/* 银川锝玖专利商标代理事务所 · 门户站 */
:root {
  --navy-900: #0f2a4a;
  --navy-800: #1a3f66;
  --navy-700: #2a5a8a;
  --navy-600: #3a74a8;
  --sky-50: #f3f9ff;
  --sky-100: #e8f3fc;
  --sky-200: #d4e8f8;
  --sky-300: #b7d7f0;
  --gold-500: #b8922a;
  --gold-400: #c9a94a;
  --gold-100: #f8f1de;
  --slate-50: #f7fafc;
  --slate-100: #eef3f8;
  --slate-200: #dde6f0;
  --slate-500: #5b6b7c;
  --slate-700: #334155;
  --slate-900: #152033;
  --white: #ffffff;
  --shadow: 0 10px 28px rgba(30, 90, 140, 0.08);
  --radius: 14px;
  --max: 1120px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--slate-900);
  background: var(--white);
  line-height: 1.65;
}

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

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

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(11, 31, 58, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1rem;
  min-height: 72px;
  position: relative;
  flex-wrap: wrap;
}

.header-inner .nav {
  margin-left: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: contain;
  flex-shrink: 0;
  background: var(--white);
  box-shadow: 0 8px 20px rgba(18, 42, 74, 0.16);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-left: auto;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem;
  border-radius: 999px;
  border: 1px solid var(--slate-200);
  background: var(--slate-50);
  gap: 0.12rem;
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--slate-500);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.32rem 0.55rem;
  border-radius: 999px;
  cursor: pointer;
  line-height: 1;
}

.lang-btn.is-active {
  background: var(--navy-800);
  color: var(--white);
}

.lang-btn:hover:not(.is-active) {
  color: var(--navy-700);
}

.contact-multi {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.contact-list a {
  color: var(--navy-700);
}

.contact-list a:hover {
  color: var(--gold-500);
  text-decoration: underline;
}

.muted {
  margin: 0 0 1rem;
  color: var(--slate-500);
}

.small-note {
  margin: 1.2rem 0 0;
  font-size: 0.92rem;
}

.brand-text strong {
  display: block;
  font-size: 1.05rem;
  color: var(--navy-900);
  letter-spacing: 0.04em;
}

.brand-text span {
  display: block;
  font-size: 0.72rem;
  color: var(--slate-500);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 42vw;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.35rem 1.1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  font-size: 0.92rem;
  color: var(--slate-700);
  padding: 0.35rem 0.15rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--navy-700);
  border-bottom-color: var(--gold-500);
}

.nav .btn-nav {
  margin-left: 0.35rem;
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  background: var(--navy-800);
  color: var(--white);
  border-bottom: none;
}

.nav .btn-nav:hover {
  background: var(--navy-700);
  border-bottom: none;
  color: var(--white);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--slate-200);
  background: var(--white);
  border-radius: 10px;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--navy-800);
}

/* Hero — light airy blue */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 55% at 92% 8%, rgba(255, 255, 255, 0.9), transparent 50%),
    radial-gradient(ellipse 55% 50% at 8% 90%, rgba(160, 205, 240, 0.45), transparent 55%),
    linear-gradient(165deg, #eef7ff 0%, #e3f1fb 42%, #d7ebf8 100%);
  color: var(--slate-900);
  padding: 4.4rem 0 4.6rem;
  border-bottom: 1px solid rgba(120, 170, 210, 0.22);
}

.hero::after {
  content: "";
  position: absolute;
  inset: -20% 40% auto auto;
  width: 48%;
  height: 80%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.55), transparent 68%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.25fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(90, 150, 200, 0.28);
  color: var(--navy-700);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.1rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.8rem, 3.8vw, 2.5rem);
  line-height: 1.28;
  letter-spacing: 0.01em;
  font-weight: 700;
  color: var(--navy-900);
}

.hero h1 em {
  font-style: normal;
  color: var(--navy-700);
  background: linear-gradient(90deg, var(--navy-800), var(--navy-600));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  margin: 0 0 1.6rem;
  max-width: 36rem;
  color: var(--slate-500);
  font-size: 1.02rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.72rem 1.25rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, background 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, #3d7eb8, #2a5f96);
  color: var(--white);
  box-shadow: 0 8px 18px rgba(42, 95, 150, 0.22);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4a8bc4, #3369a3);
  color: var(--white);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.72);
  color: var(--navy-800);
  border-color: rgba(90, 150, 200, 0.35);
}

.btn-ghost:hover {
  background: var(--white);
  border-color: rgba(60, 120, 180, 0.45);
}

.btn-outline-dark {
  background: transparent;
  color: var(--navy-800);
  border-color: var(--slate-200);
}

.btn-outline-dark:hover {
  border-color: var(--navy-600);
  color: var(--navy-700);
  background: var(--sky-50);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem 1.6rem;
  color: var(--slate-500);
  font-size: 0.88rem;
}

.hero-meta strong {
  display: block;
  color: var(--navy-800);
  font-size: 1.08rem;
  margin-bottom: 0.15rem;
}

.hero-card {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(120, 170, 210, 0.28);
  border-radius: 18px;
  padding: 1.35rem 1.35rem 1.15rem;
  backdrop-filter: blur(10px);
  box-shadow: 0 14px 36px rgba(40, 100, 150, 0.1);
}

.hero-card h3 {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy-800);
}

.hero-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.hero-card li {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  padding: 0.65rem 0;
  border-top: 1px solid rgba(150, 190, 220, 0.28);
  font-size: 0.92rem;
  color: var(--slate-700);
}

.hero-card li:first-child {
  border-top: none;
  padding-top: 0;
}

.hero-card li strong {
  color: var(--navy-900);
}

.dot {
  width: 8px;
  height: 8px;
  margin-top: 0.45rem;
  border-radius: 50%;
  background: #4a90c8;
  flex-shrink: 0;
}

/* Sections */
section {
  padding: 4.2rem 0;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2.2rem;
}

.section-head .tag {
  display: inline-block;
  color: var(--navy-600);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.55rem;
}

.section-head h2 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.45rem, 2.6vw, 1.9rem);
  color: var(--navy-900);
  letter-spacing: 0.02em;
}

.section-head p {
  margin: 0;
  color: var(--slate-500);
}

.bg-soft {
  background: linear-gradient(180deg, var(--sky-50), var(--white) 75%);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
}

.about-card,
.info-panel {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.about-card h3,
.info-panel h3 {
  margin: 0 0 0.8rem;
  font-size: 1.1rem;
  color: var(--navy-800);
}

.about-card p {
  margin: 0 0 0.9rem;
  color: var(--slate-700);
}

.about-card p:last-child {
  margin-bottom: 0;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.pill {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--sky-100);
  color: var(--navy-700);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid rgba(120, 170, 210, 0.28);
}

.info-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.info-list li {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 0.5rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--slate-100);
  font-size: 0.94rem;
}

.info-list li:last-child {
  border-bottom: none;
}

.info-list span {
  color: var(--slate-500);
}

.info-list strong {
  color: var(--slate-900);
  font-weight: 600;
}

/* Services */
.cards-3 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.1rem;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 1.35rem;
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(35, 75, 122, 0.25);
}

.service-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, #e8f3fc, #d4e8f8);
  color: var(--navy-700);
  border: 1px solid rgba(120, 170, 210, 0.35);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.95rem;
}

.service-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
  color: var(--navy-900);
}

.service-card p {
  margin: 0;
  color: var(--slate-500);
  font-size: 0.93rem;
}

/* Products */
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.product-card {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid var(--slate-200);
  background: var(--white);
  padding: 1.6rem 1.5rem 1.4rem;
  box-shadow: var(--shadow);
}

.product-card.featured {
  background:
    linear-gradient(160deg, rgba(18, 42, 74, 0.03), transparent 40%),
    var(--white);
  border-color: rgba(35, 75, 122, 0.22);
}

.product-card.coming {
  background: linear-gradient(180deg, #fbfcfe, #f3f6fa);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.85rem;
}

.badge-live {
  background: rgba(34, 120, 80, 0.1);
  color: #1b6b45;
}

.badge-soon {
  background: rgba(201, 162, 39, 0.16);
  color: #8a6a10;
}

.product-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.2rem;
  color: var(--navy-900);
}

.product-card .sub {
  margin: 0 0 1rem;
  color: var(--slate-500);
  font-size: 0.94rem;
}

.feature-list {
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding: 0.35rem 0 0.35rem 1.15rem;
  color: var(--slate-700);
  font-size: 0.93rem;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4a90c8;
}

.product-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* CTA */
.cta {
  padding: 0 0 4.2rem;
}

.cta-box {
  border-radius: 20px;
  padding: 2rem 1.75rem;
  background:
    radial-gradient(circle at 92% 18%, rgba(255, 255, 255, 0.75), transparent 40%),
    linear-gradient(135deg, #eaf5fd, #d9edf9 55%, #cfe6f6);
  color: var(--navy-900);
  border: 1px solid rgba(120, 170, 210, 0.3);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  box-shadow: var(--shadow);
}

.cta-box h2 {
  margin: 0 0 0.45rem;
  font-size: 1.3rem;
  color: var(--navy-900);
}

.cta-box p {
  margin: 0;
  color: var(--slate-500);
  max-width: 34rem;
}

/* Footer */
.site-footer {
  background: #123553;
  color: rgba(255, 255, 255, 0.74);
  padding: 2.4rem 0 1.6rem;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.8rem;
}

.site-footer h4 {
  margin: 0 0 0.75rem;
  color: var(--white);
  font-size: 0.95rem;
}

.site-footer p,
.site-footer a {
  color: rgba(255, 255, 255, 0.7);
}

.site-footer a:hover {
  color: #b8ddf5;
}

.footer-links {
  display: grid;
  gap: 0.4rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  justify-content: space-between;
  align-items: center;
  font-size: 0.84rem;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.78);
}

.footer-bottom a:hover {
  color: #b8ddf5;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid,
  .about-grid,
  .product-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .cards-3 {
    grid-template-columns: 1fr;
  }

  .brand-text span {
    max-width: 55vw;
  }
}

@media (max-width: 980px) {
  .header-inner .nav {
    margin-left: 0;
  }

  .header-tools {
    margin-left: auto;
  }
}

@media (max-width: 720px) {
  .menu-toggle {
    display: inline-flex;
  }

  .header-inner {
    flex-wrap: nowrap;
  }

  .nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 0.35rem);
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: 12px;
    padding: 0.75rem;
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: stretch;
    z-index: 120;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 0.55rem 0.4rem;
  }

  .nav .btn-nav {
    margin-left: 0;
    text-align: center;
  }

  .hero {
    padding: 3.2rem 0 3.5rem;
  }

  section {
    padding: 3.2rem 0;
  }

  .cards-3 {
    grid-template-columns: 1fr;
  }
}