/* ===== ThirdHub base.css — Reset / 变量 / 通用组件 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  overflow: hidden;
  height: 100dvh;
  transition: background .25s ease, color .25s ease;
}
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
a { color: var(--primary); text-decoration: none; }
img { display: block; max-width: 100%; }
::-webkit-scrollbar { width: 0; height: 0; }

/* 8px 网格工具类 */
.row { display: flex; align-items: center; }
.col { display: flex; flex-direction: column; }
.grow { flex: 1; min-width: 0; }
.gap4 { gap: 4px; } .gap8 { gap: 8px; } .gap12 { gap: 12px; } .gap16 { gap: 16px; }
.mt8 { margin-top: 8px; } .mt16 { margin-top: 16px; } .mt24 { margin-top: 24px; }
.mb8 { margin-bottom: 8px; } .mb16 { margin-bottom: 16px; }
.muted { color: var(--text-tertiary); font-size: 12px; }
.ellipsis { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.clamp2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.hidden { display: none !important; }

/* 卡片 */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 16px;
}
.card-press { transition: transform .15s ease, box-shadow .2s ease; }
.card-press:active { transform: scale(.97); }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 18px; border-radius: var(--radius-md);
  background: var(--bg-input); color: var(--text-primary);
  font-size: 14px; font-weight: 500;
  transition: opacity .2s, transform .15s, background .2s;
  user-select: none;
}
.btn:active { transform: scale(.96); opacity: .85; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-deep)); color: #fff; box-shadow: 0 4px 14px rgba(59,91,253,.35); }
.btn-accent { background: linear-gradient(135deg, var(--accent), #e8890c); color: #fff; }
.btn-danger { background: rgba(255,77,79,.12); color: var(--danger); }
.btn-ghost { background: transparent; border: 1px solid var(--border); }
.btn-sm { padding: 6px 12px; font-size: 12px; border-radius: 8px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .45; pointer-events: none; }

/* 输入框 */
.input {
  width: 100%; padding: 12px 14px;
  background: var(--bg-input); border: 1px solid transparent; border-radius: var(--radius-md);
  color: var(--text-primary); font-size: 14px; outline: none;
  transition: border-color .2s, background .2s;
}
.input:focus { border-color: var(--primary); background: var(--bg-card); }
.input::placeholder { color: var(--text-tertiary); }
textarea.input { resize: none; line-height: 1.6; }

/* 标签 */
.tag {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 6px;
  font-size: 11px; font-weight: 600; line-height: 1.5;
}
.tag-blue { background: rgba(59,91,253,.14); color: #6f8bff; }
.tag-green { background: rgba(46,204,113,.14); color: #3dd68c; }
.tag-orange { background: rgba(245,166,35,.15); color: var(--accent); }
.tag-purple { background: rgba(155,93,229,.15); color: #b98aff; }
.tag-gold { background: rgba(255,199,0,.15); color: #ffd54d; }
.tag-gray { background: rgba(140,140,150,.15); color: var(--text-tertiary); }
.tag-red { background: rgba(255,77,79,.13); color: #ff7875; }

/* Chips 横向滚动筛选 */
.chips { display: flex; gap: 8px; overflow-x: auto; padding: 4px 16px; scrollbar-width: none; }
.chip {
  flex-shrink: 0; padding: 7px 14px; border-radius: 999px;
  background: var(--bg-input); color: var(--text-secondary);
  font-size: 13px; transition: all .2s; white-space: nowrap;
}
.chip.on { background: var(--primary); color: #fff; font-weight: 600; box-shadow: 0 3px 10px rgba(59,91,253,.3); }

/* 空状态 */
.empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 64px 24px; gap: 12px; color: var(--text-tertiary); text-align: center;
}
.empty .empty-ico { width: 72px; height: 72px; opacity: .5; }
.empty .empty-title { font-size: 15px; color: var(--text-secondary); }

/* Toast */
#toast-root { position: fixed; left: 0; right: 0; bottom: 110px; z-index: 9999; display: flex; flex-direction: column; align-items: center; gap: 8px; pointer-events: none; }
.toast {
  max-width: 82vw; padding: 10px 18px; border-radius: 999px;
  background: rgba(20,22,30,.92); color: #fff; font-size: 13px;
  backdrop-filter: blur(12px); box-shadow: 0 6px 24px rgba(0,0,0,.3);
  animation: toast-in .25s ease;
}
.toast.err { background: rgba(180,40,45,.94); }
.toast.ok { background: rgba(30,140,80,.94); }
@keyframes toast-in { from { opacity: 0; transform: translateY(12px); } }
.toast.out { opacity: 0; transform: translateY(8px); transition: all .3s; }

/* 弹窗 */
.modal-mask {
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(0,0,0,.55); backdrop-filter: blur(4px);
  display: flex; align-items: flex-end; justify-content: center;
  animation: fade-in .2s ease;
}
.modal-mask.center { align-items: center; padding: 24px; }
@keyframes fade-in { from { opacity: 0; } }
.modal {
  width: 100%; max-width: 560px; max-height: 86dvh;
  background: var(--bg-page); border-radius: 20px 20px 0 0;
  display: flex; flex-direction: column; overflow: hidden;
  animation: sheet-up .28s cubic-bezier(.2,.9,.3,1);
}
.modal-mask.center .modal { border-radius: 20px; animation: pop-in .22s ease; }
@keyframes sheet-up { from { transform: translateY(40%); } }
@keyframes pop-in { from { transform: scale(.92); opacity: 0; } }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px 10px; }
.modal-title { font-size: 16px; font-weight: 700; }
.modal-close { width: 32px; height: 32px; border-radius: 50%; background: var(--bg-input); display: grid; place-items: center; color: var(--text-tertiary); font-size: 16px; }
.modal-body { flex: 1; overflow-y: auto; padding: 4px 20px 20px; -webkit-overflow-scrolling: touch; }
.modal-foot { padding: 12px 20px calc(12px + env(safe-area-inset-bottom)); display: flex; gap: 10px; }

/* 列表项 */
.list-item {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px; background: var(--bg-card);
  border-radius: var(--radius-md); transition: background .2s;
}
.list-item:active { background: var(--bg-input); }
.list-ico { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; flex-shrink: 0; background: var(--bg-input); }
.list-ico svg { width: 20px; height: 20px; }
.list-arrow { color: var(--text-tertiary); flex-shrink: 0; }

/* 分割线 */
.hr { height: 1px; background: var(--border); margin: 12px 0; border: none; }

/* 加载动画 */
.spinner { width: 22px; height: 22px; border: 2.5px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-row { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 24px; color: var(--text-tertiary); font-size: 13px; }

/* 骨架屏 */
.skeleton { position: relative; overflow: hidden; background: var(--bg-input); border-radius: var(--radius-md); }
.skeleton::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.06), transparent);
  animation: shimmer 1.4s infinite;
}
@keyframes shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }

/* SVG 图标基础 */
svg.ico { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
svg.ico.fill { fill: currentColor; stroke: none; }

/* ===== 首次启动引导（v1.4） ===== */
.ob {
  position: fixed; inset: 0; z-index: 9500;
  background: var(--bg-page);
  display: flex; align-items: center; justify-content: center;
  overflow-y: auto;
  animation: fade-in .25s ease;
}
.ob.ob-out { opacity: 0; transition: opacity .25s ease; }
.ob-inner {
  width: 100%; max-width: 420px; padding: 40px 26px calc(30px + env(safe-area-inset-bottom));
  display: flex; flex-direction: column; align-items: center; text-align: center;
}
.ob-wide { max-width: 560px; }
.ob-hero {
  width: 120px; height: 120px; border-radius: 34px;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--ob-accent, var(--primary)), color-mix(in srgb, var(--ob-accent, var(--primary)) 55%, #000));
  box-shadow: 0 16px 40px color-mix(in srgb, var(--ob-accent, var(--primary)) 40%, transparent);
  margin-bottom: 26px; animation: pop-in .3s ease;
}
.ob-hero-ico, .ob-hero svg { width: 58px; height: 58px; }
.ob-logo {
  width: 76px; height: 76px; border-radius: 24px;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  box-shadow: 0 12px 30px rgba(59,91,253,.35);
  margin-bottom: 20px;
}
.ob-logo svg { width: 38px; height: 38px; }
.ob-title { font-size: 23px; font-weight: 800; margin-bottom: 12px; }
.ob-desc { font-size: 13.5px; color: var(--text-secondary); line-height: 1.9; margin-bottom: 26px; }
.ob-dots { display: flex; gap: 7px; margin-bottom: 26px; }
.ob-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--bg-input); transition: all .2s; }
.ob-dot.on { width: 20px; border-radius: 99px; background: var(--primary); }
.ob-btn { width: 100%; max-width: 300px; padding: 13px; font-size: 15px; border-radius: 14px; }
.ob-skip { margin-top: 16px; font-size: 13px; color: var(--text-tertiary); padding: 6px 12px; }
.ob-form { width: 100%; max-width: 320px; display: flex; flex-direction: column; gap: 10px; }
.ob-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; width: 100%; margin-bottom: 16px; }
@media (max-width: 400px) { .ob-grid { grid-template-columns: repeat(2, 1fr); } }
.ob-board {
  position: relative;
  display: flex; flex-direction: column; align-items: flex-start; gap: 5px;
  padding: 13px 12px; border-radius: 14px; text-align: left;
  background: var(--bg-card); border: 1.5px solid var(--border);
  transition: all .15s;
}
.ob-board.on { border-color: var(--primary); background: rgba(59,91,253,.08); }
.ob-board-ico { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--bg-input); color: var(--text-secondary); }
.ob-board.on .ob-board-ico { background: rgba(59,91,253,.16); color: var(--primary); }
.ob-board-ico svg { width: 19px; height: 19px; }
.ob-board-name { font-size: 13.5px; font-weight: 700; color: var(--text-primary); }
.ob-board-desc { font-size: 10.5px; color: var(--text-tertiary); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.ob-board-check {
  position: absolute; top: 8px; right: 8px;
  width: 19px; height: 19px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--primary); color: #fff;
  opacity: 0; transform: scale(.5); transition: all .15s;
}
.ob-board.on .ob-board-check { opacity: 1; transform: scale(1); }
.ob-board-check svg { width: 11px; height: 11px; }
.ob-count { font-size: 12.5px; color: var(--text-tertiary); margin-bottom: 14px; }
.ob-count b { color: var(--primary); }

/* ================= v1.5 引导落地页 ================= */
.ob-landing { width: 100%; height: 100%; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.obl-hero {
  display: flex; flex-direction: column; align-items: center;
  padding: 56px 24px 40px; text-align: center;
  background:
    radial-gradient(600px 300px at 50% 0%, rgba(59,91,253,.18), transparent 70%),
    radial-gradient(400px 240px at 85% 30%, rgba(155,89,255,.12), transparent 70%);
}
.obl-orbit { position: relative; width: 280px; height: 280px; margin-bottom: 22px; }
.obl-ring { position: absolute; inset: 0; pointer-events: none; }
.obl-badge {
  position: absolute; top: 50%; left: 50%;
  width: 34px; height: 34px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--bg-card); box-shadow: var(--shadow-card);
  animation: obl-orbit var(--dur) linear infinite;
}
.obl-badge.rev { animation-direction: reverse; }
.obl-badge .vendor-ico, .obl-badge svg, .obl-badge img { width: 22px !important; height: 22px !important; }
@keyframes obl-orbit {
  from { transform: translate(-50%,-50%) rotate(var(--a0)) translate(var(--r)) rotate(calc(-1 * var(--a0))); }
  to   { transform: translate(-50%,-50%) rotate(calc(var(--a0) + 1turn)) translate(var(--r)) rotate(calc(-1 * (var(--a0) + 1turn))); }
}
.obl-core {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 64px; height: 64px; border-radius: 20px;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--primary), #9b59ff);
  box-shadow: 0 8px 30px rgba(59,91,253,.45);
}
.obl-core svg { width: 32px; height: 32px; }
.obl-title { font-size: 34px; font-weight: 900; letter-spacing: 1px; }
.obl-tag { font-size: 14px; color: var(--text-secondary); margin-top: 6px; }
.obl-cta { margin-top: 22px; display: flex; flex-direction: column; align-items: center; }
.obl-sec { padding: 18px 20px; max-width: 720px; margin: 0 auto; width: 100%; }
.obl-sec-title { font-size: 17px; font-weight: 800; margin-bottom: 12px; }
.obl-feats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (min-width: 640px) { .obl-feats { grid-template-columns: repeat(4, 1fr); } }
.obl-feat {
  padding: 14px; border-radius: 14px;
  background: var(--bg-card); box-shadow: var(--shadow-card);
}
.obl-feat-ico {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  background: rgba(59,91,253,.12); color: var(--primary); margin-bottom: 8px;
}
.obl-feat-ico svg { width: 18px; height: 18px; }
.obl-feat-t { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.obl-feat-d { font-size: 12px; color: var(--text-tertiary); line-height: 1.6; }
.obl-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.obl-chip {
  padding: 6px 12px; border-radius: 999px; font-size: 12.5px; font-weight: 600;
  background: var(--bg-card); border: 1px solid var(--border); color: var(--text-secondary);
}
.obl-faq {
  background: var(--bg-card); border-radius: 12px; margin-bottom: 8px;
  box-shadow: var(--shadow-card); overflow: hidden;
}
.obl-faq summary {
  padding: 13px 16px; font-size: 14px; font-weight: 600; cursor: pointer;
  list-style: none; display: flex; align-items: center;
}
.obl-faq summary::after { content: '›'; margin-left: auto; color: var(--text-tertiary); transition: transform .2s; }
.obl-faq[open] summary::after { transform: rotate(90deg); }
.obl-faq-a { padding: 0 16px 13px; font-size: 13px; color: var(--text-secondary); line-height: 1.8; }

/* 注册子页面 */
.reg-page { max-width: 420px; margin: 0 auto; padding-top: 10px; }
.reg-hero {
  width: 60px; height: 60px; border-radius: 18px; margin: 8px auto 14px;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--primary), #9b59ff);
  box-shadow: 0 8px 30px rgba(59,91,253,.4);
}
.reg-hero svg { width: 30px; height: 30px; }
.reg-title { font-size: 20px; font-weight: 800; text-align: center; margin-bottom: 6px; }
.form-item { margin-bottom: 14px; }
.form-label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }