/* ==========================================================
   兄弟营石材养护 · 全站样式
   配色：深绿 #163a2d / #1e4d3b + 米金 #c9a86a / #d4b978
   移动端优先（Mobile First），≥768px / ≥1024px 断点增强
   无外网依赖，全部本地资源
   ========================================================== */

:root {
  --green-dark: #163a2d;
  --green: #1e4d3b;
  --green-light: #2a6350;
  --gold: #c9a86a;
  --gold-light: #d4b978;
  --cream: #f7f4ee;
  --paper: #fdfcf9;
  --text: #2b2b28;
  --text-light: #6b6b63;
  --border: #e3ddd0;
  --radius: 8px;
  --shadow: 0 4px 16px rgba(22, 58, 45, .10);
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "微软雅黑", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  color: var(--text);
  background: var(--paper);
  line-height: 1.7;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--green); text-decoration: none; }
ul, ol { list-style: none; }

.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 16px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--green-dark);
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; }
.brand img { width: 36px; height: 36px; border-radius: 4px; }
.brand-name { font-size: 1.05rem; font-weight: 700; letter-spacing: 1px; }
.brand-name small { display: block; font-size: .62rem; font-weight: 400; color: var(--gold-light); letter-spacing: 2px; }

.nav-toggle {
  display: block; background: none; border: 1px solid var(--gold);
  color: var(--gold); font-size: 1.2rem; line-height: 1;
  padding: 6px 10px; border-radius: 4px; cursor: pointer;
}
.site-nav {
  display: none; position: absolute; top: 60px; left: 0; right: 0;
  background: var(--green-dark); border-top: 1px solid rgba(201,168,106,.25);
  padding: 8px 0 12px;
}
.site-nav.open { display: block; }
.site-nav a {
  display: block; color: #e8e0cd; padding: 11px 24px; font-size: .95rem;
}
.site-nav a:hover, .site-nav a.active { color: var(--gold-light); background: rgba(255,255,255,.04); }

.nav-tel {
  display: none; color: var(--gold-light); font-weight: 700; font-size: .95rem;
  border: 1px solid var(--gold); padding: 5px 14px; border-radius: 20px; white-space: nowrap;
}

@media (min-width: 768px) {
  .nav-toggle { display: none; }
  .site-nav {
    display: flex !important; position: static; background: none;
    border: none; padding: 0; gap: 4px;
  }
  .site-nav a { padding: 8px 14px; }
  .nav-tel { display: inline-block; }
}

/* ---------- 首屏 Hero ---------- */
.hero {
  background:
    linear-gradient(rgba(22,58,45,.78), rgba(22,58,45,.88)),
    url('../img/banner/hero-hotel.jpg') center/cover no-repeat;
  color: #fff;
  padding: 48px 0 56px;
  text-align: center;
}
.hero .eyebrow {
  display: inline-block; color: var(--gold-light); font-size: .85rem;
  letter-spacing: 4px; border: 1px solid rgba(201,168,106,.5);
  padding: 4px 16px; border-radius: 20px; margin-bottom: 20px;
}
.hero h1 { font-size: 1.9rem; line-height: 1.35; letter-spacing: 2px; margin-bottom: 14px; }
.hero h1 em { font-style: normal; color: var(--gold-light); }
.hero .sub { color: #cfe0d6; font-size: .98rem; margin-bottom: 28px; }

.hero-cta { display: flex; flex-direction: column; gap: 12px; align-items: center; margin-bottom: 8px; }
.btn {
  display: inline-block; padding: 13px 34px; border-radius: 6px;
  font-size: 1.05rem; font-weight: 700; letter-spacing: 1px; cursor: pointer;
  border: none; transition: transform .15s, box-shadow .15s;
}
.btn:active { transform: scale(.97); }
.btn-gold { background: linear-gradient(135deg, var(--gold-light), var(--gold)); color: var(--green-dark); box-shadow: 0 4px 14px rgba(201,168,106,.4); }
.btn-outline { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.6); }
.btn-green { background: var(--green); color: #fff; }
.btn-block { display: block; width: 100%; text-align: center; }

@media (min-width: 768px) {
  .hero { padding: 72px 0 80px; }
  .hero h1 { font-size: 2.7rem; }
  .hero-cta { flex-direction: row; justify-content: center; }
}

/* ---------- 留资表单 ---------- */
.lead-form {
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 22px 18px; text-align: left;
}
.lead-form h3 { color: var(--green-dark); font-size: 1.1rem; text-align: center; margin-bottom: 4px; }
.lead-form .form-tip { text-align: center; color: var(--text-light); font-size: .8rem; margin-bottom: 16px; }
.form-row { margin-bottom: 12px; }
.form-row label { display: block; font-size: .85rem; color: var(--text-light); margin-bottom: 4px; }
.form-row label .req { color: #c0392b; }
.form-row input, .form-row select {
  width: 100%; padding: 11px 12px; font-size: 1rem; color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; background: var(--cream);
  appearance: auto;
}
.form-row input:focus, .form-row select:focus { outline: 2px solid var(--gold); border-color: var(--gold); }
.form-msg { display: none; margin-top: 12px; padding: 12px; border-radius: 6px; font-size: .9rem; }
.form-msg.ok { display: block; background: #eaf5ee; color: var(--green-dark); border: 1px solid #bcd9c6; }
.form-msg.err { display: block; background: #fdecea; color: #a03227; border: 1px solid #f2c4bd; }

.hero-form-wrap { max-width: 480px; margin: 32px auto 0; }

@media (min-width: 768px) {
  .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
  .form-grid .form-row.full { grid-column: 1 / -1; }
}

/* ---------- 通用 Section ---------- */
.section { padding: 48px 0; }
.section.alt { background: var(--cream); }
.section-head { text-align: center; margin-bottom: 32px; }
.section-head .tag {
  display: inline-block; color: var(--gold); font-size: .78rem; letter-spacing: 3px;
  margin-bottom: 6px; font-weight: 700;
}
.section-head h2 { color: var(--green-dark); font-size: 1.55rem; letter-spacing: 1px; }
.section-head h2::after {
  content: ""; display: block; width: 48px; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  margin: 12px auto 0; border-radius: 2px;
}
.section-head p { color: var(--text-light); font-size: .92rem; margin-top: 10px; }

@media (min-width: 768px) {
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 1.9rem; }
}

/* ---------- 数字背书 ---------- */
.stats { background: linear-gradient(rgba(10,10,10,.72), rgba(10,10,10,.78)), url('../img/banner/tex-black.jpg') center/cover no-repeat; color: #fff; padding: 40px 0; }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 12px; text-align: center; }
.stat .num { font-size: 1.9rem; font-weight: 800; color: var(--gold-light); letter-spacing: 1px; }
.stat .num span { font-size: 1rem; }
.stat .label { font-size: .85rem; color: #cfe0d6; margin-top: 2px; }
@media (min-width: 768px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .stat .num { font-size: 2.4rem; }
}

/* ---------- 广告语横幅 ---------- */
.slogan-strip {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--green-dark); text-align: center;
  padding: 12px 16px; font-size: .92rem; font-weight: 700; letter-spacing: 1px;
  line-height: 1.7;
}
.slogan-strip .sep { opacity: .45; margin: 0 10px; }
@media (max-width: 640px) { .slogan-strip .sep { display: block; height: 0; overflow: hidden; } }

/* ---------- 场景展示 ---------- */
.scene-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.scene-item { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.scene-item img { width: 100%; height: 220px; object-fit: cover; display: block; transition: transform .3s; }
.scene-item:hover img { transform: scale(1.04); }
.scene-item .scene-cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: linear-gradient(transparent, rgba(22,58,45,.92));
  color: #fff; padding: 34px 16px 14px;
}
.scene-item .scene-cap h3 { font-size: 1.05rem; color: var(--gold-light); margin-bottom: 4px; }
.scene-item .scene-cap p { font-size: .82rem; color: #e8f0ea; }
@media (min-width: 768px) { .scene-grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------- 服务四大类 ---------- */
.service-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.service-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 20px; box-shadow: var(--shadow); position: relative;
  border-top: 3px solid var(--gold); transition: transform .2s;
}
.service-card:hover { transform: translateY(-4px); }
.service-card .icon { font-size: 1.8rem; margin-bottom: 10px; }
.service-card h3 { color: var(--green-dark); font-size: 1.15rem; margin-bottom: 8px; }
.service-card p { color: var(--text-light); font-size: .88rem; margin-bottom: 14px; }
.service-card .more { color: var(--gold); font-weight: 700; font-size: .88rem; }
@media (min-width: 768px) { .service-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .service-grid { grid-template-columns: repeat(4, 1fr); } }

.matrix-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 768px) { .matrix-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .matrix-grid { grid-template-columns: repeat(3, 1fr); } }
.matrix-card { background: #fff; border: 1px solid var(--border); border-left: 3px solid var(--gold); border-radius: var(--radius); padding: 18px 18px; box-shadow: var(--shadow); }
.matrix-card h4 { margin: 0 0 8px 0; color: var(--green); font-size: 1.02rem; }
.matrix-card p { margin: 0; font-size: .86rem; color: var(--muted); line-height: 1.7; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.case-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--border);
}
.case-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--green); }
.case-card .case-body { padding: 14px 16px 18px; }
.case-card h3 { color: var(--green-dark); font-size: 1.02rem; margin-bottom: 4px; }
.case-card .case-meta { color: var(--gold); font-size: .8rem; font-weight: 700; letter-spacing: 1px; margin-bottom: 8px; }
.case-card p { color: var(--text-light); font-size: .85rem; }
@media (min-width: 640px) { .case-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .case-grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------- 公司简介（首页） ---------- */
.intro-flex { display: grid; grid-template-columns: 1fr; gap: 28px; align-items: center; }
.intro-flex img { border-radius: var(--radius); box-shadow: var(--shadow); }
.intro-text h2 { color: var(--green-dark); font-size: 1.5rem; margin-bottom: 14px; }
.intro-text p { color: var(--text-light); font-size: .93rem; margin-bottom: 12px; }
.intro-points { margin-top: 14px; }
.intro-points li {
  padding: 7px 0 7px 26px; position: relative; font-size: .92rem; color: var(--text);
}
.intro-points li::before {
  content: "✓"; position: absolute; left: 0; top: 7px;
  color: #fff; background: var(--gold); width: 18px; height: 18px;
  border-radius: 50%; font-size: .7rem; text-align: center; line-height: 18px; font-weight: 700;
}
@media (min-width: 1024px) { .intro-flex { grid-template-columns: 1fr 1.2fr; } }

/* ---------- 服务详情页 ---------- */
.page-banner {
  background:
    linear-gradient(rgba(22,58,45,.82), rgba(22,58,45,.88)),
    url('../img/banner/banner-office.jpg') center/cover no-repeat;
  color: #fff; text-align: center; padding: 44px 16px;
}
.page-banner h1 { font-size: 1.7rem; letter-spacing: 2px; margin-bottom: 8px; }
.page-banner p { color: #cfe0d6; font-size: .92rem; }
.breadcrumb { font-size: .8rem; color: #9db8aa; margin-bottom: 14px; }
.breadcrumb a { color: var(--gold-light); }

.process-steps { display: grid; grid-template-columns: 1fr; gap: 14px; counter-reset: step; }
.step {
  background: #fff; border: 1px solid var(--border); border-left: 4px solid var(--gold);
  border-radius: 6px; padding: 16px 18px; box-shadow: var(--shadow);
}
.step h3 { color: var(--green-dark); font-size: 1rem; margin-bottom: 6px; }
.step p { color: var(--text-light); font-size: .88rem; }
@media (min-width: 768px) { .process-steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .process-steps { grid-template-columns: repeat(3, 1fr); } }

.scene-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.scene-list li {
  background: var(--cream); border: 1px solid var(--border); border-radius: 6px;
  padding: 12px 14px; font-size: .9rem; color: var(--text); text-align: center;
}
@media (min-width: 768px) { .scene-list { grid-template-columns: repeat(4, 1fr); } }

.price-box {
  background: linear-gradient(135deg, var(--green-dark), var(--green));
  color: #fff; border-radius: var(--radius); padding: 28px 22px; text-align: center;
}
.price-box h3 { color: var(--gold-light); font-size: 1.2rem; margin-bottom: 10px; }
.price-box p { color: #cfe0d6; font-size: .92rem; margin-bottom: 18px; }

.two-col { display: grid; grid-template-columns: 1fr; gap: 32px; }
@media (min-width: 1024px) { .two-col { grid-template-columns: 1.4fr 1fr; align-items: start; } }

/* ---------- 关于我们 ---------- */
.story-block { margin-bottom: 36px; }
.story-block h3 { color: var(--green-dark); font-size: 1.2rem; margin-bottom: 10px; padding-left: 12px; border-left: 4px solid var(--gold); }
.story-block p { color: var(--text-light); font-size: .93rem; margin-bottom: 10px; }

.cert-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.cert-item {
  background: var(--cream); border: 1px solid var(--gold); border-radius: 6px;
  display: flex; flex-direction: column; overflow: hidden; color: var(--text-light);
  font-size: .85rem; text-align: center; padding: 0; text-decoration: none;
  transition: transform .2s;
}
.cert-item:hover { transform: translateY(-3px); }
.cert-item img { width: 100%; height: 130px; object-fit: cover; display: block; background: #fff; }
.cert-item strong { color: var(--green-dark); font-size: .82rem; padding: 8px 6px; display: block; }
@media (min-width: 768px) { .cert-grid { grid-template-columns: repeat(4, 1fr); } }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.contact-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow); text-align: center;
}
.contact-card .icon { font-size: 1.6rem; margin-bottom: 8px; }
.contact-card h3 { color: var(--green-dark); font-size: 1rem; margin-bottom: 6px; }
.contact-card p { color: var(--text-light); font-size: .9rem; }
.contact-card a { color: var(--gold); font-weight: 700; }
@media (min-width: 768px) { .contact-grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------- 底部悬浮 CTA（移动端） ---------- */
.float-cta {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 99;
  display: flex; background: #fff; box-shadow: 0 -2px 12px rgba(0,0,0,.15);
}
.float-cta a {
  flex: 1; text-align: center; padding: 13px 0; font-weight: 700; font-size: .98rem;
}
.float-cta .cta-tel { background: var(--green-dark); color: var(--gold-light); }
.float-cta .cta-form { background: linear-gradient(135deg, var(--gold-light), var(--gold)); color: var(--green-dark); }
@media (min-width: 768px) { .float-cta { display: none; } }
body { padding-bottom: 52px; }
@media (min-width: 768px) { body { padding-bottom: 0; } }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--green-dark); color: #9db8aa; padding: 40px 0 90px; font-size: .85rem; }
@media (min-width: 768px) { .site-footer { padding-bottom: 40px; } }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 26px; margin-bottom: 26px; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.footer-grid h4 { color: var(--gold-light); font-size: .95rem; margin-bottom: 12px; letter-spacing: 1px; }
.footer-grid a { display: block; color: #9db8aa; padding: 3px 0; }
.footer-grid a:hover { color: var(--gold-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12); padding-top: 20px;
  text-align: center; line-height: 2; font-size: .8rem;
}
.footer-bottom a { color: #9db8aa; }

/* ---------- 实拍图区 ---------- */
.photo-row { display: grid; grid-template-columns: 1fr; gap: 16px; margin: 8px 0 4px; }
@media (min-width: 768px) { .photo-row { grid-template-columns: repeat(2, 1fr); } }
.photo-row figure { margin: 0; }
.photo-row img {
  width: 100%; max-width: 100%; border-radius: 8px; margin: 0;
  object-fit: cover; aspect-ratio: 4 / 3; box-shadow: var(--shadow); background: var(--cream);
}
.photo-row figcaption { font-size: .8rem; color: var(--text-light); text-align: center; margin-top: 6px; }

/* 记忆点 slogan（页脚横幅/页首） */
.slogan {
  display: inline-block; margin-top: 14px; padding: 6px 18px;
  border: 1px solid rgba(201,168,106,.55); border-radius: 20px;
  color: var(--gold-light); font-size: .9rem; letter-spacing: 2px;
}

/* 数据背书格（硬化指标等） */
.data-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
@media (min-width: 768px) { .data-grid { grid-template-columns: repeat(4, 1fr); } }
.data-item {
  background: var(--cream); border: 1px solid var(--border); border-radius: 6px;
  padding: 14px 10px; text-align: center;
}
.data-item .num { color: var(--green); font-weight: 800; font-size: 1.25rem; letter-spacing: .5px; }
.data-item .label { font-size: .78rem; color: var(--text-light); margin-top: 3px; line-height: 1.5; }

/* 首页八大板块：3列网格 */
.service-grid.cols-3 { grid-template-columns: 1fr; }
@media (min-width: 768px) { .service-grid.cols-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .service-grid.cols-3 { grid-template-columns: repeat(3, 1fr); } }

/* 警示/立场框（反对强酸清洗等） */
.stance-box {
  background: #fff; border: 1px solid var(--border); border-left: 4px solid #b03a2e;
  border-radius: 6px; padding: 18px 20px; box-shadow: var(--shadow);
}
.stance-box h3 { color: #b03a2e; font-size: 1.02rem; margin-bottom: 8px; }
.stance-box p { color: var(--text-light); font-size: .9rem; margin-bottom: 6px; }

/* ---------- 工具类 ---------- */
.text-center { text-align: center; }
.mt-24 { margin-top: 24px; }
.gold { color: var(--gold); }