/* ============================================================
   九章格物 NineGrids · 全新站点样式
   纯手写扁平 CSS：无第三方库、无公共变量、无嵌套写法
   所有颜色与固定值直接写在各条规则中
   ============================================================ */

/* ---------- 基础重置 ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: #232a4d;
  /* background-color: #f3f6f9; */
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4 {
  color: #1d2347;
  line-height: 1.25;
  font-weight: 800;
}

::selection {
  background-color: #b8d2e6;
  color: #1d2347;
}

/* ---------- 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
 /* padding-left: 40px;
  padding-right: 40px; */
}

.wrap-md {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  /* padding-left: 40px;
  padding-right: 40px; */
}

.wrap-sm {
  width: 100%;
  max-width:1200px;
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

.section {
  padding: 100px 0;
}

.section-tint {
  background-color: #e9edf3;
}

.section-tint-warm {
  background-color: #f7f2ea;
}

.section-tint-mint {
  background-color: #e5f3ef;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.contact-split {
  grid-template-columns: 0.85fr 1.15fr;
  align-items: start;
}

.text-center {
  text-align: center;
}

/* ---------- 通用卡片 ---------- */
.card {
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 24px;
  padding: 36px;
  box-shadow: 0 12px 34px rgba(45, 75, 115, 0.08);
}

.card-hover {
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.card-hover:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 48px rgba(45, 75, 115, 0.16);
}

/* ---------- 区块标题 ---------- */
.section-head {
  max-width: 720px;
  margin: 0 auto 60px;
  text-align: center;
}

.section-kicker {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 3px;
  font-weight: 700;
  color: #2a6cb2;
  background-color: #e4edf5;
  border-radius: 999px;
  padding: 7px 18px;
  margin-bottom: 20px;
}

.section-title {
  font-size: 40px;
  margin-bottom: 18px;
}

.section-sub {
  font-size: 17px;
  color: #6a7198;
}

.accent {
  background: linear-gradient(120deg, #2a6cb2, #2f8fbe);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.accent-coral {
  background: linear-gradient(120deg, #dc6c40, #df9a43);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.accent-teal {
  background: linear-gradient(120deg, #0e9488, #2b9fc0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-foot {
  text-align: center;
  margin-top: 52px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  border-radius: 16px;
  padding: 14px 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
  white-space: nowrap;
}

.btn-primary {
  color: #ffffff;
  background: linear-gradient(135deg, #05a4fa, #40c62d);
  box-shadow: 0 10px 20px rgba(30, 90, 150, 0.25);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 34px rgba(30, 90, 150, 0.35);
}

.btn-coral {
  color: #ffffff;
  background: linear-gradient(135deg, #d47a4c, #df9a43);
  box-shadow: 0 12px 26px rgba(210, 120, 70, 0.35);
}

.btn-coral:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 34px rgba(210, 120, 70, 0.45);
}

.btn-teal {
  color: #ffffff;
  background: linear-gradient(135deg, #12a48e, #2b9fc0);
  box-shadow: 0 12px 26px rgba(15, 140, 125, 0.32);
}

.btn-teal:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 34px rgba(15, 140, 125, 0.42);
}

.btn-light {
  color: #2a3160;
  background-color: #ffffff;
  border: 1.5px solid #d8e0ea;
}

.btn-light:hover {
  transform: translateY(-3px);
  border-color: #9fb6cf;
  box-shadow: 0 14px 28px rgba(45, 75, 115, 0.14);
}

.btn-outline {
  color: #2a6cb2;
  border: 1.5px solid #9fb6cf;
  background-color: transparent;
}

.btn-outline:hover {
  background-color: #e4edf5;
  transform: translateY(-3px);
}

.btn-lg {
  padding: 17px 34px;
  font-size: 17px;
  border-radius: 18px;
}

.btn-block {
  width: 100%;
}

.btn .arrow-shift {
  transition: transform 0.25s ease;
}

.btn:hover .arrow-shift {
  transform: translateX(4px);
}

/* ---------- 顶部导航（通栏，两端到浏览器边缘） ---------- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  transition: background-color 0.3s ease;
  background-color: rgba(255, 255, 255, 0.88);
  border: none;
  border-bottom: 1px solid rgba(210, 219, 232, 0.9);
  border-radius: 0;
  box-shadow: 0 5px 20px rgba(30, 55, 90, 0.03);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: box-shadow 0.3s ease, height 0.3s ease, background-color 0.3s ease;
}
.site-nav.scrolled {
/*  height: 74px; */
  background-color: rgba(255, 255, 255, 0.88);
  box-shadow: 0 10px 20px rgba(20, 45, 80, 0.16);
}

.nav-inner {
  padding: 0;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo img {
  height: 30px;
  width: auto;
}

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

.nav-link {
  font-size: 16px;
  font-weight: 500;
  color: #4a5178;
  padding: 6px 24px;
  border-radius:10px;
  transition: color 0.25s ease, background-color 0.25s ease;
}

.nav-link:hover {
  color: #40c62d;
  background-color: #e7eff6;
}

.nav-link.active {
  color: #ffffff;
  background: linear-gradient(135deg, #05a4fa, #40c62d);
  /* box-shadow: 0 8px 18px rgba(30, 90, 150, 0.32); */
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  color: #2a3160;
}

.nav-toggle:hover {
  background-color: #e7eff6;
}

.nav-toggle svg {
  width: 26px;
  height: 26px;
}

/* ---------- 移动端抽屉 ---------- */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(20, 40, 70, 0.45);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 95;
}

.drawer-backdrop.show {
  opacity: 1;
  visibility: visible;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 340px;
  max-width: 86vw;
  background-color: #ffffff;
  z-index: 96;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  padding: 28px;
  box-shadow: -20px 0 50px rgba(20, 40, 70, 0.18);
}

.drawer.show {
  transform: translateX(0);
}

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
}

.drawer-head img {
  height: 25px;
}

.drawer-close {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #5a6188;
}

.drawer-close:hover {
  background-color: #e7eff6;
  color: #2a6cb2;
}

.drawer-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.drawer-link {
  font-size: 17px;
  font-weight: 600;
  color: #3d4470;
  padding: 14px 18px;
  border-radius: 16px;
  transition: color 0.25s ease, background-color 0.25s ease;
}

.drawer-link:hover {
  background-color: #e7eff6;
  color: #2a6cb2;
}

.drawer-link.active {
  color: #2a6cb2;
  background-color: #e4edf5;
}

.drawer-foot {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid #e7edf3;
  font-size: 14px;
  color: #7a81a6;
}

.drawer-foot p {
  margin-bottom: 6px;
}

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  padding: 150px 0 90px;
  background: linear-gradient(135deg, #e7f0f7 0%, #e8f0f7 45%, #f6f0e4 100%);
  overflow: hidden;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
}

.hero-blob-1 {
  width: 460px;
  height: 460px;
  top: -160px;
  right: -120px;
  background-color: rgba(70, 110, 160, 0.4);
}

.hero-blob-2 {
  width: 380px;
  height: 380px;
  bottom: -150px;
  left: -110px;
  background-color: rgba(210, 150, 90, 0.35);
}

.hero-blob-3 {
  width: 300px;
  height: 300px;
  top: 40%;
  left: 42%;
  background-color: rgba(50, 160, 140, 0.25);
}

.hero-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(70, 100, 140, 0.16) 1.4px, transparent 1.4px);
  background-size: 34px 34px;
  opacity: 0.55;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14.5px;
  font-weight: 700;
  color: #2474a8;
  background-color: #ffffff;
  border: 1px solid #d4e0ea;
  border-radius: 999px;
  padding: 9px 20px;
  box-shadow: 0 10px 24px rgba(40, 100, 150, 0.14);
  margin-bottom: 28px;
}

.hero-badge svg {
  width: 17px;
  height: 17px;
  color: #dfa12e;
}

.hero-title {
  font-size: 62px;
  line-height: 1.12;
  letter-spacing: -1px;
  margin-bottom: 26px;
}

.hero-title .type-line {
  display: block;
}

.hero-title .type-highlight {
  position: relative;
  display: inline-block;
  color: #1677ff;
}

.hero-title .type-underline {
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 12px;
}

.type-cursor {
  display: inline-block;
  width: 4px;
  height: 0.92em;
  margin-left: 5px;
  background: linear-gradient(#2a6cb2, #2f8fbe);
  border-radius: 3px;
  vertical-align: -0.08em;
  animation: cursorBlink 0.9s step-end infinite;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-sub {
  font-size: 18.5px;
  color: #545c85;
  max-width: 590px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 42px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
}

.hero-point {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: #3d4470;
}

.hero-point .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1f5a94, #2f8fbe);
}

.hero-point strong {
  color: #1d2347;
}

.hero-copy {
  min-width: 0;
}

/* Hero 表单卡 */
.hero-form-card {
  background-color: #ffffff;
  border: 1px solid #dce3ec;
  border-radius: 28px;
  padding: 30px 34px;
  box-shadow: 0 26px 60px rgba(50, 80, 120, 0.2);
}

.form-title {
  font-size: 24px;
  margin-bottom: 6px;
}

.form-sub {
  font-size: 14.5px;
  color: #7a81a6;
  margin-bottom: 10px;
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  color: #39406a;
  margin-bottom: 8px;
}

.form-label .req {
  color: #df9a43;
}

.field {
  width: 100%;
  background-color: #f2f6f9;
  border: 1.5px solid #d0dae6;
  border-radius: 14px;
  padding: 13px 16px;
  color: #232a4d;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.field::placeholder {
  color: #a2a9cc;
}

.field:focus {
  outline: none;
  border-color: #5b93c2;
  background-color: #ffffff;
  box-shadow: 0 0 0 4px rgba(60, 120, 170, 0.14);
}

textarea.field {
  resize: vertical;
  min-height: 120px;
}

.field-error {
  border-color: #df8066 !important;
  background-color: #f6f1ee !important;
}

.field-tip {
  display: none;
  font-size: 13px;
  color: #cf5a68;
  margin-top: 6px;
}

.field-tip.show {
  display: block;
}

.form-note {
  font-size: 13px;
  color: #939abd;
  text-align: center;
  margin-top: 14px;
  line-height: 1.6;
}

.form-success {
  display: none;
  text-align: center;
  padding: 34px 16px;
}

.form-success.show {
  display: block;
}

.form-success .success-ring {
  width: 74px;
  height: 74px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2ab57d, #0e9488);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 30px rgba(15, 130, 115, 0.35);
  animation: popIn 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.form-success .success-ring svg {
  width: 38px;
  height: 38px;
  color: #ffffff;
}

@keyframes popIn {
  0% { transform: scale(0.4); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.form-success h4 {
  font-size: 21px;
  margin-bottom: 8px;
}

.form-success p {
  font-size: 15px;
  color: #7a81a6;
}

.form-body.hide {
  display: none;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ---------- 动态图形验证码 ---------- */
.captcha-row {
  display: flex;
  gap: 12px;
  align-items: stretch;
}

.captcha-input {
  flex: 1;
  min-width: 0;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.captcha-canvas {
  flex: 0 0 112px;
  width: 112px;
  height: 46px;
  border-radius: 14px;
  border: 1.5px solid #d0dae6;
  background-color: #eef3f8;
  cursor: pointer;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.captcha-canvas:hover {
  border-color: #5b93c2;
}

.captcha-canvas:focus {
  outline: none;
  border-color: #5b93c2;
  box-shadow: 0 0 0 4px rgba(60, 120, 170, 0.14);
}

/* ---------- 表单提交按钮加载态 ---------- */
.btn.is-loading {
  position: relative;
  pointer-events: none;
  color: transparent;
  opacity: 0.85;
}

.btn.is-loading::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2.5px solid rgba(255, 255, 255, 0.4);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: btnSpin 0.7s linear infinite;
}

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

.btn:disabled {
  cursor: not-allowed;
}

/* ---------- 表单错误提示条 ---------- */
.form-alert {
  display: none;
  margin: 0 0 14px;
  padding: 11px 14px;
  border-radius: 12px;
  font-size: 13.5px;
  line-height: 1.55;
}

.form-alert.show {
  display: block;
  animation: alertIn 0.3s ease;
}

.form-alert-error {
  background-color: #fbeceb;
  color: #c0493f;
  border: 1px solid #f0c4c0;
}

@keyframes alertIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 模型名跑马灯 ---------- */
.marquee {
  background-color: #ffffff;
  border-top: 1px solid #dfe5ee;
  border-bottom: 1px solid #dfe5ee;
  padding: 22px 0;
  overflow: hidden;
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 54px;
  width: max-content;
  animation: marqueeMove 30s linear infinite;
}

.marquee:hover .marquee-track {
  animation-play-state: paused;
}

@keyframes marqueeMove {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.marquee-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: #4a5178;
  white-space: nowrap;
}

.marquee-item .m-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* ---------- 数据统计带 ---------- */
.stats-band {
  background-color: #ffffff;
  border-radius: 28px;
  padding: 48px 30px;
  box-shadow: 0 16px 44px rgba(45, 75, 115, 0.1);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 10%;
  right: -12px;
  height: 80%;
  width: 1.5px;
  background-color: #e6edf3;
}

.stat-num {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 8px;
  background: linear-gradient(120deg, #2a6cb2, #2f8fbe);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-num.coral {
  background: linear-gradient(120deg, #dc6c40, #df9a43);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-num.teal {
  background: linear-gradient(120deg, #0e9488, #2b9fc0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-label {
  font-size: 16px;
  font-weight: 700;
  color: #2a3160;
  margin-bottom: 4px;
}

.stat-note {
  font-size: 13.5px;
  color: #8a91b4;
}

/* ---------- 彩色图标方块 ---------- */
.icon-tile {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-tile svg {
  width: 29px;
  height: 29px;
}

.tile-indigo {
  color: #2a6cb2;
  background-color: #e4edf5;
  border: 1px solid #c7d8e8;
}

.tile-purple {
  color: #2f8fbe;
  background-color: #e7eff6;
  border: 1px solid #c5d7e8;
}

.tile-pink {
  color: #c4663f;
  background-color: #f8ede3;
  border: 1px solid #ecd5c0;
}

.tile-coral {
  color: #cf5e38;
  background-color: #f7ece2;
  border: 1px solid #efd2bc;
}

.tile-teal {
  color: #0c8a76;
  background-color: #e1f3ed;
  border: 1px solid #bde7dd;
}

.tile-amber {
  color: #c7871e;
  background-color: #faf2de;
  border: 1px solid #f1ddaa;
}

.tile-blue {
  color: #2a83b8;
  background-color: #e3f0f7;
  border: 1px solid #bde0ec;
}

.tile-red {
  color: #d34d50;
  background-color: #fae9e9;
  border: 1px solid #f3d1d1;
}

/* ---------- 标签 chips ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  font-size: 13.5px;
  font-weight: 600;
  border-radius: 999px;
  padding: 6px 14px;
}

.chip-indigo {
  color: #25609e;
  background-color: #e4edf5;
}

.chip-purple {
  color: #2474a8;
  background-color: #e2edf5;
}

.chip-pink {
  color: #bc6a3c;
  background-color: #f6ede3;
}

.chip-coral {
  color: #c65a34;
  background-color: #f8ece2;
}

.chip-teal {
  color: #0a8270;
  background-color: #dff1eb;
}

.chip-amber {
  color: #b67c16;
  background-color: #f7efdb;
}

.chip-blue {
  color: #2275a8;
  background-color: #dfeef6;
}

.chip-soft {
  color: #5a6188;
  background-color: #ebf0f5;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

/* ---------- 业务卡片（链接型） ---------- */
.feature-card {
  position: relative;
  display: block;
  background-color: #ffffff;
  border: 1.5px solid #dfe5ee;
  border-radius: 26px;
  padding: 34px;
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.feature-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 24px 50px rgba(45, 75, 115, 0.16);
}

.feature-card.fc-indigo:hover { border-color: #9db7d3; }
.feature-card.fc-teal:hover { border-color: #a2d6cb; }
.feature-card.fc-pink:hover { border-color: #e5c2a3; }
.feature-card.fc-purple:hover { border-color: #a3c7dd; }
.feature-card.fc-coral:hover { border-color: #ecc0a0; }
.feature-card.fc-amber:hover { border-color: #ebd096; }

.fc-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.fc-head .icon-tile {
  width: 60px;
  height: 60px;
}

.fc-code {
  display: block;
  font-size: 12px;
  letter-spacing: 2px;
  font-weight: 700;
  color: #a0a7c8;
  margin-bottom: 3px;
}

.fc-title {
  font-size: 21px;
}

.fc-arrow {
  position: absolute;
  top: 32px;
  right: 32px;
  font-size: 22px;
  color: #a6b2c6;
  transition: transform 0.3s ease, color 0.3s ease;
}

.feature-card:hover .fc-arrow {
  transform: translateX(5px);
}

.fc-indigo:hover .fc-arrow { color: #2a6cb2; }
.fc-teal:hover .fc-arrow { color: #0c8a76; }
.fc-pink:hover .fc-arrow { color: #c4663f; }
.fc-purple:hover .fc-arrow { color: #2f8fbe; }
.fc-coral:hover .fc-arrow { color: #cf5e38; }
.fc-amber:hover .fc-arrow { color: #c7871e; }

.fc-text {
  font-size: 15.5px;
  color: #5d658c;
  margin-bottom: 22px;
}

/* ---------- 优势卡片 ---------- */
.adv-card {
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 24px;
  padding: 34px;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.adv-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 46px rgba(45, 75, 115, 0.15);
}

.adv-num {
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 18px;
  background: linear-gradient(120deg, #1f5a94, #2f8fbe);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.adv-title {
  font-size: 20px;
  margin-bottom: 12px;
}

.adv-text {
  font-size: 15px;
  color: #626a92;
}

/* ---------- 服务模式对比表 ---------- */
.compare-card {
  background-color: #ffffff;
  border: 1px solid #dce3ec;
  border-radius: 26px;
  overflow: hidden;
  box-shadow: 0 16px 44px rgba(45, 75, 115, 0.1);
}

.compare-scroll {
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  min-width: 860px;
}

.compare-table th {
  background-color: #eff3f7;
  color: #5a6288;
  font-weight: 700;
  padding: 20px 18px;
  text-align: center;
  border-bottom: 1px solid #e2e8f0;
}

.compare-table th.row-head {
  text-align: left;
  min-width: 230px;
}

.compare-table th .recommend-tag {
  display: inline-block;
  font-size: 11.5px;
  color: #ffffff;
  background: linear-gradient(135deg, #1f5a94, #2f8fbe);
  border-radius: 999px;
  padding: 3px 11px;
  margin-left: 7px;
  vertical-align: middle;
}

.compare-table td {
  padding: 17px 18px;
  text-align: center;
  color: #4a5178;
  border-bottom: 1px solid #ebf0f5;
}

.compare-table td.row-head {
  text-align: left;
  font-weight: 600;
  color: #2a3160;
}

.compare-table tbody tr:hover td {
  background-color: #f4f7fa;
}

.compare-table .col-best {
  background-color: #f6f9fc;
}

.mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-weight: 800;
  font-size: 15px;
}

.mark-yes {
  color: #0c875a;
  background-color: #d6efe3;
}

.mark-mid {
  color: #c1841e;
  background-color: #f6ead3;
}

.mark-no {
  color: #aab5c8;
}

.compare-legend {
  text-align: center;
  font-size: 14px;
  color: #8a91b4;
  margin-top: 22px;
}

.compare-note {
  text-align: center;
  font-size: 14px;
  color: #8a91b4;
  margin-top: 26px;
  line-height: 1.8;
}


/* ---------- 资源卡 ---------- */
.resource-card {
  display: block;
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 24px;
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.resource-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 24px 50px rgba(45, 75, 115, 0.16);
}

.resource-media {
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.resource-media.rm-indigo { background: linear-gradient(135deg, #d9e7f2, #e2edf5); }
.resource-media.rm-purple { background: linear-gradient(135deg, #dfeef5, #f5ece1); }
.resource-media.rm-pink { background: linear-gradient(135deg, #f6ede3, #f8f0e6); }

.resource-media svg {
  width: 78px;
  height: 78px;
}

.resource-media .rm-indigo-icon { color: #5b93c2; }
.resource-media .rm-purple-icon { color: #63a6cd; }
.resource-media .rm-pink-icon { color: #e8ad7a; }

.resource-body {
  padding: 26px 28px 30px;
}

.resource-badge {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  color: #2474a8;
  background-color: #e2edf5;
  border-radius: 999px;
  padding: 5px 13px;
  margin-bottom: 13px;
}

.resource-title {
  font-size: 19px;
  margin-bottom: 9px;
}

.resource-text {
  font-size: 14.5px;
  color: #6a7198;
}

/* ---------- FAQ ---------- */
.faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  justify-content: center;
  margin-bottom: 44px;
}

.faq-tab {
  font-size: 15px;
  font-weight: 600;
  color: #5d658c;
  background-color: #ffffff;
  border: 1.5px solid #d7dfe9;
  border-radius: 999px;
  padding: 10px 22px;
  transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.faq-tab:hover {
  border-color: #9fb6cf;
  color: #2a6cb2;
}

.faq-tab.active {
  color: #ffffff;
  background: linear-gradient(135deg, #1f5a94, #2474a8);
  border-color: transparent;
  box-shadow: 0 10px 22px rgba(30, 90, 150, 0.32);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background-color: #ffffff;
  border: 1.5px solid #dfe5ee;
  border-radius: 20px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.faq-item.open {
  border-color: #a4bdd6;
  box-shadow: 0 14px 34px rgba(60, 95, 135, 0.13);
}

.faq-item.filtered-out {
  display: none;
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  text-align: left;
  padding: 24px 28px;
}

.faq-q h3 {
  font-size: 17.5px;
  font-weight: 700;
  color: #232a4d;
}

.faq-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #2474a8;
  background-color: #e2edf5;
  font-size: 22px;
  font-weight: 400;
  transition: transform 0.35s ease, background-color 0.3s ease, color 0.3s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  color: #ffffff;
  background: linear-gradient(135deg, #1f5a94, #2474a8);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-a-inner {
  padding: 0 28px 26px;
  color: #5d658c;
  font-size: 15.5px;
}

.faq-a-inner p {
  margin-bottom: 12px;
}

.faq-a-inner p:last-child {
  margin-bottom: 0;
}

.faq-a-inner ul, .faq-a-inner ol {
  margin: 10px 0 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-a-inner ul {
  list-style: disc;
  padding-left: 22px;
}

.faq-a-inner ol {
  list-style: decimal;
  padding-left: 22px;
}

.faq-a-inner strong {
  color: #2a3160;
}


.btn-white {
  color: #1f5a94;
  background-color: #ffffff;
}

.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 32px rgba(25, 55, 90, 0.25);
}

.btn-ghost-white {
  color: #ffffff;
  border: 1.5px solid rgba(255, 255, 255, 0.55);
}

.btn-ghost-white:hover {
  background-color: rgba(255, 255, 255, 0.14);
  transform: translateY(-3px);
}


/* ---------- 内页页头 ---------- */
.page-hero {
  position: relative;
  padding: 148px 0 76px;
  background: linear-gradient(135deg, #e7f0f7 0%, #e8f0f7 50%, #f6f0e4 100%);
  overflow: hidden;
}

.page-hero .hero-blob-1 { opacity: 0.8; }
.page-hero .hero-blob-2 { opacity: 0.8; }

.page-hero-inner {
  position: relative;
  text-align: center;
}

.page-hero-title {
  font-size: 56px;
  margin-bottom: 20px;
}

.page-hero-sub {
  font-size: 18.5px;
  color: #545c85;
  max-width: 720px;
  margin: 0 auto;
}

.crumbs {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14.5px;
  color: #7a81a6;
  background-color: #ffffff;
  border: 1px solid #d7dfe9;
  border-radius: 999px;
  padding: 8px 20px;
  margin-bottom: 26px;
  box-shadow: 0 8px 20px rgba(45, 75, 115, 0.08);
}

.crumbs a:hover {
  color: #2a6cb2;
}

.crumbs .crumb-current {
  color: #2474a8;
  font-weight: 600;
}

.page-hero-tagline {
  font-size: 17px;
  color: #6a7198;
  margin-bottom: 8px;
}

/* ---------- 服务详情：特性行 ---------- */
.detail-badge {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: #2a6cb2;
  background-color: #e4edf5;
  border-radius: 999px;
  padding: 8px 18px;
  margin-bottom: 24px;
}

.detail-title {
  font-size: 42px;
  margin-bottom: 22px;
}

.detail-lead {
  font-size: 17.5px;
  color: #5d658c;
  margin-bottom: 34px;
  line-height: 1.85;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.feature-row {
  display: flex;
  gap: 18px;
}

.feature-row .icon-tile {
  width: 46px;
  height: 46px;
  border-radius: 14px;
}

.feature-row .icon-tile svg {
  width: 23px;
  height: 23px;
}

.feature-row h4 {
  font-size: 17.5px;
  margin-bottom: 5px;
}

.feature-row p {
  font-size: 14.5px;
  color: #6a7198;
}

/* 规格面板 */
.spec-panel {
  border-radius: 28px;
  padding: 34px;
  border: 1.5px solid;
}

.spec-panel.sp-indigo {
  background: linear-gradient(150deg, #dfeaf4, #eff5f9);
  border-color: #bfd2e4;
}

.spec-panel.sp-teal {
  background: linear-gradient(150deg, #dff1eb, #e6f0f6);
  border-color: #b4dcd2;
}

.spec-panel.sp-pink {
  background: linear-gradient(150deg, #f5ece2, #f7f1e7);
  border-color: #f0e2d2;
}

.spec-panel.sp-purple {
  background: linear-gradient(150deg, #e3edf6, #edf4f8);
  border-color: #bcd4e4;
}

.spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}

.spec-item {
  background-color: #ffffff;
  border-radius: 18px;
  padding: 22px 16px;
  text-align: center;
  box-shadow: 0 8px 22px rgba(45, 75, 115, 0.08);
}

.spec-num {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 4px;
  background: linear-gradient(120deg, #2a6cb2, #2f8fbe);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.spec-label {
  font-size: 13.5px;
  color: #6a7198;
}

.flow-box {
  background-color: #ffffff;
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 8px 22px rgba(45, 75, 115, 0.08);
}

.flow-box-title {
  font-size: 14px;
  font-weight: 700;
  color: #5d658c;
  margin-bottom: 13px;
}

.flow-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.flow-chip {
  font-size: 13.5px;
  font-weight: 600;
  color: #2474a8;
  background-color: #e2edf5;
  border-radius: 10px;
  padding: 6px 13px;
}

.flow-arrow {
  color: #a6b2c6;
  font-size: 15px;
}

/* 迷你对比表 */
.mini-table-wrap {
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid #e2e8f0;
  background-color: #ffffff;
}

.mini-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}

.mini-table th {
  background-color: #eff3f7;
  padding: 15px;
  font-weight: 700;
  color: #5a6288;
  text-align: center;
}

.mini-table th:first-child {
  text-align: left;
}

.mini-table td {
  padding: 14px 15px;
  border-top: 1px solid #ebf0f5;
  text-align: center;
  color: #5d658c;
}

.mini-table td:first-child {
  text-align: left;
}

.mini-table .yes {
  color: #0c875a;
  font-weight: 800;
}

.mini-table .no {
  color: #aab5c8;
}

.spec-panel-title {
  font-size: 21px;
  margin-bottom: 18px;
}

/* 交付标准行 */
.standard-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background-color: #ffffff;
  border-radius: 14px;
  padding: 15px 18px;
  margin-bottom: 11px;
  box-shadow: 0 6px 16px rgba(45, 75, 115, 0.06);
}

.standard-row:last-child {
  margin-bottom: 0;
}

.standard-name {
  font-size: 15px;
  color: #4a5178;
}

.standard-value {
  font-size: 15.5px;
  font-weight: 800;
  color: #bc6a3c;
}

.standard-value.teal { color: #0c8a76; }
.standard-value.indigo { color: #2a6cb2; }

/* 进度条 */
.meter {
  height: 10px;
  background-color: #dce3ec;
  border-radius: 999px;
  overflow: hidden;
}

.meter-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1);
  background: linear-gradient(90deg, #1f5a94, #2f8fbe);
}

.meter-fill.teal {
  background: linear-gradient(90deg, #12a48e, #2b9fc0);
}

.meter-fill.coral {
  background: linear-gradient(90deg, #d47a4c, #df9a43);
}

.meter-block {
  margin-bottom: 22px;
}

.meter-block:last-child {
  margin-bottom: 0;
}

.meter-label {
  display: flex;
  justify-content: space-between;
  font-size: 14.5px;
  margin-bottom: 9px;
}

.meter-label .m-name {
  color: #4a5178;
}

.meter-label .m-value {
  font-weight: 800;
  color: #2474a8;
}

/* ---------- 流程步骤卡 ---------- */
.step-card {
  position: relative;
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 22px;
  padding: 30px 26px;
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.step-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 42px rgba(45, 75, 115, 0.14);
}

.step-watermark {
  position: absolute;
  top: 12px;
  right: 18px;
  font-size: 58px;
  font-weight: 800;
  color: #ecf1f6;
  line-height: 1;
}

.step-code {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
}

.step-title {
  font-size: 19px;
  margin-bottom: 9px;
}

.step-text {
  font-size: 14.5px;
  color: #6a7198;
}

.step-card.s-indigo .step-code { color: #2a6cb2; }
.step-card.s-purple .step-code { color: #2f8fbe; }
.step-card.s-pink .step-code { color: #c4663f; }
.step-card.s-teal .step-code { color: #0c8a76; }
.step-card.s-amber .step-code { color: #c7871e; }
.step-card.s-coral .step-code { color: #cf5e38; }

/* ---------- Dashboard 示意 ---------- */
.dash {
  border-radius: 28px;
  padding: 32px;
  background: linear-gradient(150deg, #dce9f3, #e8f0f6);
  border: 1.5px solid #c1d3e4;
}

.dash-title {
  font-size: 18px;
  margin-bottom: 20px;
}

.dash-title .dash-note-tag {
  font-size: 12.5px;
  font-weight: 500;
  color: #8a91b4;
}

.dash-screen {
  background-color: #ffffff;
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 10px 28px rgba(45, 75, 115, 0.1);
}

.dash-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 15px;
  margin-bottom: 18px;
  border-bottom: 1px solid #ebf0f5;
  font-size: 14.5px;
  color: #6a7198;
}

.dash-row .dash-up {
  font-weight: 800;
  color: #0c875a;
}

.dash-bars {
  height: 110px;
  display: flex;
  align-items: flex-end;
  gap: 9px;
  margin-bottom: 18px;
}

.dash-bar {
  flex: 1;
  border-radius: 7px 7px 0 0;
  background: linear-gradient(180deg, #7facd2, #a4c6de);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.dash-bar:last-child {
  background: linear-gradient(180deg, #1f5a94, #2f8fbe);
}

.dash-minis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid #ebf0f5;
}

.dash-mini {
  text-align: center;
}

.dash-mini .dm-num {
  font-size: 21px;
  font-weight: 800;
  color: #232a4d;
}

.dash-mini .dm-label {
  font-size: 12.5px;
  color: #8a91b4;
}

/* 双引擎面板 */
.dual-panel {
  border-radius: 28px;
  padding: 34px;
  background: linear-gradient(150deg, #e3edf6, #f4ece2);
  border: 1.5px solid #bcd4e4;
}

.dual-title {
  font-size: 19px;
  margin-bottom: 22px;
}

.dual-meter {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.dual-badge {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  font-weight: 800;
  flex-shrink: 0;
}

.dual-badge.db-s { color: #2a6cb2; background-color: #d9e7f2; }
.dual-badge.db-g { color: #2f8fbe; background-color: #dfeef5; }
.dual-badge.db-p { color: #0c875a; background-color: #d6efe3; }

.dual-meter .meter {
  flex: 1;
}

.dual-name {
  width: 52px;
  font-size: 14px;
  color: #5d658c;
  text-align: right;
}

.dual-result {
  margin-top: 22px;
  background-color: #ffffff;
  border-radius: 16px;
  padding: 18px;
  text-align: center;
  box-shadow: 0 8px 22px rgba(45, 75, 115, 0.08);
}

.dual-result .dr-num {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(120deg, #2a6cb2, #2f8fbe);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.dual-result .dr-label {
  font-size: 13.5px;
  color: #8a91b4;
}

.dual-side {
  background-color: #ffffff;
  border-radius: 18px;
  padding: 22px;
  border: 1px solid #e2e8f0;
}

.dual-side-title {
  font-size: 16px;
  margin-bottom: 10px;
}

.dual-side-title.purple { color: #2474a8; }
.dual-side-title.pink { color: #bc6a3c; }

.dual-side ul {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 14px;
  color: #6a7198;
}

/* 质检步骤 */
.qstep-card {
  display: flex;
  align-items: center;
  gap: 18px;
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 18px;
  padding: 22px 24px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.qstep-card:hover {
  transform: translateX(6px);
  box-shadow: 0 14px 30px rgba(45, 75, 115, 0.12);
}

.qstep-no {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  flex-shrink: 0;
}

.qstep-no.n1 { color: #2a6cb2; background-color: #d9e7f2; }
.qstep-no.n2 { color: #2f8fbe; background-color: #dfeef5; }
.qstep-no.n3 { color: #c4663f; background-color: #f8ede3; }

.qstep-card h4 {
  font-size: 17px;
  margin-bottom: 4px;
}

.qstep-card p {
  font-size: 14px;
  color: #6a7198;
}

.qsteps {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* 长期面板 */
.long-panel {
  border-radius: 28px;
  padding: 34px;
  background: linear-gradient(150deg, #f8f0dc, #f8f2e8);
  border: 1.5px solid #ebd7a8;
}

.long-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 20px;
}

.long-item {
  background-color: #ffffff;
  border-radius: 16px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 8px 20px rgba(160, 120, 40, 0.1);
}

.long-item .li-num {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(120deg, #cc8322, #dc6c40);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.long-item .li-label {
  font-size: 13.5px;
  color: #6a7198;
}

.long-checks {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.long-check {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #ffffff;
  border-radius: 12px;
  padding: 12px 18px;
  font-size: 14.5px;
  color: #4a5178;
}

.long-check .lc-yes {
  color: #0c875a;
  font-weight: 800;
}

/* ---------- 书籍页 ---------- */
.book-hero {
  position: relative;
  padding: 140px 0 90px;
  background: linear-gradient(135deg, #e7f0f7 0%, #e7eff6 50%, #f5ece2 100%);
  overflow: hidden;
}

.book-cover-box {
  position: relative;
  display: flex;
  justify-content: center;
}

.book-cover-card {
  position: relative;
  width: 340px;
  max-width: 80vw;
  aspect-ratio: 600 / 820;
  border-radius: 16px 10px 10px 16px;
  overflow: hidden;
  box-shadow: 0 34px 70px rgba(30, 80, 120, 0.35);
  animation: bookFloat 5s ease-in-out infinite;
}

@keyframes bookFloat {
  0%, 100% { transform: translateY(0) rotate(-1.5deg); }
  50% { transform: translateY(-14px) rotate(-1.5deg); }
}

.book-cover-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.book-cover-glow {
  position: absolute;
  inset: -30px;
  background: radial-gradient(circle, rgba(60, 110, 150, 0.28), transparent 70%);
  z-index: -1;
}

.book-ribbon {
  position: absolute;
  top: -12px;
  right: calc(50% - 185px);
  font-size: 13px;
  font-weight: 800;
  color: #ffffff;
  background: linear-gradient(135deg, #e3a64e, #c4663f);
  border-radius: 999px;
  padding: 8px 18px;
  transform: rotate(8deg);
  box-shadow: 0 12px 26px rgba(200, 120, 70, 0.4);
}


@keyframes livePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.book-title {
  font-size: 54px;
  margin-bottom: 18px;
}

.book-desc {
  font-size: 16.5px;
  color: #5d658c;
  line-height: 1.85;
  margin-bottom: 24px;
}

.book-version-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.version-chip {
  font-size: 14px;
  font-weight: 700;
  color: #2474a8;
  background-color: #e2edf5;
  border-radius: 11px;
  padding: 7px 15px;
}

.version-text {
  font-size: 14.5px;
  color: #7a81a6;
}

.price-box {
  border-radius: 20px;
  padding: 24px 26px;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #e2edf5, #f4ece2);
  border: 1.5px solid #c7d9e7;
}

.price-row {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 8px;
}

.price-now {
  font-size: 46px;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(120deg, #2a6cb2, #2f8fbe);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.price-old {
  font-size: 19px;
  color: #a2a9cc;
  text-decoration: line-through;
  padding-bottom: 3px;
}

.price-words {
  font-size: 13px;
  font-weight: 700;
  color: #bc6a3c;
  background-color: #f7ede3;
  border-radius: 8px;
  padding: 4px 11px;
  margin-bottom: 5px;
}

.price-note {
  font-size: 13.5px;
  color: #6f8aa6;
}

.book-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.book-info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 11px;
}

.book-info-item {
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 14px;
  padding: 13px;
  text-align: center;
}

.book-info-item .bi-label {
  font-size: 12.5px;
  color: #939abd;
  margin-bottom: 3px;
}

.book-info-item .bi-value {
  font-size: 14.5px;
  font-weight: 700;
  color: #2a3160;
}

/* 目录 */
.toc-chapter {
  margin-bottom: 42px;
}

.toc-chapter:last-child {
  margin-bottom: 0;
}

.toc-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.toc-badge {
  font-size: 13.5px;
  font-weight: 800;
  border-radius: 12px;
  padding: 8px 16px;
  flex-shrink: 0;
}

.toc-badge.tb-1 { color: #2a6cb2; background-color: #deeaf4; }
.toc-badge.tb-2 { color: #bc6a3c; background-color: #f5ece1; }
.toc-badge.tb-3 { color: #b67c16; background-color: #f7efdb; }
.toc-badge.tb-4 { color: #0c8a76; background-color: #dff1eb; }

.toc-title {
  font-size: 21px;
}

.toc-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-left: 20px;
  padding-left: 22px;
  border-left: 2px solid;
}

.toc-chapter.tc-1 .toc-items { border-color: #c7d8e8; }
.toc-chapter.tc-2 .toc-items { border-color: #ecd5c0; }
.toc-chapter.tc-3 .toc-items { border-color: #f1ddaa; }
.toc-chapter.tc-4 .toc-items { border-color: #bde7dd; }

.toc-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 14px 18px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.toc-item:hover {
  transform: translateX(4px);
}

.toc-chapter.tc-1 .toc-item:hover { border-color: #9db7d3; }
.toc-chapter.tc-2 .toc-item:hover { border-color: #e5c2a3; }
.toc-chapter.tc-3 .toc-item:hover { border-color: #ebd096; }
.toc-chapter.tc-4 .toc-item:hover { border-color: #a2d6cb; }

.toc-no {
  font-size: 13px;
  font-weight: 700;
  color: #a2a9cc;
  flex-shrink: 0;
}

.toc-name {
  font-size: 15px;
  font-weight: 600;
  color: #39406a;
}

/* 作者卡 */
.author-card {
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 28px;
  padding: 44px;
  box-shadow: 0 16px 44px rgba(45, 75, 115, 0.1);
}

.author-name-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 20px;
}

.author-name {
  font-size: 30px;
}

.author-role {
  font-size: 13.5px;
  font-weight: 600;
  color: #2474a8;
  background-color: #e2edf5;
  border-radius: 999px;
  padding: 6px 16px;
}

.author-card p {
  font-size: 15.5px;
  color: #5d658c;
  margin-bottom: 14px;
  line-height: 1.9;
}

.author-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.author-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

/* 购买须知 */
.notice-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.notice-item {
  display: flex;
  gap: 17px;
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 18px;
  padding: 24px 26px;
}

.notice-no {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  flex-shrink: 0;
}

.notice-no.nn-1, .notice-no.nn-2 {
  color: #0c8a76;
  background-color: #dff1eb;
}

.notice-no.nn-3 {
  color: #b67c16;
  background-color: #f7efdb;
}

.notice-item h4 {
  font-size: 16.5px;
  margin-bottom: 5px;
}

.notice-item p {
  font-size: 14.5px;
  color: #6a7198;
}

.notice-item .mono {
  font-family: Consolas, "Courier New", monospace;
  color: #2474a8;
  font-weight: 700;
}

/* 版权声明卡 */
.copyright-card {
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 24px;
  padding: 40px;
}

.copyright-card .cc-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.copyright-card .cc-head svg {
  width: 25px;
  height: 25px;
  color: #2f8fbe;
}

.copyright-card .cc-label {
  font-size: 13px;
  letter-spacing: 2px;
  font-weight: 700;
  color: #a2a9cc;
}

.copyright-card h3 {
  font-size: 23px;
  margin-bottom: 16px;
}

.copyright-card p {
  font-size: 15px;
  color: #5d658c;
  margin-bottom: 12px;
  line-height: 1.9;
}

.copyright-card .cc-foot {
  font-size: 13px;
  color: #939abd;
  padding-top: 12px;
  margin-top: 16px;
  border-top: 1px solid #ebf0f5;
}

/* ---------- 弹窗 ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background-color: rgba(20, 40, 70, 0.55);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  width: 100%;
  max-width: 460px;
  background-color: #ffffff;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 34px 80px rgba(20, 40, 70, 0.35);
  transform: translateY(26px) scale(0.96);
  transition: transform 0.35s cubic-bezier(0.34, 1.4, 0.64, 1);
}

.modal-overlay.show .modal-box {
  transform: translateY(0) scale(1);
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background-color: #f1f5f9;
  border-bottom: 1px solid #e2e8f0;
}

.modal-head-title {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 15.5px;
  font-weight: 700;
  color: #2a3160;
}

.modal-head-title .mh-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: #12a48e;
}

.modal-head-title .mh-code {
  font-size: 12px;
  letter-spacing: 1.5px;
  color: #a2a9cc;
  font-weight: 600;
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #7a81a6;
}

.modal-close:hover {
  background-color: #e5ebf2;
  color: #2a6cb2;
}

.modal-close svg {
  width: 20px;
  height: 20px;
}

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

.modal-price {
  text-align: center;
  margin-bottom: 20px;
}

.modal-price .mp-now {
  font-size: 34px;
  font-weight: 800;
  background: linear-gradient(120deg, #2a6cb2, #2f8fbe);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.modal-price .mp-old {
  font-size: 15px;
  color: #a2a9cc;
  text-decoration: line-through;
  margin-left: 8px;
}

.modal-price p {
  font-size: 13.5px;
  color: #8a91b4;
}

.modal-qr {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.modal-qr .qr-white {
  background-color: #ffffff;
  border-radius: 18px;
  padding: 14px;
  box-shadow: 0 12px 30px rgba(45, 75, 115, 0.14);
  border: 1px solid #ebf0f5;
}

.modal-qr img {
  width: 210px;
  height: 210px;
  object-fit: contain;
}

.modal-qr.qr-small img {
  width: 178px;
  height: 178px;
}

.modal-steps {
  background-color: #f1f5f9;
  border-radius: 16px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 13.5px;
  color: #5d658c;
}

.modal-steps .ms-row {
  display: flex;
  gap: 9px;
  line-height: 1.6;
}

.modal-steps .ms-no {
  color: #2474a8;
  font-weight: 800;
  flex-shrink: 0;
}

.modal-steps .ms-warn {
  color: #c1841e;
}

.modal-steps .mono {
  font-family: Consolas, "Courier New", monospace;
  color: #2474a8;
  font-weight: 700;
}

.modal-lead {
  text-align: center;
  font-size: 14.5px;
  color: #6a7198;
  margin-bottom: 20px;
}

.copy-line {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 15px;
  padding: 12px 15px;
  margin-bottom: 11px;
}

.copy-line:last-child {
  margin-bottom: 0;
}

.copy-line .cl-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.copy-line .cl-icon.green {
  color: #0c8a76;
  background-color: #dff1eb;
}

.copy-line .cl-icon.blue {
  color: #2a83b8;
  background-color: #e3f0f7;
}

.copy-line .cl-icon svg {
  width: 20px;
  height: 20px;
}

.copy-line .cl-body {
  flex: 1;
  min-width: 0;
}

.copy-line .cl-label {
  font-size: 12px;
  color: #939abd;
}

.copy-line .cl-value {
  font-size: 15px;
  font-weight: 700;
  font-family: Consolas, "Courier New", monospace;
  color: #2a3160;
}

.copy-btn {
  font-size: 13px;
  font-weight: 700;
  color: #2474a8;
  background-color: #e2edf5;
  border-radius: 10px;
  padding: 8px 15px;
  flex-shrink: 0;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.copy-btn:hover {
  background-color: #c4d6e6;
}

.copy-btn.copied {
  color: #ffffff;
  background: linear-gradient(135deg, #2ab57d, #0e9488);
}

.modal-work-time {
  text-align: center;
  font-size: 13px;
  color: #939abd;
  margin-top: 16px;
}

/* ---------- 联系页 ---------- */
.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.info-card {
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 20px;
  padding: 17px 26px;
  display: flex;
  gap: 17px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-card:hover {
  transform: translateX(5px);
  box-shadow: 0 14px 30px rgba(45, 75, 115, 0.12);
}

.info-card .icon-tile {
  width: 52px;
  height: 52px;
}

.info-card h4 {
  font-size: 13px;
  letter-spacing: 1.5px;
  color: #939abd;
  margin-bottom: 4px;
}

.info-card .info-main {
  font-size: 18px;
  font-weight: 700;
  color: #232a4d;
}

.info-card .info-main a:hover {
  color: #2a6cb2;
}

.info-card .info-sub {
  font-size: 13.5px;
  color: #8a91b4;
  margin-top: 3px;
}

.qr-card .qr-box {
  display: flex;
  justify-content: center;
  margin-top: 16px;
}

.qr-card .qr-box .qr-white {
  background-color: #ffffff;
  border-radius: 16px;
  padding: 12px;
  box-shadow: 0 10px 24px rgba(45, 75, 115, 0.12);
  border: 1px solid #ebf0f5;
}

.qr-card .qr-box img {
  width: 128px;
  height: 128px;
  object-fit: contain;
}

.contact-form-card {
  position: relative;
  border-radius: 28px;
  padding: 44px 42px;
  background-color: #ffffff;
  border: 1.5px solid #d7dfe9;
  box-shadow: 0 22px 54px rgba(45, 75, 115, 0.14);
  overflow: hidden;
}

.contact-form-card .cf-deco-1 {
  position: absolute;
  width: 240px;
  height: 240px;
  top: -100px;
  right: -80px;
  border-radius: 50%;
  background-color: rgba(43, 143, 206, 0.12);
  filter: blur(50px);
}

.contact-form-card .cf-deco-2 {
  position: absolute;
  width: 220px;
  height: 220px;
  bottom: -90px;
  left: -70px;
  border-radius: 50%;
  background-color: rgba(70, 120, 165, 0.12);
  filter: blur(50px);
}

.contact-form-head {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 30px;
}

.contact-form-head .cfh-code {
  font-size: 12.5px;
  letter-spacing: 2px;
  font-weight: 700;
  color: #a2a9cc;
  margin-bottom: 5px;
}

.contact-form-head h2 {
  font-size: 29px;
}

.rapid-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: #0c8a76;
  background-color: #dff1eb;
  border-radius: 11px;
  padding: 8px 14px;
}

.rapid-tag .rt-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #12a48e;
  animation: livePulse 1.6s ease-in-out infinite;
}

.contact-form {
  position: relative;
}

.form-perks {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 24px;
  margin-top: 18px;
  font-size: 13.5px;
  color: #7a81a6;
}

.form-perks span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.form-perks .fp-check {
  color: #12a48e;
  font-weight: 800;
}

/* ---------- 关于页 ---------- */
.who-text p {
  font-size: 16.5px;
  color: #5d658c;
  margin-bottom: 18px;
  line-height: 1.9;
}

.who-text p:last-child {
  margin-bottom: 0;
}

.who-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-top: 26px;
}

.problem-card {
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 22px;
  padding: 32px 30px;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.problem-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 42px rgba(45, 75, 115, 0.14);
}

.problem-card .icon-tile {
  margin-bottom: 18px;
}

.problem-card h3 {
  font-size: 20px;
  margin-bottom: 11px;
}

.problem-card p {
  font-size: 14.5px;
  color: #6a7198;
  margin-bottom: 14px;
}

.problem-card .solution {
  font-size: 14px;
  font-weight: 600;
}

.problem-card.pc-indigo .solution { color: #2a6cb2; }
.problem-card.pc-pink .solution { color: #bc6a3c; }
.problem-card.pc-purple .solution { color: #2474a8; }
.problem-card.pc-teal .solution { color: #0c8a76; }

.principle-card {
  text-align: center;
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 22px;
  padding: 34px 26px;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.principle-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 42px rgba(45, 75, 115, 0.14);
}

.principle-num {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 14px;
  background: linear-gradient(120deg, #1f5a94, #2f8fbe);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.principle-card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.principle-card p {
  font-size: 14px;
  color: #6a7198;
}

.local-row {
  display: flex;
  gap: 16px;
  background-color: #ffffff;
  border: 1px solid #dfe5ee;
  border-radius: 18px;
  padding: 22px 24px;
  margin-bottom: 14px;
}

.local-row:last-child {
  margin-bottom: 0;
}

.local-row .icon-tile {
  width: 46px;
  height: 46px;
  border-radius: 14px;
}

.local-row h4 {
  font-size: 16.5px;
  margin-bottom: 4px;
}

.local-row p {
  font-size: 14px;
  color: #6a7198;
}

.local-text p {
  font-size: 16px;
  color: #5d658c;
  margin-bottom: 18px;
  line-height: 1.9;
}

.expert-avatar {
  border-radius: 30px;
  aspect-ratio: 1;
  max-width: 380px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(150deg, #dfeef5, #f8ede3);
  border: 1.5px solid #bcd4e4;
}

.expert-avatar svg {
  width: 150px;
  height: 150px;
  color: #74a9c9;
}

.qualify-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.qualify-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 0;
  border-bottom: 1px solid #e2e8f0;
  font-size: 15px;
}

.qualify-row:last-child {
  border-bottom: none;
}

.qualify-row .q-label {
  color: #8a91b4;
  flex-shrink: 0;
}

.qualify-row .q-value {
  text-align: left justify;
  font-weight: 700;
  color: #2a3160;
}

.qualify-row .q-value.muted {
  font-weight: 500;
  font-size: 14px;
  color: #6a7198;
}

.license-box {
  border-radius: 22px;
  overflow: hidden;
  border: 1.5px solid #d7dfe9;
  box-shadow: 0 18px 44px rgba(45, 75, 115, 0.14);
  background-color: #ffffff;
}

.license-box img {
  width: 100%;
}

.license-caption {
  padding: 14px 18px;
  font-size: 13.5px;
  color: #8a91b4;
  text-align: center;
  border-top: 1px solid #ebf0f5;
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  background: #12151b;
  padding: 72px 0 30px;
  overflow: hidden;
}

.footer-blob {
  display: none;
}

.footer-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 44px;
}

.footer-brand .footer-logo {
  height: 26px;
  width: auto;
  margin-bottom: 20px;
}


.footer-desc {
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 24px;
  max-width: 400px;
}

.social-row {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 42px;
  height: 42px;
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.14);
  transition: background-color 0.25s ease, transform 0.25s ease;
}

.social-link:hover {
  background-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-3px);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.footer-col {
  min-width: 0;
}

.footer-title {
  color: #ffffff;
  font-size: 16.5px;
  margin-bottom: 20px;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.footer-link {
  color: rgba(255, 255, 255, 0.78);
  font-size: 14.5px;
  transition: color 0.25s ease, transform 0.25s ease;
  display: inline-block;
}

.footer-link:hover {
  color: #ffffff;
  transform: translateX(4px);
}

.footer-divider {
  position: relative;
  height: 1px;
  margin: 46px 0 26px;
  background: rgba(255, 255, 255, 0.12);
}

.footer-bottom {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.copyright {
  color: rgba(255, 255, 255, 0.72);
  font-size: 13.5px;
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.78);
}

.footer-meta a:hover {
  color: #ffffff;
}

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 28px;
  bottom: 100px;
  width: 52px;
  height: 52px;
  border-radius: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  background: linear-gradient(135deg, #05a4fa, #40c62d);
  box-shadow: 0 14px 30px rgba(30, 90, 150, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
  z-index: 80;
}

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

.back-top:hover {
  transform: translateY(-4px);
}

.back-top svg {
  width: 24px;
  height: 24px;
}

/* ---------- 滚动渐显 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-38px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-right {
  opacity: 0;
  transform: translateX(38px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible, .reveal-left.visible, .reveal-right.visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* ---------- 工具类 ---------- */
.mobile-only {
  display: none;
}

.desktop-only {
  display: block;
}


/* ============================================================
   品牌优化补充：差异化布局 · 深色特色板块
   （稳重藏青 + 钢蓝/深青，渐变保留，无紫色）
   ============================================================ */

/* Hero 荣誉徽章：沉稳金调 */
.hero-badge {
  color: #173d70;
  border-color: #e6d8b4;
  background: linear-gradient(135deg, #fffdf6, #ffffff);
  box-shadow: 0 10px 26px rgba(150, 120, 50, 0.16);
}

/* 首页：深色数据统计带 */
.stats-band.stats-dark {
  background: linear-gradient(135deg, #14375f 0%, #1d5483 58%, #266894 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 26px 60px rgba(20, 50, 90, 0.32);
}
.stats-dark .stat-item::after { background-color: rgba(255, 255, 255, 0.14); }
.stats-dark .stat-num {
  background: linear-gradient(120deg, #ffffff, #bcd9ee);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stats-dark .stat-num.coral {
  background: linear-gradient(120deg, #f2d488, #dfa12e);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stats-dark .stat-num.teal {
  background: linear-gradient(120deg, #8fdccb, #2bb5a0);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stats-dark .stat-label { color: #ffffff; }
.stats-dark .stat-note { color: rgba(255, 255, 255, 0.62); }

/* 关于页：痛点 / 原则 / 步骤卡交替底色 */
.problem-card:nth-child(even) { background-color: #f5f9fc; }
.principle-card:nth-child(odd) { background-color: #f5f9fc; }
.step-card:nth-child(even) { background-color: #f5f9fc; }



/* 通栏导航在平板 / 手机下的内边距 */
@media (max-width: 1024px) {
  .nav-bar { padding-left: 28px; padding-right: 28px; }
}
@media (max-width: 768px) {
  .nav-bar { padding-left: 22px; padding-right: 22px; }
}

/* ============================================================
   响应式
   ============================================================ */

/* ---------- 大屏笔记本 ≤1280 ---------- */
@media (max-width: 1280px) {
  .hero-title {
    font-size: 52px;
  }
  .book-title {
    font-size: 46px;
  }
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 36px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

/* ---------- 平板横 / 小笔记本 ≤1024 ---------- */
@media (max-width: 1024px) {
  .wrap, .wrap-md {
    padding-left: 28px;
    padding-right: 28px;
  }
  .section {
    padding: 76px 0;
  }
  .nav-links {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .hero {
    padding: 126px 0 70px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-form-card {
    max-width: 560px;
    margin: 0 auto;
    width: 100%;
  }
  .split {
    grid-template-columns: 1fr;
    gap: 42px;
  }
  .contact-split {
    grid-template-columns: 1fr;
  }
 
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }
  .stats-band {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px 20px;
  }
  .stat-item:not(:last-child)::after {
    display: none;
  }
  .page-hero {
    padding: 124px 0 60px;
  }
  .page-hero-title {
    font-size: 46px;
  }
  .book-hero {
    padding: 120px 0 70px;
  }
  .book-ribbon {
    right: calc(50% - 160px);
  }
  .qualify-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .contact-form-card {
    padding: 36px 30px;
  }
}

/* ---------- 平板竖 ≤768 ---------- */
@media (max-width: 768px) {
  .wrap, .wrap-md {
    padding-left: 22px;
    padding-right: 22px;
  }
  .wrap-sm {
    padding-left: 22px;
    padding-right: 22px;
  }
  .section {
    padding: 64px 0;
  }
  .section-head {
    margin-bottom: 44px;
  }
  .section-title {
    font-size: 31px;
  }
  .hero-title {
    font-size: 42px;
  }
  .hero-sub {
    font-size: 17px;
	text-align: justify
  }
  .hero-actions .btn {
    width: 100%;
  }
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-5 {
    grid-template-columns: repeat(2, 1fr);
  }
 
  .page-hero-title {
    font-size: 38px;
  }
  .page-hero-sub {
    font-size: 17px;
  }
  .detail-title {
    font-size: 32px;
  }
  .form-row-2 {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .toc-items {
    grid-template-columns: 1fr;
    margin-left: 0;
  }
  .book-info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .book-actions .btn {
    width: 100%;
  }
  .book-title {
    font-size: 38px;
  }
  .author-card {
    padding: 32px 26px;
  }
  .author-actions .btn {
    width: 100%;
  }
  .copyright-card {
    padding: 30px 24px;
  }
  .site-footer {
    padding: 52px 0 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .footer-brand {
    grid-column: auto;
  }
  .footer-col {
    display: none;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .faq-q {
    padding: 20px 22px;
  }
  .faq-a-inner {
    padding: 0 22px 22px;
  }
  .contact-form-head {
    flex-direction: column;
    gap: 14px;
  }
  .spec-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- 手机 ≤560 ---------- */
@media (max-width: 560px) {
  .wrap, .wrap-md {
    padding-left: 18px;
    padding-right: 18px;
  }
  .wrap-sm {
    padding-left: 18px;
    padding-right: 18px;
  }
  .nav-bar {
    height: 58px;
    padding: 0 16px 0 18px;
  }
  .nav-logo img {
    height: 25px;
  }
  .hero {
    padding: 110px 0 60px;
  }
  .hero-title {
    font-size: 35px;
  }
  .hero-badge {
    font-size: 13px;
    padding: 8px 15px;
  }
  .hero-points {
    gap: 10px 18px;
  }
  .hero-form-card {
    padding: 30px 24px;
    border-radius: 24px;
  }
  .stats-band {
    grid-template-columns: 1fr 1fr;
    padding: 36px 20px;
  }
  .stat-num {
    font-size: 40px;
  }
  .card {
    padding: 28px 24px;
  }
  .feature-card {
    padding: 28px 24px;
  }
  .fc-arrow {
    display: none;
  }
  .grid-4, .grid-5 {
    grid-template-columns: 1fr;
  }
  .page-hero {
    padding: 110px 0 52px;
  }
  .page-hero-title {
    font-size: 33px;
  }
  .book-hero {
    padding: 108px 0 60px;
  }
  .book-cover-card {
    width: 270px;
  }
  .book-ribbon {
    right: calc(50% - 135px);
  }
  .price-now {
    font-size: 39px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .back-top {
    right: 18px;
    bottom: 18px;
    width: 47px;
    height: 47px;
  }
  .modal-qr img {
    width: 180px;
    height: 180px;
  }
  .modal-qr.qr-small img {
    width: 158px;
    height: 158px;
  }
  .contact-form-card {
    padding: 30px 22px;
  }
  .info-card {
    flex-direction: column;
  }
  .long-top {
    grid-template-columns: 1fr;
  }
}