/* ============================================================
   EIGHT-G 八克眼镜 · 静态官网 v5 (白底编辑式)
   配色: 白色主背景 + 品牌橙 accent
   ============================================================ */
:root {
  --bg: #ffffff;
  --bg-2: #fafafa;
  --card: #ffffff;
  --line: #e8e8e8;
  --line-2: #d0d0d0;
  --text: #1a1a1a;
  --text-2: #555;
  --muted: #888;
  --faint: #b0b0b0;
  --accent: #ff7a18;
  --maxw: 1280px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.7;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }

/* ===== 顶部导航 (深色) ===== */
.site-header {
  position: sticky; top: 0; z-index: 99;
  background: rgba(0,0,0,.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.header-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 40px;
  height: 76px; display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 32px; filter: brightness(0) invert(1); }
.brand-name { font-size: 18px; letter-spacing: 3px; font-weight: 600; color: #fff; }
.brand-name small { display: block; font-size: 9px; letter-spacing: 6px; color: rgba(255,255,255,.6); font-weight: 400; }
.main-nav { display: flex; gap: 4px; }
.main-nav a {
  padding: 8px 20px; font-size: 14px; letter-spacing: 2px; color: rgba(255,255,255,.75);
  transition: color .25s; position: relative;
}
.main-nav a:hover { color: #fff; }
.main-nav a.active { color: #fff; }
.main-nav a.active::after {
  content: ""; position: absolute; left: 20px; right: 20px; bottom: 4px;
  height: 1px; background: var(--accent);
}

/* ===== 编辑式分栏 ===== */
.editorial { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; padding: 60px 0; }
.editorial .num { font-family: Georgia, serif; font-size: 72px; font-style: italic; line-height: 1; color: var(--accent); }
.editorial .title { margin-top: 8px; font-size: 42px; letter-spacing: 8px; font-weight: 600; line-height: 1.2; color: var(--text); }
.editorial .title small { display: block; margin-top: 8px; font-size: 16px; letter-spacing: 4px; color: var(--muted); font-weight: 400; }
.editorial .body { margin-top: 32px; color: var(--text-2); font-size: 16px; line-height: 2; max-width: 520px; }
.editorial .body p + p { margin-top: 14px; }
.editorial .photo { width: 100%; }
.editorial .photo img { width: 100%; height: auto; display: block; }
.editorial .photo-cap { display: block; margin-top: 18px; text-align: center; font-size: 12px; letter-spacing: 6px; color: var(--faint); }

/* 板块标题里使用的大号斜体编号(.section-num),与 .editorial .num 风格统一 */
.section-num { font-family: Georgia, serif; font-size: 72px; font-style: italic; line-height: 1; color: var(--accent); }

/* ===== 按钮 ===== */
.btn {
  display: inline-block; margin-top: 36px; padding: 14px 38px;
  background: var(--text); color: #fff; border: 1px solid var(--text);
  font-size: 13px; letter-spacing: 4px; transition: all .3s var(--ease);
  font-family: inherit;
}
.btn:hover { background: transparent; color: var(--text); }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--line-2); }
.btn.ghost:hover { background: var(--text); color: #fff; border-color: var(--text); }
.btn.accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.accent:hover { background: transparent; color: var(--accent); }

/* ===== 全宽 banner(首页 hero) ===== */
.full-banner { position: relative; width: 100%; overflow: hidden; }
.full-banner img { width: 100%; height: auto; display: block; }

/* ===== 双 banner ===== */
.duo-banner { display: grid; grid-template-columns: 1fr 1fr; }
.duo-banner figure { margin: 0; overflow: hidden; position: relative; }
.duo-banner img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 1s var(--ease); }
.duo-banner figure:hover img { transform: scale(1.03); }

/* ===== 产品网格 ===== */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.p-card {
  background: #fff; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  transition: background .3s;
  color: var(--text);
}
.p-card:hover { background: var(--bg-2); }
.p-card .ph { aspect-ratio: 1 / 1.05; overflow: hidden; background: #fff; }
.p-card .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.p-card:hover .ph img { transform: scale(1.04); }
.p-card .meta { padding: 24px 26px 28px; }
.p-card .meta .row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.p-card .meta h3 { font-size: 19px; letter-spacing: 1px; color: var(--text); }
.p-card .meta .code { font-family: Georgia, serif; font-size: 13px; color: var(--muted); letter-spacing: 2px; }
.p-card .meta p { margin-top: 10px; font-size: 13px; color: var(--muted); letter-spacing: 1px; }
.p-card .meta .series {
  display: inline-block; margin-top: 14px; font-size: 11px; color: var(--accent);
  border: 1px solid var(--accent); padding: 3px 10px; letter-spacing: 2px;
}

/* ===== 系列总览表 ===== */
.series-table { width: 100%; border-collapse: collapse; font-size: 15px; color: var(--text); }
.series-table th, .series-table td { text-align: left; padding: 22px 24px; border-bottom: 1px solid var(--line); letter-spacing: 2px; }
.series-table th { color: var(--accent); font-weight: 400; font-size: 13px; letter-spacing: 4px; background: var(--bg-2); }
.series-table td b { font-weight: 600; letter-spacing: 1px; }
.series-table tr:hover td { background: var(--bg-2); }

/* ===== 通用页面头 ===== */
.page-hero {
  padding: 110px 0 80px; text-align: center;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(800px 280px at 50% -50px, rgba(255,122,24,.08), transparent 60%),
    var(--bg);
}
.page-hero .en { font-size: 13px; letter-spacing: 8px; color: var(--accent); text-transform: uppercase; margin-bottom: 18px; }
.page-hero h1 { font-size: 56px; letter-spacing: 12px; font-weight: 600; color: var(--text); }
.page-hero p { margin-top: 18px; color: var(--muted); font-size: 15px; letter-spacing: 3px; }

/* ===== 时间轴 ===== */
.timeline { max-width: 820px; margin: 0 auto; border-left: 1px solid var(--line-2); padding-left: 40px; }
.tl-item { position: relative; padding: 0 0 36px; }
.tl-item::before {
  content: ""; position: absolute; left: -47px; top: 8px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
}
.tl-item:last-child { padding-bottom: 0; }
.tl-item .date { color: var(--accent); font-size: 13px; letter-spacing: 3px; font-weight: 600; }
.tl-item .title { margin-top: 6px; font-size: 18px; letter-spacing: 1px; color: var(--text); }
.tl-item p { margin-top: 6px; color: var(--muted); font-size: 14px; letter-spacing: 1px; }

/* ===== 信息卡 / 特点卡 ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.info-card, .feat-card {
  background: #fff; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 38px 32px; transition: background .3s;
  color: var(--text);
}
.info-card:hover, .feat-card:hover { background: var(--bg-2); }
.info-card .k { font-size: 12px; letter-spacing: 4px; color: var(--accent); }
.info-card .v { margin-top: 12px; font-size: 24px; letter-spacing: 2px; font-weight: 600; color: var(--text); }
.info-card .v small { font-size: 13px; color: var(--muted); letter-spacing: 2px; font-weight: 400; margin-left: 6px; }
.feat-card .n { font-family: Georgia, serif; font-size: 32px; color: var(--accent); line-height: 1; font-style: italic; }
.feat-card h3 { margin-top: 18px; font-size: 18px; letter-spacing: 4px; color: var(--text); }
.feat-card p { margin-top: 12px; color: var(--muted); font-size: 13px; letter-spacing: 1px; line-height: 1.8; }

/* ===== 品牌价值三栏 ===== */
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.value {
  padding: 50px 36px; text-align: left;
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: #fff;
}
.value .n { font-family: Georgia, serif; font-size: 48px; color: var(--accent); line-height: 1; font-style: italic; }
.value h3 { margin-top: 18px; font-size: 19px; letter-spacing: 6px; color: var(--text); }
.value p { margin-top: 14px; color: var(--muted); font-size: 13px; letter-spacing: 1px; line-height: 1.9; }

/* ===== 形象页 — 工作室大片网格(白底重排版) ===== */
.studio-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 0; border: 1px solid var(--line); }
.studio-grid figure { margin: 0; overflow: hidden; position: relative; background: var(--bg-2); }
.studio-grid img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .8s var(--ease); }
.studio-grid figure:hover img { transform: scale(1.04); }
.studio-grid figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 20px 24px 22px;
  background: linear-gradient(0deg, rgba(0,0,0,.78), transparent);
  color: #fff;
}
.studio-grid figcaption b { display: block; font-size: 14px; letter-spacing: 4px; }
.studio-grid figcaption span { display: block; font-size: 11px; letter-spacing: 3px; color: rgba(255,255,255,.7); margin-top: 4px; text-transform: uppercase; }
.studio-grid .sg-wide { grid-column: span 7; aspect-ratio: 16/10; }
.studio-grid .sg-tall { grid-column: span 5; aspect-ratio: 4/5; }

/* ===== 形象页 — 形象人主视觉 ===== */
.spokesperson-hero {
  position: relative; overflow: hidden; background: var(--bg-2);
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  border-bottom: 1px solid var(--line);
}
.spokesperson-hero .ph-side { background: #fff; padding: 60px 60px 60px 80px; display: flex; flex-direction: column; justify-content: center; }
.spokesperson-hero .ph-side .num { font-family: Georgia, serif; font-size: 80px; font-style: italic; line-height: 1; color: var(--accent); }
.spokesperson-hero .ph-side .nm { margin-top: 18px; font-size: 38px; letter-spacing: 6px; font-weight: 600; color: var(--text); }
.spokesperson-hero .ph-side .role { margin-top: 12px; color: var(--muted); font-size: 13px; letter-spacing: 4px; text-transform: uppercase; }
.spokesperson-hero .ph-side .quote { margin-top: 32px; font-size: 16px; line-height: 2; color: var(--text-2); letter-spacing: 1px; }
.spokesperson-hero .ph-side .more { margin-top: 28px; }
.spokesperson-hero .ph-img { position: relative; aspect-ratio: 4/5; background: var(--bg-2); overflow: hidden; }
.spokesperson-hero .ph-img img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ===== 页脚 ===== */
.site-footer { border-top: 1px solid var(--line); padding: 50px 0 40px; margin-top: 0; }
.footer-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 40px;
  display: flex; align-items: center; justify-content: space-between;
  color: var(--muted); font-size: 13px; letter-spacing: 2px;
}
.footer-inner .right { display: flex; gap: 22px; }
.footer-inner a:hover { color: var(--text); }

/* ===== 小屏适配 ===== */
@media (max-width: 1024px) {
  .studio-grid .sg-wide { grid-column: span 12; aspect-ratio: 16/10; }
  .studio-grid .sg-tall { grid-column: span 12; aspect-ratio: 4/5; }
}
@media (max-width: 920px) {
  .main-nav a { padding: 8px 10px; }
  .editorial, .duo-banner, .grid-2, .grid-3, .values, .spokesperson-hero { grid-template-columns: 1fr; gap: 0; }
  .spokesperson-hero .ph-side { padding: 40px 24px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .container, .header-inner, .footer-inner { padding-left: 20px; padding-right: 20px; }
  .editorial { padding: 60px 0; }
  .editorial .num { font-size: 64px; }
  .editorial .title { font-size: 32px; letter-spacing: 4px; }
}
@media (max-width: 560px) {
  .product-grid, .values, .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 36px; letter-spacing: 6px; }
}