/* ===== 基础变量 ===== */
:root {
  --bg: #0d0f13;
  --bg-2: #15181e;
  --panel: rgba(255, 255, 255, 0.05);
  --line: rgba(255, 255, 255, 0.12);
  --text: #f3f5f8;
  --text-dim: #9aa3b0;
  --text-faint: rgba(255, 255, 255, 0.45);
  --accent: #e0a35c;
  --accent-soft: rgba(224, 163, 92, 0.16);
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  --font-display: 'Anton', 'Arial Narrow', 'Noto Sans SC', 'PingFang SC', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; background: none; border: none; color: inherit; cursor: pointer; }

::selection { background: rgba(224, 163, 92, 0.35); }

/* ===== 品牌加载页 ===== */
.loader {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: #0d0f13;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 30px;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.5s ease, visibility 0.5s;
}
.loader.hidden { opacity: 0; visibility: hidden; }
.loader-logo {
  width: 88px; height: 88px;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5);
  animation: loaderPulse 1.6s ease-in-out infinite;
}
.loader-logo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.loader-bar {
  width: 130px; height: 2px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
}
.loader-bar span {
  display: block;
  height: 100%;
  width: 40%;
  background: var(--accent);
  border-radius: 2px;
  animation: loaderSlide 1.2s ease-in-out infinite;
}
@keyframes loaderPulse {
  0%, 100% { transform: scale(1); opacity: 0.92; }
  50% { transform: scale(1.05); opacity: 1; }
}
@keyframes loaderSlide {
  0% { transform: translateX(-130%); }
  100% { transform: translateX(330%); }
}

/* 细滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.14); border-radius: 4px; }
::-webkit-scrollbar-track { background: transparent; }

/* ===== 顶部导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 30px 56px 0;
}

.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 38px; height: 38px;
  border-radius: 9px;
  background: linear-gradient(145deg, #232833, #13161c);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  font-size: 20px; font-weight: 700;
  overflow: hidden;
}
.logo-mark img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.logo-text { line-height: 1.15; }
.logo-brand { font-size: 21px; font-weight: 700; letter-spacing: 3px; }
.logo-domain { font-size: 11px; color: var(--text-faint); letter-spacing: 1.6px; margin-top: 3px; }

.site-nav { display: flex; gap: 38px; padding-top: 6px; }
.site-nav a {
  position: relative;
  font-size: 14px;
  letter-spacing: 2px;
  color: #d7dce3;
  padding: 4px 0;
  transition: color 0.3s;
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 50%; bottom: -3px;
  width: 0; height: 2px;
  background: var(--accent);
  transform: translateX(-50%);
  transition: width 0.3s;
}
.site-nav a:hover { color: #ffffff; }
.site-nav a.active { color: var(--accent); }
.site-nav a.active::after { width: 100%; }

/* 汉堡按钮（仅移动端显示） */
.menu-toggle {
  display: none;
  width: 42px; height: 42px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(13, 15, 19, 0.6);
  z-index: 90;
  transition: border-color 0.3s;
}
.menu-toggle span {
  display: block;
  width: 20px; height: 2px;
  border-radius: 1px;
  background: #e8ebf0;
  transition: transform 0.3s, opacity 0.3s;
}
body.menu-open .menu-toggle { border-color: rgba(224, 163, 92, 0.5); }
body.menu-open .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
body.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端全屏菜单 */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: rgba(11, 13, 17, 0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 38px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s;
}
body.menu-open .mobile-menu { opacity: 1; visibility: visible; }
.mobile-menu a {
  font-size: 25px;
  letter-spacing: 8px;
  color: #c7cdd6;
  padding: 8px 12px;
  transition: color 0.3s;
}
.mobile-menu a:hover { color: #ffffff; }
.mobile-menu a.active { color: var(--accent); }

/* ===== 视图容器 ===== */
.views { position: fixed; inset: 0; }

.view {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.55s ease;
}
.view.active { opacity: 1; visibility: visible; }

/* 兜底：极矮的窗口（高度不足 600px）时允许内部滚动，防止内容被裁掉 */
@media (min-width: 861px) and (max-height: 600px) {
  .view { overflow-y: auto; }
}

.view-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

/* 页面背景图 */
.bg-home { background-image: url('images/home.jpg'); }
.bg-about { background-image: url('images/about.jpg'); }
/* 企业文化背景：切到本页时由近到远缩放（1.5 倍 → 0.5 倍 / 50%，约 6 秒） */
.bg-culture {
  background-image: url('images/culture-office.jpg');
  background-position: center 30%;
  will-change: transform;
}
.view.active .bg-culture {
  animation: bgZoomOut 6s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}
@keyframes bgZoomOut {
  from { transform: scale(1.5); }
  to { transform: scale(0.7); }
}
.bg-join { background-image: url('images/culture.jpg'); }
.bg-contact { background-image: url('images/culture.jpg'); }

.view-overlay {
  position: absolute; inset: 0;
  z-index: 1;
}
.view-overlay.home-overlay {
  background: linear-gradient(100deg, rgba(10, 12, 15, 0.95) 0%, rgba(10, 12, 15, 0.78) 36%, rgba(10, 12, 15, 0.28) 68%, rgba(10, 12, 15, 0.62) 100%);
}
.view-overlay.about-overlay {
  background: linear-gradient(100deg, rgba(10, 12, 15, 0.92) 0%, rgba(10, 12, 15, 0.66) 40%, rgba(10, 12, 15, 0.14) 74%, rgba(10, 12, 15, 0.4) 100%);
}
.view-overlay.plain-overlay {
  background: rgba(11, 13, 17, 0.86);
}
/* 企业文化：左侧文字区压暗，右侧露出前台标志墙 */
.view-overlay.culture-overlay {
  background: linear-gradient(100deg, rgba(10, 12, 15, 0.9) 0%, rgba(10, 12, 15, 0.66) 40%, rgba(10, 12, 15, 0.22) 72%, rgba(10, 12, 15, 0.42) 100%);
}
.view-overlay.join-overlay {
  background: linear-gradient(180deg, rgba(10, 12, 15, 0.9) 0%, rgba(10, 12, 15, 0.55) 50%, rgba(10, 12, 15, 0.85) 100%);
}

.view-content {
  position: relative;
  z-index: 2;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(84px, 11.5vh, 130px) 64px clamp(84px, 10.5vh, 120px);
}

/* ===== 英文展示标题 ===== */
.en-display {
  font-family: var(--font-display);
  font-size: clamp(64px, 13vh, 148px);
  line-height: 1;
  letter-spacing: 4px;
  color: rgba(255, 255, 255, 0.075);
  text-transform: uppercase;
  user-select: none;
}

/* ===== 页面1 首页 ===== */
.home-content { justify-content: flex-end; padding-bottom: 150px; }
.home-title {
  font-size: clamp(38px, 4.4vw, 64px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 2px;
  max-width: 780px;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}
.home-title em {
  font-style: normal;
  color: var(--accent);
}
.home-desc {
  margin-top: 34px;
  font-size: 16px;
  line-height: 2.1;
  color: #c9cfd8;
  max-width: 620px;
  letter-spacing: 1px;
}
.home-side-text {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 84px;
  letter-spacing: 18px;
  color: rgba(255, 255, 255, 0.08);
  text-transform: uppercase;
  user-select: none;
  pointer-events: none;
  white-space: nowrap;
}

/* ===== 页面2 公司简介 ===== */
.about-block { max-width: 760px; }
.about-title-row { display: flex; align-items: baseline; gap: 22px; margin-top: clamp(14px, 3vh, 26px); }
.about-title-zh { font-size: clamp(30px, 3vw, 42px); font-weight: 700; letter-spacing: 4px; }
.about-title-en { font-size: 15px; color: var(--text-faint); letter-spacing: 2px; }
.about-text {
  margin-top: clamp(20px, 4.5vh, 40px);
  font-size: clamp(15px, 2.2vh, 17px);
  line-height: 2.15;
  color: #cfd5dd;
  letter-spacing: 0.5px;
  max-width: 720px;
}
.about-text strong { color: var(--accent); font-weight: 500; }

/* ===== 页面3 企业文化 ===== */
.culture-header { max-width: 900px; }
.culture-title-row { display: flex; align-items: baseline; gap: 22px; margin-top: clamp(12px, 2.6vh, 22px); }
.culture-title-zh { font-size: clamp(30px, 3vw, 42px); font-weight: 700; letter-spacing: 4px; }
.culture-title-en { font-size: 15px; color: var(--text-faint); letter-spacing: 2px; }

.culture-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin-top: clamp(24px, 5vh, 48px);
  max-width: 960px;
}
.culture-tab {
  font-size: 17px;
  letter-spacing: 2px;
  color: #aeb6c0;
  padding: 8px 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.3s, border-color 0.3s;
}
.culture-tab:hover { color: #ffffff; }
.culture-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.culture-detail {
  margin-top: clamp(20px, 4.5vh, 44px);
  max-width: 780px;
  border-left: 3px solid var(--accent);
  padding-left: 34px;
  min-height: clamp(120px, 22vh, 220px);
}
.culture-detail-name { font-size: 20px; font-weight: 700; letter-spacing: 3px; color: var(--accent); }
.culture-detail-lines { margin-top: clamp(16px, 3vh, 26px); display: flex; flex-direction: column; gap: clamp(10px, 2vh, 18px); }
.culture-detail-lines p {
  font-size: clamp(15px, 2.2vh, 17px);
  line-height: 1.85;
  color: #d3d9e0;
  letter-spacing: 0.5px;
  animation: fadeUp 0.45s ease both;
}
.culture-detail-lines p:nth-child(2) { animation-delay: 0.06s; }
.culture-detail-lines p:nth-child(3) { animation-delay: 0.12s; }
.culture-detail-lines p:nth-child(4) { animation-delay: 0.18s; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 页面4 加入我们 ===== */
.join-content { align-items: center; text-align: center; }
.join-title-zh { font-size: clamp(28px, 4.6vh, 46px); font-weight: 700; letter-spacing: 8px; }
.join-title-en { margin-top: clamp(8px, 1.6vh, 12px); font-size: 15px; color: var(--text-faint); letter-spacing: 4px; text-transform: uppercase; }

/* 轮播宽度同时受视口宽度与“剩余高度换算宽度”约束，保证整页不超高 */
.join-carousel {
  position: relative;
  width: min(880px, 86vw, calc((100vh - 340px) * 1.7));
  margin-top: clamp(24px, 4.5vh, 46px);
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}
.join-track { position: relative; aspect-ratio: 16 / 9.4; }
.join-slide {
  position: absolute; inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease;
}
.join-slide.active { opacity: 1; visibility: visible; }
.join-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.join-slide-veil {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 38%, rgba(8, 10, 13, 0.92) 100%);
}
.join-slide-caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 26px 34px 30px;
  text-align: left;
}
.join-slide-title { font-size: 24px; font-weight: 700; letter-spacing: 3px; color: var(--accent); }
.join-slide-desc { margin-top: 12px; font-size: 15px; line-height: 1.9; color: #d5dae0; max-width: 620px; }

.join-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 46px; height: 46px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(12, 14, 18, 0.55);
  border: 1px solid var(--line);
  color: #dfe3e9;
  transition: background 0.3s, border-color 0.3s;
}
.join-arrow:hover { background: var(--accent); border-color: var(--accent); color: #141414; }
.join-arrow.prev { left: -62px; }
.join-arrow.next { right: -62px; }

.join-dots { display: flex; gap: 12px; margin-top: clamp(12px, 2.6vh, 26px); justify-content: center; }
.join-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  transition: background 0.3s, transform 0.3s;
}
.join-dot.active { background: var(--accent); transform: scale(1.25); }

/* ===== 页面5 联系我们 ===== */
.contact-content { align-items: center; text-align: center; }
.contact-title-zh { font-size: clamp(28px, 4.6vh, 46px); font-weight: 700; letter-spacing: 8px; }
.contact-title-en { margin-top: clamp(8px, 1.6vh, 12px); font-size: 15px; color: var(--text-faint); letter-spacing: 4px; text-transform: uppercase; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 44px;
  width: min(1080px, 92vw);
  margin-top: clamp(24px, 5vh, 52px);
  text-align: left;
}
.contact-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: clamp(24px, 4.5vh, 42px) clamp(24px, 3vw, 40px);
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 3vh, 30px);
}
.contact-company { display: flex; align-items: center; gap: 14px; }
.contact-company-mark {
  width: 46px; height: 46px;
  border-radius: 11px;
  background: linear-gradient(145deg, #232833, #13161c);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  font-size: 24px; font-weight: 700;
  overflow: hidden;
}
.contact-company-mark img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.contact-company-name { font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.contact-company-sub { margin-top: 4px; font-size: 12px; color: var(--text-faint); letter-spacing: 1px; }

.contact-rows { display: flex; flex-direction: column; gap: clamp(16px, 2.8vh, 24px); }
.contact-row { display: flex; gap: 18px; align-items: flex-start; }
.contact-row-icon {
  flex: none;
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--accent-soft);
  border: 1px solid rgba(224, 163, 92, 0.28);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
}
.contact-row-label { font-size: 12px; color: var(--text-faint); letter-spacing: 2px; margin-top: 2px; }
.contact-row-value { margin-top: 7px; font-size: 15px; line-height: 1.8; color: #d9dee5; letter-spacing: 0.5px; }
.contact-note { font-size: 12px; color: rgba(255, 255, 255, 0.35); line-height: 1.9; padding-top: 4px; border-top: 1px solid rgba(255, 255, 255, 0.08); }

.contact-map {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  position: relative;
  min-height: clamp(220px, 34vh, 340px);
  background: #151a22;
}
.contact-map svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.map-pin-ring { transform-origin: 50% 50%; animation: ping 2.4s ease-out infinite; }
@keyframes ping {
  0% { transform: scale(0.5); opacity: 0.9; }
  75%, 100% { transform: scale(2.1); opacity: 0; }
}
.contact-map-tag {
  position: absolute;
  left: 50%; bottom: 22px;
  transform: translateX(-50%);
  background: rgba(13, 15, 19, 0.85);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 18px;
  font-size: 12px;
  letter-spacing: 2px;
  color: #cfd5dd;
  white-space: nowrap;
}

/* ===== 底部版权 ===== */
.site-footer {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 50;
  text-align: center;
  padding: 14px 20px 16px;
  font-size: 12px;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.5);
  background: linear-gradient(180deg, rgba(13, 15, 19, 0) 0%, rgba(13, 15, 19, 0.85) 60%);
  line-height: 1.8;
}
.site-footer .sep { margin: 0 10px; color: rgba(255, 255, 255, 0.25); }

/* ===== 轮播分页控件（右下角） ===== */
.pager {
  position: fixed;
  right: 44px;
  bottom: 84px;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 18px;
}
.pager-num { font-family: var(--font-display); font-size: 20px; letter-spacing: 2px; }
.pager-current { color: var(--accent); }
.pager-total { color: rgba(255, 255, 255, 0.35); }
.pager-dots { display: flex; gap: 9px; }
.pager-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transition: background 0.3s, transform 0.3s;
  padding: 0;
}
.pager-dot.active { background: var(--accent); transform: scale(1.3); }
.pager-arrow {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  color: #cfd5dd;
  transition: background 0.3s, border-color 0.3s, color 0.3s;
}
.pager-arrow:hover { background: var(--accent); border-color: var(--accent); color: #141414; }

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
  .join-arrow.prev { left: -8px; }
  .join-arrow.next { right: -8px; }
  .home-side-text { display: none; }
}

@media (max-width: 860px) {
  .site-header { flex-direction: row; align-items: center; gap: 12px; padding: 16px 20px 0; }
  .site-nav { display: none; }
  .menu-toggle { display: flex; }
  /* 移动端内容纵向堆叠，允许页面内部滚动 */
  .view { overflow-y: auto; -webkit-overflow-scrolling: touch; }
  .loader-logo { width: 72px; height: 72px; border-radius: 18px; }
  .view-content { padding: 128px 24px 150px; }
  .home-title { font-size: 30px; }
  .home-desc { font-size: 14px; }
  .about-text { font-size: 15px; }
  .culture-tabs { gap: 12px 22px; }
  .culture-detail { padding-left: 22px; min-height: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .pager { right: 18px; bottom: 78px; gap: 12px; }
  .join-slide-caption { padding: 18px 20px 22px; }
  .join-slide-title { font-size: 19px; }
  .join-slide-desc { font-size: 13px; }
  .site-footer { font-size: 10.5px; padding: 12px 14px 14px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}