/* ============================================================
   遇见AI助手 · 薄荷绿科技风营销单页样式
   ============================================================ */

:root {
  --mint-50: #EFFDF8;
  --mint-100: #D6F8EE;
  --mint-200: #AEF0DE;
  --mint-300: #74E5CA;
  --mint-400: #3AD6B4;
  --mint-500: #12C5A0;
  --mint-600: #00A986;
  --mint-700: #04876E;
  --deep-950: #04231E;
  --deep-900: #062B25;
  --deep-800: #0A3B33;
  --ink: #0F2E2A;
  --slate: #54716C;
  --line: #DCEBE7;
  --white: #FFFFFF;
  --gradient: linear-gradient(135deg, #14D3AC 0%, #00A986 100%);
  --gradient-deep: linear-gradient(135deg, #0A3B33 0%, #062B25 100%);
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 10px 30px rgba(6, 89, 74, .08);
  --shadow-lg: 0 24px 60px rgba(6, 89, 74, .16);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Bahnschrift", "Segoe UI", var(--font);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 93px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

img, svg { vertical-align: middle; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; font-size: 15px; }

.container {
  width: min(1200px, 100% - 48px);
  margin: 0 auto;
}

.i { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: all .3s ease;
  white-space: nowrap;
}
.btn .i { font-size: 16px; }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 8px 22px rgba(0, 169, 134, .35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0, 169, 134, .45); }
.btn-ghost {
  background: #fff;
  color: var(--deep-800);
  border: 1.5px solid var(--mint-200);
}
.btn-ghost:hover { border-color: var(--mint-500); color: var(--mint-600); transform: translateY(-2px); }

/* ---------------- 通用区块 ---------------- */
.section { padding: 90px 0; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 54px; }
.section-title { font-size: 34px; font-weight: 800; line-height: 1.35; letter-spacing: .5px; }
.section-subtitle { margin-top: 14px; color: var(--slate); font-size: 16.5px; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: all .3s ease;
}
.site-header.scrolled { background: rgba(255, 255, 255, .96); box-shadow: 0 6px 24px rgba(6, 89, 74, .08); border-color: var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 8px 0; }

.logo { display: inline-flex; align-items: center; gap: 10px; }
.logo-icon { width: 34px; height: 34px; color: var(--mint-600); }
.logo-img { width: 141px; height: 65px; max-width: 100%; object-fit: contain; border-radius: 8px; display: block; }
.logo-text { font-size: 21px; font-weight: 800; letter-spacing: 1px; color: var(--deep-900); }
.logo-sub { font-size: 11px; color: var(--mint-600); font-weight: 600; border: 1px solid var(--mint-200); background: var(--mint-50); padding: 2px 8px; border-radius: 999px; letter-spacing: .5px; }

.main-nav .nav-list { display: flex; gap: 4px; }
.nav-link { display: block; padding: 8px 14px; font-size: 15px; font-weight: 500; color: var(--ink); border-radius: 999px; transition: all .25s ease; }
.nav-link:hover { color: var(--mint-600); background: var(--mint-50); }
.nav-link.active { color: var(--mint-600); background: var(--mint-100); font-weight: 600; }

.header-actions { display: flex; align-items: center; gap: 12px; }
.header-tel {
  display: inline-flex; align-items: center; gap: 7px;
  color: var(--deep-900); font-weight: 800; font-size: 16px;
  padding: 8px 16px; border-radius: 999px;
  border: 1.5px solid var(--mint-200); background: var(--mint-50);
  transition: all .25s ease;
}
.header-tel:hover { border-color: var(--mint-500); color: var(--mint-600); }
.header-tel .i { color: var(--mint-600); }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; border: 1px solid var(--line); align-items: center; justify-content: center; font-size: 24px; color: var(--deep-900); }

/* ---------------- Hero 首屏 ---------------- */
.hero { position: relative; background: linear-gradient(160deg, #EAFCF6 0%, #D8F8EE 45%, #F3FDF9 100%); overflow: hidden; }

/* Hero 轮播 */
.hero-carousel { position: relative; }
.hero-track { display: flex; transition: transform .65s cubic-bezier(.22, .61, .36, 1); }
.hero-slide { flex: 0 0 100%; min-width: 100%; padding: 121px 0 60px; }
.car-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 6;
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255, 255, 255, .85); border: 1px solid var(--mint-200);
  color: var(--mint-700); display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 20px; box-shadow: var(--shadow-sm);
  backdrop-filter: blur(6px); transition: all .25s ease;
}
.car-arrow:hover { background: var(--mint-500); border-color: var(--mint-500); color: #fff; }
.car-prev { left: 18px; }
.car-next { right: 18px; }
.car-dots {
  position: absolute; left: 50%; transform: translateX(-50%); bottom: 46px;
  display: flex; gap: 10px; z-index: 6;
}
.car-dot {
  width: 9px; height: 9px; border-radius: 999px; border: none; padding: 0;
  background: rgba(6, 89, 74, .22); cursor: pointer; transition: all .3s ease;
}
.car-dot:hover { background: rgba(6, 89, 74, .45); }
.car-dot.active { width: 26px; background: var(--mint-500); }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.grid-line {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(18, 197, 160, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 197, 160, .07) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 65% at 50% 40%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 65% at 50% 40%, #000 40%, transparent 100%);
}
.blob { position: absolute; border-radius: 50%; filter: blur(10px); }
.blob-1 { width: 480px; height: 480px; top: -140px; right: -120px; background: radial-gradient(circle, rgba(116, 229, 202, .55), transparent 65%); }
.blob-2 { width: 420px; height: 420px; bottom: -160px; left: -140px; background: radial-gradient(circle, rgba(58, 214, 180, .4), transparent 65%); }
.blob-3 { width: 260px; height: 260px; top: 40%; left: 46%; background: radial-gradient(circle, rgba(174, 240, 222, .65), transparent 70%); }

.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(255, 255, 255, .8); border: 1px solid var(--mint-200);
  color: var(--mint-700); font-size: 12.5px; font-weight: 600;
  padding: 6px 14px; border-radius: 999px; margin-bottom: 16px;
  backdrop-filter: blur(6px);
}
.hero-badge .i { color: var(--mint-500); }

.hero-title { font-size: 38px; line-height: 1.3; font-weight: 900; color: var(--deep-950); letter-spacing: 1px; }
.hero-title em { font-style: normal; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-subtitle { margin-top: 16px; font-size: 15.5px; color: var(--slate); max-width: 520px; }

.hero-cta { display: flex; gap: 14px; margin-top: 24px; flex-wrap: wrap; }

.hero-trust { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 22px; }
.hero-trust li { display: inline-flex; align-items: center; gap: 7px; font-size: 13.5px; color: var(--deep-800); font-weight: 500; }
.hero-trust .i { color: var(--mint-600); font-size: 15px; }
.hero-trust .check { stroke-width: 2.4; }

/* Hero 右侧产品模拟卡 */
.hero-visual { position: relative; }
.mock-card {
  background: #fff; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(18, 197, 160, .18);
  overflow: hidden;
  transform: perspective(1200px) rotateY(-4deg) rotateX(2deg);
  transition: transform .4s ease;
}
.mock-card:hover { transform: perspective(1200px) rotateY(0) rotateX(0); }
.mock-head { display: flex; align-items: center; gap: 7px; padding: 10px 14px; background: var(--deep-900); }
.mock-dot { width: 10px; height: 10px; border-radius: 50%; }
.mock-dot.red { background: #FF6B6B; }
.mock-dot.yellow { background: #FFC94D; }
.mock-dot.green { background: #4BE1A8; }
.mock-title { margin-left: 8px; color: rgba(255, 255, 255, .75); font-size: 13px; letter-spacing: .5px; }

.mock-body { padding: 16px; }
.mock-search {
  display: flex; align-items: center; gap: 9px;
  background: var(--mint-50); border: 1px solid var(--mint-200);
  border-radius: 10px; padding: 9px 13px; font-size: 12.5px; color: var(--slate);
}
.mock-search .i { color: var(--mint-600); font-size: 17px; }

.mock-steps { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.mock-step {
  display: flex; align-items: center; gap: 10px;
  background: #fff; border: 1px solid var(--line);
  border-radius: 10px; padding: 9px 13px; font-size: 13px; font-weight: 600; color: var(--deep-800);
  transition: all .25s ease;
}
.mock-step:hover { border-color: var(--mint-400); }
.mock-step-no { font-family: var(--font-num); font-size: 13px; color: var(--mint-600); font-weight: 800; }
.mock-step .ok { margin-left: auto; color: var(--mint-500); font-size: 15px; }

.mock-pie { display: flex; align-items: center; gap: 18px; margin-top: 14px; padding: 10px 13px; background: var(--mint-50); border-radius: 12px; }
.mock-pie-ring {
  width: 72px; height: 72px; flex: none;
  border-radius: 50%;
  background: conic-gradient(var(--mint-500) 0 62%, var(--mint-300) 62% 87%, #DCEBE7 87% 100%);
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.mock-pie-ring::after { content: ''; position: absolute; inset: 9px; background: #fff; border-radius: 50%; }
.mock-pie-num { position: relative; z-index: 1; font-family: var(--font-num); font-size: 16px; font-weight: 800; color: var(--deep-900); }
.mock-pie-txt { position: absolute; z-index: 1; top: 54px; font-size: 9px; color: var(--slate); white-space: nowrap; }
.mock-pie-legend { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--deep-800); }
.mock-pie-legend p { display: flex; align-items: center; gap: 8px; }
.mock-pie-legend .lg { width: 10px; height: 10px; border-radius: 3px; }
.lg.mint { background: var(--mint-500); }
.lg.lime { background: var(--mint-300); }
.lg.gray { background: #DCEBE7; }

.mock-float-card {
  position: absolute; display: flex; align-items: center; gap: 7px;
  background: #fff; border-radius: 12px; padding: 9px 13px;
  box-shadow: var(--shadow-lg); font-size: 12px; color: var(--slate);
  border: 1px solid rgba(18, 197, 160, .2);
  animation: floatY 5s ease-in-out infinite;
  z-index: 6; pointer-events: none;
}
.mock-float-card b { color: var(--deep-900); font-size: 14px; font-family: var(--font-num); }
.mock-float-card .i { color: var(--mint-600); font-size: 15px; }
/* 移出模拟卡：上方/下方 hero 浅绿背景空白处，缩小突出量避免被下方 stats 压住 */
.fc-1 { top: -32px; left: 28px; }
.fc-2 { bottom: -12px; right: 28px; animation-delay: 2.5s; }

@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* 轮播视觉 2：四大找客模式 */
.mode-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 16px; }
.mode-cell {
  display: flex; flex-direction: column; gap: 3px;
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 14px; transition: all .25s ease;
}
.mode-cell:hover { border-color: var(--mint-400); transform: translateY(-2px); }
.mode-cell .i { color: var(--mint-600); font-size: 18px; }
.mode-cell span { font-size: 14px; font-weight: 700; color: var(--deep-900); }
.mode-cell i { font-style: normal; font-size: 12px; color: var(--slate); }
.mock-stat-row { display: flex; gap: 10px; margin-top: 14px; }
.mock-stat-row p { flex: 1; text-align: center; background: var(--mint-50); border-radius: 12px; padding: 10px 6px; }
.mock-stat-row b { display: block; font-family: var(--font-num); font-size: 18px; font-weight: 800; color: var(--mint-700); }
.mock-stat-row span { font-size: 12px; color: var(--slate); }

/* 轮播视觉 3：AI 智能筛客 */
.p-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; margin-top: 16px; }
.p-card-head { display: flex; align-items: center; gap: 10px; }
.p-avatar {
  width: 36px; height: 36px; flex: none; border-radius: 10px;
  background: linear-gradient(135deg, var(--mint-400), var(--mint-600));
  color: #fff; font-weight: 800; font-size: 15px;
  display: flex; align-items: center; justify-content: center;
}
.p-name { flex: 1; font-size: 14px; font-weight: 700; color: var(--deep-900); }
.p-score { text-align: right; font-family: var(--font-num); font-size: 22px; font-weight: 800; color: var(--mint-600); line-height: 1; }
.p-score i { display: block; font-style: normal; font-size: 11px; font-weight: 600; color: var(--slate); margin-top: 3px; }
.p-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.p-tag { font-size: 12px; color: var(--mint-700); background: var(--mint-50); border: 1px solid var(--mint-200); border-radius: 999px; padding: 4px 12px; font-weight: 600; }
.score-list { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; }
.score-row { display: flex; align-items: center; gap: 10px; font-size: 12.5px; color: var(--deep-800); }
.score-row > span { width: 64px; flex: none; }
.score-bar { flex: 1; height: 8px; border-radius: 999px; background: #E9F6F1; overflow: hidden; }
.score-bar i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--mint-400), var(--mint-600)); }
.score-row b { font-family: var(--font-num); font-size: 13px; color: var(--mint-700); width: 42px; text-align: right; flex: none; }

/* ---------------- 数据指标 ---------------- */
.stats { padding: 0; margin-top: -34px; position: relative; z-index: 5; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  background: var(--gradient-deep);
  border-radius: var(--radius-lg);
  padding: 44px 30px;
  box-shadow: 0 24px 60px rgba(4, 35, 30, .25);
  background-image: var(--gradient-deep), radial-gradient(circle at 15% 20%, rgba(58, 214, 180, .18), transparent 40%), radial-gradient(circle at 85% 80%, rgba(58, 214, 180, .15), transparent 40%);
}
.stat-item { text-align: center; padding: 6px 10px; }
.stat-num { font-family: var(--font-num); font-size: 42px; font-weight: 800; color: #fff; line-height: 1.1; letter-spacing: 1px; }
.stat-num span { background: linear-gradient(135deg, #74E5CA, #12C5A0); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-label { margin-top: 10px; font-size: 15.5px; font-weight: 600; color: #fff; }
.stat-desc { margin-top: 6px; font-size: 12.5px; color: rgba(255, 255, 255, .55); }

/* ---------------- 产品优势 ---------------- */
.features { background: #fff; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature-card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px 24px;
  transition: all .35s ease;
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--mint-300);
}
.feature-icon {
  display: inline-flex; width: 58px; height: 58px; border-radius: 16px;
  background: var(--gradient); color: #fff; align-items: center; justify-content: center;
  font-size: 28px; margin-bottom: 20px;
  box-shadow: 0 10px 24px rgba(0, 169, 134, .3);
}
.feature-title { font-size: 18.5px; font-weight: 700; }
.feature-desc { margin-top: 12px; font-size: 14px; color: var(--slate); min-height: 66px; }
.feature-points { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.feature-points li {
  font-size: 12.5px; color: var(--mint-700);
  background: var(--mint-50); border: 1px solid var(--mint-100);
  padding: 5px 12px; border-radius: 999px; font-weight: 500;
}

/* ---------------- 核心功能（三步闭环） ---------------- */
.workflow { background: linear-gradient(180deg, #F0FBF8 0%, #fff 100%); }
.workflow-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; position: relative; }
.wf-step { position: relative; }
.wf-no {
  display: inline-flex; width: 56px; height: 56px; border-radius: 18px;
  background: var(--gradient); color: #fff; font-family: var(--font-num);
  font-size: 22px; font-weight: 800; align-items: center; justify-content: center;
  margin-bottom: 18px; box-shadow: 0 10px 24px rgba(0, 169, 134, .3);
}
.wf-card {
  background: #fff; border-radius: var(--radius); padding: 28px 26px;
  border: 1px solid var(--line); transition: all .35s ease; height: 100%;
}
.wf-card:hover { box-shadow: var(--shadow-lg); border-color: var(--mint-300); transform: translateY(-6px); }
.wf-name { font-size: 20px; font-weight: 800; color: var(--deep-900); }
.wf-desc { margin-top: 10px; font-size: 14px; color: var(--slate); }
.wf-points { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.wf-points li {
  font-size: 12.5px; color: var(--mint-700);
  background: var(--mint-50); border: 1px solid var(--mint-100);
  padding: 5px 12px; border-radius: 999px; font-weight: 500;
}
.wf-arrow {
  position: absolute; top: 16px; right: -24px; z-index: 2;
  width: 34px; height: 34px; border-radius: 50%;
  background: #fff; border: 1.5px solid var(--mint-300);
  color: var(--mint-600); display: flex; align-items: center; justify-content: center;
  font-size: 17px; box-shadow: var(--shadow);
}
.wf-step:last-child .wf-arrow { display: none; }

/* ---------------- 行业场景 ---------------- */
.scenes { background: var(--deep-900); background-image: radial-gradient(circle at 80% 10%, rgba(58, 214, 180, .15), transparent 45%), radial-gradient(circle at 10% 90%, rgba(58, 214, 180, .1), transparent 40%); position: relative; overflow: hidden; }
.scenes .section-title { color: #fff; }
.scenes .section-subtitle { color: rgba(255, 255, 255, .6); }
.scenes-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.scene-card {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius); padding: 30px 20px; text-align: center;
  backdrop-filter: blur(8px);
  transition: all .35s ease;
}
.scene-card:hover { background: rgba(255, 255, 255, .12); transform: translateY(-8px); border-color: var(--mint-400); }
.scene-icon { display: inline-flex; width: 56px; height: 56px; border-radius: 50%; background: rgba(58, 214, 180, .15); color: var(--mint-300); align-items: center; justify-content: center; font-size: 26px; margin-bottom: 16px; }
.scene-name { color: #fff; font-size: 16.5px; font-weight: 700; }
.scene-desc { margin-top: 10px; font-size: 13px; color: rgba(255, 255, 255, .6); }

/* ---------------- 技术底座 ---------------- */
.tech { background: #fff; }
.tech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tech-card {
  display: flex; align-items: flex-start; gap: 16px;
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px;
  transition: all .3s ease;
}
.tech-card:hover { border-color: var(--mint-400); box-shadow: var(--shadow); }
.tech-icon { flex: none; width: 48px; height: 48px; border-radius: 14px; background: var(--mint-50); color: var(--mint-600); display: flex; align-items: center; justify-content: center; font-size: 24px; }
.tech-name { font-size: 16px; font-weight: 700; }
.tech-desc { margin-top: 6px; font-size: 13px; color: var(--slate); }

/* ---------------- 客户评价 ---------------- */
.testimonials { background: var(--mint-50); }
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.testimonial-card {
  background: #fff; border-radius: var(--radius); padding: 32px 28px;
  border: 1px solid var(--line); position: relative; transition: all .3s ease;
}
.testimonial-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.quote { position: absolute; top: 24px; right: 24px; width: 40px; height: 40px; color: var(--mint-200); }
.testimonial-text { margin-top: 14px; font-size: 15px; color: var(--ink); line-height: 1.85; }
.testimonial-meta { display: flex; align-items: center; gap: 12px; margin-top: 20px; }
.avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--gradient); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700;
}
.meta-box { display: flex; flex-direction: column; }
.meta-box .name { font-weight: 700; font-size: 15px; }
.meta-box .role { font-size: 12.5px; color: var(--slate); }

/* ---------------- 常见问题 ---------------- */
.faq { background: #fff; }
.faq-list {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 0 48px; padding: 16px 44px 20px;
  background: #fff; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
}
.faq-item {
  display: flex; align-items: stretch; gap: 18px; padding: 18px 0;
  border-bottom: 1px solid var(--line); transition: all .3s ease;
}
.faq-item:last-child,
.faq-list .faq-item:nth-last-child(-n+2):nth-child(2n) { border-bottom: none; }
.faq-no {
  flex: none; width: 38px; height: 38px; border-radius: 12px;
  background: var(--mint-50); color: var(--mint-700);
  font-weight: 800; font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-top: 8px; transition: all .3s ease;
}
.faq-body { flex: 1; }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 0; font-size: 16px; font-weight: 700; color: var(--deep-900); text-align: left;
  background: transparent; border: none; cursor: pointer;
}
.faq-q .i { font-size: 20px; color: var(--mint-600); transition: transform .3s ease; flex: none; }
.faq-item.open .faq-q .i { transform: rotate(180deg); }
.faq-item.open .faq-no { background: var(--gradient); color: #fff; box-shadow: 0 6px 18px rgba(18, 197, 160, .35); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-a-inner { padding: 0 0 16px; font-size: 14.5px; color: var(--slate); line-height: 1.8; }
@media (max-width: 880px) {
  .faq-list { padding: 4px 24px 12px; gap: 0; grid-template-columns: 1fr; }
  .faq-item { padding: 14px 0; }
}

/* ---------------- 联系我们 ---------------- */
.contact { background: linear-gradient(180deg, #fff 0%, var(--mint-50) 100%); padding-bottom: 120px; }
.contact-card {
  display: grid; grid-template-columns: 1fr 1.15fr; gap: 0;
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); background: #fff;
}
.contact-info { background: var(--gradient-deep); padding: 52px 46px; color: #fff; position: relative; overflow: hidden; }
.contact-info::after { content: ''; position: absolute; width: 320px; height: 320px; border-radius: 50%; background: radial-gradient(circle, rgba(58, 214, 180, .2), transparent 65%); bottom: -120px; right: -100px; }
.contact-title { font-size: 30px; font-weight: 800; line-height: 1.4; position: relative; z-index: 1; }
.contact-subtitle { margin-top: 12px; font-size: 15px; color: rgba(255, 255, 255, .7); position: relative; z-index: 1; }
.contact-list { margin-top: 36px; display: flex; flex-direction: column; gap: 22px; position: relative; z-index: 1; }
.contact-list li { display: flex; align-items: flex-start; gap: 16px; }
.ci-icon {
  flex: none; width: 46px; height: 46px; border-radius: 14px;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .18);
  display: flex; align-items: center; justify-content: center; font-size: 21px; color: var(--mint-300);
}
.ci-box { display: flex; flex-direction: column; gap: 3px; }
.ci-box b { font-size: 13px; font-weight: 600; color: rgba(255, 255, 255, .55); }
.ci-box a, .ci-box span { font-size: 16px; font-weight: 700; color: #fff; word-break: break-all; }
.ci-box a:hover { color: var(--mint-300); }
.contact-serve { margin-top: 36px; font-size: 13.5px; color: rgba(255, 255, 255, .55); position: relative; z-index: 1; }

.contact-form-box { padding: 48px 46px; }
.form-title { font-size: 22px; font-weight: 800; display: flex; align-items: baseline; gap: 12px; }
.form-title span { font-size: 13px; color: var(--mint-600); font-weight: 600; letter-spacing: 1px; }
.lead-form { margin-top: 26px; display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--deep-800); }
.form-field label i { color: #E5484D; font-style: normal; }
.form-field input, .form-field textarea {
  width: 100%; border: 1.5px solid var(--line); border-radius: 12px;
  padding: 13px 16px; font-size: 15px; color: var(--ink);
  background: #FBFEFD; transition: all .25s ease; outline: none;
}
.form-field input:focus, .form-field textarea:focus { border-color: var(--mint-500); background: #fff; box-shadow: 0 0 0 4px rgba(18, 197, 160, .12); }
.form-field input::placeholder, .form-field textarea::placeholder { color: #A8BFBA; }
.form-field textarea { resize: vertical; min-height: 96px; }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
.form-agree { display: flex; align-items: flex-start; gap: 9px; font-size: 13px; color: var(--slate); }
.form-agree input { width: 17px; height: 17px; margin-top: 2px; accent-color: var(--mint-600); flex: none; }
.form-agree a { color: var(--mint-700); text-decoration: underline; }
.form-note { text-align: center; font-size: 12.5px; color: #9DB8B2; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: var(--deep-950); color: rgba(255, 255, 255, .65); padding: 70px 0 30px; }
.footer-mini { padding: 28px 0; }
.footer-top { display: grid; grid-template-columns: auto 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.footer-logo .logo-text { color: #fff; }
.footer-logo .logo-img { width: 161px; height: 63px; object-fit: contain; }
.footer-logo-center { display: flex; justify-content: center; margin-bottom: 18px; }
.footer-slogan { margin-top: 18px; font-size: 14px; line-height: 1.9; max-width: 380px; }
.footer-contact { margin-top: 20px; display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.footer-contact a:hover { color: var(--mint-300); }
.footer-contact a, .footer-contact span { display: flex; align-items: flex-start; gap: 8px; }
.footer-contact .i { width: 16px; height: 16px; color: var(--mint-300); flex: none; margin-top: 3px; }
.footer-title { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; transition: color .2s ease; }
.footer-links a:hover { color: var(--mint-300); }
.footer-qr .qr-box {
  display: inline-flex; flex-direction: column; align-items: center; gap: 10px;
  border: 1px solid rgba(255, 255, 255, .15); border-radius: 14px; padding: 18px;
  background: rgba(255, 255, 255, .05);
}
.footer-qr .qr-box .i { font-size: 44px; color: var(--mint-300); }
.footer-qr .qr-box img { width: 108px; height: 108px; border-radius: 10px; display: block; }
.footer-qr .qr-box span { font-size: 12.5px; text-align: center; line-height: 1.7; }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding-top: 26px; font-size: 13px; }
.footer-bottom a:hover { color: var(--mint-300); }

/* ---------------- 悬浮工具 & 移动端底栏 ---------------- */
.float-tools { position: fixed; right: 20px; bottom: 110px; z-index: 90; display: flex; flex-direction: column; gap: 12px; }
.float-btn {
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--gradient); color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 20px; box-shadow: 0 8px 22px rgba(0, 169, 134, .4); transition: all .3s ease;
}
.float-btn:hover { transform: translateY(-4px) scale(1.05); }
.ft-top { background: rgba(6, 43, 37, .7); box-shadow: none; opacity: 0; pointer-events: none; transition: all .3s ease; }
.ft-top.show { opacity: 1; pointer-events: auto; }
.ft-wechat { position: relative; }
.wechat-pop {
  position: absolute; right: calc(100% + 14px); bottom: 0;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 12px 12px 10px; width: 152px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 7px;
  box-shadow: 0 12px 34px rgba(6, 43, 37, .16); z-index: 99;
  opacity: 0; visibility: hidden; transform: translateX(10px);
  transition: all .28s ease; pointer-events: none;
}
.wechat-pop::after {
  content: ''; position: absolute; left: 100%; bottom: 14px;
  border: 7px solid transparent; border-left-color: #fff;
}
.wechat-pop b { font-size: 13px; color: var(--deep-900); }
.wechat-pop img { width: 120px; height: 120px; border-radius: 8px; display: block; background: #fff; }
.wechat-pop i { font-style: normal; font-size: 12px; color: var(--slate); }
.ft-wechat:hover .wechat-pop { opacity: 1; visibility: visible; transform: translateX(0); pointer-events: auto; }

/* ---------------- 隐私弹窗 ---------------- */
.modal { position: fixed; inset: 0; z-index: 200; display: none; align-items: center; justify-content: center; padding: 20px; }
.modal.open { display: flex; }
.modal-mask { position: absolute; inset: 0; background: rgba(4, 35, 30, .55); backdrop-filter: blur(4px); }
.modal-box {
  position: relative; width: min(560px, 100%); background: #fff; border-radius: var(--radius-lg);
  padding: 34px 34px 30px; max-height: 82vh; display: flex; flex-direction: column; gap: 16px;
  box-shadow: var(--shadow-lg);
}
.modal-box h3 { font-size: 20px; font-weight: 800; }
.modal-close { position: absolute; top: 16px; right: 16px; width: 34px; height: 34px; border-radius: 50%; background: var(--mint-50); color: var(--slate); display: flex; align-items: center; justify-content: center; font-size: 17px; }
.modal-body { overflow-y: auto; font-size: 14px; color: var(--slate); }
.modal-body h4 { color: var(--deep-900); margin: 14px 0 6px; font-size: 15px; }
.modal-body p { margin-bottom: 8px; }

/* ---------------- 提示 ---------------- */
.toast {
  position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%) translateY(20px);
  background: var(--deep-900); color: #fff; padding: 13px 26px; border-radius: 999px;
  font-size: 14.5px; box-shadow: var(--shadow-lg); z-index: 300;
  opacity: 0; transition: all .35s ease; pointer-events: none; max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: #C0392B; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .logo-img { width: 101px; height: 46px; }
  .header-tel { display: none; }
  .hero-title { font-size: 38px; }
  .features-grid, .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .scenes-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .wf-arrow { display: none; }
  .fc-1 { top: -42px; left: 22px; }
  .fc-2 { bottom: -26px; right: 22px; }
  .hero-slide:nth-child(3) .fc-2 { bottom: -36px; left: 50%; right: auto; }
}

@media (max-width: 768px) {
  html { scroll-padding-top: 79px; }
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 40px; }
  .section-title { font-size: 26px; }

  .header-inner { padding: 8px 0; }
  .logo-img { width: 101px; height: 46px; }
  .logo-sub { display: none; }
  .main-nav {
    position: fixed; top: 62px; left: 0; right: 0;
    background: #fff; box-shadow: 0 16px 30px rgba(6, 89, 74, .12);
    padding: 10px 24px 22px; border-bottom: 1px solid var(--line);
    transform: translateY(-120%); transition: transform .35s ease; z-index: 99;
  }
  .main-nav.open { transform: translateY(0); }
  .nav-list { flex-direction: column; gap: 4px; }
  .nav-link { padding: 13px 16px; font-size: 16px; border-radius: 12px; }
  .nav-toggle { display: inline-flex; }
  .header-tel { display: none; }

  .hero-slide { padding: 99px 0 110px; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .car-prev { left: 8px; }
  .car-next { right: 8px; }
  .car-arrow { width: 38px; height: 38px; font-size: 18px; }
  .car-dots { bottom: 42px; }
  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 15.5px; }
  .hero-visual { max-width: 430px; margin: 0 auto; width: 100%; }
  .fc-1 { top: 8px; right: 10px; left: auto; }
  .fc-2 { bottom: -18px; right: 12px; }
  .hero-slide:nth-child(3) .fc-2 { bottom: -28px; left: 50%; right: auto; }
  .mock-float-card { padding: 9px 12px; font-size: 12px; z-index: 6; pointer-events: none; }
  .mock-float-card b { font-size: 14px; }

  .stats { margin-top: -22px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 26px 14px; padding: 34px 22px; }
  .stat-num { font-size: 34px; }

  .features-grid, .tech-grid { grid-template-columns: 1fr; }
  .feature-desc { min-height: 0; }
  .workflow-grid { grid-template-columns: 1fr; gap: 20px; }
  .scenes-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: 1fr; }
  .contact-card { grid-template-columns: 1fr; }
  .contact-info { padding: 36px 26px; }
  .contact-form-box { padding: 36px 26px; }
  .form-row { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-qr { grid-column: 1 / -1; justify-self: center; text-align: center; }
  .footer-logo .logo-img { width: 113px; height: 52px; }
  .footer-bottom { flex-direction: column; }

  .float-tools { bottom: 24px; right: 14px; }
}

@media (max-width: 480px) {
  .container { width: min(1200px, 100% - 32px); }
  .hero-title { font-size: 27px; }
  .hero-badge { font-size: 12.5px; }
  .hero-cta { flex-direction: column; }
  .btn-lg { width: 100%; }
  .scenes-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .scene-card { padding: 22px 14px; }
  .scene-icon { width: 46px; height: 46px; font-size: 22px; }
  .toast { bottom: 100px; }
}

/* ---------------- 打印/无障碍 ---------------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}