/* =========================================================
   箫歌山人 · 水墨仙气风格
   视觉指南 v1.1：仙气脱俗 / 美观清新 / 大气简约
   ========================================================= */

:root {
  --paper: #F7F4EC;        /* 宣纸白 */
  --paper-dark: #EFEAE0;   /* 纸底深一阶 */
  --ink: #2B2B2B;          /* 松烟墨 */
  --ink-soft: #5A5A52;     /* 淡墨 */
  --qing: #6FA8A8;         /* 天青 */
  --qing-deep: #4E8A8A;    /* 天青深 */
  --dai: #3E4A5E;          /* 黛蓝 */
  --moon: #E8EFF2;         /* 月白 */
  --zhu: #7A9A7E;          /* 竹青 */
  --line: rgba(43, 43, 43, 0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 版式 ---------- */
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 244, 236, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1080px; margin: 0 auto; padding: 14px 24px;
}
.brand {
  font-size: 1.5rem; letter-spacing: 0.3em; color: var(--ink);
  text-decoration: none; font-weight: 600;
}
.brand small { font-size: 0.7rem; color: var(--ink-soft); letter-spacing: 0.2em; margin-left: 8px; }
.brand .brand-logo { height: 1.7em; width: auto; vertical-align: -0.35em; margin-right: 8px; border-radius: 6px; }
.nav { display: flex; gap: 28px; }
.nav a {
  color: var(--ink-soft); text-decoration: none; font-size: 0.95rem;
  letter-spacing: 0.15em; transition: color 0.3s;
}
.nav a:hover { color: var(--qing-deep); }
.nav a.active { color: var(--qing-deep); }

/* ---------- 首屏水墨山景 ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 90px 24px 60px; text-align: center;
}
.hero.has-banner::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(247, 244, 236, 0.35);
  pointer-events: none;
}
.hero-title {
  font-size: clamp(2rem, 6vw, 3.4rem);
  letter-spacing: 0.4em; font-weight: 600; color: var(--ink);
  animation: fadeUp 1.2s ease both;
}
.hero-sub {
  margin-top: 18px; color: var(--ink-soft); letter-spacing: 0.3em;
  font-size: clamp(0.9rem, 2.5vw, 1.1rem);
  animation: fadeUp 1.2s 0.3s ease both;
}
.hero-mountain { margin-top: -10px; animation: fadeUp 1.4s 0.5s ease both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes drift {
  0% { transform: translateX(-12px); opacity: 0.55; }
  50% { transform: translateX(12px); opacity: 0.9; }
  100% { transform: translateX(-12px); opacity: 0.55; }
}
.cloud { animation: drift 9s ease-in-out infinite; }

/* ---------- 区块 ---------- */
.section { padding: 72px 0; }
.section-title {
  font-size: 1.5rem; letter-spacing: 0.35em; text-align: center;
  margin-bottom: 8px;
}
.section-sub { text-align: center; color: var(--ink-soft); font-size: 0.9rem; letter-spacing: 0.2em; margin-bottom: 44px; }
.divider {
  width: 56px; height: 1px; background: var(--qing); margin: 26px auto 8px;
}

/* ---------- 卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
.card {
  background: var(--paper-dark); border: 1px solid var(--line);
  border-radius: 6px; padding: 34px 26px;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 14px 34px rgba(43,43,43,0.08); }
.card-icon { font-size: 1.8rem; margin-bottom: 14px; }
.card h3 { font-size: 1.15rem; letter-spacing: 0.2em; margin-bottom: 10px; }
.card p { color: var(--ink-soft); font-size: 0.92rem; }
.card .more { display: inline-block; margin-top: 16px; color: var(--qing-deep); text-decoration: none; font-size: 0.88rem; letter-spacing: 0.1em; }

/* ---------- 洞天八阶 ---------- */
.levels { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.level {
  border: 1px solid var(--line); border-radius: 6px; padding: 20px 18px;
  background: rgba(255,255,255,0.4); text-align: center;
  transition: border-color 0.3s;
}
.level:hover { border-color: var(--qing); }
.level .lv { color: var(--qing-deep); font-size: 0.8rem; letter-spacing: 0.2em; }
.level .name { font-size: 1.1rem; margin: 6px 0; letter-spacing: 0.15em; }
.level .desc { color: var(--ink-soft); font-size: 0.82rem; }

/* ---------- 页脚 ---------- */
.footer {
  background: var(--dai); color: var(--moon); padding: 46px 24px 30px;
  margin-top: 40px;
}
.footer-inner { max-width: 1080px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 28px; justify-content: space-between; }
.footer .brand2 { font-size: 1.2rem; letter-spacing: 0.3em; color: #fff; }
.footer p, .footer a { color: rgba(232,239,242,0.75); font-size: 0.85rem; text-decoration: none; }
.footer a:hover { color: #fff; }
.copyright { text-align: center; margin-top: 30px; font-size: 0.8rem; color: rgba(232,239,242,0.55); letter-spacing: 0.1em; }

/* ---------- 通用组件 ---------- */
.btn {
  display: inline-block; padding: 10px 30px; border-radius: 4px;
  border: 1px solid var(--qing); color: var(--qing-deep);
  text-decoration: none; letter-spacing: 0.2em; font-size: 0.92rem;
  transition: all 0.3s; background: transparent;
}
.btn:hover { background: var(--qing); color: #fff; }
.btn-solid { background: var(--qing); color: #fff; }
.btn-solid:hover { background: var(--qing-deep); }

.tag {
  display: inline-block; padding: 2px 12px; border: 1px solid var(--line);
  border-radius: 20px; font-size: 0.78rem; color: var(--ink-soft); margin: 4px 4px 0 0;
}

/* ---------- 页内占位（子页面） ---------- */
.page-hero { padding: 80px 24px 40px; text-align: center; }
.page-hero h1 { font-size: 2.2rem; letter-spacing: 0.4em; }
.page-hero p { color: var(--ink-soft); margin-top: 12px; letter-spacing: 0.2em; }

.placeholder {
  border: 1px dashed var(--qing); border-radius: 6px; color: var(--ink-soft);
  padding: 60px 20px; text-align: center; font-size: 0.92rem; letter-spacing: 0.15em;
  background: rgba(255,255,255,0.3);
}

/* ---------- 用户区（顶部导航右侧） ---------- */
.userbox { display: flex; align-items: center; gap: 10px; }
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 20px;
  background: var(--dai); color: var(--moon); font-size: 0.72rem; letter-spacing: 0.1em;
}
.uname { color: var(--ink); font-size: 0.88rem; max-width: 90px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.merit { color: var(--qing-deep); font-size: 0.82rem; }
.logout { color: var(--ink-soft); font-size: 0.8rem; text-decoration: none; letter-spacing: 0.1em; }
.logout:hover { color: var(--zhu); }
.acc-link { color: var(--qing-deep); font-size: 0.85rem; text-decoration: none; }
.acc-link:hover { color: var(--ink); }
.btn-small { padding: 6px 18px; font-size: 0.82rem; }

/* ---------- 内容列表（真数据卡片） ---------- */
.item-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 22px; }
.item-card {
  background: var(--paper-dark); border: 1px solid var(--line); border-radius: 6px;
  padding: 24px 22px; cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.item-card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(43,43,43,0.08); }
.item-card.is-locked { opacity: 0.82; }
.item-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.item-type { color: var(--qing-deep); font-size: 0.82rem; letter-spacing: 0.15em; }
.item-tags { text-align: right; }
.item-title { font-size: 1.05rem; letter-spacing: 0.08em; margin-bottom: 8px; }
.item-desc {
  color: var(--ink-soft); font-size: 0.88rem; line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.item-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; }
.item-author { color: var(--ink-soft); font-size: 0.78rem; }
.item-card .more { color: var(--qing-deep); text-decoration: none; font-size: 0.85rem; letter-spacing: 0.1em; }
.item-empty { color: var(--ink-soft); font-size: 0.9rem; text-align: center; padding: 40px 0; grid-column: 1 / -1; }
.tag-free { border-color: rgba(122,154,126,0.5); color: var(--zhu); }
.tag-price { border-color: rgba(232,150,60,0.5); color: #B26A2B; }
.tag-lock { border-color: rgba(62,74,94,0.4); color: var(--dai); }

/* ---------- 详情浮层 ---------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 100; display: none;
  background: rgba(43,43,43,0.45); align-items: center; justify-content: center; padding: 20px;
}
.modal-mask.show { display: flex; }
.modal {
  position: relative; background: var(--paper); border-radius: 8px;
  max-width: 560px; width: 100%; max-height: 82vh; overflow-y: auto;
  padding: 34px 30px; box-shadow: 0 24px 60px rgba(43,43,43,0.25);
}
.modal-close {
  position: absolute; top: 12px; right: 14px; border: none; background: none;
  color: var(--ink-soft); font-size: 1.1rem; cursor: pointer;
}
.modal-close:hover { color: var(--ink); }
.modal-type { color: var(--qing-deep); font-size: 0.82rem; letter-spacing: 0.15em; margin-bottom: 10px; }
.modal h3 { font-size: 1.3rem; letter-spacing: 0.1em; margin-bottom: 12px; }
.modal-desc { color: var(--ink-soft); font-size: 0.92rem; line-height: 1.8; }
.modal-price { color: #B26A2B; font-size: 0.88rem; margin-top: 14px; }
.modal-tip { color: var(--ink-soft); font-size: 0.85rem; margin-top: 14px; }
.chapter-list { margin: 18px 0; border-top: 1px solid var(--line); }
.chapter-row { padding: 10px 4px; border-bottom: 1px solid var(--line); font-size: 0.9rem; color: var(--ink); }
.btn-block { display: block; width: 100%; text-align: center; margin-top: 18px; }

/* ---------- 入山门表单 ---------- */
.auth-card { max-width: 460px; margin: 40px auto 0; text-align: center; }
.auth-sub { font-size: 0.85rem; color: var(--ink-soft); margin: 6px 0 20px; }
.auth-tabs {
  display: flex; gap: 0; border-bottom: 1px solid var(--line); margin-bottom: 22px;
}
.auth-tab {
  flex: 1; padding: 10px 0; border: none; background: none; cursor: pointer;
  color: var(--ink-soft); font-size: 0.92rem; letter-spacing: 0.2em;
  border-bottom: 2px solid transparent; transition: all 0.3s;
}
.auth-tab:hover { color: var(--qing-deep); }
.auth-tab.active { color: var(--qing-deep); border-bottom-color: var(--qing); }
.auth-pane { display: none; }
.auth-pane.show { display: block; }
.form-row { margin-bottom: 14px; }
.form-inline { display: flex; gap: 10px; }
.form-inline .form-input { flex: 1; }
.form-input {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 4px;
  background: rgba(255,255,255,0.6); font-size: 0.95rem; color: var(--ink);
  font-family: inherit; outline: none; transition: border-color 0.3s;
}
.form-input:focus { border-color: var(--qing); }
.btn-ghost { background: transparent; }
.auth-msg { min-height: 22px; margin-top: 12px; font-size: 0.85rem; color: var(--zhu); }
.auth-msg.is-err { color: #B05353; }
.auth-tip { margin-top: 16px; font-size: 0.78rem; color: var(--ink-soft); line-height: 1.9; }

/* ---------- 内容详情页 ---------- */
.detail-head { margin-bottom: 26px; }
.detail-tags { margin-bottom: 14px; }
.detail-title { font-size: 1.8rem; letter-spacing: 0.08em; line-height: 1.5; }
.detail-author { color: var(--ink-soft); font-size: 0.88rem; margin-top: 10px; }
.detail-desc { color: var(--ink-soft); font-size: 0.95rem; line-height: 1.9; margin-top: 16px; }
.detail-back { margin-top: 40px; text-align: center; }
.detail-back a { color: var(--qing-deep); text-decoration: none; font-size: 0.88rem; letter-spacing: 0.15em; }

/* 闸门（锁定/付费） */
.gate-box {
  background: var(--paper-dark); border: 1px solid var(--line); border-radius: 8px;
  padding: 40px 34px; text-align: center; margin-top: 10px;
}
.gate-icon { font-size: 2.4rem; margin-bottom: 14px; }
.gate-box h3 { font-size: 1.2rem; letter-spacing: 0.15em; margin-bottom: 12px; }
.gate-preview { color: var(--ink-soft); font-size: 0.9rem; line-height: 1.8; }
.gate-price { font-size: 1.05rem; margin-top: 10px; }
.gate-tip { color: var(--ink-soft); font-size: 0.82rem; margin-top: 16px; line-height: 1.9; }
.merit-hint { align-self: center; color: var(--ink-soft); font-size: 0.85rem; }
.pay-panel { margin-top: 18px; padding: 16px; border: 1px dashed var(--qing); border-radius: 6px; font-size: 0.9rem; }
.pay-panel code { background: rgba(43,43,43,0.06); padding: 2px 6px; border-radius: 3px; }
.pay-panel p { margin: 6px 0; }
.pay-ok { color: var(--zhu); font-size: 0.92rem; margin-top: 14px; }

/* 阅读器 */
.reader-wrap { display: grid; grid-template-columns: 220px 1fr; gap: 24px; margin-top: 8px; }
.reader-side {
  border: 1px solid var(--line); border-radius: 6px; background: var(--paper-dark);
  max-height: 560px; overflow-y: auto; padding: 10px;
}
.chapter-item {
  padding: 10px 12px; border-radius: 4px; cursor: pointer;
  font-size: 0.88rem; color: var(--ink-soft); transition: all 0.25s;
  border-bottom: 1px solid var(--line);
}
.chapter-item:hover { background: rgba(111,168,168,0.12); color: var(--ink); }
.chapter-item.active { background: var(--qing); color: #fff; }
.reader-main {
  border: 1px solid var(--line); border-radius: 6px; background: rgba(255,255,255,0.5);
  padding: 30px 32px; min-height: 420px;
}
.reader-head { border-bottom: 1px solid var(--line); padding-bottom: 14px; margin-bottom: 22px; }
.reader-head h4 { font-size: 1.2rem; letter-spacing: 0.1em; }
.reader-date { color: var(--ink-soft); font-size: 0.78rem; margin-top: 6px; }
.reader-body { font-size: 1rem; line-height: 2.1; color: var(--ink); }
.reader-audio { border: 1px solid var(--line); border-radius: 6px; padding: 14px 16px; margin-bottom: 20px; background: var(--paper-dark); }

/* 播放器 */
.player-box {
  border: 1px solid var(--line); border-radius: 8px; background: var(--paper-dark);
  padding: 36px 30px; text-align: center; margin-top: 10px;
}
.player-icon { font-size: 2.6rem; margin-bottom: 12px; }
.player-box h4 { font-size: 1.15rem; letter-spacing: 0.12em; margin-bottom: 18px; }
#audioSlot audio { width: 100%; margin-top: 6px; }

/* 流水/订单/通知行 */
.log-row {
  display: flex; align-items: center; gap: 12px; padding: 10px 2px;
  border-bottom: 1px solid var(--line); font-size: 0.88rem;
}
.log-row:last-child { border-bottom: none; }
.log-src { flex: 1; color: var(--ink); }
.log-time { color: var(--ink-soft); font-size: 0.75rem; white-space: nowrap; }
.merit-plus { color: var(--zhu); font-weight: 600; min-width: 34px; }
.merit-minus { color: #B05353; font-weight: 600; min-width: 34px; }

/* 学习进度条 */
.study-bar { flex: 1; max-width: 140px; height: 6px; background: rgba(43,43,43,0.08); border-radius: 3px; overflow: hidden; }
.study-fill { height: 100%; background: var(--qing); border-radius: 3px; }

/* 论坛/答疑 */
.forum-toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.forum-tab {
  padding: 6px 18px; border: 1px solid var(--line); border-radius: 20px;
  color: var(--ink-soft); font-size: 0.85rem; cursor: pointer; letter-spacing: 0.1em;
  transition: all 0.25s;
}
.forum-tab:hover { border-color: var(--qing); color: var(--qing-deep); }
.forum-tab.active { background: var(--qing); border-color: var(--qing); color: #fff; }
.post-list { display: flex; flex-direction: column; gap: 14px; }
.post-card {
  background: var(--paper-dark); border: 1px solid var(--line); border-radius: 6px;
  padding: 18px 20px; cursor: pointer; transition: transform 0.25s, box-shadow 0.25s;
}
.post-card:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(43,43,43,0.07); }
.post-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.post-count { margin-left: auto; color: var(--ink-soft); font-size: 0.8rem; }
.post-title { font-size: 1.02rem; letter-spacing: 0.06em; margin-bottom: 6px; }
.post-body {
  color: var(--ink-soft); font-size: 0.88rem; line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.post-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 10px; }
.post-author { color: var(--ink-soft); font-size: 0.78rem; }
.reply-list { margin: 16px 0 8px; border-top: 1px solid var(--line); max-height: 300px; overflow-y: auto; }
.reply-row { padding: 12px 2px; border-bottom: 1px solid var(--line); }
.reply-row.is-accepted { background: rgba(122,154,126,0.08); border-left: 3px solid var(--zhu); padding-left: 10px; }
.reply-author { color: var(--qing-deep); font-size: 0.82rem; }
.reply-row p { font-size: 0.9rem; color: var(--ink); margin: 6px 0; line-height: 1.8; }
.accept-btn { border-color: var(--zhu); color: var(--zhu); }
.accept-btn:hover { background: var(--zhu); color: #fff; }

/* 公告样式 */
.notice-box {
  background: rgba(111,168,168,0.08); border: 1px solid rgba(111,168,168,0.35);
  border-radius: 8px; padding: 22px 26px;
}
.notice-head { font-size: 1.05rem; letter-spacing: 0.2em; color: var(--qing-deep); margin-bottom: 14px; }
.notice-item { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px dashed rgba(111,168,168,0.25); }
.notice-item:last-child { border-bottom: none; }
.notice-icon { font-size: 1.2rem; }
.notice-item b { font-size: 0.95rem; }
.notice-item p { color: var(--ink-soft); font-size: 0.88rem; }

/* 互动区（点赞/收藏/评论） */
.interact-box { margin-top: 30px; border-top: 1px solid var(--line); padding-top: 22px; }
.interact-bar { display: flex; gap: 10px; margin-bottom: 18px; }
.interact-bar .btn { padding: 6px 20px; font-size: 0.85rem; }
.comment-list { margin-bottom: 10px; }

/* 管理后台 */
.admin-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.admin-tab {
  padding: 8px 18px; border: 1px solid var(--line); border-radius: 20px;
  color: var(--ink-soft); font-size: 0.88rem; cursor: pointer; letter-spacing: 0.08em;
  transition: all 0.25s;
}
.admin-tab:hover { border-color: var(--qing); color: var(--qing-deep); }
.admin-tab.active { background: var(--dai); border-color: var(--dai); color: var(--moon); }
.admin-pane { display: none; }
.admin-pane.show { display: block; }
.admin-table-wrap { overflow-x: auto; background: var(--paper-dark); border: 1px solid var(--line); border-radius: 6px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.admin-table th {
  text-align: left; padding: 12px 14px; background: rgba(62,74,94,0.08);
  color: var(--ink-soft); font-weight: 600; letter-spacing: 0.05em; white-space: nowrap;
}
.admin-table td { padding: 10px 14px; border-top: 1px solid var(--line); vertical-align: middle; }
.admin-op { padding: 4px 8px; font-size: 0.8rem; border: 1px solid var(--line); border-radius: 4px; background: #fff; margin-right: 6px; max-width: 90px; }
.admin-op[data-act="ban"] { border-color: #B05353; color: #B05353; background: transparent; cursor: pointer; }

/* 合规页 */
.legal { font-size: 0.95rem; line-height: 2; color: var(--ink); }
.legal h3 { font-size: 1.05rem; letter-spacing: 0.12em; margin: 26px 0 8px; color: var(--qing-deep); }
.legal p { margin-bottom: 10px; color: var(--ink-soft); }
.legal .legal-date { font-size: 0.82rem; color: var(--ink-soft); border-bottom: 1px solid var(--line); padding-bottom: 14px; }
.legal-links { text-align: center; margin: 24px 0 8px; }
.legal-links a { color: var(--moon); opacity: 0.85; font-size: 0.82rem; text-decoration: none; }
.legal-links a:hover { opacity: 1; }

/* 搜索框 */
.search-box { display: flex; gap: 10px; margin: 0 auto 26px; max-width: 420px; }
.search-box .form-input { flex: 1; }

/* 举报按钮 */
.report-link { color: var(--ink-soft); font-size: 0.8rem; text-decoration: none; margin-left: 12px; }
.report-link:hover { color: #B05353; }

/* CSV 导入 */
.import-box textarea { font-family: Consolas, monospace; font-size: 0.82rem; }

@media (max-width: 760px) {
  .reader-wrap { grid-template-columns: 1fr; }
  .reader-side { max-height: 220px; }
  .reader-main { padding: 20px 18px; min-height: 300px; }
  .gate-box { padding: 28px 20px; }
  .detail-title { font-size: 1.4rem; }
}

/* ---------- 移动端 ---------- */
@media (max-width: 760px) {
  .topbar-inner { flex-direction: column; gap: 10px; padding: 12px 16px; }
  .nav { gap: 18px; }
  .nav a { font-size: 0.85rem; }
  .hero { padding: 60px 16px 40px; }
  .section { padding: 52px 0; }
  .cards { grid-template-columns: 1fr; }
  .levels { grid-template-columns: repeat(2, 1fr); }
  .userbox { justify-content: center; }
  .item-list { grid-template-columns: 1fr; }
  .modal { padding: 26px 20px; }
}