/* ============================================================
   teacher-cert-recognize · 教师资格认定指南
   黑板证书风（tc-）：黑板墨绿底 + 粉笔白字微粉质感 + 证书金框双线
   + 四角角花(clip-path) + 红色印章；深色模式重定义全部变量
   ============================================================ */
.tc-page {
    --tc-bg: #2e4a3c;            /* 黑板墨绿 */
    --tc-bg-deep: #223a2e;
    --tc-panel: #f8f3e3;         /* 证书纸面 */
    --tc-panel-2: #efe7d2;
    --tc-ink: #f4f2e6;           /* 粉笔白字 */
    --tc-sub: rgba(244, 242, 230, 0.74);
    --tc-ink-2: #3b3524;         /* 纸面深色字 */
    --tc-sub-2: #6d6549;
    --tc-line: rgba(244, 242, 230, 0.24);      /* 黑板上的粉笔线 */
    --tc-line-2: rgba(59, 53, 36, 0.22);       /* 纸面细线 */
    --tc-accent: #c9a24b;        /* 证书金 */
    --tc-accent-deep: #a5813a;
    --tc-accent-soft: rgba(201, 162, 75, 0.16);
    --tc-accent2: #b8402f;       /* 印章红 */
    --tc-accent2-soft: rgba(184, 64, 47, 0.12);
    --tc-chalk-y: #ffd97a;       /* 粉笔黄 */
    --tc-chalk-b: #9fd9e8;       /* 粉笔蓝 */
    --tc-chalk-p: #f2a7b8;       /* 粉笔粉 */
    --tc-board-card: rgba(255, 255, 255, 0.06);
    --tc-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    --tc-chalk-glow: 0 0 1px rgba(244, 242, 230, 0.55), 0 0 8px rgba(244, 242, 230, 0.16);

    position: relative;
    padding: 26px 26px 22px;
    border-radius: 18px;
    color: var(--tc-ink);
    font-size: 15px;
    line-height: 1.75;
    background:
        radial-gradient(120% 80% at 50% 0%, var(--tc-bg) 0%, var(--tc-bg-deep) 100%);
    box-shadow: inset 0 0 0 6px rgba(0, 0, 0, 0.18), inset 0 0 60px rgba(0, 0, 0, 0.3), var(--tc-shadow);
    overflow: hidden;
}
/* 黑板擦痕底纹 */
.tc-page::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(112deg, rgba(255, 255, 255, 0.035) 0 2px, transparent 2px 26px),
        repeating-linear-gradient(-68deg, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 34px);
    pointer-events: none;
}
.tc-page > * { position: relative; z-index: 1; }

.tc-page h1, .tc-page h2, .tc-page h3 { line-height: 1.45; }
.tc-page b, .tc-page strong { color: var(--tc-chalk-y); text-shadow: var(--tc-chalk-glow); }
.tc-cert b, .tc-cert strong, .tc-panel b { color: var(--tc-accent-deep); text-shadow: none; }

/* ---------- 证书通用件：金框双线 + 四角角花 ---------- */
.tc-cert {
    position: relative;
    padding: 20px 22px;
    border-radius: 10px;
    border: 3px double var(--tc-accent);
    background:
        radial-gradient(90% 70% at 85% 110%, var(--tc-accent-soft) 0, transparent 60%),
        var(--tc-panel);
    color: var(--tc-ink-2);
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.4);
}
.tc-cert::after {
    content: "";
    position: absolute;
    inset: 6px;
    border: 1px solid var(--tc-accent-soft);
    border-radius: 6px;
    pointer-events: none;
}
.tc-corner {
    position: absolute;
    width: 18px;
    height: 18px;
    background: var(--tc-accent);
    clip-path: polygon(0 0, 100% 0, 0 100%);
    opacity: 0.85;
    z-index: 2;
}
.tc-corner--tl { top: 8px; left: 8px; }
.tc-corner--tr { top: 8px; right: 8px; transform: rotate(90deg); }
.tc-corner--br { bottom: 8px; right: 8px; transform: rotate(180deg); }
.tc-corner--bl { bottom: 8px; left: 8px; transform: rotate(270deg); }

/* 红色印章 */
.tc-seal {
    position: absolute;
    right: 16px;
    bottom: 14px;
    width: 62px;
    height: 62px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    border: 3px solid var(--tc-accent2);
    color: var(--tc-accent2);
    font-size: 13px;
    font-weight: 900;
    line-height: 1.25;
    text-align: center;
    letter-spacing: 0.08em;
    transform: rotate(-12deg);
    background: radial-gradient(circle, var(--tc-accent2-soft) 0, transparent 72%);
    opacity: 0.88;
}
.tc-seal::before {
    content: "";
    position: absolute;
    inset: 6px;
    border: 1px dashed var(--tc-accent2);
    border-radius: 50%;
}

/* ---------- 首屏 ---------- */
.tc-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(170px, 0.6fr) minmax(240px, 0.8fr);
    gap: 22px 26px;
    align-items: center;
    padding: 8px 0 26px;
    margin-bottom: 22px;
    border-bottom: 2px dashed var(--tc-line);
}
.tc-kicker {
    display: inline-block;
    padding: 5px 14px;
    margin-bottom: 12px;
    border-radius: 999px;
    border: 1.5px dashed var(--tc-chalk-y);
    color: var(--tc-chalk-y);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-shadow: var(--tc-chalk-glow);
}
.tc-hero h1 {
    margin: 0 0 10px;
    font-size: clamp(25px, 3.2vw, 36px);
    font-weight: 900;
    color: var(--tc-ink);
    text-shadow: var(--tc-chalk-glow);
    letter-spacing: 0.02em;
}
.tc-hero-sub { margin: 0 0 14px; max-width: 56ch; color: var(--tc-sub); font-size: 15px; }
.tc-hero-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 10px; padding: 0; list-style: none; }
.tc-hero-chips li {
    padding: 5px 13px;
    border-radius: 999px;
    border: 1px solid var(--tc-line);
    background: var(--tc-board-card);
    color: var(--tc-sub);
    font-size: 12px;
    font-weight: 700;
}
.tc-hero-note { margin: 0; font-size: 12.5px; color: var(--tc-chalk-p); text-shadow: var(--tc-chalk-glow); }

/* hero 黑板装饰：粉笔字 + 迷你证书 */
.tc-hero-board { display: grid; justify-items: center; gap: 12px; }
.tc-board-chalk1 {
    font-size: 17px;
    font-weight: 900;
    color: var(--tc-ink);
    text-shadow: var(--tc-chalk-glow);
    letter-spacing: 0.06em;
    transform: rotate(-2deg);
}
.tc-board-chalk1 em {
    font-style: normal;
    color: var(--tc-chalk-p);
    padding: 0 4px;
    border: 2px solid var(--tc-chalk-p);
    border-radius: 50% 45% 55% 48%;
    text-shadow: none;
}
.tc-board-chalk2 {
    font-size: 12.5px;
    font-weight: 800;
    color: var(--tc-chalk-b);
    text-shadow: var(--tc-chalk-glow);
    border-bottom: 2px dashed var(--tc-chalk-b);
    padding-bottom: 2px;
    transform: rotate(1deg);
}
.tc-cert--hero { width: 100%; max-width: 210px; padding: 22px 16px 26px; display: grid; gap: 6px; justify-items: center; text-align: center; }
.tc-cert-title { font-size: 16px; font-weight: 900; color: var(--tc-ink-2); letter-spacing: 0.12em; }
.tc-cert-sub { font-size: 11px; font-weight: 700; color: var(--tc-sub-2); letter-spacing: 0.06em; }

/* hero 读数 */
.tc-hero-readout {
    padding: 18px 20px;
    border-radius: 12px;
    border: 1.5px dashed var(--tc-line);
    background: var(--tc-board-card);
    display: grid;
    gap: 5px;
    justify-items: start;
}
.tc-readout-label {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.18em;
    color: var(--tc-sub);
}
.tc-readout-num {
    font-size: 27px;
    font-weight: 900;
    color: var(--tc-chalk-y);
    text-shadow: var(--tc-chalk-glow);
    font-variant-numeric: tabular-nums;
    line-height: 1.3;
}
.tc-readout-meta { font-size: 13px; font-weight: 700; color: var(--tc-chalk-b); }
.tc-readout-tip { margin-top: 4px; font-size: 12px; color: var(--tc-sub); opacity: 0.85; }

/* ---------- 通用 section ---------- */
.tc-section { margin-bottom: 28px; }
.tc-sec-head { margin-bottom: 14px; }
.tc-sec-head h2 {
    margin: 0 0 4px;
    font-size: 21px;
    font-weight: 900;
    color: var(--tc-ink);
    text-shadow: var(--tc-chalk-glow);
}
.tc-sec-head p { margin: 0; font-size: 13.5px; color: var(--tc-sub); }

/* ---------- 01 三阶段流程条 ---------- */
.tc-flow {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
    margin-bottom: 14px;
}
.tc-flow-node {
    position: relative;
    padding: 16px 16px 14px;
    border-radius: 14px;
    border: 1.5px dashed var(--tc-line);
    background: var(--tc-board-card);
    display: grid;
    gap: 7px;
    align-content: start;
}
.tc-flow-node + .tc-flow-node::before {
    content: "→";
    position: absolute;
    left: -23px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    font-weight: 900;
    color: var(--tc-chalk-b);
    text-shadow: var(--tc-chalk-glow);
}
.tc-flow-tag {
    justify-self: start;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.08em;
    border: 1px solid currentColor;
}
.tc-flow-node h3 { margin: 0; font-size: 16px; font-weight: 900; color: var(--tc-ink); text-shadow: var(--tc-chalk-glow); }
.tc-flow-node p { margin: 0; font-size: 12.5px; color: var(--tc-sub); line-height: 1.7; }
.tc-flow-out {
    margin-top: 2px;
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 800;
    background: var(--tc-board-card);
    border-left: 3px solid var(--tc-chalk-b);
    color: var(--tc-chalk-b);
}
.tc-flow-node--one .tc-flow-tag { color: var(--tc-chalk-b); }
.tc-flow-node--two .tc-flow-tag { color: var(--tc-chalk-p); }
.tc-flow-node--two .tc-flow-out { border-left-color: var(--tc-chalk-p); color: var(--tc-chalk-p); }
.tc-flow-node--three .tc-flow-tag { color: var(--tc-accent); }
.tc-flow-node--three {
    border: 2px solid var(--tc-accent);
    background:
        radial-gradient(80% 60% at 90% 100%, var(--tc-accent-soft) 0, transparent 60%),
        var(--tc-board-card);
}
.tc-flow-node--three .tc-flow-out { border-left-color: var(--tc-accent); color: var(--tc-chalk-y); }

.tc-emph {
    padding: 13px 18px;
    border-radius: 12px;
    border: 2px solid var(--tc-chalk-p);
    background: rgba(242, 167, 184, 0.08);
    color: var(--tc-ink);
    font-size: 13.5px;
    transform: rotate(-0.3deg);
}
.tc-emph b { color: var(--tc-chalk-p); }

/* ---------- 02 材料清单两栏 ---------- */
.tc-check {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(290px, 1fr);
    gap: 20px;
    align-items: start;
    margin-bottom: 28px;
}
.tc-check-input { display: grid; gap: 16px; min-width: 0; }
.tc-check-result { display: grid; gap: 14px; position: sticky; top: 16px; }

.tc-panel {
    padding: 20px 22px;
    border-radius: 14px;
    border: 3px double var(--tc-accent);
    background: var(--tc-panel);
    color: var(--tc-ink-2);
    box-shadow: var(--tc-shadow);
}
.tc-panel-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.tc-panel-head h2 { margin: 0; font-size: 18px; font-weight: 800; color: var(--tc-ink-2); }
.tc-panel-head p { margin: 2px 0 0; font-size: 13px; color: var(--tc-sub-2); }
.tc-step {
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: var(--tc-accent-deep);
    color: #fff;
    font-size: 15px;
    font-weight: 900;
}

.tc-mats { display: grid; gap: 8px; }
.tc-mat-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--tc-line-2);
    border-radius: 10px;
    background: var(--tc-panel-2);
    cursor: pointer;
    font-size: 13px;
    transition: border-color 0.14s, background 0.14s;
}
.tc-mat-item:hover { border-color: var(--tc-accent); }
.tc-mat-item input {
    margin: 4px 0 0;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    accent-color: var(--tc-accent2);
    cursor: pointer;
}
.tc-mat-item span { color: var(--tc-sub-2); }
.tc-mat-item span b { color: var(--tc-ink-2); }
.tc-mat-item.is-done { background: var(--tc-accent-soft); border-color: var(--tc-accent); }
.tc-mat-item.is-done span { text-decoration: line-through; text-decoration-color: rgba(59, 53, 36, 0.4); }

/* 齐备度证书卡 */
.tc-cert--progress { display: grid; gap: 10px; justify-items: stretch; }
.tc-rh-label { font-size: 12px; font-weight: 800; letter-spacing: 0.18em; color: var(--tc-sub-2); }
.tc-bar-wrap { display: flex; align-items: center; gap: 12px; }
.tc-bar {
    flex: 1;
    height: 10px;
    border-radius: 5px;
    background: var(--tc-panel-2);
    border: 1px solid var(--tc-line-2);
    overflow: hidden;
}
.tc-bar span {
    display: block;
    height: 100%;
    width: 0;
    border-radius: 5px;
    background: linear-gradient(90deg, var(--tc-accent) 0%, var(--tc-accent2) 100%);
    transition: width 0.3s;
}
.tc-bar-wrap b { font-size: 13px; color: var(--tc-accent-deep); font-variant-numeric: tabular-nums; white-space: nowrap; }
.tc-missing {
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px dashed var(--tc-accent2);
    background: var(--tc-accent2-soft);
    color: var(--tc-accent2);
    font-size: 12.5px;
    line-height: 1.7;
}
.tc-rh-tip { margin: 0; font-size: 12px; color: var(--tc-sub-2); line-height: 1.7; }

.tc-mini-card {
    padding: 16px 18px;
    border-radius: 12px;
    border: 1.5px dashed var(--tc-line);
    background: var(--tc-board-card);
}
.tc-mini-card h3 { margin: 0 0 8px; font-size: 15px; font-weight: 800; color: var(--tc-chalk-y); text-shadow: var(--tc-chalk-glow); }
.tc-mini-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.tc-mini-list li {
    font-size: 12.5px;
    color: var(--tc-sub);
    padding-left: 16px;
    position: relative;
    line-height: 1.7;
}
.tc-mini-list li::before { content: "✦"; position: absolute; left: 0; color: var(--tc-accent); }
.tc-mini-list li b { color: var(--tc-chalk-b); }

.tc-error {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid rgba(184, 64, 47, 0.5);
    background: var(--tc-accent2-soft);
    color: var(--tc-accent2);
    font-size: 13px;
}
.tc-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.tc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 44px;
    padding: 0 20px;
    border: 1.5px solid var(--tc-line-2);
    border-radius: 10px;
    background: var(--tc-panel-2);
    color: var(--tc-ink-2);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.12s, box-shadow 0.12s;
}
.tc-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 10px rgba(0, 0, 0, 0.18); }
.tc-btn--primary {
    border-color: var(--tc-accent-deep);
    background: linear-gradient(170deg, var(--tc-accent) 0%, var(--tc-accent-deep) 100%);
    color: #fff;
}

/* ---------- 03 时间轴 ---------- */
.tc-window { display: grid; gap: 14px; }
.tc-timeline {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 26px;
    padding: 18px 20px;
    border-radius: 14px;
    border: 1.5px dashed var(--tc-line);
    background: var(--tc-board-card);
}
.tc-tl-item {
    position: relative;
    padding-left: 34px;
}
.tc-tl-item::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 26px;
    bottom: -12px;
    border-left: 2px dashed var(--tc-line);
}
.tc-tl-item:last-child::before { display: none; }
.tc-tl-item::after {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid var(--tc-accent);
    background: radial-gradient(circle, var(--tc-accent) 0 4px, transparent 5px);
}
.tc-tl-item h3 { margin: 0 0 3px; font-size: 14.5px; font-weight: 800; color: var(--tc-ink); text-shadow: var(--tc-chalk-glow); }
.tc-tl-item p { margin: 0 0 10px; font-size: 12.5px; color: var(--tc-sub); line-height: 1.7; }
.tc-tl-item p b { color: var(--tc-chalk-b); }
.tc-fresh {
    padding: 13px 18px;
    border-radius: 12px;
    border-left: 4px solid var(--tc-chalk-b);
    background: rgba(159, 217, 232, 0.08);
    font-size: 13px;
    color: var(--tc-sub);
    line-height: 1.75;
}
.tc-fresh b { color: var(--tc-chalk-b); }

/* ---------- 04 类型选择器 ---------- */
.tc-type-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 1fr);
    gap: 16px;
    align-items: start;
}
.tc-field { display: grid; gap: 6px; }
.tc-label { font-size: 13px; font-weight: 800; color: var(--tc-ink-2); }
.tc-select-wrap { position: relative; display: block; }
.tc-select-wrap::after {
    content: "▾";
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--tc-accent-deep);
    pointer-events: none;
    font-size: 12px;
}
.tc-input {
    width: 100%;
    height: 44px;
    padding: 0 30px 0 12px;
    border: 1.5px solid var(--tc-line-2);
    border-radius: 10px;
    background: var(--tc-panel-2);
    color: var(--tc-ink-2);
    font-size: 14px;
    font-weight: 700;
    outline: none;
    appearance: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.tc-input:focus { border-color: var(--tc-accent-deep); box-shadow: 0 0 0 3px var(--tc-accent-soft); }
.tc-hint { margin: 12px 0 0; font-size: 12.5px; color: var(--tc-sub-2); line-height: 1.7; }

.tc-cert--req { display: grid; gap: 10px; min-height: 220px; align-content: start; }
.tc-req-title {
    margin: 0;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--tc-line-2);
    font-size: 17px;
    font-weight: 900;
    color: var(--tc-ink-2);
    letter-spacing: 0.04em;
}
.tc-req-row { display: grid; gap: 3px; }
.tc-req-key {
    display: inline-block;
    justify-self: start;
    padding: 2px 10px;
    border-radius: 999px;
    background: var(--tc-accent-soft);
    border: 1px solid var(--tc-accent);
    color: var(--tc-accent-deep);
    font-size: 11.5px;
    font-weight: 800;
    letter-spacing: 0.08em;
}
.tc-req-val { margin: 0; font-size: 13px; color: var(--tc-ink-2); line-height: 1.75; }

/* ---------- 05 认定 vs 注册 ---------- */
.tc-vs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.tc-vs-card {
    position: relative;
    padding: 20px 20px 16px;
    border-radius: 14px;
    border: 1.5px dashed var(--tc-line);
    background: var(--tc-board-card);
    overflow: hidden;
}
.tc-vs-card--cert { border-color: var(--tc-accent); }
.tc-vs-card--reg { border-color: var(--tc-chalk-b); }
.tc-vs-card--cert::before,
.tc-vs-card--reg::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
}
.tc-vs-card--cert::before { background: repeating-linear-gradient(90deg, var(--tc-accent) 0 14px, transparent 14px 22px); }
.tc-vs-card--reg::before { background: repeating-linear-gradient(90deg, var(--tc-chalk-b) 0 14px, transparent 14px 22px); }
.tc-vs-tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.1em;
    border: 1px solid currentColor;
    margin-bottom: 8px;
}
.tc-vs-card--cert .tc-vs-tag { color: var(--tc-accent); }
.tc-vs-card--reg .tc-vs-tag { color: var(--tc-chalk-b); }
.tc-vs-card h3 { margin: 0 0 8px; font-size: 16px; font-weight: 900; color: var(--tc-ink); text-shadow: var(--tc-chalk-glow); }
.tc-vs-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 7px; }
.tc-vs-list li { font-size: 13px; color: var(--tc-sub); padding-left: 18px; position: relative; line-height: 1.7; }
.tc-vs-list li::before { content: "✓"; position: absolute; left: 0; font-weight: 900; color: var(--tc-accent); }
.tc-vs-list li b { color: var(--tc-chalk-y); }

/* ---------- 06 被拒原因 ---------- */
.tc-rejects { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.tc-reject {
    position: relative;
    padding: 16px 18px 14px;
    border-radius: 14px;
    border: 1px solid var(--tc-line);
    background: var(--tc-board-card);
    overflow: hidden;
}
.tc-reject::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: repeating-linear-gradient(90deg, var(--tc-accent2) 0 10px, transparent 10px 18px);
    opacity: 0.8;
}
.tc-reject-no {
    position: absolute;
    top: 12px;
    right: 14px;
    font-size: 24px;
    font-weight: 900;
    color: var(--tc-accent2);
    opacity: 0.5;
    font-variant-numeric: tabular-nums;
}
.tc-reject h3 { margin: 0 0 6px; font-size: 15px; font-weight: 800; color: var(--tc-ink); text-shadow: var(--tc-chalk-glow); padding-right: 44px; }
.tc-reject p { margin: 0; font-size: 12.5px; color: var(--tc-sub); line-height: 1.75; }
.tc-reject p b { color: var(--tc-chalk-p); }

/* ---------- FAQ ---------- */
.tc-faq { display: grid; gap: 10px; }
.tc-faq .faq-item {
    border: 1px solid var(--tc-line);
    border-radius: 12px;
    background: var(--tc-board-card);
    overflow: hidden;
}
.tc-faq .faq-item summary {
    padding: 13px 16px;
    font-size: 14.5px;
    font-weight: 700;
    color: var(--tc-ink);
    cursor: pointer;
    list-style: none;
    position: relative;
}
.tc-faq .faq-item summary::-webkit-details-marker { display: none; }
.tc-faq .faq-item summary::after {
    content: "+";
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--tc-accent);
    font-weight: 900;
    font-size: 16px;
}
.tc-faq .faq-item[open] summary::after { content: "−"; }
.tc-faq .faq-a { padding: 0 16px 13px; font-size: 13.5px; color: var(--tc-sub); line-height: 1.75; }
.tc-faq .faq-a b { color: var(--tc-chalk-y); }

/* 相关工具 / 留言 */
.tc-page .related { margin-bottom: 24px; }
.tc-page .related h2 { color: var(--tc-ink); text-shadow: var(--tc-chalk-glow); }
.tc-comments { margin-bottom: 6px; }

/* ---------- 返回顶部 ---------- */
.tc-top {
    position: fixed;
    right: 22px;
    bottom: 26px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid var(--tc-accent);
    background: var(--tc-bg-deep);
    color: var(--tc-chalk-y);
    font-size: 18px;
    font-weight: 900;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all 0.25s;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    z-index: 50;
}
.tc-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.tc-top:hover { background: var(--tc-accent); color: #fff; }

/* ---------- toast ---------- */
.tc-toast {
    position: fixed;
    left: 50%;
    bottom: 90px;
    transform: translateX(-50%) translateY(10px);
    padding: 10px 20px;
    border-radius: 999px;
    background: var(--tc-accent2);
    color: #fff;
    font-size: 13.5px;
    font-weight: 700;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s;
    z-index: 60;
}
.tc-toast.show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

/* ---------- 深色模式：重定义全部变量 ---------- */
[data-theme="dark"] .tc-page {
    --tc-bg: #17241d;
    --tc-bg-deep: #101a14;
    --tc-panel: #22322a;
    --tc-panel-2: #2a3d33;
    --tc-ink: #e9e6d6;
    --tc-sub: rgba(233, 230, 214, 0.68);
    --tc-ink-2: #e5e1cf;
    --tc-sub-2: #a8a48c;
    --tc-line: rgba(233, 230, 214, 0.18);
    --tc-line-2: rgba(233, 230, 214, 0.14);
    --tc-accent: #d8b25e;
    --tc-accent-deep: #e3c074;
    --tc-accent-soft: rgba(216, 178, 94, 0.14);
    --tc-accent2: #d4574a;
    --tc-accent2-soft: rgba(212, 87, 74, 0.14);
    --tc-chalk-y: #ffe08a;
    --tc-chalk-b: #a8e0ee;
    --tc-chalk-p: #f5b3c2;
    --tc-board-card: rgba(255, 255, 255, 0.04);
    --tc-shadow: 0 8px 24px rgba(0, 0, 0, 0.55);
    --tc-chalk-glow: 0 0 1px rgba(233, 230, 214, 0.5), 0 0 8px rgba(233, 230, 214, 0.12);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .tc-hero { grid-template-columns: minmax(0, 1.5fr) minmax(230px, 0.8fr); }
    .tc-hero-board { display: none; }
    .tc-check { grid-template-columns: 1fr; }
    .tc-check-result { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .tc-flow { grid-template-columns: 1fr; gap: 20px; }
    .tc-flow-node + .tc-flow-node::before { content: "↓"; left: 50%; top: -22px; transform: translateX(-50%); }
    .tc-type-grid { grid-template-columns: 1fr; }
    .tc-rejects { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
    .tc-page { padding: 18px 14px 16px; font-size: 14px; }
    .tc-hero { grid-template-columns: 1fr; padding: 4px 0 20px; }
    .tc-hero h1 { font-size: 24px; }
    .tc-panel { padding: 16px 14px; }
    .tc-check-result { grid-template-columns: 1fr; }
    .tc-timeline { grid-template-columns: 1fr; padding: 14px 14px; }
    .tc-vs, .tc-rejects { grid-template-columns: 1fr; }
    .tc-actions { display: grid; grid-template-columns: 1fr; }
    .tc-actions .tc-btn { width: 100%; }
    .tc-sec-head h2 { font-size: 18px; }
    .tc-seal { width: 54px; height: 54px; font-size: 12px; }
    .tc-top { right: 14px; bottom: 18px; }
}