/* ===== 在线试用工作台 ===== */

/* 工作台区块（随主题切换底色与文字） */
.trial-workspace {
    background: var(--ws-bg);
    color: var(--panel-text);
}
.trial-workspace .section-desc { color: var(--panel-text-muted); }

.trial-layout {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    margin-top: 16px;
}

.trial-side {
    width: 300px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.trial-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* 面板卡片 */
.panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: background var(--transition), border-color var(--transition);
}
.panel-head {
    background: var(--panel-head-bg);
    color: var(--panel-head-text);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--panel-border);
}

/* 特征树 */
.tree-body {
    padding: 10px;
    max-height: 320px;
    overflow-y: auto;
}
.tree-empty {
    color: var(--panel-text-muted);
    font-size: 13px;
    line-height: 1.8;
    text-align: center;
    padding: 24px 10px;
    margin: 0;
}
.tree-node {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    color: var(--panel-text);
    transition: var(--transition);
    border: 1px solid transparent;
}
.tree-node:hover {
    background: rgba(0, 180, 216, 0.12);
    border-color: rgba(0, 180, 216, 0.3);
}
.tree-node.active {
    background: rgba(247, 181, 0, 0.16);
    border-color: var(--color-accent);
    color: var(--tree-active-text);
    font-weight: 600;
}
.tn-ico {
    color: var(--color-primary);
    font-size: 13px;
    width: 18px;
    text-align: center;
    flex-shrink: 0;
}
.tree-node.active .tn-ico { color: var(--color-accent); }

/* 导航 Tab（特征导航 / 工序导航） */
.nav-tabs {
    display: flex;
    border-bottom: 1px solid var(--panel-border);
}
.nav-tab {
    flex: 1;
    padding: 11px 8px;
    border: none;
    background: var(--tab-inactive-bg);
    color: var(--panel-text-muted);
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    border-right: 1px solid var(--panel-border);
}
.nav-tab:last-child { border-right: none; }
.nav-tab:hover { color: var(--color-primary); }
.nav-tab.active {
    background: var(--panel-bg);
    color: var(--color-primary);
    box-shadow: inset 0 -2px 0 var(--color-primary);
}
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* 功能按钮（纵向编号列表） */
.fn-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 14px;
}
.fn-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 14px;
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    background: rgba(0, 180, 216, 0.08);
    color: var(--fn-text);
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}
.fn-btn:hover {
    background: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}
.fn-btn:active { transform: translateY(0); }
.fn-num {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    line-height: 1;
    transition: var(--transition);
}
.fn-btn:hover .fn-num {
    background: #fff;
    color: var(--color-primary);
}
.fn-ico { font-size: 16px; flex-shrink: 0; }
.fn-label { font-weight: 600; }

/* 工具栏 */
.toolbar {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.upload-btn {
    cursor: pointer;
    margin: 0;
}
.model-info {
    font-size: 14px;
    color: var(--panel-text-muted);
    font-weight: 500;
    padding: 6px 12px;
    background: var(--surface-2);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
}

/* 3D 视口 */
.viewport {
    position: relative;
    height: 60vh;
    min-height: 420px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--viewport-bg);
    border: 1px solid var(--color-border-dark);
    box-shadow: var(--shadow-md);
    transition: background var(--transition), border-color var(--transition);
}
.viewport.drag {
    outline: 2px dashed var(--color-primary);
    outline-offset: -6px;
}
.viewport canvas {
    display: block;
}
.viewport-tip {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--viewport-tip);
    pointer-events: none;
    text-align: center;
    gap: 8px;
}
.viewport-tip .vt-ico { font-size: 52px; opacity: 0.5; }
.viewport-tip p { margin: 0; font-size: 16px; font-weight: 600; color: var(--viewport-tip); }
.viewport-tip small { font-size: 13px; opacity: 0.7; }

/* 状态日志（终端风格，底色/文字随主题切换，由 --log-bg / --log-text 驱动） */
.log-panel { box-shadow: var(--shadow-sm); }
.log-body {
    padding: 12px 14px;
    max-height: 180px;
    overflow-y: auto;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 12.5px;
    line-height: 1.7;
    background: var(--log-bg);
    color: var(--log-text);
}
.log-line { white-space: pre-wrap; word-break: break-all; }
.log-err { color: #ff7b7b; }
.log-ok { color: #6ee7a8; }
/* 浅色主题：日志栏底色已转浅（--log-bg），错误/成功行也要用深色可读配色 */
[data-theme="light"] .log-err { color: #c62828; }
[data-theme="light"] .log-ok { color: #1a7f4b; }

/* ===== 工艺配置弹窗 ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--modal-overlay);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.2s ease;
    padding: 24px;
}
.modal-overlay.open { opacity: 1; }
.modal-overlay[hidden] { display: none; }
.modal {
    width: 100%;
    max-width: 560px;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    background: var(--panel-bg);
    color: var(--panel-text);
    border-radius: var(--radius-md);
    box-shadow: 0 24px 60px rgba(10, 22, 40, 0.35);
    transform: translateY(12px) scale(0.98);
    transition: transform 0.2s ease;
    overflow: hidden;
}
.modal-overlay.open .modal { transform: translateY(0) scale(1); }
.modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    /* 与 .panel-head 同一组主题变量：浅色=浅灰蓝、深色=navy，
       不再用 --gradient-dark（两个主题同值，浅色下是一条突兀的深色条） */
    background: var(--panel-head-bg);
    color: var(--panel-head-text);
    border-bottom: 1px solid var(--panel-border);
}
.modal-head h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--panel-head-text);
}
.modal-close {
    border: none;
    background: rgba(128, 152, 180, 0.18);
    color: var(--panel-head-text);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition);
}
.modal-close:hover { background: rgba(128, 152, 180, 0.34); }
.modal-body { padding: 8px 20px 4px; overflow-y: auto; }
.modal-foot {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 14px 20px;
    border-top: 1px solid var(--panel-border);
    background: var(--surface-2);
}

/* 配置分区 */
.pc-section { padding: 12px 0; border-bottom: 1px dashed var(--panel-border); }
.pc-section:last-child { border-bottom: none; }
.pc-section-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}
.pc-section-head h4 { margin: 0; font-size: 14px; font-weight: 700; color: var(--color-primary); }
.pc-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
}

/* 刀具 */
.pc-tool { margin-bottom: 12px; }
.pc-tool-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
}
.pc-tool-title { display: flex; align-items: center; gap: 8px; line-height: 1.3; }
.pc-tool-title strong { font-size: 13.5px; color: var(--panel-text); }
.pc-tool-title small { font-size: 11.5px; color: var(--panel-text-muted); }
.pc-count {
  display: inline-flex;
  align-items: center;
  padding: 1px 9px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--chip-text);
  background: var(--chip-bg);
  border: 1px solid rgba(0, 180, 216, 0.35);
  border-radius: 999px;
}
.pc-mini {
    border: 1px solid var(--color-primary);
    background: rgba(0, 180, 216, 0.1);
    color: var(--fn-text);
    border-radius: var(--radius-sm);
    padding: 5px 10px;
    font-size: 12.5px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
    white-space: nowrap;
}
.pc-mini:hover { background: var(--color-primary); color: #fff; }
.pc-del { border-color: #e07a7a; background: #fdecec; color: #c0392b; }
.pc-del:hover { background: #c0392b; color: #fff; border-color: #c0392b; }
.pc-switch {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    color: var(--panel-text);
    cursor: pointer;
    user-select: none;
}
.pc-switch input { width: 15px; height: 15px; accent-color: var(--color-primary); cursor: pointer; }

.pc-tool-list { display: flex; flex-direction: column; gap: 8px; }
.pc-tool-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    flex-wrap: wrap;
    padding: 10px 12px;
    background: var(--surface-2);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
}
.pc-field { display: flex; flex-direction: column; gap: 4px; font-size: 11.5px; color: var(--panel-text-muted); }
.pc-field input, .pc-field select, .pc-param-row input, .pc-param-row select {
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 7px 9px;
    font-size: 13px;
    font-family: inherit;
    color: var(--panel-text);
    background: var(--surface-2);
    min-width: 0;
}
.pc-field input:focus, .pc-param-row input:focus, .pc-param-row select:focus, .pc-field select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(0, 180, 216, 0.18);
}
.pc-field input[type="text"] { width: 130px; }
.pc-field input[type="number"] { width: 86px; }

/* 加工参数 */
.pc-param { margin-bottom: 12px; }
.pc-param-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.pc-param-head span { font-size: 13px; font-weight: 600; color: var(--panel-text); }
.pc-unit {
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 5px 8px;
    font-size: 12.5px;
    font-family: inherit;
    color: var(--panel-text);
    background: var(--surface-2);
    cursor: pointer;
}
.pc-param-row { display: flex; align-items: center; gap: 8px; }
.pc-param-row input[type="number"] { flex: 1; min-width: 0; }
.pc-suffix { font-size: 13px; color: var(--panel-text-muted); font-weight: 600; min-width: 56px; }

/* ---------- 参数卡两列网格（r99） ----------
   参数值普遍只有 2~3 位数字，一卡一行太占高度。这里改成每行两个：
   标签在左（过长省略，hover 有 title），输入框在右（定宽，不撑满）。
   `pc-full` 是跨两列的例外（刀具 / 毛坯下拉、孔特征面这种带按钮和说明的卡）。 */
.pc-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 18px;
    row-gap: 4px;
    align-items: center;
}
.pc-grid > .pc-param {
    margin-bottom: 0;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}
.pc-grid > .pc-param > .pc-param-head {
    flex: 1 1 auto;
    min-width: 0;
    margin-bottom: 0;
}
.pc-grid > .pc-param > .pc-param-head span {
    display: block;
    font-size: 12px;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.pc-grid > .pc-param > .pc-param-row {
    /* 控件固定 190，后面跟一个 28 的单位位：下拉框那行没有单位，
       这个位置就自然空着，于是「下拉框右沿 == 输入框右沿」是一条直线 */
    flex: 0 0 226px;
    width: 226px;
    justify-content: flex-start;
}
.pc-grid > .pc-param.pc-full > .pc-param-row {
    flex: 1 1 auto;
    width: auto;
    min-width: 0;
    justify-content: flex-start;
}
.pc-grid > .pc-param > .pc-param-row input[type="number"] {
    flex: 0 0 190px;
    width: 190px;
    min-width: 0;
}
.pc-grid > .pc-param > .pc-param-row select {
    flex: 0 0 190px;
    width: 190px;
}
.pc-grid > .pc-param > .pc-param-row .pc-suffix {
    /* 单位单独占一列：固定宽度 + 左对齐，所有单位都从同一条竖线起头，
       短单位（°）不会因为右对齐而离输入框太远 */
    flex: 0 0 28px;
    min-width: 28px;
    text-align: left;
}
/* 无单位的卡不占位，输入框照旧 190 宽、右沿仍与下拉框齐 */
.pc-grid > .pc-param > .pc-param-row .pc-suffix:empty { display: none; }
/* 跨两列的卡（刀具 / 毛坯 / 孔特征面）恢复原来的竖排，下拉给足宽度 */
.pc-grid > .pc-param.pc-full { grid-column: 1 / -1; display: block; }
.pc-grid > .pc-param.pc-full > .pc-param-head { margin-bottom: 6px; }
.pc-grid > .pc-param.pc-full > .pc-param-row select {
    flex: 1 1 auto;
    width: auto;
    max-width: 360px;
}
.pc-grid > .pc-param.pc-full > .pc-param-row input[type="number"] { flex: 1 1 auto; }
@media (max-width: 760px) {
    .pc-grid { grid-template-columns: minmax(0, 1fr); row-gap: 8px; }
}
.pc-range { display: flex; align-items: center; gap: 6px; }
.pc-range input { width: 90px; }
.pc-range span { color: var(--panel-text-muted); font-size: 13px; }
.pc-percent-hint {
  margin-top: 5px;
  font-size: 11.5px;
  color: var(--panel-text-muted);
}
.pc-msg {
  margin: 2px 0 12px;
  padding: 9px 12px;
  font-size: 12.5px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  display: none;
}
.pc-msg-err { display: block; color: var(--msg-err-text); background: var(--msg-err-bg); border: 1px solid var(--msg-err-border); }
.pc-msg-ok  { display: block; color: var(--msg-ok-text);  background: var(--msg-ok-bg);  border: 1px solid var(--msg-ok-border); }

/* 响应式 */
@media (max-width: 900px) {
    .trial-layout { flex-direction: column; }
    .trial-side { width: 100%; flex-direction: row; flex-wrap: wrap; }
    .trial-side .panel { flex: 1; min-width: 240px; }
    .viewport { height: 52vh; min-height: 320px; }
}

/* =========================================================
   手机端（≤760px）：首屏收紧 / 视口降高 / 弹窗改底部抽屉
   ========================================================= */
@media (max-width: 760px) {
    /* 1) 首屏 hero：原来手机要滚两屏才看到工作台 */
    .page-hero { padding: 92px 0 26px; }
    .page-hero h1 { font-size: 23px; line-height: 1.4; margin-bottom: 12px; }
    .page-hero p { font-size: 13.5px; line-height: 1.7; }
    .page-hero-actions { margin-top: 14px; gap: 10px; }
    .page-hero-actions .btn { padding: 9px 18px; font-size: 13.5px; }
    .breadcrumb { font-size: 12px; margin-bottom: 12px; }
    .trial-workspace { padding-top: 26px; padding-bottom: 40px; }
    .trial-workspace .section-header { margin-bottom: 10px; }
    .trial-workspace .section-title { font-size: 22px; }

    /* 2) 3D 视口：52vh（≈440px）太占屏，降到 38vh */
    .trial-layout { gap: 14px; }
    .trial-side { gap: 12px; }
    .viewport { height: 38vh; min-height: 230px; }
    .viewport-tip { gap: 6px; }
    .viewport-tip .vt-ico { font-size: 36px; }
    .viewport-tip p { font-size: 14px; }
    .viewport-tip small { font-size: 12px; }

    /* 3) 面板与按钮压扁，触摸目标仍够大 */
    .panel-head { padding: 10px 12px; font-size: 13px; }
    .fn-btn { padding: 11px 12px; font-size: 13.5px; gap: 10px; }
    .fn-num { width: 22px; height: 22px; font-size: 12px; }
    .toolbar { gap: 10px; }
    .upload-btn, .model-info { font-size: 13px; }
    .log-body { max-height: 150px; font-size: 12px; }

    /* 4) 工作弹窗改底部抽屉：贴底、上方留出页面，能边看模型边调参数
          （#simModal 是浮在右下角、事件穿透的仿真面板，不能改） */
    #roughModal, #toolModal { align-items: flex-end; padding: 0; }
    /* 注意：trial.html 内联里还有 #roughModal/#toolModal 的 max-height: 92vh，
       顺序在 trial.css 之后，这里必须 !important 才压得住 */
    #roughModal .modal, #toolModal .modal {
        max-width: 100%;
        border-radius: 16px 16px 0 0;
        transform: translateY(100%);
    }
    /* 粗加工抽屉只占 60vh：上方还要露出 3D 视口，才能边看模型边调参数 */
    #roughModal .modal { max-height: 60vh !important; }
    #toolModal .modal { max-height: 80vh !important; }
    #roughModal.open .modal, #toolModal.open .modal { transform: translateY(0); }
    .modal-head { padding: 12px 16px; }
    .modal-head h3 { font-size: 15px; }
    .modal-close { width: 34px; height: 34px; font-size: 19px; }
    .modal-body { padding: 10px 16px 4px; }
    .modal-foot { padding: 10px 16px calc(10px + env(safe-area-inset-bottom, 0px)); gap: 10px; }
    .modal-foot .btn { flex: 1 1 0; justify-content: center; }

    /* 参数表单是两列 grid（JS 内联 1fr 1fr），手机上会把右列挤出容器被裁掉 */
    #rcParams { grid-template-columns: 1fr !important; column-gap: 0 !important; }
    #rcParams select, #rcParams input[type="number"] { width: 100%; min-width: 0; }
    .pc-param { margin-bottom: 10px; }
    .pc-suffix { min-width: 44px; font-size: 12.5px; }

    /* 5) 只有「基础功能 / 加工仿真」这两个平铺按钮的面板排两列；
          「轨迹生成」是可展开的分类树（.fn-cat），塞两列会把标签挤成三行，保持单列 */
    .fn-panel-base .fn-list, .fn-panel-sim .fn-list {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .fn-tree { gap: 6px; padding: 10px 12px; }
    .fn-btn { padding: 10px 10px; font-size: 13px; gap: 8px; }

    /* 6) 刀具弹窗的表单也是两列（#tlBase / #tlParams），同样会被挤出裁切 */
    #toolModal .tl-form #tlBase,
    #toolModal .tl-form #tlParams {
        grid-template-columns: 1fr;
        column-gap: 0;
    }
    #toolModal .tl-form select,
    #toolModal .tl-form input[type="number"],
    #toolModal .tl-form input[type="text"] { width: 100%; min-width: 0; }
    #toolModal #toolPrevCanvas { width: 100%; height: 200px; }

    /* 7) 参数弹窗里的「层数提示」在手机上占掉半个可视区，压小。
          .rc-hint/.pc-msg 的样式写在 trial.html 内联块里、位置在 trial.css 之后，
          用 id 提高特异性才压得住 */
    #rcDepthHint {
        font-size: 11.5px;
        line-height: 1.6;
        padding: 8px 10px;
        margin: 6px 0 2px;
    }
    #rcMsg { font-size: 12px; padding: 7px 10px; }

    /* 8) 仿真面板是浮在右下角的非模态浮层，手机上原来满宽满高把模型全盖住 → 限高贴底 */
    #simModal {
        padding: 0 10px calc(8px + env(safe-area-inset-bottom, 0px));
    }
    #simModal .modal {
        width: 100%;
        max-width: 100%;
        max-height: 56vh !important;
        border-radius: 14px 14px 0 0;
    }
    #simModal .sim-wrap { gap: 8px; }
    #simModal.collapsed .modal { border-radius: 12px; }
    #simModal .modal-body { padding: 6px 14px 4px; }
    #simModal .modal-foot { padding: 8px 14px calc(8px + env(safe-area-inset-bottom, 0px)); }

    /* 9) 说明弹窗保住边距，别贴边 */
    #trialNotice { padding: 16px; }
    #trialNotice .modal { max-height: 82vh; }
    #trialNotice .modal-body { padding: 14px 18px; }
    .tn-lead { font-size: 13.5px; line-height: 1.75; }
    .tn-note { font-size: 12.5px; }
}

/* ===== 仿真面板折叠：折叠后只剩一条，露出模型 ===== */
#simModal .sim-head-btns { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }
/* 三个按钮一律圆钮，图标全部用 CSS 画：
   字体符号 ▾ 在同字号下比 × 矮一大截，撑不满 30px 圆钮 */
#simModal .modal-close { display: inline-flex; align-items: center; justify-content: center; padding: 0; }
#simModal .sim-fold { position: relative; font-size: 0; }
#simModal .sim-fold::before {
    content: '';
    width: 9px;
    height: 9px;
    border-right: 2px solid var(--panel-head-text);
    border-bottom: 2px solid var(--panel-head-text);
    transform: rotate(45deg);
    transition: transform .18s ease;
}
#simModal.collapsed .sim-fold::before { transform: rotate(-135deg); }
/* 关闭：两根 2px 斜线，与折叠箭头同一笔画粗细 */
#simModal #simClose { position: relative; font-size: 0; }
#simModal #simClose::before,
#simModal #simClose::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 13px;
    height: 2px;
    border-radius: 1px;
    background: var(--panel-head-text);
}
#simModal #simClose::before { transform: translate(-50%, -50%) rotate(45deg); }
#simModal #simClose::after { transform: translate(-50%, -50%) rotate(-45deg); }
#simModal .sim-mini { display: none; align-items: center; gap: 8px; margin-left: auto; margin-right: 4px; }
#simModal .sim-mini-pct {
    font-size: 12.5px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--panel-head-text);
    min-width: 38px;
    text-align: right;
}
#simModal .sim-mini-btn {
    position: relative;
    width: 30px;
    height: 30px;
    padding: 0;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0;                 /* 字形只给读屏与自检，视觉交给伪元素 */
    background: var(--color-primary);
    color: #fff;
    transition: filter .16s ease, transform .12s ease;
}
/* 暂停态 → 实心三角 */
#simModal .sim-mini-btn::before {
    content: '';
    width: 0;
    height: 0;
    margin-left: 3px;             /* 三角形重心偏左，右移补视觉居中 */
    border-left: 10px solid #fff;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}
/* 播放中 → 两根竖条 */
#simModal .sim-mini-btn[data-state="playing"]::before {
    width: 3px;
    height: 10px;
    margin: 0 5px 0 0;            /* 两根条合计 8px，右移 5px 补偿 */
    border: none;
    border-radius: 1px;
    background: #fff;
    box-shadow: 5px 0 0 #fff;
}
#simModal .sim-mini-btn:hover { filter: brightness(1.1); }
#simModal .sim-mini-btn:active { transform: scale(0.94); }
#simModal.collapsed .sim-mini { display: flex; }
#simModal.collapsed .modal-body,
#simModal.collapsed .modal-foot { display: none; }
/* 折叠态的进度线画在标题条下沿（宽度由 JS 写 --sim-pct） */
#simModal.collapsed .modal-head { position: relative; padding-bottom: 14px; }
#simModal.collapsed .modal-head::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    height: 3px;
    width: var(--sim-pct, 0%);
    background: var(--color-primary);
    transition: width .12s linear;
}

@media (max-width: 760px) {
    /* 手机上 .modal-close 已放到 34px，迷你播放跟上，别一大一小 */
    #simModal .sim-mini-btn { width: 34px; height: 34px; }
}