/* ============================================================
   小生壁纸 · 古风风格样式
   配色：宣纸米白 / 墨黑 / 朱砂红 / 黛青 / 鎏金
   ============================================================ */
:root {
  --paper: #f6f0e2;
  --paper-deep: #efe6d2;
  --ink: #2b2722;
  --ink-soft: #4a443b;
  --ink-light: #8a8172;
  --cinnabar: #a63b2e;
  --cinnabar-deep: #8f3025;
  --teal: #3d5a4c;
  --gold: #b08d57;
  --line: rgba(43, 39, 34, 0.14);
  --shadow: 0 10px 30px rgba(43, 39, 34, 0.12);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Serif SC", "Songti SC", "SimSun", serif;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse at 18% 8%, rgba(176, 141, 87, 0.10), transparent 45%),
    radial-gradient(ellipse at 85% 28%, rgba(61, 90, 76, 0.08), transparent 42%);
  background-attachment: fixed;
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* ---------- 顶部导航 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(246, 240, 226, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner { display: flex; align-items: center; gap: 24px; height: 64px; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-seal {
  width: 38px; height: 38px; line-height: 38px; text-align: center;
  background: var(--cinnabar); color: var(--paper);
  font-size: 22px; border-radius: 6px;
  font-family: "Ma Shan Zheng", "Noto Serif SC", serif;
  box-shadow: inset 0 0 0 2px rgba(246,240,226,.55);
}
.brand-text {
  font-family: "Ma Shan Zheng", "Noto Serif SC", serif;
  font-size: 24px; letter-spacing: 2px;
}

.main-nav { display: flex; gap: 6px; margin-left: 8px; }
.main-nav a {
  padding: 6px 12px; border-radius: 4px;
  color: var(--ink-soft); font-size: 15px; letter-spacing: 2px;
  transition: color .2s, background .2s;
}
.main-nav a:hover { color: var(--cinnabar); background: rgba(166,59,46,.06); }
.main-nav a.active { color: var(--cinnabar); }

.user-area { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.member { display: flex; align-items: center; gap: 10px; }
.member-name { font-weight: 700; color: var(--ink); letter-spacing: 1px; }
.member-quota {
  font-size: 13px; color: var(--teal);
  background: rgba(61,90,76,.08);
  padding: 3px 10px; border-radius: 20px;
  border: 1px solid rgba(61,90,76,.2);
}

/* ---------- 按钮 ---------- */
.btn {
  font-family: inherit; font-size: 15px; letter-spacing: 2px;
  padding: 7px 18px; border-radius: 4px; cursor: pointer;
  border: 1px solid transparent;
  transition: all .2s;
}
.btn-ghost {
  background: transparent; color: var(--ink-soft);
  border-color: rgba(43,39,34,.3);
}
.btn-ghost:hover { color: var(--cinnabar); border-color: var(--cinnabar); }
.btn-solid {
  background: var(--cinnabar); color: #fff;
}
.btn-solid:hover { background: var(--cinnabar-deep); }
.btn-block { width: 100%; padding: 11px; font-size: 16px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 主视觉 ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 84px 0 90px;
  text-align: center;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 55% at 50% 30%, rgba(246,240,226,0), rgba(239,230,210,0.85));
  pointer-events: none;
}
.hero-deco { position: absolute; pointer-events: none; opacity: .18; }
.hero-deco-1 {
  left: 4%; top: 18%; width: 220px; height: 150px;
  background: radial-gradient(ellipse at 30% 40%, transparent 55%, var(--ink) 56% 57%, transparent 58%),
    radial-gradient(ellipse at 70% 30%, transparent 62%, var(--ink) 63% 64%, transparent 65%);
  filter: blur(1px);
}
.hero-deco-2 {
  right: 6%; bottom: 12%; width: 180px; height: 120px;
  border-top: 3px solid var(--gold);
  border-radius: 50%;
  transform: rotate(-12deg);
  opacity: .28;
}
.hero-inner { position: relative; }
.hero-eyebrow { letter-spacing: 6px; color: var(--gold); font-size: 14px; margin-bottom: 16px; }
.hero-title {
  font-family: "Ma Shan Zheng", "Noto Serif SC", serif;
  font-size: clamp(52px, 9vw, 88px);
  line-height: 1.1;
  letter-spacing: 10px;
  color: var(--ink);
}
.hero-sub { margin-top: 14px; font-size: clamp(16px, 2.6vw, 20px); letter-spacing: 5px; color: var(--ink-soft); }
.hero-rule {
  width: 120px; height: 1px; margin: 24px auto;
  background: linear-gradient(90deg, transparent, var(--cinnabar), transparent);
  position: relative;
}
.hero-rule::before {
  content: ""; position: absolute; left: 50%; top: -3px; width: 7px; height: 7px;
  transform: translateX(-50%) rotate(45deg); background: var(--cinnabar);
}
.hero-note { font-size: 14px; letter-spacing: 3px; color: var(--ink-light); }

/* ---------- 内容区 ---------- */
.content { padding-bottom: 30px; }

.device-tabs { display: flex; justify-content: center; gap: 12px; margin: 10px 0 22px; }
.tab {
  font-family: inherit; font-size: 17px; letter-spacing: 4px;
  padding: 10px 34px; border-radius: 6px; cursor: pointer;
  background: transparent; color: var(--ink-soft);
  border: 1px solid rgba(43,39,34,.22);
  transition: all .2s;
}
.tab:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.tab.active {
  background: var(--ink); color: var(--paper); border-color: var(--ink);
}

/* ---------- 动态 / 静态切换 ---------- */
.mode-tabs {
  display: flex; justify-content: center; gap: 8px;
  margin: -6px 0 24px;
}
.mode-tab {
  font-family: inherit; font-size: 13px; letter-spacing: 3px;
  padding: 5px 20px; border-radius: 30px; cursor: pointer;
  background: transparent; color: var(--ink-light);
  border: 1px solid rgba(43,39,34,.2);
  transition: all .2s;
}
.mode-tab:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.mode-tab.active {
  background: var(--cinnabar); color: #fff; border-color: var(--cinnabar);
}

.cat-filter { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 28px; }
.chip {
  font-family: inherit; font-size: 14px; letter-spacing: 2px;
  padding: 6px 18px; border-radius: 30px; cursor: pointer;
  background: transparent; color: var(--ink-soft);
  border: 1px solid rgba(43,39,34,.25);
  transition: all .2s;
}
.chip:hover { border-color: var(--teal); color: var(--teal); }
.chip.active {
  background: var(--teal); color: #fff; border-color: var(--teal);
}

/* ---------- 壁纸网格 ---------- */
.wall-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}
.wall-card {
  position: relative;
  background: var(--paper-deep);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  transition: transform .25s, box-shadow .25s;
}
.wall-card:hover { transform: translateY(-5px); box-shadow: 0 16px 34px rgba(43,39,34,.18); }

.wall-cover { position: relative; width: 100%; overflow: hidden; background: #e7dcc4; }
.wall-cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s; }
.wall-card:hover .wall-cover img { transform: scale(1.05); }

/* 动态壁纸：慢速推拉（Ken Burns）动效预览 */
.wall-cover.is-dynamic img {
  animation: kenburns 18s ease-in-out infinite alternate;
  will-change: transform;
}
@keyframes kenburns {
  0%   { transform: scale(1.00) translate(0, 0); }
  50%  { transform: scale(1.14) translate(-1.5%, 1.5%); }
  100% { transform: scale(1.00) translate(0, 0); }
}

/* 动态徽标 */
.wall-badge {
  position: absolute; top: 10px; left: 10px; z-index: 2;
  padding: 2px 10px; font-size: 12px; letter-spacing: 2px;
  color: #fff; background: var(--cinnabar);
  border-radius: 3px;
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
  animation: badgePulse 2.4s ease-in-out infinite;
}
@keyframes badgePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .55; }
}

.wall-info { padding: 14px 16px 16px; }
.wall-title { font-size: 17px; font-weight: 700; letter-spacing: 1px; }
.wall-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; }
.wall-tag {
  font-size: 12px; color: var(--cinnabar);
  border: 1px solid rgba(166,59,46,.4);
  padding: 1px 8px; border-radius: 3px;
}
.wall-size { font-size: 12px; color: var(--ink-light); }

.wall-dl {
  width: 100%; margin-top: 12px;
  padding: 9px; font-size: 15px; letter-spacing: 3px;
  background: transparent; color: var(--cinnabar);
  border: 1px solid var(--cinnabar); border-radius: 6px;
  cursor: pointer; font-family: inherit;
  transition: all .2s;
}
.wall-dl:hover { background: var(--cinnabar); color: #fff; }

.empty-tip { grid-column: 1 / -1; text-align: center; color: var(--ink-light); padding: 50px 0; letter-spacing: 2px; }

/* ---------- 关于 ---------- */
.about { margin: 60px auto 0; max-width: 720px; text-align: center; padding: 0 10px; }
.about-title { font-size: 24px; letter-spacing: 6px; }
.about-rule {
  width: 80px; height: 2px; margin: 14px auto 20px;
  background: var(--cinnabar); border-radius: 2px;
}
.about p { color: var(--ink-soft); margin-bottom: 12px; font-size: 15px; }
.about-tip { background: rgba(176,141,87,.10); border: 1px solid rgba(176,141,87,.3); padding: 12px 18px; border-radius: 8px; }
.about-tip strong { color: var(--cinnabar); }

/* ---------- 页脚 ---------- */
.footer { margin-top: 60px; border-top: 1px solid var(--line); padding: 34px 0 40px; text-align: center; }
.footer-seal {
  width: 44px; height: 44px; margin: 0 auto 14px;
  background: var(--cinnabar); color: var(--paper);
  font-family: "Ma Shan Zheng", serif; font-size: 24px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 7px; box-shadow: inset 0 0 0 2px rgba(246,240,226,.55);
}
.footer p { letter-spacing: 3px; color: var(--ink-soft); }
.footer-small { font-size: 12px; color: var(--ink-light); margin-top: 6px; }

/* 修复 hidden 属性被 display 覆盖的问题（lightbox / modal 等均设置了 display:flex） */
[hidden] { display: none !important; }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(43,39,34,0.5);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  animation: fadeIn .2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  position: relative; width: 100%; max-width: 400px;
  background: var(--paper);
  border-radius: 12px; padding: 30px 32px 26px;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
  animation: pop .22s ease;
}
.modal-sm { max-width: 380px; }
@keyframes pop { from { transform: translateY(14px); opacity: 0; } to { transform: none; opacity: 1; } }

.modal-close {
  position: absolute; top: 12px; right: 16px;
  background: none; border: none; font-size: 26px; line-height: 1;
  color: var(--ink-light); cursor: pointer;
}
.modal-close:hover { color: var(--cinnabar); }

.modal-tabs { display: flex; margin-bottom: 22px; border-bottom: 1px solid var(--line); }
.mtab {
  flex: 1; padding: 10px; font-family: inherit; font-size: 16px; letter-spacing: 6px;
  background: none; border: none; cursor: pointer; color: var(--ink-light);
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.mtab.active { color: var(--cinnabar); border-bottom-color: var(--cinnabar); font-weight: 700; }

.auth-form label { display: block; font-size: 13px; letter-spacing: 2px; color: var(--ink-soft); margin: 14px 0 6px; }
.auth-form input {
  width: 100%; padding: 11px 12px; font-family: inherit; font-size: 15px;
  border: 1px solid rgba(43,39,34,.25); border-radius: 6px;
  background: #fff; color: var(--ink);
}
.auth-form input:focus { outline: none; border-color: var(--cinnabar); }
.auth-form .btn-block { margin-top: 22px; }
.form-msg { margin-top: 12px; font-size: 13px; color: var(--cinnabar); min-height: 18px; text-align: center; }

.confirm-body { text-align: center; }
.confirm-body h3 { font-size: 20px; letter-spacing: 3px; margin-bottom: 12px; }
.confirm-body p { color: var(--ink-soft); font-size: 15px; margin-bottom: 20px; }
.confirm-actions { display: flex; gap: 12px; }
.confirm-actions .btn { flex: 1; }

/* ---------- 提示 ---------- */
.toast {
  position: fixed; left: 50%; bottom: 40px; z-index: 200;
  transform: translateX(-50%);
  background: var(--ink); color: var(--paper);
  padding: 12px 26px; border-radius: 30px;
  font-size: 14px; letter-spacing: 1px;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
  animation: toastIn .25s ease;
}
.toast.error { background: var(--cinnabar); }
.toast.success { background: var(--teal); }
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 10px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ---------- 动态壁纸：真实视频播放 ---------- */
.wall-cover video {
  width: 100%; height: 100%; object-fit: cover; display: block;
}

/* 动态徽标 */
.wall-badge {
  position: absolute; top: 10px; left: 10px; z-index: 2;
  padding: 2px 10px; font-size: 12px; letter-spacing: 2px;
  color: #fff; background: var(--cinnabar);
  border-radius: 3px;
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
  animation: badgePulse 2.4s ease-in-out infinite;
}
@keyframes badgePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .55; }
}

/* ---------- 看图 / 播放 弹层 ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(20,17,14,0.92);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 24px;
  animation: fadeIn .2s ease;
}
.lightbox-body {
  max-width: min(92vw, 1200px);
  max-height: 78vh;
  display: flex; align-items: center; justify-content: center;
}
.lightbox-body img,
.lightbox-body video {
  max-width: 100%; max-height: 78vh;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  background: #000;
}
.lightbox-close {
  position: absolute; top: 16px; right: 24px;
  background: none; border: none; font-size: 40px; line-height: 1;
  color: rgba(246,240,226,.85); cursor: pointer; z-index: 2;
}
.lightbox-close:hover { color: #fff; }
.lightbox-title {
  margin-top: 14px; color: rgba(246,240,226,.85);
  font-size: 14px; letter-spacing: 2px; text-align: center;
}

/* ---------- 分页 ---------- */
.pager {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 8px;
  margin: 40px auto 8px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  position: relative;
}
.pager::before {
  content: ""; position: absolute; top: -1px; left: 50%;
  transform: translateX(-50%);
  width: 64px; height: 2px; background: var(--cinnabar);
}
.pg {
  font-family: inherit; font-size: 14px;
  min-width: 38px; height: 38px; padding: 0 10px;
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px;
  border-radius: 8px; cursor: pointer;
  background: rgba(255,253,246,.7);
  color: var(--ink-soft);
  border: 1px solid rgba(43,39,34,.22);
  transition: all .18s ease;
  font-variant-numeric: tabular-nums;
}
.pg:hover:not(:disabled):not(.active) {
  border-color: var(--cinnabar); color: var(--cinnabar);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(166,59,46,.14);
}
.pg:disabled { opacity: .38; cursor: not-allowed; }
.pg.active {
  background: var(--cinnabar); border-color: var(--cinnabar);
  color: #fff; font-weight: 700;
  box-shadow: 0 4px 14px rgba(166,59,46,.30);
  transform: none;
}
.pg-nav .pg-arr { font-size: 17px; line-height: 1; }
.pg-nav { letter-spacing: 1px; padding: 0 14px; }
.pg-ellipsis {
  min-width: 26px; text-align: center; color: var(--ink-light);
  user-select: none; letter-spacing: 1px;
}
.pg-info {
  width: 100%; text-align: center; margin-top: 6px;
  font-size: 12px; color: var(--ink-light); letter-spacing: 2px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .main-nav { display: none; }
  .topbar-inner { height: 58px; }
  .brand-text { font-size: 21px; }
  .wall-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .wall-info { padding: 10px 10px 12px; }
  .wall-title { font-size: 14px; }
  .wall-tag, .wall-size { font-size: 11px; }
  .wall-dl { font-size: 13px; padding: 8px; }
  .hero { padding: 56px 0 60px; }
  .member-name { display: none; }
}