/* Trang Thư mời đồng hành (/thu-moi) — dựng theo hồ sơ tài trợ PDF: navy · gold · nền kem */
:root {
  --tm-navy: #17355E;
  --tm-navy-2: #1E4272;
  --tm-navy-deep: #102845;
  --tm-gold: #C0954D;
  --tm-gold-2: #DFC08A;
  --tm-gold-pale: #F3E7D2;
  --tm-cream: #FDF6EE;
  --tm-cream-2: #FAEDE0;
  --tm-ink: #2E3B4E;
  --tm-ink-dim: #5C6879;
}

body.tm-body {
  font-family: 'Quicksand', 'Be Vietnam Pro', system-ui, sans-serif;
  background: linear-gradient(180deg, var(--tm-cream) 0%, var(--tm-cream-2) 100%);
  color: var(--tm-ink);
  font-size: 16px;
}

.tm-wrap { max-width: 900px; margin: 0 auto; padding: 0 22px; }

/* ---------- Bìa ---------- */
.tm-cover {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 90px 22px 60px;
  overflow: hidden;
  color: #fff;
}
.tm-cover::before {
  content: '';
  position: absolute; inset: -20px;
  background: url('../assets/thu-moi/cover-bg.jpg') center/cover no-repeat;
  filter: blur(9px) saturate(0.9);
  transform: scale(1.06);
}
.tm-cover::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(23,53,94,0.72) 0%, rgba(16,40,69,0.88) 55%, rgba(11,30,54,0.96) 100%);
}
.tm-cover > * { position: relative; z-index: 1; }

.tm-cover-top {
  position: absolute; top: 26px; left: 0; right: 0; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 0 34px;
}
.tm-cover-top img { width: 62px; height: auto; }
.tm-cover-org { text-align: right; font-weight: 700; font-size: 13px; letter-spacing: 0.04em; line-height: 1.5; }

.tm-emblem { width: min(330px, 76vw); height: auto; filter: drop-shadow(0 18px 40px rgba(0,0,0,0.45)); }

.tm-cover-title {
  font-family: 'Playfair Display', Georgia, serif;
  margin: 22px 0 6px;
  line-height: 0.92;
  color: #F2E4C8;
}
.tm-cover-title .tm-20 { font-size: clamp(72px, 15vw, 132px); font-weight: 700; letter-spacing: -0.02em; }
.tm-cover-title .tm-nam { font-size: clamp(40px, 8vw, 70px); font-style: italic; }
.tm-cover-title .tm-tro-ve {
  display: block; font-size: clamp(44px, 9vw, 78px); font-style: italic; font-weight: 500;
  margin-top: -0.12em; color: #EFDFC0;
}
.tm-cover-slogan {
  font-weight: 700; letter-spacing: 0.12em; font-size: clamp(13px, 2.4vw, 18px);
  color: #E4D3AE; margin: 16px 0 0; text-transform: uppercase;
}
.tm-cover-pill {
  display: inline-block; margin-top: 44px;
  background: linear-gradient(180deg, #EBD7B0, #D9BE8E);
  color: var(--tm-navy-deep);
  font-weight: 700; letter-spacing: 0.06em; font-size: clamp(15px, 3vw, 22px);
  padding: 15px 42px; border-radius: 999px;
  box-shadow: 0 14px 34px -14px rgba(0,0,0,0.6);
  text-transform: uppercase;
}

/* ---------- Khung trang nội dung ---------- */
.tm-page { padding: 54px 0 10px; position: relative; }
.tm-page + .tm-page { border-top: 1px dashed rgba(192,149,77,0.4); }
.tm-page-label {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  font-size: 12.5px; font-weight: 700; letter-spacing: 0.06em;
  color: var(--tm-navy); text-transform: uppercase; margin-bottom: 28px;
}
.tm-page-label .tm-years { color: var(--tm-navy-2); }

.tm-h1 {
  font-size: clamp(27px, 5vw, 40px); font-weight: 700; color: var(--tm-navy);
  text-align: center; margin: 0 0 26px; line-height: 1.25;
}
.tm-h2 { font-size: clamp(21px, 3.6vw, 28px); font-weight: 700; color: var(--tm-navy); margin: 0 0 6px; }
.tm-h2--center { text-align: center; }
.tm-sub-center { text-align: center; color: var(--tm-navy-2); font-weight: 600; letter-spacing: 0.05em; font-size: 13.5px; text-transform: uppercase; margin: 0 0 24px; }

/* ---------- Thư ---------- */
.tm-letter p { margin: 0 0 17px; line-height: 1.75; text-align: justify; }
.tm-letter .tm-sign { margin-top: 24px; line-height: 1.9; }

/* Vì sao đồng hành — lưới 2x2 trên nền ảnh trường mờ */
.tm-why {
  margin-top: 34px; padding: 28px 26px 22px; border-radius: 14px;
  position: relative; overflow: hidden;
  background: #fff;
  box-shadow: 0 14px 40px -22px rgba(23,53,94,0.35);
}
.tm-why::before {
  content: ''; position: absolute; inset: 0;
  background: url('../assets/thu-moi/truong-bg.jpg') center 70%/cover no-repeat;
  opacity: 0.09;
}
.tm-why > * { position: relative; }
.tm-why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-top: 18px; }
.tm-why-item { padding: 18px 20px; }
.tm-why-item:nth-child(odd) { border-right: 1px solid rgba(23,53,94,0.18); }
.tm-why-item:nth-child(-n+2) { border-bottom: 1px solid rgba(23,53,94,0.18); }
.tm-why-item h3 { margin: 0 0 8px; font-size: 17px; font-weight: 700; color: var(--tm-gold); }
.tm-why-item p { margin: 0; font-size: 14.5px; line-height: 1.65; color: var(--tm-ink-dim); }

/* ---------- Thẻ navy (dải số liệu) ---------- */
.tm-navy-card {
  background: linear-gradient(160deg, var(--tm-navy) 0%, var(--tm-navy-deep) 100%);
  color: #fff; border-radius: 20px; padding: 26px 28px;
  box-shadow: 0 20px 50px -26px rgba(16,40,69,0.7);
}
.tm-stats { display: flex; align-items: stretch; text-align: center; }
.tm-stat { flex: 1; padding: 4px 10px; }
.tm-stat + .tm-stat { border-left: 1px solid rgba(255,255,255,0.24); }
.tm-stat-num { font-size: clamp(28px, 5.4vw, 44px); font-weight: 700; color: var(--tm-gold-2); line-height: 1.1; }
.tm-stat-num--white { color: #fff; }
.tm-stat-lbl { font-size: 12px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--tm-gold-2); margin-top: 4px; }
.tm-stat-lbl--white { color: rgba(255,255,255,0.9); }
.tm-navy-note { text-align: center; font-size: 14.5px; line-height: 1.6; margin: 18px 0 0; color: rgba(255,255,255,0.92); }

/* ---------- Gói tài trợ: bảng + thẻ ý nghĩa ---------- */
.tm-packages { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: stretch; margin-top: 8px; }
.tm-pkg-table { border-radius: 12px; overflow: hidden; background: #FFFBF6; box-shadow: 0 12px 34px -22px rgba(23,53,94,0.4); }
.tm-pkg-head { display: grid; grid-template-columns: 1fr 1.2fr; background: var(--tm-navy); color: #fff; font-weight: 700; font-size: 13px; letter-spacing: 0.05em; text-transform: uppercase; padding: 12px 18px; }
.tm-pkg-row { display: grid; grid-template-columns: 1fr 1.2fr; align-items: center; gap: 10px; padding: 18px; }
.tm-pkg-row + .tm-pkg-row { border-top: 1px solid rgba(192,149,77,0.3); }
.tm-pkg-row:nth-child(even) { background: rgba(243,231,210,0.35); }
.tm-pkg-name { font-weight: 700; color: var(--tm-navy); font-size: 15px; text-transform: uppercase; letter-spacing: 0.03em; }
.tm-pkg-name--gold { color: var(--tm-gold); }
.tm-pkg-amt { font-weight: 700; color: var(--tm-gold); font-size: 16px; }
.tm-pkg-amt small { display: block; font-weight: 500; color: var(--tm-ink-dim); font-size: 13px; }

.tm-meaning { text-align: center; display: flex; flex-direction: column; justify-content: center; gap: 6px; }
.tm-meaning-eyebrow { font-size: 12.5px; font-weight: 700; letter-spacing: 0.14em; color: var(--tm-gold-2); text-transform: uppercase; }
.tm-meaning-quote { font-family: 'Playfair Display', Georgia, serif; font-size: clamp(19px, 3.4vw, 26px); line-height: 1.35; margin: 10px 0 2px; }
.tm-meaning-quote span { color: var(--tm-gold-2); }
/* Dùng Quicksand: font serif render số 0 giống chữ "o" thường */
.tm-meaning-ck { font-size: clamp(38px, 8vw, 62px); font-weight: 700; letter-spacing: 0.18em; color: var(--tm-gold-2); margin: 14px 0 6px; }
.tm-meaning-big { font-size: clamp(30px, 6vw, 44px); font-weight: 700; color: var(--tm-gold-2); line-height: 1.1; }
.tm-meaning-foot { font-size: 12.5px; line-height: 1.6; color: rgba(255,255,255,0.85); margin-top: 12px; }

/* ---------- Thẻ quyền lợi theo hạng ---------- */
.tm-tiers { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.tm-tier { background: #fff; border: 1.5px solid var(--tm-navy); border-radius: 14px; padding: 20px 22px; }
.tm-tier--gold { border-color: var(--tm-gold); background: #FFFCF7; }
.tm-tier h3 { margin: 0; font-size: 22px; font-weight: 700; color: var(--tm-navy); }
.tm-tier--gold h3 { color: var(--tm-gold); }
.tm-tier-amt { font-weight: 700; color: var(--tm-navy-2); margin: 2px 0 10px; font-size: 15.5px; }
.tm-tier ul { margin: 0; padding-left: 18px; }
.tm-tier li { font-size: 14.5px; line-height: 1.65; color: var(--tm-ink); margin-bottom: 4px; }

/* ---------- Hiện vật (navy 3 cột) ---------- */
.tm-inkind { margin-top: 26px; }
.tm-inkind-title { text-align: center; font-size: clamp(20px, 3.4vw, 26px); font-weight: 700; color: var(--tm-gold-2); margin: 0 0 20px; }
.tm-inkind-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.tm-inkind-col { padding: 6px 20px; }
.tm-inkind-col + .tm-inkind-col { border-left: 1px solid rgba(255,255,255,0.24); }
.tm-inkind-col h4 { margin: 0 0 8px; font-size: 16px; font-weight: 700; color: #fff; }
.tm-inkind-col p { margin: 0; font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.86); }

/* ---------- Các bước tiếp theo ---------- */
.tm-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 12px; text-align: center; }
.tm-step-num { font-size: 34px; font-weight: 700; color: var(--tm-gold); line-height: 1; }
.tm-step-name { font-weight: 700; color: var(--tm-navy); font-size: 14.5px; margin: 6px 0 3px; line-height: 1.4; }
.tm-step-date { font-size: 13px; color: var(--tm-ink-dim); }
.tm-steps-note { text-align: center; font-size: 12.5px; color: var(--tm-ink-dim); margin: 16px 0 0; font-style: italic; }

/* ---------- CTA Tài trợ (thay khối chuyển khoản trong PDF) ---------- */
.tm-cta {
  margin-top: 30px; text-align: center; padding: 34px 26px;
  border-radius: 20px;
  background: linear-gradient(160deg, var(--tm-navy) 0%, var(--tm-navy-deep) 100%);
  box-shadow: 0 22px 54px -26px rgba(16,40,69,0.75);
  color: #fff;
}
.tm-cta h3 { margin: 0 0 8px; font-size: clamp(21px, 4vw, 28px); font-weight: 700; color: var(--tm-gold-2); }
.tm-cta p { margin: 0 auto 22px; max-width: 560px; font-size: 15px; line-height: 1.7; color: rgba(255,255,255,0.9); }
.btn-tm-sponsor {
  display: inline-flex; align-items: center; gap: 12px; cursor: pointer;
  background: linear-gradient(180deg, #EBD7B0, #D3B47F);
  color: var(--tm-navy-deep); border: 0; border-radius: 999px;
  font-family: inherit; font-weight: 700; font-size: clamp(17px, 3.2vw, 22px);
  letter-spacing: 0.04em; text-transform: uppercase;
  padding: 18px 52px;
  box-shadow: 0 16px 38px -14px rgba(0,0,0,0.62);
  transition: transform 0.16s ease, box-shadow 0.16s ease, filter 0.16s ease;
  animation: tm-pulse 2.6s ease-in-out infinite;
}
.btn-tm-sponsor:hover { transform: translateY(-2px); filter: brightness(1.06); box-shadow: 0 22px 44px -14px rgba(0,0,0,0.7); }
.btn-tm-sponsor:active { transform: translateY(0); }
@keyframes tm-pulse {
  0%, 100% { box-shadow: 0 16px 38px -14px rgba(0,0,0,0.62), 0 0 0 0 rgba(223,192,138,0.5); }
  50% { box-shadow: 0 16px 38px -14px rgba(0,0,0,0.62), 0 0 0 16px rgba(223,192,138,0); }
}
@media (prefers-reduced-motion: reduce) { .btn-tm-sponsor { animation: none; } }
.tm-cta-contact { margin: 20px 0 0; font-size: 14px; color: rgba(255,255,255,0.86); }
.tm-cta-contact a { color: var(--tm-gold-2); font-weight: 700; }

/* ---------- Ban tổ chức ---------- */
.tm-btc-tagline { text-align: center; font-size: 14px; color: rgba(255,255,255,0.9); margin: 0 0 18px; }
.tm-meet { text-align: center; font-weight: 700; letter-spacing: 0.08em; color: var(--tm-gold); text-transform: uppercase; margin: 34px 0 24px; font-size: clamp(14px, 2.6vw, 18px); }
.tm-btc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px 16px; }
.tm-btc-card { text-align: center; }
.tm-btc-photo {
  width: 108px; height: 108px; border-radius: 50%; object-fit: cover;
  border: 3px solid var(--tm-gold-2); box-shadow: 0 10px 24px -12px rgba(23,53,94,0.55);
}
.tm-btc-role { font-size: 12px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--tm-gold); margin-top: 12px; }
.tm-btc-name { font-size: 17px; font-weight: 700; color: var(--tm-navy); }
.tm-btc-meta { font-size: 11.5px; color: var(--tm-ink-dim); margin-top: 2px; }

.tm-closing { margin-top: 46px; font-style: italic; color: var(--tm-ink-dim); line-height: 1.8; border-bottom: 1px solid rgba(192,149,77,0.45); padding-bottom: 16px; max-width: 560px; }
.tm-foot { text-align: center; padding: 34px 0 56px; }
.tm-foot-title { font-weight: 700; font-size: 19px; color: var(--tm-navy); }
.tm-foot-sub { font-weight: 600; color: var(--tm-navy-2); margin-top: 6px; }
.tm-foot-sub a { color: var(--tm-gold); font-weight: 700; }

/* Nút nổi quay lại trang chủ */
.tm-home-link {
  position: fixed; right: 18px; bottom: 18px; z-index: 60;
  background: var(--tm-navy); color: #fff; border-radius: 999px;
  padding: 11px 20px; font-weight: 700; font-size: 13.5px;
  box-shadow: 0 12px 30px -12px rgba(16,40,69,0.8);
}
.tm-home-link:hover { background: var(--tm-navy-2); color: #fff; }

/* ---------- Khối QR trong popup tài trợ ---------- */
.sp-qr-block { margin-top: 20px; padding-top: 18px; border-top: 1px dashed var(--line-strong); }
.sp-qr-head { font-weight: 700; color: var(--cyan-deep); margin-bottom: 12px; font-size: 15px; }
.sp-qr-head span { font-weight: 500; color: var(--ink-dim); font-size: 13px; }

/* ---------- Responsive ---------- */
@media (max-width: 780px) {
  .tm-packages, .tm-tiers { grid-template-columns: 1fr; }
  .tm-inkind-grid { grid-template-columns: 1fr; }
  .tm-inkind-col + .tm-inkind-col { border-left: 0; border-top: 1px solid rgba(255,255,255,0.24); margin-top: 14px; padding-top: 16px; }
  .tm-btc-grid { grid-template-columns: repeat(2, 1fr); }
  .tm-steps { grid-template-columns: repeat(2, 1fr); gap: 22px 14px; }
}
@media (max-width: 560px) {
  .tm-why-grid { grid-template-columns: 1fr; }
  .tm-why-item:nth-child(odd) { border-right: 0; }
  .tm-why-item { border-bottom: 1px solid rgba(23,53,94,0.18); }
  .tm-why-item:last-child { border-bottom: 0; }
  .tm-stats { flex-direction: column; gap: 16px; }
  .tm-stat + .tm-stat { border-left: 0; border-top: 1px solid rgba(255,255,255,0.24); padding-top: 16px; }
  .tm-cover-top { padding: 0 18px; }
  .tm-cover-org { font-size: 11px; }
  .tm-navy-card { padding: 22px 18px; }
}