/* =====================================================
   Prism Flow Theme — google3
   Palette: Deep Navy #0d1b2a | Teal #0abf8e | Gold #f5a623 | White #f8fbff
   ===================================================== */

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes floatUp { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes glowPulse { 0%,100% { box-shadow: 0 0 20px rgba(10,191,142,0.3); } 50% { box-shadow: 0 0 44px rgba(10,191,142,0.65); } }
@keyframes fadeInUp { from { opacity:0; transform:translateY(28px); } to { opacity:1; transform:translateY(0); } }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #0d1b2a;
  --navy2: #142438;
  --teal: #0abf8e;
  --teal2: #07a579;
  --gold: #f5a623;
  --gold2: #e0921a;
  --white: #f8fbff;
  --gray: #e4ecf5;
  --muted: #6b8aa8;
  --text: #1a2c3d;
  --radius: 14px;
  --shadow: 0 8px 32px rgba(13,27,42,0.13);
  --shadow-lg: 0 18px 56px rgba(13,27,42,0.22);
}

html { scroll-behavior: smooth; }
body { font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--white); color: var(--text); line-height: 1.7; font-size: 16px; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
button { cursor: pointer; font-family: inherit; }

/* ── TOPNAV ── */
.topnav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13,27,42,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(10,191,142,0.18);
}
.nav-wrap {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px; height: 64px;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.15rem; color: #fff; letter-spacing: -0.3px;
}
.nav-brand svg { flex-shrink: 0; }
.nav-brand span em { color: var(--teal); font-style: normal; }
.nav-list { display: flex; gap: 6px; list-style: none; }
.nav-list a {
  display: block; padding: 7px 18px; border-radius: 50px;
  color: rgba(255,255,255,0.72); font-size: 0.93rem; font-weight: 500;
  transition: all 0.2s;
}
.nav-list a:hover { color: #fff; background: rgba(255,255,255,0.09); }
.nav-list a.active { color: var(--navy); background: var(--teal); font-weight: 700; }
.nav-cta {
  background: var(--gold); color: var(--navy); font-weight: 800;
  padding: 8px 22px; border-radius: 50px; font-size: 0.9rem;
  transition: background 0.2s; white-space: nowrap;
  border: none; cursor: pointer;
}
.nav-cta:hover { background: var(--gold2); }

/* ── HERO ── */
.hero {
  background: linear-gradient(135deg, #0d1b2a 0%, #0e2a3f 40%, #0a2535 70%, #091e2f 100%);
  position: relative; overflow: hidden; padding: 0;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 75% 60%, rgba(10,191,142,0.12) 0%, transparent 65%),
              radial-gradient(ellipse 50% 60% at 15% 30%, rgba(245,166,35,0.08) 0%, transparent 55%);
}
.hero-stripe {
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--teal), var(--gold), var(--teal));
}
.hero-inner {
  max-width: 1200px; margin: 0 auto; padding: 96px 28px 80px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center;
  position: relative; z-index: 1;
}
.hero-label {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(10,191,142,0.15); border: 1px solid rgba(10,191,142,0.35);
  color: var(--teal); padding: 6px 16px; border-radius: 50px;
  font-size: 0.82rem; font-weight: 700; letter-spacing: 0.5px; text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-label .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); animation: glowPulse 2s infinite; }
.hero-title {
  font-size: clamp(2.1rem, 4.5vw, 3.6rem); font-weight: 900;
  color: #fff; line-height: 1.12; letter-spacing: -1.5px; margin-bottom: 22px;
}
.hero-title .hl { color: var(--teal); }
.hero-title .hl2 { color: var(--gold); }
.hero-desc { color: rgba(255,255,255,0.72); font-size: 1.08rem; line-height: 1.75; margin-bottom: 34px; max-width: 480px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero-meta { margin-top: 28px; display: flex; gap: 28px; }
.hero-meta-item { text-align: center; }
.hero-meta-num { font-size: 1.5rem; font-weight: 900; color: var(--teal); display: block; }
.hero-meta-lbl { font-size: 0.78rem; color: rgba(255,255,255,0.5); }

.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-graphic {
  width: 420px; max-width: 100%;
  animation: floatUp 5s ease-in-out infinite;
}
.browser-frame {
  background: rgba(255,255,255,0.06); border: 1.5px solid rgba(10,191,142,0.25);
  border-radius: 18px; overflow: hidden; backdrop-filter: blur(8px);
  box-shadow: 0 24px 80px rgba(0,0,0,0.5), 0 0 60px rgba(10,191,142,0.15);
}
.bf-bar {
  background: rgba(255,255,255,0.08); padding: 12px 18px;
  display: flex; align-items: center; gap: 10px; border-bottom: 1px solid rgba(255,255,255,0.07);
}
.bf-dots { display: flex; gap: 6px; }
.bf-dot { width: 11px; height: 11px; border-radius: 50%; }
.bf-dot.r { background: #ff5f57; }
.bf-dot.y { background: #febc2e; }
.bf-dot.g { background: #28c840; }
.bf-url {
  flex: 1; background: rgba(255,255,255,0.08); border-radius: 6px;
  padding: 5px 12px; color: rgba(255,255,255,0.55); font-size: 0.78rem;
  display: flex; align-items: center; gap: 6px;
}
.bf-body { padding: 28px 22px 24px; }
.bf-tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.bf-tab {
  background: rgba(10,191,142,0.12); border: 1px solid rgba(10,191,142,0.2);
  border-radius: 8px; padding: 7px 16px; color: rgba(255,255,255,0.7); font-size: 0.8rem;
}
.bf-tab.active { background: var(--teal); color: var(--navy); font-weight: 700; }
.bf-search {
  background: rgba(255,255,255,0.07); border-radius: 10px; padding: 12px 16px;
  color: rgba(255,255,255,0.5); font-size: 0.85rem; margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}
.bf-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }
.bf-card {
  background: rgba(255,255,255,0.06); border-radius: 8px; padding: 14px 10px;
  text-align: center; border: 1px solid rgba(255,255,255,0.05);
}
.bf-card-ico { font-size: 1.6rem; margin-bottom: 5px; }
.bf-card-lbl { color: rgba(255,255,255,0.5); font-size: 0.68rem; }

/* ── BUTTONS ── */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 28px; border-radius: 50px; font-size: 0.95rem; font-weight: 700; border: none; transition: all 0.22s; }
.btn-teal { background: var(--teal); color: var(--navy); }
.btn-teal:hover { background: var(--teal2); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(10,191,142,0.4); }
.btn-gold { background: var(--gold); color: var(--navy); }
.btn-gold:hover { background: var(--gold2); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(245,166,35,0.4); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: var(--teal); color: var(--teal); }
.btn-outline-dark { background: transparent; color: var(--navy); border: 2px solid var(--navy); border-radius: 50px; padding: 11px 26px; font-weight: 700; font-size: 0.93rem; transition: all 0.2s; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; }
.btn-outline-dark:hover { background: var(--navy); color: #fff; }
.btn-white { background: #fff; color: var(--navy); border: none; border-radius: 50px; padding: 13px 28px; font-weight: 700; font-size: 0.95rem; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; transition: all 0.22s; }
.btn-white:hover { background: var(--gray); transform: translateY(-2px); }
.btn-lg { padding: 16px 36px; font-size: 1.06rem; }
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }

/* ── SECTIONS ── */
.sec { padding: 88px 0; }
.sec-alt { background: #f0f6fc; padding: 88px 0; }
.sec-navy { background: var(--navy); padding: 88px 0; }
.sec-navy2 { background: var(--navy2); padding: 88px 0; }
.sec-teal { background: var(--teal); padding: 72px 0; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.sec-head { text-align: center; margin-bottom: 60px; }
.sec-tag {
  display: inline-block; background: rgba(10,191,142,0.12); color: var(--teal);
  border: 1px solid rgba(10,191,142,0.3); border-radius: 50px;
  padding: 4px 16px; font-size: 0.78rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.6px; margin-bottom: 14px;
}
.sec-tag.gold { background: rgba(245,166,35,0.12); color: var(--gold2); border-color: rgba(245,166,35,0.3); }
.sec-tag.white { background: rgba(255,255,255,0.12); color: #fff; border-color: rgba(255,255,255,0.25); }
.sec-title { font-size: clamp(1.65rem, 3vw, 2.4rem); font-weight: 900; letter-spacing: -0.8px; color: var(--navy); line-height: 1.2; }
.sec-title.light { color: #fff; }
.sec-sub { color: var(--muted); font-size: 1rem; margin-top: 14px; max-width: 600px; margin-left: auto; margin-right: auto; line-height: 1.7; }
.sec-sub.light { color: rgba(255,255,255,0.65); }

/* ── FEATURE CARDS ── */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feat-card {
  background: #fff; border-radius: var(--radius); padding: 34px 28px;
  border: 1.5px solid var(--gray); transition: all 0.25s;
  position: relative; overflow: hidden;
}
.feat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--gold));
  opacity: 0; transition: opacity 0.25s;
}
.feat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(10,191,142,0.25); }
.feat-card:hover::before { opacity: 1; }
.feat-ico {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(10,191,142,0.1), rgba(10,191,142,0.18));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.feat-ico.gold { background: linear-gradient(135deg, rgba(245,166,35,0.1), rgba(245,166,35,0.18)); }
.feat-ico.navy { background: linear-gradient(135deg, rgba(13,27,42,0.08), rgba(13,27,42,0.15)); }
.feat-name { font-size: 1.08rem; font-weight: 800; color: var(--navy); margin-bottom: 10px; }
.feat-desc { color: var(--muted); font-size: 0.9rem; line-height: 1.72; }

/* ── PLATFORM CARDS ── */
.plat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.plat-card {
  background: var(--navy2); border-radius: var(--radius); padding: 30px 22px;
  border: 1.5px solid rgba(10,191,142,0.12); text-align: center; transition: all 0.25s;
}
.plat-card:hover { border-color: var(--teal); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(10,191,142,0.2); }
.plat-ico { width: 64px; height: 64px; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; }
.plat-name { font-size: 1rem; font-weight: 800; color: #fff; margin-bottom: 6px; }
.plat-ver { font-size: 0.8rem; color: rgba(255,255,255,0.5); margin-bottom: 18px; }
.plat-steps { text-align: left; list-style: none; margin-bottom: 18px; }
.plat-steps li { font-size: 0.83rem; color: rgba(255,255,255,0.6); padding: 3px 0; padding-left: 14px; position: relative; }
.plat-steps li::before { content: '›'; position: absolute; left: 0; color: var(--teal); font-weight: 700; }

/* ── DEEP FEATURES ── */
.deep-row { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; padding: 70px 0; border-bottom: 1px solid rgba(10,191,142,0.08); }
.deep-row:last-child { border-bottom: none; }
.deep-row.rev .deep-visual { order: -1; }
.deep-badge { display: inline-block; background: var(--teal); color: var(--navy); border-radius: 50px; padding: 4px 14px; font-size: 0.78rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 14px; }
.deep-badge.gold { background: var(--gold); }
.deep-title { font-size: 1.75rem; font-weight: 900; color: var(--navy); letter-spacing: -0.5px; margin-bottom: 14px; line-height: 1.25; }
.deep-title.light { color: #fff; }
.deep-desc { color: var(--muted); line-height: 1.78; margin-bottom: 18px; }
.deep-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.deep-list li { display: flex; align-items: flex-start; gap: 10px; color: var(--muted); font-size: 0.9rem; }
.deep-list li::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--teal); flex-shrink: 0; margin-top: 7px; }
.deep-visual {
  background: linear-gradient(135deg, rgba(10,191,142,0.07), rgba(245,166,35,0.05));
  border-radius: 20px; padding: 40px; display: flex; align-items: center; justify-content: center;
  border: 1.5px solid rgba(10,191,142,0.12); min-height: 300px;
}
.deep-visual svg { max-width: 100%; }

/* ── REVIEWS ── */
.rev-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.rev-card {
  background: #fff; border-radius: var(--radius); padding: 28px;
  border: 1.5px solid var(--gray); transition: box-shadow 0.22s;
}
.rev-card:hover { box-shadow: var(--shadow); }
.rev-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.rev-avatar {
  width: 46px; height: 46px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1rem; color: #fff;
}
.av-teal { background: linear-gradient(135deg, var(--teal), #08a87c); }
.av-gold { background: linear-gradient(135deg, var(--gold), #d97706); }
.av-navy { background: linear-gradient(135deg, var(--navy2), #1e3a5f); }
.av-indigo { background: linear-gradient(135deg, #6366f1, #4f46e5); }
.av-rose { background: linear-gradient(135deg, #f43f5e, #e11d48); }
.av-emerald { background: linear-gradient(135deg, #10b981, #059669); }
.rev-name { font-weight: 800; font-size: 0.95rem; color: var(--navy); }
.rev-role { font-size: 0.78rem; color: var(--muted); }
.rev-stars { color: var(--gold); font-size: 0.9rem; margin-bottom: 10px; letter-spacing: 2px; }
.rev-text { color: #4a6074; font-size: 0.9rem; line-height: 1.7; }

/* ── STATS BAND ── */
.stats-band {
  background: linear-gradient(90deg, var(--navy) 0%, var(--navy2) 50%, var(--navy) 100%);
  padding: 56px 0;
}
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stat-item { text-align: center; padding: 24px; border-right: 1px solid rgba(10,191,142,0.15); }
.stat-item:last-child { border-right: none; }
.stat-num { font-size: 2.5rem; font-weight: 900; color: var(--teal); display: block; letter-spacing: -1px; }
.stat-lbl { color: rgba(255,255,255,0.55); font-size: 0.85rem; margin-top: 4px; }

/* ── COMPARISON TABLE ── */
.cmp-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow); }
.cmp-table { width: 100%; border-collapse: collapse; background: #fff; }
.cmp-table th { background: var(--navy); color: #fff; padding: 16px 22px; text-align: center; font-size: 0.9rem; font-weight: 700; }
.cmp-table th:first-child { text-align: left; background: var(--navy2); }
.cmp-table td { padding: 14px 22px; text-align: center; font-size: 0.88rem; border-bottom: 1px solid var(--gray); color: var(--text); }
.cmp-table td:first-child { text-align: left; font-weight: 600; color: var(--navy); }
.cmp-table tr:last-child td { border-bottom: none; }
.cmp-table tr:nth-child(even) td { background: #f7fbff; }
.cmp-hl { background: rgba(10,191,142,0.06) !important; }
.cmp-table .yes { color: var(--teal); font-weight: 700; }
.cmp-table .no { color: #aab8c6; }
.cmp-table .part { color: var(--gold2); }

/* ── FAQ ── */
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: #fff; border-radius: var(--radius); border: 1.5px solid var(--gray); overflow: hidden; transition: border-color 0.2s; }
.faq-item.open { border-color: var(--teal); }
.faq-q {
  padding: 20px 26px; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  font-weight: 700; font-size: 0.97rem; color: var(--navy); user-select: none;
}
.faq-chevron { transition: transform 0.25s; flex-shrink: 0; margin-left: 16px; }
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-item.open .faq-a { max-height: 400px; }
.faq-a-inner { padding: 0 26px 22px; color: var(--muted); line-height: 1.75; font-size: 0.92rem; }

/* ── CTA BANNER ── */
.cta-banner {
  background: linear-gradient(135deg, var(--teal) 0%, #07a579 60%, #089068 100%);
  border-radius: 24px; padding: 64px 48px; text-align: center;
}
.cta-title { font-size: 2rem; font-weight: 900; color: var(--navy); margin-bottom: 14px; letter-spacing: -0.5px; }
.cta-desc { color: rgba(13,27,42,0.75); font-size: 1rem; margin-bottom: 30px; max-width: 500px; margin-left: auto; margin-right: auto; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ── DOWNLOAD PAGE ── */
.dl-hero { background: linear-gradient(135deg, var(--navy) 0%, #0e2840 100%); padding: 80px 0 64px; position: relative; overflow: hidden; }
.dl-hero::after { content: ''; position: absolute; top: -40%; right: -10%; width: 500px; height: 500px; border-radius: 50%; background: radial-gradient(circle, rgba(10,191,142,0.1) 0%, transparent 70%); }
.dl-hero-inner { max-width: 860px; margin: 0 auto; padding: 0 28px; text-align: center; position: relative; z-index: 1; }
.dl-hero-tag { display: inline-flex; align-items: center; gap: 6px; background: rgba(10,191,142,0.15); border: 1px solid rgba(10,191,142,0.3); color: var(--teal); padding: 5px 15px; border-radius: 50px; font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 18px; }
.dl-hero-title { font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 900; color: #fff; margin-bottom: 14px; letter-spacing: -1px; }
.dl-hero-sub { color: rgba(255,255,255,0.65); font-size: 1.02rem; max-width: 560px; margin: 0 auto 36px; }

.dl-main-box {
  background: #fff; border-radius: 24px; padding: 44px 48px;
  box-shadow: 0 24px 80px rgba(13,27,42,0.25); max-width: 720px; margin: 0 auto;
  border-top: 4px solid var(--teal);
}
.dl-main-head { display: flex; align-items: center; gap: 18px; margin-bottom: 28px; }
.dl-main-icon { width: 70px; height: 70px; flex-shrink: 0; }
.dl-main-name { font-size: 1.5rem; font-weight: 900; color: var(--navy); }
.dl-main-meta { font-size: 0.85rem; color: var(--muted); margin-top: 3px; }
.dl-specs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 28px; }
.dl-spec { background: var(--gray); border-radius: 10px; padding: 14px 16px; }
.dl-spec-label { font-size: 0.76rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; margin-bottom: 4px; }
.dl-spec-val { font-size: 0.95rem; font-weight: 700; color: var(--navy); }

.other-plats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 48px; }
.op-card {
  background: var(--navy2); border-radius: var(--radius); padding: 30px 22px; text-align: center;
  border: 1.5px solid rgba(10,191,142,0.1); transition: all 0.25s;
}
.op-card:hover { border-color: var(--teal); transform: translateY(-4px); }
.op-ico { width: 60px; height: 60px; margin: 0 auto 14px; display: flex; align-items: center; justify-content: center; }
.op-name { font-size: 1rem; font-weight: 800; color: #fff; margin-bottom: 5px; }
.op-ver { font-size: 0.8rem; color: rgba(255,255,255,0.5); margin-bottom: 16px; }
.op-steps { text-align: left; list-style: none; margin-bottom: 18px; }
.op-steps li { font-size: 0.8rem; color: rgba(255,255,255,0.55); padding: 2px 0 2px 14px; position: relative; }
.op-steps li::before { content: '·'; position: absolute; left: 0; color: var(--teal); font-weight: 700; font-size: 1.1rem; line-height: 1.4; }

/* ── GUIDE STEPS ── */
.guide-steps { display: flex; flex-direction: column; gap: 0; }
.gstep { display: flex; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--gray); }
.gstep:last-child { border-bottom: none; }
.gstep-num {
  width: 48px; height: 48px; border-radius: 50%; background: var(--teal);
  color: var(--navy); font-weight: 900; font-size: 1.1rem; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 2px;
}
.gstep-num.gold { background: var(--gold); }
.gstep-title { font-size: 1.05rem; font-weight: 800; color: var(--navy); margin-bottom: 8px; }
.gstep-desc { color: var(--muted); font-size: 0.9rem; line-height: 1.72; }

/* ── VERSION TIMELINE ── */
.ver-list { display: flex; flex-direction: column; gap: 0; }
.ver-item { display: flex; gap: 0; }
.ver-dot-col { display: flex; flex-direction: column; align-items: center; margin-right: 24px; }
.ver-dot { width: 16px; height: 16px; border-radius: 50%; background: var(--teal); flex-shrink: 0; margin-top: 4px; }
.ver-dot.gold { background: var(--gold); }
.ver-line { width: 2px; background: var(--gray); flex: 1; margin: 6px 0; }
.ver-body { padding-bottom: 32px; flex: 1; }
.ver-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.ver-tag { background: var(--teal); color: var(--navy); font-size: 0.78rem; font-weight: 800; padding: 2px 10px; border-radius: 50px; }
.ver-tag.lts { background: var(--gold); }
.ver-date { font-size: 0.82rem; color: var(--muted); }
.ver-desc { color: var(--muted); font-size: 0.88rem; line-height: 1.7; }
.ver-item:last-child .ver-line { display: none; }

/* ── REQ GRID ── */
.req-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.req-card { background: #fff; border-radius: var(--radius); padding: 28px; border: 1.5px solid var(--gray); }
.req-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.req-ico { width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg, rgba(10,191,142,0.12), rgba(10,191,142,0.2)); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.req-title { font-size: 1rem; font-weight: 800; color: var(--navy); }
.req-list { list-style: none; }
.req-list li { display: flex; align-items: flex-start; gap: 8px; font-size: 0.87rem; color: var(--muted); padding: 4px 0; }
.req-list li::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--teal); flex-shrink: 0; margin-top: 7px; }

/* ── SECURITY BANNER ── */
.sec-banner {
  background: linear-gradient(90deg, rgba(10,191,142,0.08), rgba(245,166,35,0.06));
  border: 1.5px solid rgba(10,191,142,0.2); border-radius: var(--radius);
  padding: 28px 32px; display: flex; align-items: center; gap: 20px;
}
.sec-banner-ico { flex-shrink: 0; }
.sec-banner-title { font-size: 1rem; font-weight: 800; color: var(--navy); margin-bottom: 4px; }
.sec-banner-desc { font-size: 0.87rem; color: var(--muted); line-height: 1.65; }

/* ── ARTICLE / ZH-CN ── */
.article-hero { background: linear-gradient(135deg, #0d1b2a 0%, #0e2840 100%); padding: 80px 0 64px; }
.article-hero-inner { max-width: 860px; margin: 0 auto; padding: 0 28px; text-align: center; }
.article-title { font-size: clamp(1.8rem, 4vw, 2.9rem); font-weight: 900; color: #fff; margin-bottom: 16px; letter-spacing: -0.8px; }
.article-desc { color: rgba(255,255,255,0.65); font-size: 1.02rem; line-height: 1.72; margin-bottom: 28px; }
.kw-strip { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.kw { background: rgba(10,191,142,0.15); border: 1px solid rgba(10,191,142,0.3); color: var(--teal); padding: 4px 14px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; }

.article-layout { display: grid; grid-template-columns: 1fr 340px; gap: 48px; align-items: flex-start; }
.article-body h2 { font-size: 1.5rem; font-weight: 900; color: var(--navy); margin: 36px 0 14px; letter-spacing: -0.3px; padding-bottom: 10px; border-bottom: 2px solid var(--teal); display: inline-block; }
.article-body h3 { font-size: 1.1rem; font-weight: 800; color: var(--navy); margin: 24px 0 10px; }
.article-body p { color: var(--muted); line-height: 1.8; margin-bottom: 16px; font-size: 0.95rem; }
.article-body ul { list-style: none; margin: 14px 0 18px 0; }
.article-body ul li { display: flex; gap: 10px; color: var(--muted); font-size: 0.92rem; padding: 5px 0; }
.article-body ul li::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--teal); flex-shrink: 0; margin-top: 8px; }

.sidebar { position: sticky; top: 80px; }
.sbox { background: #fff; border-radius: var(--radius); padding: 26px; border: 1.5px solid var(--gray); margin-bottom: 22px; }
.sbox-title { font-size: 0.92rem; font-weight: 800; color: var(--navy); margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--teal); }
.sdl-btn { display: flex; flex-direction: column; gap: 10px; }
.sdl-btn button { width: 100%; text-align: center; justify-content: center; }
.stoc { list-style: none; }
.stoc li { padding: 5px 0; border-bottom: 1px solid var(--gray); }
.stoc li:last-child { border-bottom: none; }
.stoc a { font-size: 0.88rem; color: var(--muted); transition: color 0.2s; }
.stoc a:hover { color: var(--teal); }
.sstat { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.sstat-item { background: linear-gradient(135deg, rgba(10,191,142,0.06), rgba(10,191,142,0.12)); border-radius: 10px; padding: 14px; text-align: center; }
.sstat-num { font-size: 1.3rem; font-weight: 900; color: var(--teal); display: block; }
.sstat-lbl { font-size: 0.72rem; color: var(--muted); }
.side-security { background: rgba(10,191,142,0.06); border: 1px solid rgba(10,191,142,0.2); border-radius: var(--radius); padding: 18px 20px; font-size: 0.82rem; color: var(--muted); line-height: 1.65; }
.side-security strong { color: var(--teal); display: block; margin-bottom: 6px; }

.inline-cta { background: linear-gradient(90deg, rgba(10,191,142,0.1), rgba(245,166,35,0.08)); border: 1.5px solid rgba(10,191,142,0.2); border-radius: var(--radius); padding: 28px 32px; display: flex; align-items: center; justify-content: space-between; gap: 20px; margin: 32px 0; flex-wrap: wrap; }
.inline-cta-title { font-size: 1.08rem; font-weight: 800; color: var(--navy); margin-bottom: 4px; }
.inline-cta-desc { font-size: 0.87rem; color: var(--muted); }

/* ── FOOTER ── */
.site-footer { background: var(--navy); padding: 52px 0 32px; border-top: 1px solid rgba(10,191,142,0.15); }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.1rem; color: #fff; margin-bottom: 24px; }
.footer-brand em { color: var(--teal); font-style: normal; }
.footer-security { display: flex; align-items: center; gap: 10px; background: rgba(10,191,142,0.08); border: 1px solid rgba(10,191,142,0.2); border-radius: 10px; padding: 14px 18px; margin-bottom: 20px; color: rgba(255,255,255,0.75); font-size: 0.87rem; }
.footer-security svg { flex-shrink: 0; color: var(--teal); }
.footer-note { font-size: 0.8rem; color: rgba(255,255,255,0.35); line-height: 1.65; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-graphic { width: 340px; }
  .article-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}
@media (max-width: 768px) {
  .feat-grid { grid-template-columns: 1fr 1fr; }
  .plat-row { grid-template-columns: 1fr 1fr; }
  .rev-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .deep-row { grid-template-columns: 1fr; gap: 36px; }
  .deep-row.rev .deep-visual { order: 0; }
  .dl-specs-grid { grid-template-columns: 1fr 1fr; }
  .other-plats { grid-template-columns: 1fr; }
  .req-grid { grid-template-columns: 1fr; }
  .hero-inner { padding: 64px 28px 56px; }
  .nav-list { display: none; }
  .dl-main-box { padding: 30px 22px; }
}
@media (max-width: 480px) {
  .feat-grid { grid-template-columns: 1fr; }
  .plat-row { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .cta-banner { padding: 40px 24px; }
  .dl-specs-grid { grid-template-columns: 1fr; }
  .inline-cta { flex-direction: column; }
}