:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f1f3f9;
  --text: #111827;
  --muted: #5b6475;
  --border: #e3e6ef;
  --primary: #5b4bdb;
  --primary-hover: #4a3bc6;
  --primary-soft: rgba(91, 75, 219, 0.1);
  --ok: #15803d;
  --info: #2563eb;
  --warn: #b45309;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 4px 16px rgba(16, 24, 40, 0.06);
  --checker: repeating-conic-gradient(#e9ebf2 0% 25%, #ffffff 0% 50%) 50% / 16px 16px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1220;
    --surface: #171a2b;
    --surface-2: #1f2337;
    --text: #e8eaf2;
    --muted: #9aa2b8;
    --border: #2b3049;
    --primary: #8b7bff;
    --primary-hover: #a094ff;
    --primary-soft: rgba(139, 123, 255, 0.15);
    --ok: #4ade80;
    --info: #60a5fa;
    --warn: #fbbf24;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.25);
    --checker: repeating-conic-gradient(#2a2e44 0% 25%, #1f2337 0% 50%) 50% / 16px 16px;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }

/* 顶部导航 */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 10px 24px; padding-top: 14px; padding-bottom: 14px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand img { width: 32px; height: 32px; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 20px; font-size: 14px; }
.nav a { color: var(--muted); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--primary); text-decoration: none; }
.soon { font-size: 11px; padding: 0 6px; border-radius: 8px; background: var(--surface-2); color: var(--muted); margin-left: 4px; vertical-align: 1px; }
.nav .disabled { color: var(--muted); opacity: 0.7; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid transparent; border-radius: 10px; padding: 11px 20px;
  font: inherit; font-weight: 600; cursor: pointer;
  background: var(--primary); color: #fff; transition: background 0.15s;
}
.btn:hover { background: var(--primary-hover); text-decoration: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 8px; }
.link-btn { border: 0; background: none; color: var(--primary); cursor: pointer; font: inherit; font-size: 13px; padding: 0; }

/* 首页 */
.hero { text-align: center; padding: 72px 0 48px; }
.hero h1 { font-size: clamp(30px, 5.5vw, 46px); line-height: 1.25; margin: 0 0 16px; }
.hero p { font-size: clamp(16px, 2.3vw, 19px); color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.hero .badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.badge { font-size: 13px; padding: 4px 12px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); }

.section { padding: 40px 0; }
.section h2 { text-align: center; font-size: clamp(22px, 4vw, 28px); margin: 0 0 8px; }
.section > .container > p.lead { text-align: center; color: var(--muted); margin: 0 auto 28px; max-width: 620px; }

.tool-grid, .feature-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); }
.tool-card, .feature-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.tool-card { display: flex; flex-direction: column; gap: 8px; color: var(--text); }
a.tool-card:hover { text-decoration: none; border-color: var(--primary); }
.tool-card h3, .feature-card h3 { margin: 0; font-size: 18px; }
.tool-card p, .feature-card p { margin: 0; color: var(--muted); font-size: 14px; }
.tool-card .sizes { font-size: 12px; color: var(--muted); margin-top: auto; padding-top: 8px; }
.tool-card.is-soon { opacity: 0.7; box-shadow: none; }
.feature-card .icon { font-size: 26px; }

.faq { max-width: 760px; margin: 0 auto; }
.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 0 20px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; padding: 15px 0; }
.faq details p { margin: 0 0 16px; color: var(--muted); }

/* 页脚 */
.site-footer { border-top: 1px solid var(--border); margin-top: 40px; padding: 28px 0 36px; font-size: 13px; color: var(--muted); text-align: center; }
.site-footer p { margin: 4px 0; }
.site-footer a { color: var(--muted); }

/* 工具页 */
.tool-head { padding: 28px 0 16px; }
.tool-head h1 { margin: 0 0 6px; font-size: clamp(24px, 4vw, 30px); }
.tool-head p { margin: 0; color: var(--muted); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* 开始区：Logo 上传区 + 少量可选字段，不常用的设置收进「更多设置」 */
.start-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px 28px; align-items: start;
}
.start-card.is-single { grid-template-columns: minmax(0, 1fr); }
.start-card > .more-settings { grid-column: 1 / -1; }
@media (max-width: 760px) { .start-card { grid-template-columns: minmax(0, 1fr); padding: 16px; } }

.dropzone {
  display: grid; place-items: center; text-align: center; min-height: 190px; padding: 22px 18px;
  border: 2px dashed var(--border); border-radius: var(--radius); background: var(--surface-2);
  color: var(--muted); cursor: pointer; transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone.is-over { border-color: var(--primary); background: var(--primary-soft); }
.dropzone:has(input:focus-visible) { outline: 2px solid var(--primary); outline-offset: 2px; }
.dropzone strong { display: block; color: var(--text); font-size: 16px; margin: 6px 0 2px; }
.dropzone small { display: block; font-size: 13px; }
.dropzone svg { color: var(--primary); }
.drop-empty { display: block; }
.drop-filled { display: none; align-items: center; gap: 16px; text-align: left; }
.dropzone.has-logo { min-height: 0; place-items: center start; padding: 14px 16px; border-style: solid; }
.dropzone.has-logo .drop-empty { display: none; }
.dropzone.has-logo .drop-filled { display: flex; }
.dropzone.has-logo strong { margin-top: 0; }
.dropzone-sm { min-height: 0; padding: 14px; }
.dropzone-sm strong { font-size: 14px; margin: 0; }
.dropzone-sm.is-disabled { cursor: not-allowed; opacity: 0.6; }
.drop-actions { display: flex; gap: 12px; margin-top: 8px; min-height: 20px; }

.field { margin-bottom: 14px; }
.field:last-child { margin-bottom: 0; }
.field > label:not(.dropzone), .field-label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.field .hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.field input[type="text"], .field select, .field textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface); color: var(--text); font: inherit; font-size: 14px;
}
.field textarea { resize: vertical; min-height: 84px; font-size: 16px; line-height: 1.5; }
.field input[type="file"] { max-width: 100%; font-size: 13px; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.thumb { width: 56px; height: 56px; flex: none; border-radius: 8px; border: 1px solid var(--border); background: var(--checker); display: grid; place-items: center; overflow: hidden; }
.thumb img { max-width: 100%; max-height: 100%; }
.thumb-lg { width: 72px; height: 72px; padding: 6px; }
.file-btn { position: relative; }
.file-btn:has(input:focus-visible) { outline: 2px solid var(--primary); outline-offset: 2px; }
input[type="color"] { width: 44px; height: 34px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); padding: 2px; cursor: pointer; }
.check-line { display: flex; align-items: center; gap: 8px; font-size: 13px; margin: 6px 0; cursor: pointer; }
.choice { display: flex; gap: 10px; align-items: flex-start; border: 1px solid var(--border); border-radius: 10px; padding: 9px 11px; margin-bottom: 8px; cursor: pointer; }
.choice:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); }
.choice input { margin-top: 4px; }
.choice strong { display: block; font-size: 14px; }
.choice small { color: var(--muted); font-size: 12px; }
.choice-row { display: flex; flex-wrap: wrap; gap: 8px; }
.choice-row .choice { margin: 0; padding: 7px 11px; align-items: center; }
.choice-row .choice input { margin: 0; }
.shot-list { list-style: none; padding: 0; margin: 8px 0 0; font-size: 12px; }
.shot-list li { display: flex; justify-content: space-between; gap: 8px; padding: 4px 0; border-bottom: 1px dashed var(--border); word-break: break-all; }
.note { font-size: 12px; color: var(--warn); margin: 6px 0 0; }

.more-settings { border-top: 1px solid var(--border); padding-top: 14px; }
.more-settings > summary { cursor: pointer; font-weight: 600; font-size: 14px; list-style: none; display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 10px; }
.more-settings > summary::-webkit-details-marker { display: none; }
.more-settings > summary::before { content: "▸"; color: var(--muted); transition: transform 0.15s; }
.more-settings[open] > summary::before { transform: rotate(90deg); }
.more-settings > summary small { font-weight: 400; color: var(--muted); font-size: 13px; }
.more-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr)); gap: 4px 28px; margin-top: 16px; }
.more-grid .field { margin-bottom: 16px; }
.more-footer { display: flex; justify-content: flex-end; border-top: 1px dashed var(--border); padding-top: 12px; margin-top: 4px; }

.results { padding: 24px 0 8px; }
.empty-state { background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius); padding: 44px 24px; text-align: center; color: var(--muted); }
.empty-state strong { display: block; font-size: 17px; color: var(--text); margin-bottom: 6px; }

.out-group { margin-bottom: 28px; }
.out-group h3 { margin: 0; font-size: 17px; }
.out-group > p { margin: 2px 0 12px; font-size: 13px; }
.out-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(min(250px, 100%), 1fr)); }
.out-grid.is-compact { grid-template-columns: repeat(auto-fill, minmax(min(190px, 100%), 1fr)); }
.out-grid.is-wide { grid-template-columns: repeat(auto-fill, minmax(min(420px, 100%), 1fr)); }
@media (max-width: 560px) { .out-grid.is-compact { grid-template-columns: repeat(auto-fill, minmax(min(140px, 100%), 1fr)); } }
.out-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.out-card.has-warn { border-color: color-mix(in srgb, var(--warn) 45%, var(--border)); }
.out-promo { grid-column: 1 / -1; }
.out-preview { border-radius: 8px; background: var(--surface-2); display: grid; place-items: center; padding: 14px; min-height: 80px; overflow: hidden; }
.out-preview.is-alpha { background: var(--checker); }
.preview-grayBg .out-preview { background: #e8eaed; }
.out-canvas { display: block; width: calc(var(--w) * 1px); max-width: 100%; height: auto; }
.out-canvas.is-big-square { width: 200px; }
.is-compact .out-canvas.is-big-square { width: 128px; }
.preview-halfSize .out-promo .out-canvas, .preview-halfSize .out-shots .out-canvas { width: calc(var(--w) * 0.5px); }
.out-title { font-weight: 600; font-size: 14px; }
.out-sub { font-size: 12px; color: var(--muted); }
.out-sub span { display: inline-block; max-width: 100%; overflow-wrap: anywhere; }
.out-alerts, .out-checks { list-style: none; padding: 0; margin: 6px 0 0; font-size: 12px; }
.out-alerts:empty { display: none; }
.out-alerts li, .out-checks li { padding-left: 18px; position: relative; margin: 2px 0; }
.out-alerts li::before, .out-checks li::before { position: absolute; left: 0; }
.out-details { font-size: 12px; margin-top: 6px; }
.out-details summary { cursor: pointer; color: var(--muted); width: fit-content; }
.out-details summary.is-ok { color: var(--ok); }
.out-details summary.is-ok::after { content: " ✓"; }
.check-ok { color: var(--ok); }
.check-ok::before { content: "✓"; }
.check-tip { color: var(--muted); }
.check-tip::before { content: "·"; font-weight: 700; }
.check-info { color: var(--info); }
.check-info::before { content: "ℹ"; }
.check-warn { color: var(--warn); }
.check-warn::before { content: "⚠"; }
.out-card .btn { align-self: flex-start; }
.out-empty { grid-column: 1 / -1; padding: 24px; text-align: center; color: var(--muted); border: 1px dashed var(--border); border-radius: var(--radius); font-size: 14px; }

/* 封面工具：生成按钮、规格多选、自定义尺寸、背景图、安全区预览 */
.title-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 18px; margin-top: 12px; }
.title-actions .btn { min-width: 140px; }
.title-note { font-size: 14px; font-weight: 600; }
.field textarea.is-invalid { border-color: var(--warn); box-shadow: 0 0 0 3px color-mix(in srgb, var(--warn) 22%, transparent); animation: shake 0.4s; }
@keyframes shake { 20%, 60% { transform: translateX(-5px); } 40%, 80% { transform: translateX(5px); } }
.results.is-flash { animation: flash 1.4s ease-out; border-radius: var(--radius); }
@keyframes flash { 0%, 30% { box-shadow: 0 0 0 3px var(--primary); } 100% { box-shadow: 0 0 0 3px transparent; } }
@media (prefers-reduced-motion: reduce) { .field textarea.is-invalid, .results.is-flash { animation: none; } }
.script-error { margin: 0 0 16px; padding: 12px 16px; border-radius: var(--radius); border: 1px solid var(--warn); background: color-mix(in srgb, var(--warn) 10%, var(--surface)); font-size: 14px; }
.chip-group { display: flex; gap: 6px 10px; align-items: baseline; margin-bottom: 8px; }
.chip-group-label { flex: none; width: 7em; font-size: 12px; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; font-size: 13px; cursor: pointer; background: var(--surface); user-select: none; }
.chip small { color: var(--muted); font-size: 11px; margin-left: 5px; }
.chip:hover { border-color: var(--primary); }
.chip:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.chip:has(input:checked) small { color: inherit; font-weight: 400; }
.chip:has(input:focus-visible) { outline: 2px solid var(--primary); outline-offset: 2px; }
@media (max-width: 560px) {
  .chip-group { flex-direction: column; gap: 4px; }
  .chip-group-label { width: auto; }
}
.custom-size { margin-top: 10px; padding: 12px; border-radius: 10px; background: var(--surface-2); }
.custom-size label { font-size: 13px; display: inline-flex; align-items: center; gap: 6px; }
.custom-size input[type="number"] { width: 92px; padding: 7px 9px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text); font: inherit; font-size: 14px; }
.ratio-buttons { margin-top: 8px; gap: 6px; }
.ratio-buttons .btn { padding: 4px 10px; }
.photo-drop { display: flex; align-items: center; gap: 12px; text-align: left; place-items: initial; }
.photo-drop .thumb canvas { display: block; max-width: 100%; max-height: 100%; }
.photo-drop small { word-break: break-all; }
.brand-compact .dropzone { min-height: 0; padding: 14px; }
.brand-compact .dropzone svg { width: 24px; height: 24px; }
.brand-compact .dropzone strong { font-size: 14px; }

.cover-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 20px; margin: -4px 0 14px; }
.cover-controls .seg-wrap { margin: 0; }
.bg-gallery { flex-basis: 100%; min-width: 0; display: flex; align-items: center; gap: 6px 10px; }
.bg-gallery > .seg-label { flex: none; white-space: nowrap; }
.bg-tiles { flex: 1 1 auto; min-width: 0; display: flex; gap: 8px; overflow-x: auto; padding: 2px 2px 6px; }
.bg-tile { flex: none; display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 3px; border: 2px solid transparent; border-radius: 10px; background: none; cursor: pointer; font: inherit; font-size: 12px; color: var(--muted); }
.bg-tile canvas { display: block; width: 96px; height: 54px; border-radius: 6px; box-shadow: inset 0 0 0 1px var(--border); }
.bg-tile:hover { color: var(--text); }
.bg-tile[aria-pressed="true"] { border-color: var(--primary); color: var(--primary); font-weight: 600; }
.cover-frame { position: relative; display: inline-block; max-width: 100%; line-height: 0; }
.cover-frame .out-canvas, .cover-frame .out-canvas.is-big-square { width: auto; max-width: 100%; max-height: 340px; }
.cover-frame .zone-safe, .cover-frame .zone-avoid { position: absolute; display: none; pointer-events: none; }
.show-safe .cover-frame .zone-safe, .show-safe .cover-frame .zone-avoid { display: block; }
.zone-safe { border: 2px dashed rgba(34, 197, 94, 0.95); box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.28); }
.zone-avoid { background: repeating-linear-gradient(45deg, rgba(220, 38, 38, 0.45) 0 6px, rgba(220, 38, 38, 0.15) 6px 12px); }
.zone-safe::after, .zone-avoid::after {
  content: attr(data-label); position: absolute; left: 4px; top: 4px; padding: 1px 6px; border-radius: 4px;
  font-size: 11px; line-height: 1.6; color: #fff; background: rgba(0, 0, 0, 0.6);
}
.cover-frame { overflow: hidden; }

/* 各平台的封面尺寸页 */
.breadcrumb { padding-top: 18px; font-size: 13px; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb + .tool-head { padding-top: 10px; }
.guide-quick { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px 20px; margin-bottom: 28px; }
.guide-quick dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr)); gap: 14px 28px; margin: 0; }
.guide-quick dt { font-size: 12px; color: var(--muted); }
.guide-quick dd { margin: 2px 0 0; font-weight: 600; font-size: 15px; }
.guide-quick .hint { font-size: 12px; color: var(--muted); margin: 12px 0 0; }
.guide-h2 { font-size: 20px; margin: 0 0 12px; }
.guide-body { max-width: 760px; padding: 8px 0 12px; }
.guide-body h2 { font-size: 20px; margin: 30px 0 10px; }
.guide-body p, .guide-body li { margin: 0 0 10px; }
.guide-body .faq { margin: 0; }
.guide-body .sources { font-size: 14px; padding-left: 20px; }
.guide-links { margin: 20px 0 28px; }
.guide-links h2 { font-size: 17px; margin: 0 0 10px; }
.guide-links ul, .spec-links { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.guide-links a { display: inline-block; padding: 6px 14px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); font-size: 14px; }
.guide-links a:hover { border-color: var(--primary); text-decoration: none; }
.table-wrap { overflow-x: auto; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; background: var(--surface); }
.spec-table th, .spec-table td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.spec-table th { font-size: 12px; color: var(--muted); font-weight: 600; background: var(--surface-2); }
.spec-guide { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 20px; }
.spec-guide h2 { font-size: 17px; margin: 0 0 4px; }
.spec-guide > p { font-size: 13px; color: var(--muted); margin: 0 0 12px; }

/* 结果分组下的样式切换 */
.seg-wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin: -4px 0 14px; }
.seg-label { font-size: 13px; font-weight: 600; }
.seg { display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 3px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border); }
.seg button { border: 0; background: transparent; color: var(--muted); font: inherit; font-size: 13px; padding: 5px 12px; border-radius: 7px; cursor: pointer; }
.seg button:hover { color: var(--text); }
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--primary); font-weight: 600; box-shadow: 0 1px 2px rgba(16, 24, 40, 0.12); }

.snippet { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 20px; }
.snippet pre { margin: 10px 0 0; padding: 14px; background: var(--surface-2); border-radius: 8px; overflow: auto; font-size: 13px; }
.snippet .field { margin: 12px 0 0; }

/* 固定在屏幕底部的下载栏 */
.download-bar {
  position: sticky; bottom: 0; z-index: 5; margin: 8px -20px 0; padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 10px 16px; flex-wrap: wrap;
  background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(8px);
  border-top: 1px solid var(--border); box-shadow: 0 -6px 18px rgba(16, 24, 40, 0.06);
}
.download-bar .btn { min-width: 200px; }
#download-summary { font-size: 14px; color: var(--muted); }
#download-summary .link-btn { font-size: 14px; }
.summary-ok { color: var(--ok); }
.summary-warn { color: var(--warn); text-decoration: underline; }
@media (max-width: 560px) {
  .download-bar { padding: 10px 20px; gap: 8px; }
  .download-bar .btn { width: 100%; padding: 10px 20px; }
  #download-summary, #download-summary .link-btn { font-size: 13px; }
}

/* 文章页（隐私政策等） */
.prose { max-width: 760px; margin: 0 auto; padding: 36px 0; }
.prose h1 { font-size: clamp(24px, 4vw, 30px); }
.prose h2 { font-size: 19px; margin-top: 28px; }

/* maskable 图标预览：原图 + 安全区虚线 + 圆形裁切效果 */
.mask-demo { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; }
.mask-demo figure { margin: 0; text-align: center; font-size: 12px; color: var(--muted); }
.mask-demo .out-canvas { width: 160px; }
.mask-demo figcaption { margin-top: 6px; }
.safe-zone { position: relative; display: inline-block; line-height: 0; }
.safe-zone::after { content: ""; position: absolute; inset: 10%; border: 2px dashed rgba(220, 38, 38, 0.75); border-radius: 50%; pointer-events: none; }
.is-round { border-radius: 50%; }
.out-apple .out-canvas { border-radius: 22%; }

/* 代码片段 */
.snippet .hint { font-size: 12px; color: var(--muted); margin: 6px 0 0; }