/* PokerStars 官方软件中心 — 深石板色主题 */
:root {
  --bg: #0d1520;
  --card: #152233;
  --card-2: #1a2a3e;
  --line: #243447;
  --text: #e8eef5;
  --muted: #8fa3b8;
  --gold: #d4a017;
  --gold-dim: #a67c12;
  --red: #e10600;
  --red-dark: #b00500;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --max: 1120px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
}

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

a {
  color: var(--gold);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #f0c040;
}

ul,
ol {
  padding-left: 1.2rem;
}

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

/* —— Header —— */
.hdr {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 21, 32, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.hdr-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--white);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.brand span {
  white-space: nowrap;
}

.navs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navs a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.navs a:hover,
.navs a.is-on {
  color: var(--white);
  border-bottom-color: var(--gold);
}

.menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
}

.menu-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* —— Hero / Download banner —— */
.dl-banner {
  position: relative;
  overflow: hidden;
  padding: 3.5rem 0 3rem;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(225, 6, 0, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 50% at 15% 80%, rgba(212, 160, 23, 0.12), transparent 50%),
    linear-gradient(165deg, #111c2c 0%, var(--bg) 55%, #0a1018 100%);
  border-bottom: 1px solid var(--line);
}

.dl-banner h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.25;
}

.dl-banner h1 em {
  font-style: normal;
  color: var(--gold);
}

.dl-banner .lead {
  margin: 0 0 1.5rem;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.5rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-gold {
  background: linear-gradient(135deg, var(--gold) 0%, #e8b820 100%);
  color: #1a1200;
  box-shadow: 0 6px 20px rgba(212, 160, 23, 0.35);
}

.btn-gold:hover {
  color: #1a1200;
  box-shadow: 0 8px 28px rgba(212, 160, 23, 0.5);
}

.btn-red {
  background: linear-gradient(135deg, var(--red) 0%, #ff2a1f 100%);
  color: var(--white);
  box-shadow: 0 6px 20px rgba(225, 6, 0, 0.35);
}

.btn-red:hover {
  color: var(--white);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.trust-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.trust-line strong {
  color: var(--gold);
  font-weight: 600;
}

/* —— Sections —— */
.sec {
  padding: 3rem 0;
}

.sec-head {
  margin-bottom: 1.75rem;
}

.sec-head h2 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 700;
}

.sec-head p {
  margin: 0;
  color: var(--muted);
  max-width: 40rem;
}

.tag {
  display: inline-block;
  margin-bottom: 0.5rem;
  padding: 0.2rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gold);
  background: rgba(212, 160, 23, 0.12);
  border: 1px solid rgba(212, 160, 23, 0.3);
  border-radius: 4px;
}

/* —— Platform cards —— */
.plat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.plat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.2rem;
  text-align: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.plat:hover {
  border-color: var(--gold);
  box-shadow: var(--shadow);
}

.plat .ico {
  width: 52px;
  height: 52px;
  margin: 0 auto 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--card-2);
  font-size: 1.5rem;
  color: var(--gold);
}

.plat h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.plat p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.plat .btn {
  width: 100%;
  padding: 0.65rem 1rem;
  font-size: 0.9rem;
}

/* —— Merit / advantages —— */
.merit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.merit {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.25rem;
  transition: border-color 0.2s ease;
}

.merit:hover {
  border-color: rgba(212, 160, 23, 0.45);
}

.merit .num {
  display: inline-block;
  margin-bottom: 0.6rem;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--red);
  letter-spacing: 0.04em;
}

.merit h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.merit p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

/* —— Frame / figure blocks —— */
.frame {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 1.25rem 0;
}

.frame img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--card-2);
}

.frame figcaption {
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.frame-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.frame-row .frame {
  margin: 0;
}

/* —— Preview lists —— */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.preview-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.preview-card h3 {
  margin: 0;
  font-size: 1rem;
}

.preview-card p {
  margin: 0;
  flex: 1;
  color: var(--muted);
  font-size: 0.88rem;
}

.preview-card a.more {
  font-size: 0.88rem;
  font-weight: 600;
}

/* —— Flash / list items —— */
.flash-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.flash-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
}

.flash-item time {
  flex-shrink: 0;
  font-size: 0.8rem;
  color: var(--gold);
  font-weight: 600;
  min-width: 5.5rem;
}

.flash-item h3 {
  margin: 0 0 0.25rem;
  font-size: 0.98rem;
}

.flash-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

/* —— Pagination —— */
.pages {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.pages button {
  min-width: 38px;
  height: 38px;
  padding: 0 0.65rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--card);
  color: var(--muted);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.pages button:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.pages button.is-on {
  background: var(--gold);
  border-color: var(--gold);
  color: #1a1200;
}

/* —— Content pages —— */
.page-hero {
  padding: 2.25rem 0 1.5rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #111c2c 0%, var(--bg) 100%);
}

.page-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 42rem;
}

.prose {
  max-width: 48rem;
}

.prose h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.35rem;
  color: var(--white);
}

.prose h3 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1.1rem;
}

.prose p {
  color: var(--muted);
}

.prose li {
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.faq {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 650;
  color: var(--white);
  list-style: none;
}

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

.faq summary::before {
  content: "+";
  display: inline-block;
  width: 1.2rem;
  margin-right: 0.4rem;
  color: var(--gold);
  font-weight: 800;
}

.faq details[open] summary::before {
  content: "−";
}

.faq details p {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.install-block {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}

.install-block h2 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.install-block .meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.steps {
  margin: 1rem 0 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

.steps li {
  margin-bottom: 0.45rem;
}

/* —— Footer —— */
.ftr {
  margin-top: 2rem;
  padding: 2.5rem 0 2rem;
  background: #0a1018;
  border-top: 1px solid var(--line);
}

.ftr-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.ftr h3 {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  color: var(--white);
}

.ftr p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

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

.ftr li {
  margin-bottom: 0.4rem;
}

.ftr a {
  color: var(--muted);
  font-size: 0.88rem;
}

.ftr a:hover {
  color: var(--gold);
}

.ftr-copy {
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
}

/* —— 404 —— */
.err-box {
  text-align: center;
  padding: 5rem 1rem;
}

.err-box .code {
  font-size: 4rem;
  font-weight: 800;
  color: var(--red);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.err-box h1 {
  margin: 0 0 0.75rem;
}

.err-box p {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

/* —— Responsive —— */
@media (max-width: 960px) {
  .plat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .preview-grid {
    grid-template-columns: 1fr 1fr;
  }

  .ftr-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .menu-btn {
    display: inline-flex;
  }

  .navs {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1rem 1rem;
    background: rgba(13, 21, 32, 0.98);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }

  .navs.is-show {
    display: flex;
  }

  .navs a {
    padding: 0.75rem 0.5rem;
    border-bottom: 1px solid var(--line);
  }

  .navs a.is-on {
    border-bottom-color: var(--gold);
  }

  .hdr {
    position: relative;
  }

  .hdr-inner {
    position: relative;
  }

  .frame-row {
    grid-template-columns: 1fr;
  }

  .flash-item {
    flex-direction: column;
    gap: 0.35rem;
  }
}

@media (max-width: 560px) {
  .plat-grid,
  .merit-grid,
  .preview-grid,
  .ftr-grid {
    grid-template-columns: 1fr;
  }

  .dl-banner {
    padding: 2.5rem 0 2rem;
  }

  .cta-row {
    flex-direction: column;
  }

  .cta-row .btn {
    width: 100%;
  }
}