/* ==========================================================================
   雄派环保 · 噪声治理行业站 — 设计系统
   工业深蓝 + 声波青 + 警示橙；移动优先，零外部依赖
   ========================================================================== */

:root {
  --forest-900: #051A10;
  --forest-800: #082317;
  --forest-700: #0B2C1D;
  --forest-600: #113823;
  --green-600: #1C7A3E;
  --green-500: #25954C;
  --green-400: #48B46E;
  --green-100: #E4F4E8;
  --lime-500: #3EA55F;
  --lime-400: #7ED957;
  --amber-500: #F0A020;
  --amber-600: #D98A0C;

  --ink: #0E1F16;
  --text: #1A2A21;
  --muted: #5A7364;
  --muted-2: #81978A;
  --line: #DEEAE2;
  --line-2: #EDF4EF;
  --mist: #F4F9F5;
  --paper: #FFFFFF;

  --shadow-sm: 0 1px 2px rgba(8, 35, 23, .06), 0 2px 8px rgba(8, 35, 23, .04);
  --shadow: 0 4px 12px rgba(8, 35, 23, .07), 0 12px 32px rgba(8, 35, 23, .06);
  --shadow-lg: 0 8px 24px rgba(8, 35, 23, .10), 0 24px 60px rgba(8, 35, 23, .10);
  --radius: 4px;
  --radius-lg: 8px;
  --container: 1240px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
          "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system,
          "Segoe UI", Roboto, sans-serif;
  --font-num: "DIN Alternate", "Bahnschrift", "Segoe UI Semibold", Impact, var(--font);
}

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

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }

h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.3; color: var(--ink); letter-spacing: -.01em; }
h1 { font-size: clamp(26px, 4.2vw, 42px); }
h2 { font-size: clamp(22px, 3vw, 32px); }
h3 { font-size: clamp(17px, 1.6vw, 20px); }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--forest-900);
  color: #A8C8B4;
  font-size: 13px;
  line-height: 38px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.topbar .container { display: flex; justify-content: space-between; gap: 16px; }
.topbar a:hover { color: #fff; }
.topbar strong { color: var(--amber-500); font-family: var(--font-num); letter-spacing: .04em; }
.topbar-right { display: flex; gap: 20px; }
@media (max-width: 860px) { .topbar-left { display: none; } .topbar .container { justify-content: center; } }

/* ---------- 头部 / 导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 900;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s ease;
}
.site-header.is-stuck { box-shadow: 0 2px 16px rgba(8, 35, 23, .09); }
.header-inner { display: flex; align-items: center; gap: 24px; height: 74px; }

.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-logo { height: 42px; width: auto; flex-shrink: 0; display: block; }
.brand-text b { display: block; font-size: 17px; color: var(--ink); line-height: 1.25; }
.brand-text span { display: block; font-size: 11px; color: var(--muted-2); letter-spacing: .12em; text-transform: uppercase; }

.main-nav { margin-left: auto; }
.main-nav > ul { display: flex; align-items: center; gap: 2px; }
.main-nav a.nav-link {
  display: block; padding: 10px 15px; font-size: 15px; font-weight: 500;
  color: var(--text); border-radius: var(--radius); white-space: nowrap;
}
.main-nav a.nav-link:hover, .main-nav a.nav-link.is-active { color: var(--green-600); background: var(--green-100); }
.nav-item { position: relative; }
.nav-item > .nav-link::after {
  content: ""; display: inline-block; width: 5px; height: 5px; margin-left: 6px;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px); opacity: .55;
}
.dropdown {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%) translateY(6px);
  min-width: 620px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 16px;
  opacity: 0; visibility: hidden; transition: all .2s ease;
}
.nav-item:hover .dropdown, .nav-item:focus-within .dropdown {
  opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
.dropdown-title { font-size: 12px; color: var(--muted-2); letter-spacing: .1em; margin-bottom: 10px; }
.dropdown-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; }
.dropdown-grid a {
  padding: 7px 10px; font-size: 13.5px; color: var(--text); border-radius: var(--radius);
}
.dropdown-grid a:hover { background: var(--mist); color: var(--green-600); }

.header-cta { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.header-tel { text-align: right; line-height: 1.2; }
.header-tel span { display: block; font-size: 11px; color: var(--muted-2); }
.header-tel b { font-family: var(--font-num); font-size: 20px; color: var(--green-600); letter-spacing: .02em; }
@media (max-width: 1460px) {
  .main-nav a.nav-link { padding: 10px 11px; font-size: 14.5px; }
  .header-inner { gap: 18px; }
}
@media (max-width: 1320px) { .header-tel { display: none; } }
@media (max-width: 1100px) { .dropdown { min-width: 460px; } .dropdown-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 980px) { .main-nav, .header-cta .btn { display: none; } .header-inner { justify-content: space-between; } }

.nav-toggle {
  display: none; width: 44px; height: 44px; border-radius: var(--radius);
  border: 1px solid var(--line); align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--ink); position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--ink);
}
.nav-toggle span::before { top: -6px; } .nav-toggle span::after { top: 6px; }
@media (max-width: 980px) { .nav-toggle { display: flex; } }

/* 移动端抽屉 */
.mobile-nav {
  position: fixed; inset: 0; z-index: 1000; background: rgba(5, 26, 16, .5);
  opacity: 0; visibility: hidden; transition: all .25s ease;
}
.mobile-nav.is-open { opacity: 1; visibility: visible; }
.mobile-nav-inner {
  position: absolute; top: 0; right: 0; width: min(340px, 86vw); height: 100%;
  background: #fff; padding: 20px; overflow-y: auto;
  transform: translateX(100%); transition: transform .3s ease;
}
.mobile-nav.is-open .mobile-nav-inner { transform: translateX(0); }
.mobile-nav h4 { font-size: 13px; color: var(--muted-2); letter-spacing: .1em; margin: 18px 0 8px; }
.mobile-nav a { display: block; padding: 10px 12px; border-radius: var(--radius); font-size: 15px; }
.mobile-nav a:hover { background: var(--mist); }
.mobile-nav .m-cities { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; }
.mobile-nav .m-cities a { font-size: 13.5px; padding: 8px; text-align: center; background: var(--mist); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; font-size: 15px; font-weight: 600; border-radius: var(--radius);
  transition: all .2s ease; white-space: nowrap;
}
.btn-primary { background: var(--green-600); color: #fff; box-shadow: 0 2px 10px rgba(28, 122, 62, .28); }
.btn-primary:hover { background: var(--green-500); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(28, 122, 62, .32); }
.btn-amber { background: var(--amber-500); color: #2A1B00; }
.btn-amber:hover { background: var(--amber-600); color: #fff; transform: translateY(-1px); }
.btn-ghost { border: 1px solid rgba(255, 255, 255, .38); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }
.btn-outline { border: 1px solid var(--line); color: var(--text); background: #fff; }
.btn-outline:hover { border-color: var(--green-500); color: var(--green-600); }
.btn-lg { padding: 15px 34px; font-size: 16px; }

/* ---------- 英雄区 ---------- */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: linear-gradient(135deg, var(--forest-900) 0%, var(--forest-700) 52%, var(--forest-600) 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: var(--hero-img); background-size: cover; background-position: center;
  opacity: .46; filter: blur(1.6px) saturate(1.15);
  transform: scale(1.04);
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 90% at 78% 40%, rgba(62, 165, 95, .22), transparent 62%),
              linear-gradient(90deg, rgba(5, 26, 16, .92) 0%, rgba(5, 26, 16, .58) 58%, rgba(5, 26, 16, .34) 100%);
}
.hero .container { position: relative; z-index: 2; padding-top: 78px; padding-bottom: 78px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 48px; align-items: center; }
@media (max-width: 960px) { .hero-grid { grid-template-columns: 1fr; gap: 34px; } }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 100px;
  background: rgba(62, 165, 95, .16); border: 1px solid rgba(126, 217, 87, .34);
  color: var(--lime-400); font-size: 13px; font-weight: 600; letter-spacing: .04em; margin-bottom: 20px;
}
.hero-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--lime-400);
  box-shadow: 0 0 0 4px rgba(126, 217, 87, .18); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%,100% { opacity: 1 } 50% { opacity: .35 } }

.hero h1 { color: #fff; font-size: clamp(28px, 4.4vw, 46px); line-height: 1.24; margin-bottom: 18px; }
.hero h1 em { font-style: normal; color: var(--lime-400); }
.hero-sub { font-size: clamp(15px, 1.3vw, 17px); color: #B5D0BE; line-height: 1.9; max-width: 620px; margin-bottom: 26px; }

.hero-kw { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; }
.hero-kw a {
  font-size: 13px; padding: 5px 13px; border-radius: 100px;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .16); color: #CFE4D5;
}
.hero-kw a:hover { background: rgba(126, 217, 87, .2); border-color: var(--lime-400); color: #fff; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 22px; font-size: 13.5px; color: #9DBFAA; }
.hero-points li { display: flex; align-items: center; gap: 7px; }
.hero-points li::before {
  content: ""; width: 14px; height: 14px; flex-shrink: 0; border-radius: 50%;
  background: rgba(126, 217, 87, .18);
  background-image: linear-gradient(45deg, transparent 45%, var(--lime-400) 45%, var(--lime-400) 55%, transparent 55%),
                    linear-gradient(-45deg, transparent 45%, var(--lime-400) 45%, var(--lime-400) 55%, transparent 55%);
}

/* 英雄区表单卡片 */
.hero-card {
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--radius-lg); padding: 26px; backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg);
}
.hero-card h3 { color: #fff; font-size: 19px; margin-bottom: 6px; }
.hero-card > p { font-size: 13.5px; color: #ADC8B7; margin-bottom: 18px; }
.hero-form { display: grid; gap: 10px; }
.hero-form input, .hero-form select, .hero-form textarea {
  width: 100%; padding: 11px 14px; font-family: inherit; font-size: 14px;
  border-radius: var(--radius); border: 1px solid rgba(255, 255, 255, .2);
  background: rgba(255, 255, 255, .08); color: #fff; outline: none; transition: all .2s;
}
.hero-form input::placeholder, .hero-form textarea::placeholder { color: #8CA694; }
.hero-form input:focus, .hero-form select:focus, .hero-form textarea:focus {
  border-color: var(--lime-400); background: rgba(255, 255, 255, .13);
}
.hero-form select option { color: var(--text); background: #fff; }
.hero-form .btn { width: 100%; margin-top: 4px; }
.hero-card-note { font-size: 12px; color: #8CA694; text-align: center; margin-top: 10px; }

/* 关键指标条 */
.stats-bar { background: var(--forest-800); border-top: 1px solid rgba(255, 255, 255, .08); }
.stats-bar ul { display: grid; grid-template-columns: repeat(4, 1fr); }
.stats-bar li { padding: 26px 20px; text-align: center; border-right: 1px solid rgba(255, 255, 255, .07); }
.stats-bar li:last-child { border-right: 0; }
.stats-bar b { display: block; font-family: var(--font-num); font-size: clamp(26px, 3vw, 38px);
  color: var(--lime-400); line-height: 1.1; letter-spacing: .01em; }
.stats-bar span { display: block; font-size: 13px; color: #94B4A0; margin-top: 6px; }
@media (max-width: 720px) { .stats-bar ul { grid-template-columns: repeat(2, 1fr); }
  .stats-bar li { border-bottom: 1px solid rgba(255,255,255,.07); }
  .stats-bar li:nth-child(2n) { border-right: 0; } }

/* ---------- 区块骨架 ---------- */
.section { padding: 76px 0; }
.section--mist { background: var(--mist); }
.section--tight { padding: 56px 0; }
@media (max-width: 720px) { .section { padding: 52px 0; } }

.sec-head { margin-bottom: 44px; }
.sec-head--center { text-align: center; }
.sec-head--center .sec-sub { margin-left: auto; margin-right: auto; }
.eyebrow {
  display: inline-block; font-size: 12.5px; font-weight: 700; letter-spacing: .18em;
  color: var(--green-600); text-transform: uppercase; margin-bottom: 12px;
}
.eyebrow::before { content: ""; display: inline-block; width: 22px; height: 2px;
  background: var(--amber-500); vertical-align: middle; margin-right: 9px; }
.sec-head h2 { margin-bottom: 14px; }
.sec-sub { font-size: 15.5px; color: var(--muted); max-width: 720px; line-height: 1.85; }
.sec-head--split { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.sec-head--split .sec-sub { margin-bottom: 0; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; transition: all .28s ease; display: flex; flex-direction: column;
}
.card:hover { border-color: var(--green-400); box-shadow: var(--shadow); transform: translateY(-3px); }
.card-media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--mist); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.card:hover .card-media img { transform: scale(1.05); }
.card-tag {
  position: absolute; top: 12px; left: 12px; z-index: 2; padding: 4px 11px; border-radius: 100px;
  background: rgba(5, 26, 16, .78); color: #fff; font-size: 12px; backdrop-filter: blur(4px);
}
.card-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { margin-bottom: 9px; font-size: 17px; }
.card-body h3 a:hover { color: var(--green-600); }
.card-body p { font-size: 14px; color: var(--muted); line-height: 1.78; flex: 1; }
.card-more { margin-top: 15px; font-size: 13.5px; font-weight: 600; color: var(--green-600);
  display: inline-flex; align-items: center; gap: 5px; }
.card-more::after { content: "→"; transition: transform .2s ease; }
.card:hover .card-more::after { transform: translateX(4px); }

/* 服务卡（图标式） */
.svc-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 28px 24px; transition: all .28s ease; height: 100%;
  display: flex; flex-direction: column;
}
.svc-card:hover { border-color: var(--green-400); box-shadow: var(--shadow); transform: translateY(-3px); }
.svc-icon {
  width: 52px; height: 52px; border-radius: 10px; margin-bottom: 16px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--green-600), var(--forest-600));
  display: grid; place-items: center; color: #fff; font-size: 20px; font-weight: 800;
  font-family: var(--font-num); box-shadow: 0 4px 12px rgba(28, 122, 62, .22);
}
.svc-card h3 { font-size: 17.5px; margin-bottom: 10px; }
.svc-card h3 a:hover { color: var(--green-600); }
.svc-card p { font-size: 14px; color: var(--muted); line-height: 1.78; flex: 1; }
.svc-card .kw-line { margin-top: 14px; font-size: 12.5px; color: var(--green-600); font-weight: 600; }

/* ---------- 优势块 ---------- */
.adv { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 900px) { .adv { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .adv { grid-template-columns: 1fr; } }
.adv-item { padding: 26px 22px; background: #fff; border-radius: var(--radius-lg);
  border: 1px solid var(--line); border-top: 3px solid var(--green-600); }
.adv-item:nth-child(2) { border-top-color: var(--lime-500); }
.adv-item:nth-child(3) { border-top-color: var(--amber-500); }
.adv-item:nth-child(4) { border-top-color: var(--forest-600); }
.adv-item b { display: block; font-size: 16.5px; color: var(--ink); margin-bottom: 10px; }
.adv-item p { font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ---------- 工艺流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; counter-reset: s; }
@media (max-width: 900px) { .flow { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .flow { grid-template-columns: 1fr; } }
.flow-item { text-align: center; padding: 24px 14px; background: #fff; border-radius: var(--radius-lg);
  border: 1px solid var(--line); position: relative; }
.flow-item img { width: 40px; height: 40px; margin: 0 auto 12px; object-fit: contain; }
.flow-item b { display: block; font-size: 15px; color: var(--ink); margin-bottom: 6px; }
.flow-item span { font-size: 12.5px; color: var(--muted-2); }
.flow-item em { position: absolute; top: 12px; right: 14px; font-style: normal; font-family: var(--font-num);
  font-size: 22px; color: var(--line); font-weight: 700; }

/* ---------- 城市网络 ---------- */
.city-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.city-chip {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 14px 16px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); font-size: 14.5px; font-weight: 500; transition: all .2s ease;
}
.city-chip:hover { border-color: var(--green-500); color: var(--green-600); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.city-chip.is-main { background: var(--forest-700); color: #fff; border-color: var(--forest-700); }
.city-chip.is-main:hover { background: var(--forest-600); color: #fff; }
.city-chip small { font-size: 11.5px; color: var(--muted-2); font-weight: 400; }
.city-chip.is-main small { color: rgba(255, 255, 255, .6); }

/* ---------- 内容排版 ---------- */
.prose { font-size: 16px; line-height: 1.95; color: var(--text); }
.prose h2 { margin: 42px 0 16px; padding-left: 16px; border-left: 4px solid var(--green-600); font-size: 22px; }
.prose h3 { margin: 30px 0 12px; font-size: 18px; color: var(--forest-700); }
.prose p { margin-bottom: 16px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 0; }
.prose li { position: relative; padding-left: 22px; margin-bottom: 10px; }
.prose li::before { content: ""; position: absolute; left: 4px; top: 12px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--green-500); }
.prose ol { counter-reset: n; }
.prose ol li { counter-increment: n; }
.prose ol li::before { content: counter(n); width: 18px; height: 18px; border-radius: 50%;
  background: var(--green-100); color: var(--green-600); font-size: 11.5px; font-weight: 700;
  display: grid; place-items: center; top: 8px; left: 0; }
.prose strong { color: var(--forest-700); font-weight: 700; }
.prose a { color: var(--green-600); border-bottom: 1px solid rgba(28, 122, 62, .3); }
.prose a:hover { border-bottom-color: var(--green-600); }

/* ---------- 两栏内容布局 ---------- */
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 40px; align-items: start; }
@media (max-width: 980px) { .layout { grid-template-columns: 1fr; gap: 30px; } }
.sidebar { position: sticky; top: 92px; display: grid; gap: 20px; }
@media (max-width: 980px) { .sidebar { position: static; } }

.side-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.side-box > h3 { padding: 15px 20px; font-size: 15.5px; background: var(--forest-700); color: #fff; }
.side-box > .side-body { padding: 16px 20px 20px; }
.side-links li { border-bottom: 1px dashed var(--line-2); }
.side-links li:last-child { border-bottom: 0; }
.side-links a { display: flex; align-items: center; justify-content: space-between;
  padding: 10px 0; font-size: 14px; color: var(--text); }
.side-links a::after { content: "›"; color: var(--muted-2); font-size: 16px; }
.side-links a:hover { color: var(--green-600); }
.side-links a:hover::after { color: var(--green-600); }
.side-cta { background: linear-gradient(150deg, var(--forest-800), var(--forest-600)); color: #fff;
  border: 0; padding: 26px 22px; text-align: center; border-radius: var(--radius-lg); }
.side-cta b { display: block; font-size: 17px; margin-bottom: 6px; }
.side-cta p { font-size: 13px; color: #ADC8B7; margin-bottom: 16px; }
.side-cta .tel { font-family: var(--font-num); font-size: 25px; color: var(--amber-500);
  letter-spacing: .02em; display: block; margin-bottom: 14px; }

/* ---------- 面包屑 ---------- */
.breadcrumb { font-size: 13px; color: var(--muted-2); padding: 14px 0; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.breadcrumb li::after { content: "/"; margin-left: 8px; color: var(--line); }
.breadcrumb li:last-child::after { content: ""; }
.breadcrumb a:hover { color: var(--green-600); }
.breadcrumb [aria-current] { color: var(--muted); }

/* ---------- 页面头部（内页） ---------- */
.page-hero {
  position: relative; background: linear-gradient(120deg, var(--forest-900), var(--forest-700) 60%, var(--forest-600));
  color: #fff; padding: 54px 0 46px; overflow: hidden;
}
.page-hero::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 340px; height: 340px;
  border-radius: 50%; background: radial-gradient(circle, rgba(62, 165, 95, .22), transparent 68%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; margin-bottom: 14px; }
.page-hero p { font-size: 15.5px; color: #B5D0BE; max-width: 780px; line-height: 1.85; }
.page-hero .breadcrumb { color: #7A9482; padding: 0 0 16px; }
.page-hero .breadcrumb a:hover { color: #fff; }
.page-hero .breadcrumb li::after { color: #436050; }
.page-hero .btn-ghost { margin-top: 20px; }

.kw-strip { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.kw-strip a { font-size: 12.5px; padding: 5px 13px; border-radius: 100px;
  background: rgba(255, 255, 255, .09); border: 1px solid rgba(255, 255, 255, .16); color: #CFE4D5; }
.kw-strip a:hover { background: rgba(126, 217, 87, .2); border-color: var(--lime-400); color: #fff; }

/* ---------- 数据表 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; }
table.data { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 560px; }
table.data thead th { background: var(--forest-700); color: #fff; text-align: left;
  padding: 14px 18px; font-weight: 600; white-space: nowrap; }
table.data td { padding: 13px 18px; border-bottom: 1px solid var(--line-2); vertical-align: top; }
table.data tbody tr:nth-child(even) { background: #F8FCF9; }
table.data tbody tr:hover { background: var(--green-100); }
table.data td.num { font-family: var(--font-num); font-weight: 700; color: var(--green-600); font-size: 16px; }

/* ---------- 规格表（产品参数） ---------- */
.spec-list { display: grid; gap: 0; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.spec-list li { display: grid; grid-template-columns: 130px 1fr; font-size: 14.5px;
  border-bottom: 1px solid var(--line-2); }
.spec-list li:last-child { border-bottom: 0; }
.spec-list li:nth-child(even) { background: #F8FCF9; }
.spec-list b { padding: 12px 16px; color: var(--muted); font-weight: 500; background: var(--mist); }
.spec-list span { padding: 12px 16px; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 10px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; transition: border-color .2s; }
.faq details[open] { border-color: var(--green-400); box-shadow: var(--shadow-sm); }
.faq summary {
  padding: 16px 46px 16px 20px; font-size: 15.5px; font-weight: 600; color: var(--ink);
  cursor: pointer; position: relative; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-size: 22px; color: var(--green-600); font-weight: 400; line-height: 1;
}
.faq details[open] summary::after { content: "−"; }
.faq .faq-a { padding: 0 20px 18px; font-size: 14.5px; color: var(--muted); line-height: 1.88; }

/* ---------- CTA 条 ---------- */
.cta-band {
  background: linear-gradient(115deg, var(--forest-900), var(--forest-700) 55%, var(--green-600));
  color: #fff; padding: 46px 0;
}
.cta-band .container { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: clamp(20px, 2.4vw, 27px); margin-bottom: 8px; }
.cta-band p { color: #ADC8B7; font-size: 15px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--forest-900); color: #91AE9C; font-size: 14px; padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 36px; }
@media (max-width: 980px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h4 { color: #fff; font-size: 15.5px; margin-bottom: 16px; }
.site-footer a:hover { color: var(--lime-400); }
.footer-about p { line-height: 1.9; font-size: 13.5px; margin-bottom: 16px; }
.footer-links li { margin-bottom: 9px; font-size: 13.5px; }
.footer-cities { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px 10px; }
.footer-cities a { font-size: 13px; }
.footer-contact li { font-size: 13.5px; margin-bottom: 12px; line-height: 1.7; }
.footer-contact b { color: var(--amber-500); font-family: var(--font-num); font-size: 19px; }
.footer-tags { border-top: 1px solid rgba(255, 255, 255, .08); margin-top: 40px; padding: 20px 0; font-size: 12.5px; line-height: 2; }
.footer-tags a { color: #7A9482; margin-right: 12px; }
.footer-tags a:hover { color: var(--lime-400); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 18px 0; font-size: 13px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-bottom .icp-link { color: inherit; text-decoration: none; border-bottom: 1px dotted rgba(255, 255, 255, .35); }
.footer-bottom .icp-link:hover { color: var(--lime-400); border-bottom-color: var(--lime-400); }

/* ---------- 悬浮咨询 ---------- */
.float-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 950; display: none;
  background: #fff; border-top: 1px solid var(--line); box-shadow: 0 -4px 20px rgba(8, 35, 23, .1);
  padding: 9px 12px; gap: 10px;
}
.float-bar a { flex: 1; text-align: center; padding: 11px 8px; border-radius: var(--radius);
  font-size: 14.5px; font-weight: 600; }
.float-bar .fb-tel { background: var(--green-600); color: #fff; }
.float-bar .fb-ask { background: var(--amber-500); color: #2A1B00; }
@media (max-width: 720px) { .float-bar { display: flex; } body { padding-bottom: 62px; } }

/* ---------- 工具类 ---------- */
.mt-0 { margin-top: 0 !important; } .mt-1 { margin-top: 12px; }
.mt-2 { margin-top: 24px; } .mt-3 { margin-top: 36px; }
.mb-2 { margin-bottom: 24px; } .mb-3 { margin-bottom: 36px; }
.text-center { text-align: center; }
.lead { font-size: 17px; line-height: 1.9; color: var(--forest-600); font-weight: 500; }
.note { background: var(--green-100); border-left: 3px solid var(--green-500); padding: 16px 20px;
  border-radius: 0 var(--radius) var(--radius) 0; font-size: 14.5px; color: var(--forest-700); margin: 22px 0; }
.note--amber { background: #FFF6E6; border-left-color: var(--amber-500); }

.chip-row { display: flex; flex-wrap: wrap; gap: 9px; }
.chip { padding: 7px 15px; background: #fff; border: 1px solid var(--line); border-radius: 100px;
  font-size: 13.5px; color: var(--muted); }
a.chip:hover { border-color: var(--green-400); color: var(--green-600); }
.chip--solid { background: var(--green-100); border-color: transparent; color: var(--green-600); font-weight: 500; }

/* 折叠城市分组 */
.city-block { margin-bottom: 30px; }
.city-block > h3 { font-size: 17px; margin-bottom: 14px; padding-left: 12px; border-left: 3px solid var(--amber-500); }

/* ---------- 案例卡（实拍配图 + 声源类型角标） ---------- */
.case-card { position: relative; }
.case-card .card-media { aspect-ratio: 8 / 5; }
.case-card .card-media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(5, 26, 16, .34) 0%, rgba(5, 26, 16, 0) 46%);
  pointer-events: none;
}
.case-card .case-badge {
  position: absolute; left: 12px; top: 12px; z-index: 2;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 13px; border-radius: 100px;
  font-size: 12.5px; font-weight: 600; color: #fff; background: var(--tint, #1C7A3E);
  box-shadow: 0 2px 12px rgba(8, 35, 23, .3);
}
.case-card .case-badge i { font-style: normal; opacity: .92; }
.case-card::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; z-index: 3;
  background: var(--tint, #1C7A3E);
  transform: scaleX(0); transform-origin: left; transition: transform .4s ease;
}
.case-card:hover::after { transform: scaleX(1); }
.case-card .case-meta {
  display: block; margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--line);
  font-size: 12.5px; color: var(--muted-2);
}

/* ---------- 实拍图注 ---------- */
.shot-note { font-size: 12.5px; color: var(--muted-2); margin-top: 10px; }

/* 打印 */
@media print {
  .site-header, .topbar, .float-bar, .cta-band, .site-footer { display: none; }
}