/* ============================================================
   日佳设备云 · 营销站样式
   纯静态站：不依赖构建工具，直接改、直接部署到 nginx。
   设计取产品后台的配色（品牌绿 #0f9d58 + 深蓝 #0b1524），
   让"官网 -> 后台"视觉上是同一家的东西。
   ============================================================ */

:root {
  --brand: #0f9d58;
  --brand-600: #0b7a44;
  --brand-050: #edf9f2;
  --ink: #0b1524;
  --ink-2: #1e293b;
  --ink-3: #475569;
  --ink-4: #64748b;
  --line: #e5eaf0;
  --line-2: #eef2f6;
  --bg: #ffffff;
  --soft: #f6f9f8;
  --dark: #0b1524;
  --radius: 18px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05), 0 2px 10px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 18px 40px -24px rgba(11, 21, 36, 0.28), 0 6px 16px -10px rgba(11, 21, 36, 0.12);
  --shadow-lg: 0 40px 80px -32px rgba(11, 21, 36, 0.35), 0 12px 28px -16px rgba(11, 21, 36, 0.18);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC",
    "Hiragino Sans GB", "Helvetica Neue", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--brand-600);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1,
h2,
h3,
h4 {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0;
  text-wrap: balance;
}

p {
  margin: 0;
}

:focus-visible {
  outline: 3px solid rgba(15, 157, 88, 0.45);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.wrap-wide {
  max-width: 1280px;
}

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

.skip-link:focus {
  left: 0;
}

/* ---------------- 导航 ---------------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line-2);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 800;
  font-size: 1.06rem;
  letter-spacing: -0.01em;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(160deg, #16b567, var(--brand-600));
  color: #fff;
  font-size: 1.15rem;
  font-weight: 800;
  box-shadow: 0 6px 14px -6px rgba(15, 157, 88, 0.8);
}

.brand-sub {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--ink-4);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.2;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
}

.nav-links a {
  display: inline-block;
  white-space: nowrap;
  padding: 8px 14px;
  border-radius: 10px;
  color: var(--ink-3);
  font-size: 0.95rem;
  font-weight: 600;
}

.nav-links a:hover {
  background: var(--soft);
  color: var(--ink);
  text-decoration: none;
}

.nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  color: var(--ink);
  font-size: 1.1rem;
  cursor: pointer;
}

/* ---------------- 按钮 ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease, color 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 10px 22px -12px rgba(15, 157, 88, 0.9);
}

.btn-primary:hover {
  background: var(--brand-600);
}

.btn-ghost {
  background: #fff;
  border-color: var(--line);
  color: var(--ink-2);
}

.btn-ghost:hover {
  border-color: #cbd5e1;
  background: #fbfdff;
}

.btn-light {
  background: #fff;
  color: var(--brand-600);
}

.btn-lg {
  padding: 16px 28px;
  font-size: 1.02rem;
  border-radius: 13px;
}

.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.32);
  color: #fff;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* ---------------- 首屏 ---------------- */

.hero {
  position: relative;
  padding: 72px 0 56px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -220px -10% auto -10%;
  height: 620px;
  background: radial-gradient(60% 60% at 30% 20%, rgba(15, 157, 88, 0.1), transparent 70%),
    radial-gradient(50% 50% at 85% 10%, rgba(11, 21, 36, 0.06), transparent 70%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 52px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 14px 6px 10px;
  border-radius: 999px;
  background: var(--brand-050);
  border: 1px solid rgba(15, 157, 88, 0.16);
  color: var(--brand-600);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px rgba(15, 157, 88, 0.14);
}

.hero h1 {
  margin: 22px 0 0;
  font-size: clamp(2rem, 3.6vw, 2.9rem);
  line-height: 1.18;
  letter-spacing: -0.03em;
}

.hero h1 em {
  font-style: normal;
  color: var(--brand-600);
  position: relative;
  white-space: nowrap;
}

.hero .lead {
  margin-top: 22px;
  font-size: 1.12rem;
  line-height: 1.8;
  color: var(--ink-3);
  max-width: 33em;
}

.hero-cta {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.hero-cta .hint {
  font-size: 0.9rem;
  color: var(--ink-4);
}

.hero-facts {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 0.92rem;
  color: var(--ink-3);
}

.hero-facts li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-facts svg {
  flex: none;
  color: var(--brand);
}

/* 截图外框：模拟浏览器窗口，比裸图更像"真的在用" */
.frame {
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.frame-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 40px;
  padding: 0 14px;
  background: #f7f9fb;
  border-bottom: 1px solid var(--line);
}

.frame-bar i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #dfe6ee;
}

.frame-url {
  margin-left: 10px;
  flex: 1;
  font-size: 11.5px;
  color: #94a3b8;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 3px 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.frame img {
  width: 100%;
}

.caption {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--ink-4);
  text-align: center;
}

/* ---------------- 数字条 ---------------- */

.metrics {
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
  background: var(--soft);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding: 26px 0;
}

.metric {
  padding: 6px 26px;
  border-left: 1px solid var(--line);
}

.metric:first-child {
  border-left: 0;
  padding-left: 0;
}

.metric b {
  display: block;
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.metric span {
  font-size: 0.88rem;
  color: var(--ink-4);
}

/* ---------------- 通用区块 ---------------- */

.section {
  padding: 88px 0;
}

.section-soft {
  background: var(--soft);
}

.section-head {
  max-width: 760px;
  margin-bottom: 48px;
}

.kicker {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-600);
}

.section-head h2 {
  margin: 14px 0 0;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
}

.section-head p {
  margin-top: 16px;
  font-size: 1.04rem;
  color: var(--ink-3);
}

/* ---------------- 痛点对比 ---------------- */

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.compare-card {
  padding: 30px 30px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
}

.compare-card.after {
  border-color: rgba(15, 157, 88, 0.28);
  background: linear-gradient(180deg, #f4fcf7, #fff 60%);
  box-shadow: 0 20px 50px -34px rgba(15, 157, 88, 0.6);
}

.compare-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.12rem;
  margin-bottom: 6px;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
}

.tag-bad {
  background: #f1f5f9;
  color: #64748b;
}

.tag-good {
  background: var(--brand-050);
  color: var(--brand-600);
}

.compare-card ul {
  list-style: none;
  margin: 14px 0 18px;
  padding: 0;
}

.compare-card li {
  display: flex;
  gap: 12px;
  padding: 11px 0;
  border-top: 1px dashed var(--line);
  font-size: 0.98rem;
  color: var(--ink-3);
}

.compare-card li:first-child {
  border-top: 0;
}

.compare-card li i {
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  font-style: normal;
  font-weight: 800;
}

.i-bad {
  background: #f1f5f9;
  color: #94a3b8;
}

.i-good {
  background: var(--brand);
  color: #fff;
}

/* ---------------- 三张图 ---------------- */

.trio {
  display: grid;
  gap: 26px;
}

.trio-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 46px;
  align-items: center;
  padding: 20px 0;
}

.trio-row.flip .trio-copy {
  order: 2;
}

.trio-copy h3 {
  font-size: clamp(1.3rem, 2.1vw, 1.62rem);
}

.trio-copy h3 span {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-right: 10px;
  border-radius: 9px;
  background: var(--brand-050);
  color: var(--brand-600);
  font-size: 0.92rem;
  vertical-align: 2px;
}

.trio-copy p {
  margin-top: 14px;
  color: var(--ink-3);
  font-size: 1rem;
}

.trio-copy ul {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.trio-copy li {
  position: relative;
  padding-left: 24px;
  font-size: 0.95rem;
  color: var(--ink-3);
}

.trio-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 7px;
  border-left: 2.5px solid var(--brand);
  border-bottom: 2.5px solid var(--brand);
  transform: rotate(-45deg);
}

/* 手机截图：竖长图放进浅色展台 */
.phone-stage {
  display: flex;
  justify-content: center;
  padding: 34px;
  border-radius: var(--radius);
  background: radial-gradient(120% 100% at 50% 0%, #effaf4, #f6f8f9 70%);
  border: 1px solid var(--line);
}

.phone {
  width: min(320px, 100%);
  border-radius: 30px;
  padding: 9px;
  background: #0b1524;
  box-shadow: 0 30px 60px -30px rgba(11, 21, 36, 0.55);
}

.phone img {
  border-radius: 22px;
}

/* ---------------- 能力网格 ---------------- */

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

.card {
  padding: 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.card:hover {
  border-color: rgba(15, 157, 88, 0.28);
}

.card-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--brand-050);
  color: var(--brand-600);
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.06rem;
}

.card p {
  margin-top: 8px;
  font-size: 0.94rem;
  color: var(--ink-3);
}

/* ---------------- 品牌支持 ---------------- */

.brand-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.chip {
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 0.88rem;
  color: var(--ink-3);
  font-weight: 600;
}

.chip strong {
  color: var(--ink);
  font-weight: 700;
}

/* ---------------- 安全 ---------------- */

.security {
  border-radius: 26px;
  padding: 58px;
  color: #e2e8f0;
  background: radial-gradient(120% 150% at 100% 0%, #16304b 0%, var(--dark) 55%);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.security h2 {
  color: #fff;
  font-size: clamp(1.6rem, 2.7vw, 2.15rem);
}

.security p {
  margin-top: 16px;
  color: #b9c6d6;
  font-size: 1rem;
}

.security .kicker {
  color: #5ee59d;
}

.sec-list {
  display: grid;
  gap: 14px;
}

.sec-item {
  display: flex;
  gap: 14px;
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.sec-item svg {
  flex: none;
  margin-top: 3px;
  color: #5ee59d;
}

.sec-item b {
  display: block;
  color: #fff;
  font-size: 0.98rem;
}

.sec-item span {
  font-size: 0.88rem;
  color: #a8b7c8;
  line-height: 1.6;
}

.security .btn {
  margin-top: 26px;
}

/* ---------------- 接入步骤 ---------------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 30px 26px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
}

.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--brand);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.step h3 {
  font-size: 1.05rem;
}

.step p {
  margin-top: 8px;
  font-size: 0.94rem;
  color: var(--ink-3);
}

.step code {
  font-size: 0.86em;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 6px;
}

/* ---------------- 结尾 CTA ---------------- */

.cta {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  padding: 60px 56px;
  color: #fff;
  background: linear-gradient(120deg, #0d8f51 0%, #0b7a44 55%, #0a5f37 100%);
}

.cta::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.14), transparent 65%);
}

.cta-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.cta h2 {
  color: #fff;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
}

.cta p {
  margin-top: 14px;
  color: #d3f0e1;
  font-size: 1.02rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.cta-phone {
  text-align: right;
}

.cta-phone span {
  display: block;
  font-size: 0.86rem;
  color: #bfe8d2;
  letter-spacing: 0.04em;
}

.cta-phone a {
  display: inline-block;
  margin-top: 6px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.cta-phone small {
  display: block;
  margin-top: 8px;
  color: #bfe8d2;
  font-size: 0.86rem;
}

/* ---------------- 页脚 ---------------- */

.footer {
  margin-top: 48px;
  background: var(--dark);
  color: #94a3b8;
  padding: 56px 0 28px;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
}

.footer .brand {
  color: #fff;
}

.footer .brand-sub {
  color: #64748b;
}

.footer h4 {
  color: #fff;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.footer a {
  color: #94a3b8;
}

.footer a:hover {
  color: #fff;
}

.footer-bottom {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: space-between;
  font-size: 0.84rem;
  color: #7c8ca0;
}

/* ---------------- 功能页专用 ---------------- */

.page-hero {
  padding: 64px 0 44px;
  background: linear-gradient(180deg, var(--soft), #fff);
  border-bottom: 1px solid var(--line-2);
}

.page-hero h1 {
  margin-top: 18px;
  font-size: clamp(2rem, 4vw, 3rem);
}

.page-hero p {
  margin-top: 18px;
  max-width: 46em;
  font-size: 1.06rem;
  color: var(--ink-3);
}

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
}

.toc a {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-3);
  font-size: 0.88rem;
  font-weight: 600;
}

.toc a:hover {
  border-color: rgba(15, 157, 88, 0.4);
  color: var(--brand-600);
  text-decoration: none;
}

.feature {
  padding: 76px 0;
  border-bottom: 1px solid var(--line-2);
}

.feature:last-of-type {
  border-bottom: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 52px;
  align-items: center;
}

.feature-grid.flip > .feature-copy {
  order: 2;
}

.feature-copy h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
}

.feature-copy .lead {
  margin-top: 16px;
  color: var(--ink-3);
  font-size: 1.02rem;
}

.feature-copy ul {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.feature-copy li {
  position: relative;
  padding-left: 24px;
  font-size: 0.95rem;
  color: var(--ink-3);
}

.feature-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 7px;
  border-left: 2.5px solid var(--brand);
  border-bottom: 2.5px solid var(--brand);
  transform: rotate(-45deg);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
}

.table th,
.table td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.table th {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-4);
  background: #f8fafc;
  white-space: nowrap;
}

.table tr:last-child td {
  border-bottom: 0;
}

.table td strong {
  color: var(--ink);
}

.table-wrap {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}

.note {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  margin-top: 22px;
  border-radius: 14px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
  font-size: 0.92rem;
}

.note svg {
  flex: none;
  margin-top: 3px;
}

.note strong {
  color: #78350f;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.pill {
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--brand-050);
  color: var(--brand-600);
  font-size: 0.84rem;
  font-weight: 700;
}

.pill.gray {
  background: #f1f5f9;
  color: #64748b;
}

/* ---------------- 响应式 ---------------- */

@media (max-width: 1024px) {
  .hero-grid,
  .security,
  .cta-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-grid {
    gap: 44px;
  }

  .cta-phone {
    text-align: left;
  }

  .trio-row,
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .trio-row.flip .trio-copy,
  .feature-grid.flip > .feature-copy {
    order: 0;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 20px;
  }

  .metric:nth-child(3) {
    border-left: 0;
    padding-left: 0;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .security {
    padding: 40px 30px;
  }

  .cta {
    padding: 42px 30px;
  }
}

@media (max-width: 760px) {
  body {
    font-size: 16px;
  }

  .nav-inner {
    gap: 12px;
  }

  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 72px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px 16px 16px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 10px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-actions .btn-ghost {
    display: none;
  }

  .hero {
    padding: 40px 0 32px;
  }

  .section {
    padding: 60px 0;
  }

  .compare,
  .grid-3,
  .steps {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: 1fr 1fr;
    padding: 20px 0;
  }

  .metric {
    padding: 6px 16px;
  }

  .metric b {
    font-size: 1.5rem;
  }

  .feature {
    padding: 52px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .cta-phone a {
    font-size: 1.7rem;
  }

  .phone-stage {
    padding: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn {
    transition: none;
  }

  .btn:hover {
    transform: none;
  }
}

/* 打印/导出：不要把截图截断 */
@media print {
  .nav,
  .cta,
  .footer {
    display: none;
  }

  .section {
    padding: 24px 0;
  }
}

/* ============================================================
   内页组件：报价、部署、安全、关于、联系
   ============================================================ */

/* 页面小标题下的导语 */
.page-hero .lead {
  margin-top: 18px;
  max-width: 46em;
  font-size: 1.06rem;
  color: var(--ink-3);
}

/* 关键提醒（例如传输层现状） */
.callout {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  border-radius: 14px;
  background: #f8fafc;
  border: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 0.93rem;
  line-height: 1.7;
}

.callout.warn {
  background: #fffbeb;
  border-color: #fde68a;
  color: #92400e;
}

.callout svg {
  flex: none;
  margin-top: 3px;
}

.callout strong {
  color: inherit;
}

.callout a {
  color: inherit;
  text-decoration: underline;
}

/* 报价卡 */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.price-card {
  display: flex;
  flex-direction: column;
  padding: 30px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.price-card.featured {
  border-color: rgba(15, 157, 88, 0.32);
  box-shadow: 0 24px 60px -40px rgba(15, 157, 88, 0.6);
}

.price-card h3 {
  font-size: 1.1rem;
}

.price-card .price {
  margin: 14px 0 4px;
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.price-card .price small {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink-4);
  letter-spacing: 0;
}

.price-card p {
  font-size: 0.94rem;
  color: var(--ink-3);
}

.price-card ul {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.price-card li {
  position: relative;
  padding-left: 24px;
  font-size: 0.93rem;
  color: var(--ink-3);
}

.price-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 12px;
  height: 7px;
  border-left: 2.5px solid var(--brand);
  border-bottom: 2.5px solid var(--brand);
  transform: rotate(-45deg);
}

/* 勾选清单 */
/* .checklist 自带 SVG 勾，取消从 .feature-copy 继承来的伪元素勾 */
.checklist li::before,
.feature-copy .checklist li::before {
  content: none;
}

.checklist {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.checklist li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.96rem;
  color: var(--ink-3);
}

.checklist svg {
  flex: none;
  margin-top: 4px;
  color: var(--brand);
}

.checklist b {
  color: var(--ink);
}

/* 代码块（agent.json 示例） */
.codeblock {
  margin: 20px 0 0;
  padding: 18px 20px;
  border-radius: 14px;
  background: #0b1524;
  color: #d7e3f4;
  font-family: "Cascadia Code", Consolas, "Courier New", monospace;
  font-size: 0.84rem;
  line-height: 1.8;
  overflow-x: auto;
}

.codeblock .k {
  color: #7dd3a8;
}

/* FAQ */
.faq {
  display: grid;
  gap: 12px;
  margin-top: 8px;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  padding: 0 20px;
}

.faq details[open] {
  border-color: rgba(15, 157, 88, 0.28);
}

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 17px 0;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

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

.faq summary::after {
  content: "+";
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--brand-050);
  color: var(--brand-600);
  font-weight: 800;
  font-size: 0.9rem;
}

.faq details[open] summary::after {
  content: "−";
}

.faq .answer {
  padding: 0 0 18px;
  font-size: 0.94rem;
  color: var(--ink-3);
  max-width: 52em;
}

/* 联系页表单 */
.contact-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 46px;
  align-items: start;
}

.lead-form {
  padding: 30px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.lead-form h2 {
  font-size: 1.25rem;
}

.lead-form > p {
  margin-top: 8px;
  font-size: 0.9rem;
  color: var(--ink-4);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--ink-3);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid #cbd5e1;
  border-radius: 11px;
  background: #fff;
  font: inherit;
  font-size: 0.94rem;
  color: var(--ink);
}

.field textarea {
  min-height: 88px;
  resize: vertical;
}

.lead-form .btn {
  width: 100%;
  margin-top: 18px;
}

.form-hint {
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--ink-4);
  line-height: 1.6;
}

.form-result {
  margin-top: 18px;
  padding: 18px 20px;
  border-radius: 14px;
  background: var(--brand-050);
  border: 1px solid rgba(15, 157, 88, 0.28);
  display: none;
}

.form-result.show {
  display: block;
}

.form-result h3 {
  font-size: 1rem;
  color: var(--brand-600);
}

.form-result p {
  margin-top: 8px;
  font-size: 0.9rem;
  color: var(--ink-3);
}

.form-result pre {
  margin: 12px 0 0;
  padding: 12px 14px;
  border-radius: 10px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 0.82rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--ink-2);
}

.form-result .btn {
  width: auto;
  margin-top: 12px;
}

/* 联系信息卡 */
.contact-card {
  padding: 30px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--soft), #fff 60%);
}

.contact-card dl {
  margin: 18px 0 0;
  display: grid;
  gap: 16px;
}

.contact-card dt {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-4);
}

.contact-card dd {
  margin: 4px 0 0;
  font-size: 1rem;
  color: var(--ink);
}

.contact-card dd a {
  color: var(--ink);
  font-weight: 700;
}

.contact-card .big {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

/* 两列信息（关于页） */
.info-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.value-card {
  padding: 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
}

.value-card h3 {
  font-size: 1.02rem;
}

.value-card p {
  margin-top: 8px;
  font-size: 0.94rem;
  color: var(--ink-3);
}

/* 四步流程（2×2）；手机上一列 */
.steps.two {
  grid-template-columns: repeat(2, 1fr);
}

/* 安全页表格列多，允许横向滚动 */
.table-wrap.scroll {
  overflow-x: auto;
}

.table-wrap.scroll .table {
  min-width: 640px;
}

@media (max-width: 1024px) {
  .price-grid,
  .contact-grid,
  .info-cols {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 980px) {
  /* 五个导航项在 900 上下会挤到一起，提前收进汉堡菜单 */
  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 72px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px 16px 16px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 10px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-actions .btn-ghost {
    display: none;
  }
}

@media (max-width: 760px) {
  /* 手机上没有横向空间，宽表改成自动换行而不是横向滚动 */
  .table-wrap.scroll {
    overflow-x: visible;
  }

  .table-wrap.scroll .table {
    min-width: 0;
    font-size: 0.82rem;
  }

  .table-wrap.scroll .table th,
  .table-wrap.scroll .table td {
    padding: 10px 12px;
  }

  .table th {
    white-space: normal;
  }

  .steps.two {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .lead-form,
  .contact-card {
    padding: 22px;
  }
}

/* ---------------- 示意图（PaperCut 页） ---------------- */
.diagram-wrap {
  margin-top: 30px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.diagram {
  display: block;
  width: 100%;
  height: auto;
}

.diagram-caption {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--ink-4);
}

.diagram-hint {
  display: none;
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--ink-4);
  text-align: center;
}

@media (max-width: 760px) {
  .diagram-wrap {
    padding: 14px;
    overflow-x: auto;
  }

  .diagram-hint {
    display: block;
  }

  .diagram {
    min-width: 700px;
  }
}