/* =========================================
   Coral Bento / Warm Workspace Theme
   WPS Office Download Landing Site
   Colors: Coral #f05a28 | Slate #334155 | Amber #f59e0b | White #ffffff | Light #f8f7f5
   ========================================= */

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: .4; } }
@keyframes shimmer { 0% { background-position: -200% center; } 100% { background-position: 200% center; } }

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #1e293b;
  background: #fff;
  line-height: 1.6;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---- Layout ---- */
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 24px; border-radius: 8px; font-size: .95rem;
  font-weight: 600; cursor: pointer; border: none; transition: all .2s;
  line-height: 1;
}
.btn-coral { background: #f05a28; color: #fff; }
.btn-coral:hover { background: #d94e20; }
.btn-slate { background: #334155; color: #fff; }
.btn-slate:hover { background: #1e293b; }
.btn-amber { background: #f59e0b; color: #fff; }
.btn-amber:hover { background: #d97706; }
.btn-outline { background: transparent; color: #f05a28; border: 2px solid #f05a28; }
.btn-outline:hover { background: #f05a28; color: #fff; }
.btn-outline-w { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.5); }
.btn-outline-w:hover { background: rgba(255,255,255,.1); border-color: #fff; }
.btn-ghost { background: transparent; color: #64748b; }
.btn-ghost:hover { color: #f05a28; }
.btn-white { background: #fff; color: #f05a28; }
.btn-white:hover { background: #fef2ec; }
.btn-lg { padding: 15px 32px; font-size: 1.05rem; border-radius: 10px; }
.btn-sm { padding: 8px 18px; font-size: .85rem; border-radius: 6px; }
button.btn { font-family: inherit; }

/* ---- Top Navigation ---- */
.topnav {
  position: sticky; top: 0; z-index: 200;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #f1ede9;
}
.nav-inner {
  display: flex; align-items: center; gap: 0;
  max-width: 1160px; margin: 0 auto; padding: 0 24px;
  height: 64px;
}
.nav-brand { display: flex; align-items: center; gap: 8px; margin-right: auto; }
.nav-brand-ico {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, #f05a28 0%, #f59e0b 100%);
  display: flex; align-items: center; justify-content: center;
}
.nav-brand-ico svg { width: 18px; height: 18px; }
.nav-brand-name { font-size: 1.1rem; font-weight: 700; color: #1e293b; }
.nav-brand-name span { color: #f05a28; }
.nav-menu { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-link {
  padding: 7px 16px; border-radius: 6px; font-size: .92rem;
  color: #64748b; font-weight: 500; transition: all .2s;
}
.nav-link:hover { color: #1e293b; background: #f8f7f5; }
.nav-link.active {
  color: #f05a28; background: #fef2ec; font-weight: 600;
}
.nav-cta { margin-left: 8px; }
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  padding: 6px; color: #334155;
}

/* ---- Sections ---- */
.sec { padding: 80px 0; }
.sec-light { background: #f8f7f5; }
.sec-slate { background: #1e293b; color: #e2e8f0; }
.sec-coral { background: linear-gradient(135deg, #f05a28 0%, #f59e0b 100%); color: #fff; }
.sec-head { text-align: center; margin-bottom: 56px; }
.sec-label {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px; border-radius: 20px; font-size: .8rem;
  font-weight: 600; margin-bottom: 16px; letter-spacing: .04em; text-transform: uppercase;
}
.sec-label-coral { background: #fef2ec; color: #f05a28; }
.sec-label-amber { background: #fefce8; color: #d97706; }
.sec-label-slate { background: #f1f5f9; color: #334155; }
.sec-label-white { background: rgba(255,255,255,.2); color: #fff; }
.sec-label-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; animation: pulse-dot 2s infinite; }
.sec-title { font-size: 2.25rem; font-weight: 800; line-height: 1.2; color: #1e293b; margin-bottom: 12px; }
.sec-title-light { color: #fff; }
.sec-sub { font-size: 1.05rem; color: #64748b; max-width: 560px; margin: 0 auto; }
.sec-sub-light { color: rgba(255,255,255,.8); }

/* ---- Hero ---- */
.hero {
  background: #1e293b;
  overflow: hidden; position: relative;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(240,90,40,.18) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(245,158,11,.12) 0%, transparent 50%);
}
.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: center; max-width: 1160px; margin: 0 auto;
  padding: 90px 24px 80px;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(240,90,40,.15); border: 1px solid rgba(240,90,40,.3);
  color: #ff9266; padding: 5px 12px; border-radius: 20px;
  font-size: .82rem; font-weight: 600; margin-bottom: 24px; letter-spacing: .04em;
}
.hero-tag-dot { width: 6px; height: 6px; border-radius: 50%; background: #f05a28; animation: pulse-dot 1.5s infinite; }
.hero-h1 { font-size: 3rem; font-weight: 900; line-height: 1.1; color: #fff; margin-bottom: 20px; }
.hero-h1 .hl { color: #f05a28; }
.hero-h1 .hl2 { color: #f59e0b; }
.hero-p { font-size: 1.1rem; color: #94a3b8; margin-bottom: 32px; line-height: 1.7; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-badges { display: flex; gap: 20px; flex-wrap: wrap; }
.hero-badge { display: flex; align-items: center; gap: 6px; color: #94a3b8; font-size: .85rem; }
.hero-badge svg { color: #f05a28; }

/* Hero Visual - Bento mockup */
.hero-visual { position: relative; }
.hero-bento {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.hb-card {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
  border-radius: 16px; padding: 20px; backdrop-filter: blur(8px);
}
.hb-card.span2 { grid-column: span 2; }
.hb-card-top { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.hb-card-ico {
  width: 36px; height: 36px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.hb-ico-coral { background: rgba(240,90,40,.2); color: #f05a28; }
.hb-ico-amber { background: rgba(245,158,11,.2); color: #f59e0b; }
.hb-ico-sky { background: rgba(14,165,233,.2); color: #0ea5e9; }
.hb-ico-green { background: rgba(34,197,94,.2); color: #22c55e; }
.hb-card-ico svg { width: 18px; height: 18px; }
.hb-card-label { font-size: .8rem; color: #94a3b8; margin-bottom: 2px; }
.hb-card-val { font-size: 1.5rem; font-weight: 800; color: #fff; }
.hb-card-sub { font-size: .78rem; color: #64748b; margin-top: 6px; }
.hb-bars { display: flex; flex-direction: column; gap: 6px; margin-top: 4px; }
.hb-bar-row { display: flex; align-items: center; gap: 8px; }
.hb-bar-name { font-size: .75rem; color: #94a3b8; width: 40px; flex-shrink: 0; }
.hb-bar-track { flex: 1; height: 6px; background: rgba(255,255,255,.1); border-radius: 3px; overflow: hidden; }
.hb-bar-fill { height: 100%; border-radius: 3px; }
.hb-fill-coral { background: #f05a28; width: 85%; }
.hb-fill-amber { background: #f59e0b; width: 92%; }
.hb-fill-sky { background: #0ea5e9; width: 78%; }
.hb-bar-pct { font-size: .72rem; color: #64748b; width: 28px; text-align: right; }

/* ---- Stats Strip ---- */
.stats-strip { background: #fff; border-bottom: 1px solid #f1ede9; padding: 32px 0; }
.stats-row { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 24px; }
.stat-item { text-align: center; }
.stat-num { font-size: 2rem; font-weight: 900; }
.stat-num-coral { color: #f05a28; }
.stat-num-amber { color: #f59e0b; }
.stat-num-slate { color: #334155; }
.stat-lbl { font-size: .82rem; color: #64748b; margin-top: 2px; }

/* ---- Bento Feature Grid ---- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.bento-cell {
  border: 1px solid #e8e3de; border-radius: 16px; padding: 28px;
  background: #fff; transition: all .2s; position: relative; overflow: hidden;
}
.bento-cell::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.bento-cell:hover { box-shadow: 0 8px 30px rgba(0,0,0,.08); transform: translateY(-2px); }
.bento-cell:hover::before { transform: scaleX(1); }
.bc-coral::before { background: linear-gradient(90deg, #f05a28, #f59e0b); }
.bc-amber::before { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.bc-slate::before { background: linear-gradient(90deg, #334155, #64748b); }
.bc-sky::before { background: linear-gradient(90deg, #0ea5e9, #38bdf8); }
.bc-green::before { background: linear-gradient(90deg, #22c55e, #86efac); }
.bc-violet::before { background: linear-gradient(90deg, #8b5cf6, #a78bfa); }
.bc-rose::before { background: linear-gradient(90deg, #f43f5e, #fb7185); }
.bc-cyan::before { background: linear-gradient(90deg, #06b6d4, #67e8f9); }
.bc-lime::before { background: linear-gradient(90deg, #84cc16, #bef264); }
.bento-cell.bento-wide { grid-column: span 2; }
.bento-ico {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}
.bi-coral { background: #fef2ec; color: #f05a28; }
.bi-amber { background: #fefce8; color: #d97706; }
.bi-slate { background: #f1f5f9; color: #334155; }
.bi-sky { background: #f0f9ff; color: #0ea5e9; }
.bi-green { background: #f0fdf4; color: #22c55e; }
.bi-violet { background: #faf5ff; color: #8b5cf6; }
.bi-rose { background: #fff1f2; color: #f43f5e; }
.bento-ico svg { width: 24px; height: 24px; }
.bento-name { font-size: 1rem; font-weight: 700; color: #1e293b; margin-bottom: 8px; }
.bento-desc { font-size: .88rem; color: #64748b; line-height: 1.6; }

/* ---- Module Pillars ---- */
.pillar-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.pillar-card {
  border-radius: 16px; padding: 28px 24px; text-align: center;
  border: 1px solid #e8e3de; background: #fff; transition: all .2s;
}
.pillar-card:hover { box-shadow: 0 10px 32px rgba(0,0,0,.08); transform: translateY(-3px); }
.pc-coral { border-top: 4px solid #f05a28; }
.pc-amber { border-top: 4px solid #f59e0b; }
.pc-sky { border-top: 4px solid #0ea5e9; }
.pc-green { border-top: 4px solid #22c55e; }
.pillar-ico {
  width: 56px; height: 56px; border-radius: 16px; margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
}
.pi-coral { background: #fef2ec; color: #f05a28; }
.pi-amber { background: #fefce8; color: #d97706; }
.pi-sky { background: #f0f9ff; color: #0ea5e9; }
.pi-green { background: #f0fdf4; color: #22c55e; }
.pillar-ico svg { width: 28px; height: 28px; }
.pillar-name { font-size: 1.05rem; font-weight: 700; color: #1e293b; margin-bottom: 8px; }
.pillar-desc { font-size: .85rem; color: #64748b; line-height: 1.6; margin-bottom: 16px; }
.pillar-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.pillar-tag { font-size: .75rem; padding: 3px 10px; border-radius: 20px; background: #f1f5f9; color: #64748b; }

/* ---- Spotlight Rows (deep features) ---- */
.spot-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px;
  align-items: center; padding: 64px 0;
  border-bottom: 1px solid #f1ede9;
}
.spot-row:last-child { border-bottom: none; }
.spot-row.flip .spot-info { order: 2; }
.spot-row.flip .spot-panel { order: 1; }
.spot-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 20px; font-size: .78rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 16px;
}
.sb-coral { background: #fef2ec; color: #f05a28; }
.sb-amber { background: #fefce8; color: #d97706; }
.sb-sky { background: #f0f9ff; color: #0ea5e9; }
.sb-green { background: #f0fdf4; color: #22c55e; }
.spot-title { font-size: 1.75rem; font-weight: 800; color: #1e293b; margin-bottom: 14px; line-height: 1.25; }
.spot-desc { font-size: .95rem; color: #64748b; line-height: 1.75; margin-bottom: 20px; }
.spot-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.spot-list li { display: flex; align-items: flex-start; gap: 10px; font-size: .9rem; color: #475569; }
.spot-list li svg { flex-shrink: 0; margin-top: 2px; }
/* Data panels */
.spot-panel {
  background: #f8f7f5; border-radius: 20px; padding: 28px;
  border: 1px solid #e8e3de;
}
.sp-panel-title { font-size: .85rem; font-weight: 600; color: #94a3b8; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 20px; }
.sp-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.sp-row:last-child { margin-bottom: 0; }
.sp-label { font-size: .85rem; color: #475569; width: 100px; flex-shrink: 0; }
.sp-track { flex: 1; height: 8px; background: #e2e8f0; border-radius: 4px; overflow: hidden; }
.sp-fill { height: 100%; border-radius: 4px; }
.spf-coral { background: linear-gradient(90deg, #f05a28, #f59e0b); }
.spf-amber { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.spf-sky { background: linear-gradient(90deg, #0ea5e9, #38bdf8); }
.spf-green { background: linear-gradient(90deg, #22c55e, #86efac); }
.sp-val { font-size: .85rem; font-weight: 700; color: #1e293b; width: 36px; text-align: right; }
.sp-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.sp-stat { background: #fff; border-radius: 10px; padding: 14px; text-align: center; border: 1px solid #e8e3de; }
.sp-stat-num { font-size: 1.4rem; font-weight: 800; }
.sp-stat-coral { color: #f05a28; }
.sp-stat-amber { color: #f59e0b; }
.sp-stat-sky { color: #0ea5e9; }
.sp-stat-green { color: #22c55e; }
.sp-stat-lbl { font-size: .75rem; color: #64748b; margin-top: 2px; }

/* ---- Platform Grid ---- */
.plat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.plat-card {
  border: 2px solid #e8e3de; border-radius: 16px; padding: 28px 20px; text-align: center;
  background: #fff; transition: all .2s; position: relative;
}
.plat-card:hover { border-color: #f05a28; box-shadow: 0 8px 24px rgba(240,90,40,.1); }
.plat-card.featured { border-color: #f05a28; background: #fff; }
.plat-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: #f05a28; color: #fff; font-size: .72rem; font-weight: 700;
  padding: 3px 12px; border-radius: 20px; white-space: nowrap; text-transform: uppercase;
}
.plat-ico { width: 48px; height: 48px; margin: 0 auto 14px; }
.plat-ico svg { width: 48px; height: 48px; }
.plat-name { font-size: .98rem; font-weight: 700; color: #1e293b; margin-bottom: 4px; }
.plat-ver { font-size: .82rem; color: #94a3b8; margin-bottom: 16px; }
.plat-btn { width: 100%; }

/* ---- Reviews ---- */
.rev-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.rev-card {
  background: #fff; border: 1px solid #e8e3de; border-radius: 16px; padding: 24px;
  transition: box-shadow .2s;
}
.rev-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,.08); }
.rev-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.rev-avatar {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1rem; color: #fff;
}
.av-coral { background: linear-gradient(135deg, #f05a28, #f59e0b); }
.av-amber { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.av-slate { background: linear-gradient(135deg, #334155, #64748b); }
.av-sky { background: linear-gradient(135deg, #0ea5e9, #38bdf8); }
.av-green { background: linear-gradient(135deg, #22c55e, #86efac); }
.av-violet { background: linear-gradient(135deg, #8b5cf6, #a78bfa); }
.rev-meta { flex: 1; }
.rev-name { font-size: .92rem; font-weight: 700; color: #1e293b; }
.rev-role { font-size: .8rem; color: #94a3b8; }
.rev-stars { display: flex; gap: 2px; color: #f59e0b; font-size: .85rem; margin-bottom: 10px; }
.rev-text { font-size: .88rem; color: #475569; line-height: 1.65; }

/* ---- Comparison Table ---- */
.cmp-wrap { overflow-x: auto; }
.cmp-table {
  width: 100%; border-collapse: collapse; font-size: .9rem;
}
.cmp-table th, .cmp-table td {
  padding: 14px 18px; text-align: center;
  border-bottom: 1px solid #f1ede9;
}
.cmp-table th { font-weight: 700; background: #f8f7f5; color: #334155; font-size: .82rem; text-transform: uppercase; letter-spacing: .04em; }
.cmp-table td:first-child { text-align: left; font-weight: 500; color: #334155; }
.cmp-hl { background: #fef7f4; }
.cmp-hl th:first-child + th { color: #f05a28; background: #fef2ec; }
.yes { color: #22c55e; font-size: 1.1rem; }
.no { color: #94a3b8; font-size: 1.1rem; }
.part { color: #f59e0b; font-size: .82rem; font-weight: 600; }
.cmp-table tr:hover td { background: #fafafa; }

/* ---- FAQ ---- */
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item {
  border: 1px solid #e8e3de; border-radius: 12px; overflow: hidden;
  background: #fff;
}
.faq-item.open { border-color: #f05a28; }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 22px; cursor: pointer; font-weight: 600;
  color: #1e293b; font-size: .95rem; user-select: none;
}
.faq-q:hover { background: #fef7f4; }
.faq-item.open .faq-q { background: #fef2ec; color: #f05a28; }
.faq-chevron {
  width: 20px; height: 20px; flex-shrink: 0; transition: transform .25s;
  color: #94a3b8;
}
.faq-item.open .faq-chevron { transform: rotate(180deg); color: #f05a28; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.open .faq-a { max-height: 400px; }
.faq-a-inner { padding: 0 22px 18px; font-size: .9rem; color: #64748b; line-height: 1.75; border-top: 1px solid #f1ede9; margin-top: 0; padding-top: 14px; }

/* ---- CTA Banner ---- */
.cta-banner {
  background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #1e293b 100%);
  color: #fff; text-align: center; padding: 80px 24px;
  position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(240,90,40,.2) 0%, transparent 60%);
}
.cta-banner .wrap { position: relative; }
.cta-eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(240,90,40,.15); border: 1px solid rgba(240,90,40,.3);
  color: #ff9266; padding: 5px 14px; border-radius: 20px;
  font-size: .8rem; font-weight: 600; margin-bottom: 20px;
}
.cta-h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 14px; }
.cta-p { color: rgba(255,255,255,.7); margin-bottom: 32px; font-size: 1.05rem; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---- Download Page ---- */
.dl-hero {
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  color: #fff; padding: 80px 0 64px; text-align: center;
}
.dl-hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(240,90,40,.15); border: 1px solid rgba(240,90,40,.3);
  color: #ff9266; padding: 5px 14px; border-radius: 20px;
  font-size: .8rem; font-weight: 600; margin-bottom: 20px;
}
.dl-hero-tag-dot { width: 6px; height: 6px; border-radius: 50%; background: #f05a28; animation: pulse-dot 1.5s infinite; }
.dl-hero-title { font-size: 2.4rem; font-weight: 900; margin-bottom: 14px; }
.dl-hero-sub { color: rgba(255,255,255,.7); font-size: 1.05rem; max-width: 540px; margin: 0 auto; }

/* Windows main download card */
.dl-win-wrap { max-width: 680px; margin: 0 auto; }
.dl-win-card {
  border: 2px solid #f05a28; border-radius: 20px; overflow: hidden;
  background: #fff; box-shadow: 0 12px 40px rgba(240,90,40,.15);
}
.dl-win-top {
  background: linear-gradient(135deg, #f05a28, #f59e0b);
  padding: 28px; display: flex; align-items: center; gap: 20px;
}
.dl-win-ico { width: 56px; height: 56px; flex-shrink: 0; }
.dl-win-ico svg { width: 56px; height: 56px; }
.dl-win-info { flex: 1; }
.dl-win-name { font-size: 1.35rem; font-weight: 800; color: #fff; margin-bottom: 4px; }
.dl-win-meta { font-size: .85rem; color: rgba(255,255,255,.8); }
.dl-win-body { padding: 28px; }
.dl-specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 24px; }
.dl-spec { background: #f8f7f5; border-radius: 10px; padding: 14px; text-align: center; }
.dl-spec-label { font-size: .75rem; color: #94a3b8; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 4px; }
.dl-spec-val { font-size: .92rem; font-weight: 700; color: #1e293b; }
.dl-sec-badge {
  display: flex; align-items: center; gap: 8px;
  background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: 8px;
  padding: 10px 16px; margin-bottom: 20px;
  font-size: .85rem; color: #16a34a; font-weight: 500;
}
.dl-win-btns { display: flex; gap: 12px; }
.dl-win-btns .btn { flex: 1; justify-content: center; }

/* Other platforms */
.op-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.op-card {
  border: 1px solid #e8e3de; border-radius: 16px; padding: 24px;
  background: #fff; text-align: center; transition: all .2s;
}
.op-card:hover { border-color: #f05a28; box-shadow: 0 6px 20px rgba(240,90,40,.1); }
.op-ico { width: 48px; height: 48px; margin: 0 auto 12px; }
.op-ico svg { width: 48px; height: 48px; }
.op-name { font-size: 1rem; font-weight: 700; color: #1e293b; margin-bottom: 4px; }
.op-ver { font-size: .82rem; color: #94a3b8; margin-bottom: 8px; }
.op-steps { list-style: none; text-align: left; margin-bottom: 16px; display: flex; flex-direction: column; gap: 6px; }
.op-steps li { display: flex; align-items: flex-start; gap: 8px; font-size: .82rem; color: #64748b; }
.op-step-num {
  width: 20px; height: 20px; border-radius: 50%; background: #fef2ec;
  color: #f05a28; font-size: .7rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;
}

/* Guide Grid */
.guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.guide-col-title {
  font-size: 1.15rem; font-weight: 800; color: #1e293b; margin-bottom: 24px;
  display: flex; align-items: center; gap: 10px;
}
.gct-dot { width: 10px; height: 10px; border-radius: 50%; }
.gct-coral { background: #f05a28; }
.gct-amber { background: #f59e0b; }
.guide-steps { display: flex; flex-direction: column; gap: 16px; }
.gstep { display: flex; gap: 14px; align-items: flex-start; }
.gstep-num {
  width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .88rem; color: #fff;
}
.gn-coral { background: #f05a28; }
.gn-amber { background: #f59e0b; }
.gstep-body { padding-top: 4px; }
.gstep-title { font-size: .92rem; font-weight: 700; color: #1e293b; margin-bottom: 3px; }
.gstep-desc { font-size: .84rem; color: #64748b; line-height: 1.6; }

/* System Requirements */
.req-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.req-card { background: #f8f7f5; border: 1px solid #e8e3de; border-radius: 14px; padding: 22px; }
.req-ico { width: 40px; height: 40px; border-radius: 10px; background: #fff; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; border: 1px solid #e8e3de; }
.req-ico svg { width: 20px; height: 20px; color: #f05a28; }
.req-title { font-size: .82rem; font-weight: 700; color: #94a3b8; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px; }
.req-val { font-size: .9rem; color: #1e293b; font-weight: 500; line-height: 1.5; }

/* 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; padding: 0 20px; }
.ver-dot { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; margin-top: 5px; }
.vd-coral { background: #f05a28; }
.vd-amber { background: #f59e0b; }
.vd-sky { background: #0ea5e9; }
.vd-green { background: #22c55e; }
.vd-violet { background: #8b5cf6; }
.ver-line { width: 2px; background: #e8e3de; flex: 1; margin: 4px 0; }
.ver-body { padding-bottom: 28px; flex: 1; }
.ver-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; flex-wrap: wrap; }
.ver-num { font-size: .95rem; font-weight: 800; color: #1e293b; }
.ver-tag { font-size: .72rem; font-weight: 700; padding: 2px 10px; border-radius: 20px; }
.vt-stable { background: #f0fdf4; color: #16a34a; }
.vt-lts { background: #fef2ec; color: #f05a28; }
.vt-beta { background: #fefce8; color: #d97706; }
.ver-date { font-size: .8rem; color: #94a3b8; margin-left: auto; }
.ver-desc { font-size: .88rem; color: #64748b; line-height: 1.6; }

/* Security banner */
.sec-banner {
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  border: 1px solid #bbf7d0; border-radius: 16px;
  padding: 24px 28px; display: flex; align-items: flex-start; gap: 16px;
}
.sec-banner-ico { flex-shrink: 0; color: #16a34a; margin-top: 2px; }
.sec-banner-ico svg { width: 28px; height: 28px; }
.sec-banner-title { font-size: 1rem; font-weight: 700; color: #166534; margin-bottom: 4px; }
.sec-banner-desc { font-size: .88rem; color: #16a34a; line-height: 1.6; }

/* ---- Article / zh-cn ---- */
.art-hero { background: linear-gradient(135deg, #1e293b, #334155); color: #fff; padding: 72px 0 56px; }
.art-hero-inner { text-align: center; }
.art-hero-crumb { font-size: .82rem; color: rgba(255,255,255,.5); margin-bottom: 16px; }
.art-hero-crumb a { color: rgba(255,255,255,.5); }
.art-hero-crumb a:hover { color: #fff; }
.art-hero-title { font-size: 2.2rem; font-weight: 900; margin-bottom: 14px; }
.art-hero-sub { color: rgba(255,255,255,.7); font-size: 1rem; max-width: 560px; margin: 0 auto 28px; }
.kw-strip { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.kw { padding: 4px 12px; border-radius: 20px; font-size: .78rem; font-weight: 500; background: rgba(255,255,255,.1); color: rgba(255,255,255,.7); border: 1px solid rgba(255,255,255,.15); }
.kw:hover { background: rgba(240,90,40,.2); color: #ff9266; border-color: rgba(240,90,40,.3); }

.art-layout { display: grid; grid-template-columns: 1fr 300px; gap: 48px; align-items: start; }
.art-body { min-width: 0; }
.art-body h2 { font-size: 1.45rem; font-weight: 800; color: #1e293b; margin: 36px 0 14px; padding-bottom: 10px; border-bottom: 2px solid #f1ede9; }
.art-body h3 { font-size: 1.15rem; font-weight: 700; color: #334155; margin: 24px 0 10px; }
.art-body p { font-size: .95rem; color: #475569; line-height: 1.8; margin-bottom: 16px; }
.art-body ul { padding-left: 0; list-style: none; display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.art-body ul li { display: flex; align-items: flex-start; gap: 10px; font-size: .93rem; color: #475569; line-height: 1.65; }
.art-body ul li::before { content: '▸'; color: #f05a28; flex-shrink: 0; margin-top: 1px; font-size: .85rem; }
.art-body strong { color: #1e293b; }

/* Inline CTA */
.inline-cta {
  border-radius: 14px; padding: 24px 28px; margin: 28px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.inline-cta-coral { background: #fef2ec; border: 1px solid rgba(240,90,40,.2); }
.inline-cta-amber { background: #fefce8; border: 1px solid rgba(245,158,11,.2); }
.inline-cta-slate { background: #f1f5f9; border: 1px solid #e2e8f0; }
.inline-cta-title { font-size: 1rem; font-weight: 700; color: #1e293b; margin-bottom: 4px; }
.inline-cta-desc { font-size: .85rem; color: #64748b; }

/* Tips grid */
.tips-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tip-card { background: #fff; border: 1px solid #e8e3de; border-radius: 14px; padding: 22px; }
.tip-num {
  width: 30px; height: 30px; border-radius: 8px; background: #fef2ec; color: #f05a28;
  font-size: .85rem; font-weight: 800; display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px;
}
.tip-title { font-size: .92rem; font-weight: 700; color: #1e293b; margin-bottom: 6px; }
.tip-desc { font-size: .84rem; color: #64748b; line-height: 1.6; }

/* Comparison table in article */
.art-cmp-wrap { overflow-x: auto; margin: 20px 0; }
.art-cmp-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.art-cmp-table th, .art-cmp-table td { padding: 12px 16px; border: 1px solid #e8e3de; text-align: center; }
.art-cmp-table th { background: #f8f7f5; font-weight: 700; color: #334155; }
.art-cmp-table td:first-child { text-align: left; font-weight: 500; }
.art-cmp-hl { background: #fef7f4; font-weight: 700; color: #f05a28; }

/* Sidebar */
.sidebar { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 80px; }
.sbox { background: #fff; border: 1px solid #e8e3de; border-radius: 16px; padding: 22px; }
.sbox-title { font-size: .85rem; font-weight: 800; color: #94a3b8; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 1px solid #f1ede9; }
.sdl-btn {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px; border-radius: 10px; border: none; cursor: pointer;
  font-family: inherit; width: 100%; text-align: left; margin-bottom: 8px;
  transition: all .2s;
}
.sdl-btn:last-child { margin-bottom: 0; }
.sdl-btn.primary { background: #f05a28; color: #fff; }
.sdl-btn.primary:hover { background: #d94e20; }
.sdl-btn.secondary { background: #f8f7f5; color: #334155; border: 1px solid #e8e3de; }
.sdl-btn.secondary:hover { background: #f1ede9; }
.sdl-btn-ico { width: 32px; height: 32px; border-radius: 8px; background: rgba(255,255,255,.2); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.sdl-btn.secondary .sdl-btn-ico { background: #fff; border: 1px solid #e8e3de; color: #334155; }
.sdl-btn-ico svg { width: 16px; height: 16px; }
.sdl-btn-info { flex: 1; }
.sdl-btn-name { font-size: .88rem; font-weight: 700; }
.sdl-btn-ver { font-size: .75rem; opacity: .7; margin-top: 1px; }
.stoc { display: flex; flex-direction: column; gap: 4px; }
.stoc a { font-size: .84rem; color: #64748b; padding: 5px 8px; border-radius: 6px; transition: all .2s; border-left: 2px solid transparent; }
.stoc a:hover { color: #f05a28; border-left-color: #f05a28; background: #fef7f4; padding-left: 12px; }
.sstat { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sstat-item { text-align: center; background: #f8f7f5; border-radius: 10px; padding: 12px; }
.sstat-num { font-size: 1.15rem; font-weight: 800; color: #f05a28; }
.sstat-lbl { font-size: .72rem; color: #94a3b8; margin-top: 2px; }
.side-security {
  background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: 10px;
  padding: 12px 14px; font-size: .8rem; color: #16a34a; line-height: 1.5;
}

/* ---- Footer ---- */
.site-footer {
  background: #1e293b; color: #94a3b8; padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,.05);
}
.footer-inner {
  display: flex; flex-direction: column; align-items: center;
  gap: 12px; text-align: center;
}
.footer-brand { display: flex; align-items: center; gap: 8px; }
.footer-brand-ico {
  width: 28px; height: 28px; border-radius: 6px;
  background: linear-gradient(135deg, #f05a28, #f59e0b);
  display: flex; align-items: center; justify-content: center;
}
.footer-brand-ico svg { width: 14px; height: 14px; color: #fff; }
.footer-brand-name { font-size: .95rem; font-weight: 700; color: #e2e8f0; }
.footer-security {
  display: flex; align-items: center; gap: 6px;
  font-size: .8rem; color: #64748b;
  background: rgba(255,255,255,.04); padding: 8px 16px; border-radius: 8px;
  border: 1px solid rgba(255,255,255,.06);
}
.footer-security svg { color: #22c55e; flex-shrink: 0; }
.footer-note { font-size: .75rem; color: #475569; text-align: center; max-width: 640px; line-height: 1.6; }

/* ---- Responsive ---- */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-bento { display: none; }
  .bento-grid { grid-template-columns: 1fr 1fr; }
  .bento-cell.bento-wide { grid-column: span 2; }
  .pillar-grid { grid-template-columns: 1fr 1fr; }
  .spot-row { grid-template-columns: 1fr; gap: 32px; }
  .spot-row.flip .spot-info { order: 1; }
  .spot-row.flip .spot-panel { order: 2; }
  .plat-grid { grid-template-columns: 1fr 1fr; }
  .rev-grid { grid-template-columns: 1fr 1fr; }
  .guide-grid { grid-template-columns: 1fr; gap: 32px; }
  .req-grid { grid-template-columns: 1fr 1fr; }
  .art-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .tips-grid { grid-template-columns: 1fr 1fr; }
  .op-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .hero-h1 { font-size: 2.1rem; }
  .sec-title { font-size: 1.75rem; }
  .bento-grid { grid-template-columns: 1fr; }
  .bento-cell.bento-wide { grid-column: span 1; }
  .pillar-grid { grid-template-columns: 1fr; }
  .plat-grid { grid-template-columns: 1fr 1fr; }
  .rev-grid { grid-template-columns: 1fr; }
  .nav-menu { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: #fff; padding: 12px 16px; border-bottom: 1px solid #f1ede9; box-shadow: 0 8px 20px rgba(0,0,0,.08); }
  .nav-menu.show { display: flex; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .topnav { position: relative; }
  .stats-row { gap: 16px; }
  .stats-strip { padding: 20px 0; }
  .dl-specs { grid-template-columns: 1fr 1fr; }
  .req-grid { grid-template-columns: 1fr 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .cta-h2 { font-size: 1.65rem; }
  .sec { padding: 56px 0; }
}