/* ============================================================
   Mikael & Louis — Growth Journey
   单页长滚动 · 响应式 · 英文为主
   Google Material 风格：白底 · 四色点缀 · 圆角卡片 · 无衬线
   ============================================================ */

:root {
  --bg: #FFFFFF;          /* 纯白背景 */
  --surface: #F8F9FA;     /* 浅灰区块 */
  --blue: #1A73E8;        /* Google 蓝（主色） */
  --blue-light: #E8F0FE;
  --red: #EA4335;         /* Google 红 */
  --red-light: #FCE8E6;
  --yellow: #FBBC04;      /* Google 黄 */
  --yellow-light: #FEF7E0;
  --green: #34A853;       /* Google 绿 */
  --green-light: #E6F4EA;
  --ink: #202124;         /* 正文深灰 */
  --muted: #5F6368;       /* 次级文字 */
  --line: #DADCE0;        /* 边框 */
  --white: #FFFFFF;

  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
          'PingFang SC', 'Helvetica Neue', Helvetica, Arial, sans-serif;

  --radius: 12px;
  --maxw: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, video { display: block; width: 100%; height: 100%; object-fit: cover; }

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

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- 导航栏 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.nav-logo {
  font-weight: 500; color: var(--ink); font-size: 16px; letter-spacing: 0.2px;
  display: inline-flex; align-items: center; gap: 8px;
  white-space: nowrap;
}
.nav-logo-divider {
  display: inline-block; color: var(--line); font-weight: 300; font-size: 14px;
  margin: 0 2px;
}
.nav-logo-sub {
  font-size: 13px; font-weight: 400; color: var(--muted); letter-spacing: 0.1px;
}
.nav-links { display: flex; gap: 26px; font-size: 13px; color: var(--muted); }
.nav-links a:hover { color: var(--blue); }
.nav-cta {
  font-size: 12px; font-weight: 500; color: var(--blue);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 5px 12px; white-space: nowrap;
}

/* ---------- Hero ---------- */
.hero { padding: 72px 0 56px; }
.hero-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 44px; align-items: center;
}
.hero-eyebrow { font-size: 13px; font-weight: 500; color: var(--blue); margin-bottom: 12px; }
.hero-title {
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.2; color: var(--ink); font-weight: 500;
}
.hero-desc { font-size: 15px; color: var(--muted); margin-top: 18px; max-width: 460px; }
.hero-actions { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.btn {
  display: inline-block; font-size: 14px; font-weight: 500; border-radius: 999px;
  padding: 11px 22px; transition: transform 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-ghost { color: var(--blue); border: 1px solid var(--line); }
.hero-media {
  display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 10px;
}
.hero-media .tile { border-radius: 12px; overflow: hidden; min-height: 120px; position: relative; }
.hero-media .tile span {
  position: absolute; left: 12px; bottom: 10px; font-size: 12px; font-weight: 500; color: #fff;
}

/* ---------- 通用区块 ---------- */
section { padding: 72px 0; }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-kicker { font-size: 12px; font-weight: 500; color: var(--blue); margin-bottom: 10px; }
.section-title { font-size: clamp(24px, 4vw, 34px); color: var(--ink); font-weight: 500; line-height: 1.3; }
.section-desc { font-size: 15px; color: var(--muted); margin-top: 14px; }

/* ---------- Family ---------- */
.family-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 44px; align-items: center; }
.family-photo { border-radius: var(--radius); overflow: hidden; aspect-ratio: 4 / 5; background: var(--surface); }
.family-list { list-style: none; margin-top: 22px; }
.family-list li {
  padding: 14px 0; border-bottom: 1px solid var(--line);
}
.family-list li:last-child { border-bottom: 0; }
.family-list .who {
  font-weight: 500; color: var(--ink); display: block;
  margin-bottom: 4px; letter-spacing: 0.1px;
}
.family-list .who .role {
  color: var(--muted); font-weight: 400; font-size: 14px;
  margin-left: 2px;
}
.family-list .desc { color: var(--muted); font-size: 14px; line-height: 1.5; }
.family-subtitle {
  font-size: 13px; font-weight: 500; color: var(--blue);
  margin: 0 0 6px; letter-spacing: 0.08em; text-transform: uppercase;
}

/* ---------- Values ---------- */
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.value-card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 24px;
}
.value-card .icon {
  width: 44px; height: 44px; border-radius: 12px; margin-bottom: 18px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
}
.value-card .icon svg { width: 24px; height: 24px; display: block; }
.value-card h3 { font-size: 19px; color: var(--ink); font-weight: 500; margin-bottom: 8px; }
.value-card p { font-size: 13.5px; color: var(--muted); }

/* ---------- 孩子成长（双栏） ---------- */
.child-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.child-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--white); }
.child-card .photo { aspect-ratio: 3 / 4; overflow: hidden; background: var(--surface); }
.child-card .photo img { width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; }
.child-card .body { padding: 22px 24px; }
.child-card .name { font-size: 22px; color: var(--ink); font-weight: 500; }
.child-card .age { font-size: 12px; font-weight: 500; color: var(--blue); margin-top: 2px; }
.child-card .tagline { font-size: 14px; color: var(--ink); margin-top: 10px; }
.child-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.child-tags span {
  font-size: 12px; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: 20px; padding: 5px 12px;
}
.child-quote {
  margin-top: 18px; padding: 14px 16px; border-left: 3px solid var(--blue);
  background: var(--surface); border-radius: 0 10px 10px 0;
  font-size: 14.5px; color: var(--ink);
}

/* ---------- 时间线 ---------- */
.timeline { position: relative; max-width: 720px; margin: 0 auto; }
.timeline::before {
  content: ''; position: absolute; left: 22px; top: 0; bottom: 0;
  width: 2px; background: var(--line);
}
.tl-item { position: relative; padding: 0 0 40px 66px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute; left: 14px; top: 4px; width: 18px; height: 18px;
  border-radius: 50%; background: var(--blue); border: 4px solid var(--bg);
}
.tl-date { font-size: 12px; font-weight: 500; color: var(--blue); }
.tl-title { font-size: 18px; color: var(--ink); font-weight: 500; margin-top: 4px; }
.tl-text { font-size: 13.5px; color: var(--muted); margin-top: 6px; }

/* ---------- 画廊：横向滑动胶片条 ---------- */
.carousel { margin-top: 8px; }

/* 分类切换 */
.carousel-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.ctab {
  font-family: inherit; font-size: 13px; font-weight: 500; color: var(--muted);
  background: var(--white); border: 1px solid var(--line); border-radius: 999px;
  padding: 7px 16px; cursor: pointer; transition: all 0.18s ease;
}
.ctab:hover { border-color: var(--blue); color: var(--blue); }
.ctab.active { background: var(--blue); border-color: var(--blue); color: #fff; }
.ctab .cnt { opacity: 0.6; margin-left: 5px; font-size: 12px; }
.ctab[hidden] { display: none; }

/* 轨道 */
.carousel-wrap { position: relative; }
.carousel-track {
  display: flex; gap: 14px;
  overflow-x: auto; overflow-y: hidden;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  padding: 4px 2px 14px;
  scrollbar-width: none; -ms-overflow-style: none;
  cursor: grab;
}
.carousel-track::-webkit-scrollbar { display: none; }
.carousel-track.dragging { cursor: grabbing; scroll-snap-type: none; }
.carousel-track .c-item {
  flex: 0 0 auto; width: 260px; scroll-snap-align: start;
  aspect-ratio: 3 / 4; border-radius: var(--radius); overflow: hidden;
  position: relative; background: var(--surface);
  box-shadow: 0 1px 3px rgba(60, 64, 67, 0.12);
  transition: box-shadow 0.2s ease;
}
.carousel-track .c-item:hover { box-shadow: 0 6px 18px rgba(60, 64, 67, 0.2); }
.carousel-track .c-item img {
  width: 100%; height: 100%; object-fit: cover; transition: transform 0.45s ease;
  -webkit-user-drag: none; user-select: none;
}
.carousel-track .c-item:hover img { transform: scale(1.045); }
.carousel-track .c-item .cap {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 14px 12px;
  background: linear-gradient(transparent, rgba(32, 33, 36, 0.75));
  color: #fff; font-size: 12px; opacity: 0; transition: opacity 0.22s ease;
}
.carousel-track .c-item:hover .cap { opacity: 1; }
.carousel-track .c-item[hidden] { display: none; }
/* 视频：只显示封面帧，点击才加载 */
.carousel-track .c-item.v-item { width: 300px; aspect-ratio: 3 / 4; cursor: pointer; }
.carousel-track .c-item.v-item img { width: 100%; height: 100%; object-fit: cover; }
.carousel-track .c-item.v-item .play {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  pointer-events: none;
}
.carousel-track .c-item.v-item .play span {
  width: 56px; height: 56px; border-radius: 50%; background: rgba(255, 255, 255, 0.92);
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  color: var(--blue); padding-left: 4px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25); transition: transform 0.2s ease;
}
.carousel-track .c-item.v-item:hover .play span { transform: scale(1.1); }
.carousel-track .c-item.v-item .dur {
  position: absolute; top: 10px; right: 10px; background: rgba(32, 33, 36, 0.75);
  color: #fff; font-size: 11px; padding: 3px 7px; border-radius: 5px; letter-spacing: 0.02em;
}
.carousel-subhead { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 14px; }
.carousel-subhead .gallery-group-title { margin-bottom: 0; }
.carousel-note { font-size: 12.5px; color: var(--muted); }

/* 左右箭头 */
.cnav {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.95); color: var(--ink);
  font-size: 22px; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 10px rgba(60, 64, 67, 0.2); transition: all 0.18s ease;
}
.cnav:hover { color: var(--blue); border-color: var(--blue); }
.cnav.prev { left: -18px; }
.cnav.next { right: -18px; }
.cnav[disabled] { opacity: 0.3; pointer-events: none; }

/* 底部进度条 + 提示 */
.carousel-foot { display: flex; align-items: center; gap: 14px; margin-top: 2px; }
.carousel-hint { font-size: 12px; color: var(--muted); }
.carousel-bar { flex: 0 1 200px; height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; }
.carousel-bar i { display: block; height: 100%; background: var(--blue); width: 20%; transition: width 0.12s linear; }

/* ---------- 大图查看（Lightbox） ---------- */
.lb {
  position: fixed; inset: 0; z-index: 200; background: rgba(32, 33, 36, 0.93);
  display: none; align-items: center; justify-content: center;
  touch-action: pan-y;        /* 水平交给 JS swipe，垂直保留原生滚动 */
  -webkit-user-select: none; user-select: none;
}
.lb.open { display: flex; }
.lb img, .lb video {
  display: none; width: auto; height: auto;
  max-width: 92vw; max-height: 82vh; object-fit: contain; border-radius: 8px;
}
.lb.show-img img { display: block; }
.lb.show-video video { display: block; max-height: 84vh; background: #000; }
.lb-nav, .lb-close { z-index: 2; }
.lb-close, .lb-nav {
  position: absolute; color: #fff; cursor: pointer; user-select: none;
  display: flex; align-items: center; justify-content: center;
}
.lb-close { top: 16px; right: 22px; font-size: 32px; opacity: 0.8; }
.lb-nav {
  top: 50%; transform: translateY(-50%); font-size: 26px;
  width: 50px; height: 50px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
}
.lb-nav:hover { background: rgba(255, 255, 255, 0.26); }
.lb-prev { left: 20px; }
.lb-next { right: 20px; }
.lb-cap {
  position: absolute; bottom: 24px; left: 0; right: 0; text-align: center;
  color: #fff; font-size: 13px; opacity: 0.8;
}
.video-strip { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 16px; }
.video-box { border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 9; position: relative; }
.video-box .play {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
}
.video-box .play span {
  width: 56px; height: 56px; border-radius: 50%; background: rgba(255,255,255,0.9);
  display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--blue);
}

/* ---------- 展望 ---------- */
.outlook { background: var(--surface); }
.outlook .section-title { color: var(--ink); }
.outlook .section-desc { color: var(--muted); }
.outlook .section-kicker { color: var(--blue); }
.outlook-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px; }
.outlook-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.outlook-card h3 { font-size: 17px; font-weight: 500; margin-bottom: 8px; color: var(--blue); }
.outlook-card p { font-size: 13.5px; color: var(--muted); }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); padding: 40px 0; text-align: center; }
.footer .names { font-size: 18px; font-weight: 500; color: var(--ink); }
.footer .note { font-size: 12.5px; color: var(--muted); margin-top: 8px; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero-grid, .family-grid { grid-template-columns: 1fr; gap: 28px; }
  .values-grid, .outlook-grid { grid-template-columns: 1fr; }
  .child-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-logo-sub { display: none; }     /* 副标题留 logo 主体，避免挤占 */
  .nav-logo-divider { display: none; }
}

@media (max-width: 560px) {
  .hero { padding: 48px 0 40px; }
  section { padding: 52px 0; }
  .container { padding: 0 20px; }
  .carousel-track { gap: 10px; }
  .carousel-track .c-item { width: 74vw; }
  .carousel-track .c-item.v-item { width: 86vw; }
  .cnav { display: none; }          /* 手机上靠手指滑动 */
  .carousel-bar { flex-basis: 120px; }
  .nav-cta { font-size: 11px; padding: 4px 9px; }
}

/* 触屏设备隐藏箭头（用手指滑） */
@media (hover: none) {
  .cnav { display: none; }
}