/* ============================================================
   redpacket-split-calc · 抢红包随机金额分配计算
   新春红包风（rpc-）：正红 + 深红 + 鎏金 + 米金，红包封/红包雨/金珠装饰
   与宣纸卷轴 / 快递面单 / 冰晶等主题零重叠
   ============================================================ */
.rpc-page {
    --rpc-red: #d43a2f;
    --rpc-red-deep: #a3251d;
    --rpc-red-soft: rgba(212, 58, 47, 0.10);
    --rpc-gold: #e8b85a;
    --rpc-gold-deep: #b98a2e;
    --rpc-gold-soft: rgba(232, 184, 90, 0.16);
    --rpc-cream: #faf3e0;
    --rpc-card: #fffaf0;
    --rpc-card-2: #fdf5e2;
    --rpc-line: #ecd9ae;
    --rpc-line-strong: #d8bd84;
    --rpc-text: #3d2418;
    --rpc-muted: #9a7b5a;
    --rpc-ok: #3b7a4f;
    --rpc-shadow: 0 6px 20px rgba(140, 40, 24, 0.14);

    color: var(--rpc-text);
    font-size: 15px;
    line-height: 1.8;
}

[data-theme="dark"] .rpc-page {
    --rpc-red: #e05c50;
    --rpc-red-deep: #f08a80;
    --rpc-red-soft: rgba(224, 92, 80, 0.16);
    --rpc-gold: #f0cd82;
    --rpc-gold-deep: #d9ae5e;
    --rpc-gold-soft: rgba(240, 205, 130, 0.14);
    --rpc-cream: #241410;
    --rpc-card: #2b1813;
    --rpc-card-2: #35201a;
    --rpc-line: #4a2c22;
    --rpc-line-strong: #6b4132;
    --rpc-text: #f2ddc9;
    --rpc-muted: #b99678;
    --rpc-shadow: 0 6px 20px rgba(0, 0, 0, 0.45);
}

.rpc-page h1, .rpc-page h2, .rpc-page h3 { line-height: 1.4; }
.rpc-page b, .rpc-page strong { color: var(--rpc-red-deep); }

/* ---------- 首屏 ---------- */
.rpc-hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(230px, 0.8fr) minmax(230px, 0.75fr);
    gap: 22px 26px;
    align-items: center;
    padding: 30px 32px 26px;
    margin-bottom: 24px;
    border-radius: 18px;
    border: 1px solid var(--rpc-line-strong);
    background:
        radial-gradient(circle at 12% 8%, var(--rpc-gold-soft) 0, transparent 30%),
        radial-gradient(circle at 94% 90%, var(--rpc-red-soft) 0, transparent 36%),
        linear-gradient(165deg, var(--rpc-cream) 0%, var(--rpc-card) 100%);
    box-shadow: var(--rpc-shadow);
    overflow: hidden;
}
.rpc-hero::before {
    content: "";
    position: absolute;
    top: -40px; right: -40px;
    width: 150px; height: 150px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--rpc-gold-soft) 0%, transparent 70%);
    pointer-events: none;
}
.rpc-kicker {
    display: inline-block;
    padding: 5px 14px;
    margin-bottom: 12px;
    border-radius: 999px;
    background: var(--rpc-red);
    color: #fff;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.16em;
}
.rpc-hero h1 { margin: 0 0 10px; font-size: clamp(25px, 3.2vw, 36px); font-weight: 900; }
.rpc-hero-sub { margin: 0 0 14px; max-width: 56ch; color: var(--rpc-muted); font-size: 15px; }
.rpc-hero-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.rpc-hero-chips li {
    padding: 5px 13px;
    border-radius: 999px;
    border: 1px solid var(--rpc-line-strong);
    background: var(--rpc-card);
    color: var(--rpc-muted);
    font-size: 12px;
    font-weight: 700;
}

/* hero 红包封 */
.rpc-hero-envelope {
    position: relative;
    justify-self: center;
    width: min(200px, 100%);
    border-radius: 14px;
    background: linear-gradient(170deg, var(--rpc-red) 0%, var(--rpc-red-deep) 100%);
    box-shadow: 0 10px 24px rgba(163, 37, 29, 0.35);
    overflow: hidden;
}
.rpc-env-flap {
    height: 56px;
    background: linear-gradient(180deg, #e2503f 0%, var(--rpc-red) 100%);
    clip-path: ellipse(120% 130% at 50% -60%);
    border-bottom: 2px solid var(--rpc-gold);
}
.rpc-env-body {
    position: relative;
    padding: 10px 16px 20px;
    text-align: center;
    color: #fff;
}
.rpc-env-lucky {
    display: grid;
    place-items: center;
    width: 54px; height: 54px;
    margin: -6px auto 8px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, #f6d488 0%, var(--rpc-gold) 60%, var(--rpc-gold-deep) 100%);
    color: var(--rpc-red-deep);
    font-size: 26px;
    font-weight: 900;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}
.rpc-env-amt {
    display: block;
    font-size: 30px;
    font-weight: 900;
    color: var(--rpc-gold);
    font-variant-numeric: tabular-nums;
    text-shadow: 0 1px 0 rgba(0, 0, 0, 0.18);
}
.rpc-env-label { display: block; margin-top: 2px; font-size: 12px; opacity: 0.85; }

/* hero 读数 */
.rpc-hero-readout, .rpc-result-hero {
    padding: 18px 20px;
    border-radius: 14px;
    border: 1px solid var(--rpc-line-strong);
    background: var(--rpc-card);
    display: grid;
    gap: 4px;
    justify-items: start;
    box-shadow: var(--rpc-shadow);
}
.rpc-hero-readout { position: relative; z-index: 1; }
.rpc-readout-label, .rpc-rh-label {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.18em;
    color: var(--rpc-muted);
}
.rpc-readout-num, .rpc-rh-num {
    font-size: 26px;
    font-weight: 900;
    color: var(--rpc-red);
    font-variant-numeric: tabular-nums;
    line-height: 1.3;
}
.rpc-readout-avg { font-size: 13px; font-weight: 700; color: var(--rpc-gold-deep); }
.rpc-readout-meta { font-size: 12px; color: var(--rpc-muted); }
.rpc-readout-tip { margin-top: 6px; font-size: 12px; color: var(--rpc-muted); opacity: 0.85; }

/* ---------- 主体两栏 ---------- */
.rpc-calc {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 1fr);
    gap: 20px;
    align-items: start;
    margin-bottom: 28px;
}
.rpc-input-col { display: grid; gap: 16px; min-width: 0; }

.rpc-panel {
    padding: 20px 22px;
    border: 1px solid var(--rpc-line);
    border-radius: 14px;
    background: var(--rpc-card);
    box-shadow: var(--rpc-shadow);
}
.rpc-panel-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.rpc-panel-head h2 { margin: 0; font-size: 18px; font-weight: 800; }
.rpc-panel-head p { margin: 2px 0 0; font-size: 13px; color: var(--rpc-muted); }
.rpc-step {
    flex-shrink: 0;
    width: 38px; height: 38px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: linear-gradient(160deg, var(--rpc-red) 0%, var(--rpc-red-deep) 100%);
    color: var(--rpc-gold);
    font-size: 15px;
    font-weight: 900;
}

.rpc-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 14px; }
.rpc-field { display: grid; gap: 6px; }
.rpc-label { font-size: 13px; font-weight: 700; color: var(--rpc-text); }
.rpc-label-inline { align-self: center; margin-right: 10px; }
.rpc-input-wrap { position: relative; display: flex; align-items: center; }
.rpc-input-wrap-narrow { max-width: 200px; }
.rpc-input {
    width: 100%;
    height: 44px;
    padding: 0 44px 0 12px;
    border: 1.5px solid var(--rpc-line-strong);
    border-radius: 10px;
    background: var(--rpc-card-2);
    color: var(--rpc-text);
    font-size: 16px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.rpc-input:focus { border-color: var(--rpc-red); box-shadow: 0 0 0 3px var(--rpc-red-soft); }
.rpc-unit {
    position: absolute;
    right: 12px;
    font-style: normal;
    font-size: 12px;
    font-weight: 700;
    color: var(--rpc-muted);
    pointer-events: none;
}

.rpc-modes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}
.rpc-mode {
    height: 42px;
    border: 1.5px solid var(--rpc-line-strong);
    border-radius: 10px;
    background: var(--rpc-card-2);
    color: var(--rpc-muted);
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.14s;
}
.rpc-mode:hover { border-color: var(--rpc-red); color: var(--rpc-red-deep); }
.rpc-mode.is-active {
    border-color: var(--rpc-red);
    background: linear-gradient(160deg, var(--rpc-red) 0%, var(--rpc-red-deep) 100%);
    color: #fff;
    box-shadow: 0 4px 12px rgba(163, 37, 29, 0.3);
}

.rpc-field-fixed { flex-direction: row; align-items: center; margin-bottom: 12px; }
.rpc-select {
    height: 40px;
    padding: 0 12px;
    border: 1.5px solid var(--rpc-line-strong);
    border-radius: 10px;
    background: var(--rpc-card-2);
    color: var(--rpc-text);
    font-size: 14px;
    outline: none;
}

.rpc-error {
    margin-top: 10px;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid rgba(163, 37, 29, 0.45);
    background: var(--rpc-red-soft);
    color: var(--rpc-red-deep);
    font-size: 13px;
}
.rpc-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.rpc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 44px;
    padding: 0 20px;
    border: 1.5px solid var(--rpc-line-strong);
    border-radius: 10px;
    background: var(--rpc-card-2);
    color: var(--rpc-text);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.12s, box-shadow 0.12s;
}
.rpc-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 10px rgba(140, 40, 24, 0.16); }
.rpc-btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.rpc-btn--primary {
    border-color: var(--rpc-red-deep);
    background: linear-gradient(160deg, var(--rpc-red) 0%, var(--rpc-red-deep) 100%);
    color: #fff;
    box-shadow: 0 5px 14px rgba(163, 37, 29, 0.3);
}

.rpc-sim-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.rpc-sim-out { margin-top: 12px; }
.rpc-sim-tip { margin: 0; font-size: 13px; color: var(--rpc-muted); }
.rpc-sim-bars { display: grid; gap: 7px; }
.rpc-sim-bar-row { display: grid; grid-template-columns: 74px 1fr 58px; align-items: center; gap: 10px; }
.rpc-sim-bar-pos { font-size: 12.5px; font-weight: 700; color: var(--rpc-text); }
.rpc-sim-bar-track {
    height: 14px;
    border-radius: 999px;
    background: var(--rpc-card-2);
    border: 1px solid var(--rpc-line);
    overflow: hidden;
}
.rpc-sim-bar-fill {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--rpc-gold) 0%, var(--rpc-red) 100%);
    transition: width 0.4s ease;
}
.rpc-sim-bar-val { font-size: 12.5px; font-weight: 800; color: var(--rpc-red-deep); font-variant-numeric: tabular-nums; text-align: right; }

/* 结果列 */
.rpc-result-col { display: grid; gap: 14px; position: sticky; top: 16px; }
.rpc-rh-sub { font-size: 13px; font-weight: 700; color: var(--rpc-gold-deep); }

.rpc-kpis { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.rpc-kpi {
    padding: 12px 14px;
    border: 1px solid var(--rpc-line);
    border-radius: 12px;
    background: var(--rpc-card);
    display: grid;
    gap: 2px;
}
.rpc-kpi span { font-size: 12px; color: var(--rpc-muted); font-weight: 700; }
.rpc-kpi b { font-size: 22px; font-weight: 900; color: var(--rpc-red-deep); line-height: 1.2; font-variant-numeric: tabular-nums; }
.rpc-kpi small { font-size: 11px; color: var(--rpc-muted); }

.rpc-mini-card {
    padding: 16px 18px;
    border: 1px solid var(--rpc-line);
    border-radius: 12px;
    background: var(--rpc-card);
}
.rpc-mini-card h3 { margin: 0 0 10px; font-size: 15px; font-weight: 800; color: var(--rpc-red-deep); }
.rpc-result-foot { margin: 0; font-size: 12px; color: var(--rpc-muted); }

.rpc-bars { display: grid; gap: 6px; }
.rpc-bar-row { display: grid; grid-template-columns: 86px 1fr 34px; align-items: center; gap: 8px; }
.rpc-bar-label { font-size: 11.5px; color: var(--rpc-muted); font-variant-numeric: tabular-nums; }
.rpc-bar-track {
    height: 12px;
    border-radius: 999px;
    background: var(--rpc-card-2);
    border: 1px solid var(--rpc-line);
    overflow: hidden;
}
.rpc-bar-fill {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--rpc-gold) 0%, var(--rpc-red) 100%);
    min-width: 3px;
    transition: width 0.4s ease;
}
.rpc-bar-num { font-size: 11.5px; font-weight: 800; color: var(--rpc-text); text-align: right; font-variant-numeric: tabular-nums; }

.rpc-table { width: 100%; border-collapse: collapse; }
.rpc-table th, .rpc-table td {
    padding: 7px 8px;
    border-bottom: 1px solid var(--rpc-line);
    font-size: 13px;
    text-align: left;
}
.rpc-table th { color: var(--rpc-muted); font-size: 12px; font-weight: 800; }
.rpc-table td { font-variant-numeric: tabular-nums; }
.rpc-table tr:last-child td { border-bottom: none; }

/* ---------- 红包雨 ---------- */
.rpc-rain-wrap { margin-bottom: 28px; }
.rpc-section-head { margin: 0 0 14px; }
.rpc-section-kicker {
    display: inline-block;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.2em;
    color: var(--rpc-red-deep);
    opacity: 0.85;
}
.rpc-section-head h2 { margin: 4px 0 2px; font-size: 22px; font-weight: 900; }
.rpc-section-head p { margin: 0; font-size: 13px; color: var(--rpc-muted); }

.rpc-rain {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(118px, 1fr));
    gap: 12px;
    padding: 22px;
    border: 1px solid var(--rpc-line);
    border-radius: 14px;
    background:
        radial-gradient(circle at 8% 20%, var(--rpc-gold-soft) 0, transparent 22%),
        radial-gradient(circle at 92% 80%, var(--rpc-red-soft) 0, transparent 26%),
        var(--rpc-card);
}
.rpc-rain-empty { grid-column: 1 / -1; margin: 0; text-align: center; font-size: 13.5px; color: var(--rpc-muted); padding: 30px 0; }
.rpc-lucky {
    position: relative;
    padding: 14px 10px 12px;
    border-radius: 10px;
    background: linear-gradient(170deg, var(--rpc-red) 0%, var(--rpc-red-deep) 100%);
    color: #fff;
    text-align: center;
    box-shadow: 0 5px 12px rgba(163, 37, 29, 0.26);
    animation: rpc-drop 0.5s ease backwards;
}
.rpc-lucky::before {
    content: "";
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 22px;
    background: rgba(232, 184, 90, 0.35);
    clip-path: ellipse(130% 160% at 50% -80%);
}
.rpc-lucky .rpc-pos { display: block; font-size: 11.5px; opacity: 0.85; }
.rpc-lucky .rpc-amt {
    display: block;
    margin: 3px 0 1px;
    font-size: 21px;
    font-weight: 900;
    color: var(--rpc-gold);
    font-variant-numeric: tabular-nums;
}
.rpc-lucky .rpc-share { display: block; font-size: 11px; opacity: 0.78; }
.rpc-lucky.is-best {
    outline: 2px solid var(--rpc-gold);
    outline-offset: 2px;
    transform: scale(1.04);
}
.rpc-lucky.is-best::after {
    content: "🥇 手气最佳";
    position: absolute;
    top: -10px; right: -6px;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--rpc-gold);
    color: var(--rpc-red-deep);
    font-size: 10.5px;
    font-weight: 900;
    white-space: nowrap;
}
@keyframes rpc-drop {
    from { opacity: 0; transform: translateY(-14px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------- 祝福语 ---------- */
.rpc-wishes { margin-bottom: 28px; }
.rpc-wish-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.rpc-wish-card {
    padding: 16px 18px;
    border: 1px solid var(--rpc-line);
    border-radius: 12px;
    background: var(--rpc-card);
}
.rpc-wish-card b { display: block; margin-bottom: 6px; font-size: 14px; color: var(--rpc-red-deep); }
.rpc-wish-card p { margin: 0; font-size: 13px; color: var(--rpc-muted); line-height: 1.8; }

/* ---------- FAQ ---------- */
.rpc-faq { margin-bottom: 28px; }
.rpc-faq .faq-item { border-color: var(--rpc-line); background: var(--rpc-card); }
.rpc-faq .faq-item summary { color: var(--rpc-text); }
.rpc-faq .faq-a { color: var(--rpc-muted); }
.rpc-comments { margin-bottom: 28px; }

/* ---------- 返回顶部 ---------- */
.rpc-top {
    position: fixed;
    right: 22px;
    bottom: 26px;
    width: 44px; height: 44px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(160deg, var(--rpc-red) 0%, var(--rpc-red-deep) 100%);
    color: var(--rpc-gold);
    font-size: 18px;
    font-weight: 900;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.2s, transform 0.2s;
    box-shadow: 0 6px 16px rgba(163, 37, 29, 0.3);
    z-index: 60;
}
.rpc-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .rpc-hero { grid-template-columns: 1fr 1fr; }
    .rpc-hero-readout { grid-column: 1 / -1; }
    .rpc-calc { grid-template-columns: 1fr; }
    .rpc-result-col { position: static; }
    .rpc-wish-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
    .rpc-hero { grid-template-columns: 1fr; padding: 22px 18px; }
    .rpc-grid2 { grid-template-columns: 1fr; }
    .rpc-modes { grid-template-columns: 1fr; }
    .rpc-wish-grid { grid-template-columns: 1fr; }
    .rpc-actions .rpc-btn { flex: 1 1 46%; }
    .rpc-rain { grid-template-columns: repeat(2, 1fr); padding: 14px; }
}