@charset "UTF-8";
/* ============================================================================
 *  主站样式 · main.css
 * ----------------------------------------------------------------------------
 *  与防伪查验页共用同一套品牌色（深绿 + 金色强调），但主站走 Apple 风格留白：
 *  大标题、大图、克制的分隔线、几乎没有装饰。
 *  原生 PHP 直出，无构建链、无外部依赖。
 * ========================================================================== */

:root{
  --g-950:#01120c;
  --g-900:#021b12;
  --g-850:#03301f;
  --g-800:#07472f;
  --g-700:#0d6344;
  --g-600:#12855a;
  --g-500:#18a06d;

  --gold-1:#f2e2b6;
  --gold-2:#d3b878;
  --gold-3:#c9ac6b;
  --gold-ink:#354024;

  --ink:#123024;
  --ink-2:#4f6a5c;
  --ink-3:#8ba398;
  --line:#e6eeea;
  --bg:#fbfcfa;
  --card:#ffffff;

  --r:18px;
  --r-sm:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:-apple-system,BlinkMacSystemFont,"HarmonyOS Sans SC","MiSans","PingFang SC",
         "Noto Sans SC","Source Han Sans SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:var(--font);font-size:15px;line-height:1.65;color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--g-600);outline-offset:3px}

/* 深色织物底：只在 body 需要时启用（防伪页 / 深色区块） */
.bg{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(128% 68% at 66% -8%,var(--g-700) 0%,var(--g-800) 30%,
             var(--g-850) 62%,var(--g-900) 100%)}
.bg .weave{position:absolute;inset:0;opacity:.15;mix-blend-mode:soft-light;
  background-image:
    repeating-linear-gradient( 48deg, rgba(255,255,255,.10) 0 1px, rgba(255,255,255,0) 1px 3px),
    repeating-linear-gradient(-42deg, rgba(0,0,0,.18)        0 1px, rgba(0,0,0,0)        1px 3px)}

.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 22px}

/* ===== 顶部导航 ========================================================= */
.topnav{
  position:sticky;top:0;z-index:20;
  background:rgba(2,27,18,.92);
  -webkit-backdrop-filter:blur(14px) saturate(125%);backdrop-filter:blur(14px) saturate(125%);
  border-bottom:1px solid rgba(255,255,255,.10);
}
.topnav .wrap{display:flex;align-items:center;gap:16px;height:60px}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand-bar{width:3.5px;height:20px;border-radius:2px;flex:0 0 auto;
  background:linear-gradient(180deg,var(--gold-1),var(--gold-2))}
.brand-txt{font-size:16px;font-weight:800;letter-spacing:.06em;line-height:1.1}
.brand-txt small{display:block;font-size:8.5px;font-weight:500;letter-spacing:.18em;
  color:rgba(255,255,255,.42);margin-top:3px}
.nav-links{margin-left:auto;display:flex;gap:4px}
.nav-links a{padding:7px 14px;border-radius:999px;font-size:13.5px;
  color:rgba(255,255,255,.72);transition:background .16s var(--ease),color .16s var(--ease)}
.nav-links a:hover{background:rgba(255,255,255,.1);color:#fff}

/* ===== 首屏 ============================================================= */
.hero{background:linear-gradient(178deg,var(--g-850) 0%,var(--g-900) 100%);
  color:#fff;padding:64px 0 56px}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;
  font-size:11px;letter-spacing:.18em;color:rgba(255,255,255,.48);margin-bottom:18px}
.hero h1{font-size:clamp(28px,5.2vw,46px);font-weight:900;letter-spacing:.02em;line-height:1.15}
.hero p{margin-top:14px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.66);max-width:36em}
.hero .rule{width:52px;height:3px;border-radius:2px;margin-top:24px;
  background:linear-gradient(90deg,var(--gold-1),var(--gold-3))}

/* ===== 区块标题 ========================================================= */
.section{padding:52px 0 68px}
.sec-head{display:flex;align-items:flex-end;gap:14px;margin-bottom:26px;flex-wrap:wrap}
.sec-head h2{font-size:20px;font-weight:800;letter-spacing:.02em;display:flex;align-items:center;gap:10px}
.sec-head h2::before{content:'';width:3.5px;height:18px;border-radius:2px;
  background:linear-gradient(180deg,var(--gold-1),var(--gold-3))}
.sec-head .spacer{flex:1 1 auto}
.sec-head .count{font-size:12.5px;color:var(--ink-3)}

/* ===== 产品网格 ========================================================= */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:22px}
.pcard{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
}
.pcard:hover{transform:translateY(-3px);border-color:#d5e4dc;
  box-shadow:0 22px 44px -26px rgba(7,71,47,.4)}
.pcard-img{position:relative;aspect-ratio:4/3;background:#f2f7f4;overflow:hidden}
.pcard-img img{width:100%;height:100%;object-fit:cover;
  transition:transform .5s var(--ease)}
.pcard:hover .pcard-img img{transform:scale(1.035)}
.pcard-img .ph{position:absolute;inset:0;display:grid;place-items:center;
  font-size:11.5px;letter-spacing:.1em;color:var(--ink-3)}
.pcard-bd{padding:16px 18px 18px;display:flex;flex-direction:column;gap:7px;flex:1 1 auto}
.pcard-title{font-size:16px;font-weight:800;letter-spacing:.02em;line-height:1.4}
.pcard-model{font-size:12px;letter-spacing:.06em;color:var(--ink-3);
  font-variant-numeric:tabular-nums}
.pcard-spec{margin-top:2px;font-size:12.5px;line-height:1.7;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pcard-foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;
  justify-content:space-between;border-top:1px solid var(--line)}
.pcard-foot .go{font-size:12.5px;font-weight:700;letter-spacing:.04em;color:var(--g-700)}
.pcard:hover .pcard-foot .go{color:var(--g-600)}

/* ===== 产品详情 ========================================================= */
.crumb{padding:22px 0 0;font-size:12.5px;color:var(--ink-3)}
.crumb a:hover{color:var(--g-600)}
.detail{padding:20px 0 68px}
.detail-top{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
  gap:44px;align-items:start}
.gallery{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}
.gallery .main-img{aspect-ratio:4/3;background:#f2f7f4;overflow:hidden}
.gallery .main-img img{width:100%;height:100%;object-fit:cover}
.gallery .ph{aspect-ratio:4/3;display:grid;place-items:center;
  font-size:12px;letter-spacing:.12em;color:var(--ink-3);background:#f6faf8}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(70px,1fr));gap:8px;
  padding:10px;border-top:1px solid var(--line)}
.thumbs button{padding:0;border:1px solid var(--line);border-radius:var(--r-sm);
  overflow:hidden;aspect-ratio:1/1;background:#f6faf8;cursor:pointer;
  transition:border-color .16s var(--ease)}
.thumbs button.is-on{border-color:var(--g-600);box-shadow:0 0 0 2px rgba(18,133,90,.16)}
.thumbs img{width:100%;height:100%;object-fit:cover}

.detail-info h1{font-size:clamp(22px,3.6vw,30px);font-weight:900;letter-spacing:.02em;line-height:1.28}
.detail-info .model{margin-top:9px;font-size:13px;letter-spacing:.08em;color:var(--ink-3)}
.detail-info .rule{width:46px;height:3px;border-radius:2px;margin:20px 0;
  background:linear-gradient(90deg,var(--gold-1),var(--gold-3))}

.spec-list{list-style:none;border-top:1px solid var(--line)}
.spec-list li{display:grid;grid-template-columns:92px minmax(0,1fr);gap:14px;
  padding:11px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.spec-list .k{color:var(--ink-3)}
.spec-list .v{color:var(--ink);font-weight:600;overflow-wrap:anywhere}

.article{margin-top:44px;padding-top:38px;border-top:1px solid var(--line)}
.article h2{font-size:18px;font-weight:800;letter-spacing:.02em;margin-bottom:16px}
.article-body{font-size:15px;line-height:1.95;color:var(--ink-2);white-space:pre-wrap;
  overflow-wrap:anywhere}

/* ===== 空态与分页 ======================================================= */
.emptybox{padding:70px 20px;text-align:center;color:var(--ink-3)}
.emptybox b{display:block;font-size:16px;color:var(--ink-2);margin-bottom:6px}
.pager{display:flex;gap:6px;align-items:center;flex-wrap:wrap;justify-content:center;
  padding:36px 0 0}
.pg{display:inline-flex;align-items:center;justify-content:center;
  min-width:36px;height:36px;padding:0 12px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;font-size:13px;color:var(--ink-2)}
.pg:hover{background:#f6faf8;border-color:#d5e4dc;color:var(--ink)}
.pg.is-on{background:linear-gradient(178deg,var(--g-700),var(--g-800));border-color:var(--g-800);
  color:#fff;font-weight:800}
.pg.is-off{opacity:.45;pointer-events:none}
.pg-sep{padding:0 4px;color:var(--ink-3)}

/* ===== 页脚 ============================================================= */
.sitefoot{background:var(--g-900);color:rgba(255,255,255,.5);padding:34px 0}
.sitefoot .wrap{text-align:center}
.foot-line{font-size:12.5px}
.foot-copy{margin-top:7px;font-size:11px;letter-spacing:.06em;color:rgba(255,255,255,.32)}

/* ===== 图片懒加载淡入 =================================================== */
img[data-src]{opacity:0}
img.is-loaded{opacity:1;transition:opacity .45s var(--ease)}

/* ===== 响应式 =========================================================== */
@media (max-width:860px){
  .detail-top{grid-template-columns:minmax(0,1fr);gap:26px}
  .hero{padding:46px 0 40px}
  .section{padding:38px 0 52px}
}
@media (max-width:520px){
  .grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px}
  .pcard-bd{padding:13px 14px 15px}
  .pcard-title{font-size:14.5px}
  .wrap{padding:0 16px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}