/* ============================================================
   迈瑞口腔 MAIRUI DENTAL — 全站样式
   纯 CSS / 无框架 / 响应式（1024 / 768 / 480 三档断点）
   ============================================================ */

:root {
  --ink: #051127;            /* 正文深藏青 */
  --navy: #06152b;           /* 页脚深藏青 */
  --accent: #2d72ff;         /* 主蓝 */
  --accent-dark: #1e5ae0;
  --teal: #14b8d4;           /* 青色点缀 */
  --teal-soft: #e6f8fc;
  --bg-gray: #f6f6f6;
  --line: #e8ecf3;
  --muted: #5a6478;
  --shadow: 0 12px 32px rgba(5, 17, 39, 0.08);
  --radius: 16px;
  --header-h: 76px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.7;
  font-size: 16px;
}

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s, border-color 0.3s;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(5, 17, 39, 0.08); border-color: var(--line); }

.header-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand svg { width: 40px; height: 40px; flex: none; }
.brand-name { font-size: 22px; font-weight: 700; letter-spacing: 2px; }
.brand-name em { font-style: normal; color: var(--accent); }
.brand-sub { display: block; font-size: 10px; letter-spacing: 3.5px; color: var(--muted); font-weight: 400; }

.main-nav ul { display: flex; gap: 8px; }
.main-nav a {
  display: block; padding: 10px 18px;
  font-size: 16px; color: var(--ink);
  border-radius: 8px; position: relative;
  transition: color 0.2s;
}
.main-nav a::after {
  content: ""; position: absolute; left: 18px; right: 18px; bottom: 4px;
  height: 3px; border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--teal));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.25s;
}
.main-nav a:hover { color: var(--accent); }
.main-nav a.active { color: var(--accent); font-weight: 700; }
.main-nav a.active::after, .main-nav a:hover::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px; border: none; background: none; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span {
  width: 24px; height: 2.5px; border-radius: 2px; background: var(--ink);
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------------- 页面主体让位固定头 ---------------- */
.page { padding-top: var(--header-h); }

/* ---------------- Hero（全屏背景图 + 文字叠加，对齐原站版式） ---------------- */
.hero {
  position: relative;
  background: #0a1c33 url("https://img.cdn.xiepingcong.com/webvista/mairui/images/hero.png") center / cover no-repeat;
  overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(5, 17, 39, 0.78) 0%, rgba(5, 17, 39, 0.48) 45%, rgba(5, 17, 39, 0.12) 100%);
}
.hero-inner {
  position: relative; z-index: 1;
  min-height: 600px;
  display: flex; align-items: center;
  max-width: 1200px; margin: 0 auto; padding: 60px 24px;
}
.hero-copy { max-width: 580px; }
.hero-copy .eyebrow { margin-bottom: 18px; color: #7fdcef; }
.hero-title {
  font-size: 42px; line-height: 1.3; font-weight: 700; margin-bottom: 22px; color: #fff;
}
.hero-desc { color: rgba(255, 255, 255, 0.85); font-size: 16.5px; max-width: 30em; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------------- 区块通用 ---------------- */
.section { padding: 64px 0; }
.section.gray { background: var(--bg-gray); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600;
  letter-spacing: 4px; text-transform: uppercase; color: var(--teal);
  margin-bottom: 10px;
}
.section-head h2, .page-banner h1 { font-size: 32px; font-weight: 700; }
.section-head .bar {
  width: 46px; height: 4px; border-radius: 4px; margin: 16px auto 0;
  background: linear-gradient(90deg, var(--accent), var(--teal));
}
.section-head p { color: var(--muted); margin-top: 14px; }
.center { text-align: center; margin-top: 44px; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 34px; border-radius: 999px; border: none;
  font-size: 16px; cursor: pointer; transition: 0.25s;
}
.btn-primary {
  background: linear-gradient(92deg, var(--accent), var(--teal));
  color: #fff; box-shadow: 0 10px 24px rgba(45, 114, 255, 0.32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(45, 114, 255, 0.4); }
.btn-ghost {
  background: #fff; color: var(--accent);
  border: 1.5px solid rgba(45, 114, 255, 0.45);
}
.btn-ghost:hover { background: rgba(45, 114, 255, 0.06); transform: translateY(-2px); }

/* ---------------- 首页：简介 ---------------- */
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.intro-media { position: relative; }
.intro-media img { border-radius: var(--radius); box-shadow: var(--shadow); }
.intro-media .float-badge {
  position: absolute; right: -14px; bottom: -20px;
  background: #fff; border-radius: 14px; box-shadow: var(--shadow);
  padding: 14px 20px; display: flex; align-items: center; gap: 12px;
}
.float-badge strong { font-size: 24px; color: var(--accent); }
.float-badge span { font-size: 13px; color: var(--muted); display: block; }
/* 首页简介：双图叠放拼贴（对齐原站版式） */
.intro-stack { position: relative; padding: 0 46px 46px 0; }
.intro-stack .stack-main { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); }
.intro-stack .stack-sub {
  position: absolute; right: 0; bottom: 0; width: 30%;
  border-radius: 14px; border: 6px solid #fff; background: #fff;
  box-shadow: 0 14px 30px rgba(5, 17, 39, 0.16);
}
.intro-copy h3 { font-size: 30px; margin-bottom: 18px; }
.intro-copy p { color: var(--muted); margin-bottom: 14px; text-align: justify; }
.intro-points { margin: 20px 0 28px; display: grid; gap: 10px; }
.intro-points li {
  display: flex; gap: 10px; align-items: flex-start; color: var(--ink); font-size: 15.5px;
}
.intro-points svg { width: 20px; height: 20px; flex: none; margin-top: 4px; }

/* ---------------- 首页：数据（对齐原站亮蓝色带 + 右上装饰） ---------------- */
.stats-band { position: relative; background: linear-gradient(115deg, #2b66f2, #2d72ff); color: #fff; }
.stats-deco {
  position: absolute; right: 36px; top: -66px; width: 152px; height: auto;
  filter: drop-shadow(0 10px 18px rgba(5, 17, 39, 0.18));
  pointer-events: none;
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  padding: 28px 0;
}
.stat { text-align: center; position: relative; }
.stat + .stat::before {
  content: ""; position: absolute; left: -12px; top: 12%; bottom: 12%;
  width: 1px; background: rgba(255, 255, 255, 0.32);
}
.stat strong { font-size: 42px; font-weight: 700; display: block; }
.stat strong i { font-style: normal; color: rgba(255, 255, 255, 0.95); }
.stat > span { color: rgba(255, 255, 255, 0.82); font-size: 15px; letter-spacing: 2px; }

/* ---------------- 首页：诊疗项目 ---------------- */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.service-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 28px; transition: 0.3s; position: relative; overflow: hidden;
}
.service-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: linear-gradient(180deg, var(--accent), var(--teal));
  opacity: 0; transition: 0.3s;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 58px; height: 58px; border-radius: 14px; margin-bottom: 20px;
  background: var(--teal-soft); display: flex; align-items: center; justify-content: center;
}
.service-icon svg { width: 32px; height: 32px; }
.service-card h3 { font-size: 20px; margin-bottom: 4px; }
.service-card .en { font-size: 12.5px; letter-spacing: 1px; color: var(--teal); text-transform: uppercase; margin-bottom: 12px; }
.service-card p { color: var(--muted); font-size: 14.5px; }
/* 首页诊疗项目：图片卡（对齐原站版式） */
.svc-card {
  position: relative; display: block; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 16 / 10; box-shadow: 0 8px 24px rgba(5, 17, 39, 0.08); transition: 0.3s;
}
.svc-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.svc-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.svc-card:hover img { transform: scale(1.05); }
.svc-mask {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(5, 17, 39, 0.06) 0%, rgba(5, 17, 39, 0.14) 55%, rgba(5, 17, 39, 0.6) 100%);
}
.svc-label { position: absolute; left: 18px; bottom: 14px; color: #fff; }
.svc-label strong { display: block; font-size: 17px; letter-spacing: 1px; text-shadow: 0 2px 8px rgba(5, 17, 39, 0.45); }
.svc-label span { font-size: 12.5px; opacity: 0.85; letter-spacing: 0.5px; }

/* ---------------- 首页：评价 ---------------- */
.testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.testi-card {
  background: #fff; border-radius: var(--radius); padding: 30px 28px;
  box-shadow: 0 8px 26px rgba(5, 17, 39, 0.06); position: relative;
  transition: 0.3s; display: flex; flex-direction: column;
}
.testi-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.testi-card .quote-mark {
  font-size: 52px; line-height: 1; font-family: Georgia, serif;
  background: linear-gradient(92deg, var(--accent), var(--teal));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 8px;
}
.testi-card p { color: var(--muted); font-size: 15px; flex: 1; }
.testi-user { display: flex; align-items: center; gap: 14px; margin-top: 22px; }
.testi-user img { width: 52px; height: 52px; border-radius: 50%; object-fit: cover; }
.testi-user strong { display: block; font-size: 15px; }
.testi-user span { font-size: 13px; color: var(--muted); }
.testi-stars { color: #ffb31f; font-size: 14px; letter-spacing: 2px; margin-top: 4px; }

/* ---------------- 首页：资讯 ---------------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); transition: 0.3s; display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.news-card .thumb { overflow: hidden; aspect-ratio: 16 / 10; }
.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.news-card:hover .thumb img { transform: scale(1.05); }
.news-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.news-body h3 { font-size: 18px; line-height: 1.5; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-body p { color: var(--muted); font-size: 14px; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-meta { margin-top: 18px; font-size: 13px; color: #9aa3b5; display: flex; justify-content: space-between; align-items: center; }
.news-meta .more { color: var(--accent); font-weight: 600; }

/* ---------------- 内页 banner（照片通栏 + 遮罩，对齐原站） ---------------- */
.page-banner {
  position: relative;
  background: #0a1c33 var(--pb-img, none) center / cover no-repeat;
  padding: 147px 0 135px;
  overflow: hidden;
}
.page-banner::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(5, 17, 39, 0.74) 0%, rgba(5, 17, 39, 0.5) 55%, rgba(5, 17, 39, 0.3) 100%);
}
.page-banner > .container { position: relative; z-index: 1; }
.page-banner h1 { color: #fff; }
.page-banner .crumbs { font-size: 13.5px; color: rgba(255, 255, 255, 0.75); margin-top: 14px; }
.page-banner .crumbs a { color: #8fdcf0; }
.page-banner .crumbs a:hover { color: #fff; text-decoration: underline; }
.banner-about { --pb-img: url("https://img.cdn.xiepingcong.com/webvista/mairui/images/banner-about.jpg"); }
.banner-service { --pb-img: url("https://img.cdn.xiepingcong.com/webvista/mairui/images/banner-service.jpg"); }
.banner-news { --pb-img: url("https://img.cdn.xiepingcong.com/webvista/mairui/images/banner-news.jpg"); }
.banner-contact { --pb-img: url("https://img.cdn.xiepingcong.com/webvista/mairui/images/banner-contact.jpg"); }
.banner-detail { --pb-img: url("https://img.cdn.xiepingcong.com/webvista/mairui/images/banner-detail.jpg"); }

/* ---------------- 关于页 ---------------- */
.about-grid { display: grid; grid-template-columns: 1fr 1.08fr; gap: 56px; align-items: center; }
.about-grid .intro-copy p { text-align: justify; }
.about-numbers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 30px; }
.about-numbers .cell {
  background: var(--teal-soft); border-radius: 12px; padding: 18px 12px; text-align: center;
}
.about-numbers strong { font-size: 26px; color: var(--accent); display: block; }
.about-numbers span { font-size: 13px; color: var(--muted); }

.env-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-bottom: 26px; }
.env-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.env-item { border-radius: var(--radius); overflow: hidden; position: relative; box-shadow: 0 8px 24px rgba(5, 17, 39, 0.07); }
.env-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.env-grid-2 .env-item { aspect-ratio: 16 / 9; }
.env-grid-3 .env-item { aspect-ratio: 4 / 3; }
.env-item:hover img { transform: scale(1.05); }
.env-item figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 26px 18px 12px; color: #fff; font-size: 14.5px; letter-spacing: 1px;
  background: linear-gradient(transparent, rgba(5, 17, 39, 0.62));
}

.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.team-card {
  background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
  transition: 0.3s;
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.team-card .photo { aspect-ratio: 3 / 3.4; overflow: hidden; }
.team-card .photo img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform 0.5s; }
.team-card:hover .photo img { transform: scale(1.04); }
.team-body { padding: 22px 20px 24px; }
.team-body h3 { font-size: 19px; }
.team-body .role { color: var(--accent); font-size: 13.5px; margin: 2px 0 10px; }
.team-body .focus {
  display: inline-block; font-size: 12.5px; color: var(--teal); background: var(--teal-soft);
  border-radius: 999px; padding: 3px 12px; margin-bottom: 12px;
}
.team-body p { font-size: 14px; color: var(--muted); }

.quote-band { background: linear-gradient(120deg, var(--navy) 0%, #0b2a52 100%); color: #fff; }
.quote-inner { max-width: 860px; margin: 0 auto; text-align: center; padding: 74px 24px; }
.quote-inner .mark { font-size: 60px; line-height: 0.6; color: var(--teal); font-family: Georgia, serif; }
.quote-inner p { font-size: 18px; line-height: 2; margin: 18px 0 22px; color: rgba(255, 255, 255, 0.92); text-align: justify; }
.quote-inner footer { font-size: 14.5px; color: rgba(255, 255, 255, 0.65); letter-spacing: 2px; }

.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cert-card {
  background: #fff; border: 1.5px solid var(--line); border-radius: var(--radius);
  padding: 34px 26px; text-align: center; position: relative; transition: 0.3s;
}
.cert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(45, 114, 255, 0.35); }
.cert-card .seal {
  width: 74px; height: 74px; margin: 0 auto 18px; border-radius: 50%;
  background: radial-gradient(circle at 32% 30%, #fff 0%, var(--teal-soft) 58%, #bfeaf5 100%);
  border: 2px dashed var(--teal);
  display: flex; align-items: center; justify-content: center;
}
.cert-card .seal svg { width: 38px; height: 38px; }
.cert-card h3 { font-size: 18px; margin-bottom: 8px; }
.cert-card p { font-size: 13.5px; color: var(--muted); }
.cert-card .no { margin-top: 16px; font-size: 12px; color: #9aa3b5; letter-spacing: 1px; }

/* ---------------- 项目页 ---------------- */
.treatment-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center;
  padding: 46px 0;
}
.treatment-row + .treatment-row { border-top: 1px dashed var(--line); }
.treatment-row .pic { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.treatment-row .pic img { aspect-ratio: 3 / 2; object-fit: cover; width: 100%; transition: transform 0.5s; }
.treatment-row .pic:hover img { transform: scale(1.04); }
.treatment-row.flip .pic { order: 2; }
.treatment-copy .tag {
  display: inline-block; font-size: 12.5px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--teal); background: var(--teal-soft); border-radius: 999px; padding: 4px 14px;
  margin-bottom: 14px;
}
.treatment-copy h3 { font-size: 26px; margin-bottom: 6px; }
.treatment-copy .en { color: var(--teal); font-size: 13px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 16px; }
.treatment-copy p { color: var(--muted); margin-bottom: 12px; text-align: justify; }
.treatment-copy ul { margin-top: 14px; display: grid; gap: 8px; }
.treatment-copy ul li { display: flex; gap: 8px; align-items: flex-start; color: var(--ink); font-size: 15px; }
.treatment-copy ul svg { width: 18px; height: 18px; flex: none; margin-top: 5px; }

/* ---------------- 新闻页 ---------------- */
.news-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }

/* ---------------- 联系页 ---------------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.contact-card {
  background: #fff; border-radius: var(--radius); border: 1px solid var(--line);
  padding: 34px 28px; text-align: center; transition: 0.3s;
}
.contact-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.contact-card .ico {
  width: 62px; height: 62px; margin: 0 auto 18px; border-radius: 16px;
  background: var(--teal-soft); display: flex; align-items: center; justify-content: center;
}
.contact-card .ico svg { width: 30px; height: 30px; }
.contact-card h3 { font-size: 19px; margin-bottom: 8px; }
.contact-card p { color: var(--muted); font-size: 15px; }
.contact-card p b { color: var(--ink); }

.booking-card {
  max-width: 760px; margin: 0 auto; background: #fff; border-radius: var(--radius);
  border: 1px solid var(--line); box-shadow: 0 10px 30px rgba(5, 17, 39, 0.06);
  padding: 44px 46px;
}
.booking-card h3 { text-align: center; font-size: 24px; margin-bottom: 8px; }
.booking-card .tip { text-align: center; color: var(--muted); font-size: 14.5px; margin-bottom: 30px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-item { margin-bottom: 20px; }
.form-item label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.form-item label i { color: #ee0a24; font-style: normal; margin-left: 3px; }
.form-item input, .form-item textarea {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--line); border-radius: 10px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: #fbfcfe;
  transition: border-color 0.2s, box-shadow 0.2s; outline: none;
}
.form-item input:focus, .form-item textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(45, 114, 255, 0.12); background: #fff;
}
.form-item textarea { min-height: 120px; resize: vertical; }
.booking-card .btn { width: 100%; justify-content: center; }

/* ---------------- 文章详情 ---------------- */
.article-wrap {
  max-width: 860px; margin: 0 auto; background: #fff; border-radius: var(--radius);
  border: 1px solid var(--line); padding: 52px 58px;
}
.article-head { text-align: center; margin-bottom: 34px; }
.article-head h1 { font-size: 28px; line-height: 1.45; }
.article-head .meta { margin-top: 14px; color: #9aa3b5; font-size: 13.5px; display: flex; justify-content: center; gap: 18px; }
.article-cover { border-radius: 14px; overflow: hidden; margin-bottom: 32px; }
.article-cover img { width: 100%; }
.article-body { font-size: 16px; color: #2a3550; }
.article-body p { margin-bottom: 16px; text-align: justify; }
.article-body h3 {
  font-size: 19px; margin: 26px 0 12px; padding-left: 12px;
  border-left: 4px solid var(--accent); line-height: 1.4;
}
.article-body ul { margin: 0 0 16px 4px; display: grid; gap: 8px; }
.article-body ul li { padding-left: 20px; position: relative; text-align: justify; }
.article-body ul li::before {
  content: ""; position: absolute; left: 2px; top: 11px; width: 7px; height: 7px;
  border-radius: 50%; background: linear-gradient(120deg, var(--accent), var(--teal));
}
.article-tip {
  margin: 26px 0; background: var(--teal-soft); border-radius: 12px; padding: 16px 20px;
  color: #0b6a7d; font-size: 14.5px;
}
.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 40px; }
.article-nav a {
  border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px;
  transition: 0.25s; display: block;
}
.article-nav a:hover { border-color: var(--accent); box-shadow: 0 8px 20px rgba(45, 114, 255, 0.1); }
.article-nav span { display: block; font-size: 12.5px; color: #9aa3b5; margin-bottom: 4px; }
.article-nav a.next { text-align: right; }
.article-nav strong { font-size: 15px; font-weight: 600; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: var(--navy); color: rgba(255, 255, 255, 0.82); }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 0.8fr 1fr 1.1fr;
  gap: 44px; padding: 64px 0 48px;
}
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-sub { color: rgba(255, 255, 255, 0.5); }
.footer-brand p { margin-top: 18px; font-size: 14px; color: rgba(255, 255, 255, 0.62); }
.footer-col h4 {
  color: #fff; font-size: 16px; letter-spacing: 2px; margin-bottom: 20px; position: relative; padding-bottom: 12px;
}
.footer-col h4::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 26px; height: 3px;
  border-radius: 3px; background: linear-gradient(90deg, var(--accent), var(--teal));
}
.footer-col ul { display: grid; gap: 10px; font-size: 14px; }
.footer-col ul a { color: rgba(255, 255, 255, 0.62); transition: color 0.2s; }
.footer-col ul a:hover { color: #fff; }
.footer-col .line { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: rgba(255, 255, 255, 0.62); }
.footer-col .line svg { width: 17px; height: 17px; flex: none; margin-top: 4px; }
.footer-col .line b { color: #fff; font-weight: 600; }
.qr-wrap { display: flex; gap: 18px; }
.qr-box { text-align: center; }
.qr-box .qr {
  width: 92px; height: 92px; background: #fff; border-radius: 10px; padding: 7px;
}
.qr-box span { display: block; margin-top: 8px; font-size: 12.5px; color: rgba(255, 255, 255, 0.6); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0; text-align: center; font-size: 13px; color: rgba(255, 255, 255, 0.42);
}

/* ---------------- 返回顶部 / 浮动预约 ---------------- */
.to-top {
  position: fixed; right: 26px; bottom: 30px; width: 48px; height: 48px;
  border-radius: 50%; border: none; cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--teal)); color: #fff;
  box-shadow: 0 10px 24px rgba(45, 114, 255, 0.35);
  opacity: 0; visibility: hidden; transform: translateY(12px); transition: 0.3s; z-index: 900;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top svg { width: 20px; height: 20px; }

/* ---------------- 右侧悬浮快捷条（统一站点蓝色调） ---------------- */
.quick-bar {
  position: fixed; right: 20px; top: 50%; transform: translateY(-50%);
  z-index: 950; display: flex; flex-direction: column; gap: 12px;
}
.qb {
  position: relative; width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--teal)); color: #fff;
  display: flex; align-items: center; justify-content: center;
  border: none; cursor: pointer;
  box-shadow: 0 8px 18px rgba(45, 114, 255, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
}
.qb:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(45, 114, 255, 0.45); }
.qb svg { width: 21px; height: 21px; }
.qb::after {
  content: attr(data-tip);
  position: absolute; right: 58px; top: 50%;
  transform: translateY(-50%) translateX(8px);
  background: rgba(5, 17, 39, 0.9); color: #fff;
  font-size: 13px; padding: 7px 12px; border-radius: 8px; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: opacity 0.25s, transform 0.25s;
}
.qb:hover::after { opacity: 1; transform: translateY(-50%) translateX(0); }

/* ---------------- 滚动入场动画 ---------------- */
/* 仅在 JS 可用时应用初始隐藏（html.js 由内联脚本添加），保证无 JS/打印/截图时内容完整可见 */
.reveal { transition: opacity 0.7s ease, transform 0.7s ease; }
html.js .reveal { opacity: 0; transform: translateY(26px); }
html.js .reveal.in { opacity: 1; transform: none; }

/* ---------------- Toast ---------------- */
.toast {
  position: fixed; left: 50%; top: 34%; transform: translate(-50%, -50%) scale(0.94);
  background: rgba(5, 17, 39, 0.86); color: #fff; padding: 14px 26px; border-radius: 10px;
  font-size: 15px; opacity: 0; pointer-events: none; transition: 0.3s; z-index: 2000;
}
.toast.show { opacity: 1; transform: translate(-50%, -50%) scale(1); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner { min-height: 480px; }
  .hero-title { font-size: 36px; }
  .service-grid, .testi-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-grid, .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .intro-stack { max-width: 620px; }
  .treatment-row { grid-template-columns: 1fr; gap: 30px; padding: 38px 0; }
  .treatment-row.flip .pic { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); gap: 16px; }
  .stat strong { font-size: 32px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 30px rgba(5, 17, 39, 0.1);
    max-height: 0; overflow: hidden; transition: max-height 0.35s ease;
  }
  .main-nav.open { max-height: 340px; }
  .main-nav ul { flex-direction: column; padding: 12px 18px 18px; gap: 2px; }
  .main-nav a { padding: 13px 10px; border-bottom: 1px solid var(--line); }
  .main-nav a::after { display: none; }

  .section { padding: 60px 0; }
  .page-banner { padding: 69px 0 61px; }
  .section-head { margin-bottom: 38px; }
  .section-head h2 { font-size: 26px; }
  .hero-title { font-size: 30px; }
  .hero-desc { font-size: 15.5px; }
  .hero-inner { min-height: 420px; padding: 44px 20px; }
  .quick-bar { display: none; }

  .service-grid, .testi-grid, .news-grid, .news-list, .cert-grid, .contact-grid { grid-template-columns: 1fr; }
  .env-grid-2, .env-grid-3 { grid-template-columns: 1fr; }
  .env-grid-2 { margin-bottom: 26px; }
  .team-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; padding: 44px 0; }
  .stat + .stat::before { display: none; }

  .form-row { grid-template-columns: 1fr; }
  .booking-card { padding: 32px 22px; }
  .article-wrap { padding: 34px 22px; }
  .article-head h1 { font-size: 22px; }
  .article-nav { grid-template-columns: 1fr; }
  .article-nav a.next { text-align: left; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 0 36px; }
  .float-badge { right: 8px; }
  .stats-deco { display: none; }
  .intro-stack { padding: 0 30px 30px 0; }
}

@media (max-width: 480px) {
  body { font-size: 15px; }
  .container { padding: 0 18px; }
  .brand-name { font-size: 19px; }
  .hero-title { font-size: 26px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .team-grid { grid-template-columns: 1fr; }
  .about-numbers { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .about-numbers strong { font-size: 20px; }
  .treatment-copy h3 { font-size: 22px; }
  .stats-grid { gap: 20px; }
  .stat strong { font-size: 28px; }
}