% 62% 32% 32%;
  position: relative;
}
.tooth-icon::before,
.tooth-icon::after {
  content: "";
  position: absolute; bottom: -8px;
  width: 10px; height: 14px;
  background: var(--blue);
  border-radius: 0 0 6px 6px;
}
.tooth-icon::before { left: 14px; }
.tooth-icon::after { right: 14px; }
.promise-card h3 { font-size: 17px; color: var(--blue-dark); margin-bottom: 8px; }
.promise-card p { font-size: 13.5px; color: var(--text-soft); }

/* 诊疗项目卡片 */
.prod-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.prod-card {
  display: grid; grid-template-columns: 0.9fr 1.1fr;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(21, 101, 192, 0.1);
  border: 1px solid var(--liteblue);
  transition: transform 0.4s, box-shadow 0.4s;
}
.prod-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.prod-img { overflow: hidden; min-height: 210px; position: relative; }
.prod-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.prod-card:hover .prod-img img { transform: scale(1.07); }
.prod-body { position: relative; padding: 26px 28px; display: flex; flex-direction: column; justify-content: center; }
.prod-icon {
  position: absolute; top: -24px; left: 28px;
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  border-radius: 50%;
  box-shadow: 0 6px 14px rgba(30, 136, 229, 0.4);
}
.prod-body h3 { font-size: 20px; color: var(--blue-dark); margin: 8px 0 10px; }
.prod-body p { font-size: 14px; color: var(--text-soft); }

.sec-foot { text-align: center; margin-top: 44px; }

/* 专家 */
.expert-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; max-width: 860px; margin: 0 auto; }
.expert-card {
  text-align: center;
  background: #fff;
  border-radius: 24px;
  border: 2px solid var(--liteblue-deep);
  padding: 30px;
  transition: transform 0.4s, box-shadow 0.4s;
}
.expert-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.expert-img {
  width: 160px; height: 180px;
  margin: 0 auto 18px;
  border-radius: 50% 50% 26px 26px;
  overflow: hidden;
  border: 4px solid var(--liteblue-deep);
  box-shadow: inset 0 0 0 2px #fff;
}
.expert-img img { width: 100%; height: 100%; object-fit: cover; }
.expert-card h3 { font-size: 22px; color: var(--blue-dark); margin-bottom: 6px; }
.expert-card > span {
  display: inline-block;
  font-size: 13px; color: var(--blue);
  background: var(--liteblue);
  border-radius: 999px;
  padding: 4px 16px;
  margin-bottom: 10px;
}
.expert-card p { font-size: 14px; color: var(--text-soft); }

/* 案例 */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(21, 101, 192, 0.1);
  border: 1px solid var(--liteblue);
  transition: transform 0.4s, box-shadow 0.4s;
  position: relative;
}
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.case-img { height: 200px; overflow: hidden; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.case-card:hover .case-img img { transform: scale(1.08); }
.case-tag {
  position: absolute; top: 14px; left: 14px;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff; font-size: 13px;
  border-radius: 999px;
  padding: 4px 16px;
  box-shadow: 0 4px 10px rgba(13, 71, 161, 0.35);
}
.case-body { padding: 20px 22px 24px; }
.case-body h3 { font-size: 16.5px; color: var(--blue-dark); margin-bottom: 8px; }
.case-body p { font-size: 13.5px; color: var(--text-soft); margin-bottom: 14px; }
.case-meter {
  height: 8px;
  border-radius: 999px;
  background: var(--liteblue);
  overflow: hidden;
  margin-bottom: 6px;
}
.case-meter span {
  display: block; height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--liteblue-deep), var(--blue));
}
.case-body small { font-size: 12px; color: var(--text-soft); }

/* 联系 CTA */
.cta-wrap { position: relative; z-index: 2; }
.cta-row {
  display: flex; align-items: center; justify-content: space-between; gap: 26px;
  background: rgba(255, 255, 255, 0.14);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 28px;
  padding: 36px 42px;
  margin-bottom: 34px;
  backdrop-filter: blur(8px);
}
.cta-txt h2 { font-size: 28px; margin-bottom: 8px; }
.cta-txt p { font-size: 15px; color: rgba(255, 255, 255, 0.85); }
.cta-row .btn { flex-shrink: 0; }
.cta-contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cta-card {
  text-align: center;
  background: rgba(255, 255, 255, 0.14);
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px 999px 24px 24px;
  padding: 30px 20px;
  backdrop-filter: blur(8px);
  transition: transform 0.4s, background 0.4s;
}
.cta-card:hover { transform: translateY(-8px); background: rgba(255, 255, 255, 0.22); }
.cta-card .prod-icon {
  position: static; margin: 0 auto 12px;
  display: flex;
}
.cta-card h3 { font-size: 17px; margin-bottom: 6px; }
.cta-card p { font-size: 14px; color: rgba(255, 255, 255, 0.85); }

/* ---------- 内页横幅 ---------- */
.page-hero {
  position: relative;
  padding: 150px 0 70px;
  text-align: center;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(500px 260px at 20% 100%, rgba(255, 255, 255, 0.16), transparent 60%),
    radial-gradient(500px 260px at 85% 0%, rgba(187, 222, 251, 0.2), transparent 60%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(32px, 5vw, 46px); font-weight: 800; color: #fff; margin-bottom: 10px; }
.page-hero p { color: rgba(227, 242, 253, 0.85); letter-spacing: 3px; font-size: 15px; }

/* 关于分栏 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.split-img { position: relative; }
.split-img img {
  width: 100%; height: 440px; object-fit: cover;
  border-radius: 28px;
  border: 4px solid var(--liteblue-deep);
  box-shadow: var(--shadow);
}
.about-badge {
  position: absolute; right: -14px; bottom: 24px;
  width: 110px; height: 110px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff;
  font-size: 13px; line-height: 1.3;
  box-shadow: 0 10px 26px rgba(21, 101, 192, 0.45);
  text-align: center;
}
.about-badge strong { font-size: 30px; }
.tag-pill {
  display: inline-block;
  background: var(--liteblue);
  color: var(--blue-dark);
  font-size: 13px; letter-spacing: 1px;
  border-radius: 999px;
  padding: 6px 18px;
  margin-bottom: 16px;
}
.split-text h2 {
  font-size: clamp(26px, 4vw, 36px);
  color: var(--blue-dark);
  line-height: 1.4;
  font-weight: 800;
  margin-bottom: 20px;
}
.split-text p { color: var(--text-soft); margin-bottom: 16px; font-size: 15.5px; }
.feature-list { margin-top: 20px; }
.feature-list li {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--liteblue-deep);
  font-size: 15px;
}
.feature-list li span {
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff; font-size: 13px;
}

/* 时间线 */
.timeline { position: relative; max-width: 740px; margin: 0 auto; padding-left: 44px; }
.timeline::before {
  content: "";
  position: absolute; left: 16px; top: 8px; bottom: 8px;
  width: 3px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--blue), var(--liteblue-deep));
}
.tl-item { position: relative; margin-bottom: 30px; }
.tl-dot {
  position: absolute; left: -39px; top: 20px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--blue);
  box-shadow: 0 0 0 4px var(--liteblue-deep);
}
.tl-year { font-size: 15px; font-weight: 700; color: var(--blue); letter-spacing: 2px; margin-bottom: 8px; }
.tl-card {
  background: #fff;
  border: 1px solid var(--liteblue-deep);
  border-radius: 18px;
  padding: 20px 24px;
  box-shadow: 0 4px 14px rgba(21, 101, 192, 0.08);
}
.tl-card h3 { font-size: 17px; color: var(--blue-dark); margin-bottom: 6px; }
.tl-card p { font-size: 14px; color: var(--text-soft); }

/* 数据 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.stat-card {
  text-align: center;
  background: var(--liteblue);
  border: 2px solid #fff;
  border-radius: 24px;
  padding: 30px 16px;
  box-shadow: 0 6px 18px rgba(21, 101, 192, 0.1);
  transition: transform 0.4s, box-shadow 0.4s;
}
.stat-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.stat-card h3 { font-size: 34px; font-weight: 800; color: var(--blue-dark); }
.stat-card p { font-size: 14px; color: var(--text-soft); margin-top: 6px; }

/* 诊疗中心 */
.center-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.center-card {
  background: #fff;
  border: 1px solid var(--liteblue);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(21, 101, 192, 0.08);
  display: grid; grid-template-columns: 0.85fr 1.15fr;
  transition: transform 0.4s, box-shadow 0.4s;
}
.center-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.center-img { overflow: hidden; min-height: 220px; }
.center-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.center-card:hover .center-img img { transform: scale(1.07); }
.center-body { position: relative; padding: 26px 28px; }
.center-icon {
  position: absolute; top: -22px; left: 26px;
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  border-radius: 50%;
  color: #fff;
  box-shadow: 0 6px 14px rgba(30, 136, 229, 0.4);
}
.center-body h3 { font-size: 19px; color: var(--blue-dark); margin: 4px 0 10px; }
.center-body h3 a { color: inherit; text-decoration: none; }
.center-body h3 a:hover { color: var(--blue); }
.center-body p { font-size: 14px; color: var(--text-soft); margin-bottom: 10px; }
.center-body li { font-size: 13.5px; color: var(--text-soft); padding: 3px 0; }

/* 技术设备 */
.tech-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.tech-card {
  text-align: center;
  background: #fff;
  border: 2px solid var(--liteblue-deep);
  border-radius: 24px;
  padding: 30px 20px;
  transition: transform 0.4s, box-shadow 0.4s;
}
.tech-card:hover { transform: translateY(-8px) rotate(-1deg); box-shadow: var(--shadow); }
.tech-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  font-size: 26px;
  margin-bottom: 14px;
  box-shadow: 0 8px 18px rgba(30, 136, 229, 0.35);
}
.tech-card h3 { font-size: 16px; color: var(--blue-dark); margin-bottom: 8px; }
.tech-card p { font-size: 13.5px; color: var(--text-soft); }

/* 新闻 */
.featured-news {
  display: grid; grid-template-columns: 1.2fr 1fr;
  gap: 0;
  background: #fff;
  border: 1px solid var(--liteblue);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 30px;
}
.news-img img { width: 100%; height: 100%; min-height: 320px; object-fit: cover; }
.news-main { padding: 30px 34px; display: flex; flex-direction: column; justify-content: center; }
.news-main h3 { font-size: 23px; line-height: 1.5; margin: 14px 0; color: var(--blue-dark); }
.news-main h3 a:hover { color: var(--blue); }
.news-main p { color: var(--text-soft); font-size: 15px; margin-bottom: 16px; }
.news-tag {
  align-self: flex-start;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff; font-size: 12px;
  padding: 5px 16px;
  border-radius: 999px;
}
.news-date { color: var(--text-soft); font-size: 13px; }

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: #fff;
  border: 1px solid var(--liteblue);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(21, 101, 192, 0.08);
  transition: transform 0.4s, box-shadow 0.4s;
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.news-thumb { position: relative; height: 180px; overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.news-card:hover .news-thumb img { transform: scale(1.08); }
.news-thumb .news-tag { position: absolute; top: 12px; left: 12px; }
.news-card-body { padding: 20px 22px 24px; }
.news-card-body h3 { font-size: 16.5px; line-height: 1.6; margin-bottom: 10px; color: var(--blue-dark); }
.news-card-body h3 a:hover { color: var(--blue); }
.news-card-body p { font-size: 13.5px; color: var(--text-soft); margin-bottom: 12px; }

.pagination { display: flex; justify-content: center; gap: 10px; margin-top: 44px; }
.pagination a {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--liteblue-deep);
  color: var(--blue-dark);
  font-weight: 600;
  transition: background 0.3s, color 0.3s;
}
.pagination a:hover, .pagination a.active {
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff;
  border-color: transparent;
}
.pagination .page-next { width: auto; padding: 0 22px; border-radius: 999px; }

/* 联系页 */
.contact-info { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 40px; }
.contact-info .cta-card { background: #fff; border: 2px solid var(--liteblue-deep); }
.contact-info .cta-card p { color: var(--blue-dark); font-weight: 700; font-size: 16px; }
.contact-main { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: stretch; }
.contact-map {
  background: #fff;
  border: 1px solid var(--liteblue);
  border-radius: 24px;
  overflow: hidden;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow);
}
.contact-map img { width: 100%; height: 260px; object-fit: cover; }
.map-note { padding: 22px 26px; }
.map-note h4 { font-size: 17px; color: var(--blue-dark); margin-bottom: 10px; }
.map-note p { font-size: 14px; color: var(--text-soft); padding: 4px 0; }

.contact-form-box {
  background: #fff;
  border: 1px solid var(--liteblue);
  border-radius: 24px;
  padding: 34px 36px;
  box-shadow: var(--shadow);
}
.contact-form-box h2 { font-size: 24px; color: var(--blue-dark); margin: 14px 0 8px; }
.contact-form-box > p { font-size: 14px; color: var(--text-soft); margin-bottom: 22px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; margin-bottom: 7px; color: var(--blue-dark); }
.form-group label span { color: #e53935; }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1.5px solid var(--liteblue-deep);
  background: #fff;
  color: var(--text);
  font-size: 14.5px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(30, 136, 229, 0.12);
}
.form-group textarea { resize: vertical; }
.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select { border-color: #e53935; }
.form-error { display: block; color: #e53935; font-size: 12.5px; margin-top: 6px; }
.form-success {
  display: none;
  margin-top: 16px;
  padding: 12px 18px;
  border-radius: 14px;
  background: var(--liteblue);
  border: 1px solid var(--blue);
  color: var(--blue-dark);
  font-size: 14px;
}
.form-success.show { display: block; }
.contact-form-box .btn { width: 100%; }

/* ---------- 响应式补充 ---------- */
@media (max-width: 992px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-strip { grid-template-columns: repeat(2, 1fr); }
  .center-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .split { grid-template-columns: 1fr; gap: 34px; }
  .split-img img { height: 320px; }
  .about-badge { right: 6px; }
  .news-grid { grid-template-columns: 1fr; }
  .featured-news { grid-template-columns: 1fr; }
  .news-main { padding: 24px; }
  .contact-main { grid-template-columns: 1fr; }
  .contact-info { grid-template-columns: 1fr; }
  .center-card { grid-template-columns: 1fr; }
  .center-img { min-height: 190px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .tech-strip { grid-template-columns: 1fr; }
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--blue-deep);
  color: #fff;
  padding-top: 54px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 36px; }
.logo-footer { margin-bottom: 14px; }
.logo-footer .logo-text { color: #fff; }
.logo-footer .logo-text small { color: var(--liteblue-deep); }
.footer-brand p { font-size: 14px; color: rgba(227, 242, 253, 0.8); max-width: 320px; }
.footer-col h4 {
  font-size: 16px; letter-spacing: 1px; margin-bottom: 14px;
  color: #fff; position: relative; padding-bottom: 8px;
}
.footer-col h4::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 34px; height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--liteblue-deep), var(--blue));
}
.footer-col a, .footer-col p { display: block; font-size: 14px; color: rgba(227, 242, 253, 0.8); margin-bottom: 9px; transition: color 0.3s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.15); padding: 16px 0; }
.footer-bottom p { text-align: center; font-size: 13px; color: rgba(227, 242, 253, 0.6); }

/* ---------- 滚动动画 ---------- */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* 返回顶部 */
.back-top {
  position: fixed; right: 26px; bottom: 30px;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff; font-size: 18px;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(21, 101, 192, 0.4);
  opacity: 0; visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
  z-index: 900;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
  .promise-grid { grid-template-columns: repeat(3, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-contact-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute; top: 74px; left: 0; right: 0;
    flex-direction: column;
    background: #fff;
    padding: 14px 20px;
    gap: 6px;
    box-shadow: 0 12px 24px rgba(21, 101, 192, 0.15);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
  }
  .main-nav.open { max-height: 460px; }
  .main-nav a { padding: 12px 16px; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

  .hero-inner { flex-direction: column; text-align: center; }
  .hero-text p { margin: 0 auto 30px; }
  .hero-actions { justify-content: center; }
  .hero-smile { width: 320px; }
  .smile-arc { height: 180px; }
  .tooth { width: 26px; }

  .promise-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .cta-contact-grid { grid-template-columns: 1fr; }
  .cta-row { flex-direction: column; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .promise-grid { grid-template-columns: 1fr; }
}

/* ============================================
   CMS 适配（追加）
   ============================================ */
.cms-section{padding:80px 24px}
.cms-detail{max-width:900px;margin:0 auto}
.cms-detail>img{border-radius:var(--radius);margin:0 auto 12px;max-width:100%}
.cms-detail h1{font-size:2rem;margin:18px 0;color:var(--blue-dark)}
.cms-detail .lead{color:var(--text-soft);margin-bottom:20px;font-size:1.05rem}
.cms-detail .news-date-label{display:inline-block;background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;font-size:.82rem;font-weight:700;padding:5px 16px;border-radius:999px}
.cms-content h2{font-size:1.5rem;margin:24px 0 12px;color:var(--blue-dark)}
.cms-content h3{font-size:1.25rem;margin:20px 0 10px;color:var(--blue-dark)}
.cms-content p,.cms-content ul,.cms-content li{color:var(--text);margin-bottom:15px;line-height:1.9}
.cms-content ul{padding-left:18px;list-style:disc}
.cms-content li{color:var(--text-soft)}
.cms-content img{border-radius:var(--radius)}
.cms-back{display:inline-block;color:var(--blue);font-size:.9rem;font-weight:700;margin-bottom:20px}
.cms-back:hover{text-decoration:underline}
.spec-list{list-style:none;padding:0;margin:0}
.spec-list li{color:var(--text-soft);padding:10px 0;border-bottom:2px dashed var(--liteblue-deep);font-size:.9rem}
.cms-pager{padding:30px 0;text-align:center}
.cms-pager .pagination{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;list-style:none;padding:0;margin:0}
.cms-pager .pagination a{width:auto;min-width:42px;height:42px;padding:0 14px}
.cms-pager .page-link{border:1px solid var(--liteblue-deep);border-radius:999px;background:#fff;color:var(--blue-dark);font-size:14px;font-weight:600;transition:.3s;display:inline-flex;align-items:center;justify-content:center}
.cms-pager .page-link:hover{border-color:var(--blue);color:var(--blue)}
.cms-pager .page-item.active .page-link{background:linear-gradient(135deg,var(--blue),var(--blue-deep));border-color:transparent;color:#fff}
.cms-pager .page-item.disabled .page-link{opacity:.5;pointer-events:none}
.form-alert-err{background:#fdecea;border:1px solid #f3c6c0;color:#b23b35;padding:14px 18px;border-radius:14px;margin-bottom:18px;font-size:14px}
.form-alert-err li{color:#b23b35}

/* ---------- 分类筛选标签 ---------- */
.cat-tabs{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:40px;position:relative;z-index:1}
.cat-tab{padding:10px 22px;border-radius:999px;border:1.5px solid var(--liteblue-deep);background:#fff;color:var(--blue-dark);font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;transition:.3s}
.cat-tab:hover{border-color:var(--blue);color:var(--blue)}
.cat-tab.active{background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(30,136,229,.35)}
.center-tag{position:absolute;top:14px;right:16px;background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;font-size:12px;padding:4px 14px;border-radius:999px;box-shadow:0 4px 10px rgba(13,71,161,.35)}
.center-body .center-tag{margin-top:2px}

/* ---------- 荣誉资质 ---------- */
.honor-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1100px;margin:0 auto}
.honor-card{background:#fff;border:1px solid var(--liteblue);border-radius:24px;overflow:hidden;box-shadow:0 4px 16px rgba(21,101,192,.08);transition:transform .4s,box-shadow .4s}
.honor-card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.honor-img{height:140px;overflow:hidden;background:linear-gradient(135deg,var(--liteblue),#fff)}
.honor-img img{width:100%;height:100%;object-fit:cover}
.honor-badge{display:flex;align-items:center;justify-content:center;font-size:52px;font-weight:800;color:var(--blue);background:linear-gradient(135deg,var(--liteblue),var(--liteblue-deep))}
.honor-body{padding:20px 22px 24px}
.honor-body h3{font-size:17px;color:var(--blue-dark);margin-bottom:8px}
.honor-body p{font-size:13.5px;color:var(--text-soft);margin-bottom:12px}
.honor-year{display:inline-block;font-size:12px;color:var(--blue);background:var(--liteblue);border-radius:999px;padding:3px 14px}

/* ---------- 淡入动画（.fade-in） ---------- */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

@media (max-width: 768px) {
  .honor-grid{grid-template-columns:1fr}
}