:root {
  --blue: #1269ff;
  --blue-2: #2d80ff;
  --blue-3: #64a7ff;
  --navy: #001d3f;
  --deep: #00172f;
  --text: #101827;
  --muted: #5f6b7a;
  --line: #e7edf5;
  --panel: #ffffff;
  --soft: #f6f9fd;
  --focus: #6aa7ff;
  --shadow-soft: 0 10px 30px rgba(24, 42, 68, 0.08);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--soft);
  font-size: 15px;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
}

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

a,
button,
summary {
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(106, 167, 255, 0.5);
  outline-offset: 3px;
}

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

svg {
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.site-header {
  height: 55px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 0 62px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(10, 40, 80, 0.08);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #0c1523;
  font-size: 17px;
  font-weight: 800;
  white-space: nowrap;
}

.logo-mark {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(circle at 70% 28%, #fff 0 26%, transparent 27%),
    radial-gradient(circle at 75% 28%, var(--blue) 0 7%, transparent 8%),
    radial-gradient(circle at 67% 73%, var(--blue) 0 8%, transparent 9%),
    var(--blue);
  display: inline-block;
}

.main-nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 54px;
  flex: 1;
  font-weight: 700;
  font-size: 13px;
}

.main-nav a {
  height: 100%;
  display: flex;
  align-items: center;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover {
  color: var(--blue);
}

.main-nav .active {
  color: var(--blue);
  border-color: var(--blue);
}

.buy-button,
.hero-actions a,
.subscribe button {
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  font-weight: 800;
}

.buy-button {
  padding: 9px 20px;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 36px;
  box-shadow: 0 10px 22px rgba(18, 105, 255, 0.24);
}

.buy-button:hover,
.hero-actions .primary:hover,
.subscribe button:hover {
  background: #075de7;
  transform: translateY(-1px);
  box-shadow: 0 14px 26px rgba(18, 105, 255, 0.28);
}

.hero {
  background-color: #001933;
  background-image: url("assets/hero-home.jpg");
  background-position: center top;
  background-repeat: no-repeat;
  background-size: min(1180px, 94vw) auto;
  color: #fff;
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 17, 35, 0.45), rgba(0, 17, 35, 0.08) 46%, transparent 72%);
  pointer-events: none;
}

.hero-inner {
  max-width: 1254px;
  height: 373px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 47% 53%;
  align-items: center;
  padding-left: 62px;
  position: relative;
}

.hero-inner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 17% 18%, rgba(100, 167, 255, 0.72) 0 1px, transparent 2px),
    radial-gradient(circle at 48% 22%, rgba(100, 167, 255, 0.72) 0 1px, transparent 2px),
    linear-gradient(90deg, rgba(0, 20, 46, 0.22), transparent 70%);
  opacity: 0.7;
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 560px;
}

.hero h1 {
  margin: 0 0 22px;
  font-size: 36px;
  line-height: 1.25;
  font-weight: 900;
  text-shadow: 0 2px 18px rgba(0, 18, 45, 0.34);
}

.hero p {
  margin: 0;
  max-width: 455px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  line-height: 2;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 30px;
}

.hero-actions a {
  width: 95px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 24px rgba(18, 105, 255, 0.24);
}

.hero-actions .secondary {
  color: var(--blue);
  background: #fff;
  box-shadow: 0 10px 24px rgba(255, 255, 255, 0.15);
}

.hero-actions .secondary:hover {
  color: #075de7;
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(255, 255, 255, 0.2);
}

.hero-points {
  margin: 36px 0 0;
  padding: 0;
  display: flex;
  gap: 48px;
  list-style: none;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 700;
  font-size: 13px;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 9px;
  white-space: nowrap;
}

.hero-points span {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.13);
  color: #eaf3ff;
  font-size: 11px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.feature-strip,
.cards-grid,
.lower-grid {
  max-width: 1210px;
  margin-left: auto;
  margin-right: auto;
}

.feature-strip {
  transform: none;
  margin-top: 18px;
  margin-bottom: 10px;
  padding: 18px 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  background: #fff;
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

.feature-strip article {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  align-items: center;
  min-height: 76px;
}

.feature-icon {
  width: 50px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: #f1f5fb;
  color: var(--blue);
  font-size: 25px;
  font-weight: 900;
  box-shadow: inset 0 0 0 1px rgba(18, 105, 255, 0.04);
}

h2 {
  margin: 0;
  font-size: 18px;
  line-height: 1.35;
}

.feature-strip h2 {
  font-size: 14px;
  margin-bottom: 7px;
}

.feature-strip p,
.info-card p,
.faq-card p,
.site-footer p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.feature-strip p {
  font-size: 12px;
  font-weight: 600;
}

.news-home-section {
  display: block;
  padding: 22px 24px 24px;
}

.news-home-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.news-home-heading h2 {
  margin-top: 5px;
  font-size: 22px;
  color: var(--navy);
}

.news-home-heading a {
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.section-kicker {
  color: var(--blue);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 1.5px;
}

.news-home-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 16px;
}

.news-home-nav a {
  padding: 9px 14px;
  border-radius: 6px;
  background: var(--soft);
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.news-home-nav a.active,
.news-home-nav a:hover {
  background: rgba(18, 105, 255, 0.1);
  color: var(--blue);
}

.news-home-empty {
  margin-top: 18px !important;
  padding: 22px 0 2px;
  color: var(--muted);
  text-align: center;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.info-card,
.faq-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
  box-shadow: 0 6px 18px rgba(24, 42, 68, 0.05);
}

.feature-strip article,
.info-card,
.faq-card,
.scene {
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.info-card:hover,
.faq-card:hover,
.scene:hover {
  border-color: #d9e7f9;
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

.info-card {
  height: 278px;
  padding: 22px 24px 20px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px;
  gap: 16px;
  overflow: hidden;
}

#product {
  grid-template-columns: minmax(0, 1fr) 165px;
  gap: 10px;
}

.science-card {
  grid-template-columns: minmax(0, 1fr) 170px;
}

.science-page {
  min-height: calc(100vh - 55px);
  padding: 44px 28px 28px;
  color: #fff;
  background:
    radial-gradient(circle at 76% 8%, rgba(111, 186, 255, 0.2), transparent 26%),
    radial-gradient(circle at 16% 18%, rgba(73, 143, 255, 0.18), transparent 28%),
    rgb(5, 36, 87);
  overflow: hidden;
}

.science-problems,
.science-trust {
  max-width: 1210px;
  margin-left: auto;
  margin-right: auto;
}

.science-hero,
.science-data-panel {
  width: 100%;
  max-width: 1254px;
  margin-left: auto;
  margin-right: auto;
}

.science-hero {
  min-height: 385px;
  display: grid;
  grid-template-columns: 43% 57%;
  align-items: center;
  gap: 20px;
  position: relative;
}

.science-hero::before {
  content: "";
  position: absolute;
  inset: -26px 0 -34px;
  background:
    radial-gradient(circle at 24% 28%, rgba(255, 255, 255, 0.18) 0 1px, transparent 2px),
    radial-gradient(circle at 36% 18%, rgba(255, 255, 255, 0.16) 0 1px, transparent 2px),
    linear-gradient(90deg, #052457, #052457 76%, #052457);
  pointer-events: none;
}

.science-hero-copy,
.science-hero-visual {
  position: relative;
  z-index: 1;
}

.science-hero h1 {
  margin: 0 0 20px;
  font-size: 46px;
  line-height: 1.26;
  font-weight: 900;
  letter-spacing: 0;
  text-shadow: 0 3px 18px rgba(0, 19, 49, 0.3);
}

.science-hero h1 span {
  color: #ffd75c;
}

.science-hero-copy > p {
  margin: 0;
  font-size: 20px;
  line-height: 1.7;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.92);
}

.science-points {
  margin: 28px 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 86px);
  gap: 18px;
  list-style: none;
}

.science-points li {
  display: grid;
  justify-items: center;
  gap: 5px;
  text-align: center;
  color: #fff;
}

.science-points li::before {
  content: "";
  width: 70px;
  height: 70px;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 50%;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.04)),
    radial-gradient(circle at center, transparent 0 16px, rgba(255, 255, 255, 0.88) 17px 18px, transparent 19px);
  box-shadow: inset 0 0 18px rgba(255, 255, 255, 0.08);
}

.science-points strong,
.science-points small {
  display: block;
}

.science-points strong {
  font-size: 15px;
}

.science-points small {
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
  font-weight: 700;
}

.science-note {
  font-size: 12px !important;
  color: rgba(255, 255, 255, 0.74) !important;
}

.science-hero-visual {
  min-height: 385px;
  overflow: hidden;
  border-radius: 0 0 0 170px;
  background: transparent;
  box-shadow: none;
}

.science-hero-visual::before,
.science-hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.science-hero-visual::before {
  display: none;
}

.science-hero-visual::after {
  display: none;
}

.science-student {
  width: 100%;
  height: 385px;
  object-fit: cover;
  object-position: center top;
  border-radius: inherit;
  filter: saturate(0.86) contrast(1.02) brightness(0.66);
  opacity: 0.58;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, transparent 18%, rgba(0, 0, 0, 0.62) 48%, #000 100%);
  mask-image: linear-gradient(90deg, transparent 0, transparent 18%, rgba(0, 0, 0, 0.62) 48%, #000 100%);
}

.science-box {
  display: block;
  height: auto;
}

.science-box-hero {
  position: absolute;
  right: 38px;
  bottom: 14px;
  width: min(256px, 39%);
  z-index: 3;
  filter: drop-shadow(0 18px 24px rgba(0, 17, 49, 0.32));
}

.science-handwrite {
  position: absolute;
  z-index: 3;
  left: 108px;
  top: 42px;
  margin: 0;
  color: #fff;
  font-size: 24px;
  line-height: 1.45;
  transform: rotate(-8deg);
  text-shadow: 0 2px 12px rgba(0, 34, 80, 0.26);
}

.science-data-panel {
  position: relative;
  margin-top: 24px;
  padding: 18px 22px 18px;
  min-height: 338px;
  border: 1px solid rgba(88, 171, 245, 0.82);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(238, 248, 255, 0.98), rgba(220, 239, 253, 0.98)),
    linear-gradient(90deg, rgba(5, 36, 87, 0.08), rgba(5, 36, 87, 0));
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.62),
    inset 0 0 28px rgba(21, 112, 205, 0.08),
    0 14px 0 rgba(0, 63, 135, 0.2),
    0 20px 36px rgba(0, 14, 47, 0.34);
  color: #073168;
}

.science-data-panel::before {
  content: "";
  position: absolute;
  left: 14px;
  top: -1px;
  width: 425px;
  height: 34px;
  border-top: 1px solid rgba(116, 190, 255, 0.72);
  border-right: 1px solid rgba(116, 190, 255, 0.72);
  border-radius: 8px 24px 0 0;
  background: rgba(239, 249, 255, 0.98);
  transform: skewX(24deg);
  transform-origin: left top;
  pointer-events: none;
}

.science-panel-head h2,
.science-problems h2 {
  margin: 0;
  text-align: center;
  font-size: 28px;
  line-height: 1.25;
  color: #073168;
}

.science-panel-head {
  position: absolute;
  left: 32px;
  top: 38px;
  z-index: 1;
  width: 470px;
  margin: 0;
}

.science-panel-head h2 {
  text-align: left;
  font-size: 27px;
  line-height: 1.1;
  color: #063674;
}

.science-panel-head p {
  margin: 9px 0 0;
  color: #073168;
  font-size: 14px;
  line-height: 1.45;
  font-weight: 900;
}

.science-data-grid {
  display: grid;
  grid-template-columns: 1.28fr 0.8fr 0.96fr;
  gap: 12px;
  align-items: start;
  margin-top: 40px;
}

.science-table-card,
.science-brain-card {
  border: 1px solid #c7dced;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.72),
    0 10px 20px rgba(7, 49, 104, 0.14);
}

.science-table-card {
  margin-top: 92px;
  padding: 14px 18px 13px;
}

.science-brain-card {
  margin-top: 92px;
  padding: 14px 18px 12px;
}

.science-table-card h3,
.science-brain-card h3 {
  margin: 0 0 10px;
  color: #073168;
  line-height: 1.3;
  text-align: center;
}

.science-table-card h3 {
  font-size: 15px;
  font-weight: 900;
}

.science-brain-card h3 {
  font-size: 18px;
}

.science-table-card table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 6px;
  background: #fdfefe;
  color: #162f4e;
  font-size: 11px;
}

.science-table-card th,
.science-table-card td {
  padding: 5px 9px;
  border-bottom: 1px solid #dfeaf5;
  text-align: left;
}

.science-table-card th {
  color: #073168;
  background: #eef4fa;
  font-weight: 900;
}

.science-table-card p,
.science-brain-card p {
  margin: 10px 0 0;
  color: #183a5d;
  font-size: 12px;
  line-height: 1.55;
  font-weight: 800;
}

.science-metric-list {
  display: grid;
  gap: 12px;
  align-content: start;
  margin-top: 92px;
}

.science-metric-card {
  position: relative;
  min-height: 94px;
  padding: 17px 54px 14px 76px;
  border-radius: 8px;
  background:
    radial-gradient(circle at 12% 50%, rgba(255, 217, 91, 0.12), transparent 22%),
    linear-gradient(135deg, #003877, #0758a9 64%, #0b65bd);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.14),
    0 13px 20px rgba(0, 48, 110, 0.26);
  color: #fff;
}

.science-metric-card::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 50%;
  width: 44px;
  height: 44px;
  border: 2px solid #ffd75c;
  border-radius: 50%;
  transform: translateY(-50%);
  background:
    radial-gradient(circle at 62% 34%, #ffd75c 0 6px, transparent 7px),
    radial-gradient(circle at 54% 48%, transparent 0 14px, rgba(255, 215, 92, 0.22) 15px 18px, transparent 19px);
}

.science-metric-card::after {
  content: "↗";
  position: absolute;
  right: 18px;
  top: 22px;
  color: #ffd75c;
  font-size: 34px;
  line-height: 1;
  font-weight: 900;
}

.science-metric-card span {
  display: block;
  margin-bottom: 2px;
  color: #ffd75c;
  font-weight: 900;
  font-size: 14px;
}

.science-metric-card strong {
  display: inline-block;
  margin-right: 10px;
  color: #ffd75c;
  font-size: 31px;
  line-height: 1;
  font-weight: 900;
}

.science-metric-card small {
  margin-left: 4px;
  font-size: 14px;
}

.science-metric-card p {
  display: inline-block;
  margin: 0;
  font-size: 13px;
  line-height: 1.45;
  font-weight: 900;
  vertical-align: bottom;
}

.science-brain {
  display: grid;
  grid-template-columns: 0.72fr 1fr 0.72fr;
  align-items: center;
  gap: 8px;
}

.science-brain div {
  min-height: 84px;
  padding: 10px 8px;
  display: grid;
  align-content: center;
  border-radius: 999px;
  background: linear-gradient(180deg, #0a66bd, #0057aa);
  color: #fff;
  text-align: center;
  font-size: 12px;
  font-weight: 800;
}

.science-brain span {
  display: block;
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.35;
}

.science-brain img {
  width: 100%;
  max-width: 138px;
  height: auto;
  justify-self: center;
}

.science-yellow-btn {
  min-height: 40px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: linear-gradient(180deg, #ffe176, #ffc53c);
  color: #073168;
  font-weight: 900;
  box-shadow: 0 10px 18px rgba(184, 125, 0, 0.2);
}

.science-brain-card .science-yellow-btn {
  width: calc(100% - 28px);
  min-height: 32px;
  margin: 8px 14px 0;
}

.science-problems {
  margin-top: 24px;
  padding: 14px 12px 18px;
  border-radius: 8px;
  background: rgba(239, 248, 255, 0.98);
  box-shadow: 0 16px 30px rgba(0, 24, 70, 0.22);
}

.science-problems h2 {
  margin-bottom: 14px;
}

.science-problem-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr)) 1.15fr;
  gap: 10px;
}

.science-problem-card {
  overflow: hidden;
  border: 1px solid #d3e5f7;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 16px rgba(7, 49, 104, 0.1);
  text-align: center;
}

.science-problem-card img {
  width: 100%;
  height: 132px;
  object-fit: cover;
}

.science-problem-card h3 {
  margin: 10px 8px 4px;
  color: #063b80;
  font-size: 17px;
  line-height: 1.25;
}

.science-problem-card p {
  margin: 0 8px 12px;
  color: #345574;
  font-size: 13px;
  line-height: 1.5;
  font-weight: 700;
}

.science-cta-card {
  min-height: 100%;
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
  border-radius: 8px;
  background: linear-gradient(180deg, #004596, #00326f);
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.science-cta-card p {
  margin: 0;
  font-size: 20px;
  line-height: 1.55;
  font-weight: 900;
}

.science-trust {
  margin-top: 28px;
  min-height: 86px;
  padding: 14px 28px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 24px;
  align-items: center;
  border-radius: 8px;
  background: rgba(246, 251, 255, 0.98);
  color: #0a3974;
  box-shadow: 0 14px 28px rgba(0, 24, 70, 0.18);
}

.science-trust-items {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.science-trust article {
  min-height: 52px;
  padding: 2px 14px;
  display: grid;
  align-content: center;
  border-right: 1px solid #c9dff4;
}

.science-trust article:last-child {
  border-right: 0;
}

.science-trust strong,
.science-trust span {
  display: block;
}

.science-trust strong {
  font-size: 16px;
  line-height: 1.35;
}

.science-trust span {
  color: #496889;
  font-size: 14px;
  line-height: 1.5;
  font-weight: 700;
}

.science-trust .science-box {
  width: 220px;
  justify-self: end;
}

.guide-card {
  grid-template-columns: minmax(0, 1fr) 150px;
}

.info-card h2,
.faq-card h2 {
  margin-bottom: 10px;
}

.info-card p {
  font-size: 12px;
  font-weight: 600;
}

.info-card img {
  align-self: center;
  justify-self: end;
  max-width: none;
}

.info-card > img {
  width: 150px;
}

#product > img {
  width: 165px;
}

.science-card img {
  width: 178px;
  max-width: none;
  transform: translateX(4px);
}

.guide-card img {
  width: 150px;
  transform: none;
}

.check-list {
  margin: 14px 0 8px;
  padding: 0;
  list-style: none;
  color: #526070;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.9;
}

.check-list li::before {
  content: "✓";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  margin-right: 9px;
  border-radius: 50%;
  background: #d8e8ff;
  color: var(--blue);
  font-size: 10px;
}

.info-card a,
.faq-head a {
  color: var(--blue);
  font-weight: 800;
  font-size: 13px;
}

.info-card a:hover,
.faq-head a:hover,
.site-footer a:hover {
  color: var(--blue-2);
}

.steps {
  margin: 18px 0 12px;
  padding: 0;
  list-style: none;
  color: #526070;
  font-size: 12px;
  font-weight: 800;
  line-height: 2.85;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 10px;
  border-radius: 50%;
  background: #d8e8ff;
  color: var(--blue);
  font-size: 12px;
}

.steps {
  counter-reset: step;
}

.lower-grid {
  display: grid;
  grid-template-columns: 1.06fr 1fr;
  gap: 22px;
  margin-bottom: 20px;
}

.scene {
  margin: 0;
  border-radius: 7px;
  overflow: hidden;
  background: #0d1825;
}

.scene img {
  width: 100%;
  height: 208px;
  object-fit: cover;
}

.faq-card {
  padding: 18px 28px;
}

.faq-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

details {
  border: 1px solid var(--line);
  border-bottom: 0;
  background: #fff;
}

details:first-of-type {
  border-radius: 6px 6px 0 0;
}

details:last-of-type {
  border-bottom: 1px solid var(--line);
  border-radius: 0 0 6px 6px;
}

summary {
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  list-style: none;
  cursor: pointer;
  font-size: 12px;
  font-weight: 800;
}

summary:hover {
  color: var(--blue);
  background: #f7fbff;
}

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

summary::after {
  content: "+";
  color: #526174;
  font-size: 18px;
  font-weight: 400;
}

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

.faq-card details p {
  padding: 0 12px 10px;
  font-size: 12px;
}

.site-footer {
  background: radial-gradient(circle at 12% 20%, rgba(18, 105, 255, 0.14), transparent 24%),
    linear-gradient(100deg, #001b38, #00152c 55%, #001e42);
  color: rgba(255, 255, 255, 0.88);
  padding: 18px 54px 18px;
}

.footer-grid {
  max-width: 1148px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr 2.1fr;
  gap: 44px;
}

.footer-logo {
  color: #fff;
  margin-bottom: 8px;
}

.footer-brand p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

.subscribe p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

.site-footer section h2 {
  font-size: 14px;
  margin: 0 0 8px;
  color: #fff;
}

.site-footer section a {
  display: block;
  color: rgba(255, 255, 255, 0.66);
  font-size: 12px;
  line-height: 2;
}

.socials {
  display: flex;
  gap: 14px;
  margin-top: 12px;
}

.socials span {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  font-size: 10px;
}

.subscribe form {
  margin-top: 12px;
}

.subscribe button {
  border: 0;
  padding: 0 18px;
  min-height: 32px;
  cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.footer-bottom {
  max-width: 1148px;
  margin: 14px auto 0;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.58);
  font-size: 12px;
}

.footer-bottom a {
  margin: 0 16px;
}

.news-page {
  padding: 0 0 52px;
  background: #fff;
}

.news-hero {
  min-height: 205px;
  display: flex;
  align-items: center;
  background: linear-gradient(105deg, rgba(5, 59, 139, 0.98), rgba(9, 79, 165, 0.86)), url("assets/hero-main.jpg") center / cover;
  color: #fff;
}

.guide-center-hero {
  background: linear-gradient(105deg, rgba(5, 59, 139, 0.97), rgba(9, 79, 165, 0.82)), url("assets/bedside-product.png") center 48% / cover;
}

.product-center-hero {
  background: linear-gradient(105deg, rgba(5, 35, 82, 0.94), rgba(8, 67, 145, 0.7)), url("assets/hero-home.jpg") center 48% / cover;
}

.news-hero > div,
.news-breadcrumb,
.news-board {
  max-width: 1120px;
  margin: 0 auto;
}

.news-hero > div {
  width: 100%;
  padding: 34px 24px;
}

.news-hero span {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 2px;
  opacity: 0.72;
}

.news-hero h1 {
  margin: 9px 0 8px;
  font-size: 32px;
  line-height: 1.2;
}

.news-hero p {
  margin: 0;
  font-size: 14px;
  opacity: 0.84;
}

.news-breadcrumb {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 16px 24px;
  color: #8491a3;
  font-size: 12px;
}

.news-breadcrumb a { color: #64748b; }
.news-breadcrumb strong { color: #334155; }

.news-board {
  padding: 0 24px;
}

.news-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  min-height: 54px;
  border-bottom: 1px solid #e8edf3;
}

.news-nav a {
  position: relative;
  padding: 18px 0 15px;
  color: #3e4a59;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.news-nav a.active,
.news-nav a:hover { color: var(--blue); }

.news-nav a.active::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  background: var(--blue);
}

.product-category-nav button {
  position: relative;
  align-self: stretch;
  border: 0;
  padding: 0;
  color: #3e4a59;
  background: transparent;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
  cursor: pointer;
}

.product-category-nav button:hover,
.product-category-nav button.active {
  color: var(--blue);
}

.product-category-nav button.active::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  background: var(--blue);
}

.news-sort {
  margin-left: auto;
}

.news-sort select {
  min-width: 122px;
  height: 34px;
  border: 1px solid #dbe4ee;
  border-radius: 5px;
  padding: 0 10px;
  color: #344054;
  background: #fff;
  font: inherit;
  font-size: 12px;
}

.news-list { min-height: 280px; }

.news-item {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) 28px;
  gap: 22px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid #e8edf3;
}

.news-item img {
  width: 180px;
  height: 108px;
  border-radius: 4px;
  object-fit: cover;
  background: #edf3fa;
}

.news-item h2 {
  margin: 7px 0 7px;
  color: #182230;
  font-size: 18px;
}

.news-item h2 a:hover { color: var(--blue); }
.news-item p { margin: 0; color: #758195; font-size: 12px; line-height: 1.65; }

.news-tag {
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
}

.news-meta {
  display: flex;
  gap: 16px;
  margin-top: 10px;
  color: #8a96a6;
  font-size: 11px;
}

.news-more { color: #7b8796; }
.news-more svg { width: 19px; height: 19px; }

.news-empty {
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #8793a3;
  font-size: 13px;
}

.news-empty strong { color: #344054; font-size: 17px; }

.news-pagination {
  display: flex;
  justify-content: center;
  min-height: 46px;
  padding-top: 18px;
}

.news-pagination button {
  min-width: 72px;
  height: 30px;
  margin: 0 8px;
  border: 1px solid #dbe4ee;
  border-radius: 4px;
  color: #526070;
  background: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
}

.news-pagination button:disabled {
  color: #b5bec9;
  cursor: default;
}

.news-pagination span {
  color: #758195;
  font-size: 12px;
  line-height: 30px;
}

.product-content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  align-items: start;
}

.product-article-column,
.product-support-grid {
  min-width: 0;
}

.product-support-grid {
  display: grid;
  gap: 18px;
  padding-top: 18px;
}

.product-support-grid .side-card {
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .site-header {
    height: auto;
    padding: 14px 20px;
    flex-wrap: wrap;
  }

  .main-nav {
    order: 3;
    flex: 0 0 100%;
    width: 100%;
    max-width: 100%;
    justify-content: flex-start;
    gap: 22px;
    overflow-x: auto;
    padding-top: 8px;
  }

  .main-nav a {
    height: 30px;
  }

  .hero-inner {
    min-height: 410px;
    grid-template-columns: 1fr;
    padding: 44px 22px 32px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero-points {
    flex-wrap: wrap;
    gap: 18px;
  }

  .feature-strip,
  .cards-grid,
  .lower-grid,
  .footer-grid {
    width: calc(100% - 32px);
  }

  .feature-strip,
  .cards-grid,
  .lower-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .feature-strip {
    transform: none;
    margin-top: 16px;
  }

  .news-hero {
    min-height: 170px;
  }

  .news-hero > div,
  .news-breadcrumb,
  .news-board {
    padding-right: 16px;
    padding-left: 16px;
  }

  .news-hero h1 {
    font-size: 28px;
  }

  .news-nav {
    gap: 18px;
    overflow-x: auto;
  }

  .product-category-nav button {
    min-height: 54px;
  }

  .news-sort {
    display: none;
  }

  .news-item {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 14px;
  }

  .news-item img {
    width: 112px;
    height: 82px;
  }

  .news-item h2 {
    font-size: 15px;
  }

  .news-item p {
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .news-more {
    display: none;
  }

  .product-content-layout {
    grid-template-columns: 1fr;
  }

  .product-support-grid {
    padding-top: 0;
  }

  .info-card {
    grid-template-columns: 1fr 120px;
    height: auto;
    min-height: 235px;
  }

  .science-card,
  .guide-card {
    grid-template-columns: 1fr 112px;
  }

  .guide-card img {
    width: 112px;
  }

  .site-footer {
    padding: 26px 0;
  }

  .footer-grid {
    width: 100%;
    max-width: none;
    grid-template-columns: 220px 130px 130px 130px 240px;
    gap: 24px;
    overflow-x: auto;
    padding: 0 16px 14px;
    scrollbar-width: thin;
  }

  .footer-grid > section {
    min-width: 0;
  }

  .footer-bottom {
    width: calc(100% - 32px);
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

.product-page {
  background:
    radial-gradient(circle at 18% 10%, rgba(18, 105, 255, 0.08), transparent 28%),
    linear-gradient(180deg, #f6f9ff 0, #f8fbff 220px, #fff 100%);
  min-height: calc(100vh - 55px);
  padding: 28px clamp(18px, 2.2vw, 28px) 36px;
}

.breadcrumb {
  display: flex;
  gap: 10px;
  align-items: center;
  color: #667085;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 30px;
}

.admin-title h1 {
  margin: 0 0 10px;
  color: #081426;
  font-size: 34px;
  line-height: 1.2;
}

.admin-title p {
  margin: 0;
  color: #526070;
  font-weight: 700;
}

.publish-link {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 6px;
  padding: 0 18px;
  background: var(--blue);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 12px 22px rgba(18, 105, 255, 0.22);
  cursor: pointer;
}

.admin-help-link {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 20;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 22px;
  font-weight: 900;
  box-shadow: 0 14px 28px rgba(18, 105, 255, 0.28);
}

.admin-help-link:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 34px rgba(18, 105, 255, 0.34);
}

.product-layout {
  max-width: 1210px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 302px;
  gap: 18px;
  align-items: start;
}

.product-layout > *,
.product-left,
.product-right,
.article-center {
  min-width: 0;
}

.side-card,
.article-center,
.admin-panel {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid #e9eff8;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(24, 42, 68, 0.06);
}

.side-card {
  padding: 18px;
  margin-bottom: 18px;
}

.side-card h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 17px;
}

.category-btn {
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 0;
  border-radius: 8px;
  padding: 0 10px;
  background: transparent;
  color: #344054;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
}

.category-btn.active,
.category-btn:hover {
  color: var(--blue);
  background: #eef5ff;
}

.help-card {
  display: grid;
  grid-template-columns: 38px 1fr 18px;
  gap: 10px;
  align-items: center;
}

.help-card::before {
  content: "";
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #eef5ff;
}

.help-card strong,
.help-card span {
  grid-column: 2;
}

.help-card span {
  color: #667085;
  font-size: 12px;
}

.help-card a {
  grid-column: 3;
  grid-row: 1 / span 2;
  color: var(--blue);
  font-weight: 900;
}

.article-center {
  padding: 20px;
}

.article-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 44px 132px;
  gap: 12px;
  margin-bottom: 16px;
}

.product-page .article-toolbar {
  display: flex;
  justify-content: flex-end;
  flex: 0 0 auto;
  margin-bottom: 0;
}

.product-page .article-toolbar select {
  width: auto;
  min-width: 122px;
}

.product-hero {
  margin-bottom: 0;
}

.product-filter-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.product-filter-row .chip-row {
  flex: 1 1 auto;
  min-width: 0;
  margin-bottom: 0;
}

.search-box {
  position: relative;
}

.search-box input,
.article-toolbar select,
.admin-panel input,
.admin-panel textarea,
.admin-panel select {
  width: 100%;
  min-height: 42px;
  border: 1px solid #dbe5f1;
  border-radius: 7px;
  padding: 0 12px;
  color: #263244;
  background: #fff;
  font: inherit;
  font-weight: 700;
}

.search-box input {
  padding-right: 42px;
}

.search-box svg {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: #8b9aae;
}

.filter-button {
  border: 0;
  border-radius: 7px;
  background: #eef5ff;
  color: #48617e;
  cursor: pointer;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.chip {
  min-height: 32px;
  border: 0;
  border-radius: 999px;
  padding: 0 16px;
  background: #f1f5fb;
  color: #526070;
  font-weight: 800;
  cursor: pointer;
}

.chip.active,
.chip:hover {
  background: #eef5ff;
  color: var(--blue);
  box-shadow: inset 0 0 0 1px var(--blue);
}

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

.article-card {
  min-height: 164px;
  display: grid;
  grid-template-columns: 196px minmax(0, 1fr) 24px;
  gap: 24px;
  align-items: center;
  padding: 18px;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(24, 42, 68, 0.05);
}

.article-card img {
  width: 196px;
  height: 138px;
  border-radius: 7px;
  object-fit: cover;
  background: #f3f6fa;
}

.article-card h2 {
  margin-bottom: 11px;
  font-size: 20px;
  line-height: 1.38;
}

.article-card h2 a,
.hot-item h3 a {
  color: inherit;
}

.article-card h2 a:hover,
.hot-item h3 a:hover {
  color: var(--blue);
}

.article-card p {
  margin: 0 0 15px;
  color: #526070;
  font-weight: 700;
  line-height: 1.65;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  margin-right: 14px;
  border-radius: 6px;
  padding: 0 9px;
  color: var(--blue);
  background: #eaf3ff;
  font-size: 12px;
  font-weight: 900;
}

.tag.green { color: #149765; background: #e7f8f0; }
.tag.orange { color: #d76c15; background: #fff0e3; }
.tag.purple { color: #7a4bf0; background: #f0eaff; }

.article-card time,
.article-card span:not(.tag) {
  margin-right: 14px;
  color: #64748b;
  font-size: 12px;
  font-weight: 800;
}

.article-save {
  color: #667085;
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  justify-content: center;
  margin-top: 16px;
}

.pagination button,
.pagination select {
  min-width: 32px;
  height: 32px;
  border: 1px solid #dbe5f1;
  border-radius: 6px;
  background: #fff;
  color: #526070;
  font-weight: 800;
}

.pagination button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.pagination .active {
  color: var(--blue);
  border-color: var(--blue);
}

.page-ellipsis {
  color: #64748b;
  font-weight: 800;
}

.hot-list {
  display: grid;
  gap: 16px;
}

.hot-item {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 12px;
  align-items: center;
}

.hot-item img {
  width: 78px;
  height: 78px;
  border-radius: 7px;
  object-fit: cover;
}

.hot-item h3 {
  margin: 0 0 9px;
  font-size: 14px;
  line-height: 1.45;
}

.hot-item span,
.quick-grid small {
  color: #667085;
  font-size: 12px;
  font-weight: 700;
}

.more-link,
.quick-link {
  display: inline-flex;
  margin-top: 16px;
  color: var(--blue);
  font-weight: 900;
  font-size: 13px;
}

.quick-card > img {
  width: 100%;
  height: 94px;
  border-radius: 7px;
  object-fit: cover;
  margin-bottom: 16px;
}

.quick-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 16px;
  color: #243043;
  font-size: 13px;
  font-weight: 900;
}

.faq-mini a {
  display: flex;
  justify-content: space-between;
  min-height: 38px;
  color: #344054;
  font-size: 13px;
  font-weight: 800;
}

.faq-mini a::after {
  content: "›";
  color: #667085;
}

.faq-mini .more-link::after {
  content: "";
}

.article-page {
  min-height: calc(100vh - 55px);
  padding: 32px clamp(18px, 4vw, 40px) 44px;
  background:
    radial-gradient(circle at 20% 6%, rgba(18, 105, 255, 0.08), transparent 28%),
    linear-gradient(180deg, #f6f9ff 0, #fff 260px);
}

.article-breadcrumb,
.article-shell {
  max-width: 1210px;
  margin: 0 auto;
}

.article-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  align-items: center;
  margin-bottom: 16px;
  color: #667085;
  font-size: 13px;
  font-weight: 800;
}

.article-breadcrumb strong {
  color: #081426;
  font-size: 15px;
}

.article-breadcrumb a {
  color: #344054;
}

.article-breadcrumb a:hover {
  color: var(--blue);
}

.article-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 302px;
  gap: 18px;
  align-items: start;
}

.article-detail {
  padding: 30px;
  border: 1px solid #e9eff8;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 30px rgba(24, 42, 68, 0.06);
}

.article-detail h1 {
  margin: 14px 0 14px;
  color: #081426;
  font-size: 34px;
  line-height: 1.24;
}

.article-detail header p {
  margin: 0;
  color: #526070;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.7;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 16px;
  color: #64748b;
  font-size: 13px;
  font-weight: 800;
}

.article-content {
  color: #555;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 17px;
  font-weight: 400;
  line-height: 1.9;
}

.article-content p {
  margin: 0 0 18px;
}

.article-content table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  border: 1px solid #cfd8e3;
}

.article-content th,
.article-content td {
  padding: 9px 12px;
  border: 1px solid #cfd8e3;
  text-align: left;
  vertical-align: top;
}

.article-content th {
  background: #f5f8fc;
  font-weight: 900;
}

.faq-detail {
  max-width: 900px;
  margin: 0 auto;
}

.faq-page {
  min-height: calc(100vh - 55px);
  padding: 30px clamp(18px, 4vw, 40px) 44px;
  background:
    radial-gradient(circle at 18% 10%, rgba(18, 105, 255, 0.1), transparent 26%),
    linear-gradient(180deg, #f6f9ff 0, #fff 260px);
}

.faq-hero,
.faq-page-shell {
  max-width: 1210px;
  margin: 0 auto;
}

.faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 18px;
  align-items: stretch;
  margin-bottom: 18px;
}

.faq-hero-copy,
.faq-hero-card {
  border: 1px solid #e9eff8;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 14px 34px rgba(24, 42, 68, 0.08);
}

.faq-hero-copy {
  padding: 28px 30px 26px;
  display: grid;
  align-content: center;
}

.faq-hero-copy .tag {
  width: fit-content;
  margin-bottom: 14px;
}

.faq-hero-copy h1 {
  margin: 0 0 12px;
  color: #081426;
  font-size: 38px;
  line-height: 1.18;
}

.faq-hero-copy p {
  margin: 0;
  max-width: 620px;
  color: #526070;
  font-size: 16px;
  line-height: 1.8;
  font-weight: 700;
}

.faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.faq-hero-card {
  padding: 22px 22px 20px;
  background:
    linear-gradient(180deg, #f7fbff, #fff),
    radial-gradient(circle at 82% 18%, rgba(18, 105, 255, 0.08), transparent 28%);
}

.faq-hero-card strong {
  display: block;
  margin-bottom: 12px;
  color: #081426;
  font-size: 18px;
}

.faq-hero-card p {
  margin: 0;
  color: #526070;
  font-size: 14px;
  line-height: 1.8;
  font-weight: 700;
}

.faq-hero-card ul {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  color: #344054;
  font-size: 13px;
  line-height: 2;
  font-weight: 800;
}

.faq-hero-card li::before {
  content: "•";
  margin-right: 8px;
  color: var(--blue);
}

.faq-page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 302px;
  gap: 18px;
  align-items: start;
}

.faq-page-detail {
  max-width: none;
  margin: 0;
}

.faq-page-head {
  display: grid;
  gap: 10px;
  margin-bottom: 22px;
}

.faq-page-head h2 {
  margin: 0;
  color: #081426;
  font-size: 28px;
  line-height: 1.25;
}

.faq-page-head p {
  margin: 0;
  color: #667085;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.7;
}

.faq-page-head code {
  color: var(--blue);
  font-weight: 900;
}

.faq-full-list details {
  border: 1px solid #e4ebf4;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(24, 42, 68, 0.04);
}

.faq-full-list summary {
  padding: 18px 20px;
  color: #081426;
  font-size: 16px;
  font-weight: 900;
}

.faq-full-list p {
  margin: 0;
  padding: 0 20px 18px;
  color: #526070;
  font-size: 14px;
  line-height: 1.8;
  font-weight: 700;
}

.faq-detail-link {
  display: inline-flex;
  margin: 0 20px 18px;
  color: var(--blue);
  font-weight: 900;
  font-size: 13px;
}

.faq-page-aside {
  display: grid;
  gap: 18px;
}

.faq-page-aside .side-card {
  margin-bottom: 0;
}

.faq-page-aside .related-item {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid #eef3f9;
}

.faq-page-aside .related-item:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.faq-page-aside .related-item strong {
  color: #081426;
}

.faq-page-aside .related-item span {
  color: #667085;
}

.faq-full-list {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.related-card {
  position: sticky;
  top: 75px;
  padding: 20px;
  border: 1px solid #e9eff8;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 30px rgba(24, 42, 68, 0.06);
}

.related-card h2 {
  margin: 0 0 16px;
  color: #081426;
  font-size: 18px;
}

.related-item {
  display: grid;
  gap: 8px;
  padding: 14px 0;
  border-top: 1px solid #eef3f9;
  color: #263244;
}

.related-item strong {
  font-size: 14px;
  line-height: 1.45;
}

.related-item span,
.related-empty {
  color: #667085;
  font-size: 12px;
  font-weight: 800;
}

.related-item:hover strong {
  color: var(--blue);
}

.admin-header .main-nav {
  justify-content: flex-start;
}

.admin-ghost {
  min-height: 36px;
  border: 1px solid #dbe5f1;
  border-radius: 6px;
  padding: 0 14px;
  background: #fff;
  color: #344054;
  font-weight: 800;
  cursor: pointer;
}

.admin-page {
  min-height: calc(100vh - 55px);
  padding: 32px 28px;
  background: #f6f9fd;
}

#adminGate.admin-gate {
  max-width: 420px;
  margin: 70px auto 0;
  padding: 46px 38px 44px;
  text-align: center;
}

#adminGate.admin-gate h1 {
  margin: 0 0 46px;
  color: #081426;
  font-size: 28px;
}

#adminGate.admin-gate p {
  margin: 0 0 28px;
  color: #667085;
  font-weight: 700;
}

#adminGate.admin-gate form label {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  color: #344054;
  font-weight: 900;
}

#adminGate.admin-gate .login-label {
  white-space: nowrap;
  text-align: right;
}

#adminGate.admin-gate input {
  min-height: 46px;
  border-radius: 8px;
  text-align: left;
  box-shadow: inset 0 1px 2px rgba(24, 42, 68, 0.04);
}

#adminGate.admin-gate .publish-link {
  min-width: 132px;
  min-height: 42px;
  margin: 0 auto;
}

.admin-title,
.admin-layout {
  max-width: 1210px;
  margin: 0 auto;
}

.admin-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 22px;
  min-height: 178px;
  padding: 34px 38px;
  border: 1px solid #e9eff8;
  border-radius: 8px;
  background:
    linear-gradient(95deg, rgba(255, 255, 255, 0.98) 0 58%, rgba(235, 243, 255, 0.9) 100%),
    radial-gradient(circle at 84% 24%, rgba(18, 105, 255, 0.22), transparent 30%),
    radial-gradient(circle at 95% 80%, rgba(100, 167, 255, 0.16), transparent 26%);
  box-shadow: 0 18px 46px rgba(24, 42, 68, 0.09);
  animation: adminFadeIn 420ms ease both;
}

.admin-title h1 {
  margin: 0 0 14px;
  color: #06152b;
  font-size: 42px;
  line-height: 1.16;
  letter-spacing: 0;
}

.admin-title p {
  max-width: 720px;
  color: #526070;
  font-size: 16px;
  line-height: 1.7;
}

.admin-hero-cta {
  min-width: 138px;
  min-height: 46px;
  box-shadow: 0 16px 30px rgba(18, 105, 255, 0.28), 0 0 0 6px rgba(18, 105, 255, 0.08);
}

.admin-hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

.admin-hero-ghost {
  min-width: 122px;
  min-height: 46px;
  border-color: rgba(18, 105, 255, 0.28);
  color: var(--blue);
  box-shadow: 0 12px 24px rgba(24, 42, 68, 0.07);
}

@keyframes adminFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.admin-note {
  margin-top: 8px !important;
  color: #667085 !important;
  font-size: 13px;
}

.admin-note code {
  color: var(--blue);
  font-weight: 900;
}

.admin-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 22px;
}

.admin-nav-panel {
  position: sticky;
  top: 75px;
  display: grid;
  gap: 16px;
  align-self: start;
  padding: 20px;
  border: 1px solid #e9eff8;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 16px 38px rgba(24, 42, 68, 0.08);
  animation: adminFadeIn 520ms ease both;
}

.admin-nav-btn {
  min-height: 62px;
  border: 0;
  border-radius: 8px;
  padding: 0 20px;
  background: transparent;
  color: #344054;
  font-size: 16px;
  font-weight: 900;
  text-align: left;
  cursor: pointer;
}

.admin-nav-btn.active,
.admin-nav-btn:hover {
  color: var(--blue);
  background: linear-gradient(90deg, #eef5ff, #f7fbff);
  box-shadow: inset 3px 0 0 var(--blue);
}

.admin-content {
  min-width: 0;
}

.admin-editor {
  max-width: 1210px;
  margin: 0 auto;
}

.admin-side-stack {
  display: grid;
  gap: 18px;
}

.admin-panel {
  padding: 18px;
}

.admin-panel label {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
  color: #344054;
  font-weight: 900;
}

.admin-panel textarea {
  padding-top: 10px;
  resize: vertical;
}

.rich-content-value {
  display: none !important;
}

.rich-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
  padding: 7px 8px;
  border: 1px solid #d5deeb;
  border-bottom: 0;
  border-radius: 7px 7px 0 0;
  background: #f8fafc;
}

.rich-toolbar .toolbar-color,
.rich-toolbar select {
  flex: 0 0 auto;
  min-width: 0;
  box-sizing: border-box;
  font-size: 13px;
}

.rich-toolbar .toolbar-color {
  width: 118px;
  height: 32px;
  justify-content: center;
  white-space: nowrap;
}

.rich-toolbar button,
.rich-toolbar select {
  min-height: 32px;
  border: 1px solid #d5deeb;
  border-radius: 5px;
  background: #fff;
  color: #26334d;
  cursor: pointer;
}

.rich-toolbar button {
  width: 34px;
  padding: 0;
  font-size: 16px;
}

.rich-toolbar select {
  height: 32px;
  padding: 0 8px;
}

.rich-toolbar select[data-command="fontName"] {
  width: 120px;
}

.rich-toolbar select[data-command="fontSize"] {
  width: 86px;
}

.toolbar-color {
  display: flex;
  align-items: center;
  gap: 5px;
  min-height: 32px;
  padding: 0 6px;
  border: 1px solid #d5deeb;
  border-radius: 5px;
  background: #fff;
  color: #475467;
  font-size: 13px;
  cursor: pointer;
}

.toolbar-color input {
  display: block;
  flex: 0 0 18px;
  width: 18px;
  max-width: 18px;
  height: 10px;
  min-height: 10px;
  box-sizing: border-box;
  padding: 0;
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
}

.toolbar-color input::-webkit-color-swatch-wrapper {
  padding: 0;
}

.toolbar-color input::-webkit-color-swatch {
  border: 0;
  border-radius: 3px;
}

.toolbar-color input::-moz-color-swatch {
  border: 0;
  border-radius: 3px;
}

.rich-content-editor {
  height: 420px;
  min-height: 240px;
  max-height: calc(100vh - 300px);
  overflow-y: auto;
  overscroll-behavior-y: contain;
  scrollbar-gutter: stable;
  border: 1px solid #d5deeb;
  border-radius: 0 0 7px 7px;
  padding: 14px;
  color: #555;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-weight: 400;
  background: #fff;
  line-height: 1.75;
}

.rich-content-editor:empty::before {
  content: attr(data-placeholder);
  color: #98a2b3;
  pointer-events: none;
}

.rich-content-editor:focus {
  outline: 2px solid rgba(38, 120, 239, .18);
  border-color: #2678ef;
}

.rich-content-editor img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 12px 0;
  border-radius: 6px;
}

.rich-content-editor table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid #cfd8e3;
}

.rich-content-editor th,
.rich-content-editor td {
  min-width: 80px;
  padding: 8px 10px;
  border: 1px solid #cfd8e3;
}

.admin-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.admin-check {
  display: flex !important;
  grid-template-columns: none !important;
  align-items: center;
  gap: 10px !important;
}

.admin-check input {
  width: 18px;
  min-height: 18px;
}

.admin-upload {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 96px;
  gap: 12px;
  align-items: end;
  margin-bottom: 14px;
}

.admin-upload label {
  margin-bottom: 0;
}

.admin-status {
  min-height: 20px;
  margin: 12px 0 0;
  color: #667085;
  font-size: 13px;
  font-weight: 800;
}

.admin-status[data-type="ok"] {
  color: #149765;
}

.admin-status[data-type="error"] {
  color: #d92d20;
}

.admin-actions,
.admin-list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.admin-head-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-panel-count {
  display: flex;
  justify-content: center;
  margin-top: 18px;
  color: #667085;
  font-size: 13px;
  font-weight: 900;
}

.admin-list {
  display: grid;
  gap: 12px;
}

.admin-item {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) auto auto auto;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border: 1px solid #e9eff8;
  border-radius: 8px;
}

.admin-item.compact {
  grid-template-columns: minmax(0, 1fr) auto auto;
}

.user-account-item {
  grid-template-columns: minmax(0, 1fr) auto;
}

.user-account-main {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-width: 0;
}

.user-account-main h3,
.user-account-main p {
  margin: 0;
}

.user-account-main p {
  white-space: nowrap;
}

.user-account-actions {
  display: flex;
  gap: 8px;
  white-space: nowrap;
}

.admin-item img {
  width: 76px;
  height: 58px;
  border-radius: 6px;
  object-fit: cover;
}

.admin-item h3 {
  margin: 0 0 6px;
  font-size: 14px;
}

.admin-item p {
  margin: 0;
  color: #667085;
  font-size: 12px;
  font-weight: 700;
}

.admin-item button {
  min-height: 32px;
  border: 0;
  border-radius: 6px;
  padding: 0 10px;
  background: #eef5ff;
  color: var(--blue);
  font-weight: 900;
  cursor: pointer;
}

.admin-list.compact {
  gap: 10px;
}

.admin-inline-form {
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid #e9eff8;
}

.admin-header-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.admin-inline-form fieldset {
  margin: 14px 0;
  padding: 12px;
  border: 1px solid #e9eff8;
  border-radius: 6px;
}

.admin-permission-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.admin-permission-grid > label {
  display: grid;
  gap: 7px;
  color: #344054;
  font-weight: 800;
}

.admin-permission-grid > label > span {
  display: grid;
  gap: 5px;
  font-size: 12px;
  font-weight: 700;
}

.admin-permission-grid input {
  width: auto;
  margin-right: 4px;
}

.user-management-panel {
  padding: 28px;
}

.user-management-heading,
.user-management-title,
.user-section-heading,
.user-form-actions,
.user-list-toolbar {
  display: flex;
  align-items: center;
}

.user-management-heading {
  justify-content: space-between;
  margin-bottom: 24px;
}

.user-list-toolbar {
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e9eff8;
}

.user-list-toolbar h3 {
  margin: 0;
  color: #16233d;
}

.user-list-toolbar p {
  margin: 5px 0 0;
  color: #7a879d;
  font-size: 13px;
}

.user-management-title {
  gap: 14px;
}

.user-management-icon {
  position: relative;
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, #2f80ed, #1464d2);
  color: #fff;
  font-size: 27px;
  box-shadow: 0 8px 18px rgba(47, 128, 237, .22);
}

.user-management-icon::before {
  content: "";
  position: absolute;
  top: 13px;
  width: 10px;
  height: 10px;
  border: 2px solid #fff;
  border-radius: 50%;
}

.user-management-icon::after {
  content: "";
  position: absolute;
  bottom: 11px;
  width: 22px;
  height: 11px;
  border: 2px solid #fff;
  border-bottom: 0;
  border-radius: 14px 14px 0 0;
}

.user-management-title h2,
.user-form-section h3,
.user-account-list h3 {
  margin: 0;
  color: #16233d;
}

.user-management-title p,
.user-section-heading p {
  margin: 4px 0 0;
  color: #7a879d;
  font-size: 13px;
}

.user-form {
  margin: 0;
  padding: 0;
  border: 0;
}

.user-form-section,
.user-account-list {
  margin-top: 18px;
  padding: 20px;
  border: 1px solid #dfe7f3;
  border-radius: 8px;
  background: #fff;
}

.user-form-section h3 {
  padding-left: 12px;
  border-left: 4px solid #2678ef;
}

.user-basic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 22px;
  margin-top: 20px;
}

.user-basic-grid label {
  display: grid;
  gap: 8px;
  color: #344054;
  font-size: 13px;
  font-weight: 800;
}

.user-basic-grid label > span {
  display: block;
}

.user-basic-grid em {
  color: #e5484d;
  font-style: normal;
}

.user-basic-grid input,
.user-basic-grid select {
  min-height: 44px;
  border: 1px solid #d5deeb;
  border-radius: 7px;
  padding: 0 13px;
  color: #26334d;
  background: #fff;
}

.user-section-heading {
  gap: 16px;
  margin-bottom: 16px;
}

.permission-table {
  display: grid;
  grid-template-columns: 180px repeat(4, minmax(210px, 1fr));
  min-width: 1020px;
  overflow: hidden;
  border: 1px solid #dfe7f3;
  border-radius: 7px;
}

.user-permission-section {
  overflow-x: auto;
}

.permission-cell {
  min-height: 54px;
  display: grid;
  place-items: center;
  border-right: 1px solid #dfe7f3;
  border-bottom: 1px solid #dfe7f3;
  color: #27364f;
  font-size: 14px;
}

.user-management-panel .permission-table .permission-cell {
  margin: 0;
  gap: 0;
}

.user-management-panel .permission-table .permission-check {
  display: grid;
  align-items: center;
  justify-items: center;
  padding: 0;
}

.permission-cell:nth-child(5n) { border-right: 0; }
.permission-table > :nth-last-child(-n + 5) { border-bottom: 0; }
.permission-head { background: #f8faff; font-weight: 900; white-space: nowrap; }
.permission-action { justify-items: start; padding-left: 18px; font-weight: 800; }
.permission-check input { width: 19px; height: 19px; accent-color: #2678ef; }

.user-form-actions {
  gap: 14px;
  margin-top: 20px;
}

.user-form-actions .admin-status { margin-left: 4px; }

.user-form-actions .admin-danger {
  margin-left: auto;
  min-height: 42px;
  border: 1px solid #f97068;
  border-radius: 7px;
  padding: 0 18px;
  color: #d92d20;
  background: #fff;
  font-weight: 900;
  cursor: pointer;
}

.user-form-actions .admin-danger:hover {
  background: #fff1f0;
}

.user-account-list > h3 { margin-bottom: 14px; }

.admin-empty {
  margin: 0;
  color: #667085;
  font-size: 13px;
  font-weight: 800;
}

@media (max-width: 1100px) {
  .science-hero,
  .science-data-grid,
  .science-panel-head,
  .science-trust {
    grid-template-columns: 1fr;
  }

  .faq-hero,
  .faq-page-shell {
    grid-template-columns: 1fr;
  }

  .science-problem-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .science-cta-card {
    grid-column: 1 / -1;
    min-height: 160px;
  }

  .science-trust-items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .science-trust .science-box {
    justify-self: center;
  }

  .product-layout {
    grid-template-columns: 1fr;
  }

  .article-shell {
    grid-template-columns: 1fr;
  }

  .related-card {
    position: static;
  }

  .product-left,
  .product-right {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .side-card {
    margin-bottom: 0;
  }

  .admin-layout {
    grid-template-columns: 1fr;
  }

  .user-account-item {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .admin-nav-panel {
    position: static;
    grid-template-columns: repeat(3, 1fr);
  }

  .admin-nav-btn {
    text-align: center;
  }
}

@media (max-width: 720px) {
  .user-management-panel {
    padding: 18px 14px;
  }

  .user-management-heading {
    align-items: flex-start;
  }

  .user-management-title {
    align-items: flex-start;
  }

  .user-management-icon {
    width: 44px;
    height: 44px;
    font-size: 22px;
  }

  .user-basic-grid {
    grid-template-columns: 1fr;
  }

  .user-form-actions {
    flex-wrap: wrap;
  }

  .faq-page {
    padding: 22px 14px 28px;
  }

  .faq-hero-copy,
  .faq-hero-card,
  .article-detail.faq-page-detail {
    padding: 20px 18px;
  }

  .faq-hero-copy h1 {
    font-size: 30px;
  }

  .faq-page-head h2 {
    font-size: 24px;
  }

  .faq-full-list summary {
    font-size: 15px;
    padding: 16px 16px 14px;
  }

  .faq-full-list p {
    padding: 0 16px 16px;
  }

  .science-page {
    padding: 26px 14px 22px;
  }

  .science-hero {
    min-height: 0;
    gap: 18px;
  }

  .science-hero::before {
    inset: -24px -18px;
  }

  .science-hero h1 {
    font-size: 34px;
  }

  .science-hero-copy > p {
    font-size: 17px;
  }

  .science-points {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 10px;
  }

  .science-points li::before {
    width: 62px;
    height: 62px;
  }

  .science-hero-visual {
    min-height: 300px;
  }

  .science-student {
    height: 300px;
    border-radius: 8px;
    -webkit-mask-image: none;
    mask-image: none;
  }

  .science-handwrite {
    left: 18px;
    top: 18px;
    font-size: 18px;
  }

  .science-box-hero {
    right: 12px;
    bottom: 12px;
    width: 46%;
  }

  .science-data-panel,
  .science-problems,
  .science-trust {
    margin-top: 18px;
  }

  .science-data-panel {
    padding: 18px 12px 14px;
  }

  .science-panel-head h2,
  .science-problems h2 {
    font-size: 24px;
  }

  .science-table-card {
    overflow-x: auto;
  }

  .science-table-card table {
    min-width: 520px;
  }

  .science-brain {
    grid-template-columns: 1fr;
  }

  .science-brain img {
    max-width: 180px;
    justify-self: center;
  }

  .science-problem-grid,
  .science-trust-items {
    grid-template-columns: 1fr;
  }

  .science-trust {
    padding: 16px;
  }

  .science-trust article {
    border-right: 0;
    border-bottom: 1px solid #c9dff4;
  }

  .science-trust article:last-child {
    border-bottom: 0;
  }

  .science-trust .science-box {
    width: min(220px, 78vw);
  }

  .product-page,
  .admin-page {
    padding: 18px 14px 28px;
  }

  .product-left,
  .product-right,
  .admin-row {
    grid-template-columns: 1fr;
  }

  .product-layout,
  .product-left,
  .product-right,
  .article-center,
  .side-card {
    width: 100%;
    max-width: 100%;
  }

  .article-toolbar {
    grid-template-columns: 1fr;
  }

  .product-filter-row {
    align-items: stretch;
    flex-wrap: wrap;
  }

  .product-filter-row .chip-row {
    width: 100%;
  }

  .article-toolbar,
  .article-card,
  .admin-item {
    grid-template-columns: 1fr;
  }

  .article-card img {
    width: 100%;
    height: 180px;
  }

  .article-page {
    padding: 18px 14px 28px;
  }

  .article-breadcrumb {
    font-size: 12px;
  }

  .article-detail {
    padding: 20px;
  }

  .article-detail h1 {
    font-size: 26px;
  }

  .article-save {
    display: none;
  }
}