/* ============================================================================
   知微 · AI 信号日报 — 首页样式（v3 · 对齐 design/index.html 设计语言）
   设计基底：黑白灰中性基底 + 单一强调蓝 #4882de + Inter 字族
            细线边框 / 极轻阴影 / 榜单式排版 / 大留白 / 动效克制
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 中性色阶 */
  --bg: #ffffff;
  --bg-soft: #fafafb;
  --bg-tint: #f6f7f9;
  --panel: #ffffff;

  --ink: #0a0c0f;
  --text: #1c2025;
  --text-2: #454c55;
  --text-3: #6b7280;
  --muted: #8b929c;

  --line: #e8eaee;
  --line-soft: #f1f3f5;
  --line-strong: #d7dbe1;

  /* 强调色（唯一） */
  --accent: #4882de;
  --accent-ink: #2a5cba;
  --accent-soft: #eaf1fc;
  --accent-line: #bfd3f3;
  --brand-dot: #4882de;

  /* 深色块（订阅 CTA / 头条视觉头） */
  --dark: #0a0c0f;
  --on-dark: #ffffff;
  --on-dark-2: rgba(255, 255, 255, 0.62);
  --on-dark-line: rgba(255, 255, 255, 0.18);

  --grid-line: rgba(16, 24, 40, 0.045);

  /* 版式 */
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --maxw: 1120px;
  --nav-h: 64px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 22px;

  /* 阴影：只在需要层级时用，绝不厚重 */
  --sh-1: 0 1px 2px rgba(16, 24, 40, 0.04);
  --sh-2: 0 1px 2px rgba(16, 24, 40, 0.04), 0 12px 28px -18px rgba(16, 24, 40, 0.22);
  --sh-3: 0 24px 60px -24px rgba(16, 24, 40, 0.28);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1114;
    --bg-soft: #12151a;
    --bg-tint: #171b21;
    --panel: #14181d;

    --ink: #eceef1;
    --text: #c9cdd3;
    --text-2: #9aa1ab;
    --text-3: #7d848e;
    --muted: #6b727c;

    --line: rgba(255, 255, 255, 0.1);
    --line-soft: rgba(255, 255, 255, 0.06);
    --line-strong: rgba(255, 255, 255, 0.2);

    --accent: #7fa8e8;
    --accent-ink: #93b8f0;
    --accent-soft: rgba(127, 168, 232, 0.12);
    --accent-line: rgba(127, 168, 232, 0.32);
    /* 暗色下品牌方块反白，圆点要用深一档才看得见 */
    --brand-dot: #2a5cba;

    --dark: #0a0c0f;
    --on-dark-2: rgba(255, 255, 255, 0.62);
    --on-dark-line: rgba(255, 255, 255, 0.16);

    --grid-line: rgba(255, 255, 255, 0.05);

    --sh-1: 0 1px 2px rgba(0, 0, 0, 0.3);
    --sh-2: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 28px -18px rgba(0, 0, 0, 0.5);
    --sh-3: 0 24px 60px -24px rgba(0, 0, 0, 0.6);
  }
}

/* ---------- 2. 基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 28px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; }

[hidden] { display: none !important; }

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

::selection { background: #d9e6fc; color: var(--ink); }
@media (prefers-color-scheme: dark) {
  ::selection { background: rgba(127, 168, 232, 0.35); color: #fff; }
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.num {
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.inner {
  width: min(var(--maxw), calc(100% - 48px));
  margin-inline: auto;
}

/* ---------- 3. 入场动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal[data-delay="60"] { transition-delay: 60ms; }
.reveal[data-delay="80"] { transition-delay: 80ms; }
.reveal[data-delay="120"] { transition-delay: 120ms; }
.reveal[data-delay="180"] { transition-delay: 180ms; }
.reveal[data-delay="240"] { transition-delay: 240ms; }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- 4. 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease),
    backdrop-filter 0.3s var(--ease);
}
.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--line);
}

.nav__inner {
  width: min(var(--maxw), calc(100% - 48px));
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: none;
  text-decoration: none;
}
.brand__mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--ink);
  color: var(--bg);
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.brand__mark svg {
  width: 100%;
  height: 100%;
  display: block;
}
.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.brand__text small {
  font-weight: 400;
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}
.nav__menu a {
  padding: 7px 11px;
  border-radius: 7px;
  font-size: 13.5px;
  color: var(--text-2);
  text-decoration: none;
  transition: color 0.18s var(--ease), background 0.18s var(--ease);
}
.nav__menu a:hover {
  color: var(--ink);
  background: var(--bg-tint);
}

.nav__cta {
  flex: none;
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 14px;
  border-radius: var(--r-sm);
  background: var(--ink);
  color: var(--bg);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s var(--ease);
}
.nav__cta:hover { background: var(--accent); color: #fff; }

@media (max-width: 720px) {
  .nav__menu { display: none; }
  .nav__cta { margin-left: auto; }
}

/* ---------- 5. Hero ---------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 88px) 0 88px;
  overflow: hidden;
}

/* 极淡的网格底纹，暗示「聚合/结构化」 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 480px;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(90% 80% at 50% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(90% 80% at 50% 0%, #000 0%, transparent 78%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  width: min(var(--maxw), calc(100% - 48px));
  margin-inline: auto;
  max-width: 880px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.hero__eyebrow::before {
  content: "";
  width: 14px;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}

.hero__title {
  margin-top: 22px;
  font-size: clamp(38px, 5.1vw, 62px);
  line-height: 1.1;
  letter-spacing: -0.035em;
  font-weight: 600;
  color: var(--ink);
}
.hero__title em {
  font-style: normal;
  color: var(--accent);
}

.hero__sub {
  margin-top: 22px;
  max-width: 56ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--text-3);
}

.hero__actions {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero__stats {
  margin-top: 52px;
  display: flex;
  gap: 44px;
  flex-wrap: wrap;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  max-width: 640px;
}
.hero__stat b {
  display: block;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.hero__stat span {
  font-size: 12.5px;
  color: var(--muted);
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 18px;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  white-space: nowrap;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.btn--primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

.btn--ghost {
  background: var(--bg);
  color: var(--text);
  border-color: var(--line);
}
.btn--ghost:hover {
  border-color: var(--line-strong);
  background: var(--bg-soft);
  color: var(--ink);
}

.btn--accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 1px 2px rgba(59, 130, 246, 0.24);
}
.btn--accent:hover { background: #3a6ec4; border-color: #3a6ec4; }

.btn--lg {
  height: 50px;
  padding: 0 24px;
  font-size: 15px;
  border-radius: var(--r-md);
}

/* ---------- 7. 区块通用 ---------- */
.section { padding-block: 96px; }
.section + .section { padding-top: 0; }
.section--tight { padding-block: 72px; }

.section--alt {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.kicker::before {
  content: "";
  width: 14px;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}

.sec-head {
  max-width: 640px;
  margin-bottom: 40px;
}
.sec-title {
  margin-top: 14px;
  font-size: 30px;
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--ink);
}
.sec-sub {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--text-3);
}

/* ---------- 8. 期号头 ---------- */
.issue-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.issue-head__title {
  margin-top: 14px;
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--ink);
}

.issue-head__meta {
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

.issue-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--panel);
  color: var(--text-2);
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.icon-btn:hover:not(:disabled) {
  color: var(--ink);
  border-color: var(--line-strong);
  background: var(--bg-soft);
}
.icon-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.issue-select-wrap { position: relative; }
.issue-select {
  appearance: none;
  -webkit-appearance: none;
  height: 36px;
  padding: 0 32px 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background:
    linear-gradient(45deg, transparent 50%, var(--muted) 50%) calc(100% - 15px) 16px / 5px 5px no-repeat,
    linear-gradient(135deg, var(--muted) 50%, transparent 50%) calc(100% - 10px) 16px / 5px 5px no-repeat,
    var(--panel);
  color: var(--ink);
  font: 500 13px var(--font);
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  transition: border-color 0.2s var(--ease);
}
.issue-select:hover { border-color: var(--line-strong); }

/* ---------- 9. 精选卡片（编辑网格） ---------- */
.picks {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 24px;
}

.pick {
  grid-column: span 3;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}
.pick:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
  box-shadow: var(--sh-2);
}

/* 小号编号（普通卡） */
.pick__index {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 14px;
}
.picks .pick:nth-child(-n+3) .pick__index { color: var(--ink); }

/* 头条：通栏 + 深色视觉头 */
.pick--lead {
  grid-column: span 6;
  padding: 0;
  overflow: hidden;
}
.pick--lead .pick__body {
  padding: 28px 32px 32px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.pick__visual {
  position: relative;
  height: 168px;
  background: linear-gradient(120deg, #0e1216 0%, #1b2430 48%, #24384f 100%);
  overflow: hidden;
  flex: none;
}
.pick__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 18% 82%, rgba(59, 130, 246, 0.55), transparent 42%),
    radial-gradient(circle at 78% 18%, rgba(255, 255, 255, 0.14), transparent 46%);
}
.pick__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: linear-gradient(160deg, #000, transparent 80%);
  mask-image: linear-gradient(160deg, #000, transparent 80%);
}

.pick__badge {
  position: absolute;
  left: 24px;
  bottom: 20px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 11px;
  letter-spacing: 0.06em;
}

.pick__body { display: flex; flex-direction: column; gap: 12px; flex: 1; min-width: 0; }

/* 标签 */
.pick__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.pick__tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 9px;
  border-radius: 5px;
  background: var(--bg-tint);
  color: var(--text-2);
  font-size: 12px;
  white-space: nowrap;
}
.pick__tag--cat {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-3);
}

.pick__title {
  font-size: 18px;
  line-height: 1.5;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.pick__title a {
  text-decoration: none;
  color: inherit;
}
.pick:hover .pick__title a {
  text-decoration: underline;
  text-decoration-color: var(--accent-line);
  text-underline-offset: 3px;
}
.pick--lead .pick__title {
  font-size: clamp(22px, 2.4vw, 29px);
  line-height: 1.32;
  letter-spacing: -0.028em;
}

.pick__summary {
  margin-top: 2px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-3);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.pick--lead .pick__summary {
  -webkit-line-clamp: 4;
  font-size: 14.5px;
  line-height: 1.85;
}

.pick__foot {
  margin-top: auto;
  padding-top: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  flex-wrap: wrap;
}
.pick__foot .dot { opacity: 0.5; }
.pick__original {
  margin-left: auto;
  color: var(--accent-ink);
  text-decoration: none;
  font-weight: 500;
  white-space: nowrap;
  font-size: 12.5px;
}
.pick__original:hover { text-decoration: underline; }

@media (max-width: 900px) {
  .pick, .pick--lead { grid-column: span 6; }
  .pick--lead .pick__body { padding: 22px 24px 26px; }
  .pick__visual { height: 140px; }
}

/* ---------- 10. 展开全部 ---------- */
.more-toggle { text-align: center; margin-top: 36px; }
.more-btn {
  height: 42px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--bg);
  color: var(--text-2);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.more-btn:hover {
  border-color: var(--line-strong);
  color: var(--ink);
  background: var(--bg-soft);
}
.more-btn[aria-expanded="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}

.more-list {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}
.more-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 15px 6px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  transition: background 0.2s var(--ease), padding 0.2s var(--ease);
}
.more-row:hover {
  background: var(--bg-soft);
  padding-inline: 14px;
}
.more-row__title {
  flex: 1;
  min-width: 0;
  color: var(--ink);
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.more-row__title:hover {
  text-decoration: underline;
  text-decoration-color: var(--accent-line);
  text-underline-offset: 3px;
}
.more-row__meta {
  color: var(--muted);
  font-size: 12.5px;
  white-space: nowrap;
}

/* ---------- 11. 一周回看（榜单式） ---------- */
.week { margin-top: 4px; border-top: 1px solid var(--ink); }

.week-loading {
  color: var(--text-3);
  font-size: 14.5px;
  padding: 32px 0;
  text-align: center;
}

.week-row {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 28px;
  padding: 24px 6px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s var(--ease), padding 0.2s var(--ease);
}
.week-row:hover {
  background: var(--panel);
  padding-inline: 14px;
}

.week-row__date {
  font-size: 13px;
  line-height: 1.4;
}
.week-row__date b {
  display: block;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.week-row__date span { color: var(--muted); font-size: 12px; }

.week-row__items {
  display: flex;
  flex-direction: column;
  gap: 2px;
  justify-content: center;
}

.week-item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 7px 10px;
  margin: 0 -10px;
  border-radius: var(--r-sm);
  text-decoration: none;
  transition: background 0.15s var(--ease);
}
.week-item:hover { background: var(--bg-tint); }

.week-item__title {
  flex: 1;
  min-width: 0;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.012em;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.week-item:hover .week-item__title {
  text-decoration: underline;
  text-decoration-color: var(--accent-line);
  text-underline-offset: 3px;
}

.week-item__src {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.week-empty {
  color: var(--text-3);
  font-size: 14.5px;
  padding: 24px 6px;
}

@media (max-width: 720px) {
  .week-row { grid-template-columns: 1fr; gap: 12px; }
  .week-row__date { display: flex; align-items: baseline; gap: 10px; }
  .week-row__date b { font-size: 22px; }
  .week-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 3px;
    margin: 0;
    padding-inline: 0;
  }
  .week-item__title { white-space: normal; }
  .week-item:hover { background: none; }
}

/* ---------- 12. 平台能力（合并细线网格） ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.cell {
  background: var(--panel);
  padding: 30px 26px 32px;
  display: flex;
  flex-direction: column;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}
.cell:hover {
  background: var(--bg-soft);
  transform: translateY(-2px);
}

.cell--wide { grid-column: span 2; }

.cell__icon {
  width: 34px;
  height: 34px;
  color: var(--ink);
  margin-bottom: 22px;
}
.cell__icon .knob { fill: var(--panel); }

.cell__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 9px;
}
.cell h3 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.cell p {
  font-size: 13.5px;
  color: var(--text-3);
  line-height: 1.8;
}
.cell__foot {
  margin-top: 20px;
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.chip {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 9px;
  border-radius: 5px;
  font-size: 11.5px;
  white-space: nowrap;
  font-weight: 500;
}
.chip--live {
  background: var(--accent-soft);
  color: var(--accent-ink);
}
.chip--plan {
  border: 1px dashed var(--line-strong);
  color: var(--muted);
  font-weight: 400;
}

/* 规划中：底色微降，不做虚线外框（保持网格完整） */
.cell--plan {
  background: var(--bg-soft);
}
.cell--plan:hover { background: var(--bg-tint); }
.cell--plan .cell__icon { color: var(--text-3); }

@media (max-width: 900px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .bento { grid-template-columns: 1fr; }
  .cell--wide { grid-column: span 1; }
}

/* ---------- 13. 订阅（深色 CTA 块） ---------- */
.section--cta { padding-block: 96px; }

.cta {
  position: relative;
  border-radius: var(--r-xl);
  background: var(--dark);
  color: var(--on-dark);
  padding: 60px 56px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}
@media (prefers-color-scheme: dark) {
  .cta { border: 1px solid var(--line-strong); }
}

.cta::before {
  content: "";
  position: absolute;
  right: -120px;
  top: -160px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.32), transparent 62%);
  pointer-events: none;
}

.cta__copy {
  position: relative;
  max-width: 560px;
}
.cta__copy h2 {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.32;
  letter-spacing: -0.03em;
  font-weight: 600;
  color: #fff;
}
.cta__copy p {
  margin-top: 14px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--on-dark-2);
}

.cta__actions {
  position: relative;
  flex: 1;
  min-width: 320px;
  max-width: 520px;
}

.subscribe__form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.subscribe__input {
  flex: 1;
  min-width: 200px;
  height: 50px;
  padding: 0 18px;
  border: 1px solid var(--on-dark-line);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font: 400 15px var(--font);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.subscribe__input::placeholder { color: rgba(255, 255, 255, 0.38); }
.subscribe__input:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.1);
}

.cta .btn--accent {
  height: 50px;
  padding: 0 24px;
  font-size: 15px;
  border-radius: var(--r-md);
  box-shadow: 0 8px 24px -10px rgba(59, 130, 246, 0.8);
}

.hp {
  position: absolute;
  left: -9999px;
  width: 1px; height: 1px;
  overflow: hidden;
}

.subscribe__status {
  width: 100%;
  font-size: 13px;
  color: var(--on-dark-2);
  min-height: 1.5em;
  padding-left: 4px;
}
.subscribe__status[data-state="ok"] { color: #7fd8a0; }
.subscribe__status[data-state="error"] { color: #ff9d9d; }

@media (max-width: 800px) {
  .cta { padding: 44px 32px; }
  .cta__actions { min-width: 0; }
}

/* ---------- 14. 页脚 ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 52px 0 36px;
  background: var(--bg-soft);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.footer__brand p {
  margin-top: 14px;
  max-width: 380px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-3);
}

.footer__nav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  align-items: center;
}
.footer__nav a {
  font-size: 13px;
  color: var(--text-3);
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 7px;
  transition: color 0.18s var(--ease), background 0.18s var(--ease);
}
.footer__nav a:hover {
  color: var(--ink);
  background: var(--bg-tint);
}

.footer__legal {
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 15. 占位 / 加载 ---------- */
.picks[aria-busy="true"] { min-height: 300px; }

.skeleton {
  grid-column: span 3;
  height: 220px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(100deg, var(--panel) 40%, var(--bg-tint) 50%, var(--panel) 60%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
}
.skeleton:first-child { grid-column: span 6; }
@keyframes shimmer {
  to { background-position: -200% 0; }
}

.error-box {
  grid-column: span 6;
  padding: 40px;
  text-align: center;
  color: var(--text-2);
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-lg);
}