/*!
 * 黑豹加速器 · 站点样式
 * 覆盖：首页全部区块 + 内页正文 + 移动端
 * 依赖：无
 */

/* ============ 设计变量 ============ */
:root {
  --hb-ink: #0a0b0d;
  --hb-ink-2: #14161c;
  --hb-ink-3: #1d2027;
  --hb-paper: #ffffff;
  --hb-paper-2: #f6f7f9;
  --hb-line: #e6e8ec;
  --hb-line-dark: rgba(255, 255, 255, .1);
  --hb-text: #14161c;
  --hb-muted: #5b6472;
  --hb-muted-dark: rgba(255, 255, 255, .62);
  --hb-accent: #ffb020;
  --hb-accent-2: #ff8a00;
  --hb-accent-soft: rgba(255, 176, 32, .12);
  --hb-radius: 18px;
  --hb-radius-sm: 12px;
  --hb-max: 1180px;
  --hb-shadow: 0 1px 2px rgba(16, 18, 22, .04), 0 12px 32px -12px rgba(16, 18, 22, .12);
  --hb-shadow-lg: 0 2px 4px rgba(16, 18, 22, .04), 0 28px 60px -24px rgba(16, 18, 22, .28);
  --hb-font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--hb-font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--hb-text);
  background: var(--hb-paper);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; transition: color .2s ease, opacity .2s ease; }
a:hover { color: var(--hb-accent-2); }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.02em;
}

p { margin: 0; }

ul, ol { margin: 0; padding: 0; }

button { font: inherit; cursor: pointer; }

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

/* ============ 栅格 ============ */
.heibao-shell {
  width: 100%;
  max-width: var(--hb-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ============ 顶栏 ============ */
.heibao-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 11, 13, .86);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.heibao-header-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 68px;
}

.heibao-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.heibao-logo img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: contain;
  background: rgba(255, 255, 255, .06);
  padding: 4px;
}

.heibao-brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.heibao-brand-copy strong {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: .02em;
  color: #fff;
}

.heibao-brand-copy strong span { color: var(--hb-accent); }

.heibao-brand-copy small {
  font-size: 9px;
  letter-spacing: .18em;
  color: rgba(255, 255, 255, .45);
  text-transform: uppercase;
  margin-top: 2px;
}

/* 导航 */
.heibao-primary-nav { margin-left: auto; }

.heibao-nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.heibao-nav-menu li { list-style: none; }

.heibao-nav-menu a {
  display: block;
  padding: 8px 12px;
  font-size: 14.5px;
  color: rgba(255, 255, 255, .78);
  border-radius: 8px;
  white-space: nowrap;
}

.heibao-nav-menu a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .08);
}

.heibao-login {
  flex: 0 0 auto;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 600;
  color: #0a0b0d;
  background: var(--hb-accent);
  border-radius: 999px;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.heibao-login:hover {
  color: #0a0b0d;
  background: #ffc247;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -8px rgba(255, 176, 32, .8);
}

/* 汉堡按钮 */
.heibao-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 42px;
  height: 42px;
  margin-left: auto;
  padding: 0 10px;
  background: rgba(255, 255, 255, .08);
  border: 0;
  border-radius: 10px;
}

.heibao-nav-toggle span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}

.heibao-nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.heibao-nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.heibao-nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ============ 首页：Hero ============ */
.heibao-home { display: block; }

.heibao-hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 96px;
  background:
    radial-gradient(900px 480px at 78% 18%, rgba(255, 176, 32, .16), transparent 62%),
    radial-gradient(700px 420px at 8% 88%, rgba(80, 130, 255, .12), transparent 66%),
    linear-gradient(160deg, #0a0b0d 0%, #111318 52%, #0a0b0d 100%);
  color: #fff;
}

.heibao-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .032) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(70% 60% at 50% 40%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 40%, #000 20%, transparent 78%);
  pointer-events: none;
}

.heibao-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 56px;
  align-items: center;
}

.heibao-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--hb-accent);
  margin-bottom: 16px;
}

.heibao-hero-copy h1 {
  font-size: clamp(38px, 5.4vw, 66px);
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 22px;
}

.heibao-hero-copy h1 span { color: var(--hb-accent); }

.heibao-hero-copy p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--hb-muted-dark);
  max-width: 34em;
  margin-bottom: 30px;
}

.heibao-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.heibao-platform-note {
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
  letter-spacing: .02em;
}

/* 按钮 */
.heibao-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 999px;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
}

.heibao-button span { transition: transform .18s ease; }
.heibao-button:hover span { transform: translateX(3px); }

.heibao-button-primary {
  color: #0a0b0d;
  background: linear-gradient(135deg, #ffc247, var(--hb-accent));
  box-shadow: 0 12px 30px -12px rgba(255, 176, 32, .85);
}

.heibao-button-primary:hover {
  color: #0a0b0d;
  transform: translateY(-2px);
  box-shadow: 0 18px 38px -14px rgba(255, 176, 32, .95);
}

.heibao-button-ghost {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .04);
}

.heibao-button-ghost:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, .42);
  background: rgba(255, 255, 255, .1);
}

/* Hero 右侧视觉 */
.heibao-panther-stage {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 460px;
  margin-left: auto;
  display: grid;
  place-items: center;
}

.heibao-orb {
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 45%, rgba(255, 176, 32, .5), rgba(255, 138, 0, .12) 42%, transparent 66%),
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, .14), transparent 58%);
  filter: blur(4px);
  animation: hb-orb 7s ease-in-out infinite;
}

.heibao-panther {
  position: relative;
  width: 58%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: linear-gradient(155deg, #22252d, #0c0d10 62%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .14),
    0 30px 70px -30px rgba(0, 0, 0, .9);
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .1);
}

.heibao-panther i {
  width: 46%;
  height: 46%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff, var(--hb-accent) 34%, #b96b00 78%);
  box-shadow: 0 0 60px rgba(255, 176, 32, .7);
  animation: hb-pulse 3.2s ease-in-out infinite;
}

.heibao-speed-line {
  position: absolute;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, rgba(255, 176, 32, .85), transparent);
  animation: hb-line 3.6s linear infinite;
}

.heibao-speed-line-one { top: 30%; left: 2%; width: 44%; }
.heibao-speed-line-two { bottom: 28%; right: 2%; width: 38%; animation-delay: 1.4s; }

.heibao-float-badge {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  font-size: 12.5px;
  font-weight: 600;
  color: #fff;
  background: rgba(20, 22, 28, .82);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 999px;
  backdrop-filter: blur(8px);
  white-space: nowrap;
}

.heibao-badge-top { top: 12%; left: -4%; animation: hb-float 5s ease-in-out infinite; }
.heibao-badge-bottom { bottom: 14%; right: -2%; animation: hb-float 5s ease-in-out infinite .8s; }

/* 数据条 */
.heibao-stats {
  position: relative;
  z-index: 1;
  margin-top: 64px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}

.heibao-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.heibao-stats-grid > div,
.heibao-stats-grid > article {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.heibao-stats-grid strong,
.heibao-stats-grid b {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -.02em;
}

.heibao-stats-grid span,
.heibao-stats-grid small {
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}

/* ============ 通用区块 ============ */
.heibao-section {
  padding: 92px 0;
  background: var(--hb-paper);
}

.heibao-section:nth-of-type(even) { background: var(--hb-paper-2); }

.heibao-section-heading {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}

.heibao-section-heading h2 {
  font-size: clamp(27px, 3.6vw, 42px);
  margin-bottom: 14px;
}

.heibao-section-heading p {
  font-size: 16px;
  color: var(--hb-muted);
}

.heibao-heading-split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  max-width: none;
  text-align: left;
}

.heibao-heading-split > div { max-width: 640px; }

.heibao-text-link {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--hb-accent-2);
  white-space: nowrap;
}

.heibao-text-link:hover { color: #d96f00; }

/* 卡片网格 */
.heibao-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.heibao-feature-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 30px 26px;
  background: var(--hb-paper);
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius);
  box-shadow: var(--hb-shadow);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.heibao-feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 176, 32, .5);
  box-shadow: var(--hb-shadow-lg);
}

.heibao-feature-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 4px;
  font-size: 20px;
  border-radius: 13px;
  background: var(--hb-accent-soft);
  color: #b96b00;
}

.heibao-feature-card h3 {
  font-size: 18px;
  font-weight: 700;
}

.heibao-feature-card p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--hb-muted);
}

/* ============ 深色区块 ============ */
.heibao-dark-section {
  background: linear-gradient(165deg, #0a0b0d, #14161c 70%, #0a0b0d);
  color: #fff;
}

.heibao-dark-section .heibao-section-heading h2,
.heibao-dark-section h3 { color: #fff; }

.heibao-dark-section .heibao-section-heading p { color: var(--hb-muted-dark); }

.heibao-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
}

.heibao-split .heibao-section-heading {
  text-align: left;
  margin: 0 0 26px;
  max-width: none;
}

.heibao-split > div:first-child h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  margin-bottom: 14px;
  color: #fff;
}

.heibao-split > div:first-child p {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--hb-muted-dark);
  margin-bottom: 24px;
  max-width: 34em;
}

.heibao-checklist {
  list-style: none;
  display: grid;
  gap: 12px;
  margin-bottom: 28px;
}

.heibao-checklist li {
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  color: rgba(255, 255, 255, .82);
}

.heibao-checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  font-size: 11px;
  font-weight: 700;
  color: #0a0b0d;
  background: var(--hb-accent);
  border-radius: 50%;
}

/* 应用卡片（手机示意） */
.heibao-app-card {
  max-width: 380px;
  margin: 0 auto;
  padding: 26px;
  border-radius: 26px;
  background: linear-gradient(170deg, rgba(255, 255, 255, .09), rgba(255, 255, 255, .03));
  border: 1px solid rgba(255, 255, 255, .12);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .95);
}

.heibao-app-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
  margin-bottom: 18px;
}

.heibao-connected {
  display: grid;
  place-items: center;
  padding: 4px 0 20px;
}

.heibao-connected-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  font-size: 11.5px;
  font-weight: 600;
  color: #7ef0b2;
  background: rgba(52, 211, 153, .12);
  border: 1px solid rgba(52, 211, 153, .3);
  border-radius: 999px;
}

.heibao-ring {
  position: relative;
  width: 186px;
  height: 186px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  padding: 6px;
  background: conic-gradient(from 210deg, var(--hb-accent) 0deg, #ff8a00 210deg, rgba(255, 255, 255, .1) 210deg);
  box-shadow: 0 0 40px -12px rgba(255, 176, 32, .5);
}

.heibao-ring > div {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 32%, #191c23, #0d0f13);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  text-align: center;
}

.heibao-ring b {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
}

.heibao-ring small {
  font-size: 11.5px;
  color: rgba(255, 255, 255, .55);
}

.heibao-app-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, .55);
}

.heibao-app-metrics > div,
.heibao-app-metrics > span {
  padding: 12px 14px;
  background: rgba(255, 255, 255, .05);
  border-radius: 12px;
}

.heibao-app-metrics strong {
  display: block;
  font-size: 17px;
  color: #fff;
  margin-top: 2px;
}

/* ============ 套餐 ============ */
.heibao-plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
}

/* 套餐页脚说明 */
.heibao-plan-note {
  margin: 24px 0 0;
  text-align: center;
  font-size: 14px;
  line-height: 1.7;
  color: var(--hb-muted);
}

.heibao-plan {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 32px 28px;
  background: var(--hb-paper);
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius);
  box-shadow: var(--hb-shadow);
}

.heibao-plan h3 { font-size: 19px; }

.heibao-plan-tag {
  position: absolute;
  top: -12px;
  right: 22px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 700;
  color: #0a0b0d;
  background: var(--hb-accent);
  border-radius: 999px;
  box-shadow: 0 8px 20px -10px rgba(255, 176, 32, .9);
}

.heibao-plan-hot {
  border-color: rgba(255, 176, 32, .65);
  box-shadow: 0 24px 60px -28px rgba(255, 176, 32, .55);
}

.heibao-plan > p {
  font-size: 14.5px;
  color: var(--hb-muted);
}

.heibao-plan ul {
  list-style: none;
  display: grid;
  gap: 9px;
  margin: 8px 0 20px;
  font-size: 14.5px;
  color: #2b303a;
}

.heibao-plan ul li {
  position: relative;
  padding-left: 22px;
}

.heibao-plan ul li::before {
  content: "·";
  position: absolute;
  left: 8px;
  top: -2px;
  font-size: 22px;
  color: var(--hb-accent);
  line-height: 1;
}

.heibao-plan-button {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 20px;
  font-size: 15px;
  font-weight: 700;
  color: #0a0b0d;
  background: var(--hb-paper-2);
  border: 1px solid var(--hb-line);
  border-radius: 999px;
  transition: all .2s ease;
}

.heibao-plan-button:hover {
  background: var(--hb-accent);
  border-color: var(--hb-accent);
  color: #0a0b0d;
  transform: translateY(-2px);
}

.heibao-plan-hot .heibao-plan-button {
  background: linear-gradient(135deg, #ffc247, var(--hb-accent));
  border-color: transparent;
  box-shadow: 0 12px 26px -12px rgba(255, 176, 32, .9);
}

/* 价格 */
.heibao-plan > strong {
  display: block;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--hb-ink);
  line-height: 1.1;
  margin: 2px 0 6px;
}

.heibao-plan > strong small {
  font-size: 14px;
  font-weight: 500;
  color: var(--hb-muted);
  margin-left: 4px;
}

/* ============ 设备 ============ */
.heibao-devices-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 48px;
  align-items: center;
}

.heibao-devices-layout > div:first-child h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  margin-bottom: 14px;
}

.heibao-devices-layout > div:first-child p {
  font-size: 15.5px;
  color: var(--hb-muted);
  margin-bottom: 22px;
}

.heibao-device-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.heibao-device-grid > a,
.heibao-device-grid > div,
.heibao-device-grid > article {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 28px 16px;
  text-align: center;
  background: var(--hb-paper);
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius);
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.heibao-device-grid > *:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 176, 32, .55);
  box-shadow: var(--hb-shadow-lg);
}

.heibao-device-grid b,
.heibao-device-grid span {
  font-size: 24px;
  font-weight: 400;
  color: var(--hb-accent-2);
  line-height: 1;
}

.heibao-device-grid strong {
  font-size: 16px;
  font-weight: 700;
}

.heibao-device-grid small {
  font-size: 12.5px;
  color: var(--hb-muted);
}

/* ============ 场景 ============ */
.heibao-scenario-section { background: var(--hb-paper-2); }
.heibao-scenario-card { align-items: flex-start; }

/* ============ 资讯 ============ */
.heibao-insights-section { background: var(--hb-paper); }

.heibao-insight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.heibao-insight-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--hb-paper);
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius);
  box-shadow: var(--hb-shadow);
  transition: transform .22s ease, box-shadow .22s ease;
}

.heibao-insight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--hb-shadow-lg);
}

.heibao-insight-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 24px 26px;
}

.heibao-insight-body > *:first-child {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--hb-muted);
}

.heibao-insight-body h3 {
  font-size: 17px;
  line-height: 1.45;
}

.heibao-insight-body p {
  font-size: 14px;
  color: var(--hb-muted);
}

.heibao-insight-body a {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--hb-accent-2);
}

/* 无文章时的占位卡 */
.heibao-insight-empty {
  grid-column: 1 / -1;
  padding: 44px 28px;
  text-align: center;
  background: var(--hb-paper-2);
  border: 1px dashed var(--hb-line);
  border-radius: var(--hb-radius);
}

.heibao-insight-empty > span {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--hb-muted);
}

.heibao-insight-empty h3 {
  font-size: 17px;
  margin: 10px 0 6px;
}

.heibao-insight-empty p {
  font-size: 14px;
  color: var(--hb-muted);
}

/* ============ 用户评价 ============ */
.heibao-quote-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.heibao-quote-grid article {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 26px;
  background: var(--hb-paper);
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius);
}

.heibao-quote-grid article > span {
  color: var(--hb-accent);
  letter-spacing: .12em;
  font-size: 14px;
}

.heibao-quote-grid p {
  font-size: 15px;
  line-height: 1.8;
  color: #2b303a;
}

.heibao-quote-grid b {
  font-size: 14px;
  font-weight: 700;
}

.heibao-quote-grid small {
  font-size: 12.5px;
  color: var(--hb-muted);
}

/* ============ FAQ ============ */
.heibao-faq-section { background: var(--hb-paper-2); }

.heibao-faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.heibao-faq-list details {
  background: var(--hb-paper);
  border: 1px solid var(--hb-line);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.heibao-faq-list details[open] {
  border-color: rgba(255, 176, 32, .55);
  box-shadow: var(--hb-shadow);
}

.heibao-faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-size: 15.5px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.heibao-faq-list summary::-webkit-details-marker { display: none; }

.heibao-faq-list summary span {
  flex: 0 0 auto;
  color: var(--hb-accent-2);
  font-size: 20px;
  line-height: 1;
  transition: transform .2s ease;
}

.heibao-faq-list details[open] summary span { transform: rotate(45deg); }

.heibao-faq-list details > p {
  padding: 0 22px 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--hb-muted);
}

/* ============ CTA ============ */
.heibao-cta {
  padding: 88px 0;
  text-align: center;
  color: #fff;
  background:
    radial-gradient(700px 320px at 50% 0%, rgba(255, 176, 32, .22), transparent 68%),
    linear-gradient(160deg, #0a0b0d, #16181f);
}

.heibao-cta h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  margin-bottom: 14px;
}

.heibao-cta p {
  font-size: 16px;
  color: var(--hb-muted-dark);
  margin-bottom: 28px;
}

.heibao-cta .heibao-eyebrow { color: var(--hb-accent); }

/* ============ 页脚 ============ */
.heibao-footer {
  padding: 56px 0 26px;
  color: rgba(255, 255, 255, .72);
  background: #0a0b0d;
  border-top: 1px solid rgba(255, 255, 255, .08);
}

.heibao-footer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.heibao-footer-row nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 14px;
}

.heibao-footer-row nav a { color: rgba(255, 255, 255, .72); }
.heibao-footer-row nav a:hover { color: var(--hb-accent); }

.heibao-footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 22px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .42);
}

/* ============ 内页（页面/文章） ============ */
.site-main { display: block; }

.heibao-page,
.entry-content,
.page-content {
  max-width: 820px;
  margin: 0 auto;
  padding: 64px 20px 88px;
  font-size: 16px;
  line-height: 1.9;
  color: #22262e;
}

.heibao-page h1,
.entry-content h1,
.entry-title {
  font-size: clamp(28px, 4vw, 42px);
  margin-bottom: 22px;
  letter-spacing: -.02em;
}

.entry-content h2 {
  font-size: clamp(21px, 2.6vw, 27px);
  margin: 44px 0 14px;
  padding-top: 8px;
}

.entry-content h3 {
  font-size: 18px;
  margin: 30px 0 10px;
}

.entry-content p { margin: 0 0 16px; }

.entry-content ul,
.entry-content ol {
  margin: 0 0 18px;
  padding-left: 22px;
}

.entry-content ul { list-style: disc; }
.entry-content ol { list-style: decimal; }
.entry-content li { margin-bottom: 8px; }

.entry-content a {
  color: #b96b00;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.entry-content blockquote {
  margin: 24px 0;
  padding: 16px 22px;
  border-left: 3px solid var(--hb-accent);
  background: var(--hb-paper-2);
  border-radius: 0 12px 12px 0;
  color: var(--hb-muted);
}

.entry-content img { border-radius: 14px; margin: 20px 0; }

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14.5px;
}

.entry-content th,
.entry-content td {
  padding: 12px 14px;
  border: 1px solid var(--hb-line);
  text-align: left;
}

.entry-content th { background: var(--hb-paper-2); font-weight: 700; }

.entry-meta {
  font-size: 13px;
  color: var(--hb-muted);
  margin-bottom: 26px;
}

/* 404 / 归档 */
.error-404,
.no-results,
.archive .page-header {
  max-width: 820px;
  margin: 0 auto;
  padding: 72px 20px;
  text-align: center;
}

/* ============ 文章 / 内页版式 ============ */
.heibao-header.is-scrolled {
  background: rgba(10, 11, 13, .97);
  box-shadow: 0 10px 30px -22px rgba(0, 0, 0, .95);
}

.heibao-article { display: block; }

.heibao-article-hero {
  padding: 56px 0 44px;
  color: #fff;
  background:
    radial-gradient(600px 260px at 22% 0%, rgba(255, 176, 32, .16), transparent 66%),
    linear-gradient(160deg, #0a0b0d, #16181f);
}

.heibao-article-hero-inner { max-width: 820px; }

.heibao-article-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
  margin-bottom: 18px;
}

.heibao-article-breadcrumb a { color: rgba(255, 255, 255, .72); }
.heibao-article-breadcrumb a:hover { color: var(--hb-accent); }

.heibao-article-category {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--hb-accent);
}

.heibao-article-hero h1 {
  font-size: clamp(27px, 4vw, 42px);
  margin-bottom: 16px;
}

.heibao-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .55);
}

.heibao-article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
  padding-top: 52px;
  padding-bottom: 88px;
}

.heibao-article-cover { margin: 0 0 28px; }

.heibao-article-cover img {
  width: 100%;
  border-radius: var(--hb-radius);
}

.heibao-article-content,
.heibao-page-content {
  font-size: 16px;
  line-height: 1.9;
  color: #22262e;
}

.heibao-article-content h2 {
  font-size: clamp(21px, 2.6vw, 27px);
  margin: 44px 0 14px;
}

.heibao-article-content h3 {
  font-size: 18px;
  margin: 30px 0 10px;
}

.heibao-article-content p { margin: 0 0 16px; }

.heibao-article-content ul,
.heibao-article-content ol {
  margin: 0 0 18px;
  padding-left: 22px;
}

.heibao-article-content ul { list-style: disc; }
.heibao-article-content ol { list-style: decimal; }
.heibao-article-content li { margin-bottom: 8px; }

.heibao-article-content a {
  color: #b96b00;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.heibao-article-content img { border-radius: 14px; margin: 20px 0; }

.heibao-article-content blockquote {
  margin: 24px 0;
  padding: 16px 22px;
  border-left: 3px solid var(--hb-accent);
  background: var(--hb-paper-2);
  border-radius: 0 12px 12px 0;
  color: var(--hb-muted);
}

.heibao-article-end {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--hb-line);
  font-size: 13px;
  color: var(--hb-muted);
}

.heibao-article-end > span { letter-spacing: .18em; font-size: 11px; }

.heibao-article-end a { font-weight: 600; color: var(--hb-accent-2); }

.heibao-article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  font-size: 13px;
  color: var(--hb-muted);
}

.heibao-article-tags a {
  padding: 5px 12px;
  font-size: 12.5px;
  background: var(--hb-paper-2);
  border-radius: 999px;
}

/* 侧栏 */
.heibao-article-aside {
  position: sticky;
  top: 92px;
  display: grid;
  gap: 20px;
}

.heibao-aside-card {
  padding: 26px 24px;
  color: #fff;
  background: linear-gradient(160deg, #14161c, #0a0b0d);
  border-radius: var(--hb-radius);
  border: 1px solid rgba(255, 255, 255, .08);
}

.heibao-aside-card h2 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #fff;
}

.heibao-aside-card p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--hb-muted-dark);
  margin-bottom: 18px;
}

.heibao-aside-card .heibao-button {
  width: 100%;
  justify-content: center;
  padding: 12px 18px;
  font-size: 14px;
}

.heibao-aside-latest {
  padding: 22px 22px 24px;
  background: var(--hb-paper);
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius);
}

.heibao-aside-latest h3 {
  font-size: 14px;
  margin-bottom: 14px;
  color: var(--hb-muted);
  font-weight: 600;
}

.heibao-aside-latest a {
  display: block;
  padding: 10px 0;
  border-top: 1px solid var(--hb-line);
}

.heibao-aside-latest a:first-of-type { border-top: 0; }

.heibao-aside-latest time {
  display: block;
  font-size: 12px;
  color: var(--hb-muted);
  margin-bottom: 3px;
}

.heibao-aside-latest strong {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}

/* 列表页文章卡 */
.heibao-post-preview {
  padding: 28px 0;
  border-bottom: 1px solid var(--hb-line);
}

.heibao-post-preview-meta {
  font-size: 12.5px;
  color: var(--hb-muted);
  letter-spacing: .06em;
}

.heibao-post-preview h2 {
  font-size: 21px;
  margin: 8px 0 10px;
}

.heibao-post-preview p {
  font-size: 14.5px;
  color: var(--hb-muted);
  margin-bottom: 10px;
}

.heibao-post-preview > a {
  font-size: 14px;
  font-weight: 600;
  color: var(--hb-accent-2);
}

/* ============ 动效 ============ */
@keyframes hb-orb {
  0%, 100% { transform: scale(1); opacity: .9; }
  50% { transform: scale(1.06); opacity: 1; }
}

@keyframes hb-pulse {
  0%, 100% { box-shadow: 0 0 40px rgba(255, 176, 32, .55); }
  50% { box-shadow: 0 0 80px rgba(255, 176, 32, .95); }
}

@keyframes hb-line {
  0% { transform: translateX(-30%); opacity: 0; }
  30% { opacity: 1; }
  100% { transform: translateX(30%); opacity: 0; }
}

@keyframes hb-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* ============ 响应式：平板 ============ */
@media (max-width: 980px) {
  .heibao-hero { padding: 64px 0 72px; }

  .heibao-hero-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .heibao-panther-stage {
    margin: 0 auto;
    max-width: 380px;
  }

  .heibao-split { grid-template-columns: 1fr; gap: 40px; }

  .heibao-devices-layout { grid-template-columns: 1fr; gap: 32px; }

  .heibao-feature-grid,
  .heibao-plan-grid,
  .heibao-insight-grid,
  .heibao-quote-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .heibao-device-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .heibao-stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }

  .heibao-section { padding: 72px 0; }

  .heibao-heading-split { flex-direction: column; align-items: flex-start; }

  .heibao-article-layout {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 40px;
  }

  .heibao-article-aside { position: static; }
}

/* ============ 响应式：手机 ============ */
@media (max-width: 720px) {
  body { font-size: 15.5px; }

  .heibao-shell { padding: 0 16px; }

  .heibao-header-inner { min-height: 60px; gap: 10px; }

  .heibao-nav-toggle { display: flex; }

  .heibao-login {
    margin-left: 8px;
    padding: 8px 14px;
    font-size: 13px;
  }

  .heibao-primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: 12px 16px 18px;
    background: rgba(10, 11, 13, .98);
    border-bottom: 1px solid rgba(255, 255, 255, .1);
  }

  .heibao-primary-nav.is-open { display: block; }

  .heibao-nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .heibao-nav-menu a { padding: 12px 8px; font-size: 15px; }

  .heibao-hero { padding: 48px 0 56px; }

  .heibao-hero-copy h1 { font-size: clamp(30px, 9vw, 42px); }

  .heibao-hero-copy p { font-size: 15.5px; }

  .heibao-actions { flex-direction: column; align-items: stretch; }

  .heibao-button { justify-content: center; padding: 14px 20px; }

  .heibao-stats { margin-top: 44px; }

  .heibao-stats-grid strong { font-size: 20px; }

  .heibao-feature-grid,
  .heibao-plan-grid,
  .heibao-insight-grid,
  .heibao-quote-grid,
  .heibao-device-grid { grid-template-columns: 1fr; }

  .heibao-section { padding: 56px 0; }

  .heibao-section-heading { margin-bottom: 32px; }

  .heibao-badge-top { left: 0; }
  .heibao-badge-bottom { right: 0; }

  .heibao-float-badge { font-size: 11.5px; padding: 7px 12px; }

  .heibao-footer-row { flex-direction: column; align-items: flex-start; }

  .heibao-page,
  .entry-content,
  .page-content { padding: 40px 16px 64px; }
}

/* ============ 无障碍 / 减少动效 ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}