/* 凡星科技官网前台样式（合并后由运营中心统一提供）
   深色科技底 + 金色品牌色，与后台控制台同源变量，视觉保持一家。 */

:root {
  --bg: #0b0f1a;
  --bg2: #111726;
  --card: #151c2e;
  --line: rgba(255, 255, 255, .09);
  --txt: #e9edf6;
  --sub: #a8b3c7;
  --dim: #6f7c93;
  --gold: #e8b44a;
  --gold2: #f2c96b;
  --blue: #3b82f6;
  --green: #2fbf6f;
  --gutter: 20px;
}

html { -webkit-text-size-adjust: 100%; }

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { width: min(1180px, 100% - calc(var(--gutter) * 2)); margin: 0 auto; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 15, 26, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; gap: 28px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.logo img { height: 30px; width: auto; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--gold), #b8862a); color: #201802; font-weight: 800;
}
.logo small { display: block; font-size: 10px; letter-spacing: 2px; color: var(--dim); font-weight: 500; }
.nav-links { display: flex; gap: 22px; margin-left: auto; align-items: center; font-size: 14.5px; }
.nav-links a { color: var(--sub); padding: 6px 2px; border-bottom: 2px solid transparent; }
.nav-links a:hover { color: var(--txt); }
.nav-links a.on { color: var(--gold); border-bottom-color: var(--gold); }
.lang { display: flex; gap: 4px; border: 1px solid var(--line); border-radius: 20px; padding: 3px; }
.lang a { padding: 3px 11px; border-radius: 16px; font-size: 12.5px; color: var(--dim); }
.lang a.on { background: var(--gold); color: #201802; font-weight: 600; }
/* 汉堡按钮：默认隐藏，仅移动端显示（见下方媒体查询） */
.nav-burger { display: none; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 92px 0 86px; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(1100px 460px at 78% -10%, rgba(232, 180, 74, .16), transparent 62%),
    radial-gradient(800px 420px at 8% 110%, rgba(59, 130, 246, .16), transparent 60%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; opacity: .35;
  background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 54px 54px;
}
.hero-in { position: relative; display: grid; gap: 48px; grid-template-columns: 1.05fr .95fr; align-items: center; }
.chip {
  display: inline-block; padding: 5px 14px; border-radius: 20px; font-size: 12.5px;
  border: 1px solid rgba(232, 180, 74, .38); color: var(--gold2); letter-spacing: .5px;
}
.hero h1 { font-size: clamp(30px, 4.4vw, 50px); line-height: 1.22; margin: 20px 0 0; font-weight: 800; }
.hero h1 em { color: var(--gold); font-style: normal; }
.hero p { color: var(--sub); font-size: 17px; max-width: 480px; margin: 22px 0 0; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn {
  display: inline-block; padding: 11px 24px; border-radius: 10px; font-size: 14.5px; font-weight: 600;
  transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--gold); color: #201802; }
.btn-primary:hover { box-shadow: 0 8px 22px rgba(232, 180, 74, .28); }
.btn-ghost { border: 1px solid var(--line); color: var(--txt); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 38px; max-width: 470px; }
.stat { background: rgba(255, 255, 255, .045); border: 1px solid var(--line); border-radius: 12px; padding: 14px; text-align: center; }
.stat b { display: block; color: var(--gold); font-size: 21px; }
.stat span { font-size: 12px; color: var(--dim); }

/* 算力面板 */
.panel {
  border: 1px solid var(--line); border-radius: 20px; padding: 22px;
  background: rgba(255, 255, 255, .045); backdrop-filter: blur(6px);
}
.panel h3 { margin: 0 0 16px; font-size: 15px; color: var(--gold); display: flex; align-items: center; gap: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }
.prow { display: flex; justify-content: space-between; align-items: center; gap: 12px;
  background: rgba(255, 255, 255, .04); border-radius: 12px; padding: 12px 15px; margin-bottom: 9px; }
.prow span { color: var(--sub); font-size: 14px; }
.prow b { color: var(--gold2); font-size: 14.5px; }

/* ---------- 通用区块 ---------- */
.sec { padding: 74px 0; }
.sec.alt { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { margin-bottom: 34px; }
.sec-head h2 { font-size: 27px; margin: 0 0 8px; font-weight: 700; }
.sec-head p { color: var(--sub); margin: 0; font-size: 15px; }
.eyebrow { color: var(--gold); font-size: 12.5px; letter-spacing: 2.5px; text-transform: uppercase; font-weight: 600; }

.grid { display: grid; gap: 18px; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 24px;
  transition: transform .18s, border-color .18s;
}
.card:hover { transform: translateY(-3px); border-color: rgba(232, 180, 74, .34); }
.card h3 { margin: 0 0 10px; font-size: 17px; }
.card p { color: var(--sub); margin: 0; font-size: 14.5px; }
.card .ico { font-size: 24px; color: var(--gold); margin-bottom: 12px; display: block; }
.card ul { margin: 12px 0 0; padding-left: 18px; color: var(--sub); font-size: 14px; }
.card ul li { margin-bottom: 5px; }

/* 新闻卡 */
.news { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.ncard { background: var(--card); border: 1px solid var(--line); border-radius: 16px; overflow: hidden;
  transition: transform .18s, border-color .18s; }
.ncard:hover { transform: translateY(-3px); border-color: rgba(232, 180, 74, .34); }
.ncover { height: 168px; background: linear-gradient(135deg, #1b2438, #26314c); background-size: cover; background-position: center; }
.nbody { padding: 18px; }
.nbody h3 { margin: 0 0 8px; font-size: 16.5px; line-height: 1.5; }
.nbody p { color: var(--sub); font-size: 14px; margin: 0 0 12px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nmeta { color: var(--dim); font-size: 12.5px; display: flex; justify-content: space-between; align-items: center; }
.tag { display: inline-block; padding: 2px 9px; border-radius: 12px; font-size: 11.5px;
  background: rgba(232, 180, 74, .13); color: var(--gold2); margin-right: 6px; }

/* 文章正文 */
.article { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 34px; }
.article h1 { font-size: 28px; margin: 0 0 10px; line-height: 1.4; }
.article .meta { color: var(--dim); font-size: 13px; margin-bottom: 22px; }
.article .body { color: #d5dcec; font-size: 15.5px; white-space: pre-wrap; line-height: 1.95; }
/* 富文本正文：后台编辑器排的版在这里原样呈现；老新闻是纯文本，仍按换行分段（pre-wrap 兜住） */
.article .rich-body { white-space: normal; }
.article .rich-body p { margin: 0 0 1em; }
.article .rich-body h2,
.article .rich-body h3,
.article .rich-body h4 { margin: 1.4em 0 .7em; font-weight: 800; color: var(--gold); line-height: 1.4; }
.article .rich-body h2 { font-size: 22px; }
.article .rich-body h3 { font-size: 19px; }
.article .rich-body h4 { font-size: 16.5px; }
.article .rich-body ul,
.article .rich-body ol { margin: 0 0 1em; padding-left: 1.5em; }
.article .rich-body ul { list-style: disc; }
.article .rich-body ol { list-style: decimal; }
.article .rich-body li { margin: .3em 0; }
.article .rich-body a { color: var(--gold); text-decoration: underline; }
.article .rich-body blockquote { margin: 1.2em 0; padding-left: 1em; border-left: 3px solid var(--gold); color: var(--dim); }
.article .rich-body img { display: block; max-width: 100%; height: auto; margin: 1.2em 0; border-radius: 12px; }
.article .rich-body hr { margin: 1.8em 0; border: 0; border-top: 1px solid var(--line); }
.article .rich-body table { width: 100%; margin: 1.2em 0; border-collapse: collapse; }
.article .rich-body th,
.article .rich-body td { border: 1px solid var(--line); padding: .5em .7em; text-align: left; }
.article .rich-body th { background: rgba(255, 255, 255, .04); }
.acover { height: 300px; border-radius: 14px; background-size: cover; background-position: center; margin-bottom: 24px;
  background-color: #1b2438; }

/* 关于页 */
.about-grid { display: grid; grid-template-columns: 1.4fr .8fr; gap: 26px; align-items: start; }
.para { color: var(--sub); font-size: 15.5px; margin: 0 0 14px; line-height: 1.95; }
.kv { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 16px; }
.kv .box { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; text-align: center; }
.kv .box b { display: block; font-size: 24px; color: var(--gold); }
.kv .box span { font-size: 12.5px; color: var(--dim); }
.tl { position: relative; padding-left: 26px; }
.tl::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding-bottom: 22px; }
.tl-item::before { content: ""; position: absolute; left: -25px; top: 7px; width: 10px; height: 10px;
  border-radius: 50%; background: var(--gold); border: 2px solid var(--bg); }
.tl-item b { color: var(--gold2); font-size: 13px; letter-spacing: .5px; }
.tl-item h4 { margin: 4px 0 4px; font-size: 16px; }
.tl-item p { color: var(--sub); font-size: 14.5px; margin: 0; }

/* 联系表单 */
.form { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 26px; }
.field { margin-bottom: 15px; }
.field label { display: block; font-size: 13.5px; color: var(--sub); margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%; padding: 11px 13px; border-radius: 10px; font-size: 14.5px; font-family: inherit;
  background: rgba(255, 255, 255, .04); border: 1px solid var(--line); color: var(--txt);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--gold); }
.form .msg { margin-top: 12px; font-size: 14px; min-height: 20px; }
.form .msg.ok { color: var(--green); }
.form .msg.err { color: #ff7b7b; }
.contact-info { display: grid; gap: 14px; }
.ci { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.ci span { display: block; color: var(--dim); font-size: 12.5px; margin-bottom: 5px; }
.ci b { font-size: 15.5px; font-weight: 600; }

/* 页脚 */
.footer { border-top: 1px solid var(--line); padding: 40px 0 30px; background: var(--bg2); }
.footer-in { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: flex-start; }
.footer p { color: var(--dim); font-size: 13.5px; margin: 8px 0 0; }
.footer-links { display: flex; gap: 20px; font-size: 13.5px; color: var(--sub); flex-wrap: wrap; }
.footer-copy { border-top: 1px solid var(--line); margin-top: 26px; padding-top: 18px;
  color: var(--dim); font-size: 12.5px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

.empty { color: var(--dim); text-align: center; padding: 40px 0; font-size: 14.5px; }

/* ===================== 响应式（移动端自适应） ===================== */
@media (max-width: 980px) {
  .hero-in, .about-grid { grid-template-columns: 1fr; }
  .g3, .g4, .news { grid-template-columns: repeat(2, 1fr); }
  /* 算力面板不再隐藏：手机上改为堆叠展示，避免直接 display:none 丢内容 */
  .panel { display: block; margin-top: 6px; }
  .hero { padding: 64px 0 56px; }
  .sec { padding: 56px 0; }
}

@media (max-width: 820px) {
  /* 顶部导航：logo 占首行，导航链接自动换行居中，全部可见、无需汉堡菜单 */
  /* 汉堡按钮：仅移动端显示，固定在导航条右上、层级高于抽屉以便收起 */
  .nav-in { height: 56px; }
  .nav-burger {
    display: inline-flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 42px; height: 42px; margin-left: auto; padding: 0 9px;
    background: transparent; border: 1px solid var(--line); border-radius: 10px; cursor: pointer;
    position: relative; z-index: 70;
  }
  .nav-burger span { display: block; height: 2px; width: 100%; background: var(--txt); border-radius: 2px;
    transition: transform .25s, opacity .2s; }
  .nav.open .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.open .nav-burger span:nth-child(2) { opacity: 0; }
  .nav.open .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* 抽屉式导航：从右侧滑出 */
  .nav-links {
    position: fixed; top: 0; right: 0; z-index: 60;
    width: min(50vw, 132px); height: 100vh; height: 100dvh;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: var(--bg2); border-left: 1px solid var(--line);
    padding: 76px 12px 24px; margin-left: 0;
    transform: translateX(100%); transition: transform .28s ease;
    overflow-y: auto; box-shadow: -12px 0 40px rgba(0,0,0,.45);
  }
  .nav.open .nav-links { transform: translateX(0); }
  .nav-links a { padding: 13px 10px; font-size: 15px; border-bottom: 1px solid var(--line); }
  .nav-links a.on { border-bottom-color: var(--gold); }
  .nav-links .lang { margin: 12px 0 0; justify-content: center; }

  /* 遮罩：点击空白收起 */
  .nav-overlay {
    position: fixed; inset: 0; z-index: 55; background: rgba(0,0,0,.5);
    opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s;
  }
  .nav.open .nav-overlay { opacity: 1; visibility: visible; }
}

@media (max-width: 620px) {
  .g3, .g4, .news, .g2, .kv { grid-template-columns: 1fr; }
  .sec { padding: 46px 0; }
  .sec-head { margin-bottom: 26px; }
  .sec-head h2 { font-size: 22px; }
  .hero h1 { font-size: clamp(25px, 7.5vw, 36px); }
  .hero p { font-size: 15px; max-width: 100%; }
  .stats { max-width: 100%; }
  .stat { padding: 12px 8px; }
  .stat b { font-size: 19px; }
  .card { padding: 20px; }
  .article { padding: 22px; }
  .article h1 { font-size: 23px; }
  .article .body { font-size: 15px; line-height: 1.85; }
  .acover { height: 170px; }
  .panel { padding: 18px; }
  .form { padding: 22px; }
  /* 输入框 16px：避免 iOS Safari 聚焦时自动放大页面 */
  .field input, .field textarea { padding: 12px 13px; font-size: 16px; }
  .btns { gap: 10px; }
  .btns .btn { flex: 1 1 auto; text-align: center; }
  .footer-in { flex-direction: column; gap: 18px; }
  .footer-copy { flex-direction: column; gap: 6px; }
}

@media (max-width: 420px) {
  :root { --gutter: 16px; }
  .sec { padding: 40px 0; }
  .hero { padding: 52px 0 44px; }
  .article { padding: 18px; }
  .article h1 { font-size: 21px; }
  .acover { height: 150px; }
  .card { padding: 18px; }
  .ncover { height: 150px; }
  .panel { padding: 16px; }
  .form { padding: 18px; }
  .hero h1 { font-size: clamp(23px, 8vw, 30px); }
  .hero p { font-size: 14.5px; }
  .stat { padding: 10px 6px; }
  .stat b { font-size: 17px; }
  .sec-head h2 { font-size: 20px; }
}

/* 尊重系统的“减少动态效果”偏好 */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}