/* 同频 · tp.css
 * 设计 token + 组件。H5 优先,手机屏第一,桌面居中 520px。
 * 对齐 design-v1_1.md §8:墨黑 / 暖金 / 米白 / 大圆角 / 克制。
 */

:root {
  --tp-ink:      #1a1a1a;
  --tp-gold:     #c9a961;
  --tp-bg:       #f8f6f2;
  --tp-card:     #ffffff;
  --tp-text-1:   #1a1a1a;
  --tp-text-2:   #666666;
  --tp-text-3:   #999999;
  --tp-text-4:   #bbbbbb;
  --tp-line:     #ebe7df;
  --tp-danger:   #b04545;

  --tp-radius-lg: 24px;
  --tp-radius-md: 16px;
  --tp-radius-sm: 8px;
  --tp-radius-pill: 999px;

  --tp-shadow-card:  0 20px 60px rgba(0,0,0,.04);
  --tp-shadow-float: 0 8px 28px rgba(0,0,0,.08);

  --tp-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
             "Helvetica Neue", Helvetica, Arial, sans-serif;
  --tp-font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

/* ===== reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--tp-font);
  font-size: 15px;
  line-height: 1.6;
  color: var(--tp-text-1);
  background: var(--tp-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ===== app shell ===== */
.tp-shell {
  min-height: 100%;
  min-height: 100dvh;
  padding: env(safe-area-inset-top, 0) 0 env(safe-area-inset-bottom, 0) 0;
}
.tp-container {
  max-width: 520px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}
.tp-container--tight { padding: 16px 20px 32px; }

/* ===== topbar ===== */
.tp-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0 16px;
}
.tp-topbar__title {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .08em;
}
.tp-topbar__back {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--tp-text-3);
  font-size: 14px;
  padding: 6px 2px;
}
.tp-topbar__back:hover { color: var(--tp-text-1); }

/* ===== logo mark ===== */
.tp-mark {
  width: 80px; height: 80px;
  background: var(--tp-ink);
  color: var(--tp-gold);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
  font-weight: 300;
  letter-spacing: 0;
  line-height: 1;
}
.tp-mark--sm { width: 40px; height: 40px; font-size: 18px; }
.tp-mark--xs { width: 28px; height: 28px; font-size: 13px; }

/* ===== typography ===== */
.tp-brand {
  font-size: 2.2rem;
  font-weight: 300;
  letter-spacing: .3em;
  color: var(--tp-ink);
}
.tp-brand--sm { font-size: 1.2rem; letter-spacing: .25em; }
.tp-subtitle {
  color: var(--tp-text-3);
  font-size: .78rem;
  letter-spacing: .5em;
  text-transform: uppercase;
  font-weight: 300;
}
.tp-h1 { font-size: 1.5rem; font-weight: 500; letter-spacing: .02em; }
.tp-h2 { font-size: 1.1rem; font-weight: 500; letter-spacing: .04em; }
.tp-section-title {
  font-size: .85rem;
  letter-spacing: .3em;
  color: var(--tp-text-3);
  text-transform: uppercase;
  margin: 24px 0 12px;
}
.tp-muted  { color: var(--tp-text-3); font-size: .85rem; }
.tp-muted-2 { color: var(--tp-text-4); font-size: .78rem; letter-spacing: .05em; }
.tp-text-2 { color: var(--tp-text-2); }

.tp-divider {
  width: 40px; height: 1px;
  background: var(--tp-gold);
  margin: 20px auto;
  border: 0;
}
.tp-hr {
  height: 1px;
  background: var(--tp-line);
  border: 0;
  margin: 16px 0;
}

/* ===== card ===== */
.tp-card {
  background: var(--tp-card);
  border-radius: var(--tp-radius-lg);
  padding: 28px 24px;
  box-shadow: var(--tp-shadow-card);
}
.tp-card + .tp-card { margin-top: 16px; }
.tp-card--center { text-align: center; }
.tp-card--tight { padding: 20px 18px; }

/* ===== buttons ===== */
.tp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: var(--tp-radius-pill);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .1em;
  transition: opacity .15s, transform .1s;
  user-select: none;
}
.tp-btn:active { transform: scale(.98); }
.tp-btn:disabled, .tp-btn[aria-disabled="true"] {
  opacity: .45;
  cursor: not-allowed;
}
.tp-btn--primary {
  background: var(--tp-ink);
  color: #fff;
}
.tp-btn--primary:hover:not(:disabled) { opacity: .88; }
.tp-btn--ghost {
  background: transparent;
  color: var(--tp-ink);
  border: 1px solid var(--tp-ink);
}
.tp-btn--gold {
  background: var(--tp-gold);
  color: var(--tp-ink);
}
.tp-btn--text {
  min-height: 0;
  padding: 4px 8px;
  color: var(--tp-text-3);
  font-weight: 400;
  letter-spacing: normal;
  background: transparent;
}
.tp-btn--text:hover { color: var(--tp-ink); }
.tp-btn--block { width: 100%; }
.tp-btn--sm { min-height: 36px; padding: 0 14px; font-size: 13px; letter-spacing: .06em; }

/* ===== form ===== */
.tp-field { margin-bottom: 18px; }
.tp-label {
  display: block;
  font-size: .78rem;
  letter-spacing: .2em;
  color: var(--tp-text-3);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.tp-input {
  display: block;
  width: 100%;
  height: 48px;
  padding: 0 16px;
  background: #fbfaf7;
  border: 1px solid var(--tp-line);
  border-radius: var(--tp-radius-md);
  font-size: 15px;
  color: var(--tp-text-1);
  letter-spacing: .04em;
  outline: none;
  transition: border-color .15s, background .15s;
}
.tp-input::placeholder { color: var(--tp-text-4); }
.tp-input:focus { border-color: var(--tp-ink); background: #fff; }
.tp-input--code {
  font-family: var(--tp-font-mono);
  font-size: 20px;
  letter-spacing: .5em;
  text-align: center;
  text-transform: uppercase;
}
.tp-textarea {
  min-height: 96px;
  padding: 14px 16px;
  resize: vertical;
}
.tp-field-row {
  display: flex;
  gap: 8px;
}
.tp-field-row .tp-input { flex: 1; }

.tp-hint {
  font-size: .8rem;
  color: var(--tp-text-3);
  margin-top: 8px;
}
.tp-hint--error { color: var(--tp-danger); }

/* ===== benefit card ===== */
.tp-benefit {
  background: var(--tp-card);
  border-radius: var(--tp-radius-lg);
  box-shadow: var(--tp-shadow-card);
  overflow: hidden;
  display: block;
}
.tp-benefit + .tp-benefit { margin-top: 16px; }
.tp-benefit__cover {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #eee6d8;
  object-fit: cover;
  display: block;
}
.tp-benefit__body { padding: 18px 20px 20px; }
.tp-benefit__title {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--tp-ink);
  margin-bottom: 4px;
}
.tp-benefit__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--tp-text-3);
  font-size: .8rem;
  letter-spacing: .05em;
  margin-bottom: 10px;
}
.tp-benefit__meta-dot { width: 3px; height: 3px; background: var(--tp-text-4); border-radius: 50%; }
.tp-benefit__value {
  display: inline-block;
  color: var(--tp-gold);
  font-size: .85rem;
  letter-spacing: .04em;
}
.tp-benefit__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
}
.tp-benefit__stat {
  color: var(--tp-text-3);
  font-size: .78rem;
  letter-spacing: .08em;
}

/* ===== merchant chip / row ===== */
.tp-merchants {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.tp-merchant-chip {
  background: #fff;
  border: 1px solid var(--tp-line);
  border-radius: var(--tp-radius-md);
  padding: 14px 12px;
  text-align: center;
  display: block;
}
.tp-merchant-chip__mark {
  width: 40px; height: 40px;
  background: var(--tp-ink);
  color: var(--tp-gold);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  margin-bottom: 8px;
}
.tp-merchant-chip__name {
  font-size: .9rem;
  font-weight: 500;
  color: var(--tp-ink);
}
.tp-merchant-chip__type {
  font-size: .75rem;
  color: var(--tp-text-3);
  margin-top: 2px;
  letter-spacing: .05em;
}

.tp-merchant-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--tp-line);
}
.tp-merchant-row:first-child { border-top: 0; }
.tp-merchant-row__body { flex: 1; min-width: 0; }
.tp-merchant-row__name {
  font-size: 1rem;
  font-weight: 500;
  color: var(--tp-ink);
}
.tp-merchant-row__sub {
  font-size: .78rem;
  color: var(--tp-text-3);
  margin-top: 2px;
  letter-spacing: .05em;
}
.tp-merchant-row__arrow {
  color: var(--tp-text-4);
  font-size: 20px;
  line-height: 1;
}

/* ===== tabs ===== */
.tp-tabs {
  display: flex;
  background: #efece5;
  border-radius: var(--tp-radius-pill);
  padding: 4px;
  margin: 8px 0 20px;
}
.tp-tabs__item {
  flex: 1;
  text-align: center;
  padding: 10px 0;
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--tp-text-2);
  border-radius: var(--tp-radius-pill);
  cursor: pointer;
  user-select: none;
  transition: background .15s, color .15s;
}
.tp-tabs__item[aria-selected="true"] {
  background: #fff;
  color: var(--tp-ink);
  box-shadow: 0 2px 8px rgba(0,0,0,.05);
}

/* ===== claim card ===== */
.tp-claim {
  background: var(--tp-card);
  border-radius: var(--tp-radius-lg);
  box-shadow: var(--tp-shadow-card);
  padding: 22px 22px 24px;
}
.tp-claim + .tp-claim { margin-top: 14px; }
.tp-claim__title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--tp-ink);
  margin-bottom: 2px;
}
.tp-claim__merchant {
  font-size: .8rem;
  color: var(--tp-text-3);
  letter-spacing: .05em;
  margin-bottom: 16px;
}
.tp-claim__label {
  font-size: .72rem;
  letter-spacing: .3em;
  color: var(--tp-text-3);
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 8px;
}
.tp-claim__code {
  font-family: var(--tp-font-mono);
  font-size: 2rem;
  letter-spacing: .4em;
  text-align: center;
  color: var(--tp-ink);
  padding: 18px 0;
  background: #faf7ef;
  border-radius: var(--tp-radius-md);
  border: 1px dashed var(--tp-gold);
}
.tp-claim__deadline {
  text-align: center;
  color: var(--tp-text-3);
  font-size: .8rem;
  margin-top: 12px;
  letter-spacing: .05em;
}

/* ===== badge ===== */
.tp-badge {
  display: inline-block;
  padding: 3px 10px;
  font-size: .72rem;
  letter-spacing: .1em;
  border-radius: var(--tp-radius-pill);
  background: var(--tp-line);
  color: var(--tp-text-2);
}
.tp-badge--active   { background: #efe7cf; color: #7c642a; }
.tp-badge--claimed  { background: #e8e9ea; color: #555; }
.tp-badge--redeemed { background: #e0e4dc; color: #4f6b3a; }
.tp-badge--expired  { background: #ece6e6; color: #8a6a6a; }

/* ===== status / empty ===== */
.tp-empty {
  text-align: center;
  padding: 48px 20px;
  color: var(--tp-text-3);
  font-size: .9rem;
  letter-spacing: .05em;
}
.tp-empty__title {
  color: var(--tp-text-2);
  font-size: 1rem;
  margin-bottom: 6px;
}

/* ===== toast ===== */
.tp-toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  max-width: 84vw;
  padding: 12px 20px;
  background: rgba(26,26,26,.92);
  color: #fff;
  border-radius: var(--tp-radius-pill);
  font-size: .88rem;
  letter-spacing: .04em;
  box-shadow: var(--tp-shadow-float);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
  z-index: 9999;
  text-align: center;
}
.tp-toast--show { opacity: 1; }

/* ===== loading shimmer (simple) ===== */
.tp-loading {
  text-align: center;
  color: var(--tp-text-3);
  padding: 40px 0;
  font-size: .85rem;
  letter-spacing: .1em;
}

/* ===== bottom nav ===== */
.tp-bottom-nav {
  display: flex;
  gap: 8px;
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--tp-line);
}
.tp-bottom-nav__item {
  flex: 1;
  text-align: center;
  padding: 10px 0;
  font-size: .8rem;
  color: var(--tp-text-3);
  letter-spacing: .08em;
}
.tp-bottom-nav__item[aria-current="true"] { color: var(--tp-ink); font-weight: 500; }

/* ===== misc ===== */
.tp-row { display: flex; align-items: center; gap: 10px; }
.tp-row--between { justify-content: space-between; }
.tp-grow { flex: 1; min-width: 0; }
.tp-center { text-align: center; }
.tp-stack > * + * { margin-top: 12px; }
.tp-stack--lg > * + * { margin-top: 24px; }

.tp-hide { display: none !important; }

/* ===== responsive tweaks ===== */
@media (max-width: 360px) {
  .tp-brand { font-size: 1.9rem; }
  .tp-container { padding: 20px 16px 40px; }
  .tp-card { padding: 22px 18px; }
}