/* ======================================================================
 *  tool-station.css · 工具站 2.0 共享设计系统（基座层）
 * ----------------------------------------------------------------------
 *  这一层只提供「所有工具页共用的骨架」：
 *    · 字体层级（kicker / h1 / lead / h2 / h3 / body / meta）
 *    · 页面容器与栅格
 *    · 面包屑条（.tsk-crumb）
 *    · 卡片 / 面板 / 表单 / 按钮 / 标签 等基础件
 *    · 提示条（toast）与结果弹窗（modal）
 *    · 深浅色双主题（跟随站点导航栏的主题开关，默认跟随系统）
 *
 *  每个工具另有自己的样式文件（public/css/tools/<slug>.css），
 *  在 .tsk-<slug> 作用域内覆盖配色变量并定义专属布局，
 *  因此每个工具的视觉与交互都是独立设计的，而不是同一套模板换色。
 * ====================================================================== */

.tsk {
    /* ---------- 中性色板（可被各工具 CSS 覆盖） ---------- */
    --tsk-bg: #f4f7fc;
    --tsk-bg-2: #eaf0fb;
    --tsk-card: #ffffff;
    --tsk-card-2: #f7f9fd;
    --tsk-ink: #16203a;
    --tsk-sub: #566180;
    --tsk-faint: #8b96ad;
    --tsk-line: #e3e8f2;
    --tsk-line-2: #eef2f9;
    --tsk-brand: #4c6ef5;
    --tsk-brand-2: #7048e8;
    --tsk-brand-soft: #eaeeff;
    --tsk-brand-ink: #3b5bdb;
    --tsk-accent: #f76707;
    --tsk-ok: #2f9e44;
    --tsk-ok-soft: #e6f6ec;
    --tsk-warn: #e8890c;
    --tsk-warn-soft: #fdf3e0;
    --tsk-bad: #e03131;
    --tsk-bad-soft: #fdecec;
    --tsk-info: #1098ad;
    --tsk-info-soft: #e3f6f9;

    --tsk-shadow-sm: 0 1px 2px rgba(22, 32, 58, .05), 0 6px 16px rgba(22, 32, 58, .05);
    --tsk-shadow: 0 2px 6px rgba(22, 32, 58, .07), 0 18px 44px rgba(22, 32, 58, .09);
    --tsk-shadow-lg: 0 6px 16px rgba(22, 32, 58, .09), 0 32px 72px rgba(22, 32, 58, .16);
    --tsk-r: 18px;
    --tsk-r-sm: 11px;
    --tsk-r-pill: 999px;

    --tsk-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC",
        "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
    --tsk-num: "Bahnschrift", "Segoe UI Variable Text", ui-monospace, SFMono-Regular,
        Menlo, Consolas, monospace;

    color: var(--tsk-ink);
    font-family: var(--tsk-font);
    font-size: 15.5px;
    line-height: 1.85;
    background: var(--tsk-bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: clip;
}

:root[data-theme="dark"] .tsk {
    --tsk-bg: #0d1119;
    --tsk-bg-2: #121826;
    --tsk-card: #161c29;
    --tsk-card-2: #1c2434;
    --tsk-ink: #e9edf7;
    --tsk-sub: #a3adc2;
    --tsk-faint: #7b8699;
    --tsk-line: #253046;
    --tsk-line-2: #1e2738;
    --tsk-brand: #748ffc;
    --tsk-brand-2: #9775fa;
    --tsk-brand-soft: rgba(116, 143, 252, .15);
    --tsk-brand-ink: #91a7ff;
    --tsk-accent: #ffa94d;
    --tsk-ok: #51cf66;
    --tsk-ok-soft: rgba(81, 207, 102, .14);
    --tsk-warn: #ffd43b;
    --tsk-warn-soft: rgba(255, 212, 59, .14);
    --tsk-bad: #ff8787;
    --tsk-bad-soft: rgba(255, 135, 135, .14);
    --tsk-info: #3bc9db;
    --tsk-info-soft: rgba(59, 201, 219, .14);

    --tsk-shadow-sm: 0 1px 2px rgba(0, 0, 0, .5), 0 6px 16px rgba(0, 0, 0, .3);
    --tsk-shadow: 0 2px 6px rgba(0, 0, 0, .55), 0 18px 44px rgba(0, 0, 0, .38);
    --tsk-shadow-lg: 0 6px 16px rgba(0, 0, 0, .6), 0 32px 72px rgba(0, 0, 0, .5);
}

.tsk * { box-sizing: border-box; }
.tsk p { margin: 0; }
.tsk b, .tsk strong { font-weight: 700; color: var(--tsk-ink); }
.tsk img { max-width: 100%; height: auto; }

/* ---------- 1. 页面容器与栅格 ---------- */
.tsk-wrap {
    max-width: 1360px;
    margin: 0 auto;
    padding: 0 28px 72px;
}
.tsk-row {
    display: grid;
    gap: 18px;
}
.tsk-row-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.tsk-row-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.tsk-row-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 2. 字体层级 ---------- */
.tsk-kicker {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font: 700 11.5px/1 var(--tsk-num);
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--tsk-brand-ink);
    background: var(--tsk-brand-soft);
    border-radius: var(--tsk-r-pill);
    padding: 8px 16px;
}
.tsk-kicker i {
    width: 20px;
    height: 7px;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--tsk-brand), var(--tsk-brand-2));
}
.tsk-h1 {
    margin: 14px 0 0;
    font-size: clamp(27px, 3.9vw, 40px);
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: -.015em;
}
.tsk-h1 em {
    font-style: normal;
    color: var(--tsk-brand-ink);
}
.tsk-lead {
    margin-top: 12px;
    font-size: 16px;
    line-height: 1.9;
    color: var(--tsk-sub);
    max-width: 680px;
}
.tsk-lead b { color: var(--tsk-brand-ink); }
.tsk-h2 {
    margin: 0;
    font-size: 21px;
    font-weight: 800;
    letter-spacing: -.01em;
    line-height: 1.35;
}
.tsk-h3 {
    margin: 0;
    font-size: 16.5px;
    font-weight: 750;
    line-height: 1.45;
}
.tsk-meta {
    font-size: 12.5px;
    color: var(--tsk-faint);
    line-height: 1.7;
}
.tsk-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}
.tsk-chips span {
    background: var(--tsk-card);
    border: 1px solid var(--tsk-line);
    border-radius: var(--tsk-r-pill);
    padding: 6px 14px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--tsk-sub);
}

/* ---------- 3. 面包屑条 ---------- */
.tsk-crumb-bar {
    width: 100%;
    background: color-mix(in srgb, var(--tsk-card) 88%, transparent);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--tsk-line);
}
.tsk-crumb-bar-in {
    max-width: 1360px;
    margin: 0 auto;
    padding: 10px 28px;
}
.tsk-crumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin: 0;
    font-size: 13px;
    color: var(--tsk-faint);
}
.tsk-crumb a {
    color: var(--tsk-sub);
    text-decoration: none;
    transition: color .15s;
}
.tsk-crumb a:hover { color: var(--tsk-brand-ink); }
.tsk-crumb-sep { color: var(--tsk-line); }
.tsk-crumb-cur { color: var(--tsk-ink); font-weight: 700; }

/* ---------- 4. 卡片 / 面板 ---------- */
.tsk-card {
    background: var(--tsk-card);
    border: 1px solid var(--tsk-line);
    border-radius: var(--tsk-r);
    box-shadow: var(--tsk-shadow-sm);
}
.tsk-panel {
    background: var(--tsk-card);
    border: 1px solid var(--tsk-line);
    border-radius: var(--tsk-r);
    box-shadow: var(--tsk-shadow);
    padding: 22px 24px;
}
.tsk-panel-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}
.tsk-sec {
    margin-top: 30px;
}
.tsk-sec-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.tsk-sec-title::before {
    content: "";
    width: 4px;
    height: 19px;
    border-radius: 99px;
    background: linear-gradient(180deg, var(--tsk-brand), var(--tsk-brand-2));
}

/* ---------- 5. 表单件 ---------- */
.tsk-field { display: block; }
.tsk-label {
    display: block;
    margin-bottom: 7px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--tsk-sub);
    letter-spacing: .01em;
}
.tsk-input,
.tsk-textarea,
.tsk-select {
    width: 100%;
    border: 1.5px solid var(--tsk-line);
    border-radius: var(--tsk-r-sm);
    background: var(--tsk-card-2);
    color: var(--tsk-ink);
    font: 500 15px/1.7 var(--tsk-font);
    padding: 10px 13px;
    outline: none;
    transition: border-color .15s, box-shadow .15s, background .15s;
}
.tsk-textarea { min-height: 92px; resize: vertical; line-height: 1.8; }
.tsk-input:focus,
.tsk-textarea:focus,
.tsk-select:focus {
    border-color: var(--tsk-brand);
    background: var(--tsk-card);
    box-shadow: 0 0 0 3px var(--tsk-brand-soft);
}
.tsk-input::placeholder,
.tsk-textarea::placeholder { color: var(--tsk-faint); }
.tsk-hint {
    margin-top: 6px;
    font-size: 12px;
    color: var(--tsk-faint);
    line-height: 1.65;
}
.tsk-err {
    margin-top: 6px;
    font-size: 12.5px;
    color: var(--tsk-bad);
    font-weight: 600;
    display: none;
}
.tsk-err.show { display: block; }
.tsk-field.bad .tsk-input,
.tsk-field.bad .tsk-textarea,
.tsk-field.bad .tsk-select { border-color: var(--tsk-bad); }

/* 分段选择器 */
.tsk-seg {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}
.tsk-seg button {
    border: 1.5px solid var(--tsk-line);
    border-radius: var(--tsk-r-pill);
    background: var(--tsk-card-2);
    color: var(--tsk-sub);
    font: 700 13px/1.4 var(--tsk-font);
    padding: 9px 16px;
    cursor: pointer;
    transition: .15s;
}
.tsk-seg button:hover { border-color: var(--tsk-brand); color: var(--tsk-brand-ink); }
.tsk-seg button.on {
    background: var(--tsk-brand);
    border-color: var(--tsk-brand);
    color: #fff;
    box-shadow: 0 6px 14px rgba(76, 110, 245, .26);
}
:root[data-theme="dark"] .tsk-seg button.on { color: #0d1119; }

/* ---------- 6. 按钮 ---------- */
.tsk-acts {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    align-items: center;
}
.tsk-btn {
    border: 1.5px solid var(--tsk-line);
    background: var(--tsk-card-2);
    color: var(--tsk-sub);
    border-radius: var(--tsk-r-pill);
    padding: 10px 20px;
    font: 700 13.5px/1.4 var(--tsk-font);
    cursor: pointer;
    transition: .15s;
    white-space: nowrap;
}
.tsk-btn:hover {
    border-color: var(--tsk-brand);
    color: var(--tsk-brand-ink);
}
.tsk-btn:focus-visible {
    outline: 3px solid var(--tsk-brand-soft);
    outline-offset: 2px;
}
.tsk-btn-main {
    background: linear-gradient(135deg, var(--tsk-brand), var(--tsk-brand-2));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 8px 18px rgba(76, 110, 245, .28);
}
.tsk-btn-main:hover { filter: brightness(1.06); color: #fff; }
:root[data-theme="dark"] .tsk-btn-main { color: #0d1119; }
:root[data-theme="dark"] .tsk-btn-main:hover { color: #0d1119; }
.tsk-btn-danger { border-color: var(--tsk-bad); color: var(--tsk-bad); background: var(--tsk-bad-soft); }
.tsk-btn-sm { padding: 6px 13px; font-size: 12.5px; }
.tsk-btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 7. 提示条 ---------- */
.tsk-alert {
    margin-top: 14px;
    font-size: 13px;
    line-height: 1.75;
    border-radius: var(--tsk-r-sm);
    padding: 10px 14px;
    display: none;
}
.tsk-alert.show { display: block; }
.tsk-alert-ok { background: var(--tsk-ok-soft); color: var(--tsk-ok); }
.tsk-alert-warn { background: var(--tsk-warn-soft); color: var(--tsk-warn); }
.tsk-alert-bad { background: var(--tsk-bad-soft); color: var(--tsk-bad); }
.tsk-alert-info { background: var(--tsk-info-soft); color: var(--tsk-info); }

/* ---------- 8. Toast ---------- */
.tsk-toast {
    position: fixed;
    left: 50%;
    bottom: 34px;
    transform: translate(-50%, 18px);
    background: var(--tsk-ink);
    color: var(--tsk-bg);
    padding: 11px 22px;
    border-radius: var(--tsk-r-pill);
    font-size: 13.5px;
    font-weight: 700;
    opacity: 0;
    pointer-events: none;
    transition: .25s;
    z-index: 99999;
    box-shadow: var(--tsk-shadow);
    max-width: 88vw;
    text-align: center;
}
.tsk-toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 9. 结果弹窗（仅在用户完成操作后触发） ---------- */
.tsk-modal {
    position: fixed;
    inset: 0;
    z-index: 100000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.tsk-modal[hidden] { display: none; }
.tsk-modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(12, 17, 28, .56);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
}
.tsk-modal-box {
    position: relative;
    width: min(720px, 100%);
    max-height: 86vh;
    overflow: auto;
    background: var(--tsk-card);
    border: 1px solid var(--tsk-line);
    border-radius: var(--tsk-r);
    box-shadow: var(--tsk-shadow-lg);
    padding: 24px 26px 20px;
    animation: tskPop .22s cubic-bezier(.22, .68, .36, 1);
}
@keyframes tskPop {
    from { opacity: 0; transform: translateY(14px) scale(.985); }
    to { opacity: 1; transform: none; }
}
.tsk-modal-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 12px;
}
.tsk-modal-x {
    border: 0;
    background: var(--tsk-card-2);
    color: var(--tsk-faint);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    font-size: 19px;
    line-height: 1;
    cursor: pointer;
    flex: none;
}
.tsk-modal-x:hover { color: var(--tsk-bad); }
.tsk-modal-body { font-size: 14.5px; line-height: 1.9; color: var(--tsk-sub); }
.tsk-modal-body b { color: var(--tsk-ink); }
.tsk-modal-foot {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--tsk-line-2);
    display: flex;
    justify-content: flex-end;
    gap: 9px;
}

/* ---------- 10. 说明块 / FAQ / 表格 ---------- */
.tsk-notes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
    gap: 14px;
}
.tsk-note {
    background: var(--tsk-card);
    border: 1px solid var(--tsk-line);
    border-left: 3px solid var(--tsk-brand);
    border-radius: var(--tsk-r-sm);
    padding: 16px 18px;
    box-shadow: var(--tsk-shadow-sm);
}
.tsk-note h3 {
    margin: 0 0 6px;
    font-size: 14.5px;
    font-weight: 750;
    color: var(--tsk-brand-ink);
}
.tsk-note p { font-size: 13.5px; line-height: 1.9; color: var(--tsk-sub); }

.tsk-faq { margin-top: 18px; }
.tsk-faq details {
    background: var(--tsk-card);
    border: 1px solid var(--tsk-line);
    border-radius: var(--tsk-r-sm);
    margin-bottom: 8px;
    overflow: hidden;
    box-shadow: var(--tsk-shadow-sm);
}
.tsk-faq summary {
    cursor: pointer;
    padding: 14px 18px;
    font-weight: 700;
    font-size: 14.5px;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}
.tsk-faq summary::-webkit-details-marker { display: none; }
.tsk-faq summary::after {
    content: "+";
    font: 800 15px/1 var(--tsk-num);
    color: var(--tsk-faint);
    transition: .2s;
}
.tsk-faq details[open] summary::after { transform: rotate(45deg); color: var(--tsk-brand-ink); }
.tsk-faq .a {
    padding: 0 18px 14px;
    font-size: 13.5px;
    line-height: 1.9;
    color: var(--tsk-sub);
}

.tsk-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}
.tsk-table th,
.tsk-table td {
    border-bottom: 1px solid var(--tsk-line-2);
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
}
.tsk-table th {
    font-weight: 750;
    color: var(--tsk-ink);
    background: var(--tsk-card-2);
    white-space: nowrap;
}
.tsk-table td { color: var(--tsk-sub); }
.tsk-table tr:last-child td { border-bottom: 0; }

.tsk-empty {
    padding: 26px 16px;
    text-align: center;
    color: var(--tsk-faint);
    font-size: 13.5px;
}
.tsk-foot {
    margin-top: 26px;
    font-size: 12.5px;
    color: var(--tsk-faint);
    text-align: center;
    line-height: 1.9;
}
.tsk-sr {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

/* ---------- 11. 响应式 ---------- */
@media (max-width: 1024px) {
    .tsk-row-3, .tsk-row-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
    .tsk-wrap { padding: 0 16px 56px; }
    .tsk-crumb-bar-in { padding: 9px 16px; }
    .tsk-row-2, .tsk-row-3, .tsk-row-4 { grid-template-columns: 1fr; }
    .tsk-panel { padding: 17px 15px; }
}
@media (max-width: 560px) {
    .tsk-lead { font-size: 15px; }
    .tsk-modal-box { padding: 20px 17px 16px; }
}