/* ============================================================
   components.css  组件视觉（editorial / 单色信号蓝 / 极简前卫）
   找AI · 好用的 AI，都在这里
   ============================================================ */

/* ============ 导航 ============ */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
  transition: border-color var(--t-mid) var(--ease), background var(--t-mid) var(--ease);
}
.nav__inner {
  display: flex; align-items: center; gap: 16px;
  height: 68px;
  transition: height var(--t-mid) var(--ease);
}
.nav.is-scrolled { border-color: var(--border-strong); }
.nav.is-scrolled .nav__inner { height: 56px; }

.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand__logo {
  width: 36px; height: 36px; border-radius: 9px;
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 800; font-size: 15px; letter-spacing: -.04em;
  color: #fff; background: var(--text);
  transition: background var(--t-fast) var(--ease);
}
.brand:hover .brand__logo { background: var(--accent); }
.brand span:last-child { font-size: 16px; line-height: 1.2; font-weight: 700; letter-spacing: -.02em; }

.nav__links { display: flex; gap: 2px; margin-left: auto; align-items: center; }
.nav__link {
  position: relative; padding: 8px 13px; border-radius: 8px;
  font-size: 14px; font-weight: 500; color: var(--text-dim);
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.nav__link:hover { color: var(--text); background: var(--surface-2); }
.nav__link.is-active { color: var(--text); }
.nav__link.is-active::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: 2px; height: 2px;
  background: var(--accent); border-radius: 2px;
}

.icon-btn {
  flex-shrink: 0; width: 36px; height: 36px; border-radius: 9px;
  display: grid; place-items: center; color: var(--text-dim);
  background: transparent; border: 1px solid var(--border);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); }

/* ============ Hero（搜索为主视觉） ============ */
.hero {
  position: relative;
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: clamp(56px, 9vw, 104px) 0 60px;
  overflow: hidden;
}
/* 开源极简几何背景图（前卫、极淡、不滚动抢戏） */
.hero__bg {
  position: absolute; inset: -5% -5% 0 -5%; z-index: 0; pointer-events: none;
  background: url("../img/hero-bg.svg") center top / cover no-repeat;
  opacity: .9;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 55%, transparent 100%);
          mask-image: linear-gradient(180deg, #000 0%, #000 55%, transparent 100%);
}
:root[data-theme="dark"] .hero__bg { opacity: .55; filter: invert(1) hue-rotate(180deg); }
.hero > * { position: relative; z-index: 1; }

.hero__logo {
  width: 52px; height: 52px; border-radius: 13px;
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 800; font-size: 22px; letter-spacing: -.04em; color: #fff;
  background: var(--text);
  margin-bottom: 26px;
}
.hero h1 {
  font-size: clamp(46px, 8.5vw, 88px);
  font-weight: 800; letter-spacing: -.05em; line-height: .98;
  color: var(--text);
}
.hero .lead {
  margin-top: 18px; font-size: 17px; color: var(--text-dim); max-width: 480px;
  letter-spacing: -.01em;
}
.hero__search {
  position: relative;
  margin-top: 36px; width: min(660px, 92vw);
  display: flex; align-items: center; gap: 12px;
  padding: 7px 7px 7px 20px; border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-md);
  transition: border-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}
.hero__search:focus-within {
  border-color: var(--accent);
  box-shadow: var(--ring);
  transform: translateY(-2px);
}
.hero__search svg { color: var(--text-faint); flex-shrink: 0; width: 20px; height: 20px; }
.hero__search input {
  flex: 1; border: 0; background: transparent; outline: none; color: var(--text);
  font-size: 16px; padding: 14px 0;
}
.hero__search input::placeholder { color: var(--text-faint); }
.hero__search .btn-primary { border-radius: 10px; padding: 12px 22px; }

.hero__tags {
  margin-top: 20px; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px;
  font-size: 13px; color: var(--text-dim);
}
.hero__tags span { color: var(--text-faint); }
.hero__tags a {
  padding: 6px 13px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text-dim);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.hero__tags a:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }

/* ============ 四分类大卡片（首页主视觉下方） ============ */
.section { padding: 40px 0; }
.section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.section__title { font-size: 23px; letter-spacing: -.03em; }
.section__more { font-size: 13px; color: var(--text-faint); }

.category-cards {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.cat-card {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; gap: 13px;
  padding: 22px 22px 20px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transform: translateY(var(--ty, 0));
  transition: transform var(--t-mid) var(--ease-out), border-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
  cursor: pointer;
}
.cat-card:hover {
  --ty: -5px;
  border-color: var(--border-strong);
  box-shadow: var(--shadow-lg);
}
.cat-card::before {  /* 顶部细线（信号蓝，单色编辑风） */
  content: ""; position: absolute; top: 0; left: 22px; right: 22px; height: 2px;
  background: var(--accent); opacity: 0; transform: scaleX(0); transform-origin: left;
  transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}
.cat-card:hover::before { opacity: 1; transform: scaleX(1); }

/* 线性极简图标（替代 emoji） */
.cat-card__icon {
  width: 40px; height: 40px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
}
.cat-card__icon svg { width: 21px; height: 21px; }
.cat-card__no {
  position: absolute; top: 18px; right: 20px;
  font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); letter-spacing: .04em;
}
.cat-card__name { font-family: var(--font-display); font-size: 19px; font-weight: 700; letter-spacing: -.02em; }
.cat-card__desc { font-size: 13px; color: var(--text-dim); line-height: 1.55; }
.cat-card__meta {
  margin-top: auto; display: flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; color: var(--text-dim);
}
.cat-card__meta .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

/* ============ 精选网格卡片 ============ */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }

.card {
  position: relative; overflow: hidden; isolation: isolate;
  display: flex; flex-direction: column; gap: 12px;
  padding: 20px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transform: translateY(var(--ty, 0)) rotateX(var(--rx, 0)) rotateY(var(--ry, 0));
  transform-style: preserve-3d;
  transition: transform var(--t-mid) var(--ease-out), border-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
  cursor: pointer;
}
.card:hover { --ty: -5px; border-color: var(--border-strong); box-shadow: var(--shadow-lg); }
.card:focus-visible { --ty: -3px; border-color: var(--accent); }
.card::before {  /* 顶部细线（单色信号蓝） */
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; z-index: 2;
  background: var(--accent); opacity: 0;
  transform: scaleX(0); transform-origin: left;
  transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}
.card:hover::before { opacity: 1; transform: scaleX(1); }
.card::after {  /* 光标聚光（电蓝极淡） */
  content: ""; position: absolute; inset: 0; z-index: 1; opacity: 0;
  background: radial-gradient(240px circle at var(--mx, 50%) var(--my, 50%), var(--accent-soft), transparent 60%);
  transition: opacity var(--t-mid) var(--ease); pointer-events: none;
}
.card:hover::after { opacity: 1; }

.type-badge {
  position: absolute; top: 14px; right: 14px; z-index: 3;
  font-size: 10px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  padding: 4px 9px; border-radius: 999px;
  color: var(--text-dim); background: var(--surface-2); border: 1px solid var(--border);
}
.type-badge--tools, .type-badge--opensource, .type-badge--skill, .type-badge--plugins, .type-badge--creators { color: var(--accent); }

.card__top { display: flex; align-items: center; gap: 12px; margin-top: 4px; }
.card__logo {
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
  display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; font-size: 15px; letter-spacing: -.02em;
  color: #fff; background: var(--accent);
}
.card__name { font-family: var(--font-display); font-weight: 600; font-size: 16px; letter-spacing: -.02em; }
.card__sub { font-size: 12px; color: var(--text-faint); }
.card__desc { font-size: 13px; color: var(--text-dim); line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card__meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.card__pricing-note { margin-top: -4px; font-size: 11px; line-height: 1.45; color: var(--text-faint); }
.card__foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding-top: 12px; border-top: 1px solid var(--border); }
.card__cat { font-size: 12px; color: var(--text-faint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card__visit {
  font-size: 13px; font-weight: 600; color: var(--accent);
  display: inline-flex; align-items: center; gap: 4px; flex-shrink: 0;
  transition: gap var(--t-fast) var(--ease);
}
.card__visit:hover { gap: 8px; }

/* ============ 标签 / Chip ============ */
.chip {
  font-size: 11px; font-weight: 600; letter-spacing: .01em;
  padding: 4px 10px; border-radius: 999px;
  color: var(--text-dim); background: var(--surface-2); border: 1px solid var(--border);
}
.chip--price-open { color: var(--accent); }
.chip--price-freemium { color: var(--accent); }
.chip--stars { color: var(--text-dim); }
.chip-toggle {
  font-size: 13px; font-weight: 600; color: var(--text-dim);
  padding: 9px 14px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border);
}
.chip-toggle:hover { color: var(--text); border-color: var(--border-strong); }

/* ============ 统计条 ============ */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
  margin: 0 0 8px; padding: 22px 24px;
  border-radius: 16px; border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.stat { text-align: left; padding-left: 14px; border-left: 1px solid var(--border); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat__num { font-family: var(--font-display); font-weight: 800; font-size: 34px; line-height: 1; letter-spacing: -.03em; color: var(--text); }
.stat__label { margin-top: 6px; font-size: 12px; letter-spacing: .04em; color: var(--text-faint); }
.c-tool, .c-os, .c-plugin, .c-creator { color: var(--text); }

/* ============ 分类树 ============ */
.layout { display: grid; grid-template-columns: 240px 1fr; gap: 28px; align-items: start; }
.tree {
  position: sticky; top: 88px;
  padding: 14px; border-radius: 16px; border: 1px solid var(--border);
  background: var(--surface);
  max-height: calc(100vh - 108px); overflow: auto;
}
.tree__group { margin-bottom: 6px; }
.tree__head {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 9px 10px; border: 0; border-radius: 9px; background: transparent;
  color: var(--text); font-size: 13px; font-weight: 600; text-align: left;
}
.tree__head:hover { background: var(--surface-2); }
.tree__head.is-active { color: var(--accent); background: var(--accent-soft); }
.tree__count { font-size: 11px; color: var(--text-faint); }
.tree__items { display: none; flex-direction: column; gap: 2px; padding: 2px 0 6px; }
.tree__group.is-open .tree__items { display: flex; }
.tree__item {
  display: flex; align-items: center; gap: 9px; padding: 7px 10px; border: 0; border-radius: 8px;
  background: transparent; color: var(--text-dim); font-size: 13px; text-align: left; width: 100%;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.tree__item:hover { background: var(--surface-2); color: var(--text); }
.tree__item.is-active { background: var(--accent-soft); color: var(--text); }
.tree__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.tree__group:first-child .tree__items { display: flex; }

/* ============ 筛选条 ============ */
.filterbar { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.filterbar__search {
  flex: 1; min-width: 200px; display: flex; align-items: center; gap: 9px;
  padding: 10px 16px; border-radius: 12px; color: var(--text-faint);
  background: var(--surface); border: 1px solid var(--border);
  transition: border-color var(--t-fast) var(--ease);
}
.filterbar__search:focus-within { border-color: var(--accent); }
.filterbar__search input { flex: 1; border: 0; background: transparent; outline: none; color: var(--text); font-size: 14px; }
.filterbar__search input::placeholder { color: var(--text-faint); }
.select {
  appearance: none; padding: 10px 36px 10px 16px; border-radius: 12px; font-size: 14px; font-weight: 500;
  color: var(--text); background: var(--surface); border: 1px solid var(--border);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235A5A60' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
  cursor: pointer;
}
.select:focus { outline: none; border-color: var(--accent); }
.tree-toggle { display: none; }

.resultbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.resultbar span { font-size: 13px; color: var(--text-faint); }
.resultbar__clear {
  border: 0; background: transparent; color: var(--accent); font-size: 13px; font-weight: 600;
  padding: 4px 8px; border-radius: 8px;
}
.resultbar__clear:hover { background: var(--accent-soft); }

/* ============ 工具页：任务优先 ============ */
.tools-hero {
  display: flex; align-items: end; justify-content: space-between; gap: 28px;
  padding: 22px 0 24px;
}
.tools-hero__eyebrow { display: block; margin-bottom: 9px; font-size: 12px; font-weight: 700; color: var(--accent); letter-spacing: .08em; }
.tools-hero__title { font-size: clamp(30px, 4vw, 48px); color: var(--text); }
.tools-hero__sub { margin-top: 12px; color: var(--text-dim); font-size: 14px; }
.tools-hero__meta { flex-shrink: 0; font-size: 12px; color: var(--text-faint); }
.tools-hero__meta strong { color: var(--text); font-size: 16px; }
.task-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-bottom: 34px; }
.task-card {
  --follow-x: 0px; --follow-y: 0px; --spot-x: 50%; --spot-y: 50%;
  position: relative; overflow: hidden; isolation: isolate;
  min-height: 132px; display: flex; flex-direction: column; align-items: flex-start; text-align: left;
  padding: 17px; border: 1px solid var(--border); border-radius: 15px; background: var(--surface);
  color: var(--text); transform: translate3d(var(--follow-x), var(--follow-y), 0);
  transition: transform 180ms var(--ease-out), border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.task-card::after {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0;
  background: radial-gradient(180px circle at var(--spot-x) var(--spot-y), color-mix(in srgb, var(--accent) 12%, transparent), transparent 68%);
  transition: opacity 160ms ease;
}
.task-card > * { position: relative; z-index: 1; }
.task-card:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.task-card:hover::after { opacity: 1; }
.task-card.is-active { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.task-card--primary { background: var(--text); color: var(--surface); border-color: var(--text); }
.task-card--primary.is-active { border-color: var(--accent); }
.task-card__kicker { font-size: 10.5px; opacity: .62; margin-bottom: auto; }
.task-card strong { display: block; font-size: 15px; letter-spacing: -.02em; }
.task-card > span:last-child { margin-top: 5px; font-size: 11px; line-height: 1.45; opacity: .62; }
.grid, .starter-guide, .creator-list, .about-section {
  content-visibility: auto;
  contain-intrinsic-size: 1px 560px;
}
.demand-row { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; margin: -20px 0 32px; }
.demand-row > span { margin-right: 3px; font-size: 11px; font-weight: 700; color: var(--text-faint); }
.demand-row button { padding: 6px 10px; border: 1px solid var(--border); border-radius: 999px; background: transparent; color: var(--text-dim); font-size: 11.5px; }
.demand-row button:hover, .demand-row button.is-active { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.starter-guide { margin: 0 0 34px; padding: 20px; border: 1px solid var(--border); border-radius: 18px; background: color-mix(in srgb, var(--surface) 75%, transparent); }
.starter-guide__head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 15px; }
.starter-guide__head span { display: block; margin-bottom: 4px; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .08em; }
.starter-guide__head h2 { font-size: 18px; }
.starter-guide__head a { color: var(--text-dim); font-size: 11.5px; }
.starter-guide__head a:hover { color: var(--accent); }
.starter-guide__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; }
.starter-guide__grid button { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 10px; padding: 14px; text-align: left; border: 1px solid var(--border); border-radius: 12px; color: var(--text); background: var(--surface); }
.starter-guide__grid button:hover { border-color: var(--accent); }
.starter-guide__grid strong { grid-column: 1 / -1; margin-bottom: 3px; font-size: 13px; }
.starter-guide__grid span { font-size: 10.5px; color: var(--text-faint); }
.tools-section-label { display: flex; align-items: baseline; gap: 12px; padding: 0 0 14px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tools-section-label strong { font-size: 17px; }
.tools-section-label span { font-size: 12px; color: var(--text-faint); }
.smart-filters { display: flex; flex-wrap: wrap; gap: 7px; margin: -4px 0 14px; }
.smart-filters button { border: 1px solid var(--border); border-radius: 999px; padding: 6px 11px; background: transparent; color: var(--text-dim); font-size: 12px; }
.smart-filters button:hover, .smart-filters button.is-active { color: var(--text); background: var(--surface); border-color: var(--border-strong); }

/* ============ 空状态 ============ */
.empty {
  grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-faint);
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.empty svg { opacity: .5; }

/* ============ 长文（关于页） ============ */
.prose { max-width: 760px; }
.prose h2 { font-size: 22px; margin: 30px 0 10px; letter-spacing: -.03em; }
.prose h3 { font-size: 17px; margin: 20px 0 8px; }
.prose p { color: var(--text-dim); margin-bottom: 14px; }
.prose ul { margin: 0 0 14px; padding-left: 20px; color: var(--text-dim); }
.prose li { margin-bottom: 6px; }
.prose b { color: var(--text); font-weight: 600; }
.prose .callout {
  margin: 22px 0; padding: 16px 18px; border-radius: 12px; line-height: 1.7;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--border)); color: var(--text-dim);
}
.prose .callout b { color: var(--accent); }

/* ============ 页脚 ============ */
.footer { margin-top: 80px; border-top: 1px solid var(--border); padding: 30px 0; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 13px; color: var(--text-faint); }
.footer__inner a { color: var(--text-dim); }
.footer__inner a:hover { color: var(--text); }

/* ============ 通用按钮 ============ */
.btn-primary {
  border: 0; border-radius: 12px; padding: 12px 20px; font-size: 14px; font-weight: 600; color: #fff;
  background: var(--accent);
  transition: transform var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.btn-primary:hover { background: var(--accent-press); transform: translateY(-1px); }
.btn-ghost {
  border: 1px solid var(--border-strong); border-radius: 12px; padding: 11px 18px; font-size: 14px; font-weight: 600;
  color: var(--text); background: transparent;
  transition: background var(--t-fast) var(--ease);
}
.btn-ghost:hover { background: var(--surface-2); }

/* ============ 响应式 ============ */
@media (max-width: 1020px) {
  .category-cards { grid-template-columns: repeat(2, 1fr); }
  .task-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .tree { position: static; max-height: none; display: none; }
  .tree.is-open { display: block; margin-bottom: 16px; }
  .tree-toggle { display: inline-flex; }
}
@media (max-width: 760px) {
  .container { padding: 0 16px; }
  .nav__links { display: none; }
  .hero { padding: 44px 0 32px; }
  .hero__search { padding: 6px 6px 6px 16px; }
  .hero__search .btn-primary { display: none; }
  .hero__tags { font-size: 12px; }
  .category-cards { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 16px 12px; padding: 18px; }
  .stat__num { font-size: 28px; }
  .section { padding: 28px 0; }
  .grid { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
  .tools-hero { align-items: flex-start; flex-direction: column; gap: 10px; }
  .task-grid { grid-template-columns: 1fr 1fr; overflow-x: auto; }
  .task-card { min-height: 118px; }
  .starter-guide__head { align-items: flex-start; flex-direction: column; gap: 8px; }
  .starter-guide__grid { grid-template-columns: 1fr; }
}
@media (max-width: 460px) {
  .task-grid { display: flex; margin-right: -16px; padding-right: 16px; scroll-snap-type: x mandatory; }
  .task-card { min-width: 72vw; scroll-snap-align: start; }
  .filterbar__search { flex-basis: 100%; }
  .select { flex: 1; }
  .demand-row { flex-wrap: nowrap; overflow-x: auto; margin-right: -16px; padding-right: 16px; scrollbar-width: none; }
  .demand-row > span, .demand-row button { flex: 0 0 auto; }
}

/* ============ 首页独占首屏（极简搜索） ============ */
body[data-home] .hero {
  min-height: calc(100vh - var(--nav-h) - 120px);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding-top: 24px; padding-bottom: 48px;
}
.hero__browse {
  margin-top: 26px; display: inline-flex; align-items: center; gap: 7px;
  font-size: 13.5px; font-weight: 500; color: var(--text-3);
  transition: color var(--t-fast) var(--ease), gap var(--t-fast) var(--ease);
}
.hero__browse svg { transition: transform var(--t-fast) var(--ease); }
.hero__browse:hover { color: var(--accent); }
.hero__browse:hover svg { transform: translateX(3px); }

/* ============ 页头（分类页等二级页） ============ */
.pagehead { padding: 72px 0 36px; }
.pagehead__title {
  font-size: clamp(30px, 4.4vw, 46px); font-weight: 650; letter-spacing: -.03em; line-height: 1.15;
}
.pagehead__sub { margin-top: 12px; font-size: 15.5px; color: var(--text-3); max-width: 560px; line-height: 1.75; }

/* ============ 需求场景卡片（categories.html） ============ */
.intent-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
  padding-bottom: 88px;
}
.intent-card {
  position: relative; display: flex; flex-direction: column;
  padding: 26px 24px 22px; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--surface); overflow: hidden;
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.intent-card:hover {
  border-color: var(--border-strong); transform: translateY(-3px);
  box-shadow: 0 16px 40px -18px rgba(14,14,16,.16);
}
.intent-card__no {
  position: absolute; top: 18px; right: 20px;
  font-size: 12px; font-weight: 600; letter-spacing: .08em; color: var(--text-4, var(--text-3));
  font-variant-numeric: tabular-nums;
}
.intent-card__icon {
  width: 40px; height: 40px; border-radius: 11px;
  display: grid; place-items: center;
  border: 1px solid var(--border); color: var(--text-2);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.intent-card__icon svg { width: 20px; height: 20px; }
.intent-card:hover .intent-card__icon { color: var(--accent); border-color: var(--accent); }
.intent-card__title { margin-top: 16px; font-size: 17.5px; font-weight: 650; letter-spacing: -.015em; }
.intent-card__desc { margin-top: 7px; font-size: 13.5px; line-height: 1.7; color: var(--text-3); }
.intent-card__chips { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.intent-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px; border: 1px solid var(--border); border-radius: 999px;
  font-size: 12.5px; font-weight: 500; color: var(--text-2); background: var(--surface-2);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.intent-chip:hover { color: var(--accent); border-color: var(--accent); }
.intent-chip__n {
  font-size: 11px; font-weight: 650; color: var(--text-3);
  font-variant-numeric: tabular-nums;
}
.intent-chip:hover .intent-chip__n { color: var(--accent); }

@media (max-width: 1020px) { .intent-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) {
  .intent-grid { grid-template-columns: 1fr; }
  .pagehead { padding: 48px 0 28px; }
}

/* 分类指示芯片（频道页筛选条） */
.chip--cat {
  border: 1px solid var(--accent); color: var(--accent);
  background: transparent; font-weight: 600; cursor: pointer;
  padding: 5px 12px; border-radius: 999px; font-size: 12.5px;
  transition: background var(--t-fast) var(--ease);
}
.chip--cat:hover { background: var(--surface-2); }
.chip--verified { color: #087443; border-color: color-mix(in srgb, #0a9b5a 34%, var(--border)); background: color-mix(in srgb, #0a9b5a 8%, transparent); }
:root[data-theme="dark"] .chip--verified { color: #7fe0ad; }
.side__skillmark { width: 22px; height: 22px; display: grid; place-items: center; flex: 0 0 22px; border: 1px solid currentColor; border-radius: 7px; font-size: 11px; font-weight: 750; }
.skill-page-kicker { display: block; margin-bottom: 8px; color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.skill-page-head { align-items: end; }
.skill-intro { display: flex; gap: 10px 24px; align-items: baseline; margin: -4px 0 24px; padding: 14px 16px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); }
.skill-intro strong { font-size: 13px; white-space: nowrap; }
.skill-intro span { color: var(--text-dim); font-size: 12px; line-height: 1.65; }
.skill-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.skill-card { gap: 11px; cursor: default; }
.skill-snippet { position: relative; padding: 10px 70px 10px 11px; border: 1px solid var(--border); border-radius: 11px; background: var(--surface-2); }
.skill-snippet > span { display: block; margin-bottom: 5px; color: var(--text-faint); font-size: 10px; font-weight: 650; }
.skill-snippet code { display: block; overflow: hidden; color: var(--text); font: 11.5px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; text-overflow: ellipsis; white-space: nowrap; }
.skill-snippet--use code { white-space: normal; min-height: 34px; }
.skill-copy { position: absolute; right: 9px; top: 50%; transform: translateY(-50%); padding: 6px 9px; border: 1px solid var(--border); border-radius: 8px; color: var(--accent); background: var(--surface); font-size: 10.5px; font-weight: 650; }
.skill-copy:hover, .skill-copy.is-copied { color: #fff; border-color: var(--accent); background: var(--accent); }
@media (max-width: 860px) { .skill-grid { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .skill-intro { display: block; } .skill-intro span { display: block; margin-top: 6px; } }

@media (hover: none), (pointer: coarse), (prefers-reduced-motion: reduce) {
  .task-card { transform: none !important; }
  .task-card::after { display: none; }
}