* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, -apple-system, sans-serif; background: #f2f6fc; color: #16324f; }
a { color: #0b5ed7; }

.topbar { background: #0b5ed7; color: #fff; padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.brand { font-size: 20px; font-weight: 800; }
.topbar nav { display: flex; gap: 8px; }

.btn { display: inline-block; background: #0b5ed7; color: #fff; text-decoration: none; border: 0; font-weight: 700; padding: 10px 16px; border-radius: 8px; font-size: 15px; cursor: pointer; }
.btn.ghost { background: #fff; color: #0b5ed7; }
.btn.big { font-size: 17px; padding: 13px 22px; }
.btn.danger { background: #c0392b; }
.btn.small { padding: 7px 12px; font-size: 13px; }
.btn:disabled { opacity: .6; }

.wrap { max-width: 960px; margin: 0 auto; padding: 18px 14px 30px; }
.hero { text-align: center; padding: 34px 10px 26px; }
.hero h1 { font-size: 30px; line-height: 1.25; margin-bottom: 12px; }
.hero p { color: #47617a; max-width: 560px; margin: 0 auto 20px; font-size: 16px; line-height: 1.6; }

.features { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; margin: 14px 0 26px; }
.feature { background: #fff; border-radius: 12px; padding: 16px; box-shadow: 0 1px 4px rgba(16,50,79,.1); }
.feature .fic { font-size: 28px; margin-bottom: 8px; }
.feature h3 { font-size: 16px; margin-bottom: 6px; }
.feature p { font-size: 14px; color: #47617a; line-height: 1.55; }

.how { background: #fff; border-radius: 12px; padding: 20px; box-shadow: 0 1px 4px rgba(16,50,79,.1); text-align: center; }
.how h2 { font-size: 20px; margin-bottom: 12px; }
.how ol { text-align: left; max-width: 520px; margin: 0 auto 18px; padding-left: 22px; line-height: 1.7; color: #33475c; }

.foot { text-align: center; color: #7b8fa3; font-size: 12px; padding: 20px 10px 28px; }

/* ---- auth ---- */
.authbox { max-width: 430px; margin: 26px auto; background: #fff; border-radius: 14px; padding: 22px; box-shadow: 0 1px 6px rgba(16,50,79,.12); }
.tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.tabs button { flex: 1; padding: 11px; border-radius: 8px; border: 1px solid #c4d3e2; background: #eef4fb; font-size: 15px; font-weight: 700; cursor: pointer; }
.tabs button.active { background: #0b5ed7; color: #fff; border-color: #0b5ed7; }
label { display: block; font-size: 14px; font-weight: 600; margin: 12px 0 5px; }
input, textarea, select { width: 100%; padding: 11px; border: 1px solid #c4d3e2; border-radius: 8px; font-size: 16px; background: #fff; }
form .btn { width: 100%; margin-top: 18px; }
.status { margin-top: 12px; font-size: 14px; min-height: 20px; }
.status.err { color: #c0392b; }
.status.ok { color: #178a4c; }

/* ---- admin ---- */
.admin-wrap { max-width: 960px; margin: 0 auto; padding: 16px 14px 40px; }
.panel { background: #fff; border-radius: 12px; padding: 18px; margin-bottom: 16px; box-shadow: 0 1px 4px rgba(16,50,79,.1); }
.panel h2 { font-size: 18px; margin-bottom: 8px; }
.panel p.hint { color: #47617a; font-size: 14px; line-height: 1.6; margin-bottom: 8px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.row > div { flex: 1; min-width: 140px; }
.preview { width: 74px; height: 74px; border-radius: 50%; object-fit: cover; border: 2px solid #d7e3f0; background: #eef4fb; }
.preview.banner { width: 100%; height: 110px; border-radius: 10px; }
.shoppagelink { word-break: break-all; font-weight: 700; }
.prod-item, .msg-item { display: flex; gap: 12px; align-items: center; border-top: 1px solid #e3ecf5; padding: 12px 0; }
.prod-item img { width: 56px; height: 56px; object-fit: cover; border-radius: 8px; background: #eef4fb; flex: none; }
.prod-item .grow, .msg-item .grow { flex: 1; min-width: 0; }
.prod-item .pname { font-weight: 700; }
.prod-item .pmeta, .msg-item .mmeta { color: #5c7285; font-size: 13px; margin-top: 2px; }
.msg-item { align-items: flex-start; }
.msg-item .mtext { margin-top: 4px; white-space: pre-wrap; word-break: break-word; }
.empty-note { color: #5c7285; padding: 10px 0 2px; }
code { background: #eef4fb; padding: 1px 6px; border-radius: 5px; font-size: 13px; }
.status-chip { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 13px; font-weight: 700; }
.status-chip.pending { background: #fff3cd; color: #856404; }
.status-chip.active { background: #d4edda; color: #155724; }