/* ==========================================================================
   中医方药官网样式 —— 深棕黑 / 宣纸米 / 鎏金 配色，与软件界面风格一致
   ========================================================================== */

:root{
  --ink:#1a150c;          /* 主深色（近黑棕） */
  --ink-2:#241d10;
  --paper:#f4efe4;        /* 宣纸底色 */
  --paper-2:#e7dfce;
  --tan:#dcd6c9;
  --gold:#c9a25e;         /* 鎏金 */
  --gold-light:#e8d9b4;
  --text:#3a3021;
  --text-light:#6f634e;
  --green:#2d6e2d;
  --line:rgba(26,21,12,.12);
  --shadow:0 10px 34px rgba(40,28,10,.12);
  --radius:14px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","微软雅黑","PingFang SC",sans-serif;
  color:var(--text);
  background:var(--paper);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img,video{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{width:min(1180px,92%);margin:0 auto}
.hide-m{display:inline}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-block;text-align:center;cursor:pointer;
  font-weight:700;border-radius:8px;letter-spacing:2px;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  border:1px solid transparent;white-space:nowrap;
}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-lg{padding:15px 38px;font-size:17px}
.btn-block{display:block;width:100%}
.btn-gold{
  color:#231a08;
  background:linear-gradient(135deg,#e3c98f 0%,#c9a25e 55%,#b4894a 100%);
  box-shadow:0 6px 18px rgba(160,120,50,.35);
}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(160,120,50,.45)}
.btn-ghost{color:var(--gold-light);border-color:rgba(232,217,180,.55);background:rgba(255,255,255,.04)}
.btn-ghost:hover{background:rgba(232,217,180,.12);transform:translateY(-2px)}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(20,16,9,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(201,162,94,.25);
}
.nav-inner{
  width:min(1180px,94%);height:66px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand-seal{
  width:40px;height:40px;border-radius:8px;flex:none;
  display:flex;align-items:center;justify-content:center;
  font-family:"STKaiti","KaiTi","楷体",serif;font-size:24px;font-weight:700;
  color:#231a08;
  background:linear-gradient(135deg,#e8d5a6,#c9a25e);
  box-shadow:0 2px 8px rgba(0,0,0,.4), inset 0 0 0 2px rgba(255,255,255,.25);
}
.brand-text{font-family:"STKaiti","KaiTi","楷体",serif;font-size:21px;letter-spacing:3px;line-height:1.1}
.brand-text small{display:block;font-family:"Microsoft YaHei";font-size:9px;letter-spacing:3px;color:var(--gold);opacity:.85}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{color:#d8cfb8;font-size:15px;transition:color .2s}
.nav-links a:hover{color:var(--gold-light)}
.nav-links .btn{color:#231a08}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--gold-light);margin:5px 0;transition:.3s}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;padding:150px 0 130px;
  background:var(--ink);color:#f3ecd9;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 0%,rgba(201,162,94,.20),transparent 60%),
    radial-gradient(ellipse 50% 60% at 10% 100%,rgba(201,162,94,.10),transparent 60%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80'%3E%3Cpath d='M40 8 L72 40 L40 72 L8 40 Z' fill='none' stroke='%23e8d9b4' stroke-width='1'/%3E%3C/svg%3E");
  background-size:80px 80px;
}
.hero-inner{position:relative;text-align:center}
.hero-badge{
  display:inline-block;padding:7px 22px;border-radius:30px;font-size:14px;letter-spacing:3px;
  color:var(--gold-light);border:1px solid rgba(201,162,94,.5);margin-bottom:26px;
  background:rgba(201,162,94,.08);
}
.hero-title{
  font-family:"STKaiti","KaiTi","楷体",serif;
  font-size:clamp(38px,6vw,66px);font-weight:700;letter-spacing:10px;
  background:linear-gradient(180deg,#f6e8c8 20%,#c9a25e 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 2px 30px rgba(201,162,94,.25);
}
.hero-sub{margin:24px 0 38px;font-size:clamp(15px,2vw,18px);color:#cfc4aa;letter-spacing:2px}
.hero-actions{display:flex;gap:18px;justify-content:center;flex-wrap:wrap}
.hero-points{
  margin-top:46px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap;
}
.hero-points li{
  padding:8px 20px;font-size:14px;letter-spacing:2px;color:#e8d9b4;
  border:1px solid rgba(232,217,180,.28);border-radius:6px;background:rgba(255,255,255,.03);
}
.hero-wave{
  position:absolute;left:0;right:0;bottom:-1px;height:60px;
  background:var(--paper);
  clip-path:polygon(0 60%,12% 45%,28% 58%,44% 38%,60% 55%,78% 35%,100% 52%,100% 100%,0 100%);
}

/* ---------- 数据条 ---------- */
.stats{background:var(--ink-2);padding:40px 0;border-bottom:1px solid rgba(201,162,94,.25)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat b{
  display:block;font-size:38px;color:var(--gold-light);font-family:Georgia,serif;
}
.stat b::after{content:"+";font-size:22px;margin-left:2px;color:var(--gold)}
.stat b.stat-ai{
  font-family:"STKaiti","KaiTi","楷体",serif;font-size:40px;letter-spacing:2px;
  background:linear-gradient(180deg,#f6e8c8 20%,#c9a25e 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat b.stat-ai::after{content:""}
.stat span{font-size:14px;color:#b3a78c;letter-spacing:1px}

/* ---------- 通用版块 ---------- */
.section{padding:86px 0}
.section-alt{background:var(--paper-2)}
.sec-head{text-align:center;margin-bottom:54px}
.sec-head h2{
  display:inline-block;position:relative;
  font-family:"STKaiti","KaiTi","楷体",serif;font-size:34px;letter-spacing:8px;color:var(--ink);
  padding:0 34px;
}
.sec-head h2::before,.sec-head h2::after{
  content:"";position:absolute;top:50%;width:26px;height:1px;background:var(--gold);
}
.sec-head h2::before{left:-4px}
.sec-head h2::after{right:-4px}
.sec-head p{margin-top:14px;color:var(--text-light);font-size:15px;letter-spacing:1px}

/* ---------- 功能卡片 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature{
  background:#fffdf7;border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 28px;box-shadow:var(--shadow);transition:transform .25s ease;
}
.feature:hover{transform:translateY(-6px)}
.feature-ic{
  width:58px;height:58px;border-radius:12px;margin-bottom:18px;
  display:flex;align-items:center;justify-content:center;
  font-family:"STKaiti","KaiTi","楷体",serif;font-size:28px;color:#2b2110;font-weight:700;
  background:linear-gradient(135deg,#f0e0ba,#d2b072);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.5),0 4px 10px rgba(140,100,40,.25);
}
.feature h3{font-size:19px;margin-bottom:10px;letter-spacing:2px;color:var(--ink)}
.feature p{font-size:14.5px;color:var(--text-light)}

/* ---------- 产品组成 ---------- */
.module-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.module{
  position:relative;background:#fffdf7;border:1px solid var(--line);border-radius:var(--radius);
  padding:42px 38px 36px;box-shadow:var(--shadow);
}
.module-tag{
  position:absolute;top:-14px;left:32px;
  padding:5px 18px;border-radius:20px;font-size:13px;letter-spacing:2px;
  color:#2b2110;font-weight:700;background:linear-gradient(135deg,#e3c98f,#c9a25e);
}
.module h3{
  font-family:"STKaiti","KaiTi","楷体",serif;font-size:28px;letter-spacing:4px;
  color:var(--ink);margin-bottom:18px;
}
.module li{
  position:relative;padding-left:26px;margin-bottom:12px;font-size:15px;color:var(--text);
}
.module li::before{
  content:"";position:absolute;left:2px;top:9px;width:9px;height:9px;border-radius:2px;
  background:linear-gradient(135deg,#d9bd7e,#b08844);transform:rotate(45deg);
}

/* 实机截图框 */
.module-shot{
  position:relative;display:block;margin:2px 0 22px;border-radius:12px;overflow:hidden;
  aspect-ratio:1200/651;background:#1a1409;
  border:1px solid #d8c391;
  box-shadow:0 10px 24px rgba(70,48,14,.18),inset 0 0 0 1px rgba(255,255,255,.55);
}
.module-shot img{
  display:block;width:100%;height:100%;object-fit:cover;object-position:top center;
  transition:transform .4s ease;
}
.module:hover .module-shot img{transform:scale(1.045)}
.module-zoom{
  position:absolute;right:12px;bottom:12px;padding:5px 14px;border-radius:16px;
  font-size:12.5px;letter-spacing:2px;color:#efe2c0;background:rgba(20,15,7,.72);
  border:1px solid rgba(214,185,120,.45);
  opacity:0;transform:translateY(6px);transition:.25s;cursor:zoom-in;
}
.module-shot:hover .module-zoom{opacity:1;transform:translateY(0)}

/* 点击看大图 */
.lightbox{
  position:fixed;inset:0;z-index:2000;display:none;align-items:center;justify-content:center;
  padding:5vh 5vw;background:rgba(14,10,5,.88);
}
.lightbox.open{display:flex}
.lightbox img{max-width:100%;max-height:86vh;border-radius:8px;border:1px solid rgba(214,185,120,.45);box-shadow:0 20px 60px rgba(0,0,0,.6)}
.lightbox figcaption{position:absolute;bottom:2.6vh;left:0;right:0;text-align:center;color:#e6d6ac;font-size:14px;letter-spacing:1.5px}
.lightbox-close{position:absolute;top:16px;right:26px;color:#e6d6ac;font-size:36px;line-height:1;cursor:pointer;user-select:none}
.lightbox-close:hover{color:#fff}

/* ---------- 视频教程 ---------- */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{
  background:#fffdf7;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
}
.video-box{position:relative;aspect-ratio:16/10;background:#14100a}
.video-box video{width:100%;height:100%;object-fit:contain;background:#14100a}
.video-box video::-webkit-media-controls-panel{background-image:linear-gradient(transparent,rgba(0,0,0,.55))}
.video-placeholder{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:var(--gold-light);
  background:
    radial-gradient(circle at 50% 42%,rgba(201,162,94,.18),transparent 55%),#14100a;
}
.video-placeholder span{
  text-align:center;font-family:"STKaiti","KaiTi","楷体",serif;font-size:22px;letter-spacing:4px;line-height:1.8;
}
.video-placeholder small{font-family:"Microsoft YaHei";font-size:13px;letter-spacing:2px;color:#9c8f70}
.video-card h4{padding:16px 18px;font-size:15.5px;letter-spacing:1px;color:var(--ink);font-weight:700}
.video-tip{text-align:center;margin-top:30px;color:var(--text-light);font-size:14.5px}

/* ---------- 下载 ---------- */
.dl-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:start}
.dl-card{
  background:#fffdf7;border:1px solid var(--line);border-radius:var(--radius);
  padding:44px 40px;box-shadow:var(--shadow);text-align:center;
}
.dl-icon{
  width:72px;height:72px;border-radius:50%;margin:0 auto 20px;
  display:flex;align-items:center;justify-content:center;
  font-family:"STKaiti","KaiTi","楷体",serif;font-size:34px;color:#2b2110;font-weight:700;
  background:linear-gradient(135deg,#f0e0ba,#d2b072);
  box-shadow:0 6px 16px rgba(140,100,40,.3);
}
.dl-card h3{font-size:22px;letter-spacing:2px;margin-bottom:14px;color:var(--ink)}
.dl-meta{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;font-size:14px;color:var(--text-light);margin-bottom:8px}
.dl-sys{font-size:13.5px;color:var(--text-light);margin-bottom:26px}
.dl-card .btn{margin-bottom:14px}
.dl-note{font-size:13px;color:#9a8d74;margin-top:12px}

/* 多通道下载进度 */
.dl-progress{margin:2px 0 14px;text-align:left}
.dl-bar{
  height:14px;border-radius:7px;background:#ece2c9;
  border:1px solid #d8c391;overflow:hidden;
}
.dl-bar i{
  display:block;height:100%;width:0;border-radius:7px;
  background:linear-gradient(90deg,#caa55f,#e3c98f);
  transition:width .25s ease;
}
.dl-info{
  display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;
  font-size:13.5px;color:#6d5c38;margin:9px 2px 2px;font-variant-numeric:tabular-nums;
}
.dl-info #dlPct{font-weight:700;color:#3a2d14}
.dl-status{font-size:13px;color:#9a8d74;margin:4px 2px 0;min-height:20px}
.dl-status.err{color:#b04636}
.dl-status.ok{color:#3f6f3a}
.dl-cancel{
  margin-top:8px;padding:6px 20px;font-size:13px;letter-spacing:2px;cursor:pointer;
  color:#6d5c38;background:transparent;border:1px solid #cbb783;border-radius:18px;
}
.dl-cancel:hover{background:#f3ead3}
.dl-plain{
  display:inline-block;font-size:13.5px;color:#8a6f3c;text-decoration:underline;
  text-underline-offset:3px;
}
.dl-plain:hover{color:#6d5628}
.dl-log{
  background:var(--ink);color:#d9ceb2;border-radius:var(--radius);padding:32px 30px;
}
.dl-log h4{
  font-family:"STKaiti","KaiTi","楷体",serif;font-size:21px;letter-spacing:4px;
  color:var(--gold-light);margin-bottom:18px;
}
.dl-log li{
  position:relative;padding-left:18px;margin-bottom:14px;font-size:14px;line-height:1.7;color:#bdb196;
}
.dl-log li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--gold)}
.dl-log b{color:var(--gold-light);margin-right:6px}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{
  background:#fffdf7;border:1px solid var(--line);border-radius:var(--radius);
  padding:40px 28px;text-align:center;box-shadow:var(--shadow);
}
.contact-ic{
  width:60px;height:60px;border-radius:12px;margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;
  font-family:"STKaiti","KaiTi","楷体",serif;font-size:28px;color:#2b2110;font-weight:700;
  background:linear-gradient(135deg,#f0e0ba,#d2b072);
}
.contact-card h3{font-size:18px;letter-spacing:2px;margin-bottom:12px;color:var(--ink)}
.contact-main{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  font-size:20px;font-weight:700;color:#8a5f22;letter-spacing:1px;margin-bottom:6px;
  font-family:"Microsoft YaHei","微软雅黑",sans-serif;
}
.contact-main a{color:#8a5f22}
.contact-main a:hover{color:#6e4a18}
.contact-card p{font-size:14px;color:var(--text-light)}

/* ---------- 软件简介 ---------- */
.about-lead{
  max-width:880px;margin:0 auto;text-align:center;
  font-size:17px;color:var(--text);letter-spacing:1px;line-height:2;
}
.about-cards{margin-top:44px}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#b3a78c;padding:54px 0 30px;border-top:2px solid rgba(201,162,94,.3)}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;gap:30px;justify-content:space-between}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-brand b{font-family:"STKaiti","KaiTi","楷体",serif;font-size:22px;letter-spacing:3px;color:var(--gold-light);display:block}
.footer-brand small{font-size:12.5px;color:#8e836c}
.footer-links{display:flex;gap:26px}
.footer-links a{color:#c9bda0;font-size:14px}
.footer-links a:hover{color:var(--gold-light)}
.footer-copy{width:100%;text-align:center;font-size:13px;color:#8e836c;margin-top:10px;border-top:1px solid rgba(255,255,255,.08);padding-top:20px}
.beian{margin-top:6px}
.beian a{color:#8e836c}
.beian a:hover{color:var(--gold-light)}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,#e3c98f,#b4894a);color:#231a08;
  display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;
  opacity:0;pointer-events:none;transition:opacity .3s, transform .3s;
  box-shadow:0 8px 20px rgba(90,60,15,.35);z-index:90;
}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-3px)}

/* ---------- 滚动显现动画 ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease, transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:960px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .dl-wrap{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:26px}
}
@media (max-width:720px){
  .nav-links{
    position:fixed;top:66px;left:0;right:0;
    background:rgba(20,16,9,.98);
    flex-direction:column;gap:0;padding:8px 0 16px;
    border-bottom:1px solid rgba(201,162,94,.3);
    transform:translateY(-130%);transition:transform .3s ease;
  }
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:14px 26px;width:100%;font-size:16px}
  .nav-links .btn{margin:8px 26px 0;width:calc(100% - 52px)}
  .nav-toggle{display:block}
  .hero{padding:120px 0 100px}
  .hero-title{letter-spacing:6px}
  .hide-m{display:none}
  .section{padding:64px 0}
  .feature-grid,.module-grid,.video-grid{grid-template-columns:1fr}
  .module{padding-top:36px}
  .footer-inner{flex-direction:column;text-align:center}
}