:root {
  --primary: #206bc4;
  --primary-dark: #1a569d;
  --primary-soft: #e8f0fb;
  --navy: #0c2a52;
  --navy-soft: #153a6b;
  --bg: #f4f6fa;
  --card: #ffffff;
  --text: #1d273b;
  --muted: #667085;
  --line: #e3e8f0;
  --danger: #d63939;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(30, 60, 110, 0.07);
  --shadow-hover: 0 10px 28px rgba(30, 60, 110, 0.14);
  --font: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: 1240px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
p,
ul,
dl,
dd {
  margin: 0;
  padding: 0;
}

ul {
  list-style: none;
}

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

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

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.hidden {
  display: none !important;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

.ico {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 22px;
  border: 1px solid var(--primary);
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.btn:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  box-shadow: 0 6px 16px rgba(32, 107, 196, 0.28);
}

.btn-line {
  background: #fff;
  color: var(--primary);
}

.btn-line:hover {
  background: var(--primary-soft);
  color: var(--primary-dark);
  box-shadow: none;
}

.btn-white {
  background: #fff;
  border-color: #fff;
  color: var(--primary);
}

.btn-white:hover {
  background: var(--primary-soft);
  border-color: var(--primary-soft);
  color: var(--primary-dark);
  box-shadow: none;
}

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: #fff;
  box-shadow: none;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--line);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 800;
  color: var(--navy);
}

.brand img {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--text);
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: var(--primary-soft);
  color: var(--primary);
}

.menu-panel a[aria-current="page"] {
  color: var(--primary);
  font-weight: 700;
}

.nav-links .btn {
  min-height: 38px;
  margin-left: 6px;
  padding: 0 20px;
  color: #fff;
}

.nav-links .btn:hover {
  background: var(--primary-dark);
  color: #fff;
}

.menu-btn {
  display: none;
  min-height: 38px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-weight: 600;
}

.menu-panel {
  display: none;
  padding: 8px 24px 16px;
  background: #fff;
}

.menu-panel a {
  display: block;
  padding: 12px 0;
  font-weight: 500;
}

.hero {
  padding: 56px 0 24px;
  background: linear-gradient(180deg, #e6eefb 0%, var(--bg) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 56px;
  align-items: center;
}

.hero-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
}

.hero-copy h1 {
  margin-top: 18px;
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--navy);
}

.hero-copy p {
  max-width: 34em;
  margin-top: 18px;
  color: var(--muted);
  font-size: 16px;
}

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

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 26px;
  color: var(--muted);
  font-size: 13px;
}

.hero-points li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-points .ico {
  width: 16px;
  height: 16px;
  color: var(--primary);
}

.hero-card {
  padding: 22px;
  border-radius: 14px;
  background: var(--card);
  box-shadow: var(--shadow-hover);
}

.hero-card-top {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
}

.hero-card-top i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ff6b6b;
}

.hero-card-top i:nth-child(2) {
  background: #ffc542;
}

.hero-card-top i:nth-child(3) {
  background: #3ecf8e;
}

.hero-card-top span {
  margin-left: auto;
  color: var(--muted);
  font-size: 12px;
}

.hero-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--navy);
}

.hero-card-group {
  margin-top: 2px;
  color: var(--muted);
  font-size: 13px;
}

.hero-card-specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 16px;
}

.hero-card-specs span {
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--bg);
  font-weight: 600;
}

.hero-card-price {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  padding: 18px 20px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
}

.hero-card-price small {
  display: block;
  opacity: 0.8;
  font-size: 12px;
}

.hero-card-price strong {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
}

.hero-card-price .btn {
  min-height: 38px;
  padding: 0 16px;
}

.hero.no-card .hero-grid {
  grid-template-columns: minmax(0, 1fr);
}

.hero.no-card .hero-card {
  display: none;
}

.quick {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 44px;
}

.quick a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px;
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.quick a:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.quick .ico-box {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
}

.quick strong {
  display: block;
  font-size: 15px;
}

.quick small {
  color: var(--muted);
  font-size: 12.5px;
}

.sec {
  padding: 80px 0 0;
}

.sec-first {
  padding-top: 40px;
}

.page-head {
  padding: 56px 0 40px;
  background: linear-gradient(180deg, #e6eefb 0%, var(--bg) 100%);
}

.page-head h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-weight: 800;
  color: var(--navy);
}

.page-head p {
  max-width: 44em;
  margin-top: 12px;
  color: var(--muted);
  font-size: 16px;
}

.products-more {
  margin-top: 32px;
  text-align: center;
}

.cta-gap {
  margin-top: 80px;
}

.sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 32px;
  margin-bottom: 28px;
}

.sec-head.center {
  display: block;
  text-align: center;
}

.sec-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 800;
  color: var(--navy);
}

.sec-head p {
  max-width: 40em;
  margin-top: 8px;
  color: var(--muted);
}

.sec-head.center p {
  margin-left: auto;
  margin-right: auto;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
}

.tab {
  min-height: 38px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-weight: 600;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.tab.on {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.subtabs {
  display: none;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
  padding: 0 4px;
}

.subtabs.open {
  display: flex;
}

.subtab {
  min-height: 32px;
  padding: 0 14px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-weight: 500;
}

.subtab:hover {
  color: var(--primary);
}

.subtab.on {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
}

.grid-products {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.product {
  display: flex;
  flex-direction: column;
  padding: 22px;
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.product:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.product-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.product h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--navy);
}

.badge {
  flex: none;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
}

.specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.spec {
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--bg);
  font-size: 13px;
  font-weight: 500;
}

.spec-none {
  color: var(--muted);
  font-size: 13px;
}

.product-desc {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.6;
}

.product-foot {
  margin-top: auto;
  padding-top: 20px;
}

.product-price {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.product-price strong {
  color: var(--danger);
  font-size: 24px;
  font-weight: 800;
}

.product-price small {
  color: var(--muted);
  font-size: 12.5px;
  text-align: right;
}

.product-stock {
  min-height: 1.5em;
  color: var(--muted);
  font-size: 12.5px;
}

.product-stock.out {
  color: var(--danger);
  font-weight: 600;
}

.product-action {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  margin-top: 10px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  transition: background-color 0.2s;
}

.product-action:hover {
  background: var(--primary-dark);
}

.product-action.off {
  background: var(--bg);
  color: var(--muted);
  cursor: default;
}

.products-empty {
  padding: 72px 0;
  color: var(--muted);
  text-align: center;
}

.cards4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.cards3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  padding: 24px;
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.card .ico-box {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 16px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
}

.card h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--navy);
}

.card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.promise {
  margin-top: 80px;
  padding: 72px 0;
  background: var(--navy);
  color: #fff;
}

.promise-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 56px;
  align-items: center;
}

.promise h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 800;
}

.promise-text {
  max-width: 28em;
  margin-top: 12px;
  color: #b8c7de;
}

.promise .btn {
  margin-top: 24px;
}

.promise-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.promise-list div {
  padding: 22px;
  border-radius: var(--radius);
  background: var(--navy-soft);
}

.promise-list h3 {
  font-size: 16px;
  font-weight: 700;
}

.promise-list p {
  margin-top: 8px;
  color: #b8c7de;
  font-size: 13.5px;
}

.cta {
  padding: 48px 0;
  background: var(--primary);
  color: #fff;
}

.cta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px 32px;
}

.cta h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  font-weight: 800;
}

.cta p {
  margin-top: 6px;
  color: #d4e3f7;
}

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

.foot {
  padding: 56px 0 28px;
  background: #fff;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr));
  gap: 40px;
}

.foot-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: var(--navy);
}

.foot-desc {
  max-width: 24em;
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
}

.foot h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
}

.foot ul {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.foot li a {
  color: var(--muted);
  font-size: 14px;
}

.foot li a:hover {
  color: var(--primary);
}

.foot-copy {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 32px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.foot-copy a:hover {
  color: var(--primary);
}

@media (max-width: 960px) {
  .nav-links {
    display: none;
  }

  .menu-btn {
    display: inline-flex;
    align-items: center;
  }

  .menu-panel.open {
    display: block;
  }

  .hero-grid,
  .promise-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .quick,
  .cards4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cards3,
  .promise-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 560px) {
  .wrap {
    padding: 0 16px;
  }

  .hero {
    padding-top: 36px;
  }

  .quick,
  .cards4,
  .cards3,
  .promise-list,
  .foot-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .sec {
    padding-top: 56px;
  }
}