/* =========================================================
   credit-card-free-period · 信用卡免息期计算器
   设计语言：铂金紫（深紫 #3D2B7D / 铂银 #8E97A8 / 冷白 #F5F4FA）
   ========================================================= */
.ccf-page {
    --ccf-ink: #241D45;
    --ccf-ink-2: #4C4870;
    --ccf-ink-3: #7C7898;
    --ccf-purple: #3D2B7D;
    --ccf-purple-deep: #291C58;
    --ccf-violet: #6C5CE7;
    --ccf-silver: #8E97A8;
    --ccf-red: #C0392B;
    --ccf-green: #2E7D4F;
    --ccf-bg: #F5F4FA;
    --ccf-surface: #FFFFFF;
    --ccf-surface-2: #FAF9FE;
    --ccf-surface-3: #EEECF8;
    --ccf-line: #DEDBEE;
    --ccf-shadow: 0 10px 30px rgba(61, 43, 125, .1);
    --ccf-radius: 16px;

    margin: 0 auto 64px;
    max-width: 1200px;
    padding: 8px 4px 0;
    color: var(--ccf-ink);
    line-height: 1.65;
}
:root[data-theme="dark"] .ccf-page {
    --ccf-ink: #E9E8F5;
    --ccf-ink-2: #ABA8CB;
    --ccf-ink-3: #7E7AA0;
    --ccf-purple: #4B3A94;
    --ccf-purple-deep: #2C2058;
    --ccf-violet: #8577F0;
    --ccf-silver: #8E97A8;
    --ccf-red: #E5715F;
    --ccf-green: #4CAF7D;
    --ccf-bg: #12101F;
    --ccf-surface: #1B1830;
    --ccf-surface-2: #211D3A;
    --ccf-surface-3: #292445;
    --ccf-line: #342E58;
    --ccf-shadow: 0 12px 34px rgba(0, 0, 0, .4);
}

/* ---------- 首屏 ---------- */
.ccf-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
    gap: 26px;
    align-items: stretch;
    background:
        radial-gradient(900px 400px at -8% 130%, rgba(108, 92, 231, .35), transparent 60%),
        linear-gradient(135deg, var(--ccf-purple) 0%, var(--ccf-purple-deep) 100%);
    border-radius: 22px;
    padding: 34px 38px 30px;
    color: #EFEDF9;
    box-shadow: var(--ccf-shadow);
    position: relative;
    overflow: hidden;
}
.ccf-hero::before {
    content: '';
    position: absolute;
    right: -40px;
    top: -40px;
    width: 220px;
    height: 140px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .03));
    transform: rotate(12deg);
    border: 1px solid rgba(255, 255, 255, .2);
}
.ccf-hero-copy { position: relative; z-index: 1; }
.ccf-kicker {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 999px;
    background: rgba(108, 92, 231, .2);
    border: 1px solid rgba(108, 92, 231, .55);
    font-size: 12.5px;
    letter-spacing: .1em;
    color: #C9C0FF;
}
.ccf-hero h1 { margin: 14px 0 10px; font-size: clamp(26px, 3.4vw, 38px); line-height: 1.25; }
.ccf-hero-sub { margin: 0 0 16px; max-width: 620px; font-size: 15.5px; line-height: 1.8; color: rgba(239, 237, 249, .85); }
.ccf-hero-chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; }
.ccf-hero-chips li {
    padding: 6px 13px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .09);
    border: 1px solid rgba(255, 255, 255, .15);
    font-size: 12.5px;
}
.ccf-hero-readout {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    background: rgba(108, 92, 231, .14);
    border: 1px solid rgba(108, 92, 231, .5);
    border-radius: var(--ccf-radius);
    padding: 22px 24px;
}
.ccf-readout-label { font-size: 12.5px; letter-spacing: .08em; color: #C9C0FF; }
.ccf-readout-num { font-size: clamp(34px, 4vw, 46px); font-weight: 800; color: #D6CFFF; font-variant-numeric: tabular-nums; line-height: 1.1; }
.ccf-readout-sub { font-size: 13.5px; color: rgba(239, 237, 249, .88); }
.ccf-readout-meta { font-size: 12.5px; color: rgba(239, 237, 249, .6); }
.ccf-readout-tip {
    margin-top: 8px;
    padding-top: 10px;
    border-top: 1px dashed rgba(255, 255, 255, .2);
    font-size: 11.5px;
    color: rgba(239, 237, 249, .55);
}

/* ---------- 主区 ---------- */
.ccf-main {
    display: grid;
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: 22px;
    margin-top: 22px;
    align-items: start;
}
.ccf-panel {
    background: var(--ccf-surface);
    border: 1px solid var(--ccf-line);
    border-radius: var(--ccf-radius);
    padding: 20px 22px;
    box-shadow: var(--ccf-shadow);
}
.ccf-panel + .ccf-panel { margin-top: 16px; }
.ccf-panel-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.ccf-step {
    flex: none;
    width: 26px;
    height: 26px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    background: var(--ccf-purple);
    color: #D6CFFF;
    font-size: 12px;
    font-weight: 700;
}
.ccf-panel-head h2 { margin: 0; font-size: 16.5px; }
.ccf-panel-sub { font-size: 12px; font-weight: 400; color: var(--ccf-ink-3); }

.ccf-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.ccf-field label { display: block; font-size: 13px; font-weight: 600; color: var(--ccf-ink-2); margin-bottom: 6px; }
.ccf-field select, .ccf-field input {
    width: 100%;
    padding: 10px 12px;
    border: 1.5px solid var(--ccf-line);
    border-radius: 10px;
    background: var(--ccf-surface);
    color: var(--ccf-ink);
    font-size: 14px;
    outline: none;
    transition: border-color .15s;
}
.ccf-field select:focus, .ccf-field input:focus { border-color: var(--ccf-violet); }
.ccf-hint { margin: 6px 0 0; font-size: 12px; color: var(--ccf-ink-3); }

.ccf-entry { padding: 12px; border: 1px dashed var(--ccf-line); border-radius: 12px; background: var(--ccf-surface-2); }
.ccf-entry-grid { display: grid; grid-template-columns: 1.2fr 1fr auto; gap: 8px; }
.ccf-entry-grid input {
    padding: 8px 9px;
    border: 1.5px solid var(--ccf-line);
    border-radius: 9px;
    background: var(--ccf-surface);
    color: var(--ccf-ink);
    font-size: 13px;
    outline: none;
    min-width: 0;
}
.ccf-entry-grid input:focus { border-color: var(--ccf-violet); }
.ccf-add {
    padding: 8px 14px;
    border: none;
    border-radius: 9px;
    background: var(--ccf-violet);
    color: #FFF;
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    transition: filter .15s, transform .12s;
}
.ccf-add:hover { filter: brightness(1.08); transform: translateY(-1px); }

.ccf-rows-wrap { margin-top: 14px; overflow-x: auto; border: 1px solid var(--ccf-line); border-radius: 10px; }
.ccf-rows { width: 100%; border-collapse: collapse; font-size: 12.5px; min-width: 540px; }
.ccf-rows th { padding: 8px 10px; background: var(--ccf-surface-3); color: var(--ccf-ink-2); text-align: left; white-space: nowrap; }
.ccf-rows td { padding: 8px 10px; border-top: 1px solid var(--ccf-line); white-space: nowrap; color: var(--ccf-ink); }
.ccf-rows td b { color: var(--ccf-violet); font-variant-numeric: tabular-nums; }
.ccf-empty td { text-align: center; color: var(--ccf-ink-3); padding: 18px; }
.ccf-del { border: none; background: none; color: var(--ccf-ink-3); cursor: pointer; font-size: 14px; padding: 2px 6px; border-radius: 6px; }
.ccf-del:hover { color: var(--ccf-red); background: rgba(192, 57, 43, .08); }
.ccf-rows tr.ccf-row-best td { background: rgba(108, 92, 231, .07); }

.ccf-actions { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.ccf-btn {
    flex: 1;
    min-width: 100px;
    padding: 11px 10px;
    border: 1.5px solid var(--ccf-line);
    border-radius: 12px;
    background: var(--ccf-surface);
    color: var(--ccf-ink);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform .12s, border-color .15s;
}
.ccf-btn:hover { transform: translateY(-1px); border-color: var(--ccf-violet); }
.ccf-btn--primary { border: none; background: linear-gradient(135deg, var(--ccf-violet), var(--ccf-purple)); color: #FFF; }

/* ---------- 时间线 ---------- */
.ccf-timeline {
    background: linear-gradient(160deg, var(--ccf-surface) 0%, var(--ccf-surface-2) 100%);
    border: 1.5px solid var(--ccf-violet);
    border-radius: var(--ccf-radius);
    padding: 20px 22px;
    box-shadow: var(--ccf-shadow);
}
.ccf-timeline h2 { margin: 0 0 14px; font-size: 17px; }
.ccf-bar {
    height: 14px;
    border-radius: 999px;
    background: var(--ccf-surface-3);
    overflow: hidden;
    display: flex;
}
.ccf-bar-seg {
    height: 100%;
    background: linear-gradient(90deg, var(--ccf-violet), var(--ccf-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    transition: width .5s cubic-bezier(.2, .8, .3, 1);
}
.ccf-bar-seg span { font-size: 10.5px; color: #FFF; white-space: nowrap; overflow: hidden; }
.ccf-bar-marks {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 11.5px;
    color: var(--ccf-ink-3);
}
.ccf-due { margin-top: 16px; padding: 14px 16px; border-radius: 12px; background: var(--ccf-surface-3); }
.ccf-due-label { font-size: 12.5px; color: var(--ccf-ink-2); margin-right: 10px; }
.ccf-due b { font-size: 21px; color: var(--ccf-purple); font-variant-numeric: tabular-nums; }
:root[data-theme="dark"] .ccf-due b { color: var(--ccf-violet); }
.ccf-due-sub { display: block; margin-top: 4px; font-size: 12.5px; color: var(--ccf-ink-3); }
.ccf-best {
    margin-top: 14px;
    padding: 13px 16px;
    border-radius: 12px;
    border: 1px dashed var(--ccf-violet);
    background: rgba(108, 92, 231, .06);
}
.ccf-best b { font-size: 13.5px; color: var(--ccf-ink); margin-right: 10px; }
.ccf-best span { font-size: 15px; font-weight: 700; color: var(--ccf-violet); }
.ccf-best p { margin: 6px 0 0; font-size: 12.5px; line-height: 1.75; color: var(--ccf-ink-2); }
.ccf-error {
    margin: 12px 0 0;
    padding: 9px 13px;
    border-radius: 10px;
    background: rgba(192, 57, 43, .08);
    border: 1px solid rgba(192, 57, 43, .35);
    color: var(--ccf-red);
    font-size: 13px;
}

/* ---------- 对比 ---------- */
.ccf-compare {
    margin-top: 16px;
    background: var(--ccf-surface);
    border: 1px solid var(--ccf-line);
    border-radius: var(--ccf-radius);
    padding: 18px 20px;
    box-shadow: var(--ccf-shadow);
}
.ccf-compare h2 { margin: 0 0 12px; font-size: 16.5px; }
.ccf-compare-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.ccf-compare-card { border-radius: 12px; padding: 14px 16px; border: 1px solid var(--ccf-line); }
.ccf-compare-card--inst { background: rgba(108, 92, 231, .06); border-color: rgba(108, 92, 231, .35); }
.ccf-compare-card--min { background: rgba(192, 57, 43, .05); border-color: rgba(192, 57, 43, .3); }
.ccf-compare-card h3 { margin: 0 0 8px; font-size: 14px; }
.ccf-c-line { margin: 4px 0; font-size: 12.5px; color: var(--ccf-ink-2); display: flex; justify-content: space-between; gap: 8px; }
.ccf-c-line b { color: var(--ccf-ink); font-variant-numeric: tabular-nums; }
.ccf-c-line--hi b { color: var(--ccf-violet); font-size: 14px; }
.ccf-compare-card--min .ccf-c-line--hi b { color: var(--ccf-red); }
.ccf-c-note { margin: 8px 0 0; font-size: 11.5px; line-height: 1.7; color: var(--ccf-ink-3); }
.ccf-verdict {
    margin: 14px 0 0;
    padding: 11px 15px;
    border-radius: 10px;
    background: var(--ccf-surface-3);
    font-size: 13px;
    line-height: 1.75;
    color: var(--ccf-ink-2);
}

/* ---------- 说明 ---------- */
.ccf-guide { margin-top: 26px; }
.ccf-guide h2 { margin-bottom: 14px; font-size: 19px; }
.ccf-guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.ccf-guide-card { background: var(--ccf-surface-2); border: 1px solid var(--ccf-line); border-radius: var(--ccf-radius); padding: 16px 19px; }
.ccf-guide-card h3 { margin: 0 0 7px; font-size: 14.5px; }
.ccf-guide-card p { margin: 0; font-size: 13px; line-height: 1.85; color: var(--ccf-ink-2); }

/* ---------- 打印 ---------- */
.ccf-print-area { display: none; }
@media print {
    body * { visibility: hidden; }
    .ccf-print-area, .ccf-print-area * { visibility: visible; }
    .ccf-print-area { display: block; position: absolute; inset: 0; padding: 30px; color: #000; }
    .ccf-print-area h1 { font-size: 22px; border-bottom: 2px solid #333; padding-bottom: 8px; }
    .ccf-print-area table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: 13px; }
    .ccf-print-area th, .ccf-print-area td { border: 1px solid #999; padding: 7px 10px; text-align: left; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .ccf-hero { grid-template-columns: minmax(0, 1fr); }
    .ccf-main { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
    .ccf-hero { padding: 24px 20px; }
    .ccf-grid { grid-template-columns: minmax(0, 1fr); }
    .ccf-compare-grid { grid-template-columns: minmax(0, 1fr); }
    .ccf-guide-grid { grid-template-columns: minmax(0, 1fr); }
    .ccf-panel, .ccf-timeline, .ccf-compare { padding: 16px; }
}