/* ==========================================================================
   设计变量 —— 想换颜色只改这里
   ========================================================================== */
:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --ink: #12141a;
  --ink-2: #383e48;
  --muted: #6a7180;
  --line: #e3e0d8;
  --line-2: #d2cec3;
  --accent: #0d6b4f;
  --accent-dark: #084a37;
  --accent-soft: #e6f0eb;
  --dark: #101418;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --max: 1140px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-card: 0 1px 2px rgba(18, 20, 26, 0.04), 0 14px 36px -18px rgba(18, 20, 26, 0.18);
  --shadow-lift: 0 2px 4px rgba(18, 20, 26, 0.05), 0 26px 60px -24px rgba(18, 20, 26, 0.28);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
p,
figure,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

strong {
  font-weight: 650;
}

::selection {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

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

[id] {
  scroll-margin-top: 92px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  z-index: 100;
}
.skip-link:focus {
  left: 16px;
  top: 12px;
}

/* ==========================================================================
   布局
   ========================================================================== */
.container {
  width: min(100% - 44px, var(--max));
  margin-inline: auto;
}

.section {
  padding-block: clamp(68px, 8.5vw, 118px);
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  gap: 18px;
  max-width: 760px;
  margin-bottom: clamp(36px, 4.5vw, 60px);
}

.section-head p {
  color: var(--muted);
  font-size: 1.0625rem;
  max-width: 640px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}

h2 {
  font-size: clamp(1.7rem, 3.1vw, 2.45rem);
  line-height: 1.18;
  letter-spacing: -0.022em;
  font-weight: 700;
  text-wrap: balance;
}

h3 {
  font-size: 1.125rem;
  line-height: 1.45;
  letter-spacing: -0.01em;
  font-weight: 650;
}

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease),
    transform 0.18s var(--ease), color 0.18s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 24px -12px rgba(13, 107, 79, 0.8);
}
.btn--primary:hover {
  background: var(--accent-dark);
}

.btn--ghost {
  background: transparent;
  border-color: var(--line-2);
  color: var(--ink);
}
.btn--ghost:hover {
  border-color: var(--ink);
  background: rgba(255, 255, 255, 0.6);
}

.btn--light {
  background: #fff;
  color: var(--ink);
}
.btn--light:hover {
  background: var(--accent-soft);
}

.btn .arrow {
  transition: transform 0.18s var(--ease);
}
.btn:hover .arrow {
  transform: translateX(3px);
}

/* ==========================================================================
   顶部导航
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 245, 241, 0.82);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.site-header.is-stuck {
  border-bottom-color: var(--line);
  background: rgba(246, 245, 241, 0.94);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 70px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.0625rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 700;
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 0.9375rem;
  color: var(--ink-2);
}

.nav a {
  position: relative;
  padding: 4px 0;
  transition: color 0.16s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s var(--ease);
}
.nav a:hover {
  color: var(--ink);
}
.nav a:hover::after {
  transform: scaleX(1);
}

.header-cta {
  height: 42px;
  padding: 0 18px;
  font-size: 0.875rem;
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(56px, 8vw, 96px);
  padding-bottom: clamp(56px, 7vw, 88px);
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20% 0 auto 0;
  height: 120%;
  background: radial-gradient(46% 42% at 82% 6%, rgba(13, 107, 79, 0.13), transparent 72%),
    radial-gradient(40% 36% at 4% 0%, rgba(13, 107, 79, 0.06), transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.032em;
  font-weight: 700;
  text-wrap: balance;
  margin-top: 18px;
}

/* 防止网格子项被长内容撑破 */
.hero-copy,
.hero-visual {
  min-width: 0;
}

.hero-lead {
  margin-top: 22px;
  max-width: 560px;
  font-size: clamp(1rem, 1.35vw, 1.125rem);
  color: var(--ink-2);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  margin-top: 24px;
  font-size: 0.8125rem;
  color: var(--muted);
}

.hero-meta .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(13, 107, 79, 0.12);
}

/* 示例数据卡片 */
.serp-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px 24px 20px;
  box-shadow: var(--shadow-lift);
}

.serp-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
  pointer-events: none;
}

.serp-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.badge {
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 0.625rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-transform: none;
  font-family: var(--font-sans);
}

.serp-value {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 16px;
}

.serp-value b {
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.serp-delta {
  font-size: 0.8125rem;
  font-weight: 650;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}

.serp-chart {
  margin: 18px -4px 6px;
  width: calc(100% + 8px);
  height: auto;
}

.serp-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  color: var(--muted);
}

.serp-legend {
  display: flex;
  gap: 14px;
}
.serp-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.serp-legend i {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--accent);
  opacity: 0.85;
}
.serp-legend span + span i {
  background: var(--line-2);
}

/* ==========================================================================
   信任条
   ========================================================================== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stat {
  padding: 26px 24px;
  border-left: 1px solid var(--line);
}
.stat:first-child {
  border-left: 0;
  padding-left: 0;
}

.stat b {
  display: block;
  font-size: clamp(1.4rem, 2.4vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.stat span {
  display: block;
  margin-top: 6px;
  font-size: 0.8125rem;
  color: var(--muted);
}

/* ==========================================================================
   卡片 / 问题
   ========================================================================== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(22px, 2.4vw, 30px);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.card:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.card .no {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  font-weight: 600;
}

.card h3 {
  margin: 12px 0 10px;
}

.card p {
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.72;
}

/* ==========================================================================
   方法
   ========================================================================== */
.steps {
  border-top: 1px solid var(--line);
}

.step {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) 260px;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
  padding: clamp(24px, 3vw, 34px) 0;
  border-bottom: 1px solid var(--line);
}

.step-no {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
  padding-top: 4px;
}

.step-no small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-family: var(--font-sans);
  letter-spacing: 0;
  font-size: 0.75rem;
  font-weight: 400;
}

.step-body h3 {
  font-size: 1.1875rem;
  margin-bottom: 10px;
}

.step-body p {
  color: var(--muted);
  font-size: 0.9375rem;
  max-width: 620px;
}

.deliver {
  justify-self: end;
  align-self: center;
  font-size: 0.8125rem;
  color: var(--ink-2);
  background: var(--accent-soft);
  border: 1px solid rgba(13, 107, 79, 0.14);
  border-radius: 999px;
  padding: 8px 14px;
  line-height: 1.4;
  max-width: 100%;
}

/* ==========================================================================
   案例
   ========================================================================== */
.cases {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.case-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px 22px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.case-card:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.tag {
  align-self: flex-start;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 4px 10px;
  font-weight: 600;
  font-family: var(--font-mono);
}

.case-card h3 {
  margin: 16px 0 18px;
  font-size: 1.0625rem;
}

.case-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.case-metrics b {
  display: block;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.case-metrics span {
  display: block;
  margin-top: 2px;
  font-size: 0.75rem;
  color: var(--muted);
}

.case-card p {
  margin-top: 16px;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.7;
}

.case-time {
  margin-top: auto;
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.case-note {
  margin-top: 20px;
  font-size: 0.75rem;
  color: var(--muted);
  opacity: 0.85;
}

/* ==========================================================================
   报价
   ========================================================================== */
.plans {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.plan {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 30px 28px;
}

.plan--featured {
  background: var(--dark);
  border-color: var(--dark);
  color: #fff;
  box-shadow: var(--shadow-lift);
}

.plan-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 24px;
}

.plan-name {
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  color: var(--muted);
  font-weight: 600;
}

.plan--featured .plan-name {
  color: rgba(255, 255, 255, 0.6);
}

.plan-flag {
  font-size: 0.6875rem;
  border-radius: 999px;
  padding: 3px 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.plan-price {
  margin-top: 20px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.plan-price b {
  font-size: clamp(1.75rem, 3vw, 2.15rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.plan-price span {
  font-size: 0.8125rem;
  color: var(--muted);
}
.plan--featured .plan-price span {
  color: rgba(255, 255, 255, 0.65);
}

.plan-desc {
  margin-top: 14px;
  font-size: 0.9375rem;
  color: var(--muted);
  min-height: 3.2em;
}
.plan--featured .plan-desc {
  color: rgba(255, 255, 255, 0.72);
}

.plan-features {
  display: grid;
  gap: 11px;
  margin: 22px 0 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  flex: 1;
}
.plan--featured .plan-features {
  border-top-color: rgba(255, 255, 255, 0.14);
}

.plan-features li {
  position: relative;
  padding-left: 24px;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--ink-2);
}
.plan--featured .plan-features li {
  color: rgba(255, 255, 255, 0.86);
}

.plan-features li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.52em;
  width: 10px;
  height: 6px;
  border-left: 1.6px solid var(--accent);
  border-bottom: 1.6px solid var(--accent);
  transform: rotate(-45deg);
}
.plan--featured .plan-features li::before {
  border-color: #6fd3ab;
}

.plan-note {
  margin-top: 14px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
}
.plan--featured .plan-note {
  color: rgba(255, 255, 255, 0.58);
}

.plan .btn {
  width: 100%;
}

/* ==========================================================================
   关于
   ========================================================================== */
.about {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.about-photo {
  aspect-ratio: 1;
  border-radius: 20px;
  background: radial-gradient(
    120% 120% at 20% 0%,
    #ffffff 0%,
    var(--accent-soft) 55%,
    #d5e8df 100%
  );
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

.about-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: 0.5;
  mask-image: radial-gradient(circle at 50% 60%, #000, transparent 72%);
}

.about-photo span {
  position: relative;
  z-index: 1;
  font-size: 5.5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--accent);
  opacity: 0.85;
}

.about-text h2 {
  font-size: clamp(1.5rem, 2.4vw, 1.95rem);
  margin-bottom: 18px;
}

.about-text p {
  color: var(--ink-2);
  font-size: 0.9875rem;
  margin-bottom: 14px;
  max-width: 60ch;
}

.about-caption {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-size: 0.8125rem;
  color: var(--muted);
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq {
  max-width: 820px;
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 1.0125rem;
  letter-spacing: -0.01em;
  transition: color 0.16s var(--ease);
}

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

.faq summary:hover {
  color: var(--accent);
}

.faq summary::after {
  content: "";
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  background-image: linear-gradient(var(--muted), var(--muted)),
    linear-gradient(var(--muted), var(--muted));
  background-size: 12px 1.5px, 1.5px 12px;
  background-position: center;
  background-repeat: no-repeat;
  transition: transform 0.22s var(--ease);
}

.faq details[open] summary::after {
  transform: rotate(45deg);
}

.faq details p {
  padding: 0 0 24px;
  color: var(--muted);
  font-size: 0.9375rem;
  max-width: 680px;
}

/* ==========================================================================
   联系 / 表单
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}

.form-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: clamp(24px, 3vw, 34px);
  box-shadow: var(--shadow-card);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.field {
  display: grid;
  gap: 7px;
  margin-bottom: 14px;
}

.field label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ink-2);
  display: flex;
  gap: 5px;
  align-items: baseline;
  flex-wrap: wrap;
}

.field label em {
  font-style: normal;
  color: var(--accent);
  font-size: 0.75rem;
}

.field .hint {
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 400;
}

input[type="text"],
input[type="email"],
input[type="url"],
select,
textarea {
  width: 100%;
  font: inherit;
  font-size: 0.9375rem;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  transition: border-color 0.16s var(--ease), box-shadow 0.16s var(--ease),
    background 0.16s var(--ease);
}

input[type="text"],
input[type="email"],
input[type="url"],
select {
  height: 46px;
  padding: 0 14px;
}

textarea {
  min-height: 108px;
  resize: vertical;
  line-height: 1.6;
}

input::placeholder,
textarea::placeholder {
  color: #a2a7b1;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(13, 107, 79, 0.12);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%236a7180' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.hp {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.form-legal {
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.55;
}

.contact-aside h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin: 14px 0 16px;
}

.contact-aside > p {
  color: var(--muted);
  font-size: 0.9375rem;
  max-width: 380px;
}

.contact-list {
  margin-top: 30px;
  display: grid;
  border-top: 1px solid var(--line);
}

.contact-list a,
.contact-list div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 0.9375rem;
  transition: color 0.16s var(--ease);
}

.contact-list a:hover {
  color: var(--accent);
}

.contact-list .k {
  color: var(--muted);
  font-size: 0.8125rem;
}

.contact-list .v {
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: -0.01em;
}

.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--accent);
  margin-top: 26px;
}

.status-dot i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(13, 107, 79, 0.12);
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 48px;
  font-size: 0.8125rem;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a:hover {
  color: var(--ink);
}

.footer-note {
  margin-top: 18px;
  max-width: 620px;
  line-height: 1.6;
  opacity: 0.85;
}

.footer-note a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ==========================================================================
   感谢页 / 404
   ========================================================================== */
.thanks {
  min-height: 78vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding-block: 80px;
}

.thanks-inner {
  max-width: 560px;
}

.thanks .check {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin: 0 auto 26px;
  font-size: 1.5rem;
}

.thanks h1 {
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.thanks p {
  margin-top: 16px;
  color: var(--muted);
}

.thanks .btn {
  margin-top: 30px;
}

/* ==========================================================================
   入场动画（没有 JS 时内容照常显示）
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  will-change: opacity, transform;
}

.reveal.in {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1020px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 44px;
  }
  .serp-card {
    max-width: 520px;
  }
  .step {
    grid-template-columns: 72px minmax(0, 1fr);
  }
  .deliver {
    grid-column: 2;
    justify-self: start;
    margin-top: 14px;
  }
  .cases,
  .plans {
    grid-template-columns: 1fr 1fr;
  }
  .plan:last-child {
    grid-column: span 2;
  }
}

@media (max-width: 860px) {
  .nav {
    display: none;
  }
  .stats {
    grid-template-columns: 1fr 1fr;
  }
  .stat {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding: 20px 0;
  }
  .stat:nth-child(-n + 2) {
    border-top: 0;
  }
  .stat:nth-child(even) {
    padding-left: 22px;
    border-left: 1px solid var(--line);
  }
  .grid-2,
  .contact-grid,
  .about {
    grid-template-columns: 1fr;
  }
  .about-photo {
    max-width: 200px;
  }
  .cases,
  .plans {
    grid-template-columns: 1fr;
  }
  .plan:last-child {
    grid-column: auto;
  }
}

@media (max-width: 600px) {
  .container {
    width: min(100% - 36px, var(--max));
  }
  .header-cta {
    height: 38px;
    padding: 0 14px;
    font-size: 0.8125rem;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .field-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .step {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .step-no {
    display: flex;
    align-items: baseline;
    gap: 10px;
  }
  .step-no small {
    margin-top: 0;
  }
  .deliver {
    grid-column: 1;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ==========================================================================
   长文页（/articles/*）
   ========================================================================== */
.reading-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 60;
  background: transparent;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  height: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.1s linear;
}

.article-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-back {
  font-size: 0.875rem;
  color: var(--ink-2);
  transition: color 0.16s var(--ease);
}
.nav-back:hover {
  color: var(--accent);
}

.article {
  padding-block: clamp(36px, 5vw, 64px) clamp(60px, 8vw, 96px);
}

.article-container {
  width: min(100% - 44px, 720px);
  margin-inline: auto;
}

.article-head h1 {
  font-size: clamp(1.85rem, 3.8vw, 2.75rem);
  line-height: 1.24;
  letter-spacing: -0.028em;
  font-weight: 700;
  margin-top: 16px;
  text-wrap: balance;
}

.article-deck {
  margin-top: 20px;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--ink-2);
  max-width: 640px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 28px;
  font-size: 0.8125rem;
  color: var(--muted);
}

.article-meta span:not(:last-child)::after {
  content: "·";
  margin-left: 10px;
  opacity: 0.55;
}

.article-meta .author {
  color: var(--ink);
  font-weight: 600;
}

/* 目录 */
.toc {
  margin: 44px 0 12px;
  padding: 24px 26px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.toc-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}

.toc ol {
  list-style: none;
  counter-reset: toc;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 30px;
}

.toc li {
  counter-increment: toc;
}

.toc li a {
  display: flex;
  gap: 10px;
  padding: 7px 0;
  font-size: 0.9375rem;
  color: var(--ink-2);
  line-height: 1.5;
  transition: color 0.16s var(--ease);
}

.toc li a::before {
  content: counter(toc, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  opacity: 0.75;
  padding-top: 3px;
}

.toc li a:hover {
  color: var(--accent);
}

/* 正文 */
.prose {
  font-size: 1.0625rem;
  line-height: 1.95;
  color: #24282f;
}

.prose > p {
  margin-bottom: 1.35em;
}

.prose h2 {
  position: relative;
  margin: 3.1em 0 0.9em;
  font-size: clamp(1.4rem, 2.4vw, 1.7rem);
  line-height: 1.35;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--ink);
}

.prose h2 .num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--accent);
}

.prose h3 {
  margin: 2.2em 0 0.7em;
  font-size: 1.125rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
  font-weight: 650;
  color: var(--ink);
}

.prose strong {
  font-weight: 650;
  color: var(--ink);
}

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  background: #eceae4;
  border-radius: 5px;
  padding: 2px 6px;
  word-break: break-word;
}

/* 引用 / 金句 */
.prose blockquote.pull {
  margin: 2.1em 0;
  padding: 4px 0 4px 24px;
  border-left: 3px solid var(--accent);
  font-size: 1.15em;
  line-height: 1.75;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.prose .pull.small {
  border-left: 0;
  padding: 20px 24px;
  background: var(--accent-soft);
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.85;
  color: var(--ink-2);
}

/* 公式块 */
.prose .formula {
  margin: 2em 0;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  text-align: center;
  font-weight: 600;
  font-size: 1.02em;
  line-height: 2.1;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.prose .formula .arrow {
  color: var(--accent);
  margin: 0 4px;
  font-weight: 400;
}

.prose .formula .eq {
  color: var(--muted);
  margin: 0 4px;
  font-weight: 400;
}

/* 列表 */
.prose ul.plain,
.prose ol.numbered {
  margin: 1.4em 0 1.6em;
  padding: 0;
  list-style: none;
}

.prose ul.plain li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 0.75em;
}

.prose ul.plain li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.85em;
  width: 7px;
  height: 1.5px;
  background: var(--accent);
  opacity: 0.7;
}

.prose ol.numbered {
  counter-reset: item;
}

.prose ol.numbered li {
  position: relative;
  padding-left: 36px;
  margin-bottom: 0.9em;
  counter-increment: item;
}

.prose ol.numbered li::before {
  content: counter(item, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.28em;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--accent);
}

/* 表格 */
.table-wrap {
  margin: 2em 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  overflow-x: auto;
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  line-height: 1.7;
  min-width: 520px;
}

.table-wrap.compact table {
  min-width: 460px;
}

.table-wrap th {
  text-align: left;
  padding: 12px 16px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--muted);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.table-wrap td {
  padding: 14px 16px;
  border-top: 1px solid var(--line);
  vertical-align: top;
  color: var(--ink-2);
}

.table-wrap tbody tr:first-child td {
  border-top: 0;
}

.table-wrap .sub {
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 400;
}

.table-wrap.compact td,
.table-wrap.compact th {
  padding: 10px 12px;
  text-align: center;
}

.table-wrap.compact td:first-child,
.table-wrap.compact th:first-child {
  text-align: left;
}

/* 提示块 */
.callout {
  margin: 2em 0;
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
}

.callout-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
}

.callout p:last-child {
  margin-bottom: 0;
  font-size: 0.98em;
  line-height: 1.85;
  color: var(--ink-2);
}

.note {
  font-size: 0.845rem;
  line-height: 1.85;
  color: var(--muted);
}

.prose hr.prose-end {
  border: 0;
  margin: 3em 0 1.6em;
  text-align: center;
  height: auto;
}

.prose hr.prose-end::after {
  content: "· · ·";
  font-size: 1.1rem;
  letter-spacing: 0.4em;
  color: var(--line-2);
}

.article-foot {
  margin-top: 44px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

@media (max-width: 600px) {
  .article-container {
    width: min(100% - 36px, 720px);
  }
  .prose {
    font-size: 1rem;
    line-height: 1.9;
  }
  .toc {
    padding: 20px 20px 16px;
  }
  .toc ol {
    grid-template-columns: 1fr;
  }
  .prose blockquote.pull {
    padding-left: 18px;
    font-size: 1.05em;
  }
  .article-meta {
    gap: 8px;
  }
}

/* ==========================================================================
   首页的延伸阅读入口
   ========================================================================== */
.section--tight {
  padding-block: clamp(42px, 5vw, 66px);
}

.teaser {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(22px, 3vw, 32px) clamp(22px, 3vw, 36px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.teaser:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.teaser .eyebrow {
  margin-bottom: 12px;
}

.teaser h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.teaser-body p:not(.eyebrow) {
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.7;
  max-width: 640px;
}

.teaser-arrow {
  flex: 0 0 auto;
  font-size: 1.35rem;
  color: var(--accent);
  transition: transform 0.2s var(--ease);
}

.teaser:hover .teaser-arrow {
  transform: translateX(4px);
}

@media (max-width: 600px) {
  .teaser {
    align-items: flex-start;
  }
  .teaser-arrow {
    display: none;
  }
}

/* 长文页的顶栏常驻描边（没有首屏大图，不需要透明过渡） */
.article-page .site-header {
  border-bottom-color: var(--line);
  background: rgba(246, 245, 241, 0.94);
}

/* 细节微调：目录下留白、结尾分隔符、窄屏隐藏返回链接 */
.toc {
  margin-bottom: 36px;
}

.prose hr.prose-end::after {
  color: var(--muted);
  opacity: 0.45;
}

@media (max-width: 420px) {
  .article-nav .nav-back {
    display: none;
  }
}

/* ==========================================================================
   长文页：宽屏下的右侧悬浮目录
   ========================================================================== */
@media (min-width: 1141px) {
  .article-container {
    width: min(100% - 44px, 986px);
  }

  .article-head,
  .article-foot {
    max-width: 720px;
  }

  .article-body {
    display: grid;
    grid-template-columns: minmax(0, 720px) 210px;
    gap: 56px;
    align-items: start;
  }

  .prose {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
  }

  .toc {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 96px;
    margin: 0;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    max-height: calc(100vh - 128px);
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
  }

  .toc-title {
    margin-bottom: 10px;
    padding-left: 12px;
  }

  .toc ol {
    display: block;
    border-left: 1px solid var(--line);
  }

  .toc li a {
    position: relative;
    padding: 5px 0 5px 12px;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--muted);
  }

  .toc li a::before {
    font-size: 0.6875rem;
    padding-top: 2px;
    opacity: 0.55;
  }

  .toc li a:hover {
    color: var(--ink);
  }

  .toc li a.is-active {
    color: var(--ink);
    font-weight: 600;
  }

  .toc li a.is-active::before {
    color: var(--accent);
    opacity: 1;
  }

  .toc li a.is-active::after {
    content: "";
    position: absolute;
    left: -1px;
    top: 2px;
    bottom: 2px;
    width: 2px;
    border-radius: 2px;
    background: var(--accent);
  }
}

/* 宽屏目录栏的宽度微调：保证最长一条目录不折行 */
@media (min-width: 1141px) {
  .article-container {
    width: min(100% - 44px, 1030px);
  }

  .article-body {
    grid-template-columns: minmax(0, 720px) 264px;
    gap: 46px;
  }

  .article-head {
    margin-bottom: 24px;
  }
}

/* ==========================================================================
   首页改版：自检 / 工具 / 教程 / 选人
   ========================================================================== */
.check-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.check-card {
  display: flex;
  flex-direction: column;
}

.check-card p {
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.72;
}

.check-card code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: #eceae4;
  border-radius: 4px;
  padding: 1px 5px;
}

.check-card .check-hint {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 0.7188rem;
  letter-spacing: 0.02em;
  line-height: 1.65;
  color: var(--accent);
}

.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 56px;
  border-top: 1px solid var(--line);
}

.tool {
  padding: 22px 0 20px;
  border-bottom: 1px solid var(--line);
}

.tool-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}

.tool h3 {
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.tool p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.tool .badge {
  flex: 0 0 auto;
}

.paths {
  border-top: 1px solid var(--line);
}

.path {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.path-no {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.path-body b {
  display: block;
  font-size: 1.0625rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  transition: color 0.16s var(--ease);
}

.path-body span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.875rem;
}

.path-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  white-space: nowrap;
}

.path:hover .path-body b {
  color: var(--accent);
}

.crit {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 56px;
  border-top: 1px solid var(--line);
}

.crit li {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.crit-no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  padding-top: 4px;
}

.crit b {
  display: block;
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.crit p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

.section-note {
  margin-top: 26px;
  font-size: 0.875rem;
  color: var(--muted);
  max-width: 720px;
}

.section-note a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.plan-process {
  margin-top: 54px;
}

.plan-process-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

@media (max-width: 1020px) {
  .tool-grid {
    grid-template-columns: 1fr;
    column-gap: 0;
  }
}

@media (max-width: 860px) {
  .check-grid,
  .crit {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .check-grid {
    gap: 18px;
  }
}

@media (max-width: 600px) {
  .path {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 14px;
  }
  .path-meta {
    grid-column: 2;
  }
}

/* 首屏 H1 分三行，避免中文在词中间断行 */
.hero h1 span {
  display: block;
}

/* 三行标题需要一点行距，否则中文字顶在一起 */
.hero h1 {
  line-height: 1.16;
}

/* 导航换成关键词词组后变长，窄屏收一点间距和字号 */
@media (max-width: 1000px) {
  .nav {
    gap: 18px;
    font-size: 0.9rem;
  }
}

/* 数字条撤掉后，首屏底部留白收紧一点，别空出一大块 */
.hero {
  padding-bottom: clamp(36px, 4.5vw, 60px);
}

/* 导航到 6 项后，940 以下放不下，直接收起，只留右侧 CTA */
@media (max-width: 940px) {
  .nav {
    display: none;
  }
}

/* ==========================================================================
   报价：一页价目表 + 联系条
   ========================================================================== */
.price-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: stretch;
}

.price-block {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px 24px;
}

.price-stack {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 22px;
}

.price-meta h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.price-amount {
  margin-top: 10px;
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.price-amount small {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--muted);
}

.price-unit {
  margin-top: 5px;
  font-size: 0.75rem;
  color: var(--muted);
}

.price-who {
  margin-top: 14px;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--accent);
}

.price-desc p {
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--ink-2);
}

.price-desc p + p {
  margin-top: 10px;
}

.price-contact-bar {
  margin-top: 22px;
  padding: 22px 24px;
  background: var(--ink);
  border-radius: 8px;
  text-align: center;
}

.price-contact-bar p {
  font-size: 0.875rem;
  line-height: 1.95;
  color: rgba(255, 255, 255, 0.82);
}

.price-contact-bar strong {
  color: #fff;
  font-weight: 600;
}

.price-contact-bar a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 1000px) {
  .price-board {
    grid-template-columns: 1fr;
  }
  .price-stack {
    grid-template-rows: none;
  }
}

@media (max-width: 640px) {
  .price-block {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 22px 20px;
  }
  .price-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 6px 14px;
  }
  .price-meta h3 {
    width: 100%;
  }
  .price-amount,
  .price-unit {
    margin-top: 0;
  }
  .price-who {
    margin-top: 0;
    width: 100%;
  }
}
/* 首栏卡片：内容撑满，底部留一个入口 */
.price-block {
  grid-template-rows: 1fr auto;
}

.price-cta {
  grid-column: 1 / -1;
  justify-self: start;
  margin-top: 22px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s var(--ease);
}

.price-cta:hover {
  border-bottom-color: currentColor;
}