/* ==========================================================================
   星客私域官网 - 全局样式
   设计规范取自原站：主色 #1e50ae，标题蓝 #034dff，页脚 #2c2c2c
   ========================================================================== */

:root {
  --blue: #1e50ae;
  --blue-title: #034dff;
  --ink: #212121;
  --text: #333333;
  --muted: #777777;
  --muted-2: #999999;
  --line: #e8ebf5;
  --bg: #ffffff;
  --lav: #f2f4fb;
  --footer: #2c2c2c;
  --header-h: 85px;
  --wrap: 1200px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "微软雅黑", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
  font-size: 14px;
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  border: 0;
  vertical-align: middle;
}

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
  font-weight: 400;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------------------------------------------------------------- 顶部导航 */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 200;
  height: var(--header-h);
  background: #fff;
  transition: box-shadow 0.25s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 2px 18px rgba(30, 80, 174, 0.12);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.brand span {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  height: var(--header-h);
}

.nav a {
  position: relative;
  display: block;
  padding: 0 26px;
  line-height: var(--header-h);
  font-size: 14px;
  color: var(--text);
  transition: color 0.2s ease;
}

.nav a:hover,
.nav a.is-active {
  color: var(--blue);
  font-weight: 700;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  font-size: 22px;
  color: var(--blue);
  cursor: pointer;
}

/* -------------------------------------------------------------------- 区块 */
.section {
  position: relative;
  padding: 110px 0;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  overflow: hidden;
}

.section--screen {
  display: flex;
  align-items: center;
  min-height: 100vh;
}

.section--lav {
  background-color: var(--lav);
}

.section--tight {
  padding: 90px 0;
}

.section-title {
  font-size: 26px;
  line-height: 1.5;
  color: var(--blue-title);
  text-align: center;
}

.section-sub {
  margin-top: 6px;
  font-size: 14px;
  color: var(--muted);
  text-align: center;
  letter-spacing: 0.5px;
}

.section-desc {
  max-width: 900px;
  margin: 34px auto 0;
  font-size: 14px;
  line-height: 2;
  color: var(--muted);
  text-align: center;
}

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

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

.section-head--left .section-title,
.section-head--left .section-sub {
  text-align: left;
}

/* ------------------------------------------------------------------ 轮播图 */
.hero {
  position: relative;
  height: 100vh;
  min-height: 560px;
  padding: 0;
  background: #f4f6fc;
}

.hero-track {
  position: relative;
  height: 100%;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.7s ease;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-arrow {
  position: absolute;
  top: 50%;
  z-index: 3;
  width: 44px;
  height: 62px;
  margin-top: -31px;
  border: 0;
  background: rgba(255, 255, 255, 0.75);
  color: var(--blue);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s ease;
}

.hero-arrow:hover {
  background: #fff;
}

.hero-arrow--prev {
  left: 0;
}

.hero-arrow--next {
  right: 0;
}

.hero-dots {
  position: absolute;
  right: 34px;
  top: 50%;
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transform: translateY(-50%);
}

.hero-dots button {
  width: 10px;
  height: 10px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #c6cee6;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.hero-dots button.is-active {
  background: #fff;
  box-shadow: 0 0 0 2px var(--blue);
  transform: scale(1.15);
}

/* ---------------------------------------------------------------- 通用布局 */
.split {
  display: flex;
  align-items: center;
  gap: 60px;
}

.split__text {
  flex: 1 1 46%;
  min-width: 0;
}

.split__media {
  flex: 1 1 54%;
  min-width: 0;
  text-align: center;
}

.split__media img {
  width: 100%;
  max-width: 640px;
}

.split--reverse {
  flex-direction: row-reverse;
}

/* -------------------------------------------------------------------- 卡片 */
.grid {
  display: grid;
  gap: 40px 30px;
  margin-top: 60px;
}

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

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

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

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

.card {
  text-align: center;
}

.card__icon {
  height: 92px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card__icon img {
  max-height: 84px;
  width: auto;
}

.card__title {
  margin-top: 26px;
  font-size: 20px;
  line-height: 1.5;
  color: var(--ink);
}

.card__desc {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted-2);
}

.card--plain .card__title {
  margin-top: 20px;
}

/* 图文卡片（图片在上，标题在下） */
.photo-card {
  text-align: center;
}

.photo-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 6px 20px rgba(30, 80, 174, 0.08);
}

.photo-card__title {
  margin-top: 22px;
  font-size: 16px;
  color: var(--ink);
}

.photo-card__desc {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted-2);
}

/* -------------------------------------------------------------------- 按钮 */
.btn {
  display: inline-block;
  min-width: 152px;
  padding: 12px 36px;
  border: 0;
  border-radius: 999px;
  background: var(--blue-title);
  color: #fff;
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  background: #0740d4;
  transform: translateY(-1px);
}

.btn-row {
  margin-top: 50px;
  text-align: center;
}

/* ---------------------------------------------------------- 编号流程/步骤 */
.panel-card {
  padding: 34px 30px 32px;
  background: #fff;
  border-radius: 6px;
  box-shadow: 0 12px 34px rgba(30, 80, 174, 0.07);
  text-align: center;
}

.panel-card img {
  width: 100%;
  border-radius: 3px;
}

.panel-card__title {
  margin-top: 30px;
  font-size: 22px;
  color: var(--ink);
}

.panel-card__desc {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.95;
  color: var(--muted-2);
}

/* 图标条目：图标在上，标题 + 描述的紧凑排布 */
.icon-group {
  display: grid;
  gap: 44px 34px;
}

.icon-group--2 {
  grid-template-columns: repeat(2, 1fr);
}

.icon-group--4 {
  grid-template-columns: repeat(4, 1fr);
}

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

.icon-item__icon {
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-item__icon img {
  max-height: 58px;
  width: auto;
}

.icon-item__title {
  margin-top: 24px;
  font-size: 20px;
  color: var(--ink);
}

.icon-item__desc {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted-2);
}

/* 数据看板截图 */
.sol-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
}

.sol-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 11 / 10;
  object-fit: cover;
}

.dash-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 44px 34px;
  margin-top: 54px;
}

.dash-grid img {
  width: 100%;
  border-radius: 4px;
  box-shadow: 0 14px 36px rgba(30, 80, 174, 0.1);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 60px;
}

.step {
  text-align: center;
}

.step__no {
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--blue-title);
}

.step__icon {
  margin-top: 18px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step__icon img {
  max-height: 70px;
  width: auto;
}

.step__title {
  margin-top: 18px;
  font-size: 18px;
  color: var(--ink);
}

.step__desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted-2);
}

/* ------------------------------------------------------------ 圆形玩法标签 */
.circle-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 30px 20px;
  margin-top: 60px;
}

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

.circle-item__badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 112px;
  height: 112px;
  margin: 0 auto;
  border-radius: 50%;
  color: #fff;
  font-size: 19px;
  line-height: 1.25;
  text-align: center;
  padding: 0 12px;
}

.circle-item__title {
  margin-top: 18px;
  font-size: 15px;
  color: var(--ink);
}

.circle-item__desc {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted-2);
}

/* ---------------------------------------------------------------- 客户 Logo */
.logo-wall {
  margin-top: 46px;
  overflow: hidden;
}

.logo-row {
  display: flex;
  align-items: center;
  gap: 66px;
  padding: 12px 0;
  width: max-content;
  animation: logo-marquee 46s linear infinite;
}

.logo-row--reverse {
  animation-direction: reverse;
  animation-duration: 54s;
}

.logo-row img {
  height: 46px;
  width: auto;
  max-width: 130px;
  object-fit: contain;
  filter: none;
  flex: 0 0 auto;
}

@keyframes logo-marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .logo-row {
    animation: none;
    flex-wrap: wrap;
    width: 100%;
    justify-content: center;
    gap: 34px;
  }
}

/* -------------------------------------------------------- 客户案例 logo 墙 */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 34px 14px;
  width: min(100%, 1000px);
  margin: 56px auto 0;
}

.logo-grid img {
  display: block;
  width: 100%;
  height: 63px;
  object-fit: contain;
}

/* -------------------------------------------------------------------- 表单 */
.contact-layout {
  display: flex;
  gap: 46px;
  align-items: stretch;
}

.contact-layout__map {
  flex: 1 1 50%;
  min-width: 0;
}

.contact-layout__form {
  flex: 1 1 50%;
  min-width: 0;
  padding-top: 10px;
}

.map-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 100%;
  min-height: 420px;
  border-radius: 6px;
  overflow: hidden;
  background:
    linear-gradient(0deg, rgba(240, 243, 250, 0.96), rgba(240, 243, 250, 0.4)),
    repeating-linear-gradient(0deg, #e7ebf5 0 1px, transparent 1px 46px),
    repeating-linear-gradient(90deg, #e7ebf5 0 1px, transparent 1px 46px),
    #f5f7fc;
}

.map-card__pin {
  position: absolute;
  left: 50%;
  top: 44%;
  transform: translate(-50%, -100%);
  font-size: 30px;
  line-height: 1;
}

.map-card__body {
  position: relative;
  margin: 16px;
  padding: 18px 20px;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(30, 80, 174, 0.1);
}

.map-card__body h3 {
  font-size: 16px;
  color: var(--ink);
}

.map-card__body p {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
}

.map-card__body a {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  color: var(--blue);
}

/* 真实地图嵌入 */
.map-embed {
  position: relative;
  height: 430px;
  border-radius: 6px;
  overflow: hidden;
  background: #eef1f8;
  box-shadow: 0 10px 30px rgba(30, 80, 174, 0.08);
}

.map-embed iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.map-embed__badge {
  position: absolute;
  left: 16px;
  top: 16px;
  max-width: 74%;
  padding: 12px 16px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.map-embed__badge strong {
  display: block;
  margin-bottom: 2px;
  font-size: 15px;
  font-weight: 400;
  color: var(--ink);
}

.map-embed__badge a {
  display: inline-block;
  margin-top: 6px;
  color: var(--blue);
}

.map-note {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.map-note a {
  color: var(--blue);
}

@media (max-width: 820px) {
  .map-embed {
    height: 320px;
  }
}

.form-title {
  font-size: 26px;
  color: var(--blue-title);
}

.contact-info {
  max-width: 720px;
  margin: 34px auto 0;
  text-align: center;
}

.contact-info p {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

.contact-info strong {
  font-weight: 400;
  color: var(--ink);
}

.contact-info a {
  color: var(--blue);
}

.form-field {
  margin-top: 30px;
}

.form-field label {
  display: block;
  font-size: 15px;
  color: var(--ink);
}

.form-field .req {
  color: #f5222d;
}

.form-field input,
.form-field textarea {
  width: 100%;
  margin-top: 10px;
  padding: 13px 14px;
  border: 1px solid #e3e7f2;
  border-radius: 6px;
  background: #f7f8fc;
  font-family: inherit;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--blue);
  background: #fff;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: #b8bfd2;
}

.form-submit {
  margin-top: 34px;
}

.form-submit .btn {
  min-width: 128px;
  padding: 11px 40px;
}

.form-note {
  margin-top: 14px;
  font-size: 12px;
  color: var(--muted-2);
}

.form-toast {
  margin-top: 14px;
  font-size: 13px;
  color: #2f9e44;
  display: none;
}

.form-toast.is-visible {
  display: block;
}

/* ------------------------------------------------------------------ 页脚 */
.site-footer {
  background: var(--footer);
  color: #fff;
  padding: 70px 0 0;
}

.footer-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 54px;
}

.footer-brand {
  flex: 0 0 180px;
  text-align: center;
}

.footer-brand img {
  width: 74px;
  height: 74px;
  object-fit: contain;
}

.footer-brand p {
  margin-top: 10px;
  font-size: 14px;
}

.footer-links {
  flex: 0 1 auto;
  padding-top: 12px;
}

.footer-links h3 {
  font-size: 15px;
  font-weight: 700;
}

.footer-links ul {
  margin-top: 12px;
}

.footer-links li + li {
  margin-top: 10px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #fff;
}

.footer-contact {
  flex: 1 1 auto;
  padding-top: 12px;
  max-width: 420px;
}

.footer-contact h3 {
  font-size: 15px;
  font-weight: 700;
}

.footer-contact p {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.9);
  word-break: break-word;
}

.footer-qr {
  flex: 0 0 auto;
  text-align: center;
  padding-top: 6px;
}

.footer-qr img {
  width: 118px;
  height: 118px;
  padding: 6px;
  background: #fff;
  border-radius: 4px;
}

.footer-qr p {
  margin-top: 8px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.72);
}

.footer-bottom span {
  padding: 0 8px;
}

/* ------------------------------------------------------------ 右侧悬浮客服 */
.float-contact {
  position: fixed;
  right: 24px;
  top: 50%;
  z-index: 150;
  transform: translateY(-50%);
  text-align: center;
}

.float-contact__btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 46px;
  padding: 18px 0;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 0 14px rgba(0, 0, 0, 0.1);
  color: #0242ff;
}

.float-contact__bubble {
  display: block;
  width: 21.2px;
  height: 19.5px;
  margin-bottom: 14px;
  background: url("../img/icon-float-bubble.svg") center / 100% 100% no-repeat;
}

.float-contact__btn-text {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: 14px;
  line-height: 1;
  letter-spacing: 0;
}

.float-contact__qr {
  position: relative;
  width: 46px;
  margin-top: 8px;
  padding: 12px 0;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 0 14px rgba(0, 0, 0, 0.1);
}

.float-contact__qr > img {
  display: block;
  width: 20px;
  height: 20px;
  margin: 0 auto;
}

/* 悬浮弹窗：电话咨询 */
.float-contact__tip {
  position: absolute;
  right: calc(100% + 21px);
  bottom: -2px;
  display: flex;
  align-items: center;
  box-sizing: border-box;
  width: 139px;
  height: 75px;
  padding-left: 21px;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 0 14px rgba(0, 0, 0, 0.1);
  white-space: nowrap;
  text-align: left;
  opacity: 0;
  visibility: hidden;
  transform: translateX(6px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  pointer-events: none;
}

.float-contact__tip-icon {
  flex: 0 0 auto;
  width: 19.5px;
  height: 19.5px;
  margin-right: 13.5px;
  background: url("../img/icon-float-phone.svg") center / 100% 100% no-repeat;
}

.float-contact__tip-text {
  display: flex;
  flex-direction: column;
  line-height: 24px;
  letter-spacing: 0;
}

.float-contact__tip-text em {
  font-style: normal;
  font-size: 14px;
  color: #333333;
}

.float-contact__tip-text b {
  font-weight: 400;
  font-size: 12.5px;
  color: #999999;
}

.float-contact__btn:hover .float-contact__tip {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

/* 悬浮弹窗：微信客服二维码 */
.float-contact__qr-card {
  position: absolute;
  right: calc(100% + 21px);
  bottom: 0;
  box-sizing: border-box;
  width: 168px;
  padding: 16px 14px 14px;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 0 16px rgba(0, 0, 0, 0.12);
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transform: translateX(6px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  pointer-events: none;
}

.float-contact__qr:hover .float-contact__qr-card {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
  pointer-events: auto;
}

.float-contact__qr-card h4 {
  font-size: 14px;
  font-weight: 400;
  color: #333333;
}

.float-contact__qr-card img {
  display: block;
  width: 140px;
  height: 140px;
  margin: 10px auto 0;
}

.float-contact__qr-card p {
  margin-top: 8px;
  font-size: 13px;
  color: #999999;
}

@media (max-width: 1080px) {
  .float-contact {
    display: none;
  }
}

/* ------------------------------------------------------------ 分页指示器 */
.section-pager {
  position: fixed;
  right: 86px;
  top: 50%;
  z-index: 140;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--blue);
  pointer-events: none;
}

.section-pager__dot {
  pointer-events: auto;
}

.section-pager__index {
  font-weight: 700;
  letter-spacing: 1px;
}

.section-pager__dot {
  width: 26px;
  height: 26px;
  border: 0;
  border-radius: 50%;
  background: rgba(30, 80, 174, 0.12);
  color: var(--blue);
  font-size: 13px;
  line-height: 26px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.section-pager__dot:hover {
  background: var(--blue);
  color: #fff;
}

@media (max-width: 1080px) {
  .section-pager {
    display: none;
  }
}

/* ------------------------------------------------------------------ 响应式 */
@media (max-width: 1100px) {
  .grid--5 {
    grid-template-columns: repeat(3, 1fr);
  }

  .circle-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 960px) {
  .grid--4,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .sol-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .logo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 16px;
  }

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .split {
    flex-direction: column;
    gap: 36px;
  }

  .split--reverse {
    flex-direction: column;
  }

  .contact-layout {
    flex-direction: column;
  }

  .footer-grid {
    flex-wrap: wrap;
  }
}

@media (max-width: 820px) {
  :root {
    --header-h: 64px;
  }

  .header-inner {
    position: relative;
  }

  .nav-toggle {
    display: block;
  }

  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: var(--header-h);
    flex-direction: column;
    height: auto;
    background: #fff;
    box-shadow: 0 12px 24px rgba(30, 80, 174, 0.12);
    display: none;
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    width: 100%;
    padding: 0 22px;
    line-height: 52px;
    border-top: 1px solid var(--line);
  }

  .section {
    padding: 72px 0;
  }

  .section--screen {
    min-height: auto;
    padding: 96px 0 72px;
  }

  .hero {
    height: 56.25vw;
    min-height: 220px;
    margin-top: var(--header-h);
    background-color: #f4f6fc;
  }

  /* 手机上完整显示整张 banner，避免裁掉画面里的文字 */
  .hero-slide {
    background-size: contain;
  }

  .section-title {
    font-size: 22px;
  }

  .grid {
    margin-top: 40px;
    gap: 34px 20px;
  }

  .grid--3,
  .grid--4,
  .grid--5,
  .steps,
  .circle-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .circle-item__badge {
    width: 92px;
    height: 92px;
    font-size: 16px;
  }

  .logo-row {
    gap: 40px;
  }

  .logo-row img {
    height: 34px;
  }

  .footer-grid {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-contact {
    max-width: none;
  }
}

@media (max-width: 520px) {
  .grid--3,
  .grid--4,
  .grid--5,
  .steps,
  .circle-grid,
  .icon-group--2,
  .icon-group--3,
  .icon-group--4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .sol-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 36px;
  }

  .logo-grid {
    gap: 22px 10px;
    margin-top: 34px;
  }

  .logo-grid img {
    height: 48px;
  }

  .brand span {
    font-size: 14px;
  }
}

/* ------------------------------------------------- 手机端细节优化（≤680px） */
@media (max-width: 680px) {
  /* 1. 留白收紧，不再强制每屏 100vh */
  .section { padding: 58px 0; }
  .section--tight { padding: 48px 0; }
  .section--screen { min-height: auto; }
  .section-title { font-size: 21px; }
  .section-sub { margin-top: 4px; font-size: 12px; }
  .section-desc { margin-top: 16px; font-size: 13px; line-height: 1.9; }

  /* 2. 卡片一律两列，图标、图片缩小 */
  .grid { gap: 26px 16px; margin-top: 32px; }
  .icon-group { gap: 24px 16px; margin-top: 28px; }
  .grid--2,
  .grid--3,
  .grid--4,
  .grid--5,
  .icon-group--2,
  .icon-group--3,
  .icon-group--4,
  .circle-grid,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 整屏截图类的卡片（产品页装修组件）保持单列，图才看得清 */
  .grid--panels { grid-template-columns: 1fr; }
  .dash-grid { grid-template-columns: 1fr; gap: 20px; margin-top: 30px; }

  .card__icon { height: 64px; }
  .card__icon img { max-height: 58px; }
  .card__title { margin-top: 14px; font-size: 16px; }
  .card__desc { margin-top: 8px; font-size: 12.5px; line-height: 1.75; }

  .photo-card__title { margin-top: 12px; font-size: 15px; }
  .photo-card__desc { margin-top: 4px; font-size: 12.5px; }

  .panel-card { padding: 20px 16px; }
  .panel-card__title { margin-top: 16px; font-size: 17px; }
  .panel-card__desc { margin-top: 8px; font-size: 12.5px; }

  .icon-item__icon { height: 54px; }
  .icon-item__icon img { max-height: 48px; }
  .icon-item__title { font-size: 15px; }
  .icon-item__desc { font-size: 12.5px; line-height: 1.75; }

  .circle-grid { gap: 22px 12px; margin-top: 32px; }
  .circle-item__badge { width: 76px; height: 76px; padding: 0 6px; font-size: 13.5px; }
  .circle-item__title { margin-top: 10px; font-size: 13.5px; }
  .circle-item__desc { margin-top: 4px; font-size: 12px; }

  .steps { gap: 24px 16px; margin-top: 32px; }
  .step__no { font-size: 30px; }
  .step__title { font-size: 16px; }
  .step__desc { margin-top: 8px; font-size: 12.5px; line-height: 1.75; }

  /* 3. 首屏 banner：手机上高一些，别又扁又小 */
  .hero {
    height: 78vw;
    min-height: 272px;
    background-color: #f2f3f7;
  }
  .hero-slide {
    background-size: cover;
    background-position: 30% center;
  }
  .hero-arrow { width: 30px; height: 44px; margin-top: -22px; font-size: 17px; }
  .hero-dots { right: 10px; gap: 9px; }
  .hero-dots button { width: 8px; height: 8px; }

  .logo-wall { margin-top: 28px; }
  .logo-row { gap: 34px; padding: 8px 0; }
  .logo-row img { height: 30px; max-width: 92px; }

  .sol-grid { gap: 12px; margin-top: 30px; }
  .logo-grid { gap: 22px 10px; margin-top: 30px; }
  .logo-grid img { height: 44px; }

  .form-field input,
  .form-field textarea { padding: 13px 14px; font-size: 15px; }
  .btn { min-width: 132px; padding: 12px 28px; }

  /* 4. 页脚：手机上三栏并排（品牌 / 快速导航 / 联系我们），二维码单独一行 */
  .site-footer { padding: 34px 0 0; }
  .footer-grid {
    display: grid;
    grid-template-columns: auto 1fr 1.15fr;
    gap: 18px 14px;
    align-items: start;
    padding-bottom: 20px;
    text-align: left;
  }
  .footer-brand { text-align: left; }
  .footer-brand img { width: 56px; height: 56px; }
  .footer-brand p { margin-top: 8px; font-size: 11.5px; line-height: 1.45; }

  .footer-links { padding-top: 2px; }
  .footer-links h3 { font-size: 13px; }
  .footer-links ul { margin-top: 8px; }
  .footer-links li + li { margin-top: 5px; }
  .footer-links a { font-size: 12.5px; }

  .footer-contact { padding-top: 2px; max-width: none; }
  .footer-contact h3 { font-size: 13px; }
  .footer-contact p {
    margin-top: 7px;
    font-size: 11.5px;
    line-height: 1.55;
    overflow-wrap: anywhere;
  }

  .footer-qr {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 6px;
    text-align: left;
  }
  .footer-qr img { width: 78px; height: 78px; padding: 4px; }
  .footer-qr p { margin: 0; font-size: 12px; color: rgba(255, 255, 255, 0.85); }

  .footer-bottom { padding: 18px 0; font-size: 11.5px; }
  .footer-bottom span { padding: 0 6px; }
}