/* =========================================================
   layout.css  (GLOBAL BASE)
   - 全站统一基础样式（Header / Footer / Main / Form / Buttons）
   - 全站容器宽度唯一入口：--maxw: 1280px
   ========================================================= */

:root{
  --bg:#f4f6f9;
  --card:#ffffff;
  --text:#222;
  --muted:#666;

  --header:#2f2f2f;
  --footer:#2f2f2f;

  --accent:#1677ff;
  --danger:#ff4d4f;

  --radius:10px;
  --shadow:0 6px 18px rgba(0,0,0,.10);

  /* ✅ 全站宽度统一在这里改 */
  --maxw:1280px;
}

*{box-sizing:border-box}
html,body{height:100%}

/* ✅ 防止移动端横向撑爆（全站兜底） */
html, body{
  max-width:100%;
  overflow-x:hidden;
}

body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--bg);
}

/* ✅ 媒体元素兜底防溢出 */
img, video, iframe{
  max-width:100%;
  height:auto;
}
pre, code{
  max-width:100%;
  overflow:auto;
}
.table{
  max-width:100%;
}
.table-wrap,
.table-scroll{
  max-width:100%;
  overflow:auto;
}

/* =========================================================
   ✅ 统一容器宽度：Header / Main / Footer / Ad / App / 2FA
   ========================================================= */
.header-inner,
.main-wrap,
.ad-wrap,
.footer-inner,
.app-hero-inner,
.app-wrap,
.app-detail,
.main-container{
  max-width:var(--maxw);
  margin-left:auto;
  margin-right:auto;
}

/* ===== Header ===== */
.site-header{
  background:var(--header);
  color:#fff;
  position:sticky;
  top:0;
  z-index:50;
}

/* 桌面默认：flex */
.header-inner{
  padding:14px 18px;
  display:flex;
  align-items:center;
  gap:18px;
  min-width:0;
}

.brand{
  font-size:28px;
  font-weight:900;
  letter-spacing:2px;
  line-height:1;
  min-width:0;
}
.brand a{
  color:#fff;
  text-decoration:none;
  display:inline-block;
  max-width:100%;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.nav{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  min-width:0;
}
.nav a{
  color:#e9e9e9;
  text-decoration:none;
  font-size:14px;
  padding:6px 8px;
  border-radius:6px;
  white-space:nowrap;
}
.nav a:hover{background:rgba(255,255,255,.10);color:#fff}
.nav-right{margin-left:auto;display:flex;gap:12px;align-items:center}
.inline{display:inline-flex;gap:8px;align-items:center}

.navbtn{
  all:unset;
  cursor:pointer;
  color:#e9e9e9;
  font-size:14px;
  font-weight:600;
  padding:6px 8px;
  border-radius:6px;
  white-space:nowrap;
}
.navbtn:hover{background:rgba(255,255,255,.10);color:#fff}

/* ✅ 汉堡按钮：默认 PC 端隐藏 */
.nav-toggle{
  display:none;
  width:44px;
  height:40px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  cursor:pointer;
  padding:0;
}

/* ✅ 右上角自适应宽度下拉菜单（遮罩层：用于点击空白关闭） */
.mobile-menu{
  position:fixed;
  inset:0;
  background:transparent; /* 需要轻遮罩可改成 rgba(0,0,0,.18) */
  z-index:60;
  padding:0;
}

/* ✅ 下拉面板：宽度按内容（最长文字）决定 */
.mobile-menu-inner{
  position:absolute;
  top:64px;
  right:12px;
  width:max-content;
  max-width:calc(100vw - 24px);
  background:#fff;
  border-radius:14px;
  box-shadow:0 18px 60px rgba(0,0,0,.25);
  overflow:hidden;
  border:1px solid rgba(0,0,0,.10);
  padding:6px 0;
}

.mobile-menu-inner a{
  display:block;
  padding:10px 14px;
  color:#222;
  text-decoration:none;
  font-weight:700;
  border-bottom:1px solid rgba(0,0,0,.06);
  white-space:nowrap;
}
.mobile-menu-inner a:last-child{border-bottom:0}
.mobile-menu-inner a:hover{background:rgba(0,0,0,.04)}

.mobile-menu-sep{
  height:10px;
  background:rgba(0,0,0,.03);
  border-top:1px solid rgba(0,0,0,.06);
  border-bottom:1px solid rgba(0,0,0,.06);
}

.mobile-menu-form{
  margin:0;
  padding:10px 14px;
  border-bottom:1px solid rgba(0,0,0,.06);
}
.mobile-menu-btn{
  width:100%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid rgba(0,0,0,.12);
  background:#fff;
  color:#222;
  font-weight:800;
  cursor:pointer;
  white-space:nowrap;
}
.mobile-menu-btn:hover{filter:brightness(.98)}

/* 打开菜单时锁滚动 */
.menu-open body{ overflow:hidden; }

/* ===== Main ===== */
.main-wrap{
  margin:22px auto;
  padding:0 18px;
}
.card{
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  border:1px solid rgba(0,0,0,.06);
}
.main-card{padding:18px}

/* ===== Optional Ad ===== */
.ad-wrap{
  margin:0 auto 1px;
  padding:0 18px;
}
.ad-card{
  background:#111;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.ad-card img{width:100%;display:block}

/* ===== Footer ===== */
.site-footer{
  background:var(--footer);
  color:#d8d8d8;
  /*margin-top:24px;*/
}
.footer-inner{ padding:26px 18px; }
.footer-grid{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:18px;
}
.footer-col h4{
  margin:0 0 10px;
  font-size:14px;
  color:#fff;
}
.footer-col a{
  display:block;
  color:#cfcfcf;
  text-decoration:none;
  margin:6px 0;
  font-size:13px;
}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:18px;
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  font-size:13px;
  color:#bdbdbd;
}
.footer-bottom .spacer{margin-left:auto}
.social a{
  display:inline-flex;
  width:30px;height:30px;
  border-radius:50%;
  background:rgba(255,255,255,.12);
  align-items:center;justify-content:center;
  color:#fff;text-decoration:none;
  margin-left:8px;
}
.social a:hover{background:rgba(255,255,255,.20)}

/* ===== Forms / Inputs ===== */
.form{display:grid;gap:10px;max-width:900px}
label{color:var(--muted);font-size:13px}
input,select,textarea{
  padding:10px 12px;
  border-radius:10px;
  border:1px solid rgba(0,0,0,.12);
  background:#fff;
  color:var(--text);
  outline:none;
  max-width:100%;
}
textarea.ta{min-height:120px;width:100%}

/* ===== Buttons (统一) ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 14px;
  border-radius:10px;
  border:1px solid rgba(0,0,0,.12);
  background:#fff;
  color:var(--text);
  text-decoration:none;
  font-weight:700;
  cursor:pointer;
}
.btn:hover{filter:brightness(.98)}
.btn-primary{
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
}
.btn-secondary{
  background:rgba(0,0,0,.06);
  border-color:rgba(0,0,0,.08);
  color:var(--text);
}
.btn-danger{
  background:var(--danger);
  border-color:var(--danger);
  color:#fff;
}
.btn-small{padding:8px 10px;border-radius:8px}

/* ===== Alerts ===== */
.alert{padding:10px 12px;border-radius:10px;margin:10px 0}
.alert-error{background:rgba(255,77,79,.10);border:1px solid rgba(255,77,79,.25)}
.alert-success{background:rgba(22,119,255,.08);border:1px solid rgba(22,119,255,.18)}

/* ===== Common Layout Utilities ===== */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:14px}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}
.table{width:100%;border-collapse:collapse;margin-top:12px}
.table th,.table td{padding:10px;border-bottom:1px solid rgba(0,0,0,.08);text-align:left;vertical-align:top}
.muted{color:var(--muted)}
.prose{line-height:1.7}
.mt{margin-top:14px}

/* ===== Responsive ===== */
@media (max-width:860px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .brand{font-size:22px}

  /* ✅ Header：移动端改为三列 grid（中间站名居中，右侧汉堡） */
  .header-inner{
    display:grid;
    grid-template-columns:1fr auto 1fr;
    align-items:center;
    gap:10px;
  }
  .hdr-left{display:block;} /* 占位 */
  .brand{justify-self:center;}

  /* ✅ 仅移动端显示汉堡按钮 + 三横 */
  .nav-toggle{
    display:flex;
    justify-self:end;
    flex-direction:column;
    gap:4px;
    align-items:center;
    justify-content:center;
  }
  .nav-toggle span{
    display:block;
    width:20px;
    height:2px;
    background:#fff;
    border-radius:2px;
    margin:0;
  }

  /* ✅ 移动端隐藏桌面 nav */
  .nav-desktop{display:none !important;}

  /* 你自定义：移动端内容边距更紧 */
  .main-wrap{
    margin:5px auto;
    padding:0 5px;
  }
  .ad-wrap{
    padding:0 5px;
  }
}