/* ============================================================
   VICVIK - Common Layout
   公共头部 / 尾部 / 基础变量
============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
}

:root {
  --black: #0e0e0c;
  --gold: #c9a96e;
  --gold-dark: #8b6914;
  --gold-light: #e8d5b0;
  --white: #ffffff;
  --bg-warm: #faf8f5;
  --bg-dark: #111110;
  --text-body: #3a3834;
  --text-mute: #7a7570;
  --border: rgba(201, 169, 110, 0.2);
  --radius: 6px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 12px rgba(14, 14, 12, 0.06);
  --shadow-md: 0 8px 32px rgba(14, 14, 12, 0.1);
  --shadow-lg: 0 20px 60px rgba(14, 14, 12, 0.14);
  --trans: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  max-width: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  max-width: 100%;
  overflow-x: clip;
}

body.site-nav-open {
  overflow: hidden;
}

#site-header,
#site-footer {
  width: 100%;
}

.nav-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  box-shadow: 0 1px 0 var(--border);
}

.nav-header .logo-text {
  color: var(--black) !important;
}

.nav-header .logo-vv {
  background: var(--black) !important;
  border: none !important;
}

.nav-header .nav-links a {
  color: var(--black) !important;
}

.nav-header .nav-links .nav-cta {
  background: var(--black) !important;
  color: var(--white) !important;
}

.nav-header .nav-links .nav-cta:hover {
  background: var(--gold) !important;
  color: var(--white) !important;
}

.nav-header .hamburger span {
  background: var(--black) !important;
}

.nav-inner {
  max-width: 1260px;
  margin: 0 auto;
  width: 100%;
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
}

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  min-width: 0;
}

.logo-img {
  height: 55px;
  width: auto;
  max-width: min(180px, 44vw);
  display: block;
  object-fit: contain;
}

.logo-img-footer {
  height: 36px;
  filter: brightness(0) invert(1);
}

.logo-vv {
  width: 40px;
  height: 40px;
  background: var(--black);
  color: var(--gold);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 1px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--black);
  line-height: 1;
}

.logo-text em {
  font-style: normal;
  font-size: 12px;
  font-weight: 400;
  color: var(--gold);
  display: block;
  letter-spacing: 2px;
  margin-top: 2px;
  font-family: "Noto Serif SC", "STSong", "SimSun", serif;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.5px;
  color: var(--black);
  transition: color var(--trans);
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--gold);
  transition: width var(--trans);
}

.nav-links a:hover {
  color: var(--gold);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--gold);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 3px;
  border: 1px solid rgba(201, 169, 110, 0.34);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 6px 18px rgba(14, 14, 12, 0.05);
  white-space: nowrap;
}

.language-link {
  min-width: 42px;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--black);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.4px;
  text-align: center;
  text-decoration: none;
  transition: color var(--trans), background var(--trans);
}

.language-link:hover {
  color: var(--white);
  background: var(--gold);
}

.language-divider {
  width: 1px;
  height: 14px;
  background: rgba(201, 169, 110, 0.32);
}

body[data-page="index"] .nav-links a[data-nav="index"],
body[data-page="about"] .nav-links a[data-nav="about"],
body[data-page="products"] .nav-links a[data-nav="products"],
body[data-page="cases"] .nav-links a[data-nav="cases"],
body[data-page="channel"] .nav-links a[data-nav="channel"],
body[data-page="news"] .nav-links a[data-nav="news"] {
  color: var(--gold) !important;
  text-decoration: none !important;
  border-bottom: none !important;
  box-shadow: none !important;
}

body[data-page="index"] .nav-links a[data-nav="index"]::after,
body[data-page="about"] .nav-links a[data-nav="about"]::after,
body[data-page="products"] .nav-links a[data-nav="products"]::after,
body[data-page="cases"] .nav-links a[data-nav="cases"]::after,
body[data-page="channel"] .nav-links a[data-nav="channel"]::after,
body[data-page="news"] .nav-links a[data-nav="news"]::after {
  width: 100% !important;
  background: var(--gold) !important;
}

.nav-cta {
  padding: 9px 22px;
  border-radius: var(--radius);
  font-size: 13px !important;
  letter-spacing: 1px;
  transition: background var(--trans) !important;
}

.nav-cta::after {
  display: none !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border: none;
  background: none;
  cursor: pointer;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--black);
  border-radius: 2px;
  transition: var(--trans);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: 0;
  width: 100%;
  max-width: 100vw;
  background: var(--bg-dark);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  overflow-x: hidden;
  transform: translateX(100%);
  transition: transform var(--trans);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu a {
  font-size: 24px;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 3px;
  transition: color var(--trans);
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--gold);
}

body[data-page="index"] .mobile-menu a[data-nav="index"],
body[data-page="about"] .mobile-menu a[data-nav="about"],
body[data-page="products"] .mobile-menu a[data-nav="products"],
body[data-page="cases"] .mobile-menu a[data-nav="cases"],
body[data-page="channel"] .mobile-menu a[data-nav="channel"],
body[data-page="news"] .mobile-menu a[data-nav="news"],
body[data-page="contact"] .mobile-menu a[data-nav="contact"] {
  color: var(--gold) !important;
}

.mobile-close {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 28px;
  color: var(--white);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  cursor: pointer;
}

.footer {
  background: var(--bg-dark);
  padding: 42px 0 0;
  color: rgba(255, 255, 255, 0.6);
  overflow: visible;
}

.footer-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 48px;
}

.footer-top {
  display: block;
  padding-bottom: 28px;
}

.footer-nav-row {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 420px);
  align-items: start;
  gap: 56px;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(201, 169, 110, 0.8);
}

.footer-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 34px;
  padding-top: 6px;
}

.footer-nav-links a {
  color: var(--white);
  font-size: 16px;
  line-height: 1.5;
  text-decoration: none;
  transition: color var(--trans);
}

.footer-nav-links a:hover {
  color: var(--gold);
}

.footer-hero-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  margin-left: auto;
}

.footer-slogan {
  color: var(--white);
  font-family: "Noto Serif SC", "STSong", "SimSun", serif;
  font-size: 20px;
  line-height: 1.4;
  text-align: center;
  font-weight: 500;
}

.footer-main-qr {
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-content {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 620px);
  gap: 56px;
  align-items: end;
  padding: 34px 0 18px;
}

.footer-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 40px;
}

.footer-info-group h4 {
  color: #af8751;
  font-size: 24px;
  line-height: 1.2;
  margin-bottom: 18px;
  font-weight: 700;
}

.footer-info-group h4 strong {
  font-size: 56px;
  line-height: 0.9;
  margin-right: 6px;
  display: inline-block;
  vertical-align: baseline;
}

.footer-info-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-info-list p {
  color: var(--white);
  font-size: 16px;
  line-height: 1.55;
}

.footer-social-zone {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 18px;
}

.footer-socials {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-social-item {
  position: relative;
  width: 134px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 86px;
  outline: none;
}

.footer-social-item:hover .footer-qr-pop,
.footer-social-item:focus-within .footer-qr-pop,
.footer-social-item:focus-visible .footer-qr-pop {
  opacity: 1;
  transform: translate(-50%, 0);
  pointer-events: auto;
}

.footer-social-item:focus-visible .footer-social-icon {
  border-color: var(--gold);
  color: var(--gold);
}

.footer-qr-pop {
  position: absolute;
  left: 50%;
  top: 0;
  opacity: 0;
  transform: translate(-50%, 12px);
  pointer-events: none;
  transition: opacity var(--trans), transform var(--trans);
  z-index: 5;
}

.footer-qr-media {
  --qr-image: none;
  width: 118px;
  height: 118px;
  border: 2px solid rgba(255, 255, 255, 0.18);
  background-color: #ffffff;
  background-image:
    var(--qr-image),
    linear-gradient(90deg, rgba(0, 0, 0, 0.06) 10%, transparent 10%, transparent 50%, rgba(0, 0, 0, 0.06) 50%, rgba(0, 0, 0, 0.06) 60%, transparent 60%, transparent 100%),
    linear-gradient(rgba(0, 0, 0, 0.06) 10%, transparent 10%, transparent 50%, rgba(0, 0, 0, 0.06) 50%, rgba(0, 0, 0, 0.06) 60%, transparent 60%, transparent 100%);
  background-size: cover, 22px 22px, 22px 22px;
  background-position: center;
  border-radius: 2px;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.22);
}

.footer-qr-main {
  width: 86px;
  height: 86px;
  box-shadow: none;
}

.footer-qr-wechat-official {
  --qr-image: url("../assets/images/footer-qr-wechat-official.png");
}

.footer-qr-wechat-video {
  --qr-image: url("../assets/images/footer-qr-wechat-video.png");
}

.footer-qr-jianjia-douyin {
  --qr-image: url("../assets/images/footer-qr-jianjia-douyin.png");
}

.footer-qr-jianjia-xiaohongshu {
  --qr-image: url("../assets/images/footer-qr-jianjia-xiaohongshu.png");
}

.footer-social-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.86);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  background: transparent;
  transition: color var(--trans), border-color var(--trans), transform var(--trans);
}

.footer-social-item:hover .footer-social-icon {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}

.footer-social-mark {
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
}

.footer-social-mark.is-xhs {
  font-size: 14px;
  letter-spacing: 0.5px;
}

.footer-social-label {
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
  line-height: 1.4;
  text-align: center;
}

.footer-bottom {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 34px;
  padding: 10px 0;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.72);
  border-top: none;
}

.footer-copy {
  color: inherit;
}

.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 999px;
  background: rgba(14, 14, 12, 0.92);
  color: var(--white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity var(--trans), transform var(--trans), visibility var(--trans), background var(--trans);
  z-index: 1200;
}

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

.back-top:hover {
  background: var(--gold);
}

@media (max-width: 1024px) {
  .nav-inner {
    padding: 0 20px;
  }

  .nav-links {
    display: none;
  }

  .nav-actions {
    gap: 10px;
    margin-left: auto;
  }

  .language-switch {
    padding: 2px;
    background: rgba(255, 255, 255, 0.9);
  }

  .language-link {
    min-width: 36px;
    padding: 6px 8px;
    font-size: 11px;
  }

  .language-divider {
    height: 12px;
  }

  .hamburger {
    display: flex;
  }

  .footer-nav-row,
  .footer-content {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-hero-side,
  .footer-social-zone {
    align-items: flex-start;
    margin-left: 0;
  }

  .footer-socials {
    justify-content: flex-start;
  }

  .footer-bottom {
    justify-content: flex-start;
    gap: 20px;
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .nav-inner,
  .footer-inner {
    padding: 0 16px;
  }

  .logo-img {
    height: 42px;
    max-width: min(156px, 42vw);
  }

  .nav-actions {
    gap: 7px;
  }

  .language-link {
    min-width: 32px;
    padding: 6px 7px;
    font-size: 10px;
    letter-spacing: 0.2px;
  }

  .hamburger {
    padding: 7px;
  }

  .footer-nav-row {
    gap: 20px;
    padding-bottom: 18px;
  }

  .footer-nav-links {
    gap: 14px 24px;
  }

  .footer-nav-links a {
    font-size: 15px;
  }

  .footer-slogan {
    font-size: 18px;
  }

  .footer-content {
    gap: 26px;
    padding: 26px 0 12px;
  }

  .footer-meta {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-info-group h4 {
    font-size: 20px;
    margin-bottom: 14px;
  }

  .footer-info-group h4 strong {
    font-size: 46px;
  }

  .footer-info-list p {
    font-size: 15px;
  }

  .footer-socials {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 12px;
  }

  .footer-social-item {
    width: 100%;
    padding-top: 0;
    gap: 8px;
  }

  .footer-qr-pop {
    position: static;
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .footer-main-qr {
    display: none;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .back-top {
    right: 16px;
    bottom: 16px;
  }
}