/* =========================================================
   AI水肥 · 企业官网样式表
   结构：1 变量 / 2 基础 / 3 按钮 / 4 头部导航 / 5 首屏
        6 数据 / 7 服务 / 8 流程 / 9 案例 / 10 关于
        11 联系 / 12 页脚 / 13 动效 / 14 响应式
   ========================================================= */

/* ===== 1. 设计变量 ===== */
:root {
  --green-950: #08261c;
  --green-900: #0b3226;
  --green-800: #0e3b2c;
  --green-700: #12513a;
  --green-600: #17795a;
  --green-500: #1f9d6f;
  --green-400: #3ecf8e;
  --green-300: #6ee7b7;
  --lime: #a3e635;

  --ink: #10231b;
  --ink-2: #33473d;
  --muted: #6b7f75;
  --line: #e3ebe6;
  --line-soft: #eef4f0;

  --bg: #ffffff;
  --bg-tint: #f6faf7;
  --bg-deep: #0b3226;

  --white: #ffffff;
  --shadow-sm: 0 2px 8px rgba(11, 50, 38, .06);
  --shadow-md: 0 10px 30px rgba(11, 50, 38, .08);
  --shadow-lg: 0 24px 60px rgba(11, 50, 38, .14);

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --header-h: 76px;
  --container: 1200px;
  --ease: cubic-bezier(.22, .61, .36, 1);

  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
          "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

/* ===== 2. 基础 ===== */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.25;
}

/* 中文标题避免末行只剩一两个字 */
h1, h2 { text-wrap: balance; }

p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--green-500);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  position: relative;
  padding: 110px 0;
}

.section-tint { background: var(--bg-tint); }

.section-head {
  max-width: 760px;
  margin: 0 auto 64px;
  text-align: center;
}

.section-head-left {
  margin-left: 0;
  text-align: left;
}

.section-head h2 {
  font-size: clamp(26px, 3.4vw, 42px);
  margin-bottom: 18px;
}

.section-desc {
  color: var(--muted);
  font-size: 16.5px;
  line-height: 1.85;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--green-300);
}

.eyebrow-dark { color: var(--green-600); }

.dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green-400);
  box-shadow: 0 0 0 4px rgba(74, 222, 128, .18);
}

.text-grad {
  background: linear-gradient(100deg, #6ee7b7 0%, #a3e635 55%, #34d399 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== 3. 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 52px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .01em;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
              background .25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-sm { height: 42px; padding: 0 20px; font-size: 14px; }
.btn-block { width: 100%; }

.btn-primary {
  background: linear-gradient(135deg, var(--green-500), var(--green-600));
  color: #fff;
  box-shadow: 0 8px 20px rgba(23, 121, 90, .26);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--green-400), var(--green-500));
  box-shadow: 0 14px 28px rgba(23, 121, 90, .32);
}

.btn-ghost {
  background: rgba(255, 255, 255, .07);
  border-color: rgba(255, 255, 255, .26);
  color: #fff;
  backdrop-filter: blur(6px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, .14);
  border-color: rgba(255, 255, 255, .45);
}

/* ===== 4. 头部导航 ===== */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  z-index: 120;
  background: linear-gradient(90deg, var(--green-400), var(--lime));
  transition: width .1s linear;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background .35s var(--ease), box-shadow .35s var(--ease),
              height .35s var(--ease);
}

/* 注意：这里不要使用 backdrop-filter。
   它会为 fixed 子元素创建包含块，导致移动端抽屉导航被压缩进头部高度。 */
.site-header.is-scrolled {
  height: 66px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 1px 0 var(--line), 0 8px 24px rgba(11, 50, 38, .06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .16);
  transition: background .3s var(--ease), border-color .3s var(--ease);
}

.is-scrolled .brand-mark {
  background: var(--green-800);
  border-color: var(--green-800);
}

.brand-text { display: flex; flex-direction: column; line-height: 1.15; }

.brand-text strong {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .04em;
  color: #fff;
  transition: color .3s var(--ease);
}

.brand-text em {
  font-style: normal;
  font-size: 8.5px;
  line-height: 1.4;
  margin-top: 2px;
  letter-spacing: .18em;
  color: rgba(255, 255, 255, .55);
  transition: color .3s var(--ease);
}

.is-scrolled .brand-text strong { color: var(--ink); }
.is-scrolled .brand-text em { color: var(--muted); }

.nav-list {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  position: relative;
  display: block;
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  font-size: 14.5px;
  font-weight: 500;
  color: rgba(255, 255, 255, .82);
  transition: color .22s var(--ease), background .22s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--green-400);
  transform: translateX(-50%);
  transition: width .28s var(--ease);
}

.nav-link:hover { color: #fff; }
.nav-link:hover::after { width: 16px; }

.is-scrolled .nav-link { color: var(--ink-2); }
.is-scrolled .nav-link:hover { color: var(--green-600); }

.nav-link.is-active {
  color: #fff;
  background: rgba(255, 255, 255, .1);
}
.nav-link.is-active::after { width: 16px; background: var(--green-300); }

.is-scrolled .nav-link.is-active {
  color: var(--green-600);
  background: rgba(31, 157, 111, .08);
}

.is-scrolled .nav-link.is-active::after { width: 0; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.menu-toggle {
  display: none;
  width: 44px; height: 44px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 12px;
  background: rgba(255, 255, 255, .06);
  position: relative;
  z-index: 120;
}

.menu-toggle span {
  position: absolute;
  left: 50%;
  width: 18px;
  height: 2px;
  margin-left: -9px;
  border-radius: 2px;
  background: #fff;
  transition: transform .3s var(--ease), opacity .2s var(--ease),
              background .3s var(--ease);
}

.menu-toggle span:nth-child(1) { top: 15px; }
.menu-toggle span:nth-child(2) { top: 21px; }
.menu-toggle span:nth-child(3) { top: 27px; }

.is-scrolled .menu-toggle {
  border-color: var(--line);
  background: #fff;
}
.is-scrolled .menu-toggle span { background: var(--ink); }

/* 抽屉展开时，关闭按钮必须始终可辨（可能覆盖在白色抽屉上） */
.menu-toggle.is-open {
  border-color: var(--line);
  background: #fff;
}
.menu-toggle.is-open span { background: var(--ink); }

.menu-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle.is-open span:nth-child(2) { opacity: 0; }
.menu-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ===== 5. 首屏 ===== */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 74px) 0 130px;
  background: radial-gradient(120% 100% at 15% 0%, #14513a 0%, #0d3b2c 42%, #08261c 100%);
  color: #fff;
  overflow: hidden;
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; }

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .5;
  animation: float 16s ease-in-out infinite;
}

.hero-orb-1 {
  width: 460px; height: 460px;
  top: -120px; right: -80px;
  background: radial-gradient(circle, rgba(62, 207, 142, .80), transparent 68%);
}

.hero-orb-2 {
  width: 380px; height: 380px;
  bottom: -140px; left: -60px;
  background: radial-gradient(circle, rgba(163, 230, 53, .45), transparent 68%);
  animation-delay: -7s;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 78% 62% at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 78% 62% at 50% 30%, #000 20%, transparent 78%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  align-items: center;
  gap: 64px;
}

.hero-copy h1 {
  font-size: clamp(32px, 4.4vw, 56px);
  line-height: 1.16;
  letter-spacing: -.03em;
  color: #fff;
  margin-bottom: 24px;
}

.hero-desc {
  max-width: 540px;
  color: rgba(255, 255, 255, .74);
  font-size: 16.5px;
  line-height: 1.9;
  margin-bottom: 34px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, .12);
}

.hero-tags li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .66);
}

.hero-tags li::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 10px; height: 10px;
  margin-top: -5px;
  border-radius: 50%;
  border: 1.5px solid var(--green-400);
}

/* 首屏玻璃看板 */
.hero-visual { position: relative; }

.glass-card {
  position: relative;
  padding: 22px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(8, 42, 32, .82), rgba(10, 48, 36, .62));
  border: 1px solid rgba(255, 255, 255, .16);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .32);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.glass-head {
  display: flex;
  align-items: center;
  gap: 9px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  font-size: 12.5px;
  color: rgba(255, 255, 255, .74);
}

.pulse {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green-400);
  animation: pulse 2s ease-out infinite;
}

.glass-time {
  margin-left: auto;
  font-variant-numeric: tabular-nums;
  color: rgba(255, 255, 255, .5);
}

.glass-body {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 22px 0;
}

.gauge { position: relative; flex-shrink: 0; }

.gauge-ring {
  animation: ring 2.4s var(--ease) forwards;
  transform-origin: 60px 60px;
}

.gauge-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.gauge-label strong {
  font-size: 25px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -.02em;
}

.gauge-label span {
  font-size: 10.5px;
  color: rgba(255, 255, 255, .55);
}

.glass-metrics {
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
  min-width: 0;
}

.metric {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 2px 10px;
  padding-bottom: 11px;
  border-bottom: 1px dashed rgba(255, 255, 255, .12);
}

.metric:last-child { border-bottom: 0; padding-bottom: 0; }

.metric-label { font-size: 11.5px; color: rgba(255, 255, 255, .5); }

.metric strong {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
  grid-row: span 2;
  align-self: center;
}

.metric strong em {
  font-style: normal;
  font-size: 10.5px;
  font-weight: 500;
  color: rgba(255, 255, 255, .5);
  margin-left: 2px;
}

.metric-state {
  font-size: 10.5px;
  color: rgba(255, 255, 255, .42);
  text-align: right;
}

.metric-state.ok { color: var(--green-300); }

.glass-foot {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: rgba(255, 255, 255, .5);
}

.bar-row span { width: 14px; flex-shrink: 0; }

.bar-row i {
  position: relative;
  flex: 1;
  height: 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, .12);
  overflow: hidden;
}

.bar-row i::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--w, 50%);
  border-radius: 4px;
  background: linear-gradient(90deg, var(--green-400), var(--lime));
  animation: barGrow 1.6s var(--ease) both;
}

.float-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .95);
  color: var(--green-700);
  font-size: 12.5px;
  font-weight: 600;
  box-shadow: 0 12px 30px rgba(0, 0, 0, .22);
  animation: floatY 5s ease-in-out infinite;
}

.float-chip svg { color: var(--green-600); }

.float-chip-a { top: -18px; left: -26px; }
.float-chip-b { bottom: -18px; right: -10px; animation-delay: -2.4s; }

.hero-wave {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  line-height: 0;
}

.hero-wave svg { width: 100%; height: 90px; }

/* ===== 6. 数据指标 ===== */
.stats {
  padding: 10px 0 76px;
  background: var(--bg-tint);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat {
  padding: 30px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  text-align: center;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease),
              border-color .3s var(--ease);
}

.stat:hover {
  transform: translateY(-4px);
  border-color: rgba(31, 157, 111, .3);
  box-shadow: var(--shadow-md);
}

.stat-num {
  display: block;
  font-size: clamp(30px, 3.2vw, 40px);
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--green-600);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat span {
  font-size: 13.5px;
  color: var(--muted);
}

/* ===== 7. 服务板块 ===== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.service-card {
  position: relative;
  padding: 34px 30px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease),
              border-color .35s var(--ease);
}

.service-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green-500), var(--lime));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s var(--ease);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(31, 157, 111, .26);
  box-shadow: var(--shadow-lg);
}

.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  display: grid;
  place-items: center;
  width: 52px; height: 52px;
  margin-bottom: 22px;
  border-radius: 14px;
  background: linear-gradient(140deg, rgba(31, 157, 111, .12), rgba(163, 230, 53, .16));
  color: var(--green-600);
  transition: background .35s var(--ease), color .35s var(--ease),
              transform .35s var(--ease);
}

.service-icon svg { width: 24px; height: 24px; }

.service-card:hover .service-icon {
  background: linear-gradient(140deg, var(--green-500), var(--green-600));
  color: #fff;
  transform: scale(1.05) rotate(-3deg);
}

.service-card h3 {
  font-size: 18.5px;
  margin-bottom: 12px;
}

.service-card p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 18px;
}

.service-points {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.service-points li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  color: var(--ink-2);
}

.service-points li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 8px; height: 8px;
  border-radius: 2px;
  border: 1.5px solid var(--green-400);
  transform: rotate(45deg);
}

.service-index {
  position: absolute;
  top: 22px; right: 26px;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -.04em;
  color: var(--line-soft);
  transition: color .35s var(--ease);
  pointer-events: none;
}

.service-card:hover .service-index { color: rgba(31, 157, 111, .12); }

/* ===== 8. 交付流程 ===== */
.process {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
  margin-bottom: 56px;
}

.process-line {
  position: absolute;
  top: 23px;
  left: 2px;
  right: 21.4%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px);
  z-index: 0;
}

.process-step {
  position: relative;
  z-index: 1;
  padding-right: 12px;
}

.step-dot {
  display: grid;
  place-items: center;
  width: 47px; height: 47px;
  margin-bottom: 22px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--green-400);
  color: var(--green-600);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .02em;
  box-shadow: 0 0 0 6px var(--bg-tint);
  transition: background .3s var(--ease), color .3s var(--ease),
              transform .3s var(--ease);
}

.process-step:hover .step-dot {
  background: var(--green-600);
  border-color: var(--green-600);
  color: #fff;
  transform: translateY(-3px);
}

.process-step h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.process-step p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 14px;
}

.step-out {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(31, 157, 111, .08);
  border: 1px solid rgba(31, 157, 111, .16);
  font-size: 12px;
  color: var(--green-600);
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 8px;
}

.advantage {
  padding: 26px 28px;
  border-left: 3px solid var(--green-400);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.advantage strong {
  display: block;
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 6px;
}

.advantage p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ===== 9. 案例 ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.case-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.case-visual {
  position: relative;
  height: 178px;
  background: linear-gradient(135deg, var(--green-700), var(--green-500));
  overflow: hidden;
}

.case-visual svg { width: 100%; height: 100%; }

.case-visual-2 { background: linear-gradient(135deg, #0f4c5c, #1f9d9d); }
.case-visual-3 { background: linear-gradient(135deg, #1f6b3a, #7cb342); }

.case-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(80% 80% at 80% 0%, rgba(255, 255, 255, .22), transparent 60%);
}

.case-tag {
  position: absolute;
  top: 16px; left: 16px;
  z-index: 2;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .92);
  color: var(--green-700);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .04em;
}

.case-body { padding: 26px 26px 28px; }

.case-body h3 {
  font-size: 17px;
  line-height: 1.5;
  margin-bottom: 10px;
}

.case-body p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 18px;
}

.case-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.case-metrics span {
  padding: 5px 11px;
  border-radius: 8px;
  background: var(--bg-tint);
  border: 1px solid var(--line);
  font-size: 12px;
  color: var(--green-700);
}

.case-metrics b { font-weight: 700; }

/* ===== 10. 关于我们 ===== */
.section-dark {
  background:
    radial-gradient(90% 70% at 85% 10%, rgba(31, 157, 111, .28), transparent 60%),
    radial-gradient(70% 60% at 5% 90%, rgba(163, 230, 53, .12), transparent 60%),
    var(--bg-deep);
  color: rgba(255, 255, 255, .72);
  overflow: hidden;
}

.about-inner {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  gap: 70px;
  align-items: center;
}

.about-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .12);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .35);
}

.about-frame svg { width: 100%; height: auto; }

.about-badge {
  position: absolute;
  right: 22px; bottom: 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 108px; height: 108px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .95);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .25);
  color: var(--green-800);
}

.about-badge strong {
  font-size: 32px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.03em;
}

.about-badge span {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}

.about-copy h2 {
  color: #fff;
  font-size: clamp(26px, 3.2vw, 40px);
  margin-bottom: 22px;
}

.about-p {
  font-size: 15.5px;
  line-height: 1.95;
  color: rgba(255, 255, 255, .68);
  margin-bottom: 16px;
}

.about-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, .12);
}

.fact strong {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -.02em;
  margin-bottom: 4px;
}

.fact span {
  font-size: 12px;
  color: rgba(255, 255, 255, .5);
  line-height: 1.5;
}

/* ===== 11. 联系我们 ===== */
.contact-wrap {
  display: grid;
  grid-template-columns: minmax(0, .84fr) minmax(0, 1.16fr);
  gap: 34px;
  align-items: start;
}

.contact-info {
  padding: 34px;
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, #0e3b2c, #12513a 60%, #14624a);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.info-block {
  display: flex;
  gap: 15px;
  padding-bottom: 22px;
  margin-bottom: 22px;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}

.info-block:last-of-type { border-bottom: 0; margin-bottom: 0; }

.info-icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 42px; height: 42px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .14);
  color: var(--green-300);
}

.info-icon svg { width: 20px; height: 20px; }

.info-block h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .48);
  margin-bottom: 6px;
}

.info-block p {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  line-height: 1.55;
  margin-bottom: 3px;
}

.info-block p a { transition: color .22s var(--ease); }
.info-block p a:hover { color: var(--green-300); }

.info-hint {
  font-size: 12px;
  color: rgba(255, 255, 255, .48);
}

.contact-note {
  margin-top: 26px;
  padding: 18px 20px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .07);
  border: 1px dashed rgba(255, 255, 255, .2);
}

.contact-note strong {
  display: block;
  font-size: 13.5px;
  color: var(--green-300);
  margin-bottom: 5px;
}

.contact-note p {
  font-size: 12.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .6);
}

.contact-form-wrap {
  padding: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.field { margin-bottom: 18px; }

.field label {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
}

.field label i {
  font-style: normal;
  color: #e0533d;
  margin-left: 2px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 15px;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--ink);
  background: #fbfdfc;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease),
              background .22s var(--ease);
  appearance: none;
}

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236b7f75' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 38px;
  cursor: pointer;
}

.field textarea { resize: vertical; min-height: 108px; line-height: 1.7; }

.field input::placeholder,
.field textarea::placeholder { color: #a4b3ab; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--green-400);
  box-shadow: 0 0 0 4px rgba(62, 207, 142, .13);
}

.field input.is-invalid,
.field textarea.is-invalid {
  border-color: #e0533d;
  box-shadow: 0 0 0 4px rgba(224, 83, 61, .1);
}

.field-error {
  display: block;
  min-height: 0;
  margin-top: 5px;
  font-size: 12px;
  color: #d0442c;
}

.field-error:empty { display: none; }

.field-error-block { margin: -6px 0 14px; }

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
  cursor: pointer;
  margin-bottom: 6px;
}

.checkbox input {
  appearance: none;
  flex-shrink: 0;
  width: 17px; height: 17px;
  margin-top: 2px;
  border: 1.5px solid #cbd8d1;
  border-radius: 5px;
  background: #fff;
  transition: background .2s var(--ease), border-color .2s var(--ease);
  cursor: pointer;
}

.checkbox input:checked {
  background: var(--green-500) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 13 4 4L19 7'/%3E%3C/svg%3E") center/12px no-repeat;
  border-color: var(--green-500);
}

.contact-form .btn { margin-top: 6px; }

.btn-loading {
  display: none;
  width: 17px; height: 17px;
  border: 2px solid rgba(255, 255, 255, .4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

.btn.is-loading .btn-loading { display: block; }
.btn.is-loading .btn-text { opacity: .75; }
.btn.is-loading { pointer-events: none; }

.form-tip {
  margin-top: 12px;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

.form-success {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: var(--radius);
  background: rgba(31, 157, 111, .08);
  border: 1px solid rgba(31, 157, 111, .22);
  color: var(--green-700);
  animation: fadeUp .45s var(--ease) both;
}

.form-success[hidden] { display: none; }

.form-error {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: var(--radius);
  background: rgba(224, 83, 61, .07);
  border: 1px solid rgba(224, 83, 61, .24);
  color: #b83c26;
  animation: fadeUp .45s var(--ease) both;
}

.form-error[hidden] { display: none; }

.form-error svg { flex-shrink: 0; margin-top: 2px; }

.form-error strong {
  display: block;
  font-size: 14px;
  margin-bottom: 3px;
}

.form-error p {
  font-size: 12.5px;
  line-height: 1.7;
  color: #7c5148;
}

.form-success svg { flex-shrink: 0; margin-top: 2px; }

.form-success strong {
  display: block;
  font-size: 14px;
  margin-bottom: 3px;
}

.form-success p {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ===== 12. 页脚 ===== */
.site-footer {
  background: var(--green-950);
  color: rgba(255, 255, 255, .6);
  padding: 70px 0 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 44px;
  padding-bottom: 46px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.brand-footer .brand-mark {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .12);
  width: 38px; height: 38px;
}

.brand-footer .brand-text strong { color: #fff; font-size: 17px; }
.brand-footer .brand-text em { color: rgba(255, 255, 255, .45); }

.footer-desc {
  max-width: 300px;
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .52);
}

.footer-links h5 {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--green-300);
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 10px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .55);
  line-height: 1.6;
}

.footer-links a { transition: color .2s var(--ease); }
.footer-links a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 24px;
  font-size: 12px;
  color: rgba(255, 255, 255, .4);
}

/* 备案号链接 */
.footer-bottom a {
  color: rgba(255, 255, 255, .55);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, .18);
  transition: color .2s ease, border-color .2s ease;
}

.footer-bottom a:hover,
.footer-bottom a:focus-visible {
  color: #a3e635;
  border-bottom-color: rgba(163, 230, 53, .5);
}

/* 返回顶部 */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  color: var(--green-600);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .3s var(--ease), transform .3s var(--ease),
              visibility .3s var(--ease), background .25s var(--ease),
              color .25s var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover {
  background: var(--green-600);
  color: #fff;
  border-color: var(--green-600);
}

/* ===== 13. 动效 ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-18px, 22px) scale(1.06); }
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, .55); }
  70% { box-shadow: 0 0 0 9px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

@keyframes ring {
  from { stroke-dashoffset: 314; }
  to { stroke-dashoffset: 78; }
}

@keyframes barGrow {
  from { width: 0; }
}

@keyframes spin { to { transform: rotate(360deg); } }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ===== 14. 响应式 ===== */

/* 平板横屏 */
@media (max-width: 1080px) {
  .hero-inner { gap: 40px; }
  .hero-copy h1 { font-size: 40px; }
  .float-chip-a { left: -12px; }
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-inner { gap: 44px; }
  .process { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px 26px; }
  .process-line { display: none; }
  .footer-top { grid-template-columns: 1fr 1fr 1fr; gap: 34px; }
  .footer-brand { grid-column: 1 / -1; }
}

/* 平板竖屏 / 手机横屏 */
@media (max-width: 900px) {
  :root { --header-h: 68px; }

  .section { padding: 78px 0; }
  .section-head { margin-bottom: 44px; }

  /* 移动端导航抽屉 */
  .menu-toggle { display: block; }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(84vw, 340px);
    padding: calc(var(--header-h) + 22px) 26px 40px;
    background: #fff;
    box-shadow: -14px 0 40px rgba(11, 50, 38, .16);
    transform: translateX(102%);
    transition: transform .38s var(--ease);
    overflow-y: auto;
    z-index: 99;
  }

  .nav.is-open { transform: translateX(0); }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    padding: 15px 14px;
    font-size: 15.5px;
    color: var(--ink-2);
    border-radius: var(--radius-sm);
    border-bottom: 1px solid var(--line-soft);
  }

  .nav-link::after { display: none; }

  .nav-link.is-active {
    color: var(--green-600);
    background: rgba(31, 157, 111, .08);
  }

  .nav.is-open .nav-link { color: var(--ink-2); }
  .nav.is-open .nav-link.is-active { color: var(--green-600); }

  .header-cta { display: none; }

  .hero { padding: calc(var(--header-h) + 48px) 0 96px; }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-copy h1 { font-size: clamp(30px, 6.4vw, 40px); }
  .hero-desc { font-size: 15.5px; }
  .hero-visual { max-width: 480px; width: 100%; margin-inline: auto; }

  .float-chip-a { top: -14px; left: 0; }
  .float-chip-b { bottom: -14px; right: 0; }

  .stats { padding-bottom: 56px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .stat { padding: 24px 16px; }

  .about-inner { grid-template-columns: 1fr; gap: 38px; }
  .about-visual { max-width: 460px; }
  .about-copy { order: 2; }

  .contact-wrap { grid-template-columns: 1fr; gap: 24px; }
  .contact-form-wrap { padding: 28px; }

  /* 遮罩 */
  .nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: 98;
    background: rgba(8, 38, 28, .45);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s var(--ease), visibility .3s var(--ease);
  }

  .nav-backdrop.is-open { opacity: 1; visibility: visible; }

  body.nav-locked { overflow: hidden; }
}

/* 手机 */
@media (max-width: 620px) {
  .container { padding-inline: 18px; }
  .section { padding: 64px 0; }

  .hero { padding: calc(var(--header-h) + 40px) 0 84px; }
  .hero-copy h1 { font-size: 30px; line-height: 1.24; }
  .hero-desc { font-size: 15px; margin-bottom: 28px; }
  .hero-cta { gap: 10px; }
  .hero-cta .btn { flex: 1 1 100%; }
  .hero-tags { gap: 10px 18px; padding-top: 20px; }
  .hero-tags li { font-size: 12.5px; }

  .glass-card { padding: 18px; }
  .glass-body { flex-direction: column; gap: 16px; align-items: stretch; }
  .gauge { align-self: center; }
  .float-chip { font-size: 11.5px; padding: 8px 13px; }

  .stats-grid { gap: 12px; }
  .stat-num { font-size: 28px; }
  .stat span { font-size: 12.5px; }

  .service-grid { grid-template-columns: 1fr; gap: 16px; }
  .service-card { padding: 28px 24px 26px; }
  .service-index { font-size: 28px; top: 18px; right: 20px; }

  .process { grid-template-columns: 1fr; gap: 28px; }
  .process-step { padding-right: 0; padding-left: 62px; }
  .step-dot { position: absolute; left: 0; top: 0; margin-bottom: 0; }
  .process-step h3 { margin-top: 4px; }

  .advantage-grid { grid-template-columns: 1fr; }

  .case-grid { grid-template-columns: 1fr; gap: 18px; }
  .case-visual { height: 150px; }

  .about-facts { grid-template-columns: repeat(2, 1fr); gap: 20px; }

  .contact-info { padding: 26px 22px; }
  .contact-form-wrap { padding: 22px 18px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }

  .footer-top { grid-template-columns: 1fr 1fr; gap: 30px 22px; padding-bottom: 34px; }
  .site-footer { padding-top: 52px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }

  .to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
}

@media (max-width: 380px) {
  .hero-copy h1 { font-size: 26px; }
  .brand-text em { display: none; }
  .footer-top { grid-template-columns: 1fr; }
}

/* 打印 */
@media print {
  .site-header, .to-top, .hero-bg, .hero-wave, .float-chip { display: none !important; }
  body { color: #000; }
  .section { padding: 24px 0; page-break-inside: avoid; }
}

/* =========================================================
   15. 多页面组件
   内页头图 / 服务概览 / 案例列表 / 方案档位 / FAQ / CTA
   ========================================================= */

/* --- 内页头图 --- */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 66px) 0 78px;
  background: radial-gradient(120% 120% at 14% 0%, #14513a 0%, #0d3b2c 46%, #08261c 100%);
  color: #fff;
  overflow: hidden;
}

.page-hero-inner { position: relative; z-index: 2; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 26px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .5);
}

.breadcrumb a { transition: color .2s var(--ease); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { font-style: normal; opacity: .45; }
.breadcrumb em { font-style: normal; color: var(--green-300); }

.page-hero h1 {
  color: #fff;
  font-size: clamp(28px, 3.4vw, 44px);
  letter-spacing: -.03em;
  margin-bottom: 20px;
}

.page-hero-desc {
  max-width: 640px;
  color: rgba(255, 255, 255, .72);
  font-size: 15.5px;
  line-height: 1.9;
}

.page-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 56px;
  margin-top: 38px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, .13);
}

.page-hero-meta strong {
  display: block;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--green-300);
  line-height: 1.2;
  margin-bottom: 4px;
}

.page-hero-meta span { font-size: 12.5px; color: rgba(255, 255, 255, .5); }

/* --- 首页服务概览 --- */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.overview-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease),
              border-color .3s var(--ease);
}

.overview-card:hover {
  transform: translateY(-4px);
  border-color: rgba(31, 157, 111, .32);
  box-shadow: var(--shadow-md);
}

.overview-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 13px;
  background: rgba(31, 157, 111, .1);
  color: var(--green-600);
  transition: background .3s var(--ease), color .3s var(--ease);
}

.overview-icon svg { width: 23px; height: 23px; }

.overview-card:hover .overview-icon {
  background: var(--green-600);
  color: #fff;
}

.overview-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
}

.overview-card p {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
  margin-bottom: 18px;
}

.overview-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--green-600);
}

.overview-more svg { transition: transform .25s var(--ease); }
.overview-card:hover .overview-more svg { transform: translateX(4px); }

/* --- 首页案例列表 --- */
.case-strip { display: grid; gap: 12px; }

.strip-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 26px;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease),
              border-color .3s var(--ease);
}

.strip-item:hover {
  transform: translateX(4px);
  border-color: rgba(31, 157, 111, .3);
  box-shadow: var(--shadow-sm);
}

.strip-tag {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--green-600);
  text-transform: uppercase;
}

.strip-copy h3 {
  font-size: 17.5px;
  margin: 8px 0 8px;
}

.strip-copy p {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 620px;
}

.strip-metrics {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.strip-metrics span {
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  background: rgba(31, 157, 111, .08);
  color: var(--green-700);
  font-size: 12.5px;
  font-weight: 700;
  white-space: nowrap;
}

/* --- 方案档位 --- */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
}

.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 34px 28px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease),
              border-color .3s var(--ease);
}

.plan:hover {
  transform: translateY(-5px);
  border-color: rgba(31, 157, 111, .32);
  box-shadow: var(--shadow-md);
}

.plan-featured {
  border-color: rgba(31, 157, 111, .45);
  background: linear-gradient(180deg, #f4fbf7, #ffffff 55%);
  box-shadow: var(--shadow-md);
}

.plan-badge {
  position: absolute;
  top: -13px;
  left: 28px;
  padding: 4px 13px;
  border-radius: var(--radius-pill);
  background: var(--green-600);
  color: #fff;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .06em;
}

.plan h3 { font-size: 20px; margin-bottom: 8px; }

.plan-fit {
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
  margin-bottom: 20px;
}

.plan-price {
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px dashed var(--line);
  font-size: 17px;
  font-weight: 800;
  color: var(--green-600);
}

.plan-price span {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
}

.plan-list { display: grid; gap: 11px; }

.plan-list li {
  position: relative;
  padding-left: 24px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-2);
}

.plan-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 6px;
  width: 11px;
  height: 6px;
  border-left: 2px solid var(--green-500);
  border-bottom: 2px solid var(--green-500);
  transform: rotate(-45deg);
}

/* --- FAQ --- */
.faq {
  display: grid;
  gap: 12px;
  max-width: 840px;
  margin-inline: auto;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 0 24px;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.faq details[open] {
  border-color: rgba(31, 157, 111, .3);
  box-shadow: var(--shadow-sm);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "+";
  flex-shrink: 0;
  font-size: 20px;
  font-weight: 400;
  color: var(--green-600);
  transition: transform .25s var(--ease);
}

.faq details[open] summary::after { content: "−"; }

.faq p {
  padding-bottom: 22px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--muted);
}

/* --- CTA 横幅 --- */
.cta-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 36px;
  padding: 52px 56px;
  border-radius: var(--radius-lg);
  background: radial-gradient(110% 130% at 8% 0%, #14513a 0%, #0d3b2c 48%, #08261c 100%);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-card::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -110px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(62, 207, 142, .55), transparent 68%);
  filter: blur(46px);
  pointer-events: none;
}

.cta-eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--green-300);
}

.cta-card h2 {
  color: #fff;
  font-size: clamp(21px, 2.5vw, 29px);
  margin-bottom: 14px;
}

.cta-card p {
  max-width: 620px;
  color: rgba(255, 255, 255, .68);
  font-size: 14px;
  line-height: 1.85;
}

.cta-actions {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn-light {
  background: #fff;
  color: var(--green-700);
  box-shadow: 0 10px 24px rgba(4, 22, 16, .28);
}

.btn-light:hover { background: var(--green-300); color: var(--green-900); }

.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, .32);
  color: #fff;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, .12);
  border-color: rgba(255, 255, 255, .55);
}

/* 内页按钮点击态不受 .btn:hover 位移影响（深色区域内保持稳定） */
.cta-actions .btn { width: 100%; }

/* --- 多页面响应式 --- */
@media (max-width: 1080px) {
  .overview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plan-grid { grid-template-columns: 1fr; }
  .page-hero-meta { gap: 16px 40px; }
  .cta-card { padding: 42px 38px; }
}

@media (max-width: 900px) {
  .page-hero { padding: calc(var(--header-h) + 44px) 0 58px; }
  .page-hero h1 { font-size: clamp(26px, 5.6vw, 34px); }
  .page-hero-desc { font-size: 14.5px; }
  .page-hero-meta { margin-top: 30px; padding-top: 22px; gap: 14px 34px; }
  .page-hero-meta strong { font-size: 19px; }

  .strip-item { grid-template-columns: 1fr; gap: 16px; padding: 22px; }
  .strip-metrics { justify-content: flex-start; }
  .strip-item:hover { transform: none; }

  .cta-card { grid-template-columns: 1fr; gap: 26px; padding: 36px 28px; }
  .cta-actions { flex-direction: row; flex-wrap: wrap; }
  .cta-actions .btn { width: auto; flex: 1 1 200px; }
}

@media (max-width: 620px) {
  .overview-grid { grid-template-columns: 1fr; gap: 14px; }
  .overview-card { padding: 24px 22px; }
  .plan { padding: 28px 22px 26px; }
  .faq details { padding: 0 18px; }
  .faq summary { font-size: 14px; padding: 17px 0; }
  .cta-card { padding: 30px 22px; }
  .cta-actions .btn { flex: 1 1 100%; }
  .page-hero-meta { gap: 12px 26px; }
}

/* =========================================================
   16. 监控中心（monitor.html）
   看板容器 / 指标卡 / 曲线面板 / 告警列表
   ========================================================= */

.mon-board {
  position: relative;
  padding: 24px 26px 26px;
  border-radius: var(--radius-lg);
  background: radial-gradient(120% 130% at 6% 0%, #14513a 0%, #0d3b2c 48%, #08261c 100%);
  box-shadow: var(--shadow-lg);
  color: #eaf5ef;
  overflow: hidden;
}

.mon-board::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -140px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(62, 207, 142, .38), transparent 68%);
  filter: blur(52px);
  pointer-events: none;
}

.mon-board-head {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-bottom: 18px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .58);
}

.mon-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(74, 222, 128, .14);
  color: #a7f3d0;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .05em;
}

.mon-live i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 0 rgba(74, 222, 128, .6);
  animation: monPulse 2s infinite;
}

@keyframes monPulse {
  0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, .55); }
  70% { box-shadow: 0 0 0 7px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

.mon-zone { color: #fff; font-weight: 600; }

.mon-clock {
  margin-left: auto;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 13px;
  color: #a7f3d0;
}

.mon-kpis {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}

.mon-kpi {
  padding: 15px 16px 14px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 14px;
  background: rgba(255, 255, 255, .055);
}

.mon-kpi .k { font-size: 12px; color: rgba(255, 255, 255, .55); margin-bottom: 8px; }

.mon-kpi .v {
  display: flex;
  align-items: baseline;
  gap: 3px;
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: #fff;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.mon-kpi .v em {
  font-style: normal;
  font-size: 11.5px;
  font-weight: 600;
  color: rgba(255, 255, 255, .48);
}

.mon-kpi .r { margin-top: 8px; font-size: 11.5px; color: rgba(255, 255, 255, .45); }
.mon-kpi .r.is-ok { color: #6ee7b7; }
.mon-kpi .r.is-warn { color: #fbbf24; }

.mon-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 12px;
}

.mon-panel {
  padding: 16px 18px 14px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 14px;
  background: rgba(255, 255, 255, .04);
}

.mon-panel h4 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 12.5px;
  font-weight: 600;
  color: rgba(255, 255, 255, .72);
}

.mon-panel h4 span { font-size: 11.5px; font-weight: 500; color: rgba(255, 255, 255, .38); }

.mon-chart { display: block; width: 100%; height: auto; }

.mon-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 8px;
  font-size: 11.5px;
  color: rgba(255, 255, 255, .45);
}

.mon-legend i {
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 6px;
  border-radius: 2px;
  vertical-align: middle;
}

.mon-legend .is-line { background: #4ade80; }
.mon-legend .is-irr { background: rgba(56, 189, 248, .55); }
.mon-legend .is-ban { background: rgba(74, 222, 128, .18); }

.mon-alert {
  display: grid;
  grid-template-columns: 8px minmax(0, 1fr) auto;
  align-items: start;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, .1);
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(255, 255, 255, .76);
}

.mon-alert:last-of-type { border-bottom: 0; }

.mon-alert time {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 11.5px;
  color: rgba(255, 255, 255, .38);
  white-space: nowrap;
}

.mon-dot {
  width: 8px;
  height: 8px;
  margin-top: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .3);
}

.mon-dot.is-ok { background: #4ade80; }
.mon-dot.is-warn { background: #fbbf24; }
.mon-dot.is-bad { background: #f87171; }

.mon-note {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, .09);
  font-size: 11.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .42);
}

@media (max-width: 1080px) {
  .mon-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mon-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .mon-board { padding: 20px 18px 22px; }
  .mon-clock { margin-left: 0; }
}

@media (max-width: 620px) {
  .mon-board { padding: 18px 14px 18px; }
  .mon-kpi { padding: 13px 14px 12px; }
  .mon-kpi .v { font-size: 22px; }
  .mon-panel { padding: 14px 14px 12px; }
}

/* 四列能力卡（监控中心） */
.overview-grid.is-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 1200px) {
  .overview-grid.is-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .overview-grid.is-4 { grid-template-columns: 1fr; }
}