/* Byte01 公开站样式。手写、内嵌(无构建步骤),遵循 docs/02 的设计 Token。 */
:root {
  --color-bg: #ffffff;
  --color-bg-subtle: #f6fafc;
  --color-bg-card: #ffffff;
  --color-bg-accent: #ecfdf5;
  --color-text: #111111;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-accent: #0f766e;
  --radius-card: 14px;
  --radius-button: 10px;
  --font-sans: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0b0f0e;
    --color-bg-subtle: #111614;
    --color-bg-card: #131a18;
    --color-bg-accent: #0c2420;
    --color-text: #e6edeb;
    --color-text-muted: #9ba5a2;
    --color-border: #232b29;
    --color-accent: #2dd4bf;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 顶部导航 */
.site-nav {
  height: 64px; display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
}
.brand { font-weight: 700; font-size: 18px; }
.brand .code { font-family: var(--font-mono); color: var(--color-accent); }
.nav-links a { color: var(--color-text-muted); margin-left: 20px; font-size: 14px; }
.nav-links a:hover { color: var(--color-text); }

/* Hero */
.hero { padding: 72px 0 40px; }
.hero .tag {
  display: inline-block; font-size: 12px; color: var(--color-accent);
  background: var(--color-bg-accent); padding: 4px 10px; border-radius: 999px;
}
.hero h1 { font-size: 48px; line-height: 1.15; margin: 18px 0 12px; font-weight: 800; }
.hero p.sub { font-size: 18px; color: var(--color-text-muted); max-width: 640px; margin: 0 0 28px; }
.btn {
  display: inline-block; height: 44px; line-height: 44px; padding: 0 22px;
  border-radius: var(--radius-button); font-size: 15px; font-weight: 600;
}
.btn-primary { background: #111; color: #fff; }
.btn-ghost { color: var(--color-text); border: 1px solid var(--color-border); margin-left: 12px; }

/* 区块标题 */
.section { padding: 36px 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 20px; }
.section-head h2 { font-size: 24px; margin: 0; }
.section-head .more { font-size: 14px; color: var(--color-accent); }
.section-head .desc { color: var(--color-text-muted); font-size: 14px; margin-left: 12px; }

/* 网格与卡片 */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-card); padding: 22px; transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.card .icon { font-family: var(--font-mono); color: var(--color-accent); font-size: 18px; }
.card .name { font-weight: 600; font-size: 16px; margin: 8px 0 4px; }
.card .count, .card .summary { color: var(--color-text-muted); font-size: 14px; }
.card .meta { margin-top: 14px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.pill {
  font-size: 12px; color: #4b5563; background: #f3f4f6; padding: 2px 10px; border-radius: 999px;
}
@media (prefers-color-scheme: dark) { .pill { color: var(--color-text-muted); background: var(--color-bg-subtle); } }
.stars { font-size: 12px; color: var(--color-text-muted); font-family: var(--font-mono); }
/* 资源健康状态(探活 job 维护):可用/异常/失效;色值沿用既有状态色约定 */
.health { font-size: 12px; font-weight: 600; }
.health-ok { color: var(--color-accent); }
.health-warning { color: #b45309; }
.health-dead { color: #b91c1c; }
.health-pending { color: var(--color-text-muted); font-weight: 400; }
.health-checked { color: var(--color-text-muted); font-size: 12px; margin-left: 8px; }
@media (prefers-color-scheme: dark) {
  .health-warning { color: #fbbf24; }
  .health-dead { color: #fca5a5; }
}

/* 免费额度清单 */
.ft-disclaimer { color: var(--color-text-muted); font-size: 13px; margin: -8px 0 16px; }
.ft-disclaimer a { color: var(--color-accent); }
.ft-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(420px, 1fr)); gap: 16px; }
.ft-card { display: flex; flex-direction: column; }
.ft-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.ft-head .name { margin: 0; font-size: 16px; }
.ft-card .summary { margin-top: 6px; }
.ft-info { margin: 12px 0 0; grid-template-columns: 76px 1fr; font-size: 14px; }
.ft-card-required { color: #b45309; font-weight: 600; }
@media (prefers-color-scheme: dark) { .ft-card-required { color: #fbbf24; } }
.ft-notes { color: var(--color-text-muted); font-size: 13px; margin: 10px 0 0; }
.ft-actions { margin-top: auto; padding-top: 14px; }
@media (max-width: 600px) {
  .ft-grid { grid-template-columns: 1fr; }
}

/* 回声(轻论坛)。内页与列表同宽(全版心,同工具页宽度模型),不用 .detail。 */
.echo-page .back { color: var(--color-text-muted); font-size: 14px; }
.echo-page h1 { margin: 12px 0 12px; font-size: 26px; }
.echo-page .sub { color: var(--color-text-muted); margin: 0 0 20px; }
.echo-panel {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: 14px; padding: 18px 20px;
}
.echo-topics { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
/* 紧凑两行式条目:圆标 | 标题+胶囊 / 作者·时间·摘要 | 回复徽章 */
.echo-topic-card { display: flex; align-items: center; gap: 12px; padding: 12px 16px; }
.echo-topic-card .res-logo { width: 36px; height: 36px; font-size: 16px; }
.echo-topic-main { flex: 1; min-width: 0; }
.echo-topic-line { display: flex; align-items: center; gap: 8px; min-width: 0; }
.echo-topic-card .name {
  font-size: 15px; margin: 0; min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.echo-topic-line .pill { flex: none; }
.echo-meta-fixed { flex: none; }
.echo-excerpt {
  flex: 1; min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.echo-reply-badge {
  flex: none; font-size: 12px; color: var(--color-text-muted);
  border: 1px solid var(--color-border); border-radius: 999px; padding: 4px 12px;
  white-space: nowrap;
}
.echo-meta {
  display: flex; align-items: center; gap: 10px;
  color: var(--color-text-muted); font-size: 13px; margin-top: 3px;
}
/* 详情页的头部元信息仍允许换行(楼层操作组多) */
.echo-post-head .echo-meta, .echo-reply-head .echo-meta { flex-wrap: wrap; }
.echo-topic-panel .echo-body { margin-top: 12px; }
/* 帖头单行:圆标 · 作者 · 时间 ……(右侧)资源胶囊 + 操作组 */
.echo-post-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.echo-post-head .res-logo { width: 32px; height: 32px; font-size: 14px; }
.echo-author { font-weight: 600; font-size: 14px; color: var(--color-text); }
.echo-time { color: var(--color-text-muted); font-size: 12px; }
.echo-head-side { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.echo-reply-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.echo-reply-head .res-logo { width: 26px; height: 26px; font-size: 12px; }
.echo-reply-head .echo-time { margin-top: 0; }
.echo-floor {
  font-family: var(--font-mono); font-size: 12px; color: var(--color-text-muted);
  text-decoration: none;
}
.echo-floor:hover { color: var(--color-accent); }
.echo-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.echo-act-btn {
  background: none; border: none; padding: 0; cursor: pointer;
  color: var(--color-text-muted); font-size: 12px; font-family: inherit;
}
.echo-act-btn:hover { color: var(--color-accent); }
.echo-mention { color: var(--color-accent); font-weight: 600; }
.echo-note {
  padding: 10px 14px; border-radius: var(--radius-button); font-size: 14px;
  background: var(--color-bg-accent); color: var(--color-accent); margin-bottom: 16px;
}
.echo-note a { color: var(--color-accent); }
.echo-body { line-height: 1.75; font-size: 15px; }
.echo-body p { margin: 0 0 12px; }
.echo-body img {
  max-width: 100%; min-height: 24px; border-radius: 6px;
  background: var(--color-bg-subtle); /* 挂图/加载中占位 */
}
.echo-body pre {
  background: var(--color-bg-subtle); padding: 12px 14px; border-radius: 8px;
  overflow-x: auto; font-family: var(--font-mono); font-size: 13px;
}
.echo-body code { font-family: var(--font-mono); font-size: .92em; background: var(--color-bg-subtle); padding: 1px 5px; border-radius: 4px; }
.echo-body pre code { padding: 0; background: none; }
.echo-body a { color: var(--color-accent); }
.echo-body blockquote {
  margin: 0 0 12px; padding: 8px 14px;
  border-left: 3px solid var(--color-accent); border-radius: 0 8px 8px 0;
  background: var(--color-bg-subtle); color: var(--color-text-muted);
}
.echo-body blockquote p { margin: 0 0 4px; }
.echo-body blockquote p:last-child { margin-bottom: 0; }
.echo-replies { margin-top: 22px; }
.echo-replies h3 { margin: 0 0 10px; font-size: 15px; color: var(--color-text-muted); }
.echo-reply { margin-bottom: 10px; padding: 14px 18px; }
.echo-reply .echo-body { margin-top: 8px; }
.echo-reply:target { border-color: var(--color-accent); } /* 锚点直达的楼层高亮 */
.echo-no-reply { color: var(--color-text-muted); font-size: 14px; padding: 8px 0; }
.echo-report-form { display: inline; }
.echo-reply-form { margin-top: 22px; }
.echo-form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.echo-form-hint { color: var(--color-text-muted); font-size: 12px; }
.echo-login-cta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 16px;
  color: var(--color-text-muted); font-size: 14px;
}
.echo-discuss-cta { margin: 12px 0 0; font-size: 14px; }
.echo-discuss-cta a { color: var(--color-accent); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border); margin-top: 48px; padding: 32px 0;
  color: var(--color-text-muted); font-size: 14px;
}
.site-footer .container {
  display: flex; flex-wrap: wrap; gap: 8px 24px;
  align-items: center; justify-content: space-between;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.footer-links a { color: var(--color-text-muted); text-decoration: none; }
.footer-links a:hover { color: var(--color-text); }

/* 首页贡献召唤区 */
.home-cta { text-align: center; }
.home-cta h2 { margin: 0 0 8px; }
.home-cta p { color: var(--color-text-muted); margin: 0 0 20px; }
.home-cta .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

@media (max-width: 760px) {
  .hero h1 { font-size: 36px; }
  .grid-3 { grid-template-columns: 1fr; }
}

/* 资源库列表 */
.filters { display: flex; gap: 12px; margin-bottom: 16px; }
.search {
  flex: 1; height: 44px; padding: 0 14px; font-size: 15px;
  border: 1px solid var(--color-border); border-radius: var(--radius-button);
  background: var(--color-bg); color: var(--color-text);
}
.search:focus { outline: none; border-color: var(--color-accent); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.chip {
  font-size: 13px; padding: 6px 14px; border-radius: 999px;
  border: 1px solid var(--color-border); color: var(--color-text-muted);
}
.chip:hover { color: var(--color-text); border-color: var(--color-accent); }
.chip-active { background: var(--color-accent); color: var(--color-accent-fg, #fff); border-color: var(--color-accent); }
.empty { color: var(--color-text-muted); padding: 40px 0; text-align: center; }
.pager { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 28px; }
.pager-info { color: var(--color-text-muted); font-size: 14px; }
.pager .btn-ghost { margin-left: 0; }

/* 资源详情 */
.detail { max-width: 760px; }
.detail .back { color: var(--color-text-muted); font-size: 14px; }
.detail h1 { margin: 12px 0 8px; }
.detail-actions { margin: 20px 0 28px; }
.info { display: grid; grid-template-columns: 96px 1fr; gap: 8px 16px; margin: 0 0 28px; }
.info dt { color: var(--color-text-muted); }
.info dd { margin: 0; }
.detail h3 { font-size: 16px; margin: 24px 0 6px; }

/* 贡献表单 */
.form-err { color: #b91c1c; background: #fef2f2; border: 1px solid #fecaca; padding: 10px 14px; border-radius: var(--radius-button); }
@media (prefers-color-scheme: dark) { .form-err { color: #fca5a5; background: #2a1414; border-color: #5b2525; } }
.contribute-form { display: flex; flex-direction: column; gap: 14px; margin-top: 20px; }
.contribute-form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--color-text-muted); }
.contribute-form input, .contribute-form select, .contribute-form textarea {
  font: inherit; color: var(--color-text); background: var(--color-bg);
  border: 1px solid var(--color-border); border-radius: var(--radius-button); padding: 10px 12px;
}
.contribute-form textarea { min-height: 72px; resize: vertical; }
.contribute-form .form-row { display: flex; gap: 16px; }
.contribute-form .form-row > label { flex: 1; }
.contribute-form label.inline { flex-direction: row; align-items: center; gap: 8px; color: var(--color-text); }
.contribute-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; }
.contribute-form button { align-self: flex-start; margin-top: 6px; }

/* ── 导航(完整版)── */
.site-nav { gap: 16px; flex-wrap: wrap; }
.nav-links { display: flex; gap: 18px; flex: 1; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-search input {
  height: 36px; width: 180px; padding: 0 12px; font: inherit; font-size: 13px;
  color: var(--color-text); background: var(--color-bg-subtle);
  border: 1px solid var(--color-border); border-radius: var(--radius-button);
}
.nav-search input:focus { outline: none; border-color: var(--color-accent); }
.nav-login { height: 36px; line-height: 36px; padding: 0 16px; font-size: 14px; }
.nav-user { font-size: 14px; color: var(--color-text); }
.nav-logout { font-size: 13px; color: var(--color-text-muted); }
.nav-logout:hover { color: var(--color-text); }

/* ── Hero 两栏 + 01 视觉 ── */
.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.hero-text .hero-actions { margin-top: 4px; }
.hero-visual {
  position: relative; aspect-ratio: 1 / 0.82; border: 1px solid var(--color-border);
  border-radius: var(--radius-card); overflow: hidden;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 30px 30px; background-position: center;
}
.hero-01 {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -54%);
  font-family: var(--font-mono); font-weight: 800; font-size: clamp(120px, 17vw, 220px);
  line-height: .9; color: var(--color-text); letter-spacing: -.03em;
}
.hchip {
  position: absolute; font-family: var(--font-mono); font-size: 11px; letter-spacing: .04em;
  color: var(--color-text-muted); background: var(--color-bg);
  border: 1px solid var(--color-border); border-radius: 999px; padding: 4px 11px; white-space: nowrap;
}
.hchip-1 { top: 12%; left: 9%; }
.hchip-2 { top: 12%; right: 9%; }
.hchip-3 { top: 46%; right: 5%; }
.hchip-4 { bottom: 22%; right: 14%; }
.hchip-5 { top: 42%; left: 5%; }
.hero-keywords {
  position: absolute; left: 0; right: 0; bottom: 8%; text-align: center;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .14em; color: var(--color-accent);
}

/* ── 分类:一行 6 张(图标框 + 左对齐)── */
.cat-grid { grid-template-columns: repeat(6, 1fr); gap: 14px; }
.cat-card { padding: 16px 14px; }
.cat-icon {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 16px; color: var(--color-accent);
  background: var(--color-bg-accent); border-radius: 10px; margin-bottom: 12px;
}
.cat-card .name { margin: 0 0 2px; }
.cat-card .count { font-size: 13px; }

/* ── 精选资源:4 张 + logo 头 ── */
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.res-card { display: flex; flex-direction: column; }
.res-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.res-logo {
  width: 40px; height: 40px; flex: none; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-weight: 700; font-size: 18px; color: var(--color-text);
  background: var(--color-bg-subtle); border: 1px solid var(--color-border); border-radius: 10px;
}
.res-card .name { margin: 0; }
.res-card .summary { flex: 1; margin-bottom: 8px; }
.res-card .meta { margin-top: auto; }

/* ── 登录页 ── */
.auth-page { max-width: 420px; }
.auth-form { display: flex; flex-direction: column; gap: 12px; margin-top: 16px; }
.auth-form input { font: inherit; color: var(--color-text); background: var(--color-bg);
  border: 1px solid var(--color-border); border-radius: var(--radius-button); padding: 11px 12px; }
.auth-form .code-row { display: flex; gap: 10px; }
.auth-form .code-row input { flex: 1; }
.auth-form .code-row .btn { white-space: nowrap; }
.auth-msg { font-size: 14px; min-height: 20px; }
.auth-msg.ok { color: var(--color-accent); }
.auth-msg.err { color: #b91c1c; }
@media (prefers-color-scheme: dark) { .auth-msg.err { color: #fca5a5; } }
.auth-divider { text-align: center; color: var(--color-text-muted); font-size: 13px; margin: 20px 0 12px; }
.auth-oauth { display: flex; gap: 12px; }
.auth-oauth .btn { flex: 1; text-align: center; margin-left: 0; }

@media (max-width: 1024px) {
  .cat-grid { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 880px) {
  /* 导航换行:高度改自适应,否则固定 64px 会让第二行 nav-links 溢出遮挡内容 */
  .site-nav { height: auto; padding: 10px 0; }
  .hero { grid-template-columns: 1fr; padding: 44px 0 24px; }
  .hero-visual { order: -1; }
  .nav-links { order: 3; width: 100%; overflow-x: auto; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: 1fr; }
}

/* 登录协议勾选 */
.auth-agree { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--color-text-muted); }
.auth-agree input { margin-top: 3px; }
.auth-agree a { color: var(--color-accent); }

/* 协议/政策页 */
.legal { max-width: 760px; }
.legal h1 { margin-bottom: 6px; }
.legal-updated { color: var(--color-text-muted); font-size: 13px; margin: 0 0 24px; }
.legal h3 { font-size: 17px; margin: 28px 0 8px; }
.legal p, .legal li { color: var(--color-text); }
.legal ul { padding-left: 22px; }
.legal li { margin: 4px 0; }
.legal a { color: var(--color-accent); }
.legal code { font-family: var(--font-mono); font-size: .9em; background: var(--color-bg-subtle); padding: 1px 5px; border-radius: 4px; }

/* 在线工具 */
.tool-grid .tool-card { display: flex; align-items: center; gap: 14px; }
.tool-card-body { min-width: 0; }
.tool-card .summary { color: var(--color-text-muted); font-size: 13px; margin-top: 2px; }

/* 索引页搜索 + 分类筛选 */
.tools-toolbar { display: flex; flex-direction: column; gap: 14px; position: sticky; top: 0; z-index: 5; background: var(--color-bg); padding: 14px 0; }
.tools-search-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 12px; }
.tools-search { flex: 1; min-width: 200px; font: inherit; font-size: 14px; padding: 10px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-button); background: var(--color-bg-subtle); color: var(--color-text); }
.tools-search:focus { outline: none; border-color: var(--color-accent); }
.tools-count { margin-left: auto; align-self: center; color: var(--color-text-muted); font-size: 13px; white-space: nowrap; }
.tool-cats { display: flex; flex-wrap: wrap; gap: 8px; }
.tool-cat { font: inherit; font-size: 13px; padding: 6px 14px; border-radius: 999px; border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text-muted); cursor: pointer; transition: color .15s, border-color .15s, background .15s; }
.tool-cat:hover { color: var(--color-text); border-color: var(--color-text-muted); }
.tool-cat.is-active { background: var(--color-bg-accent); border-color: var(--color-accent); color: var(--color-accent); }
.tools-empty { color: var(--color-text-muted); padding: 24px 0; }

/* 分类分组 */
.tool-group { margin-top: 28px; }
.tool-group:first-child { margin-top: 4px; }
.tool-group-title { font-size: 14px; font-weight: 600; color: var(--color-text-muted); margin: 0 0 12px; padding-bottom: 6px; border-bottom: 1px solid var(--color-border); }

/* 分类配色的字母头像(固定浅底,明暗皆可读) */
.tool-group.cat-0 .res-logo { background: #ccfbf1; color: #0f766e; }
.tool-group.cat-1 .res-logo { background: #fee2e2; color: #b91c1c; }
.tool-group.cat-2 .res-logo { background: #dbeafe; color: #1d4ed8; }
.tool-group.cat-3 .res-logo { background: #ede9fe; color: #6d28d9; }
.tool-group.cat-4 .res-logo { background: #fef3c7; color: #b45309; }
.tool-group.cat-5 .res-logo { background: #dcfce7; color: #15803d; }
.tool-group.cat-6 .res-logo { background: #cffafe; color: #0e7490; }
.tool-group.cat-7 .res-logo { background: #fce7f3; color: #be185d; }

/* 工具页「同类工具」 */
.tool-siblings { margin-top: 32px; border-top: 1px solid var(--color-border); padding-top: 20px; }
.tool-siblings h2 { font-size: 15px; color: var(--color-text-muted); margin: 0 0 12px; font-weight: 600; }
.tool-sibling-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tool-sibling { display: inline-block; padding: 6px 14px; border: 1px solid var(--color-border); border-radius: 999px; font-size: 14px; color: var(--color-text); }
.tool-sibling:hover { border-color: var(--color-accent); color: var(--color-accent); }
/* 列表页与内页都用完整版心(.container 1200):H1、说明、面板一律左对齐、
   与列表页卡片同宽,来回切换不跳变。 */
.tool-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.crumb { font-size: 13px; color: var(--color-text-muted); margin-bottom: 10px; }
.crumb a { color: var(--color-accent); }
.crumb span { margin: 0 4px; }
.tool-noscript { color: var(--color-text-muted); }

.tool-card-box { display: flex; flex-direction: column; gap: 14px; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-card); padding: 22px; }
.tool-field { display: flex; flex-direction: column; gap: 6px; }
.tool-label { font-size: 14px; color: var(--color-text-muted); }
.tool-output { width: 100%; font-family: var(--font-mono); font-size: 14px; padding: 10px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-button); background: var(--color-bg); color: var(--color-text); box-sizing: border-box; }
.tool-textarea { resize: vertical; line-height: 1.6; }
.tool-num { width: 120px; font-family: var(--font-mono); padding: 8px 10px; border: 1px solid var(--color-border); border-radius: var(--radius-button); background: var(--color-bg); color: var(--color-text); }
.tool-range { width: 100%; accent-color: var(--color-accent); }
.tool-outrow { display: flex; gap: 8px; align-items: stretch; }
.tool-outrow .tool-output { flex: 1 1 auto; width: auto; min-width: 0; height: 44px; font-size: 18px; }
.tool-outrow .btn { flex: 0 0 auto; white-space: nowrap; }
.tool-opts { display: flex; flex-wrap: wrap; gap: 14px; }
.tool-check { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--color-text); cursor: pointer; }
.tool-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.tool-msg { color: #b91c1c; font-size: 13px; min-height: 1em; }
.tool-strength { height: 6px; background: var(--color-bg-subtle); border-radius: 4px; overflow: hidden; }
.tool-strength-bar { display: block; height: 100%; width: 6%; transition: width .2s, background .2s; }
.tool-strength-bar.is-weak { background: #b91c1c; }
.tool-strength-bar.is-mid { background: #c2830e; }
.tool-strength-bar.is-strong { background: var(--color-accent); }
.tool-strength-txt { font-size: 12px; color: var(--color-text-muted); }

/* 摘要/进制/颜色:名称 + 只读结果 + 复制,一行对齐 */
.tool-hash-row { display: flex; align-items: center; gap: 8px; }
.tool-hash-name { flex: 0 0 84px; font-family: var(--font-mono); font-size: 13px; color: var(--color-text-muted); }
.tool-hash-row .tool-output { flex: 1; min-width: 0; }
.tool-color-row { display: flex; align-items: center; gap: 10px; }
.tool-color-row .tool-output { flex: 1; min-width: 0; }
.tool-color-picker { flex: 0 0 auto; width: 48px; height: 44px; padding: 0; border: 1px solid var(--color-border); border-radius: var(--radius-button); background: none; cursor: pointer; }
.tool-swatch { flex: 0 0 auto; width: 44px; height: 44px; border-radius: var(--radius-button); border: 1px solid var(--color-border); }
select.tool-num { width: auto; min-width: 120px; }
.tool-pre mark { background: var(--color-bg-accent); color: var(--color-accent); border-radius: 3px; padding: 0 1px; }
.tool-totp-code { font-family: var(--font-mono); font-size: 40px; font-weight: 700; letter-spacing: 4px; text-align: center; color: var(--color-accent); padding: 6px 0; }
.tool-qr { margin-top: 4px; }
.tool-qr svg { display: block; width: 220px; max-width: 100%; height: auto; background: #fff; padding: 10px; border-radius: var(--radius-button); box-sizing: border-box; }
.tool-diff { line-height: 1.5; }
.tool-diff .d-add { display: block; background: rgba(48, 164, 108, 0.14); }
.tool-diff .d-del { display: block; background: rgba(185, 28, 28, 0.12); }
.tool-diff .d-eq { display: block; color: var(--color-text-muted); }
.tool-hash-name.tool-hash-wide { flex: 0 0 120px; }
.tool-parts { display: flex; flex-direction: column; gap: 8px; }
.tool-runs { display: flex; flex-direction: column; gap: 2px; }
.tool-run { font-family: var(--font-mono); font-size: 14px; color: var(--color-text); }
.tool-contrast-preview { padding: 20px; border-radius: var(--radius-button); border: 1px solid var(--color-border); text-align: center; font-size: 18px; }
.pill.pill-ok { color: var(--color-accent); background: var(--color-bg-accent); }
.pill.pill-no { color: #b91c1c; background: rgba(185, 28, 28, 0.1); }
.tool-http-row { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.tool-http-row .pill { font-family: var(--font-mono); flex: 0 0 auto; }
.tool-http-name { font-weight: 600; font-size: 14px; }
.tool-http-desc { color: var(--color-text-muted); font-size: 13px; }
.pill.http-1xx { color: var(--color-text-muted); background: var(--color-bg-subtle); }
.pill.http-2xx { color: var(--color-accent); background: var(--color-bg-accent); }
.pill.http-3xx { color: #c2830e; background: rgba(194, 131, 14, 0.12); }
.pill.http-4xx, .pill.http-5xx { color: #b91c1c; background: rgba(185, 28, 28, 0.1); }

/* 渐变生成器 */
.tool-stops { display: flex; flex-direction: column; gap: 8px; }
.tool-stop-row { display: flex; align-items: center; gap: 8px; }
.tool-stop-row .tool-num { width: 88px; }
.tool-gradient-preview { height: 120px; border-radius: var(--radius-button); border: 1px solid var(--color-border); }

/* 缓动曲线 */
.tool-bezier-svg { display: block; width: 280px; max-width: 100%; height: auto; color: var(--color-text); }
.tool-bezier-handle { cursor: grab; }
.tool-bezier-demo { position: relative; height: 20px; margin-top: 4px; background: var(--color-bg-subtle); border-radius: 999px; }
.tool-bezier-ball { position: absolute; left: 0; top: 2px; width: 16px; height: 16px; border-radius: 50%; background: var(--color-accent); }

/* 阴影生成器 */
.tool-shadow-preview { display: flex; justify-content: center; align-items: center; padding: 36px; background: var(--color-bg-subtle); border-radius: var(--radius-button); }
.tool-shadow-box { width: 100px; height: 100px; background: var(--color-bg-card); border-radius: 12px; }

/* Markdown 预览 */
.tool-md { line-height: 1.7; overflow-wrap: break-word; }
.tool-md > *:first-child { margin-top: 0; }
.tool-md h1, .tool-md h2, .tool-md h3, .tool-md h4 { margin: 18px 0 8px; line-height: 1.3; }
.tool-md h1 { font-size: 24px; } .tool-md h2 { font-size: 20px; } .tool-md h3 { font-size: 17px; }
.tool-md p, .tool-md li { color: var(--color-text); }
.tool-md a { color: var(--color-accent); }
.tool-md code { font-family: var(--font-mono); font-size: .9em; background: var(--color-bg-subtle); padding: 1px 5px; border-radius: 4px; }
.tool-md pre { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-button); padding: 12px; overflow: auto; }
.tool-md pre code { background: none; padding: 0; }
.tool-md blockquote { margin: 8px 0; padding-left: 12px; border-left: 3px solid var(--color-border); color: var(--color-text-muted); }
.tool-md table { border-collapse: collapse; }
.tool-md th, .tool-md td { border: 1px solid var(--color-border); padding: 4px 8px; }
.tool-md img { max-width: 100%; }

/* highlight.js 极简主题(用设计 token) */
.hljs { color: var(--color-text); background: none; }
.hljs-comment, .hljs-quote { color: var(--color-text-muted); font-style: italic; }
.hljs-keyword, .hljs-selector-tag, .hljs-built_in, .hljs-name, .hljs-tag { color: var(--color-accent); }
.hljs-string, .hljs-attr, .hljs-template-tag, .hljs-addition { color: #30a46c; }
.hljs-number, .hljs-literal, .hljs-variable, .hljs-type, .hljs-selector-attr { color: #c2830e; }
.hljs-title, .hljs-title.function_, .hljs-section { color: #8b5cf6; }
.hljs-attribute, .hljs-symbol, .hljs-meta, .hljs-selector-id, .hljs-selector-class { color: #0ea5e9; }
.hljs-deletion { color: #b91c1c; }
.hljs-emphasis { font-style: italic; } .hljs-strong { font-weight: 700; }

.tool-two { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.tool-section-head { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--color-text-muted); margin-bottom: 6px; }
.tool-pre { font-family: var(--font-mono); font-size: 13px; background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-button); padding: 12px; margin: 0; overflow: auto; max-height: 320px; white-space: pre-wrap; word-break: break-all; color: var(--color-text); }
.tool-claims { display: flex; flex-wrap: wrap; gap: 8px; }
.tool-mini { padding: 2px 10px; font-size: 12px; }
.tool-verify-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.tool-verify-row .tool-output { flex: 1; min-width: 200px; }
.tool-verify { font-size: 13px; color: var(--color-text-muted); }
.tool-verify.ok { color: var(--color-accent); }
.tool-verify.err { color: #b91c1c; }
@media (prefers-color-scheme: dark) { .tool-msg, .tool-verify.err { color: #fca5a5; } }

@media (max-width: 720px) {
  .tool-two { grid-template-columns: 1fr; }
}

/* 手机:收紧留白、缩小大标题与搜索框、工具面板贴合窄屏 */
@media (max-width: 600px) {
  .container { padding: 0 16px; }
  .section { padding: 24px 0; }
  .hero { padding: 32px 0 20px; }
  .hero h1 { font-size: 30px; }
  .section-head h2 { font-size: 20px; }
  .nav-search input { width: 132px; }
  .detail, .legal { max-width: 100%; }
  .tools-search { max-width: none; width: 100%; }
  .tool-card-box { padding: 16px; }
  .tool-outrow .tool-output { font-size: 16px; }
  .tool-opts { gap: 10px 14px; }
  .btn { padding: 0 18px; }
  .echo-topic-card { gap: 10px; }
  .echo-reply-badge { display: none; } /* 手机上让位给标题,回复数进详情看 */
  .echo-head-side { margin-left: 0; width: 100%; justify-content: flex-start; }
  .echo-actions { margin-left: 0; }
  .echo-panel { padding: 14px 16px; border-radius: 12px; }
}