/* -------- 1. 令牌 -------- */
:root {
  --bg: oklch(0.985 0.002 250);
  --surface: oklch(0.978 0.003 252);
  --surface-2: oklch(0.938 0.005 252);
  --fg: oklch(0.215 0.022 258);
  /* 0.545 -> 0.500：最深一档板块上辅助文字仍需 >=4.5:1（0.545 只能到 4.35:1） */
  --muted: oklch(0.5 0.016 258);

  /* 板块底色三档，仅用于 .sec-* 带区，不用于组件自身填充。
     相邻 ΔL 约 0.017–0.020，足以分清区块又不抢内容；最深一档上
     --fg 15.4:1、--muted 5.26:1，描边仍清晰可辨。 */
  --sec-0: oklch(0.992 0.002 250);
  --sec-1: oklch(0.975 0.005 253);
  --sec-2: oklch(0.955 0.008 256);
  --border: oklch(0.898 0.006 258);
  --border-strong: oklch(0.82 0.008 258);

  /* 品牌橙取自品牌 logo（default/img/brand/sation11.png）实测值 */
  --accent: #f08418;
  --accent-2: #ffa23c;
  --accent-3: #e2541a;
  --accent-ink: #a8510a;
  --accent-soft: #fff3e4;
  --brand-grey: #58585b;

  /* 纯色填充（不使用多色渐变） */
  --grad-warm: #f08418;
  --grad-deep: #d9700f;
  --grad-ink: #1b2431;
  --grad-glass: rgba(255, 255, 255, 0.1);
  --grad-line: #f08418;
  --grad-card: #ffffff;
  --on-accent: #16202f;

  --ink: oklch(0.2 0.025 258);
  --ink-2: oklch(0.255 0.028 258);
  --ink-3: oklch(0.31 0.03 258);
  --on-ink: oklch(0.96 0.004 250);
  --on-ink-muted: oklch(0.755 0.012 255);
  --hair: rgba(255, 255, 255, 0.14);

  --success: oklch(0.62 0.14 152);
  --danger: oklch(0.58 0.18 25);

  --font-display: 'Sora', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-body: 'Manrope', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, 'Courier New', monospace;

  --container: 1280px;
  --gutter: clamp(20px, 4vw, 48px);
  --sec-y: clamp(74px, 7.6vw, 128px);
  --r: 6px;
  --r-lg: 12px;
  --r-sm: 4px;
  --r-pill: 999px;

  --sh-1: 0 1px 2px oklch(0.2 0.025 258 / 0.06);
  --sh-2: 0 10px 30px oklch(0.2 0.025 258 / 0.09);
  /* 大卡（整块图文卡 / 产品卡 / 证书卡）悬停用。此前这几个各自写死了一串
     0 18~20px 44~50px / .13~.16，同一层级的卡阴影深浅不一；收敛为同一档。 */
  --sh-3: 0 18px 44px oklch(0.2 0.025 258 / 0.13);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* -------- 2. 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(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  font-weight: 450;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
[hidden] {
  display: none !important;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}
input,
textarea,
select {
  font: inherit;
  color: inherit;
}
h1,
h2,
h3,
h4,
h5 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.014em;
}
h1 {
  font-size: clamp(2rem, 4.2vw, 3.35rem);
  line-height: 1.16;
}
h2 {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}
h3 {
  font-size: clamp(1.08rem, 1.5vw, 1.3rem);
  letter-spacing: -0.01em;
}
h4 {
  font-size: 1rem;
}
p {
  margin: 0 0 1em;
}
p:last-child {
  margin-bottom: 0;
}
figure {
  margin: 0;
}
blockquote {
  margin: 0;
}
::selection {
  background: var(--accent);
  color: var(--ink);
}
:focus-visible {
  outline: 2px solid var(--accent-ink);
  outline-offset: 3px;
  border-radius: 2px;
}
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.tabular {
  font-variant-numeric: tabular-nums;
}
.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--ink);
  color: var(--on-ink);
  padding: 12px 18px;
}
.skip:focus {
  left: 12px;
  top: 12px;
}

/* -------- 3. 版式 -------- */
.wrap {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.sec {
  padding-block: var(--sec-y);
  background: var(--sec-0);
}
.sec-tight {
  padding-block: clamp(48px, 5vw, 76px);
}
.sec-surface {
  background: var(--sec-1);
}
.sec-ink {
  background: var(--ink);
  color: var(--on-ink);
}
/* 深色带需要相邻两块时用（如 表单带 → 页脚），比 --ink 浅 0.055 */
.sec-ink-2 {
  background: var(--ink-2);
}
.sec-ink h1,
.sec-ink h2,
.sec-ink h3 {
  color: var(--on-ink);
}
.sec-ink .lead,
.sec-ink .muted {
  color: var(--on-ink-muted);
}

/* 居中章节标题：中文主标 + 英文副题 —— 品牌既有语汇，去编号、去图标 */
.sh {
  text-align: center;
  max-width: 820px;
  margin: 0 auto clamp(30px, 3.6vw, 52px);
}
.sh-en {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.sh-en::after {
  content: '';
  display: block;
  width: 30px;
  height: 2px;
  background: var(--accent);
  margin: 14px auto 0;
}
.sh h2 + .sh-sub {
  margin-top: 16px;
}
.sh-sub {
  font-size: 1rem;
  line-height: 1.72;
  color: var(--muted);
  max-width: 64ch;
  margin-inline: auto;
}
.sec-ink .sh-en {
  color: var(--on-ink-muted);
}
.sec-ink .sh-sub {
  color: var(--on-ink-muted);
}

.lead {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--muted);
}
.muted {
  color: var(--muted);
}
.small {
  font-size: 0.875rem;
  line-height: 1.65;
}
.cap {
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--muted);
}
/* 案例名称下方的免责说明。案例列表含第三方商标与公立机构名称，
   广告法第九条禁止变相使用国家机关的名义或形象，故该说明须与案例列表同屏。
   max-width 取 64ch 以控制行宽，并补两倍 gutter —— 该 <p> 与上方的按钮兄弟一样
   直接挂在 .sec 下而不在 .wrap 内，桌面端看不出来，窄屏会顶到屏幕两侧。 */
.case-note {
  max-width: calc(64ch + var(--gutter) * 2);
  margin: 22px auto 0;
  padding-inline: var(--gutter);
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--muted);
}
.rule {
  height: 1px;
  background: var(--border);
  border: 0;
  margin: 0;
}

/* -------- 4. 按钮 -------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 0 26px;
  border-radius: var(--r);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition:
    transform 0.16s var(--ease),
    background-color 0.18s var(--ease),
    border-color 0.18s var(--ease),
    color 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
}
.btn:active {
  transform: translateY(2px);
}
.btn svg {
  width: 16px;
  height: 16px;
  flex: none;
}
.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 6px 18px rgba(240, 132, 24, 0.3);
}
.btn-primary:hover {
  background: var(--grad-deep);
  color: var(--on-accent);
  box-shadow: 0 10px 26px rgba(226, 84, 26, 0.38);
}
.btn-ink {
  background: var(--ink);
  color: var(--on-ink);
}
.btn-ink:hover {
  background: var(--ink-3);
}
.btn-ghost {
  border-color: var(--border-strong);
  color: var(--fg);
}
.btn-ghost:hover {
  border-color: var(--fg);
  background: var(--surface);
}
.btn-on-ink {
  border-color: rgba(255, 255, 255, 0.34);
  color: var(--on-ink);
}
.btn-on-ink:hover {
  border-color: var(--on-ink);
  background: rgba(255, 255, 255, 0.08);
}
.btn-sm {
  min-height: 42px;
  padding: 0 18px;
  font-size: 0.86rem;
}
.btn-block {
  width: 100%;
}
.link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--fg);
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 3px;
  transition:
    border-color 0.18s var(--ease),
    gap 0.18s var(--ease);
}
.link:hover {
  border-color: var(--fg);
  gap: 12px;
}
.link svg {
  width: 14px;
  height: 14px;
}
.sec-ink .link {
  color: var(--on-ink);
  border-color: var(--hair);
}
.sec-ink .link:hover {
  border-color: var(--on-ink);
}

/* -------- 5. 顶栏 -------- */
.hdr {
  position: sticky;
  top: 0;
  z-index: 90;
  background: color-mix(in oklab, var(--bg) 90%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow:
    0 1px 0 var(--border),
    0 8px 30px oklch(0.2 0.025 258 / 0.04);
}
.hdr-in {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.6vw, 40px);
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex: none;
}
.brand-logo {
  height: 34px;
  width: auto;
  flex: none;
}

.brand-sites {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: none;
  margin: 0 0 0 calc(12px - clamp(14px, 2.6vw, 40px));
  padding-left: 12px;
  border-left: 1px solid var(--border-strong);
  font-size: 0.66rem;
  line-height: 1.25;
  letter-spacing: 0.04em;
  color: var(--muted);
  white-space: nowrap;
}

.ft .brand-plate {
  display: inline-flex;
}
.ft .brand-plate .brand-logo {
  height: 28px;
}
.brand-txt {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.brand-en {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  letter-spacing: 0.09em;
}
.brand-cn {
  font-size: 0.64rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  margin-top: 3px;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1px, 0.9vw, 8px);
  margin-left: auto;
}
.nav a {
  position: relative;
  padding: 10px 12px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--fg);
  border-radius: var(--r);
  white-space: nowrap;
  transition: color 0.16s var(--ease);
}
.nav a::after {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 1.5px;
  background: var(--fg);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s var(--ease);
}
.nav a:hover::after,
.nav a[aria-current='page']::after {
  transform: scaleX(1);
}
.nav a[aria-current='page'] {
  font-weight: 600;
}
.hdr-act {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}


@media (min-width: 1081px) and (max-width: 1180px) {
  .hdr-in {
    gap: 12px;
  }
  .brand-sites {
    font-size: 0.62rem;
  }
  .nav {
    gap: 4px;
  }
  .nav a {
    padding: 10px 8px;
  }
  .nav a::after {
    left: 8px;
    right: 8px;
  }
  .hdr-act {
    gap: 8px;
  }
  .hdr-act .lang :is(button, a) {
    padding: 0 8px;
  }
}


.lang {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  overflow: hidden;
}
.lang :is(button, a) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 11px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--muted);
  transition:
    background-color 0.16s var(--ease),
    color 0.16s var(--ease);
}
.lang :is(button[aria-pressed='true'], a[aria-current='true']) {
  background: var(--ink);
  color: var(--on-ink);
}
.lang :is(button:not([aria-pressed='true']), a:not([aria-current='true'])):hover {
  background: var(--surface);
  color: var(--fg);
}

.burger {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
}
.burger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--fg);
  position: relative;
  transition:
    transform 0.2s var(--ease),
    background-color 0.2s var(--ease);
}
.burger span::before,
.burger span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: var(--fg);
  transition:
    transform 0.2s var(--ease),
    top 0.2s var(--ease);
}
.burger span::before {
  top: -6px;
}
.burger span::after {
  top: 6px;
}
.burger[aria-expanded='true'] span {
  background: transparent;
}
.burger[aria-expanded='true'] span::before {
  top: 0;
  transform: rotate(45deg);
}
.burger[aria-expanded='true'] span::after {
  top: 0;
  transform: rotate(-45deg);
}

.mob {
  position: fixed;
  inset:60px 0 0;
  z-index: 88;
  background: var(--bg);
  padding: 24px var(--gutter) 44px;
  overflow-y: auto;
  transform: translateY(-8px);
  opacity: 0;

  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.22s var(--ease),
    transform 0.22s var(--ease),
    visibility 0s linear 0.22s;
}
.mob[data-open='true'] {
  opacity: 1;
  transform: none;
  visibility: visible;
  pointer-events: auto;
  transition:
    opacity 0.22s var(--ease),
    transform 0.22s var(--ease),
    visibility 0s linear 0s;
}

.mob nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 2px;
  font-size: 1.08rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}
.mob nav a span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.mob .mob-cta {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

@media (max-width: 1080px) {

  .nav {
    display: none;
  }
  .burger {
    display: inline-flex;
  }
  .hdr-act {
    margin-left: auto;
  }

  .hdr-act .lang :is(button, a) {
    min-height: 44px;
    padding: 0 12px;
  }
}
@media (max-width: 520px) {
  .hdr-act .btn {
    display: none;
  }
}


@media (max-width: 640px) {
  .hdr-act .lang {
    display: none;
  }
}

@media (max-width: 360px) {

  :root {
    --gutter: 14px;
  }
  .hdr-in {
    gap: 10px;
  }
  .hdr-in .brand-logo {
    height: 26px;
  }
  .brand-sites {
    font-size: 0.56rem;
    padding-left: 8px;
    margin-left: calc(8px - 10px);
  }
}

/* -------- 6. 首页 banner：文字叠在图片上 -------- */
.banner {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--on-ink);
  display: flex;
  flex-direction: column;
  min-height: clamp(620px, 84vh, 900px);
}
.banner-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
}
.banner-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      90deg,
      oklch(0.17 0.024 258 / 0.93) 0%,
      oklch(0.17 0.024 258 / 0.8) 34%,
      oklch(0.17 0.024 258 / 0.38) 62%,
      oklch(0.17 0.024 258 / 0.12) 100%
    ),
    linear-gradient(0deg, oklch(0.17 0.024 258 / 0.78) 0%, oklch(0.17 0.024 258 / 0) 46%);
}
.banner-in {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  align-items: center;
  padding-block: clamp(84px, 11vw, 168px) clamp(30px, 3.4vw, 46px);
}
.banner-copy {
  max-width: min(760px, 100%);
}
.banner-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.86);
  margin-bottom: 18px;
}
.banner h1 {
  color: #fff;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px oklch(0.17 0.024 258 / 0.45);
}
.banner-sub {
  font-size: clamp(1rem, 1.25vw, 1.1rem);
  line-height: 1.78;
  color: oklch(0.9 0.006 250);
  max-width: 58ch;
  margin-bottom: 32px;
}
.banner-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.banner-facts {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  display: flex;
  flex-wrap: wrap;
  gap: 18px 56px;
  padding-block: 24px 30px;
}
.banner-fact b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #fff;
}
.banner-fact span {
  font-size: 0.8rem;
  color: oklch(0.86 0.008 250);
  letter-spacing: 0.02em;
}
@media (max-width: 900px) {
  .banner {
    min-height: clamp(520px, 78vh, 700px);
  }
  .banner-img {
    object-position: center 38%;
  }
  .banner-scrim {
    background: linear-gradient(
      180deg,
      oklch(0.17 0.024 258 / 0.7) 0%,
      oklch(0.17 0.024 258 / 0.74) 46%,
      oklch(0.17 0.024 258 / 0.92) 100%
    );
  }
  .banner-in {
    padding-block: clamp(56px, 13vw, 96px) 26px;
  }
}

/* 内页首屏：同样图片上叠字 */
.phero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--on-ink);
  display: flex;
  align-items: center;
  min-height: clamp(460px, 58vh, 620px);
}
.phero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.phero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, oklch(0.17 0.024 258 / 0.6) 0%, oklch(0.17 0.024 258 / 0.8) 100%);
}
.phero-in {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-block: clamp(76px, 9.4vw, 148px) clamp(64px, 7.6vw, 120px);
  text-align: center;
}
@media (max-width: 900px) {
  .phero {
    min-height: clamp(390px, 52vh, 520px);
  }
  .phero-in {
    padding-block: clamp(58px, 11vw, 96px) clamp(50px, 9vw, 80px);
  }
}
.phero h1 {
  color: #fff;
  max-width: 26ch;
  margin-inline: auto;
}
.phero .lead {
  color: oklch(0.88 0.008 250);
  margin-top: 18px;
  max-width: 66ch;
  margin-inline: auto;
}
.crumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;

  color: oklch(0.92 0.006 250);
  margin-bottom: 20px;
}
.crumb a:hover {
  color: #fff;
}
.crumb i {
  font-style: normal;
  opacity: 0.55;
}

/* -------- 7. 认证带 -------- */
.certs {
  border-block: 1px solid var(--border);
  background: var(--sec-0);
}
.certs-in {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 34px);
  padding-block: 20px;
}
.certs-lb {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding-right: clamp(18px, 2.4vw, 34px);
  border-right: 1px solid var(--border);
}
@media (max-width: 640px) {
  .certs-lb {
    display: none;
  }
}

/* -------- 8. 网格 -------- */
.g {
  display: grid;
  gap: clamp(16px, 1.8vw, 26px);
}
.g-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.g-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.g-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
@media (max-width: 1080px) {
  .g-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 900px) {
  .g-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 640px) {
  .g-2,
  .g-3,
  .g-4 {
    grid-template-columns: minmax(0, 1fr);
  }
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 60px);
  align-items: center;
}
.split-rev .split-media {
  order: 2;
}
@media (max-width: 900px) {
  .split {
    grid-template-columns: 1fr;
  }
  .split-rev .split-media {
    order: 0;
  }
}
.grid-40 {
  gap: clamp(28px, 3.8vw, 64px);
}

.frame {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--surface);
}
.frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16/11;
}
.band-img {
  width: 100%;
  aspect-ratio: 21/9;
  object-fit: cover;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
}
@media (max-width: 640px) {
  .band-img {
    aspect-ratio: 4/3;
  }
}

.icard {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition:
    border-color 0.2s var(--ease),
    transform 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}
.icard:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: var(--sh-2);
}
.icard-img {
  aspect-ratio: 3/2;
  background: var(--surface);
  overflow: hidden;
}
.icard-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s var(--ease);
}
.icard:hover .icard-img img {
  transform: scale(1.04);
}
.icard-bd {
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  flex: 1;
}
.icard-bd h3 {
  font-size: 1.08rem;
}
.icard-bd p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.68;
  color: var(--muted);
}
.icard-kicker {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.sec-ink .icard {
  background: var(--ink-2);
  border-color: var(--hair);
}

/* 纯文字卡（用于确无配图的内容） */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: clamp(22px, 2.2vw, 30px);
  display: flex;
  flex-direction: column;
  gap: 11px;
  transition:
    border-color 0.2s var(--ease),
    transform 0.2s var(--ease);
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.card h3 {
  margin: 0;
}
.sec-ink .card {
  background: var(--ink-2);
  border-color: var(--hair);
}

/* -------- 9. 图文要点（为什么选择我们） -------- */
.points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 2.2vw, 30px) clamp(24px, 3.2vw, 48px);
}
@media (max-width: 720px) {
  .points {
    grid-template-columns: 1fr;
  }
}
.point {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding-top: 20px;
  border-top: 2px solid var(--border);
}
.point-n {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding-top: 4px;
}
.point b {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 7px;
  letter-spacing: -0.01em;
}
.point p {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.72;
  color: var(--muted);
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 13px;
  padding: 15px 0;
  border-bottom: 1px solid var(--border);
}
.sec-ink .list li {
  border-color: var(--hair);
}
.list li:first-child {
  padding-top: 0;
}
.list .li-ico {
  width: 19px;
  height: 19px;
  color: var(--fg);
  margin-top: 4px;
}
.sec-ink .list .li-ico {
  color: var(--on-ink);
}
.list b {
  display: block;
  font-weight: 600;
  font-size: 0.96rem;
  margin-bottom: 3px;
}
.list p {
  margin: 0;
  font-size: 0.89rem;
  color: var(--muted);
  line-height: 1.68;
}
.sec-ink .list p {
  color: var(--on-ink-muted);
}

.spec {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.spec th,
.spec td {
  text-align: left;
  padding: 13px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.spec th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}
.spec td:first-child {
  font-weight: 600;
  white-space: nowrap;
}
.spec tr:hover td {
  background: var(--surface);
}

/* -------- 10. 数据带 -------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.sec-ink .stats {
  background: var(--hair);
  border-color: var(--hair);
}
.stat {
  background: var(--bg);
  padding: clamp(22px, 2.4vw, 34px);
  text-align: center;
}
.sec-ink .stat {
  background: var(--ink);
}
.stat b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.stat span {
  display: block;
  margin-top: 8px;
  font-size: 0.84rem;
  color: var(--muted);
}
.sec-ink .stat span {
  color: var(--on-ink-muted);
}
@media (max-width: 900px) {
  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 480px) {
  .stats {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* -------- 11. 产品中心（左侧分类树 + 右侧产品图墙） -------- */
.catalog {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 52px);
  align-items: start;
}
@media (max-width: 1000px) {
  .catalog {
    grid-template-columns: 1fr;
  }
}


.side {
  position: sticky;
  top: 154px;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg);
  overflow: hidden;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  background: color-mix(in oklab, var(--bg) 94%, transparent);
}
@media (max-width: 1000px) {
  .side {
    position: static;
  }
}
.side-hd {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.side-hd h2 {
  font-size: 1.02rem;
}
.side-hd span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 5px;
}
.side-nav {
  padding: 8px 0 12px;
}
.side-nav a {
  display: block;
  padding: 10px 20px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--fg);
  border-left: 3px solid transparent;
  transition:
    background-color 0.16s var(--ease),
    border-color 0.16s var(--ease),
    color 0.16s var(--ease);
}
.side-nav a:hover {
  background: var(--surface);
}
.side-nav a[aria-current='true'] {
  border-left-color: var(--fg);
  background: var(--surface);
  font-weight: 600;
}
.side-nav .sub {
  padding-left: 34px;
  font-size: 0.86rem;
  font-weight: 400;
  color: var(--muted);
}
.side-nav .sub:hover {
  color: var(--fg);
}
.side-cta {
  padding: 18px 20px 20px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.side-cta p {
  font-size: 0.84rem;
  color: var(--muted);
  margin-bottom: 12px;
}


.pgroup {
  scroll-margin-top: 156px;
  padding-block: clamp(20px, 2.4vw, 32px);
  border-radius: var(--r-lg);
}
.pgroup:nth-child(even) {
  background: var(--sec-1);
}
.pgroup-sub-block {
  scroll-margin-top: 156px !important;
}
.pgroup + .pgroup {
  margin-top: clamp(6px, 0.8vw, 12px);
}
.pgroup-hd {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--fg);
  margin-bottom: 22px;
}
.pgroup-hd h3 {
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
}
.pgroup-hd .en {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-left: 10px;
  font-weight: 500;
}
.pgroup-hd .ct {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--muted);
  margin-left: auto;
}
.pgroup-sub {
  margin: -8px 0 22px;
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 70ch;
  line-height: 1.7;
}


.pitem {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg);
  overflow: hidden;
  transition:
    border-color 0.18s var(--ease),
    transform 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
}
.pitem:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: var(--sh-2);
}
.pitem-img {
  position: relative;
  aspect-ratio: 4/3;
  background: #fff;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pitem-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 10px;
  transition: transform 0.5s var(--ease);
}
.pitem:hover .pitem-img img {
  transform: scale(1.05);
}
.pitem-bd {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}
.pitem-bd h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.42;
  letter-spacing: -0.008em;
}
.pitem-cat {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.pitem-model {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}
.pempty {
  text-align: center;
  padding: 64px 0;
  color: var(--muted);
}

.pbar {
  position: sticky;
  top: 74px;
  z-index: 60;
  background: color-mix(in oklab, var(--bg) 94%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.pbar-in {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-block: 12px;
}
.pbar-note {
  font-size: 0.82rem;
  color: var(--muted);
  margin-right: auto;
}
.pbar-note b {
  color: var(--fg);
  font-family: var(--font-mono);
}
.pnav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-right: auto;
}
.pnav a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  font-size: 0.9rem;
  font-weight: 550;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition:
    color 0.16s var(--ease),
    border-color 0.16s var(--ease),
    background-color 0.16s var(--ease);
}
.pnav a:hover {
  color: var(--fg);
  border-color: var(--border-strong);
  background: var(--surface);
}
.pgroup-sub-block + .pgroup-sub-block {
  margin-top: clamp(30px, 3.4vw, 48px);
}
.frame + .g,
.frame + .cases {
  margin-top: clamp(24px, 2.8vw, 40px);
}
.search {
  position: relative;
  display: flex;
  align-items: center;
}
.search svg {
  position: absolute;
  left: 13px;
  width: 16px;
  height: 16px;
  color: var(--muted);
  pointer-events: none;
}
.search input {
  min-height: 44px;
  width: min(300px, 58vw);
  padding: 0 14px 0 38px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  background: var(--bg);
  font-size: 0.9rem;
}
.search input:focus {
  outline: none;
  border-color: var(--accent-ink);
  box-shadow: 0 0 0 3px oklch(0.705 0.148 62 / 0.16);
}

/* 数字卡行：上浮压住 banner 下沿 */
.numrow {
  position: relative;
  z-index: 5;
  margin-top: clamp(-84px, -5.4vw, -44px);
}
@media (max-width: 760px) {
  .numrow {
    margin-top: 0;
  }
}
.numrow .numcard {
  box-shadow: var(--sh-2);
}

/* 横向卡：图左文右 */
.hcard {
  display: grid;
  grid-template-columns: minmax(0, 0.4fr) minmax(0, 1fr);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg);
  overflow: hidden;
  transition:
    border-color 0.22s var(--ease),
    transform 0.22s var(--ease),
    box-shadow 0.22s var(--ease);
}
.hcard + .hcard {
  margin-top: 16px;
}
.hcard:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: var(--sh-2);
}
.hcard-img {
  position: relative;
  min-height: 186px;
  background: var(--surface);
}
.hcard-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.hcard:hover .hcard-img img {
  transform: scale(1.05);
}
.hcard-bd {
  padding: clamp(20px, 2.2vw, 30px) clamp(22px, 2.6vw, 34px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 9px;
}
.hcard-bd h3 {
  font-size: 1.1rem;
}
.hcard-bd p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--muted);
}
@media (max-width: 760px) {
  .hcard {
    grid-template-columns: 1fr;
  }
  .hcard-img {
    min-height: 200px;
  }
}

/* 认证跑马灯：纯 CSS 无缝滚动，不依赖 JS */
.cert-swiper {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 5%, #000 95%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 5%, #000 95%, transparent 100%);
}
.cert-track {
  display: flex;
  width: max-content;
  gap: 46px;
  animation: certScroll 36s linear infinite;
}
.cert-swiper:hover .cert-track {
  animation-play-state: paused;
}
@keyframes certScroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}
.cert-item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 0.88rem;
  font-weight: 550;
  white-space: nowrap;
}
.cert-item::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--border-strong);
  flex: none;
  border-radius: 50%;
}
@media (prefers-reduced-motion: reduce) {
  .cert-track {
    animation: none;
  }
}

/* -------- 12. 解决方案 -------- */
.panel[hidden] {
  display: none;
}

.sgrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 1.8vw, 24px);
}
@media (max-width: 1080px) {
  .sgrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 680px) {
  .sgrid {
    grid-template-columns: minmax(0, 1fr);
  }
}
.scard {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg);
  padding: 22px 24px 24px;
  transition:
    border-color 0.18s var(--ease),
    transform 0.18s var(--ease);
}
.scard:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.scard-hd {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.scard-hd h3 {
  font-size: 1.02rem;
}
.scard-hd .n {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
}
.scard p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--muted);
}
.scard p + p {
  margin-top: 10px;
}
.sec-ink .scard {
  background: var(--ink-2);
  border-color: var(--hair);
}
.sec-ink .scard .scard-hd {
  border-color: var(--hair);
}

/* -------- 13. 案例：图片上覆盖文字 -------- */
.cases {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 1.8vw, 24px);
}
.case {
  position: relative;
  display: block;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--ink-2);
}
.case img {
  width: 100%;
  aspect-ratio: 4/3;
  height: auto;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.6s var(--ease);
}
/* 氛围遮罩：图片整体由亮到暗过渡，避免下半部照片过曝 */
.case::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(0deg, rgba(16, 22, 32, 0.42) 0%, rgba(16, 22, 32, 0.12) 34%, rgba(16, 22, 32, 0) 62%);
}
.case:hover img {
  transform: scale(1.04);
}
/* 标题条自带遮罩：对比度只取决于自身，与内容行数无关（最坏情况纯白底 ≈7:1） */
.case-cap {
  position: absolute;
  z-index: 2;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 18px 20px 20px;
  color: #fff;
  background: linear-gradient(0deg, rgba(16, 22, 32, 0.8) 0%, rgba(16, 22, 32, 0.7) 100%);
}
.case-cap::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 100%;
  height: 72px;
  pointer-events: none;
  background: linear-gradient(0deg, rgba(16, 22, 32, 0.7) 0%, rgba(16, 22, 32, 0.34) 46%, rgba(16, 22, 32, 0) 100%);
}
.case-cap .k {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.84);
  text-shadow: 0 1px 10px rgba(10, 14, 22, 0.72);
}
.case-cap h3 {
  color: #fff;
  font-size: 0.98rem;
  margin: 6px 0 0;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 14px rgba(10, 14, 22, 0.75);
}
.case-cap p {
  margin: 5px 0 0;
  font-size: 0.81rem;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.55;
  text-shadow: 0 1px 10px rgba(10, 14, 22, 0.72);
}
@media (max-width: 1000px) {
  .cases {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 640px) {
  .cases {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* -------- 14. 手风琴 -------- */
.acc {
  border-top: 1px solid var(--border);
}
.acc-item {
  border-bottom: 1px solid var(--border);
}
.acc-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  text-align: left;
  padding: 20px 0;
  min-height: 48px;
}
.acc-q h3 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
}
.acc-q .ic {
  width: 22px;
  height: 22px;
  flex: none;
  color: var(--muted);
  position: relative;
  margin-top: 3px;
}
.acc-q .ic::before,
.acc-q .ic::after {
  content: '';
  position: absolute;
  background: currentColor;
  transition:
    transform 0.22s var(--ease),
    opacity 0.22s var(--ease);
}
.acc-q .ic::before {
  left: 3px;
  right: 3px;
  top: 10.5px;
  height: 1.5px;
}
.acc-q .ic::after {
  top: 3px;
  bottom: 3px;
  left: 10.5px;
  width: 1.5px;
}
.acc-q[aria-expanded='true'] .ic::after {
  transform: scaleY(0);
  opacity: 0;
}
.js .acc-a {
  overflow: hidden;
  height: 0;
  transition: height 0.28s var(--ease);
}
.acc-a-in {
  padding: 0 0 22px;
  max-width: 80ch;
}
.acc-a p {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.75;
}

/* -------- 15. 表单 -------- */
.form {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field-full {
  grid-column: 1 / -1;
}
.field label {
  font-size: 0.86rem;
  font-weight: 600;
}
.field label .req {
  color: var(--fg);
  margin-left: 3px;
}
.field input,
.field textarea,
.field select {
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  background: var(--bg);
  font-size: 0.95rem;
  transition:
    border-color 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
}
/* 下拉框：抹掉系统默认外观，换成细箭头 —— 默认那枚立体小三角跟这一版表单的
   hairline 描边完全不是一个语汇，几个控件排在一起会露怯。 */
.field select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 42px;
  cursor: pointer;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236E7787' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 15px;
}
.field textarea {
  min-height: 140px;
  resize: vertical;
  line-height: 1.65;
}
.field input:hover,
.field textarea:hover,
.field select:hover {
  border-color: var(--muted);
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent-ink);
  box-shadow: 0 0 0 3px oklch(0.705 0.148 62 / 0.16);
}
.field .err {
  font-size: 0.78rem;
  color: var(--danger);
  min-height: 1.1em;
}
.field[data-invalid='true'] input,
.field[data-invalid='true'] textarea,
.field[data-invalid='true'] select {
  border-color: var(--danger);
}
/* 蜜罐：给爬虫填的字段。挪出视口但仍在表单里，真人看不见、Tab 也到不了。 */
.hp {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.form-status {
  grid-column: 1 / -1;
  font-size: 0.88rem;
  padding: 14px 16px;
  border-radius: var(--r);
  display: none;
}
.form-status[data-state='ok'] {
  display: block;
  background: oklch(0.95 0.04 152);
  color: oklch(0.36 0.1 152);
  border: 1px solid oklch(0.85 0.07 152);
}
.form-status[data-state='err'] {
  display: block;
  background: oklch(0.96 0.03 25);
  color: oklch(0.42 0.15 25);
  border: 1px solid oklch(0.88 0.06 25);
}
.form-status[data-state='wait'] {
  display: block;
  background: var(--surface);
  color: var(--muted);
  border: 1px solid var(--border);
}
@media (max-width: 640px) {
  .form {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* -------- 16. 联系信息 -------- */
.info {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.info-col {
  background: var(--bg);
  padding: clamp(22px, 2.4vw, 32px);
  display: flex;
  flex-direction: column;
  gap: 13px;
}
.info-col h3 {
  font-size: 1.02rem;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.info-row {
  display: flex;
  gap: 10px;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--muted);
}
.info-row svg {
  width: 16px;
  height: 16px;
  flex: none;
  margin-top: 4px;
  color: var(--muted);
}
.info-row b {
  color: var(--fg);
  font-weight: 600;
}
@media (max-width: 900px) {
  .info {
    grid-template-columns: 1fr;
  }
}

/* -------- 17. 页脚 -------- */
.ft {
  background: var(--ink);
  color: var(--on-ink);
  padding-top: clamp(48px, 5.4vw, 76px);
}
.ft-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: clamp(26px, 3.2vw, 48px);
  padding-bottom: clamp(36px, 4.2vw, 58px);
}
.ft h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-ink-muted);
  font-weight: 500;
  margin-bottom: 16px;
}
.ft ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ft a {
  font-size: 0.89rem;
  color: var(--on-ink-muted);
  transition: color 0.16s var(--ease);
}
.ft a:hover {
  color: var(--on-ink);
}
.ft .brand-en {
  color: var(--on-ink);
}
.ft .brand-cn {
  color: var(--on-ink-muted);
}
.ft-about {
  font-size: 0.89rem;
  color: var(--on-ink-muted);
  line-height: 1.72;
  max-width: 36ch;
  margin: 18px 0 0;
}
.ft-bot {
  border-top: 1px solid var(--hair);
  padding-block: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--on-ink-muted);
}
.ft-bot .mono {
  font-size: 0.76rem;
}


.ft-wx {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-top: 6px;
}
.ft-wx img {
  display: block;
  width: 104px;
  height: 104px;
  border-radius: 4px;
}
.ft-wx span {
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--on-ink-muted);
}


.ft-legal a {
  font-size: 0.8rem;
}
@media (max-width: 900px) {
  .ft-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 560px) {
  .ft-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* -------- 18. 底部 CTA -------- */
.cta {
  position: relative;
  overflow: hidden;
  background: var(--ink-2);
  color: var(--on-ink);
}
.cta-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
}
.cta-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, oklch(0.17 0.024 258 / 0.84), oklch(0.17 0.024 258 / 0.94));
}
.cta-in {
  position: relative;
  z-index: 2;
  padding-block: clamp(58px, 6.6vw, 96px);
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) auto;
  gap: clamp(24px, 3.6vw, 56px);
  align-items: center;
}
.cta h2 {
  color: #fff;
  max-width: 26ch;
}
.cta p {
  color: oklch(0.87 0.008 250);
  margin-top: 14px;
  max-width: 56ch;
}
.cta-act {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
@media (max-width: 860px) {
  .cta-in {
    grid-template-columns: 1fr;
  }
}

/* -------- 19. 底图卡 / 数字卡 / 轮播 -------- */
/* 底图卡：图片铺满、文字压在图上 */
.ovcard {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: clamp(290px, 30vw, 400px);
  border-radius: var(--r-lg);
  overflow: hidden;
  padding: 26px 26px 28px;
  background: var(--ink-2);
  border: 1px solid var(--border);
  color: #fff;
  transition:
    transform 0.3s var(--ease),
    box-shadow 0.3s var(--ease),
    border-color 0.3s var(--ease);
}
.ovcard img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}
.ovcard::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    oklch(0.17 0.024 258 / 0.3) 0%,
    oklch(0.17 0.024 258 / 0.66) 44%,
    oklch(0.17 0.024 258 / 0.93) 100%
  );
  transition: opacity 0.3s var(--ease);
}
.ovcard:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-2);
  border-color: var(--border-strong);
}
.ovcard:hover img {
  transform: scale(1.07);
}
.ovcard:hover::after {
  opacity: 0.9;
}
.ovcard > * {
  position: relative;
  z-index: 2;
}
.ovcard-n {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 12px;
}
.ovcard h3 {
  color: #fff;
  font-size: 1.16rem;
  margin: 0 0 9px;
  letter-spacing: -0.012em;
}
.ovcard p {
  margin: 0;
  font-size: 0.855rem;
  line-height: 1.7;
  color: oklch(0.885 0.008 250);
}

/* 数字卡：统计数字 + 滚动跳动 */
.numcard {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: clamp(26px, 2.8vw, 40px) clamp(16px, 1.6vw, 24px);
  transition:
    border-color 0.22s var(--ease),
    transform 0.22s var(--ease),
    box-shadow 0.22s var(--ease);
}
.numcard:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
  box-shadow: var(--sh-2);
}
.numcard-n {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1;
  font-size: clamp(2.1rem, 4vw, 3.15rem);
  letter-spacing: -0.035em;
  color: var(--fg);
}
.numcard-n .u {
  font-size: 0.48em;
  color: inherit;
  margin-left: 2px;
  letter-spacing: 0;
}
.numcard-lb {
  display: block;
  margin-top: 13px;
  font-size: 0.9rem;
  color: var(--fg);
  font-weight: 550;
}
.numcard-en {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}
.sec-ink .numcard {
  background: var(--ink-2);
  border-color: var(--hair);
}
.sec-ink .numcard-n {
  color: #fff;
}
.sec-ink .numcard-lb {
  color: var(--on-ink);
}
.sec-ink .numcard-en {
  color: var(--on-ink-muted);
}
.sec-ink .numcard-n .u {
  color: inherit;
}

/* Swiper 轮播 */
.swiper {
  overflow: hidden;
}
.swiper-slide {
  height: auto;
}
.case-swiper .swiper-slide {
  display: flex;
}
.case-swiper .swiper-slide .case {
  width: 100%;
}
.cert-swiper .swiper-slide {
  width: auto;
}
.swiper-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 26px;
}
.swiper-nav {
  display: flex;
  gap: 10px;
}
.swiper-btn {
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  background: var(--bg);
  color: var(--fg);
  transition:
    border-color 0.18s var(--ease),
    background-color 0.18s var(--ease),
    transform 0.16s var(--ease);
}
.swiper-btn:hover {
  border-color: var(--fg);
  background: var(--surface);
}
.swiper-btn:active {
  transform: translateY(2px);
}
.swiper-btn svg {
  width: 16px;
  height: 16px;
}
/* swiper-bundle.min.css 在 site.css 之后加载，其 .swiper-pagination-bullet-active
   为 #007aff 蓝色，且同特异性下靠源序胜出。此处同时改写 Swiper 变量并提高选择器权重。 */
.swiper-pagination {
  position: static !important;
  width: auto !important;
  display: flex;
  align-items: center;
  gap: 7px;
  --swiper-pagination-color: var(--accent);
  --swiper-pagination-bullet-inactive-color: color-mix(in oklab, var(--accent), white 58%);
  --swiper-pagination-bullet-inactive-opacity: 1;
}
.swiper-pagination .swiper-pagination-bullet {
  width: 8px;
  height: 8px;
  margin: 0 !important;
  opacity: 1;
  background: color-mix(in oklab, var(--accent), white 58%);
  transition:
    width 0.24s var(--ease),
    background-color 0.24s var(--ease);
}
.swiper-pagination .swiper-pagination-bullet-active {
  width: 26px;
  border-radius: 4px;
  background: var(--accent);
}
/* 圆点视觉尺寸仅 8px，命中区域过小。用伪元素扩至 14×32，不加内边距、不改布局；
   横向只扩 3px，恰为 gap 的一半，相邻圆点热区不重叠。 */
.swiper-pagination .swiper-pagination-bullet {
  position: relative;
}
.swiper-pagination .swiper-pagination-bullet::after {
  content: '';
  position: absolute;
  inset: -12px -3px;
}
.sec-ink .swiper-btn {
  background: transparent;
  border-color: var(--hair);
  color: var(--on-ink);
}
.sec-ink .swiper-btn:hover {
  border-color: var(--on-ink);
  background: rgba(255, 255, 255, 0.08);
}
.sec-ink .swiper-pagination-bullet {
  background: color-mix(in oklab, var(--accent), white 34%);
}
.sec-ink .swiper-pagination-bullet-active {
  background: #fff;
}

/* 项目名清单 */
.proj-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0 24px;
}
.proj-list li {
  padding: 13px 0;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--hair);
  color: var(--on-ink-muted);
}
.sec:not(.sec-ink) .proj-list li {
  border-color: var(--border);
  color: var(--muted);
}
@media (max-width: 900px) {
  .proj-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 520px) {
  .proj-list {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* -------- 20. 动效 -------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  [data-aos] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

html.aos-off [data-aos] {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}

/* -------- 21. 工具类 -------- */
.mt-0 {
  margin-top: 0;
}
.mt-1 {
  margin-top: 12px;
}
.mt-2 {
  margin-top: 22px;
}
.mt-3 {
  margin-top: 34px;
}
.mt-4 {
  margin-top: 52px;
}
.center {
  text-align: center;
}
.nowrap {
  white-space: nowrap;
}
.quote {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.8vw, 2.1rem);
  line-height: 1.4;
  letter-spacing: -0.018em;
  max-width: 26ch;
}

/* -------- 22. 打印 -------- */
@media print {
  .hdr,
  .mob,
  .cta,
  .ft,
  .burger,
  .pbar,
  .side {
    display: none;
  }
  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }
  .sec {
    padding-block: 18pt;
  }
}