/* =========================================================
   landing.css — 落地页 / 内容页公共样式（顶栏对齐原站首页）
   ========================================================= */

.landing-nav {
  position: fixed; top: 0; left: 0; right: 0; height: 62px; z-index: 30;
  display: flex; align-items: center; gap: 20px; padding: 0 26px;
  background: #14191e; border-bottom: 1px solid #2a3138;
  color: #e9e4d8; box-shadow: 0 2px 14px rgba(0, 0, 0, .18);
}
.landing-nav .ln-brand {
  display: flex; align-items: center; gap: 9px; color: #f2ede1;
  font-size: 15px; font-weight: 700; text-decoration: none; white-space: nowrap;
}
.landing-nav .ln-logo {
  width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center;
  background: #5b8dff; color: #fff; font-weight: 800; font-size: 15px;
}
.landing-nav .ln-links { display: flex; align-items: center; gap: 4px; }
.landing-nav a.ln-item {
  color: #cbc5b8; text-decoration: none; font-size: 13.5px;
  padding: 8px 13px; border-radius: 8px; white-space: nowrap; transition: .15s;
}
.landing-nav a.ln-item:hover { color: #f2ede1; background: #20272e; }
.landing-nav a.ln-item.active { color: #5b8dff; }
.landing-nav .ln-sp { flex: 1; }
.landing-nav .ln-icon {
  width: 34px; height: 34px; border-radius: 9px; cursor: pointer;
  border: 1px solid #39424b; background: #1c232a; color: #cbc5b8; font-size: 14px;
  display: grid; place-items: center;
}
.landing-nav .ln-icon:hover { color: #5b8dff; border-color: #5b8dff; }
.landing-nav a.ln-cta {
  display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
  border: 1px solid #5b8dff; color: #5b8dff; text-decoration: none;
  padding: 9px 18px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
  transition: .15s;
}
.landing-nav a.ln-cta:hover { background: #5b8dff; color: #fff; }
/* 语言切换下拉（文A 图标） */
.ln-lang { position: relative; display: inline-block; }
.ln-lang-menu {
  position: absolute; right: 0; top: calc(100% + 8px); display: none; min-width: 132px;
  background: #1c232a; border: 1px solid #39424b; border-radius: 10px; padding: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,.4); z-index: 600;
}
.ln-lang.open .ln-lang-menu { display: block; }
.ln-lang-menu button {
  display: block; width: 100%; text-align: left; padding: 8px 12px; border: none;
  background: transparent; color: #cbc5b8; font-size: 13px; border-radius: 7px; cursor: pointer;
}
.ln-lang-menu button:hover { background: #20272e; color: #f2ede1; }
.ln-lang-menu button.on { color: #5b8dff; font-weight: 650; }

@media (max-width: 900px) {
  .landing-nav { gap: 10px; padding: 0 12px; height: auto; min-height: 58px; flex-wrap: wrap; padding-bottom: 8px; }
  .landing-nav .ln-links { order: 3; width: 100%; overflow-x: auto; gap: 0; }
  .landing-nav a.ln-item { padding: 7px 9px; font-size: 12.5px; }
  .landing-nav .ln-sp { display: none; }
}

/* ---------- 内容页通用 ---------- */
.landing-page { max-width: 1060px; margin: 0 auto; padding: 108px 24px 56px; min-height: 62vh; }
.landing-page .lp-head { margin-bottom: 26px; }
.landing-page .lp-kicker {
  display: inline-block; color: var(--accent); font-size: 12.5px; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase; margin-bottom: 8px;
}
.landing-page h1 { font-size: 30px; margin: 0 0 8px; letter-spacing: -.02em; }
.landing-page .lp-sub { color: var(--muted); font-size: 14px; line-height: 1.75; margin: 0; }
.landing-page h2 { font-size: 19px; margin: 30px 0 12px; }
.landing-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.lp-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 20px 22px; box-shadow: var(--shadow);
}
.lp-card h3 { margin: 0 0 10px; font-size: 16px; display: flex; align-items: center; gap: 9px; }
.lp-card h3 i { color: var(--accent); }
.lp-card ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 13.2px; line-height: 1.9; }
.lp-card p { color: var(--muted); font-size: 13.2px; line-height: 1.8; margin: 0; }
.lp-note {
  border-left: 3px solid var(--accent); background: var(--soft);
  padding: 12px 16px; border-radius: 0 10px 10px 0; font-size: 13px;
  color: var(--muted); margin: 18px 0; line-height: 1.75;
}
.lp-steps { display: grid; gap: 12px; }
.lp-step {
  display: flex; gap: 16px; align-items: flex-start; background: var(--panel);
  border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px;
}
.lp-step .num {
  flex: 0 0 30px; height: 30px; border-radius: 9px; display: grid; place-items: center;
  background: var(--accent); color: var(--bg); font-weight: 800; font-size: 14px;
}
.lp-step b { display: block; font-size: 14.5px; margin-bottom: 4px; }
.lp-step span { color: var(--muted); font-size: 13px; line-height: 1.75; }
.lp-code {
  display: block; background: #14191e; color: #d9e2cf; border-radius: 10px;
  padding: 14px 16px; font-family: Consolas, Monaco, monospace; font-size: 12.5px;
  white-space: pre-wrap; line-height: 1.7; overflow-x: auto; margin: 10px 0;
}
.lp-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.lp-table th, .lp-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; }
.lp-table th { color: var(--muted); font-weight: 600; font-size: 12.5px; }
.lp-table td code { font-family: Consolas, Monaco, monospace; color: var(--accent); }
.lp-tools { display: flex; gap: 10px; flex-wrap: wrap; margin: 14px 0; }
.lp-input, .lp-select {
  background: var(--panel); border: 1px solid var(--line); color: var(--text);
  border-radius: 9px; padding: 9px 12px; font-size: 13.5px; outline: none;
}
.lp-input:focus, .lp-select:focus { border-color: var(--accent); }
.lp-btn {
  background: var(--accent); color: var(--bg); border: none; border-radius: 9px;
  padding: 9px 18px; font-size: 13.5px; font-weight: 700; cursor: pointer;
}
.lp-btn:hover { filter: brightness(1.08); }
.lp-btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.lp-msg { margin-top: 12px; font-size: 13.5px; min-height: 20px; }
.lp-msg.ok { color: var(--ok); }
.lp-msg.bad { color: #d97066; }
.lp-stat { display: flex; gap: 14px; flex-wrap: wrap; margin: 16px 0; }
.lp-stat .st {
  flex: 1 1 160px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 16px 18px;
}
.lp-stat .st span { display: block; color: var(--muted); font-size: 12.5px; margin-bottom: 6px; }
.lp-stat .st b { font-size: 22px; }
.lp-stat .st b.warn { color: #d97066; }
.lp-map {
  width: 100%; border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
  background: #10161a; display: block;
}
.landing-footer {
  border-top: 1px solid var(--line);
  color: var(--muted); font-size: 12.5px; background: var(--panel);
  padding: 0 24px;
}
.landing-footer .ft-in {
  max-width: 1000px; margin: 0 auto; padding: 20px 0 22px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.landing-footer .ft-r a { color: inherit; opacity: .75; text-decoration: none; margin-left: 18px; }
.landing-footer .ft-r a:hover { opacity: 1; color: var(--accent); }
@media (max-width: 720px) {
  .landing-footer .ft-in { flex-direction: column; text-align: center; }
  .landing-footer .ft-r a { margin: 0 9px; }
}
@media (max-width: 820px) {
  .landing-page { padding-top: 132px; }
  .landing-grid { grid-template-columns: 1fr; }
}

/* ---------- 首页数据条（结构对齐原站，颜色随站内主题） ---------- */
.stats-band {
  background: var(--panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: 30px 0 26px;
  padding: 24px 20px 22px;
}
.stats-band-in {
  max-width: 1000px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
/* 数据条下方的标题专栏（大字居中 + 主题色短横线） */
.sec-head { text-align: center; margin: 58px 0 42px; }
.stats-title {
  text-align: center; font-size: 34px; font-weight: 800; letter-spacing: 1px;
  color: var(--text); margin: 0 0 16px;
}
.stats-title-bar {
  display: block; width: 44px; height: 4px; border-radius: 2px;
  background: var(--accent); margin: 0 auto;
}
.stats-band .st { text-align: center; padding: 4px 16px; position: relative; }
.stats-band .st + .st::before {
  content: ''; position: absolute; left: 0; top: 12%; height: 76%; width: 1px;
  background: var(--line);
}
.stats-band .st b { font-size: 26px; font-weight: 800; color: var(--accent); letter-spacing: 1px; line-height: 1.15; }
.stats-band .st span { display: block; margin-top: 6px; font-size: 13px; color: var(--muted); letter-spacing: .5px; }
@media (max-width: 720px) {
  .stats-band { padding: 34px 12px 30px; margin: 28px 0 26px; }
  .sec-head { margin: 2px 0 22px; }
  .stats-title { font-size: 23px; margin-bottom: 12px; }
  .stats-band .st b { font-size: 26px; }
  .stats-band .st span { font-size: 13px; }
  .stats-band .st + .st::before { display: none; }
}

/* ---------- 首页 hero（index.php 与静态 SPA 壳共用） ---------- */
.landing .hero { padding-top: 118px; }
.landing .hero .en { color: var(--accent); }
.landing .hero .kicker {
  display: inline-flex; align-items: center; gap: 7px; border: 1px solid var(--line);
  background: var(--panel); border-radius: 999px; padding: 5px 14px; font-size: 12.5px;
  color: var(--muted); margin-bottom: 22px; box-shadow: var(--shadow);
}
.landing .feat { min-width: 190px; }
.landing .feat .ic { color: var(--accent); font-size: 16px; margin-bottom: 6px; display: block; }
.landing .grid-2 {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px;
  max-width: 1000px; margin: 0 auto; padding: 0 24px 70px; text-align: left;
}
.landing .grid-2 .card { margin: 0; }
.landing .grid-2 .card h3 { display: flex; align-items: center; gap: 8px; }
.landing .grid-2 ul { margin: 10px 0 0; padding-left: 18px; color: var(--muted); font-size: 13px; }
.landing .grid-2 li { margin: 4px 0; }
@media (max-width: 820px) { .landing .grid-2 { grid-template-columns: 1fr; } }

/* ---------- QQ 机器人栏目（对齐原站 #qqbot） ---------- */
.qb-shell { max-width: 1060px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.qb-stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px;
}
.qb-stat { margin: 0; padding: 20px 22px; }
.qb-stat b { display: block; font-size: 34px; line-height: 1.1; color: var(--accent); }
.qb-stat span { display: block; font-size: 14.5px; font-weight: 700; margin-top: 8px; }
.qb-stat small { display: block; color: var(--muted); font-size: 12.5px; margin-top: 3px; }
.qb-conn { margin: 0; display: flex; align-items: center; gap: 16px; padding: 20px 22px; }
.qb-badge {
  width: 52px; height: 52px; border-radius: 14px; flex: 0 0 auto;
  display: grid; place-items: center; font-size: 26px;
  background: rgba(91, 141, 255, .16); color: var(--accent);
}
.qb-conn-main b { display: block; font-size: 15px; }
.qb-conn-line { display: flex; align-items: center; gap: 8px; margin-top: 5px; color: var(--muted); font-size: 13.5px; }
.qb-dot {
  width: 9px; height: 9px; border-radius: 50%; flex: 0 0 auto;
  background: #98a2ad; display: inline-block;
}
.qb-dot.on { background: #3fae6a; box-shadow: 0 0 0 3px rgba(63, 174, 106, .18); }
.qb-add { margin: 0; display: flex; gap: 26px; padding: 24px; align-items: flex-start; flex-wrap: wrap; }
.qb-qr {
  width: 220px; height: 220px; flex: 0 0 auto; border-radius: 12px;
  border: 1px solid var(--line); background: #fff; overflow: hidden;
  display: grid; place-items: center;
}
.qb-qr img { width: 100%; height: 100%; display: block; }
.qb-qr-empty { text-align: center; color: #8b94a0; font-size: 12.5px; }
.qb-qr-empty i { display: block; font-size: 42px; margin-bottom: 8px; color: #c3c9d1; }
.qb-add-main { flex: 1 1 320px; min-width: 260px; }
.qb-add-main h3 { display: flex; align-items: center; gap: 8px; font-size: 17px; }
.qb-add-main p { color: var(--text); font-size: 13.5px; margin: 10px 0 0; }
.qb-hint { color: var(--muted) !important; font-size: 12.5px !important; }
.qb-add-main .lp-tools { margin-top: 16px; }
.qb-groups { margin: 0; padding: 20px 22px; }
.qb-groups h3 { display: flex; align-items: center; gap: 8px; }
.qb-groups .qb-hint { margin: 6px 0 14px; }
.qb-list { display: flex; flex-direction: column; gap: 10px; }
.qb-row {
  display: flex; align-items: center; gap: 12px;
  border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
  background: var(--panel);
}
.qb-row.expired { opacity: .68; }
.qb-row-ic {
  width: 38px; height: 38px; border-radius: 10px; flex: 0 0 auto;
  display: grid; place-items: center; font-size: 18px;
  background: rgba(91, 141, 255, .14); color: var(--accent);
}
.qb-row-main { flex: 1; min-width: 0; }
.qb-row-main b { display: block; font-size: 14px; }
.qb-row-main span { display: block; color: var(--muted); font-size: 12.5px; margin-top: 2px; }
.qb-tag {
  font-style: normal; font-size: 12px; padding: 3px 10px; border-radius: 999px; white-space: nowrap;
}
.qb-tag.ok { background: rgba(63, 174, 106, .14); color: #2f8f56; }
.qb-tag.off { background: rgba(220, 80, 80, .12); color: #c05050; }
.qb-tag.ai { background: rgba(99, 102, 241, .14); color: #6366f1; }
.qb-empty { text-align: center; padding: 34px 10px; color: var(--muted); }
.qb-empty b { display: block; font-size: 14.5px; color: var(--text); margin-bottom: 5px; }
@media (max-width: 820px) {
  .qb-stats { grid-template-columns: 1fr; }
  .qb-add { flex-direction: column; }
}

/* ---------- 账号续费（对齐原站三步式） ---------- */
.rn-steps { display: flex; align-items: center; justify-content: center; gap: 10px; margin: 6px 0 22px; }
.rn-step { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.rn-step .no {
  width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  border: 1.5px solid var(--line); color: var(--muted); font-size: 13px; font-weight: 700;
  background: var(--soft); transition: all .2s;
}
.rn-step .t { font-size: 12px; color: var(--muted); }
.rn-step.on .no { border-color: var(--accent); background: var(--accent); color: var(--bg); }
.rn-step.on .t { color: var(--accent); font-weight: 600; }
.rn-line { width: 56px; height: 1.5px; background: var(--line); margin-bottom: 20px; }
.rn-f .l { display: block; font-size: 12.5px; color: var(--muted); font-weight: 600; margin-bottom: 6px; }
.rn-ic {
  display: flex; align-items: center; gap: 9px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--bg);
}
.rn-ic:focus-within { border-color: var(--accent); }
.rn-ic i { color: var(--muted); font-size: 13px; width: 16px; text-align: center; }
.rn-ic input { flex: 1; border: none !important; background: transparent; box-shadow: none !important; padding: 11px 0; }
.rn-main { width: 100%; justify-content: center; margin-top: 16px; font-size: 14.5px; padding: 12px; }

/* ---------- 门户首页自定义背景（平台管理员设置） ---------- */
/* ---------- 全屏固定背景（后台「网站设置」上传的背景图铺满整页） ---------- */
/* 注意：theme.css 给 html 和 body 都设了不透明背景色，body 的背景绘制在
   负 z-index 层之上；因此 .landing 提升为 z-index:1 的层叠上下文（见 app.css），
   本层在其内部用 z-index:-1 垫底 —— 低于文字内容、高于 body 背景与画布 */
.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-size: cover;
  background-position: center;
  pointer-events: none;
}
.page-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0.42) 45%, rgba(255, 255, 255, 0.5) 100%);
}
[data-theme="dark"] .page-bg::after { background: linear-gradient(180deg, rgba(10, 12, 16, 0.58) 0%, rgba(10, 12, 16, 0.48) 45%, rgba(10, 12, 16, 0.58) 100%); }
/* hero 自带的纯色底让位给全屏背景图 */
.landing .hero.has-bg { background: none; }

/* ---------- 部署教程（对齐原站 tutorials：章节编号 / 步骤要点 / 视频卡片） ---------- */
.lp-hno { color: var(--accent); font-size: 13px; letter-spacing: .08em; margin-right: 10px; }
.lp-step ul { margin: 8px 0 0; padding-left: 18px; color: var(--muted); font-size: 13px; line-height: 1.85; }
.lp-videos { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.lp-video { display: flex; flex-direction: column; gap: 6px; }
.lp-video-thumb {
  height: 120px; border-radius: 10px; background: var(--soft); margin-bottom: 6px;
  display: grid; place-items: center; font-size: 42px; color: var(--accent);
}
.lp-video-no { font-size: 11.5px; letter-spacing: .12em; color: var(--muted); text-transform: uppercase; }
.lp-video h3 { margin: 0; font-size: 15.5px; }
.lp-video p { margin: 0; font-size: 13px; }
.lp-video-soon { margin-top: auto; padding-top: 8px; font-size: 12px; color: var(--muted); }
@media (max-width: 820px) { .lp-videos { grid-template-columns: 1fr; } }