@charset "utf-8";

/* ========== 乾坤智能首页（设计稿还原） ========== */

:root {
  --qk-gold: rgba(235, 205, 164, 1);
  --qk-gold-deep: rgba(230, 185, 128, 1);
  --qk-gold-text: rgba(87, 67, 3, 1);
  --qk-bg: #000000;
  --qk-panel: #1a1a1c;
  --qk-panel-2: #222226;
  --qk-text: #ffffff;
  --qk-text-muted: rgba(173, 173, 173, 1);
  --qk-text-dim: rgba(255, 255, 255, 0.55);
  --qk-container: 1260px;
}

body.qk-home {
  background: var(--qk-bg);
  color: var(--qk-text);
}

body.qk-home #body,
body.qk-home {
  min-height: 100vh;
}

/* 首页顶栏透明叠在 Hero 上 */
body.qk-home .head_nav.opc-embed-nav,
body.qk-home .nav_mobile.opc-embed-nav-mobile {
  background: transparent !important;
  box-shadow: none !important;
}

body.qk-home .head_nav.opc-embed-nav.fix_nav {
  background: rgba(0, 0, 0, 0.55) !important;
}

body.qk-home .menu_main .main_a {
  color: rgba(255, 255, 255, 0.88);
}

body.qk-home .account-link {
  color: rgba(255, 255, 255, 0.88);
}

.qk-container {
  max-width: var(--qk-container);
  margin: 0 auto;
  padding: 0 30px;
  box-sizing: border-box;
}

/* ---------- Hero 第一屏 ---------- */
.qk-hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--qk-bg);
}

.qk-hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.qk-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.35) 0%,
    rgba(0, 0, 0, 0.2) 45%,
    rgba(0, 0, 0, 0.55) 100%
  );
  pointer-events: none;
}

.qk-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 120px 30px 80px;
  max-width: 900px;
}

.qk-hero-tag {
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 6px;
  color: var(--qk-gold);
  margin-bottom: 28px;
}

.qk-hero-title {
  font-size: 64px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--qk-text);
  margin: 0 0 24px;
  letter-spacing: 4px;
}

.qk-hero-sub {
  font-size: 20px;
  font-weight: 400;
  line-height: 32px;
  color: rgba(255, 255, 255, 0.88);
  margin: 0 0 48px;
  letter-spacing: 1px;
}

.qk-hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.qk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  height: 50px;
  padding: 0 32px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: opacity 0.25s ease, transform 0.25s ease;
  text-decoration: none;
  box-sizing: border-box;
}

.qk-btn:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.qk-btn-gold {
  background: linear-gradient(180deg, var(--qk-gold-deep) 0%, var(--qk-gold) 100%);
  color: var(--qk-gold-text);
  border: 1px solid rgba(0, 0, 0, 0.2);
}

.qk-btn-outline {
  background: transparent;
  color: var(--qk-text);
  border: 1px solid rgba(255, 255, 255, 0.65);
}

/* ---------- 通用区块 ---------- */
.qk-section {
  background: var(--qk-bg);
  padding: 72px 0;
}

.qk-sec-heading {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin: 0 0 40px;
}

.qk-sec-heading-text {
  font-size: 36px;
  font-weight: 500;
  color: var(--qk-text);
  line-height: 1.2;
  letter-spacing: 2px;
}

.qk-sec-heading-line {
  display: block;
  width: 48px;
  height: 3px;
  margin-top: 12px;
  background: var(--qk-gold);
}

.qk-sec-sub {
  font-size: 14px;
  font-weight: 400;
  line-height: 24px;
  color: var(--qk-text-muted);
  margin: -24px 0 36px;
}

/* ---------- 服务双卡 ---------- */
.qk-service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.qk-service-card {
  background: var(--qk-panel);
  padding: 36px 32px 28px;
  position: relative;
  min-height: 220px;
}

.qk-service-icon {
  display: block;
  width: 32px;
  height: 32px;
  object-fit: contain;
  margin-bottom: 20px;
}

.qk-service-title {
  font-size: 24px;
  font-weight: 500;
  color: var(--qk-text);
  margin: 0 0 16px;
  line-height: 1.35;
}

.qk-service-desc {
  font-size: 14px;
  font-weight: 400;
  line-height: 26px;
  color: var(--qk-text-muted);
  margin: 0;
  padding-bottom: 28px;
}

.qk-service-line {
  position: absolute;
  left: 32px;
  bottom: 24px;
  display: flex;
  gap: 8px;
  height: 2px;
}

.qk-service-line--segments i {
  display: block;
  height: 2px;
  background: var(--qk-gold);
}

.qk-service-line--segments i:nth-child(1) {
  width: 32px;
}

.qk-service-line--segments i:nth-child(2) {
  width: 48px;
}

.qk-service-line--segments i:nth-child(3) {
  width: 64px;
}

.qk-service-line--full {
  left: 32px;
  right: 32px;
  display: block;
}

.qk-service-line--full::before,
.qk-service-line--full::after {
  display: none;
}

.qk-service-line--full {
  width: auto;
  background: var(--qk-gold);
}

/* ---------- 核心优势 ---------- */
.qk-advantage-panel {
  display: grid;
  grid-template-columns: minmax(280px, 36%) 1fr;
  gap: 0;
  background: var(--qk-panel-2);
  overflow: hidden;
}

.qk-advantage-left {
  padding: 40px 36px;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.qk-advantage-mark {
  width: 28px;
  height: 28px;
  object-fit: contain;
  margin-bottom: 16px;
}

.qk-advantage-title {
  font-size: 28px;
  font-weight: 500;
  color: var(--qk-gold);
  margin: 0 0 24px;
}

.qk-advantage-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.qk-advantage-list li {
  display: flex;
  gap: 14px;
  margin-bottom: 24px;
}

.qk-advantage-list li:last-child {
  margin-bottom: 0;
}

.qk-adv-bullet {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--qk-gold);
  margin-top: 2px;
  background: rgba(235, 205, 164, 0.08);
}

.qk-adv-label {
  display: block;
  font-size: 18px;
  font-weight: 500;
  color: var(--qk-gold);
  margin-bottom: 8px;
}

.qk-advantage-list p {
  font-size: 13px;
  line-height: 22px;
  color: var(--qk-text-muted);
  margin: 0;
}

.qk-advantage-cards {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.qk-mini-card {
  padding: 28px 20px 24px;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.qk-mini-card:first-child {
  border-left: none;
}

.qk-mini-card img {
  width: 24px;
  height: 24px;
  object-fit: contain;
  margin-bottom: 14px;
}

.qk-mini-card h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--qk-gold);
  margin: 0 0 10px;
}

.qk-mini-card p {
  font-size: 12px;
  line-height: 20px;
  color: var(--qk-text-muted);
  margin: 0 0 auto;
  padding-bottom: 16px;
  flex: 1;
}

.qk-mini-more {
  font-size: 12px;
  color: var(--qk-gold);
  text-decoration: none;
}

.qk-mini-more:hover {
  opacity: 0.85;
}

/* ---------- 产品卖点 ---------- */
.qk-products {
  padding-top: 56px;
}

.qk-sec-heading--products {
  margin-bottom: 12px;
}

.qk-product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.qk-product-card--1 {
  background-image: url("../images/home/sy_banner.jpg");
}

.qk-product-card--2 {
  background-image: url("../images/tech/dov.jpg");
}

.qk-product-card--3 {
  background-image: url("../images/tech/img.png");
}

.qk-product-card--4 {
  background-image: url("../images/home/pro-bg.png");
}

.qk-product-card {
  position: relative;
  min-height: 280px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

.qk-product-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.15) 0%,
    rgba(0, 0, 0, 0.55) 55%,
    rgba(0, 0, 0, 0.82) 100%
  );
  z-index: 0;
}

.qk-product-card > * {
  position: relative;
  z-index: 1;
}

.qk-product-tag {
  font-size: 14px;
  font-weight: 400;
  color: var(--qk-gold);
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.qk-product-title {
  font-size: 28px;
  font-weight: 500;
  color: var(--qk-text);
  margin: 0 0 12px;
  line-height: 1.3;
}

.qk-product-desc {
  font-size: 14px;
  line-height: 24px;
  color: var(--qk-text-dim);
  margin: 0;
  max-width: 420px;
}

/* ---------- 订阅 ---------- */
.qk-subscribe {
  padding: 48px 0 80px;
}

.qk-subscribe-box {
  max-width: 720px;
  margin: 0 auto;
  background: var(--qk-panel);
  padding: 48px 40px;
  text-align: center;
}

.qk-subscribe-title {
  font-size: 28px;
  font-weight: 500;
  color: var(--qk-text);
  margin: 0 0 12px;
}

.qk-subscribe-desc {
  font-size: 14px;
  line-height: 24px;
  color: var(--qk-text-muted);
  margin: 0 0 32px;
}

.qk-subscribe-form {
  display: flex;
  gap: 12px;
  max-width: 520px;
  margin: 0 auto;
}

.qk-subscribe-input {
  flex: 1;
  min-width: 0;
  height: 50px;
  padding: 0 18px;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  color: var(--qk-text);
  font-size: 14px;
  outline: none;
}

.qk-subscribe-input::placeholder {
  color: rgba(255, 255, 255, 0.38);
}

.qk-subscribe-input:focus {
  border-color: rgba(235, 205, 164, 0.45);
}

.qk-subscribe-btn {
  flex-shrink: 0;
  min-width: 140px;
  height: 50px;
  font-size: 16px;
}

/* ---------- 页脚 ---------- */
.qk-footer {
  background: var(--qk-bg);
  padding: 56px 0 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.qk-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.qk-footer-logo img {
  display: block;
  height: 36px;
  width: auto;
  margin-bottom: 16px;
}

.qk-footer-about {
  font-size: 13px;
  line-height: 24px;
  color: var(--qk-gold);
  margin: 0;
  max-width: 280px;
}

.qk-footer-heading {
  font-size: 16px;
  font-weight: 500;
  color: var(--qk-gold);
  margin: 0 0 20px;
}

.qk-footer-links,
.qk-footer-contact {
  list-style: none;
  margin: 0;
  padding: 0;
}

.qk-footer-links li,
.qk-footer-contact li {
  margin-bottom: 12px;
}

.qk-footer-links a,
.qk-footer-contact li {
  font-size: 13px;
  line-height: 22px;
  color: var(--qk-gold);
  opacity: 0.9;
}

.qk-footer-links a:hover {
  opacity: 1;
}

.qk-footer-bottom {
  text-align: center;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.qk-footer-bottom p {
  font-size: 13px;
  color: var(--qk-gold);
  margin: 0 0 8px;
  opacity: 0.85;
}

.qk-footer-copy {
  font-size: 12px !important;
  color: var(--qk-text-muted) !important;
  opacity: 1 !important;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width: 1100px) {
  .qk-advantage-panel {
    grid-template-columns: 1fr;
  }

  .qk-advantage-left {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .qk-advantage-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .qk-mini-card:nth-child(4) {
    border-left: none;
  }
}

@media screen and (max-width: 768px) {
  .qk-container {
    padding: 0 0.58rem;
  }

  .qk-hero-content {
    padding: 5.5rem 0.58rem 3rem;
  }

  .qk-hero-tag {
    font-size: 0.55rem;
    letter-spacing: 0.2rem;
    margin-bottom: 0.9rem;
  }

  .qk-hero-title {
    font-size: 1.6rem;
    margin-bottom: 0.7rem;
    letter-spacing: 0.12rem;
  }

  .qk-hero-sub {
    font-size: 0.65rem;
    line-height: 1.1rem;
    margin-bottom: 1.4rem;
  }

  .qk-hero-actions {
    gap: 0.6rem;
  }

  .qk-btn {
    min-width: 5.8rem;
    height: 1.75rem;
    padding: 0 1rem;
    font-size: 0.65rem;
    border-radius: 0.28rem;
  }

  .qk-section {
    padding: 2.2rem 0;
  }

  .qk-sec-heading-text {
    font-size: 0.9rem;
  }

  .qk-sec-heading-line {
    width: 1.4rem;
    height: 2px;
    margin-top: 0.35rem;
  }

  .qk-sec-sub {
    font-size: 0.5rem;
    margin: -0.5rem 0 1rem;
  }

  .qk-service-grid {
    grid-template-columns: 1fr;
    gap: 0.6rem;
    margin-bottom: 0.6rem;
  }

  .qk-service-card {
    padding: 1rem 0.85rem 0.85rem;
    min-height: unset;
  }

  .qk-service-title {
    font-size: 0.75rem;
    margin-bottom: 0.45rem;
  }

  .qk-service-desc {
    font-size: 0.5rem;
    line-height: 0.85rem;
    padding-bottom: 1.2rem;
  }

  .qk-service-line {
    left: 0.85rem;
    bottom: 0.7rem;
  }

  .qk-service-line--full {
    left: 0.85rem;
    right: 0.85rem;
  }

  .qk-advantage-left {
    padding: 1rem 0.85rem;
  }

  .qk-advantage-title {
    font-size: 0.8rem;
    margin-bottom: 0.8rem;
  }

  .qk-adv-label {
    font-size: 0.65rem;
  }

  .qk-advantage-list p {
    font-size: 0.48rem;
    line-height: 0.75rem;
  }

  .qk-advantage-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .qk-mini-card {
    padding: 0.85rem 0.65rem;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }

  .qk-mini-card:nth-child(odd) {
    border-right: 1px solid rgba(255, 255, 255, 0.06);
  }

  .qk-mini-card h4 {
    font-size: 0.62rem;
  }

  .qk-mini-card p {
    font-size: 0.48rem;
    line-height: 0.72rem;
  }

  .qk-product-grid {
    grid-template-columns: 1fr;
    gap: 0.55rem;
  }

  .qk-product-card {
    min-height: 7.5rem;
    padding: 1rem 0.85rem;
  }

  .qk-product-tag {
    font-size: 0.5rem;
    margin-bottom: 0.35rem;
  }

  .qk-product-title {
    font-size: 0.75rem;
    margin-bottom: 0.35rem;
  }

  .qk-product-desc {
    font-size: 0.48rem;
    line-height: 0.75rem;
  }

  .qk-subscribe-box {
    padding: 1.2rem 0.85rem;
  }

  .qk-subscribe-title {
    font-size: 0.8rem;
  }

  .qk-subscribe-desc {
    font-size: 0.5rem;
    margin-bottom: 0.9rem;
  }

  .qk-subscribe-form {
    flex-direction: column;
  }

  .qk-subscribe-input,
  .qk-subscribe-btn {
    width: 100%;
    height: 1.75rem;
    font-size: 0.55rem;
  }

  .qk-footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
    margin-bottom: 1.2rem;
  }

  .qk-footer-col:first-child {
    grid-column: 1 / -1;
  }

  .qk-footer-about,
  .qk-footer-links a,
  .qk-footer-contact li,
  .qk-footer-bottom p {
    font-size: 0.48rem;
    line-height: 0.8rem;
  }

  .qk-footer-heading {
    font-size: 0.58rem;
    margin-bottom: 0.5rem;
  }
}