/* ==========================================================================
   components.css · 通用组件（按钮 / 卡片 / 导航 / 页脚 / Hero / 统计 /
   时间线 / 画廊灯箱 / 轮播 / 悬浮工具 / 返回顶部 / 表单 / 徽章 / 面包屑）
   ========================================================================== */

/* ============================== 按钮 ============================== */
.btn {
  --btn-bg: var(--gold);
  --btn-fg: var(--white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.85em 1.9em;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.04em;
  line-height: 1;
  border-radius: var(--radius-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  cursor: pointer;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), background var(--t) var(--ease);
  white-space: nowrap;
}
.btn svg { width: 1.05em; height: 1.05em; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-gold); background: var(--gold-deep); }

.btn--primary { background: var(--grad-gold); color: var(--white); }
.btn--primary:hover { box-shadow: var(--shadow-gold); }

/* 禁用态：覆盖 hover/上浮效果，置灰 */
.btn:disabled, .btn[disabled] {
  background: var(--line); color: rgba(255,255,255,.85); cursor: not-allowed;
  transform: none; box-shadow: none; opacity: .7;
}
.btn:disabled:hover, .btn[disabled]:hover { transform: none; box-shadow: none; background: var(--line); }

.btn--outline {
  background: transparent;
  color: var(--ink);
  box-shadow: inset 0 0 0 1.5px var(--line);
}
.btn--outline:hover { background: var(--ink); color: var(--white); box-shadow: var(--shadow-sm); }

.btn--ghost-light {
  background: transparent;
  color: var(--white);
  box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, 0.55);
}
.btn--ghost-light:hover { background: rgba(255, 255, 255, 0.14); color: var(--white); box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, 0.55); }

.btn--lg { padding: 1.05em 2.4em; font-size: var(--fs-body); }
.btn--block { display: flex; width: 100%; }

/* 文字链接箭头 */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--gold-deep);
  letter-spacing: 0.03em;
}
.link-arrow svg { width: 1.05em; height: 1.05em; transition: transform var(--t) var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ============================== 徽章 / 标签 ============================== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.32em 0.85em;
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
  border-radius: var(--radius-pill);
  background: var(--gold-tint);
  color: var(--gold-deep);
  border: 1px solid var(--gold-soft);
  line-height: 1.6;
}
.tag--outline { background: transparent; }
.tag--rose { background: var(--rose-soft); color: var(--rose-deep); border-color: var(--rose-soft); }

.eyebrow-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--fs-display-en);
  letter-spacing: var(--ls-wide);
  color: var(--gold);
  text-transform: uppercase;
}
.eyebrow-tag::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold);
}

/* ============================== 卡片 ============================== */
.card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }

/* 图文卡片：上图下文 */
.feature-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-soft);
  padding: clamp(1.75rem, 3vw, 2.5rem);
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), border-color var(--t) var(--ease);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--gold-soft); }
.feature-card .ico {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--gold-tint);
  color: var(--gold-deep);
  margin-bottom: var(--space-5);
}
.feature-card .ico svg { width: 28px; height: 28px; }
.feature-card h3 { font-size: var(--fs-h4); margin-bottom: var(--space-2); }
.feature-card p { font-size: 0.95rem; line-height: var(--lh-normal); }

/* ============================== 顶部导航 ============================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background var(--t) var(--ease), box-shadow var(--t) var(--ease), backdrop-filter var(--t);
}
/* 透明态（首页 hero 上方） */
.site-header.is-transparent {
  background: transparent;
  box-shadow: none;
}
.site-header.is-transparent .nav__link,
.site-header.is-transparent .brand__name { color: var(--white); }
.site-header.is-transparent .brand__en { color: rgba(255, 255, 255, 0.7); }
.site-header.is-transparent .nav__toggle span { background: var(--white); }
/* 透明态下当前页(active)链接也用白色，靠金色下划线区分，避免深金字压在暗 Hero 上不可读 */
.site-header.is-transparent .nav__item.is-active > .nav__link { color: var(--white); }
.site-header.is-transparent .nav__item.is-active > .nav__link::after { background: var(--gold-soft); }

/* 滚动后态：白底毛玻璃 */
.site-header.is-scrolled {
  background: rgba(251, 247, 241, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  box-shadow: 0 1px 0 rgba(231, 221, 207, 0.8), var(--shadow-sm);
}

.nav__inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

/* Logo —— 图片 logo（透明 PNG，黑字黑图） */
.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand__logo {
  height: 40px;
  width: auto;
  display: block;
  /* 滚动后白底页头：黑 logo 正常显示 */
  filter: invert(0);
  transition: filter var(--t) var(--ease);
}
/* 透明态（首页深色 hero 上方）：黑 logo 反成白色，保证可读 */
.site-header.is-transparent .brand__logo { filter: invert(1); }
/* 页脚 logo：更大、无需反色（页脚本身是深色背景，黑色 logo 需反色可见） */
.brand__logo--footer { height: 52px; filter: invert(1); }

/* 菜单 */
.nav__menu {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: clamp(0.3rem, 1.1vw, 1.2rem);
}
.nav__item { position: relative; }
.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  padding: 0.5em 0.55em;
  font-size: 0.88rem;
  font-weight: var(--fw-medium);
  color: var(--ink);
  border-radius: var(--radius-sm);
  position: relative;
  white-space: nowrap;
  transition: color var(--t) var(--ease);
}
.nav__link svg { width: 0.9em; height: 0.9em; opacity: 0.7; }
.nav__link::after {
  content: "";
  position: absolute;
  left: 0.6em;
  right: 0.6em;
  bottom: 0.1em;
  height: 2px;
  background: var(--grad-gold);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t) var(--ease);
}
.nav__link:hover::after,
.nav__item.is-active > .nav__link::after { transform: scaleX(1); }
.nav__item.is-active > .nav__link { color: var(--gold-deep); }

/* 二级下拉 */
.nav__submenu {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 200px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease), visibility var(--t);
}
.nav__item:hover .nav__submenu,
.nav__item:focus-within .nav__submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav__submenu a {
  display: block;
  padding: 0.6em 0.9em;
  font-size: 0.9rem;
  color: var(--ink-soft);
  border-radius: var(--radius-sm);
  transition: background var(--t-fast), color var(--t-fast);
}
.nav__submenu a:hover { background: var(--gold-tint); color: var(--gold-deep); }

.nav__cta { margin-left: var(--space-3); }

/* 汉堡按钮 */
.nav__toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius-sm);
}
.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--t) var(--ease), opacity var(--t-fast);
}
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端遮罩抽屉（右侧面板 + 深色遮罩，不占满屏幕） */
.nav__drawer {
  position: fixed;
  inset: 0;
  background: rgba(26, 22, 18, 0);
  z-index: calc(var(--z-header) - 1);
  visibility: hidden;
  transition: background var(--t-slow) var(--ease), visibility 0s linear var(--t-slow);
}
.nav__drawer.is-open {
  background: rgba(26, 22, 18, 0.5);
  visibility: visible;
  transition: background var(--t-slow) var(--ease);
}
.nav__drawer-panel {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 78%;
  max-width: 360px;
  background: var(--cream);
  padding: calc(var(--header-h) + var(--space-5)) clamp(1.25rem, 5vw, 2.25rem) var(--space-6);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  transform: translateX(-100%);
  transition: transform var(--t-slow) var(--ease);
  box-shadow: var(--shadow-lg);
}
.nav__drawer.is-open .nav__drawer-panel { transform: none; }
.nav__drawer a.m-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.95rem 0;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--ink);
  border-bottom: 1px solid var(--line-soft);
}
.nav__drawer a.m-link .en {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: var(--ls-wide);
}
.nav__drawer .m-sub {
  padding-left: var(--space-4);
  margin-bottom: var(--space-2);
}
.nav__drawer .m-sub a {
  display: block;
  padding: 0.55rem 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
}
.nav__drawer .btn { margin-top: var(--space-5); }

/* ============================== Hero 通用 ============================== */
.hero {
  position: relative;
  min-height: clamp(560px, 88vh, 900px);
  display: flex;
  align-items: center;
  color: var(--white);
  overflow: hidden;
  isolation: isolate;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-size: cover;
  background-position: center;
  transform: scale(1.06);
  animation: heroZoom 14s var(--ease-out) forwards;
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
}
@keyframes heroZoom { to { transform: scale(1); } }
@media (prefers-reduced-motion: reduce) { .hero__bg { animation: none; transform: none; } }

.hero__inner { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: clamp(1.25rem, 4vw, 2.5rem); }
.hero__eyebrow {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--fs-display-en);
  letter-spacing: var(--ls-wider);
  color: var(--gold-soft);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.hero h1 {
  font-size: var(--fs-hero);
  color: var(--white);
  line-height: 1.08;
  font-weight: var(--fw-bold);
}
.hero__slogan {
  margin-top: var(--space-4);
  font-size: var(--fs-lead);
  color: rgba(255, 255, 255, 0.92);
  max-width: 540px;
}
.hero__meta {
  margin-top: var(--space-4);
  display: inline-flex;
  align-items: center;
  gap: 0.8em;
  font-family: var(--font-display);
  font-size: var(--fs-display-en);
  letter-spacing: var(--ls-wide);
  color: rgba(255, 255, 255, 0.8);
}
.hero__meta::before, .hero__meta::after { content: ""; width: 36px; height: 1px; background: var(--gold-soft); }
.hero__actions { margin-top: var(--space-6); display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ---------- 首页 Hero 增强 ---------- */
.hero--home {
  min-height: clamp(620px, 92vh, 920px);
  align-items: stretch;
}
.hero--home .hero__bg::after {
  background: var(--grad-hero);
}
.hero--home .hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-hero-bottom);
  z-index: 1;
  pointer-events: none;
}
.hero__grain {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
}
.hero--home .hero__inner {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
  padding-block: calc(var(--header-h) + clamp(2rem, 6vh, 4rem)) clamp(5rem, 10vh, 7rem);
}
.hero__content {
  position: relative;
  max-width: 620px;
}
.hero__content::before {
  content: "";
  position: absolute;
  left: -1.25rem;
  top: 0.35rem;
  bottom: 0.35rem;
  width: 2px;
  background: var(--grad-gold);
  border-radius: 2px;
  opacity: 0.85;
}
.hero--home .hero__eyebrow {
  margin-bottom: var(--space-5);
  padding-left: 0.5rem;
}
.hero--home h1 {
  font-family: var(--font-serif);
  font-weight: var(--fw-bold);
  letter-spacing: 0.06em;
}
.hero__title-main {
  display: inline-block;
  background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.88) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: none;
}
.hero__tagline {
  margin-top: var(--space-3);
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: rgba(255, 255, 255, 0.82);
  letter-spacing: 0.08em;
  padding-left: 0.5rem;
}
.hero--home .hero__slogan {
  max-width: none;
  font-weight: var(--fw-medium);
  letter-spacing: 0.04em;
  padding-left: 0.5rem;
}
.hero--home .hero__meta {
  margin-top: var(--space-5);
  padding-left: 0.5rem;
}
.hero__aside {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding-right: clamp(0rem, 3vw, 2rem);
}
.hero__badge {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.6rem;
  padding: clamp(1.25rem, 2.5vw, 1.75rem) clamp(1.5rem, 3vw, 2rem);
  background: rgba(251, 247, 241, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.hero__badge-en {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(0.75rem, 1.2vw, 0.9rem);
  letter-spacing: var(--ls-wider);
  color: var(--gold-soft);
  text-transform: uppercase;
  text-align: right;
}
.hero__badge-cn {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  color: rgba(255, 255, 255, 0.92);
  letter-spacing: 0.12em;
}
.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: clamp(1.5rem, 4vh, 2.5rem);
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--t) var(--ease), transform var(--t) var(--ease);
  z-index: 2;
}
.hero__scroll svg {
  width: 20px;
  height: 20px;
  animation: scrollBounce 2s var(--ease) infinite;
}
.hero__scroll:hover { color: var(--gold-soft); transform: translateX(-50%) translateY(3px); }
@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(5px); }
}
@media (prefers-reduced-motion: reduce) {
  .hero__scroll svg { animation: none; }
}

/* Hero 渐显逐元素 */
.hero [data-hero] { opacity: 0; transform: translateY(24px); }
.hero.is-ready [data-hero] { animation: heroIn 0.9s var(--ease-out) forwards; }
.hero.is-ready [data-hero="1"] { animation-delay: 0.15s; }
.hero.is-ready [data-hero="2"] { animation-delay: 0.35s; }
.hero.is-ready [data-hero="3"] { animation-delay: 0.5s; }
.hero.is-ready [data-hero="4"] { animation-delay: 0.7s; }
@keyframes heroIn { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .hero [data-hero] { opacity: 1 !important; transform: none !important; animation: none !important; }
}

/* 内页页头横幅（小 hero） */
.page-hero {
  position: relative;
  min-height: clamp(340px, 46vh, 460px);
  display: flex;
  align-items: flex-end;
  color: var(--white);
  overflow: hidden;
  isolation: isolate;
  margin-top: 0;
}
.page-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-size: cover;
  background-position: center;
}
.page-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26, 22, 18, 0.55) 0%, rgba(26, 22, 18, 0.35) 40%, rgba(26, 22, 18, 0.78) 100%);
}
.page-hero__inner { width: 100%; max-width: var(--container); margin-inline: auto; padding-block: clamp(2rem, 5vw, 4rem); padding-inline: clamp(1.25rem, 4vw, 2.5rem); }
.page-hero .eyebrow { color: var(--gold-soft); }
.page-hero h1 { color: var(--white); font-size: var(--fs-h1); }
.page-hero p { color: rgba(255, 255, 255, 0.85); margin-top: var(--space-3); max-width: 600px; }

/* 面包屑 */
.breadcrumb {
  font-size: var(--fs-xs);
  color: var(--muted);
  letter-spacing: 0.04em;
}
.breadcrumb a:hover { color: var(--gold-deep); }
.breadcrumb span { margin-inline: 0.5em; color: var(--gold-soft); }

/* ============================== 统计条 ============================== */
.stat-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
.stat {
  text-align: center;
  padding: var(--space-5) var(--space-3);
  position: relative;
}
.stat:not(:last-child)::after {
  content: "";
  position: absolute;
  right: calc(var(--space-5) / -2);
  top: 22%;
  bottom: 22%;
  width: 1px;
  background: var(--line);
}
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1;
  background: var(--grad-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat__num small { font-size: 0.45em; font-weight: 600; }
.stat__label { margin-top: var(--space-3); font-size: var(--fs-sm); color: var(--ink-soft); letter-spacing: 0.04em; }

/* ============================== 时间线 ============================== */
.timeline { position: relative; max-width: 820px; margin-inline: auto; }
.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold-soft), var(--gold), var(--gold-soft));
  transform: translateX(-50%);
}
.tl-item { position: relative; width: 50%; padding: 0 var(--space-6) var(--space-7); }
.tl-item:nth-child(odd) { left: 0; text-align: right; }
.tl-item:nth-child(even) { left: 50%; }
.tl-item .dot {
  position: absolute;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px var(--cream), 0 0 0 6px var(--gold-soft);
}
.tl-item:nth-child(odd) .dot { right: -8px; }
.tl-item:nth-child(even) .dot { left: -8px; }
.tl-year {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--gold-deep);
  line-height: 1;
}
.tl-title { font-family: var(--font-serif); font-size: var(--fs-h4); margin: var(--space-2) 0; }
.tl-desc { font-size: var(--fs-sm); color: var(--ink-soft); }

/* ============================== 环境画廊 + 灯箱 ============================== */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--space-3); }
.gallery__item {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: zoom-in;
  background: var(--cream-2);
}
.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}
.gallery__item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(26, 22, 18, 0.6));
  opacity: 0;
  transition: opacity var(--t) var(--ease);
}
.gallery__item .cap {
  position: absolute;
  left: var(--space-3);
  bottom: var(--space-3);
  right: var(--space-3);
  color: var(--white);
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease);
  z-index: 2;
}
.gallery__item:hover img { transform: scale(1.08); }
.gallery__item:hover::after,
.gallery__item:focus-visible::after { opacity: 1; }
.gallery__item:hover .cap { opacity: 1; transform: none; }

/* 画廊筛选 tab */
.gallery-filter { display: flex; flex-wrap: wrap; gap: var(--space-2); justify-content: center; margin-bottom: var(--space-6); }
.gallery-filter button {
  padding: 0.55em 1.3em;
  font-size: var(--fs-sm);
  border-radius: var(--radius-pill);
  color: var(--ink-soft);
  border: 1px solid var(--line);
  background: var(--white);
  transition: all var(--t) var(--ease);
}
.gallery-filter button.is-active,
.gallery-filter button:hover { background: var(--ink); color: var(--white); border-color: var(--ink); }

/* 灯箱 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-lightbox);
  background: rgba(20, 16, 12, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t) var(--ease), visibility var(--t);
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox__img { max-width: 90vw; max-height: 82vh; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.lightbox__cap { position: absolute; bottom: var(--space-6); left: 0; right: 0; text-align: center; color: rgba(255, 255, 255, 0.8); font-size: var(--fs-sm); }
.lb-btn {
  position: absolute;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
  display: grid;
  place-items: center;
  transition: background var(--t-fast);
}
.lb-btn:hover { background: rgba(255, 255, 255, 0.24); }
.lb-btn svg { width: 24px; height: 24px; }
.lb-close { top: var(--space-5); right: var(--space-5); }
.lb-prev { left: var(--space-5); top: 50%; transform: translateY(-50%); }
.lb-next { right: var(--space-5); top: 50%; transform: translateY(-50%); }
.lb-count { position: absolute; top: var(--space-5); left: var(--space-6); color: rgba(255, 255, 255, 0.6); font-family: var(--font-display); font-size: var(--fs-sm); }

/* ============================== 轮播 ============================== */
.carousel { position: relative; }
.carousel__viewport { overflow: hidden; }
.carousel__track { display: flex; transition: transform 0.6s var(--ease-out); }
.carousel__slide { flex: 0 0 calc(100% / 3); padding: 0 calc(var(--space-3) / 2); }
.carousel__nav { display: flex; align-items: center; justify-content: center; gap: var(--space-4); margin-top: var(--space-6); }
.car-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  display: grid;
  place-items: center;
  transition: all var(--t) var(--ease);
}
.car-btn:hover { background: var(--ink); color: var(--white); border-color: var(--ink); }
.car-btn svg { width: 20px; height: 20px; }
.carousel__dots { display: flex; gap: 0.5rem; }
.carousel__dots button { width: 8px; height: 8px; border-radius: 50%; background: var(--line); transition: all var(--t) var(--ease); }
.carousel__dots button.is-active { width: 26px; border-radius: 4px; background: var(--gold); }

/* ============================== 悬浮工具 / 返回顶部 ============================== */
.float-tools {
  position: fixed;
  right: clamp(1rem, 2.5vw, 2rem);
  bottom: clamp(1rem, 2.5vw, 2rem);
  z-index: var(--z-float);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.float-btn {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--white);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.float-btn:hover { transform: translateY(-3px); }
.float-btn svg { width: 24px; height: 24px; }
.float-btn--phone { background: var(--grad-rose); }
.float-btn--consult { background: var(--grad-gold); }
.float-btn__tip {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  white-space: nowrap;
  font-size: var(--fs-sm);
  background: var(--white);
  color: var(--ink);
  padding: 0.5em 0.9em;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t) var(--ease);
}
.float-btn:hover .float-btn__tip { opacity: 1; }

/* 返回顶部 */
.back-top {
  position: fixed;
  right: calc(clamp(1rem, 2.5vw, 2rem) + 3px);
  bottom: calc(clamp(1rem, 2.5vw, 2rem) + 132px);
  z-index: var(--z-backtop);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--white);
  color: var(--gold-deep);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--t) var(--ease);
}
.back-top.is-show { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { background: var(--ink); color: var(--white); border-color: var(--ink); }
.back-top svg { width: 20px; height: 20px; }

/* ============================== 表单 ============================== */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.field { display: flex; flex-direction: column; gap: 0.45rem; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: var(--fs-sm); font-weight: var(--fw-medium); color: var(--ink); }
.field .req { color: var(--rose); }
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  color: var(--ink);
  transition: border-color var(--t) var(--ease), box-shadow var(--t) var(--ease), background var(--t);
}
.field input::placeholder,
.field textarea::placeholder { color: var(--muted); }
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--gold);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(184, 151, 102, 0.16);
}
.field textarea { resize: vertical; min-height: 120px; }
.field__err { color: var(--danger); font-size: var(--fs-xs); min-height: 1em; }
.field.has-error input,
.field.has-error textarea { border-color: var(--danger); box-shadow: 0 0 0 3px rgba(192, 101, 90, 0.14); }

.form-note {
  font-size: var(--fs-xs);
  color: var(--muted);
  background: var(--gold-tint);
  border-left: 3px solid var(--gold);
  padding: 0.8em 1em;
  border-radius: var(--radius-sm);
}
.form-success {
  display: none;
  padding: var(--space-4);
  background: #eef5ec;
  border: 1px solid #cdddc7;
  border-radius: var(--radius);
  color: #3d5a37;
  font-size: var(--fs-sm);
}
.form-success.is-show { display: block; }

/* ============================== 页脚 ============================== */
.site-footer { background: var(--ink); color: rgba(251, 247, 241, 0.7); padding-top: clamp(3rem, 6vw, 5rem); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: var(--space-7);
}
.footer-brand .brand__name { color: var(--white); }
.footer-brand .brand__en { color: var(--gold-soft); }
.footer-desc { margin-top: var(--space-4); font-size: var(--fs-sm); line-height: var(--lh-normal); max-width: 320px; color: rgba(251, 247, 241, 0.62); }
.footer-slogan { margin-top: var(--space-4); font-family: var(--font-serif); font-size: 1.05rem; color: var(--gold-soft); }
.footer-col h4 {
  color: var(--white);
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.footer-col ul li { margin-bottom: var(--space-3); }
.footer-col ul a { font-size: var(--fs-sm); color: rgba(251, 247, 241, 0.62); transition: color var(--t-fast); }
.footer-col ul a:hover { color: var(--gold-soft); }
.footer-contact li {
  display: flex;
  gap: 0.7rem;
  font-size: var(--fs-sm);
  margin-bottom: var(--space-3);
  color: rgba(251, 247, 241, 0.7);
}
.footer-contact svg { width: 18px; height: 18px; flex: none; color: var(--gold); margin-top: 2px; }

.footer-qr { display: flex; gap: var(--space-3); margin-top: var(--space-4); }
.footer-qr .qr { text-align: center; }
.footer-qr .qr-box {
  width: 84px;
  height: 84px;
  border-radius: var(--radius-sm);
  background: var(--white);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.6rem;
  overflow: hidden;
}
/* 官方微信：铺满白底（原图自带留白） */
.footer-qr .qr-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
/* VR 看院：透明 PNG，加衬底留白 + 金边 + 阴影 + 交互 */
.footer-qr .qr-box--framed {
  border: 1px solid var(--gold-soft);
  box-shadow: 0 4px 14px rgba(42, 37, 32, 0.18);
  transition: transform .3s ease, box-shadow .3s ease;
}
.footer-qr .qr-box--framed:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 22px rgba(42, 37, 32, 0.26);
}
.footer-qr .qr-box--framed img {
  object-fit: contain;   /* 保留二维码留白，不裁切 */
  padding: 4px;          /* 白底内边距，不贴边，更精致 */
}
.footer-qr .qr span { display: block; font-size: var(--fs-xs); margin-top: 0.4rem; color: rgba(251, 247, 241, 0.6); }

.footer-bottom {
  border-top: 1px solid rgba(231, 221, 207, 0.14);
  padding-block: var(--space-5);
  font-size: var(--fs-xs);
  color: rgba(251, 247, 241, 0.5);
}
.footer-bottom .container { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-5); align-items: center; justify-content: space-between; }
.footer-legal { display: flex; flex-direction: column; gap: 0.3rem; }
.footer-legal a:hover { color: var(--gold-soft); }
.footer-risk { color: rgba(251, 247, 241, 0.45); max-width: 420px; line-height: var(--lh-normal); }

/* ============================== 响应式 ============================== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .carousel__slide { flex-basis: 50%; }
}

/* 导航：≤1024 切换为汉堡，避免窄屏菜单换行 */
@media (max-width: 1024px) {
  .nav__menu, .nav__cta { display: none; }
  .nav__toggle { display: flex; }
}

@media (max-width: 768px) {
  .hero--home .hero__inner {
    grid-template-columns: 1fr;
    padding-block: calc(var(--header-h) + 2rem) 5rem;
  }
  .hero__content::before { left: -0.75rem; }
  .hero__aside { display: none; }
  .hero__scroll { display: none; }
  .stat-band { grid-template-columns: 1fr 1fr; gap: 0; }
  .stat:nth-child(2)::after, .stat:nth-child(4)::after { display: none; }
  .stat:nth-child(odd)::after { display: block; }

  /* 时间线单列 */
  .timeline::before { left: 12px; }
  .tl-item { width: 100%; left: 0 !important; text-align: left !important; padding-left: calc(var(--space-6) + 12px); padding-right: 0; }
  .tl-item .dot { left: 4px !important; right: auto !important; }

  .carousel__slide { flex-basis: 100%; }
  .form-grid { grid-template-columns: 1fr; }

  .float-tools { gap: var(--space-2); }
  .float-btn { width: 48px; height: 48px; }
  .back-top { bottom: calc(clamp(1rem, 2.5vw, 2rem) + 116px); }
}