/* =========================================================================
   Weseeing 官网 — 主站设计系统
   适用于首页 / 产品中心 / 解决方案 / 关于我们 / 联系我们 及英文站
   独立于历史 Bootstrap 打包文件，避免样式冲突并减少首屏体积。
   ========================================================================= */

/* ---------- 1. Tokens ---------- */
:root {
  --ink: #0f1317;
  --ink-soft: #1b232a;
  --text: #333c44;
  --muted: #6b7580;
  --line: #e4e8eb;
  --line-2: #cfd6db;
  --bg: #ffffff;
  --bg-2: #f4f6f7;
  --bg-3: #eaedef;
  --brand: #0f8f83;
  --brand-ink: #0a6b62;
  --brand-soft: #e6f3f1;
  --signal: #c9761c;
  --signal-soft: #fdf1e2;
  --radius: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(15, 19, 23, 0.06);
  --shadow: 0 16px 40px -24px rgba(15, 19, 23, 0.35);
  --shadow-lg: 0 30px 70px -40px rgba(15, 19, 23, 0.5);
  --hdr-h: 72px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--hdr-h) + 16px);
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.is-locked {
  overflow: hidden;
}
img {
  max-width: 100%;
  height: auto;
  border: 0;
}
a {
  color: var(--brand-ink);
  text-decoration: none;
}
a:hover {
  color: var(--brand);
}
button {
  font: inherit;
  color: inherit;
}
ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
h1,
h2,
h3,
h4,
p {
  margin: 0;
}
svg {
  display: block;
}
::selection {
  background: var(--brand);
  color: #fff;
}

/* ---------- 3. Layout ---------- */
.wrap {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px) {
  .wrap {
    padding: 0 40px;
  }
}
@media (min-width: 1200px) {
  .wrap {
    padding: 0 80px;
  }
}
@media (min-width: 1440px) {
  .wrap {
    padding: 0 120px;
  }
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 12px 18px;
  background: var(--ink);
  color: #fff;
  border-radius: 0 0 var(--radius) 0;
}
.skip:focus {
  left: 0;
  color: #fff;
}

/* ---------- 4. Typography ---------- */
h1,
h2,
h3,
h4 {
  color: var(--ink);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
}
.h1 {
  font-size: 44px;
  line-height: 1.18;
}
.h2 {
  font-size: 32px;
}
.h3 {
  font-size: 21px;
}
.h4 {
  font-size: 17px;
}
.lead {
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--brand-ink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--brand);
}
.muted {
  color: var(--muted);
}
.strong {
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 5. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.btn:active {
  transform: translateY(1px);
}
.btn--brand {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}
.btn--brand:hover {
  background: var(--brand-ink);
  border-color: var(--brand-ink);
  color: #fff;
}
.btn--dark {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.btn--dark:hover {
  background: #000;
  border-color: #000;
  color: #fff;
}
.btn--ghost {
  background: #fff;
  border-color: var(--line-2);
  color: var(--ink);
}
.btn--ghost:hover {
  border-color: var(--ink);
  color: var(--ink);
}
.btn--on-dark {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}
.btn--on-dark:hover {
  background: #fff;
  color: var(--ink);
}
.btn--sm {
  min-height: 40px;
  padding: 0 16px;
  font-size: 14px;
}
.btn--block {
  width: 100%;
}
.ico {
  width: 18px;
  height: 18px;
  flex: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}
.ico--sm {
  width: 15px;
  height: 15px;
}
.ico--lg {
  width: 22px;
  height: 22px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand-ink);
  font-size: 15px;
  font-weight: 600;
}
.link-arrow .ico {
  transition: transform 0.18s var(--ease);
}
.link-arrow:hover .ico {
  transform: translateX(3px);
}

/* ---------- 6. Tags / pills / ticks ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--bg-3);
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.5;
}
.tag--brand {
  background: var(--brand-soft);
  color: var(--brand-ink);
}
.tag--signal {
  background: var(--signal-soft);
  color: var(--signal);
}

.ticks {
  display: grid;
  gap: 10px;
}
.ticks li {
  position: relative;
  padding-left: 26px;
  color: var(--text);
  font-size: 15px;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 8px;
  border-left: 2px solid var(--brand);
  border-bottom: 2px solid var(--brand);
  transform: rotate(-45deg);
}
.ticks--sm li {
  font-size: 14px;
}

/* ---------- 7. Header ---------- */
.hdr {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.hdr.is-scrolled {
  box-shadow: 0 6px 20px -14px rgba(15, 19, 23, 0.5);
}
.hdr__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: var(--hdr-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}
.brand__logo {
  width: 112px;
  height: 43px;
  object-fit: contain;
}
.brand__text {
  display: none;
}
.hdr__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
}
.hdr__bars,
.hdr__bars::before,
.hdr__bars::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.hdr__bars {
  position: relative;
}
.hdr__bars::before,
.hdr__bars::after {
  content: "";
  position: absolute;
  left: 0;
}
.hdr__bars::before {
  top: -6px;
}
.hdr__bars::after {
  top: 6px;
}
.hdr__toggle[aria-expanded="true"] .hdr__bars {
  background: transparent;
}
.hdr__toggle[aria-expanded="true"] .hdr__bars::before {
  transform: translateY(6px) rotate(45deg);
}
.hdr__toggle[aria-expanded="true"] .hdr__bars::after {
  transform: translateY(-6px) rotate(-45deg);
}

.nav {
  display: none;
  flex: 1 1 auto;
  align-items: center;
  justify-content: flex-end;
  gap: 28px;
}
.nav.is-open {
  display: block;
  position: absolute;
  top: var(--hdr-h);
  left: 0;
  right: 0;
  max-height: calc(100vh - var(--hdr-h));
  overflow-y: auto;
  padding: 16px 20px 26px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.nav__list {
  display: flex;
  flex-direction: column;
}
.nav__item {
  position: relative;
  border-bottom: 1px solid var(--line);
}
.nav__item:last-child {
  border-bottom: 0;
}
.nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 14px 2px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 500;
}
.nav__link:hover,
.nav__link.is-current {
  color: var(--brand-ink);
}
.nav__link.is-current {
  font-weight: 600;
}
.nav__link--drop .ico {
  transition: transform 0.2s var(--ease);
}
.nav__item.is-open > .nav__link--drop .ico {
  transform: rotate(180deg);
}
.drop {
  display: none;
  padding: 4px 0 14px;
}
.nav__item.is-open .drop {
  display: block;
}
.drop__link {
  display: block;
  padding: 12px 12px;
  border-radius: var(--radius);
  color: var(--ink);
}
.drop__link:hover {
  background: var(--bg-2);
  color: var(--ink);
}
.drop__t {
  display: block;
  font-size: 15px;
  font-weight: 600;
}
.drop__d {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}
.nav__end {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 20px;
}

.lang {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: var(--bg-2);
}
.lang__i {
  padding: 5px 12px;
  border-radius: 4px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
}
.lang__i:hover {
  color: var(--ink);
}
.lang__i.is-on {
  background: #fff;
  box-shadow: var(--shadow-sm);
  color: var(--ink);
}

@media (min-width: 1024px) {
  .hdr__toggle {
    display: none;
  }
  .nav {
    display: flex;
    position: static;
    max-height: none;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
  }
  .nav__list {
    flex-direction: row;
    align-items: center;
    gap: 30px;
  }
  .nav__item {
    border-bottom: 0;
  }
  .nav__link {
    padding: 10px 0;
    font-size: 15px;
  }
  .nav__link--drop {
    gap: 5px;
  }
  .drop {
    position: absolute;
    top: calc(100% + 6px);
    left: -14px;
    z-index: 20;
    width: 320px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow);
  }
  .nav__item:hover .drop,
  .nav__item:focus-within .drop {
    display: block;
  }
  .nav__end {
    margin-top: 0;
  }
}
@media (min-width: 1200px) {
  .nav__list {
    gap: 38px;
  }
}

/* ---------- 8. Page hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--bg-2);
}
.hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 18% center;
}
.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    90deg,
    rgba(244, 246, 247, 0.97) 0%,
    rgba(244, 246, 247, 0.9) 36%,
    rgba(244, 246, 247, 0) 74%
  );
}
.hero--dark .hero__scrim {
  background: linear-gradient(
    90deg,
    rgba(15, 19, 23, 0.94) 0%,
    rgba(15, 19, 23, 0.82) 40%,
    rgba(15, 19, 23, 0.12) 78%
  );
}
@media (max-width: 767px) {
  .hero__bg {
    object-position: 76% center;
  }
  .hero__scrim {
    background: linear-gradient(
      180deg,
      rgba(244, 246, 247, 0.96) 0%,
      rgba(244, 246, 247, 0.9) 58%,
      rgba(244, 246, 247, 0.86) 100%
    );
  }
  .hero--dark .hero__scrim {
    background: linear-gradient(
      180deg,
      rgba(15, 19, 23, 0.94) 0%,
      rgba(15, 19, 23, 0.88) 70%,
      rgba(15, 19, 23, 0.7) 100%
    );
  }
}
.hero__in {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 420px;
  padding-top: 56px;
  padding-bottom: 56px;
}
.hero__h1 {
  max-width: 13.5em;
  font-size: 30px;
  line-height: 1.24;
}
.hero__lead {
  max-width: 31em;
  margin-top: 18px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.85;
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid rgba(15, 19, 23, 0.14);
}
.hero__facts li {
  color: var(--ink-soft);
  font-size: 14px;
}
.hero__facts b {
  display: block;
  color: var(--ink);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.3;
}

@media (min-width: 768px) {
  .hero__in {
    min-height: 480px;
    padding-top: 72px;
    padding-bottom: 72px;
  }
  .hero__h1 {
    font-size: 40px;
  }
  .hero__lead {
    font-size: 17px;
  }
}
@media (min-width: 1024px) {
  .hero__in {
    min-height: 560px;
  }
  .hero__h1 {
    font-size: 50px;
  }
}

/* Dark hero variant (uses a studio product photo as the backdrop) */
.hero--dark {
  background: var(--ink);
}
.hero--dark .hero__h1,
.hero--dark .hero__facts b {
  color: #fff;
}
.hero--dark .hero__lead {
  color: rgba(255, 255, 255, 0.78);
}
.hero--dark .eyebrow {
  color: #7fd8cd;
}
.hero--dark .eyebrow::before {
  background: #7fd8cd;
}
.hero--dark .hero__facts {
  border-top-color: rgba(255, 255, 255, 0.18);
}
.hero--dark .hero__facts li {
  color: rgba(255, 255, 255, 0.72);
}
.hero--dark .hero__facts b {
  color: #fff;
}

/* Compact interior hero used on inner pages */
.page-head {
  position: relative;
  overflow: hidden;
  padding: 46px 0 40px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
}
.page-head__h1 {
  font-size: 30px;
  line-height: 1.3;
}
.page-head__lead {
  max-width: 46em;
  margin-top: 14px;
  color: var(--muted);
  font-size: 16px;
}
.page-head--media .page-head__in {
  display: flex;
  flex-direction: column;
  gap: 30px;
}
.page-head__media {
  align-self: stretch;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.page-head__media img {
  width: 100%;
  max-width: 560px;
  mix-blend-mode: multiply;
}
@media (min-width: 768px) {
  .page-head {
    padding: 62px 0 56px;
  }
  .page-head__h1 {
    font-size: 38px;
  }
}
@media (min-width: 1024px) {
  .page-head--media .page-head__in {
    flex-direction: row;
    align-items: center;
    gap: 48px;
  }
  .page-head__in {
    flex: 1 1 auto;
  }
  .page-head--media .page-head__text {
    flex: 0 1 54%;
  }
  .page-head--media .page-head__media {
    flex: 0 1 46%;
  }
}

/* ---------- 9. Breadcrumb ---------- */
.crumbs {
  padding: 16px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.crumbs li::after {
  content: "/";
  margin-left: 8px;
  color: var(--line-2);
}
.crumbs li:last-child::after {
  content: "";
}
.crumbs a {
  color: var(--muted);
}
.crumbs a:hover {
  color: var(--ink);
}
.crumbs [aria-current] {
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 10. Sections ---------- */
.sec {
  padding: 52px 0;
}
.sec--tight {
  padding: 34px 0;
}
.sec--bg {
  background: var(--bg-2);
}
.sec--line {
  border-top: 1px solid var(--line);
}
.sec__head {
  max-width: 760px;
  margin-bottom: 34px;
}
.sec__head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.sec__head--center .eyebrow {
  justify-content: center;
}
.sec__h2 {
  font-size: 26px;
  line-height: 1.3;
}
.sec__lead {
  margin-top: 14px;
  color: var(--muted);
  font-size: 16px;
}
.sec__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}
@media (min-width: 768px) {
  .sec {
    padding: 76px 0;
  }
  .sec--tight {
    padding: 46px 0;
  }
  .sec__h2 {
    font-size: 32px;
  }
  .sec__head {
    margin-bottom: 44px;
  }
}

/* ---------- 11. Grids ---------- */
.grid {
  display: grid;
  gap: 20px;
}
.grid--2,
.grid--3,
.grid--4 {
  grid-template-columns: 1fr;
}
@media (min-width: 700px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .grid--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .grid--wide {
    grid-template-columns: 1.15fr 1fr;
    align-items: center;
    gap: 60px;
  }
}
.grid--gap {
  gap: 32px;
}

/* ---------- 12. Cards ---------- */
.card {
  display: flex;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
}
.card--flat {
  border-color: transparent;
  background: var(--bg-2);
}
.card--pad-lg {
  padding: 30px;
}
.card__h3 {
  font-size: 18px;
}
.card__p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 15px;
}
.card__ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: var(--radius);
  background: var(--brand-soft);
  color: var(--brand-ink);
}
.card__num {
  display: block;
  margin-bottom: 14px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

/* Stat block */
.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--line);
}
.stats__i {
  padding: 22px 20px;
  background: #fff;
}
.stats__n {
  display: block;
  color: var(--ink);
  font-size: 26px;
  font-weight: 600;
  line-height: 1.2;
}
.stats__l {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}
@media (min-width: 768px) {
  .stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .stats__n {
    font-size: 30px;
  }
}

/* ---------- 13. Solution cards ---------- */
.sol {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease),
    transform 0.2s var(--ease);
}
.sol:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.sol__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-2);
  overflow: hidden;
}
.sol__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.sol__badge {
  position: absolute;
  left: 16px;
  top: 16px;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-size: 12px;
  font-weight: 600;
}
.sol__body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  padding: 24px;
}
.sol__h3 {
  font-size: 20px;
}
.sol__p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 15px;
}
.sol__list {
  margin-top: 18px;
}
.sol__foot {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

/* ---------- 14. Product cards ---------- */
.prod {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease),
    transform 0.2s var(--ease);
}
.prod:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.prod__media {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 3;
  padding: 18px;
  background: var(--bg-2);
}
.prod__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
}
.prod__body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  padding: 20px;
}
.prod__cat {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.prod__name {
  margin-top: 6px;
  font-size: 17px;
  color: var(--ink);
  font-weight: 600;
}
.prod__name a {
  color: inherit;
}
.prod__name a:hover {
  color: var(--brand-ink);
}
.prod__specs {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}
.prod__foot {
  margin-top: auto;
  padding-top: 16px;
}

/* Feature (large) product row */
.spot {
  display: grid;
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
}
.spot__media {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  padding: 24px;
  background: var(--bg-2);
}
.spot__media img {
  width: 100%;
  max-width: 520px;
  mix-blend-mode: multiply;
}
.spot__body {
  padding: 28px 26px 30px;
}
.spot__h3 {
  font-size: 24px;
}
.spot__p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 15px;
}
.spot__specs {
  display: grid;
  gap: 1px;
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}
.spot__specs div {
  padding: 12px 16px;
  background: #fff;
}
.spot__specs dt {
  color: var(--muted);
  font-size: 12px;
}
.spot__specs dd {
  margin: 2px 0 0;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}
.spot__specs {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (min-width: 900px) {
  .spot {
    grid-template-columns: 1.1fr 1fr;
  }
  .spot--flip .spot__media {
    order: 2;
  }
  .spot__media {
    min-height: 100%;
  }
  .spot__body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px;
  }
}

/* ---------- 15. Split media / text ---------- */
.split {
  display: grid;
  gap: 30px;
  align-items: center;
}
.split__media {
  display: flex;
  align-items: center;
  justify-content: center;
}
.split__media img {
  width: 100%;
}
.split__body {
  max-width: 560px;
}
@media (min-width: 1024px) {
  .split {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }
  .split--media-first .split__media {
    order: -1;
  }
}

/* ---------- 16. Process steps ---------- */
.steps {
  counter-reset: step;
  display: grid;
  gap: 24px;
}
.step {
  position: relative;
  padding-top: 22px;
  border-top: 2px solid var(--line);
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  margin-bottom: 12px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.step__h3 {
  font-size: 17px;
}
.step__p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}
@media (min-width: 700px) {
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 36px;
  }
}
@media (min-width: 1024px) {
  .steps--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .steps--5 {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

/* ---------- 17. Capability list rows ---------- */
.rows {
  border-top: 1px solid var(--line);
}
.row-i {
  display: grid;
  gap: 8px 30px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.row-i__h3 {
  font-size: 17px;
}
.row-i__p {
  color: var(--muted);
  font-size: 15px;
}
@media (min-width: 900px) {
  .row-i {
    grid-template-columns: 300px 1fr;
    align-items: start;
    padding: 28px 0;
  }
}

/* ---------- 18. Spec table ---------- */
.specs {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.specs caption {
  margin-bottom: 14px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 600;
  text-align: left;
}
.specs th,
.specs td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.specs tr:first-child th {
  border-top: 1px solid var(--line);
}
.specs th {
  width: 30%;
  background: var(--bg-2);
  color: var(--ink-soft);
  font-weight: 500;
}
.specs td {
  color: var(--text);
}
.specs__scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
/* 多列对照表：窄屏下横向滚动，避免列被压缩到不可读 */
.specs--wide {
  min-width: 860px;
}
.specs--wide th {
  width: 21%;
}

/* ---------- 产品详情页 ---------- */
.pd {
  display: grid;
  gap: 26px;
  align-items: start;
}
.pd__title {
  font-size: 26px;
  line-height: 1.28;
}
.pd__info > * + * {
  margin-top: 16px;
}
.pd__features {
  margin-top: 26px;
}
.pd__features .h4 {
  margin-bottom: 12px;
}
@media (min-width: 768px) {
  .pd__title {
    font-size: 32px;
  }
}
@media (min-width: 1024px) {
  .pd {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 56px;
  }
}

.gallery {
  display: grid;
  gap: 12px;
}
.gallery__main {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 3;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--bg-2);
  overflow: hidden;
}
.gallery__img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
}
.gallery__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.gallery__nav:hover {
  border-color: var(--ink);
}
.gallery__nav--prev {
  left: 10px;
}
.gallery__nav--next {
  right: 10px;
}
.gallery__thumbs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}
.gallery__thumb {
  flex: none;
  width: 78px;
  height: 62px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
  transition: border-color 0.18s var(--ease);
}
.gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
}
.gallery__thumb:hover {
  border-color: var(--line-2);
}
.gallery__thumb.is-on {
  border-color: var(--brand);
}

.spec-grid {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--line);
  overflow: hidden;
}
.spec-grid > div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 10px;
  padding: 12px 16px;
  background: #fff;
}
.spec-grid dt {
  color: var(--muted);
  font-size: 13px;
}
.spec-grid dd {
  margin: 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
}
@media (min-width: 700px) {
  .spec-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1100px) {
  .spec-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.ticks--cols {
  grid-template-columns: 1fr;
}
@media (min-width: 700px) {
  .ticks--cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 24px;
  }
}

/* ---------- 19. FAQ ---------- */
.faq {
  border-top: 1px solid var(--line);
}
.faq__i {
  border-bottom: 1px solid var(--line);
}
.faq__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.faq__q::-webkit-details-marker {
  display: none;
}
.faq__q::after {
  content: "";
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 8px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease);
}
.faq__i[open] .faq__q::after {
  transform: rotate(-135deg);
  margin-top: 12px;
}
.faq__a {
  max-width: 62em;
  padding: 0 0 22px;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- 20. CTA band ---------- */
.cta {
  position: relative;
  overflow: hidden;
  padding: 48px 0;
  background: var(--ink);
  color: #fff;
}
.cta__in {
  display: flex;
  flex-direction: column;
  gap: 26px;
}
.cta__h2 {
  max-width: 24em;
  color: #fff;
  font-size: 24px;
  line-height: 1.35;
}
.cta__p {
  max-width: 40em;
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
}
.cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.cta__meta {
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
}
@media (min-width: 900px) {
  .cta {
    padding: 64px 0;
  }
  .cta__in {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
  }
  .cta__text {
    flex: 1 1 auto;
  }
  .cta__actions {
    flex: none;
  }
  .cta__h2 {
    font-size: 28px;
  }
}

/* ---------- 21. Contact blocks ---------- */
.contact-grid {
  display: grid;
  gap: 20px;
}
@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: 1.05fr 1fr;
    gap: 48px;
    align-items: start;
  }
}
.info-list {
  display: grid;
  gap: 4px;
}
.info {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.info:first-child {
  border-top: 1px solid var(--line);
}
.info__ico {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: var(--brand-soft);
  color: var(--brand-ink);
}
.info__k {
  display: block;
  color: var(--muted);
  font-size: 12px;
}
.info__v {
  display: block;
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
}
.info__v a {
  color: inherit;
}
.info__v a:hover {
  color: var(--brand-ink);
}
.qr-row {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.qr {
  text-align: center;
}
.qr img {
  width: 104px;
  height: 104px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}
.qr span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

/* ---------- 22. Notice ---- */
.notice {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--signal);
  border-radius: var(--radius);
  background: var(--signal-soft);
  color: var(--ink-soft);
  font-size: 14px;
}

/* ---------- 23. Footer ---------- */
.ftr {
  padding: 48px 0 28px;
  background: #fff;
  border-top: 1px solid var(--line);
}
.ftr__top {
  display: grid;
  gap: 34px;
}
.ftr__brand {
  max-width: 340px;
}
.ftr__logo {
  width: 118px;
  height: 45px;
  object-fit: contain;
}
.ftr__desc {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}
.ftr__cols {
  display: grid;
  gap: 28px;
}
.ftr__h4 {
  margin-bottom: 14px;
  font-size: 14px;
}
.ftr__list {
  display: grid;
  gap: 9px;
}
.ftr__list a,
.ftr__list span {
  color: var(--muted);
  font-size: 14px;
}
.ftr__list a:hover {
  color: var(--ink);
}
.ftr__bottom {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  gap: 14px 32px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.ftr__bottom a {
  color: var(--muted);
}
.ftr__bottom a:hover {
  color: var(--ink);
}

/* 底栏左端：工商网监电子标识 + 版权与备案信息，与右端页脚导航同一行 */
.ftr__legal {
  display: flex;
  flex: 1 1 auto;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 14px;
  min-width: 0;
}
.ftr__gswj {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
  white-space: nowrap;
}
.ftr__gswj img {
  width: 26px;
  height: 26px;
  flex: none;
  object-fit: contain;
}
.ftr__gswj:hover {
  color: var(--ink);
}
.ftr__copy {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}
.ftr__copy a {
  color: var(--muted);
  white-space: nowrap;
}
.ftr__copy a:hover {
  color: var(--ink);
}
/* 底栏右端：页脚导航 */
.ftr__links {
  display: flex;
  flex: none;
  flex-wrap: wrap;
  gap: 4px 18px;
}
.ftr__links a {
  color: var(--muted);
  font-size: 13px;
}
.ftr__links a:hover {
  color: var(--ink);
}
@media (min-width: 768px) {
  .ftr__cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (min-width: 1024px) {
  .ftr__top {
    grid-template-columns: 1fr 1.4fr;
    gap: 60px;
  }
  .ftr__bottom {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ---------- 24. Reveal on scroll (progressive enhancement) ----------
   元素默认可见；仅在脚本确认其位于首屏之下时才加 .is-pending，
   并设有兜底定时器，确保任何情况下内容都不会永久隐藏。 */
.reveal.is-pending {
  opacity: 0;
  transform: translateY(14px);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal.is-pending,
  .reveal.is-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .sol:hover,
  .prod:hover {
    transform: none;
  }
}
/* 打印时始终显示内容，避免停在渐显的初始状态 */
@media print {
  .reveal,
  .reveal.is-pending {
    opacity: 1 !important;
    transform: none !important;
  }
  .hdr {
    position: static;
  }
  .cta,
  .hero--dark {
    color: #000;
  }
}

/* ---------- 25. Utilities ---------- */
.mt-0 { margin-top: 0; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-40 { margin-top: 40px; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}