/* ============================================================
 *  上海花吖信息技术有限公司 · 官网样式
 *  主色：活力橙  #FF6B35
 *  辅色：深空蓝  #1E3A8A
 *  强调：紫   #8B5CF6
 * ============================================================ */

/* -------- Reset & Base -------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #1f2937;
  background: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.3; color: #0f172a; }
p { margin: 0; }

:root {
  --brand: #ff6b35;
  --brand-dark: #e85a25;
  --brand-light: #fff4ec;
  --navy: #1e3a8a;
  --navy-dark: #0f1f4d;
  --purple: #8b5cf6;
  --cyan: #06b6d4;
  --text: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --bg: #ffffff;
  --bg-alt: #f9fafb;
  --bg-dark: #0f172a;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, .12);
  --radius: 14px;
  --radius-lg: 22px;
  --container: 1240px;
  --transition: .3s cubic-bezier(.4, 0, .2, 1);
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* -------- Buttons -------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--brand) 0%, #ff8c42 100%);
  color: #fff;
  box-shadow: 0 8px 20px rgba(255, 107, 53, .35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 107, 53, .45);
}
.btn-ghost {
  background: rgba(255, 255, 255, .12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .35);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .22); }
.btn-outline {
  background: transparent;
  color: var(--brand);
  border: 2px solid var(--brand);
}
.btn-outline:hover { background: var(--brand); color: #fff; }

/* -------- Top Bar -------- */
.topbar {
  background: var(--navy-dark);
  color: #cbd5e1;
  font-size: 13px;
  padding: 8px 0;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.topbar a { color: #cbd5e1; transition: color var(--transition); }
.topbar a:hover { color: #fff; }
.topbar .sep { margin: 0 12px; opacity: .4; }

/* -------- Navbar -------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .95);
  backdrop-filter: saturate(180%) blur(12px);
  box-shadow: var(--shadow-sm);
}
.navbar .container { display: flex; justify-content: space-between; align-items: center; height: 76px; }
.logo { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 19px; color: var(--navy-dark); }
.logo-mark {
  width: 42px; height: 42px; border-radius: 12px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--purple) 100%);
  display: grid; place-items: center; color: #fff; font-weight: 800;
  box-shadow: 0 6px 16px rgba(255, 107, 53, .3);
}
.nav-links { display: flex; gap: 8px; }
.nav-links a {
  padding: 10px 18px; border-radius: 10px;
  font-weight: 500; color: var(--text); transition: var(--transition);
  position: relative;
}
.nav-links a:hover { color: var(--brand); background: var(--brand-light); }
.nav-links a.active { color: var(--brand); background: var(--brand-light); }

.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-phone { color: var(--navy); font-weight: 600; font-size: 14px; }
.nav-phone svg { vertical-align: -3px; margin-right: 4px; }

.menu-toggle { display: none; }

/* -------- Hero -------- */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(115deg, rgba(15, 31, 77, .88) 0%, rgba(139, 92, 246, .55) 60%, rgba(255, 107, 53, .35) 100%),
    url("../assets/images/hero-playground.png") center/cover no-repeat;
  z-index: -2;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(255, 107, 53, .35), transparent 60%);
  z-index: -1;
}
.hero-inner { padding: 110px 0 120px; max-width: 760px; }
.hero h1 {
  color: #fff;
  font-size: clamp(32px, 4.8vw, 56px);
  line-height: 1.18;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}
.hero h1 .accent {
  background: linear-gradient(135deg, #ffb088, #ffd194);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { font-size: 18px; line-height: 1.7; color: rgba(255, 255, 255, .85); max-width: 600px; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, .15);
}
.hero-stats .stat { color: #fff; }
.hero-stats .stat .num { font-size: 36px; font-weight: 800; color: var(--brand); display: block; line-height: 1; }
.hero-stats .stat .label { font-size: 13px; color: rgba(255, 255, 255, .7); margin-top: 8px; }

/* -------- Section -------- */
section { padding: 100px 0; }
section.alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 60px; }
.section-head .eyebrow {
  display: inline-block;
  padding: 6px 16px; border-radius: 999px;
  background: var(--brand-light); color: var(--brand);
  font-size: 13px; font-weight: 600; letter-spacing: .5px;
  margin-bottom: 18px;
}
.section-head h2 {
  font-size: clamp(28px, 3.5vw, 42px);
  margin-bottom: 16px;
  letter-spacing: -.5px;
}
.section-head p { color: var(--text-muted); font-size: 16px; }

/* -------- Service Cards (5 大业务) -------- */
.services {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.service-card {
  background: #fff;
  padding: 36px 24px;
  border-radius: var(--radius);
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 4px;
  background: linear-gradient(90deg, var(--brand), var(--purple));
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 16px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand-light) 0%, rgba(139, 92, 246, .1) 100%);
  color: var(--brand);
}
.service-card h3 { font-size: 18px; margin-bottom: 10px; }
.service-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* -------- Feature / Split -------- */
.split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 70px;
  align-items: center;
}
.split.reverse { grid-template-columns: 1fr 1.1fr; }
.split.reverse .split-img { order: 1; }
.split-img {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.split-img img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
.split-img::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 50%, rgba(30, 58, 138, .25));
}
.split-text .eyebrow {
  display: inline-block;
  padding: 6px 14px; border-radius: 999px;
  background: var(--brand-light); color: var(--brand);
  font-size: 13px; font-weight: 600;
  margin-bottom: 18px;
}
.split-text h2 {
  font-size: clamp(26px, 3vw, 38px);
  margin-bottom: 18px;
  letter-spacing: -.4px;
}
.split-text > p { color: var(--text-muted); margin-bottom: 28px; }

.feature-list { display: flex; flex-direction: column; gap: 16px; }
.feature-list li { display: flex; gap: 14px; align-items: flex-start; }
.feature-list .check {
  flex: 0 0 24px; width: 24px; height: 24px; border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--purple));
  color: #fff; display: grid; place-items: center;
  font-size: 13px; font-weight: 700; margin-top: 4px;
}
.feature-list strong { display: block; color: var(--navy-dark); margin-bottom: 4px; }
.feature-list span { color: var(--text-muted); font-size: 14px; }

/* -------- Industry Block (行业周边板块) -------- */
.industry-banner {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 50%, #4c1d95 100%);
  border-radius: var(--radius-lg);
  padding: 70px 60px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.industry-banner::before {
  content: "";
  position: absolute; right: -100px; top: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255, 107, 53, .35), transparent 70%);
}
.industry-banner::after {
  content: "";
  position: absolute; left: -100px; bottom: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, .35), transparent 70%);
}
.industry-banner > * { position: relative; z-index: 1; }
.industry-banner h2 { color: #fff; font-size: clamp(26px, 3vw, 38px); margin-bottom: 14px; }
.industry-banner p { color: rgba(255, 255, 255, .82); font-size: 16px; max-width: 640px; margin-bottom: 30px; }
.industry-banner .meta {
  display: flex; gap: 30px; flex-wrap: wrap;
  margin-top: 40px; padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, .15);
}
.industry-banner .meta div { color: rgba(255, 255, 255, .7); font-size: 14px; }
.industry-banner .meta strong { display: block; color: #fff; font-size: 22px; margin-bottom: 4px; }

.flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 70px;
}
.flow-step {
  position: relative;
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.flow-step:hover { border-color: var(--brand); transform: translateY(-4px); }
.flow-step .num {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--purple) 100%);
  color: #fff;
  display: grid; place-items: center;
  font-weight: 700; margin-bottom: 18px;
}
.flow-step h4 { font-size: 17px; margin-bottom: 8px; }
.flow-step p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* -------- Product Cards -------- */
.products {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-card .ph {
  position: relative;
  height: 220px;
  overflow: hidden;
  display: grid; place-items: center;
  font-size: 64px;
  color: #fff;
}
.product-card .ph::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--brand) 0%, var(--purple) 100%);
  opacity: .9;
}
.product-card .ph.alt::before { background: linear-gradient(135deg, var(--navy) 0%, var(--purple) 100%); }
.product-card .ph img { position: relative; width: 100%; height: 100%; object-fit: cover; }
.product-card .ph svg { position: relative; z-index: 1; }
.product-card .body { padding: 24px; }
.product-card h3 { font-size: 19px; margin-bottom: 10px; }
.product-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }
.product-card .tags { display: flex; gap: 6px; flex-wrap: wrap; }
.product-card .tag {
  font-size: 12px; padding: 4px 10px;
  border-radius: 999px;
  background: var(--brand-light); color: var(--brand);
  font-weight: 600;
}

/* -------- Stats Strip -------- */
.stats {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  color: #fff;
}
.stats .item .num {
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, #ffb088, #ffd194);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  display: block; line-height: 1;
  margin-bottom: 10px;
}
.stats .item .label { color: rgba(255, 255, 255, .75); font-size: 14px; }

/* -------- Quote / Fee -------- */
.fee-card {
  background: linear-gradient(135deg, #fff 0%, var(--bg-alt) 100%);
  border: 2px dashed var(--brand);
  border-radius: var(--radius-lg);
  padding: 50px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.fee-card .big {
  font-size: clamp(54px, 7vw, 84px);
  font-weight: 800;
  background: linear-gradient(135deg, var(--brand), var(--purple));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1;
  margin: 20px 0;
}
.fee-card h3 { font-size: 22px; margin-bottom: 10px; }
.fee-card p { color: var(--text-muted); max-width: 520px; margin: 0 auto; }
.fee-card small {
  display: block; margin-top: 24px;
  color: var(--text-muted); font-size: 13px;
}

/* -------- Info Cards (info grid) -------- */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.info-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.info-card:hover { border-color: var(--brand); box-shadow: var(--shadow-md); }
.info-card .icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--brand-light);
  color: var(--brand);
  display: grid; place-items: center;
  margin-bottom: 20px;
}
.info-card h4 { font-size: 18px; margin-bottom: 10px; }
.info-card p { color: var(--text-muted); font-size: 14px; line-height: 1.7; }

/* -------- Table (服务商列表模拟) -------- */
.table-wrap {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.filter-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding: 20px 24px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}
.filter-bar input, .filter-bar select {
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  font-family: inherit; font-size: 14px;
  color: var(--text);
  min-width: 180px;
}
.filter-bar input:focus, .filter-bar select:focus { outline: 2px solid var(--brand); border-color: transparent; }
.filter-bar .filter-search { flex: 1; min-width: 220px; }

.list-table { width: 100%; border-collapse: collapse; }
.list-table th, .list-table td { padding: 18px 24px; text-align: left; }
.list-table th {
  background: var(--bg-alt);
  color: var(--text-muted);
  font-weight: 600; font-size: 13px;
  letter-spacing: .5px; text-transform: uppercase;
}
.list-table tr + tr td { border-top: 1px solid var(--border); }
.list-table td { font-size: 14px; }
.list-table .badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px; font-weight: 600;
}
.badge.green { background: #dcfce7; color: #166534; }
.badge.orange { background: var(--brand-light); color: var(--brand); }
.badge.blue { background: #dbeafe; color: #1e40af; }
.badge.gray { background: #f3f4f6; color: #4b5563; }

/* -------- About Page -------- */
.about-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: #fff;
  padding: 110px 0 90px;
  text-align: center;
}
.about-hero h1 { color: #fff; font-size: clamp(32px, 4.5vw, 48px); margin-bottom: 16px; }
.about-hero p { color: rgba(255, 255, 255, .8); max-width: 640px; margin: 0 auto; }

.cred-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.cred {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; gap: 18px; align-items: center;
  transition: var(--transition);
}
.cred:hover { border-color: var(--brand); }
.cred .ico {
  flex: 0 0 48px; width: 48px; height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand-light), rgba(139, 92, 246, .1));
  color: var(--brand);
  display: grid; place-items: center;
}
.cred .label { font-size: 13px; color: var(--text-muted); margin-bottom: 4px; }
.cred .value { font-weight: 700; color: var(--navy-dark); font-size: 15px; }

/* -------- Contact -------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}
.contact-info-card {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  position: relative;
  overflow: hidden;
}
.contact-info-card::before {
  content: "";
  position: absolute; right: -80px; top: -80px;
  width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(255, 107, 53, .35), transparent 70%);
}
.contact-info-card h3 { color: #fff; font-size: 24px; margin-bottom: 8px; }
.contact-info-card > p { color: rgba(255, 255, 255, .75); margin-bottom: 36px; position: relative; z-index: 1; }
.contact-info-card ul { display: flex; flex-direction: column; gap: 22px; position: relative; z-index: 1; }
.contact-info-card li { display: flex; gap: 14px; align-items: flex-start; color: rgba(255, 255, 255, .9); font-size: 14px; }
.contact-info-card li .ico {
  flex: 0 0 38px; width: 38px; height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .12);
  display: grid; place-items: center;
}
.contact-info-card li strong { display: block; color: #fff; font-weight: 600; margin-bottom: 4px; }

.form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  border: 1px solid var(--border);
}
.form h3 { font-size: 22px; margin-bottom: 8px; }
.form .form-sub { color: var(--text-muted); margin-bottom: 30px; font-size: 14px; }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 14px; color: var(--navy-dark); font-weight: 600; }
.field label .req { color: var(--brand); }
.field input, .field select, .field textarea {
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  font-family: inherit; font-size: 14px;
  color: var(--text);
  transition: var(--transition);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--brand);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(255, 107, 53, .12);
}
.field textarea { resize: vertical; min-height: 120px; }
.form .submit-row { margin-top: 24px; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.form .submit-row small { color: var(--text-muted); font-size: 13px; }

/* -------- CTA Strip -------- */
.cta-strip {
  background: linear-gradient(135deg, var(--brand) 0%, #ff8c42 50%, var(--purple) 100%);
  border-radius: var(--radius-lg);
  padding: 60px 50px;
  color: #fff;
  display: flex; align-items: center; justify-content: space-between; gap: 30px;
  position: relative; overflow: hidden;
}
.cta-strip::after {
  content: ""; position: absolute; right: -100px; top: -100px;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(255, 255, 255, .25), transparent 70%);
}
.cta-strip h3 { color: #fff; font-size: clamp(22px, 2.6vw, 30px); margin-bottom: 8px; max-width: 620px; }
.cta-strip p { color: rgba(255, 255, 255, .9); }
.cta-strip .btn-primary { background: #fff; color: var(--brand); box-shadow: 0 8px 20px rgba(0, 0, 0, .12); }
.cta-strip .btn-primary:hover { background: #fff5ec; }

/* -------- Footer -------- */
.footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 70px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 50px;
}
.footer h5 { color: #fff; font-size: 15px; margin-bottom: 22px; letter-spacing: .5px; }
.footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 18px; color: #94a3b8; }
.footer ul { display: flex; flex-direction: column; gap: 10px; }
.footer ul a { color: #94a3b8; transition: color var(--transition); font-size: 14px; }
.footer ul a:hover { color: var(--brand); }
.footer-contact { font-size: 14px; line-height: 1.8; }
.footer-contact strong { color: #fff; display: block; margin-bottom: 4px; }
.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, .08);
  display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap;
  font-size: 13px;
}
.footer-bottom .links { display: flex; gap: 20px; }
.footer-bottom .links a:hover { color: var(--brand); }

/* -------- Animations -------- */
.fade-up {
  opacity: 0; transform: translateY(30px);
  transition: opacity .8s ease, transform .8s ease;
}
.fade-up.in { opacity: 1; transform: translateY(0); }

/* -------- Responsive -------- */
@media (max-width: 1080px) {
  .services { grid-template-columns: repeat(3, 1fr); }
  .products { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  section { padding: 70px 0; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: #fff;
    padding: 16px 24px;
    box-shadow: var(--shadow-md);
    transform: translateY(-10px); opacity: 0; pointer-events: none;
    transition: var(--transition);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { display: block; }
  .nav-phone { display: none; }
  .menu-toggle {
    display: grid; place-items: center;
    width: 42px; height: 42px;
    border-radius: 10px;
    background: var(--brand-light); color: var(--brand);
  }
  .split, .split.reverse, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .split.reverse .split-img { order: 0; }
  .services { grid-template-columns: repeat(2, 1fr); }
  .products { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; padding: 40px 24px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 50px; }
  .industry-banner { padding: 40px 28px; }
  .fee-card { padding: 36px 24px; }
  .cta-strip { padding: 40px 28px; flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .cred-grid { grid-template-columns: 1fr; }
  .filter-bar input, .filter-bar select { min-width: 0; flex: 1; }
  .list-table th:nth-child(4), .list-table td:nth-child(4) { display: none; }
  .form-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .services { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .container { padding: 0 18px; }
}

/* ============================================================
 *  v2 · 交互组件
 * ============================================================ */

/* -------- 可点击卡片 -------- */
.clickable { cursor: pointer; }
.clickable:hover { border-color: var(--brand) !important; }
.product-card.clickable .ph img { transition: transform .6s ease; }
.product-card.clickable:hover .ph img { transform: scale(1.06); }
.list-table tbody tr { cursor: pointer; transition: background var(--transition); }
.list-table tbody tr:hover { background: var(--brand-light); }

/* -------- Modal 弹窗 -------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(15, 23, 42, .6);
  backdrop-filter: blur(4px);
  display: grid; place-items: center;
  padding: 20px;
  opacity: 0; pointer-events: none;
  transition: opacity .25s ease;
}
.modal-mask.show { opacity: 1; pointer-events: auto; }
.modal-box {
  background: #fff;
  border-radius: 20px;
  max-width: 560px;
  width: 100%;
  max-height: 86vh;
  overflow-y: auto;
  padding: 36px 32px;
  position: relative;
  box-shadow: 0 30px 80px rgba(15, 23, 42, .25);
  transform: translateY(24px) scale(.98);
  opacity: 0;
  transition: transform .3s cubic-bezier(.2, .9, .3, 1.2), opacity .25s ease;
}
.modal-box.in { transform: translateY(0) scale(1); opacity: 1; }
.modal-close {
  position: absolute; top: 14px; right: 14px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 22px; line-height: 1;
  display: grid; place-items: center;
  transition: var(--transition);
  z-index: 2;
}
.modal-close:hover { background: var(--brand-light); color: var(--brand); }

/* 弹窗内容 */
.dm-media { border-radius: 14px; overflow: hidden; margin-bottom: 22px; max-height: 300px; }
.dm-media img { width: 100%; height: 100%; max-height: 300px; object-fit: cover; }
.dm-media-svg { display: grid; place-items: center; color: #fff; padding: 40px; min-height: 200px; }
.dm-tag {
  display: inline-block;
  padding: 5px 14px; border-radius: 999px;
  color: #fff; font-size: 12px; font-weight: 700;
  letter-spacing: 1px; margin-bottom: 14px;
}
.dm-title { font-size: 24px; margin-bottom: 10px; letter-spacing: -.3px; }
.dm-sub { color: var(--text-muted); font-size: 13px; margin-bottom: 16px; }
.dm-intro { color: var(--text-muted); font-size: 15px; line-height: 1.7; margin-bottom: 18px; }
.dm-feats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
  margin-bottom: 18px;
}
.dm-feats li {
  background: var(--bg-alt);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 13px; font-weight: 600;
  color: var(--navy-dark);
  display: flex; align-items: center; gap: 8px;
}
.dm-feats li::before {
  content: "✓";
  width: 18px; height: 18px; border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--purple));
  color: #fff; font-size: 11px;
  display: grid; place-items: center;
  flex: 0 0 18px;
}
.dm-desc { color: var(--text-muted); font-size: 14px; line-height: 1.8; margin-bottom: 24px; }
.dm-price { display: flex; align-items: baseline; gap: 8px; margin-bottom: 18px; }
.dm-price strong {
  font-size: 40px; font-weight: 800;
  background: linear-gradient(135deg, var(--brand), var(--purple));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.dm-price span { color: var(--text-muted); font-size: 14px; }
.dm-note {
  background: var(--brand-light);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 13px; color: var(--brand-dark);
  line-height: 1.7; margin-bottom: 20px;
}
.dm-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.dm-actions .btn { padding: 12px 26px; font-size: 14px; }

/* 弹窗内快捷表单 */
.modal-form { display: flex; flex-direction: column; gap: 14px; margin-top: 8px; }
.modal-form input, .modal-form textarea {
  padding: 13px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  font-family: inherit; font-size: 14px;
  color: var(--text);
  transition: var(--transition);
}
.modal-form input:focus, .modal-form textarea:focus {
  outline: none; border-color: var(--brand);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(255, 107, 53, .12);
}

/* -------- Toast 轻提示 -------- */
.toast {
  position: fixed;
  left: 50%; bottom: 48px;
  transform: translate(-50%, 20px);
  background: #0f172a;
  color: #fff;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 14px; font-weight: 600;
  box-shadow: 0 12px 32px rgba(15, 23, 42, .3);
  z-index: 300;
  opacity: 0; pointer-events: none;
  transition: transform .3s ease, opacity .3s ease;
  max-width: calc(100vw - 40px);
  text-align: center;
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }
.toast.warn { background: #b45309; }
.toast.error { background: #dc2626; }

/* -------- 返回顶部 -------- */
.back-top {
  position: fixed; right: 26px; bottom: 26px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--purple));
  color: #fff;
  display: grid; place-items: center;
  box-shadow: 0 10px 24px rgba(255, 107, 53, .4);
  z-index: 150;
  opacity: 0; pointer-events: none;
  transform: translateY(12px);
  transition: var(--transition);
}
.back-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-top:hover { transform: translateY(-4px); }

/* -------- FAQ 手风琴增强 -------- */
details summary::-webkit-details-marker { display: none; }
details[open] summary svg { transform: rotate(180deg); }
details summary svg { transition: transform .3s ease; color: var(--brand); }

/* -------- 套餐卡（行业周边） -------- */
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.plan-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 28px;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}
.plan-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.plan-card .plan-tag {
  position: absolute; top: 16px; right: 16px;
  font-size: 11px; font-weight: 700;
  padding: 4px 12px; border-radius: 999px;
  color: #fff; letter-spacing: .5px;
}
.plan-card .plan-name { font-size: 19px; margin-bottom: 6px; }
.plan-card .plan-price { margin-bottom: 20px; }
.plan-card .plan-price strong {
  font-size: 34px; font-weight: 800;
  background: linear-gradient(135deg, var(--brand), var(--purple));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.plan-card .plan-price span { color: var(--text-muted); font-size: 13px; margin-left: 4px; }
.plan-card ul { display: flex; flex-direction: column; gap: 9px; margin-bottom: 24px; }
.plan-card li { font-size: 13px; color: var(--text-muted); display: flex; gap: 8px; align-items: center; }
.plan-card li::before {
  content: "✓";
  width: 16px; height: 16px; border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--purple));
  color: #fff; font-size: 10px;
  display: grid; place-items: center; flex: 0 0 16px;
}

@media (max-width: 860px) {
  .plan-grid { grid-template-columns: 1fr; }
  .dm-feats { grid-template-columns: 1fr; }
  .modal-box { padding: 28px 22px; }
  .back-top { right: 16px; bottom: 16px; }
}