/* 365Lab 图片分割 — 全站样式（现代浅色扁平，桌面/移动自适应） */
*, *::before, *::after { box-sizing: border-box; }
:root {
  --bg: #f6f8fb; --surface: #ffffff; --surface-2: #f1f4f9;
  --border: #e4e9f0; --border-strong: #cfd8e3;
  --text: #1f2733; --text-2: #566072; --text-3: #5f6875;
  --accent: #3a68ec; --accent-2: #2a54cb; --accent-soft: #eaf0ff;
  --ok: #22a06b; --danger: #e0484d;
  --radius: 14px; --radius-sm: 9px; --shadow: 0 1px 2px rgba(20,30,50,.05), 0 8px 24px rgba(20,30,50,.06);
  --shadow-sm: 0 1px 2px rgba(20,30,50,.06);
  --maxw: 1180px; --header-h: 60px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --head-bg: rgba(255,255,255,.85); /* v47：头部底色抽成变量，供深色主题覆盖 */
  /* ── v47 深色调色板（改色只改这一处，浅色态与深色态共用） ── */
  --d-bg: #0f1520; --d-surface: #171f2c; --d-surface-2: #1d2634;
  --d-border: #2a3547; --d-border-strong: #3d4c63;
  --d-text: #e9eef7; --d-text-2: #a8b4c8; --d-text-3: #8e9bb0;
  --d-accent: #6b93f8; --d-accent-2: #4b7ae8; --d-accent-soft: #1b2740;
  --d-ok: #2fbe86; --d-danger: #f0666c;
  --d-shadow: 0 1px 2px rgba(0,0,0,.42), 0 8px 24px rgba(0,0,0,.34);
  --d-shadow-sm: 0 1px 2px rgba(0,0,0,.42);
  --d-head-bg: rgba(23,31,44,.85);
  /* v47 派生：--solid 用于实心强调块，保证其上白字 >=4.5:1 */
  --panel-bg: #f2f5fa;
}
/* 深色只保留这一条分支：data-theme 由 head.js 在首屏绘制前按「存储偏好 -> 系统偏好」解析后写入，
   避免深色规则在 [data-theme] 与 @media(prefers-color-scheme) 两处重复维护。 */
html[data-theme="dark"] {
  --bg: var(--d-bg); --surface: var(--d-surface); --surface-2: var(--d-surface-2);
  --border: var(--d-border); --border-strong: var(--d-border-strong);
  --text: var(--d-text); --text-2: var(--d-text-2); --text-3: var(--d-text-3);
  --accent: var(--d-accent); --accent-2: var(--d-accent-2); --accent-soft: var(--d-accent-soft);
  --ok: var(--d-ok); --danger: var(--danger);
  --shadow: var(--d-shadow); --shadow-sm: var(--d-shadow-sm);
  --head-bg: var(--d-head-bg);
  --panel-bg: #141c28;   /* 覆盖 v42 工具栏底色，深色下压暗一档 */
  --solid: #3a63d8;      /* 实心强调（按钮 / 激活块）底色 */
  --solid-2: #2f53c4;    /* 悬停态底色 */
}
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.6; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }
[hidden] { display: none !important; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; font-weight: 800; letter-spacing: -.01em; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.hidden { display: none !important; }

/* ── Header ── */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--head-bg); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--border); }
.site-header .inner { max-width: var(--maxw); margin: 0 auto; height: var(--header-h); display: flex; align-items: center; gap: 16px; padding: 0 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; letter-spacing: -.02em; }
.brand .logo { width: 30px; height: 30px; border-radius: 8px; background: linear-gradient(135deg, var(--accent), #7aa2ff); display: grid; place-items: center; color: #fff; }
.brand .logo svg { width: 18px; height: 18px; }
.brand small { font-weight: 600; color: var(--text-3); font-size: 12px; margin-left: 2px; }
.brand .brand-col { display: flex; flex-direction: column; line-height: 1.3; gap: 1px; }
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-links a { padding: 8px 14px; border-radius: 10px; color: var(--text-2); font-weight: 600; font-size: 15px; }
.nav-links a:hover { background: var(--surface-2); color: var(--text); }
.nav-links a.cta { background: var(--accent); color: #fff; }
.nav-links a.cta:hover { background: var(--accent-2); }
.lang-btn { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; padding: 0; border: 1px solid var(--border-strong); background: var(--surface); border-radius: 50%; font-weight: 800; font-size: 13px; letter-spacing: .02em; color: var(--text-2); cursor: pointer; transition: border-color .15s, color .15s, background .15s; } /* v60：圆框与主题钮同规格（用户点名） */
.lang-btn:hover { border-color: var(--accent); color: var(--accent); }
.nav-toggle { display: none; width: 40px; height: 40px; border: 1px solid var(--border); background: var(--surface); border-radius: 10px; cursor: pointer; place-items: center; }
.nav-toggle svg { width: 20px; height: 20px; }

/* ── Hero ── */
.hero { padding: 64px 0 40px; text-align: center; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: -120px -60px auto; height: 340px; background: radial-gradient(60% 100% at 50% 0, var(--accent-soft), transparent 70%); z-index: -1; }
.badge { display: inline-flex; align-items: center; gap: 8px; background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 7px 16px; font-size: 13.5px; font-weight: 700; color: var(--text-2); box-shadow: var(--shadow-sm); }
.badge b { color: var(--accent); }
.hero h1 { font-size: clamp(30px, 5vw, 52px); margin: 22px 0 0; }
.hero .sub { max-width: 780px; margin: 16px auto 0; color: var(--text-2); font-size: clamp(15px, 1.7vw, 18px); text-align: left; } /* v59：副文案左对齐（用户点名） */
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 28px; }
.btn { display: inline-flex; align-items: center; gap: 8px; height: 50px; padding: 0 26px; border-radius: 12px; font-weight: 700; font-size: 16px; border: 1px solid transparent; cursor: pointer; transition: transform .12s ease, background .2s; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 6px 18px rgba(59,110,245,.28); }
.btn-primary:hover { background: var(--accent-2); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.hero-stats { display: flex; gap: 28px; justify-content: center; flex-wrap: wrap; margin-top: 30px; color: var(--text-2); font-weight: 600; font-size: 14px; }
.hero-stats span b { color: var(--text); font-size: 16px; }

/* ── Section ── */
.section { padding: 56px 0; }
.section.alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 36px; }
.sec-head h2 { font-size: clamp(24px, 3.4vw, 34px); }
.sec-head p { color: var(--text-2); margin: 0; }
.grid { display: grid; gap: 18px; }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); } /* v59：分割方式 4 卡同行（用户点名） */
.g-2 { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); transition: transform .15s ease, box-shadow .2s; }
a.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--border-strong); }
.section.alt .card { background: var(--surface-2); }
.card .ic { width: 46px; height: 46px; border-radius: 12px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; margin-bottom: 14px; }
.card .ic svg { width: 24px; height: 24px; }
.card h3 { font-size: 18px; margin: 0 0 6px; }
.card p { margin: 0; color: var(--text-2); font-size: 14.5px; }
.mode-card .thumb { height: 96px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border); margin-bottom: 14px; display: grid; place-items: center; }
.mode-card .thumb svg { width: 84px; height: 74px; color: var(--accent); }
.step-num { width: 34px; height: 34px; border-radius: 10px; background: var(--accent); color: #fff; font-weight: 800; display: grid; place-items: center; font-size: 16px; }

/* ── FAQ ── */
.faq { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 10px; overflow: hidden; background: var(--surface); }
.faq-q { width: 100%; text-align: left; padding: 16px 18px; font-size: 16px; font-weight: 700; background: none; border: none; cursor: pointer; display: flex; justify-content: space-between; gap: 12px; align-items: center; color: var(--text); }
.faq-q::after { content: "+"; font-size: 22px; color: var(--text-3); transition: transform .2s; }
.faq-item.open .faq-q::after { content: "−"; color: var(--accent); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .28s ease; }
.faq-a div { padding: 0 18px 16px; color: var(--text-2); }
.faq-item.open .faq-a { max-height: 300px; }

.cta-band { text-align: center; background: linear-gradient(135deg, var(--accent), #6d8bff); color: #fff; border-radius: 22px; padding: 48px 24px; }
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,.92); margin: 0 0 22px; }
.cta-band .btn-primary { background: #fff; color: var(--accent); box-shadow: none; }

/* ── Footer ── */
.site-footer { background: var(--surface); border-top: 1px solid var(--border); padding: 40px 0 30px; margin-top: 20px; }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; } /* v60：品牌 + 工具/帮助/关于 三栏 */
.site-footer h3 { font-size: 15px; margin-bottom: 12px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 8px; }
.site-footer a { color: var(--text-2); font-size: 14px; }
.site-footer a:hover { color: var(--accent); }
.site-footer .brand { margin-bottom: 10px; }
.site-footer .tagline { color: var(--text-2); font-size: 14px; max-width: 340px; }
.site-footer .copy { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--border); color: var(--text-3); font-size: 13px; text-align: center; }
/* v60：联系邮箱一键复制胶囊 + 教程有序列表 */
.mail-copy { display: inline-flex; align-items: center; padding: 9px 16px; border: 1px dashed var(--border-strong); border-radius: 10px; font-weight: 700; font-size: 15px; color: var(--text); background: var(--surface-2); cursor: pointer; user-select: all; transition: border-color .15s, color .15s; }
.mail-copy:hover, .mail-copy:focus-visible { border-color: var(--accent); border-style: solid; color: var(--accent); }
.mail-direct { margin-left: 12px; font-size: 14px; font-weight: 600; color: var(--accent); text-decoration: none; }
.legal ol { padding-left: 24px; margin: 10px 0 18px; }
.legal ol li { margin-bottom: 9px; line-height: 1.7; }

/* ── Legal ── */
.legal { padding: 40px 0 60px; }
.legal article { max-width: 820px; margin: 0 auto; }
.legal h1 { font-size: 32px; }
.legal h2 { font-size: 20px; margin-top: 30px; }
.legal p, .legal li { color: var(--text-2); }
.legal .updated { color: var(--text-3); font-size: 14px; }
.legal ul { padding-left: 20px; }

/* ── Tool workbench ── */
body[data-app="tool"] { background: var(--bg); overflow: hidden; height: 100vh; height: 100dvh; display: flex; flex-direction: column; } /* dvh：iOS Safari 地址栏收缩不再遮底 */
body[data-app="tool"] .site-header { flex: none; }
/* v60：仅工具页——顶部菜单通全屏宽 + 底部版权条常驻 */
body[data-app="tool"] .site-header .inner { max-width: none; padding: 0 16px; }
.tool-foot { flex: none; padding: 7px 16px; text-align: center; font-size: 12px; color: var(--text-3); background: var(--surface); border-top: 1px solid var(--border); }
.tool-shell { flex: 1; min-height: 0; display: flex; flex-direction: column; }
/* 三栏工作台：① 分割设置 | ② 预览画布 | ③ 导出与结果 */
.tool-main {
  flex: 1; min-height: 0; display: grid;
  grid-template-columns: 316px minmax(0, 1fr) 336px;
  grid-template-areas: "panel stage right";
}
.panel { grid-area: panel; position: relative; background: var(--surface); border-right: 1px solid var(--border); overflow-y: auto; padding: 14px; -webkit-overflow-scrolling: touch; } /* position:relative：面板内 opacity:0 的绝对定位 checkbox/radio 以面板为包含块才会被滚动盒裁剪，否则逃逸撑高 html 并可被焦点滚动露出（下方空白 bug 根因） */
.stage { grid-area: stage; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
/* 右栏：上固定导出设置，下为可独立滚动的切片结果 */
.panel-right {
  grid-area: right; display: block; overflow-y: auto;
  background: var(--surface); border-right: none; border-left: 1px solid var(--border);
  padding: 14px 0; -webkit-overflow-scrolling: touch;
} /* v59：右栏合并单面板（导出在上、预览在下），整列滚动替代 Tab+内滚 */
.panel-right > #rightBlocks { flex: none; }
.panel-right .col-head { margin: 0 14px 12px; }
.panel-right .panel-block { flex: none; margin-left: 14px; margin-right: 14px; }
.panel-right .results {
  overflow: visible;
  margin: 0 14px 14px; padding: 0;
  border: 1px solid var(--border); border-radius: 12px; background: var(--surface);
} /* v59：结果框卡片化（与导出设置各卡同边框/圆角规格），并常驻显示空态 */
.panel-right .results[hidden] { display: none; }
/* 结果区滚动时标题栏（含 ZIP 下载）吸顶 */
.panel-right .res-head {
  position: sticky; top: 0; z-index: 2; margin: 0 0 10px; padding: 10px 14px;
  background: var(--surface); border-bottom: 1px solid var(--border);
  border-radius: 11px 11px 0 0; /* v61：贴合结果卡 12px 外圆角（内缘=12-1px 边框），顶角不再露方角 */
}
.panel-right .res-grid { padding: 0 12px 12px; }
.panel-right .res-empty { grid-column: 1 / -1; padding: 22px 12px; text-align: center; color: var(--text-3); font-size: 13px; line-height: 1.6; border: 1px dashed var(--border-strong); border-radius: 9px; margin: 0 2px 4px; }
/* 列标题 */
.col-head { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 800; color: var(--text-2); letter-spacing: .2px; }
.canvas-wrap { flex: 1; position: relative; min-height: 0; background:
  repeating-conic-gradient(#eef1f6 0% 25%, #f7f9fc 0% 50%) 50% / 22px 22px; overflow: hidden; }
#previewCanvas { position: absolute; inset: 0; touch-action: none; cursor: crosshair; }
.panel-block { padding: 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 12px; background: var(--surface); }
.lbl { font-size: 13px; font-weight: 700; color: var(--text-2); margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; }
.lbl span { color: var(--accent); font-variant-numeric: tabular-nums; }
.mode-tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.mtab { flex: 1 1 auto; min-height: 40px; padding: 8px 10px; border: 1px solid var(--border-strong); background: var(--surface-2); border-radius: 9px; font-size: 13.5px; font-weight: 700; color: var(--text-2); cursor: pointer; white-space: nowrap; }
.mtab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.mtab:hover:not(.active) { border-color: var(--accent); color: var(--accent); }
.hint { font-size: 12px; color: var(--text-3); margin-top: 8px; line-height: 1.5; }
.tpl-legend { margin-top: 4px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 11px; color: var(--text-3); opacity: .92; word-break: break-word; }
.preset-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.preset { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 8px 4px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface-2); cursor: pointer; font-size: 11px; color: var(--text-2); font-weight: 600; min-height: 62px; }
.preset.active { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.preset .pg { display: grid; gap: 1.5px; width: 30px; height: 30px; }
.preset .pg i { background: currentColor; opacity: .5; border-radius: 1px; }
.field-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.field-row .lbl { margin-bottom: 0; }
.stepper { display: flex; align-items: center; border: 1px solid var(--border-strong); border-radius: 9px; overflow: hidden; }
.stepper button { width: 38px; height: 40px; border: none; background: var(--surface-2); font-size: 20px; cursor: pointer; color: var(--text-2); }
.stepper button:active { background: var(--accent-soft); color: var(--accent); }
.stepper input { width: 52px; height: 40px; border: none; text-align: center; font-size: 16px; font-weight: 700; color: var(--text); background: var(--surface); -moz-appearance: textfield; }
.stepper input::-webkit-outer-spin-button, .stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.switch-row { display: flex; align-items: center; gap: 10px; cursor: pointer; font-weight: 700; font-size: 14px; color: var(--text); }
.switch-row input { position: absolute; opacity: 0; width: 0; height: 0; }
.sw { width: 42px; height: 24px; border-radius: 999px; background: var(--border-strong); position: relative; transition: background .2s; flex: none; }
.sw::after { content: ""; position: absolute; width: 18px; height: 18px; border-radius: 50%; background: #fff; top: 3px; left: 3px; transition: transform .2s; box-shadow: 0 1px 2px rgba(0,0,0,.2); }
.switch-row input:checked + .sw { background: var(--accent); }
.switch-row input:checked + .sw::after { transform: translateX(18px); }
.btn-mini { min-height: 34px; padding: 0 12px; border: 1px solid var(--border-strong); background: var(--surface-2); border-radius: 8px; font-size: 13px; font-weight: 600; color: var(--text-2); cursor: pointer; margin-top: 8px; }
.btn-mini:hover { border-color: var(--accent); color: var(--accent); }
.row-btns { display: flex; gap: 8px; margin-top: 10px; } .row-btns .btn-mini { margin-top: 0; }
.shape-pick { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.shp { aspect-ratio: 1; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2); color: var(--text-2); cursor: pointer; display: grid; place-items: center; }
.shp svg { width: 26px; height: 26px; } .shp.active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.fmt-row { display: flex; gap: 8px; }
.chip { flex: 1; min-height: 40px; border: 1px solid var(--border-strong); background: var(--surface-2); border-radius: 9px; font-weight: 700; font-size: 13px; color: var(--text-2); cursor: pointer; }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
input[type="range"] { width: 100%; height: 26px; accent-color: var(--accent); }
.txt { width: 100%; height: 42px; padding: 0 12px; border: 1px solid var(--border-strong); border-radius: 9px; font-size: 16px; color: var(--text); background: var(--surface); }
.txt:focus, .stepper input:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.bg-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.bg-opt { display: inline-flex; align-items: center; gap: 7px; padding: 6px 10px; border: 1px solid var(--border); border-radius: 8px; cursor: pointer; font-size: 13px; }
.bg-opt.active { border-color: var(--accent); background: var(--accent-soft); }
.bg-opt input[type=color] { width: 26px; height: 26px; border: none; background: none; padding: 0; cursor: pointer; }
.bg-opt .chk { width: 16px; height: 16px; border-radius: 4px; border: 2px solid var(--border-strong); display: inline-block; background: repeating-conic-gradient(#cfd8e3 0% 25%, #fff 0% 50%) 50% / 8px 8px; }
.bg-opt input[type=radio] { position: absolute; opacity: 0; }
.bg-opt.active .chk { border-color: var(--accent); }
.panel-actions { background: none; padding: 12px 0 4px; } /* v55：不再 sticky 悬浮盖内容，随面板流排到最下方 */
.btn-primary.block, .panel-actions .btn-primary { width: 100%; height: 48px; border: none; border-radius: 11px; background: var(--accent); color: #fff; font-weight: 800; font-size: 16px; cursor: pointer; box-shadow: 0 6px 16px rgba(59,110,245,.28); }
.btn-primary:hover:not(:disabled) { background: var(--accent-2); }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; box-shadow: none; }

/* stage chrome */
.dropzone { flex: 1; display: grid; place-items: center; padding: 24px; }
.dz-inner { text-align: center; border: 2px dashed var(--border-strong); border-radius: 20px; padding: 48px 36px; background: var(--surface); max-width: 560px; width: 100%; transition: border-color .2s, background .2s; }
.dropzone.over .dz-inner { border-color: var(--accent); background: var(--accent-soft); }
.dz-icon { font-size: 46px; margin-bottom: 8px; }
.dz-title { font-size: 19px; font-weight: 800; }
.dz-sub { color: var(--text-2); font-size: 14px; margin-top: 6px; }
.dz-inner .btn-primary { margin-top: 20px; }
.stage-canvas { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.stage-top { display: flex; align-items: center; gap: 10px; padding: 10px 14px; background: var(--surface); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.imgmeta { font-size: 13px; color: var(--text-2); font-weight: 600; }
.stage-tools { margin-left: auto; display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; }
.tbtn { min-width: 38px; height: 38px; padding: 0 12px; border: 1px solid var(--border-strong); background: var(--surface-2); border-radius: 9px; font-size: 14px; font-weight: 700; color: var(--text-2); cursor: pointer; }
.tbtn:hover { border-color: var(--accent); color: var(--accent); }
.tbtn.danger:hover { border-color: var(--danger); color: var(--danger); }
.stage-bottom { display: flex; align-items: center; gap: 12px; padding: 8px 14px; background: var(--surface); border-top: 1px solid var(--border); }
.badge-count, [data-slicecount] { background: var(--accent-soft); color: var(--accent); font-weight: 800; font-size: 13px; padding: 4px 12px; border-radius: 999px; white-space: nowrap; }
.hint-inline { color: var(--text-3); font-size: 12.5px; }

/* results */
.results { background: var(--surface); border-top: 1px solid var(--border); padding: 12px 14px; max-height: 38vh; overflow-y: auto; }
.res-head { display: flex; align-items: center; gap: 10px 12px; flex-wrap: wrap; margin-bottom: 10px; }
.res-head > span { font-weight: 800; font-size: 15px; min-width: 0; overflow-wrap: anywhere; }
.res-head .btn-primary { margin-left: auto; height: 40px; padding: 0 18px; border: none; border-radius: 10px; background: var(--accent); color: #fff; font-weight: 700; cursor: pointer; font-size: 14px; flex: none; }
.res-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
.res-cell { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--surface-2); }
.res-thumb { aspect-ratio: 1; background-color: #fff; background-size: contain; background-repeat: no-repeat; background-position: center;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16'><rect width='8' height='8' fill='%23eef1f6'/><rect x='8' y='8' width='8' height='8' fill='%23eef1f6'/></svg>"); }
.res-meta { font-size: 11px; color: var(--text-2); padding: 4px 8px 0; text-align: center; }
.res-cell .btn-mini { width: 100%; margin: 6px 0; border-radius: 0; border-left: none; border-right: none; border-bottom: none; }
.res-thumb { cursor: zoom-in; }
.res-btns { display: flex; gap: 6px; padding: 0 6px; }
.res-btns .btn-mini { flex: 1; width: auto; margin: 6px 0; border-radius: 7px; border: 1px solid var(--border-strong); }
.results[hidden] { display: none; }

/* lightbox */
.lightbox { position: fixed; inset: 0; z-index: 300; background: rgba(15,20,30,.62); display: grid; place-items: center; padding: 20px; }
.lb-body { background: var(--surface); border-radius: 16px; max-width: min(92vw, 900px); max-height: 88vh; display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.4); }
.lb-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.lb-title { font-weight: 800; }
.lb-nav { display: flex; gap: 6px; }
.lb-nav .tbtn:disabled { opacity: .4; cursor: default; }
.lb-imgwrap { flex: 1; min-height: 0; overflow: auto; padding: 16px; display: grid; place-items: center; background: repeating-conic-gradient(#eef1f6 0% 25%, #f7f9fc 0% 50%) 50% / 22px 22px; }
.lb-imgwrap img { max-width: 100%; max-height: 68vh; object-fit: contain; border-radius: 6px; }
.lb-foot { display: flex; gap: 10px; justify-content: flex-end; align-items: center; padding: 12px 16px; border-top: 1px solid var(--border); }
.lb-size { margin-right: auto; color: var(--text-2); font-size: 13px; font-weight: 600; }
.lb-foot .btn-primary { height: 40px; padding: 0 18px; border: none; border-radius: 10px; background: var(--accent); color: #fff; font-weight: 700; cursor: pointer; }
.lb-foot .btn-mini { margin: 0; }
/* v63 裁剪弹窗 */
.crop-body { width: min(94vw, 880px); }
.crop-stage { padding: 10px; background: repeating-conic-gradient(#eef1f6 0% 25%, #f7f9fc 0% 50%) 50% / 22px 22px; }
#crpCanvas { display: block; width: 100%; height: 420px; cursor: grab; touch-action: none; border-radius: 8px; }
.crop-ctrls { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; padding: 12px 16px; border-top: 1px solid var(--border); font-size: 13px; font-weight: 600; color: var(--text-2); }
.crop-size, .crop-zoom, .crop-deg { display: flex; align-items: center; gap: 6px; }
.crop-size input[type="number"] { width: 74px; height: 30px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text); padding: 0 8px; font-size: 13px; font-weight: 600; }
.crop-rect { color: var(--text-3); font-weight: 700; margin-left: 4px; }
.crop-zoom input[type="range"] { width: 140px; }
.crop-deg input[type="range"] { width: 140px; }
.crop-zoom .tbtn { width: 30px; height: 30px; }
.crop-xf { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.crop-xf .btn-mini { margin: 0; }
@media (max-width: 860px) { #crpCanvas { height: 54vw; min-height: 250px; } .crop-xf { margin-left: 0; } }
html[data-theme="dark"] .crop-stage { background: repeating-conic-gradient(#1b2330 0% 25%, #212b3b 0% 50%) 50% / 22px 22px; }
html[data-theme="dark"] .crop-size input[type="number"] { background: #1a2230; border-color: #2a3547; color: #e6ebf5; }

/* help overlay */
.helpbox { position: fixed; inset: 0; z-index: 320; background: rgba(15,20,30,.55); display: grid; place-items: center; padding: 20px; }
.hb-body { background: var(--surface); border-radius: 16px; max-width: min(92vw, 560px); max-height: 86vh; overflow: auto; box-shadow: 0 20px 60px rgba(0,0,0,.4); }
.hb-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.hb-head h3 { margin: 0; font-size: 17px; }
.hb-body .tbtn { min-width: 34px; height: 34px; }
.hb-sec { padding: 14px 18px; border-bottom: 1px solid var(--border); }
.hb-sec h4 { margin: 0 0 10px; font-size: 14px; color: var(--text-2); }
.kb-row { display: flex; align-items: center; gap: 12px; padding: 6px 0; font-size: 14px; color: var(--text); }
.kb-key { flex: none; min-width: 84px; text-align: center; padding: 4px 10px; background: var(--surface-2); border: 1px solid var(--border-strong); border-radius: 7px; font-weight: 700; font-size: 12.5px; color: var(--text-2); }
.hb-note { padding: 14px 18px; font-size: 13.5px; color: var(--text-2); }

/* toast */
.toast { position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%) translateY(20px); background: var(--text); color: #fff; padding: 12px 22px; border-radius: 12px; font-size: 14.5px; font-weight: 600; opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s; z-index: 200; max-width: 90vw; text-align: center; box-shadow: 0 8px 30px rgba(0,0,0,.25); }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { background: var(--danger); }

/* 404 */
.notfound { text-align: center; padding: 100px 20px; }
.notfound h1 { font-size: 64px; color: var(--accent); margin: 0; }

/* ── Responsive ── */
/* 中等宽度：右栏改为预览下方的横向条带，仍保持信息不丢 */
@media (max-width: 1240px) {
  .tool-main {
    grid-template-columns: 288px minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr) minmax(150px, 38vh);
    grid-template-areas:
      "panel stage"
      "right right";
  }
  .panel-right { border-left: none; border-top: 1px solid var(--border); }
  /* 右栏不再是独立列宽，取消结果区的负边距出血，避免横向溢出 */
  .panel-right .results { margin: 0; }
  /* 全宽条带下限制格式 chip / 命名输入的伸展宽度 */
  .panel-right .fmt-row { max-width: 460px; }
  .panel-right .txt { max-width: 460px; }
}
@media (max-width: 1024px) {
  .g-3 { grid-template-columns: repeat(2, 1fr); }
  .g-4 { grid-template-columns: repeat(2, 1fr); }
  .tool-main { grid-template-columns: 268px minmax(0, 1fr); }
}
@media (max-width: 860px) {
  .nav-toggle { display: grid; }
  .nav-links { position: absolute; top: var(--header-h); left: 0; right: 0; background: var(--surface); flex-direction: column; align-items: stretch; padding: 12px 16px; gap: 6px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); display: none; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; }
  .site-header .inner { position: relative; }
}
@media (max-width: 760px) {
  /* 工具页在移动端改为自然滚动，保证预览画布始终可见 */
  body[data-app="tool"] { overflow: auto; height: auto; display: block; }
  .tool-shell { height: auto; min-height: 100vh; min-height: 100dvh; }
  .tool-main { display: flex; flex-direction: column; }
  .stage { min-height: 0; order: 1; }
  .panel { order: 2; }
  .panel-right { order: 3; max-height: none; overflow: visible; padding: 14px; border-left: none; border-top: 1px solid var(--border); }
  .panel-right .col-head, .panel-right .panel-block { margin-left: 0; margin-right: 0; }
  .stage-canvas { min-height: 0; }
  .canvas-wrap { height: 52vh; min-height: 260px; flex: none; }
  #previewCanvas { position: absolute; }
  .results, .panel-right .results { max-height: none; overflow: visible; margin: 0; }
  .panel { border-right: none; border-top: 1px solid var(--border); max-height: none; overflow: visible; }
  .g-3, .g-4, .g-2 { grid-template-columns: 1fr; }
  .hero { padding: 40px 0 28px; }
  .site-footer .cols { grid-template-columns: 1fr; }
  .preset-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }
@media (prefers-contrast: more) {
  :root { --border: #9aa6b6; --border-strong: #64707f; --text-2: #3a434f; --text-3: #4a5361; }
  .mtab, .chip, .btn-mini, .tbtn, .preset, .txt, .stepper { border-width: 1.5px; }
}

/* ── 美化 / 可访问性叠加层（v31） ── */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.brand { min-height: 40px; padding: 5px 0; }
.site-footer a { display: inline-block; padding: 4px 0; }
.tbtn { transition: background .15s, border-color .15s, color .15s, transform .1s; }
.tbtn:hover { background: var(--accent-soft); }
.tbtn:active { transform: translateY(1px); }
.tbtn:disabled { opacity: .45; cursor: default; }
.tbtn:disabled:hover { background: var(--surface-2); border-color: var(--border-strong); color: var(--text-2); }
.mtab, .chip, .btn-mini, .preset { transition: background .15s, border-color .15s, color .15s; }
.res-thumb { box-shadow: var(--shadow-sm); transition: transform .15s, box-shadow .15s; }
.res-cell:hover .res-thumb { transform: scale(1.03); box-shadow: var(--shadow); }
.res-head .btn-primary { box-shadow: 0 4px 12px rgba(58,104,236,.24); }
.panel-block { transition: border-color .15s; }
@media (max-width: 760px) { .site-footer a { padding: 9px 0; } }
/* 强调色文字落在浅色 / 柔和底上时改用更深的 accent-2，保证 ≥4.5:1 */
[data-slicecount], .preset.active, .badge b { color: var(--accent-2); }

/* ── 结构与美化叠加层（v33） ── */
/* 锚点跳转不被吸顶 header 遮挡 */
[id] { scroll-margin-top: calc(var(--header-h) + 14px); }
/* 卡片轻微悬停提升 */
.card { transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease; }
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--border-strong); }
/* 404 页排版 */
.notfound { text-align: center; padding: 72px 20px 96px; }
.nf-sep { display: inline-block; margin: 0 10px; color: var(--text-3); font-weight: 400; }
.nf-en { color: var(--text-3); font-weight: 600; }
.nf-desc { color: var(--text-2); font-size: 16px; margin: 0 auto 26px; max-width: 620px; }
.nf-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 22px; }
.nf-links { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; color: var(--text-3); font-size: 14px; }
.nf-links a { color: var(--accent-2); font-weight: 600; }
.nf-links a:hover { text-decoration: underline; }
/* 404 无 JS：静态导航在窄屏也要可见（常规导航靠 JS 展开） */
@media (max-width: 860px) {
  .nav-links[data-static-nav] { display: flex !important; position: static; flex-direction: row; flex-wrap: wrap; gap: 4px 10px; padding: 0; border: none; box-shadow: none; background: none; margin-left: auto; }
  .nav-links[data-static-nav] a { padding: 6px 8px; font-size: 14px; }
}

/* ── 移动端安全区叠加层（v34：viewport-fit=cover 配套） ── */
/* 刘海 / 圆角 / 底部小黑条：吸顶 header、吸底操作栏、页脚与新窗口容器统一避让 */
@supports (padding: max(0px)) {
  .site-header .inner {
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
  }
  .site-footer {
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
    padding-bottom: calc(30px + env(safe-area-inset-bottom));
  }
  .panel-actions { padding-bottom: calc(4px + env(safe-area-inset-bottom)); }
  .tool-shell { padding-left: env(safe-area-inset-left); padding-right: env(safe-area-inset-right); }
  .notfound { padding-left: max(20px, env(safe-area-inset-left)); padding-right: max(20px, env(safe-area-inset-right)); padding-bottom: calc(96px + env(safe-area-inset-bottom)); }
}
/* 无 safe-area 支持时的降级：至少保证左右留白 */
@supports not (padding: max(0px)) {
  .site-header .inner { padding-left: 20px; padding-right: 20px; }
}

/* ── 空状态上传卡片美化（v39：SVG 图标 + 按钮规范化 + 提示层次） ── */
.dz-inner {
  padding: 44px 32px 34px; border-radius: 24px;
  background: linear-gradient(180deg, var(--surface) 58%, var(--surface-2));
  box-shadow: var(--shadow-sm);
}
.dropzone:not(.over) .dz-inner:hover { border-color: var(--accent); }
.dz-icon {
  width: 86px; height: 86px; margin: 0 auto 14px; border-radius: 22px;
  background: var(--accent-soft); display: grid; place-items: center;
  box-shadow: inset 0 0 0 1px rgba(59,110,245,.10);
  transition: transform .2s ease;
}
.dz-icon svg { width: 48px; height: 48px; display: block; }
.dropzone.over .dz-icon { transform: scale(1.08); }
.dz-title { font-size: 20px; letter-spacing: .2px; }
.dz-sub { max-width: 420px; margin-left: auto; margin-right: auto; }
.dz-inner .dz-paste { margin-top: 16px; }
.dz-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 20px; }
.dz-actions .btn { height: 46px; padding: 0 26px; border-radius: 11px; font-size: 15px; }
.dz-actions .btn-ghost { font-weight: 600; }
.dz-kbd {
  display: inline-flex; align-items: center; margin-top: 12px;
  padding: 7px 14px; border: 1px solid var(--border); border-radius: 999px;
  background: var(--surface-2); color: var(--text-3);
  font-size: 12.5px; font-weight: 600;
}
.dropzone.over .dz-inner { border-style: solid; box-shadow: 0 10px 30px rgba(59,110,245,.14); }
@media (max-width: 760px) {
  .dz-inner { padding: 32px 18px 26px; border-radius: 18px; }
  .dz-icon { width: 72px; height: 72px; border-radius: 18px; }
  .dz-icon svg { width: 40px; height: 40px; }
  .dz-actions .btn { flex: 1 1 auto; min-width: 148px; }
}

/* ── 分割结果区美化（v41：标题/统计分层 + 清单小钮 + ZIP 通栏 + 缩略图序号徽章） ── */
.res-head { display: block; }
.res-title-row { display: flex; align-items: center; gap: 8px; min-width: 0; }
.res-title-row [data-restitle] { flex: none; font-size: 14px; }
.res-title-row .res-stat {
  flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  padding: 3px 9px; border-radius: 999px; background: var(--surface-2);
  font-size: 11.5px; font-weight: 700; color: var(--text-3); text-align: center;
}
.res-title-row .btn-ghost {
  flex: none; height: 28px; padding: 0 11px; border-radius: 8px;
  font-size: 12.5px; font-weight: 600; gap: 0; white-space: nowrap;
}
.res-head .btn-primary { width: 100%; margin: 10px 0 0; height: 42px; border-radius: 10px; }
.res-thumb { position: relative; }
.res-thumb .res-n {
  position: absolute; top: 6px; left: 6px; min-width: 20px; height: 20px; padding: 0 6px;
  border-radius: 999px; background: rgba(13,20,38,.72); color: #fff;
  font-size: 11px; font-weight: 800; font-style: normal; line-height: 20px; text-align: center;
  backdrop-filter: blur(2px);
}
.res-cell { transition: border-color .15s, box-shadow .15s; }
.res-cell:hover { border-color: var(--accent); box-shadow: 0 4px 14px rgba(59,110,245,.13); }
.res-cell:hover .res-n { background: var(--accent); }

/* ── 工具页排版布局美化（v42：底色分层 / 卡片轻量化 / 列标题分隔线 / 细滚动条 / 控件统一） ── */
:root { --panel-bg: #f2f5fa; }
/* 左右栏浅灰蓝底，白色卡片浮出层次（中栏画布区保持棋盘格） */
.panel, .panel-right { background: var(--panel-bg); }
.panel-right .results { background: var(--surface); }
/* 卡片轻量化：更柔的边 + 微投影 + 统一圆角 */
.panel-block { border-color: #e8edf5; border-radius: 12px; box-shadow: 0 1px 2px rgba(20,30,50,.05); }
/* 同卡多字段（行数/列数、宽高）：虚线分隔，减少碎片盒子 */
.stack-2 .field-row + .field-row { margin-top: 11px; padding-top: 11px; border-top: 1px dashed var(--border); }
/* 列标题：渐隐分隔线延伸（v44 起移除编号徽章，仅保留分隔线） */
.col-head { letter-spacing: .3px; }
.col-head::after { content: ""; flex: 1 1 auto; height: 1px; margin-left: 2px; background: linear-gradient(90deg, var(--border-strong), transparent); }
/* 细滚动条：不与卡片内容抢空间 */
.panel, .panel-right .results { scrollbar-width: thin; scrollbar-color: #c6d2e2 transparent; }
.panel::-webkit-scrollbar, .panel-right .results::-webkit-scrollbar { width: 9px; }
.panel::-webkit-scrollbar-thumb, .panel-right .results::-webkit-scrollbar-thumb { background: #c6d2e2; border-radius: 99px; border: 2px solid var(--panel-bg); }
.panel-right .results::-webkit-scrollbar-thumb { border-color: var(--surface); }
.panel::-webkit-scrollbar-track, .panel-right .results::-webkit-scrollbar-track { background: transparent; }
/* 吸底主操作：与栏底色衔接，按钮更醒目 */
.panel-actions { padding: 16px 0 8px; } /* v55：去悬浮后不再需要渐变遮底 */
.panel-actions .btn-primary { height: 50px; border-radius: 12px; font-size: 16px; letter-spacing: .3px; box-shadow: 0 8px 20px rgba(59,110,245,.32); }
/* 控件统一圆角与悬停细节 */
.mtab, .chip, .preset, .stepper, .shp, .txt { border-radius: 10px; }
.mtab.active { box-shadow: 0 3px 10px rgba(59,110,245,.25); }
.mtab:hover:not(.active) { background: var(--surface); }
.preset:hover:not(.active) { background: var(--surface); border-color: var(--border-strong); }
.preset.active { box-shadow: inset 0 0 0 1px var(--accent), 0 2px 8px rgba(59,110,245,.14); }
.chip.active { box-shadow: 0 3px 10px rgba(59,110,245,.25); }
.stepper button { transition: background .15s, color .15s; }
.stepper button:hover { background: var(--accent-soft); color: var(--accent); }
/* 画布区一圈极浅内描边，与左右栏边界呼应 */
.canvas-wrap { box-shadow: inset 0 0 0 1px var(--border); }

/* ── 空状态上传卡片精修（v43：修按钮错位 + 视觉层次增强） ── */
/* 修复：v39 按钮挪入 .dz-actions 后，老规则 .dz-inner .btn-primary{margin-top:20px} 仍生效，
   导致主按钮比示例按钮低 20px（截图中两钮不齐的根因） */
.dz-inner .dz-actions .btn-primary { margin-top: 0; }
/* 卡片：细圆点网格底纹 + 柔和顶部光晕，提升质感 */
.dz-inner {
  position: relative; overflow: hidden;
  background:
    radial-gradient(52% 68% at 50% 0%, var(--accent-soft) 0%, transparent 72%),
    radial-gradient(var(--border) 1px, transparent 1.4px) 0 0 / 22px 22px,
    linear-gradient(180deg, var(--surface) 46%, var(--surface-2));
}
.dz-inner > * { position: relative; z-index: 1; }
/* 图标：白芯渐变底 + 外圈柔光，悬停轻浮动 */
.dz-icon {
  background: linear-gradient(180deg, #fff 30%, var(--accent-soft));
  box-shadow: inset 0 0 0 1px rgba(59,110,245,.14), 0 10px 24px rgba(59,110,245,.16);
  transition: transform .25s ease, box-shadow .25s ease;
}
.dropzone:not(.over) .dz-inner:hover .dz-icon {
  transform: translateY(-4px);
  box-shadow: inset 0 0 0 1px rgba(59,110,245,.18), 0 14px 30px rgba(59,110,245,.22);
}
/* 标题/副标题层次 */
.dz-title { font-size: 21px; font-weight: 800; }
.dz-sub { color: var(--text-3); font-size: 13.5px; }
.dz-inner .dz-paste { margin-top: 14px; font-size: 12.5px; color: var(--text-3); opacity: .92; }
/* 按钮组：主按钮渐变 + 悬停上浮；示例按钮描边白底同高 */
.dz-actions { margin-top: 22px; }
.dz-actions .btn { box-shadow: var(--shadow-sm); }
.dz-actions .btn-primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  border: none; font-weight: 800; letter-spacing: .3px;
  box-shadow: 0 8px 20px rgba(59,110,245,.30);
  transition: transform .15s ease, box-shadow .2s ease, background .2s;
}
.dz-actions .btn-primary:hover {
  background: linear-gradient(180deg, #4674f2, var(--accent-2));
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(59,110,245,.36);
}
.dz-actions .btn-primary:active { transform: translateY(0); }
.dz-actions .btn-ghost { transition: transform .15s ease, border-color .2s, color .2s, box-shadow .2s; }
.dz-actions .btn-ghost:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
/* 快捷键胶囊：微投影与卡片区隔 */
.dz-kbd { box-shadow: var(--shadow-sm); }

/* ── 面板双 Tab（v45：左栏 常用/高级 · 右栏 切片预览/导出设置） ── */
.tab-bar { display: flex; gap: 4px; background: var(--surface-2); padding: 4px; border-radius: 11px; margin: 2px 0 12px; }
.tab-btn { flex: 1 1 0; height: 34px; border: none; background: transparent; border-radius: 8px; font: inherit; font-size: 13px; font-weight: 700; color: var(--text-2); cursor: pointer; transition: background .15s, color .15s, box-shadow .2s; white-space: nowrap; }
.tab-btn:hover:not(.active):not(:disabled) { color: var(--text); background: rgba(255,255,255,.6); }
.tab-btn.active { background: var(--surface); color: var(--accent); box-shadow: 0 2px 8px rgba(20,30,50,.10); }
.tab-btn:disabled { opacity: .45; cursor: not-allowed; }
.tab-pane[hidden] { display: none; }
.tab-pane > .panel-block:first-child { margin-top: 0; }
.tab-pane .results { margin-top: 0; }

/* ── 整页布局精修（v46：右栏预览满高 · 切片单元紧凑化 · 舞台工具条分组） ── */
/* 右栏：预览 Tab 填满面板剩余高度（原 results 38vh 上限 → 弹性满高，一屏可见更多切片） */
.panel-right > #rightBlocks { flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; }
#rightBlocks .tab-pane:not([hidden]) { flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; }
.panel-right .results { flex: 1 1 auto; max-height: none; }
.panel-right .res-grid { align-content: start; }
/* 切片单元：footer 单行（尺寸 + 两枚图标钮），节省每片 ~26px 高度 */
.res-foot { display: flex; align-items: center; gap: 6px; padding: 5px 7px; }
.res-name { padding: 6px 7px 0; font-size: 11.5px; color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; unicode-bidi: isolate; }
.res-foot .res-meta { flex: 1 1 auto; min-width: 0; padding: 0; text-align: left; font-variant-numeric: tabular-nums; }
.res-cell .res-btns { padding: 0; gap: 4px; }
.res-cell .res-btns .btn-mini { flex: none; width: 26px; height: 26px; min-height: 0; margin: 0; padding: 0; border-radius: 7px; display: inline-flex; align-items: center; justify-content: center; color: var(--text-2); }
.res-cell .res-btns .btn-mini:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
/* ZIP 主按钮：渐变 + 悬停上浮 */
.res-head .btn-primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 16px rgba(59,110,245,.28);
  transition: transform .15s ease, box-shadow .2s ease;
}
.res-head .btn-primary:hover { transform: translateY(-1px); box-shadow: 0 9px 20px rgba(59,110,245,.34); }
.res-head .btn-primary:active { transform: translateY(0); }
/* 舞台工具条：统一 34px 紧凑尺寸 + 功能分组分隔线 */
.stage-tools .tbtn { height: 34px; min-width: 34px; padding: 0 10px; border-radius: 9px; font-size: 13.5px; }
.stage-tools .tbtn[data-act="undo"], .stage-tools .tbtn[data-act="redo"], .stage-tools .tbtn[data-act="tint"],
.stage-tools .tbtn[data-act="reset-cuts"], .stage-tools .tbtn[data-act="help"],
.stage-tools .tbtn[data-act="xform"],
.stage-tools .tbtn[data-act="zoomout"], .stage-tools .tbtn[data-act="zoomin"] { width: 34px; padding: 0; }
.stage-tools .tbtn[data-act="tint"], .stage-tools .tbtn[data-act="zoomout"], .stage-tools .tbtn[data-act="pick"] { margin-left: 10px; position: relative; }
.stage-tools .tbtn[data-act="tint"]::before, .stage-tools .tbtn[data-act="zoomout"]::before, .stage-tools .tbtn[data-act="pick"]::before {
  content: ""; position: absolute; left: -6px; top: 7px; bottom: 7px; width: 1px; background: var(--border);
}
/* 图片元信息胶囊化 */
.imgmeta { background: var(--surface-2); border-radius: 999px; padding: 5px 12px; font-size: 12.5px; font-variant-numeric: tabular-nums; }
/* 舞台顶/底条与画布衔接微调 */
.stage-top { padding: 8px 12px; }
.stage-bottom { padding: 7px 12px; }
/* 左栏卡片间距统一收紧密 */
.panel .panel-block { margin-bottom: 10px; }
.panel .panel-actions { margin-top: 2px; }

/* ── v47 外观切换按钮（图标由 [data-theme] 纯 CSS 切换，避免首屏闪错图标） ── */
.theme-btn { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; padding: 0; border: 1px solid var(--border-strong); background: var(--surface); border-radius: 50%; color: var(--text-2); cursor: pointer; transition: border-color .15s, color .15s, background .15s; } /* v59：圆形主题钮（用户点名参考样式） */
.theme-btn:hover { border-color: var(--accent); color: var(--accent); }
.theme-btn .ti { width: 18px; height: 18px; display: none; }
.theme-btn .ti-light, .theme-btn .ti-dark, .theme-btn .ti-monitor { display: none; }
.theme-btn .ti-light { display: block; }                                   /* 默认（浅色态 / 无属性兜底） */
html[data-theme="light"] .theme-btn .ti-light { display: block; }
html[data-theme="dark"] .theme-btn .ti-light { display: none; }            /* 互斥：深色态只留月亮 */
html[data-theme="dark"] .theme-btn .ti-dark { display: block; }
/* 三态图标：跟随系统时显示显示器（选择器需盖过上面的 html[data-theme=dark] 分支） */
html[data-theme] .theme-btn[data-theme-state="auto"] .ti-monitor { display: block; }
html[data-theme] .theme-btn[data-theme-state="auto"] .ti-light, html[data-theme] .theme-btn[data-theme-state="auto"] .ti-dark { display: none; } /* 特异性须压过 html[data-theme=light] .theme-btn .ti-light（否则 auto 态太阳与显示器并显） */

/* ── v47 深色模式细节覆盖（只命中深色态，浅色态规则一律不动） ── */
/* 卡片描边：v42 写死了浅色 #e8edf5 */
html[data-theme="dark"] .panel-block { border-color: #2a3547; }
html[data-theme="dark"] .panel-right .results { border-color: #2a3547; }
html[data-theme="dark"] .panel-right .res-empty { border-color: #2a3547; }
/* 细滚动条滑块：v42 写死了浅蓝灰 #c6d2e2 */
html[data-theme="dark"] .panel::-webkit-scrollbar-thumb,
html[data-theme="dark"] .panel-right .results::-webkit-scrollbar-thumb { background: #3d4b60; }
/* 上传图标：v43 写死了白芯渐变 */
html[data-theme="dark"] .dz-icon { background: linear-gradient(180deg, #202a3a 30%, var(--accent-soft)); }
/* 提示条：底色沿用 --text（深色态变亮），文字需跟着反向取 --bg */
html[data-theme="dark"] .toast { color: var(--d-bg); }
/* 实心强调块统一改用 --solid，保证白字 ≥4.5:1（原 var(--accent) 在深色下仅 3.5:1） */
html[data-theme="dark"] .btn-primary,
html[data-theme="dark"] .nav-links a.cta,
html[data-theme="dark"] .step-num,
html[data-theme="dark"] .mtab.active,
html[data-theme="dark"] .chip.active,
html[data-theme="dark"] .res-head .btn-primary,
html[data-theme="dark"] .lb-foot .btn-primary { background: var(--solid); }
html[data-theme="dark"] .btn-primary:hover,
html[data-theme="dark"] .nav-links a.cta:hover,
html[data-theme="dark"] .mtab.active:hover,
html[data-theme="dark"] .res-head .btn-primary:hover { background: var(--solid-2); }
html[data-theme="dark"] .res-head .btn-primary { background-image: linear-gradient(180deg, var(--solid), var(--solid-2)); }
html[data-theme="dark"] .res-cell:hover .res-n { background: var(--solid); }
html[data-theme="dark"] .res-cell:hover { box-shadow: 0 4px 14px rgba(0,0,0,.35); }
html[data-theme="dark"] .stepper button:hover { color: var(--d-accent); }
html[data-theme="dark"] .dz-inner, html[data-theme="dark"] .canvas-wrap { box-shadow: inset 0 0 0 1px #2a3547; }
html[data-theme="dark"] .toast { box-shadow: 0 8px 30px rgba(0,0,0,.55); }

/* ── v49 面板 Tab 美化（增量覆盖 v45 基础样式；左「分割设置」/右「导出与结果」共用） ── */
.tab-bar {
  border-radius: 12px;
  box-shadow: inset 0 1px 3px rgba(15,25,45,.07), inset 0 0 0 1px var(--border);
}
.tab-btn {
  border-radius: 9px;
  font-size: 13.5px;
  letter-spacing: .02em;
  transition: background .18s ease, color .18s ease, box-shadow .22s ease, transform .18s ease;
}
.tab-btn:hover:not(.active):not(:disabled) { color: var(--text); background: rgba(59,110,245,.07); }
.tab-btn:active:not(:disabled) { transform: scale(.97); }
.tab-btn.active {
  color: #fff;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  box-shadow: 0 3px 10px rgba(59,110,245,.32), inset 0 1px 0 rgba(255,255,255,.22);
}
.tab-btn.active:hover:not(:disabled) { color: #fff; }
.tab-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
/* 深色：--d-accent 上白字仅 3.5:1，改用 v47 的 --solid（#3a63d8，≈5.9:1） */
html[data-theme="dark"] .tab-btn.active {
  background: linear-gradient(180deg, var(--solid), var(--solid-2));
  box-shadow: 0 3px 10px rgba(0,0,0,.40), inset 0 1px 0 rgba(255,255,255,.14);
}
html[data-theme="dark"] .tab-btn:hover:not(.active):not(:disabled) { background: rgba(255,255,255,.06); }
html[data-theme="dark"] .tab-bar { box-shadow: inset 0 1px 3px rgba(0,0,0,.35), inset 0 0 0 1px var(--border); }


/* ── v53 面板头部美化：用户要求先暂停，待合并布局调整后再恢复，保留 v49 Tab 美化为基线 ── */

/* ── v55 分割模式一行两个（v56：常用宫格并入网格分割后共 4 枚，2/2 满行，自由分割不再独占行） ── */
.mode-tabs.modes2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.mode-tabs.modes2 .mtab { flex: none; width: auto; }

/* ── v65 触屏命中区（WCAG 2.5.5）：粗指针下小按钮升到 ≥44px；语言/主题圆钮为 v60 点名的 38px 同规格视觉，不动 ── */
@media (pointer: coarse) {
  .tbtn { min-width: 44px; height: 44px; }
  .btn-mini { min-height: 44px; }
  .nav-toggle { width: 44px; height: 44px; }
  .crop-zoom .tbtn { width: 44px; height: 44px; }
  .faq-q { min-height: 44px; }
}