/* ============================================================
   Aurora Studio — WPS4 Design System
   Palette: Deep Violet #5b21b6 | Electric Purple #7c3aed
             Soft Indigo #e0e7ff | Amber #f59e0b | White #fff
   ============================================================ */

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

:root {
  --v1: #5b21b6;
  --v2: #7c3aed;
  --v3: #a78bfa;
  --v4: #ede9fe;
  --v5: #f5f3ff;
  --indigo: #4f46e5;
  --amber: #f59e0b;
  --amber-d: #d97706;
  --rose: #f43f5e;
  --teal: #0d9488;
  --sky: #0ea5e9;
  --emerald: #10b981;
  --dark: #0f0a1e;
  --dark2: #1a1033;
  --ink: #1e1b4b;
  --gray: #6b7280;
  --gray-l: #f9fafb;
  --white: #ffffff;
  --border: #e5e7eb;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(91,33,182,0.10);
  --shadow-lg: 0 12px 48px rgba(91,33,182,0.18);
}

html { scroll-behavior: smooth; }
body { font-family: "PingFang SC","Microsoft YaHei","Segoe UI",sans-serif; color: #1e1b4b; background: #fff; line-height: 1.7; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes floatY { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes fadeUp { from { opacity:0; transform:translateY(24px); } to { opacity:1; transform:translateY(0); } }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes glow { 0%,100% { box-shadow:0 0 20px rgba(124,58,237,0.4); } 50% { box-shadow:0 0 40px rgba(124,58,237,0.7); } }

/* ── Utilities ── */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.sec { padding: 80px 0; }
.sec-sm { padding: 48px 0; }
.sec-white { background: #fff; }
.sec-soft { background: var(--v5); }
.sec-indigo { background: var(--v4); }
.sec-dark { background: var(--dark); color: #fff; }
.sec-dark2 { background: var(--dark2); color: #fff; }
.sec-grad { background: linear-gradient(135deg, var(--v1) 0%, var(--v2) 60%, var(--indigo) 100%); color: #fff; }

.sec-head { text-align: center; margin-bottom: 56px; }
.sec-eyebrow { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--v2); margin-bottom: 12px; }
.sec-eyebrow-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--amber); display: inline-block; }
.sec-title { font-size: clamp(26px, 4vw, 40px); font-weight: 800; color: var(--ink); line-height: 1.25; }
.sec-title-light { color: #fff; }
.sec-sub { font-size: 17px; color: var(--gray); margin-top: 12px; max-width: 600px; margin-left: auto; margin-right: auto; }
.sec-sub-light { color: rgba(255,255,255,0.75); }
.hl { color: var(--v2); }
.hl2 { color: var(--amber); }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: 50px; font-size: 15px; font-weight: 700; transition: all .2s; cursor: pointer; }
.btn-lg { padding: 15px 36px; font-size: 16px; }
.btn-sm { padding: 8px 20px; font-size: 13px; }
.btn-violet { background: linear-gradient(135deg, var(--v2), var(--indigo)); color: #fff; box-shadow: 0 4px 20px rgba(124,58,237,0.35); }
.btn-violet:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(124,58,237,0.45); }
.btn-amber { background: linear-gradient(135deg, var(--amber), var(--amber-d)); color: #fff; box-shadow: 0 4px 16px rgba(245,158,11,0.35); }
.btn-amber:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.45); }
.btn-outline { background: transparent; border: 2px solid var(--v2); color: var(--v2); }
.btn-outline:hover { background: var(--v4); }
.btn-outline-w { background: transparent; border: 2px solid rgba(255,255,255,0.5); color: #fff; }
.btn-outline-w:hover { background: rgba(255,255,255,0.1); }
.btn-white { background: #fff; color: var(--v1); box-shadow: var(--shadow); }
.btn-white:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-ghost { background: transparent; color: var(--v2); }
.btn-ghost:hover { background: var(--v5); }

/* ── Nav ── */
.site-nav { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.95); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav-brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--v1); }
.nav-brand-icon { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, var(--v2), var(--indigo)); display: flex; align-items: center; justify-content: center; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link { padding: 7px 16px; border-radius: 50px; font-size: 14px; font-weight: 600; color: var(--gray); transition: all .2s; }
.nav-link:hover { color: var(--v1); background: var(--v5); }
.nav-link.active { background: var(--v2); color: #fff; }
.nav-dl { margin-left: 12px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: .2s; }
.nav-mobile { display: none; background: #fff; border-top: 1px solid var(--border); padding: 12px 24px 20px; }
.nav-mobile.show { display: block; }
.nav-mobile .nav-link { display: block; padding: 10px 12px; border-radius: var(--radius-sm); }
.nav-mobile .nav-dl { display: block; margin: 12px 0 0; }

/* ── Hero ── */
.hero { background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 40%, #2e1065 80%, var(--v1) 100%); padding: 100px 0 80px; overflow: hidden; position: relative; }
.hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse 80% 60% at 70% 40%, rgba(124,58,237,0.25) 0%, transparent 70%); pointer-events: none; }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; position: relative; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; background: rgba(167,139,250,0.15); border: 1px solid rgba(167,139,250,0.3); border-radius: 50px; padding: 5px 14px; font-size: 13px; font-weight: 600; color: var(--v3); margin-bottom: 20px; }
.hero-eyebrow-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--amber); animation: glow 2s ease-in-out infinite; }
.hero-h1 { font-size: clamp(32px, 5vw, 56px); font-weight: 900; line-height: 1.15; color: #fff; margin-bottom: 20px; }
.hero-hl { background: linear-gradient(90deg, var(--v3), var(--amber)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-p { font-size: 17px; color: rgba(255,255,255,0.72); margin-bottom: 32px; max-width: 480px; line-height: 1.8; }
.hero-btns { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 36px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-trust-item { display: flex; align-items: center; gap: 6px; font-size: 13px; color: rgba(255,255,255,0.55); }
.hero-trust-item svg { color: var(--amber); }
.hero-vis { animation: floatY 4s ease-in-out infinite; }
.hero-card { background: rgba(255,255,255,0.07); backdrop-filter: blur(16px); border: 1px solid rgba(255,255,255,0.12); border-radius: 20px; padding: 28px; }
.hc-header { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.hc-dots { display: flex; gap: 5px; }
.hc-dot { width: 10px; height: 10px; border-radius: 50%; }
.hc-dot.r { background: #f87171; }
.hc-dot.y { background: #fbbf24; }
.hc-dot.g { background: #34d399; }
.hc-title { font-size: 12px; color: rgba(255,255,255,0.4); margin-left: 8px; }
.hc-mods { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.hc-mod { background: rgba(255,255,255,0.06); border-radius: 12px; padding: 16px 14px; border: 1px solid rgba(255,255,255,0.08); }
.hc-mod-icon { width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 10px; }
.hc-mod-icon.v { background: rgba(124,58,237,0.4); }
.hc-mod-icon.a { background: rgba(245,158,11,0.4); }
.hc-mod-icon.t { background: rgba(13,148,136,0.4); }
.hc-mod-icon.r { background: rgba(244,63,94,0.4); }
.hc-mod-name { font-size: 13px; font-weight: 700; color: #fff; }
.hc-mod-desc { font-size: 11px; color: rgba(255,255,255,0.45); margin-top: 3px; }
.hc-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 10px; }
.hc-stat { background: rgba(255,255,255,0.05); border-radius: 10px; padding: 12px 10px; text-align: center; }
.hc-stat-num { font-size: 18px; font-weight: 800; color: var(--v3); }
.hc-stat-lbl { font-size: 10px; color: rgba(255,255,255,0.4); margin-top: 2px; }

/* ── Stats Band ── */
.stats-band { background: var(--v1); padding: 40px 0; }
.stats-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 0; }
.stat-item { text-align: center; padding: 0 40px; border-right: 1px solid rgba(255,255,255,0.15); }
.stat-item:last-child { border-right: none; }
.counter-num { font-size: 40px; font-weight: 900; color: #fff; display: block; }
.stat-suffix { font-size: 22px; }
.stat-lbl { font-size: 14px; color: rgba(255,255,255,0.65); margin-top: 4px; }

/* ── Feature Cards ── */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feat-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 24px; transition: all .25s; position: relative; overflow: hidden; }
.feat-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--bar-color, var(--v2)); transform: scaleX(0); transform-origin: left; transition: transform .3s; border-radius: var(--radius) var(--radius) 0 0; }
.feat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feat-card:hover::before { transform: scaleX(1); }
.feat-card.fc-v { --bar-color: var(--v2); }
.feat-card.fc-a { --bar-color: var(--amber); }
.feat-card.fc-t { --bar-color: var(--teal); }
.feat-card.fc-r { --bar-color: var(--rose); }
.feat-card.fc-s { --bar-color: var(--sky); }
.feat-card.fc-e { --bar-color: var(--emerald); }
.feat-icon { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.feat-icon.fi-v { background: var(--v4); color: var(--v2); }
.feat-icon.fi-a { background: #fef3c7; color: var(--amber-d); }
.feat-icon.fi-t { background: #ccfbf1; color: var(--teal); }
.feat-icon.fi-r { background: #ffe4e6; color: var(--rose); }
.feat-icon.fi-s { background: #e0f2fe; color: var(--sky); }
.feat-icon.fi-e { background: #d1fae5; color: var(--emerald); }
.feat-name { font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.feat-desc { font-size: 14px; color: var(--gray); line-height: 1.7; }

/* ── Module Tabs ── */
.mtab-section { background: var(--v5); padding: 80px 0; }
.mtab-nav { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 40px; background: #fff; border-radius: 50px; padding: 6px; display: inline-flex; box-shadow: 0 2px 12px rgba(91,33,182,0.08); }
.mtab-nav-wrap { text-align: center; }
.mtab-btn { padding: 10px 24px; border-radius: 50px; font-size: 14px; font-weight: 600; color: var(--gray); transition: all .2s; }
.mtab-btn.active { background: var(--v2); color: #fff; box-shadow: 0 4px 14px rgba(124,58,237,0.35); }
.mtab-panel { display: none; }
.mtab-panel.active { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; animation: fadeUp .3s ease; }
.mtab-info { display: flex; flex-direction: column; }
.mtab-badge { display: inline-block; background: var(--v4); color: var(--v2); font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 50px; margin-bottom: 12px; }
.mtab-h3 { font-size: 28px; font-weight: 800; color: var(--ink); margin-bottom: 14px; }
.mtab-p { font-size: 15px; color: var(--gray); line-height: 1.8; margin-bottom: 20px; }
.mtab-list { display: flex; flex-direction: column; gap: 10px; }
.mtab-list-item { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--ink); }
.mtab-list-dot { width: 20px; height: 20px; border-radius: 50%; background: var(--v2); color: #fff; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 2px; }
.mtab-vis { background: #fff; border-radius: 20px; padding: 28px; box-shadow: var(--shadow-lg); }
.mtab-vis-title { font-size: 13px; font-weight: 700; color: var(--gray); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.05em; }
.mv-bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.mv-bar-label { font-size: 12px; color: var(--gray); width: 80px; flex-shrink: 0; }
.mv-bar-track { flex: 1; height: 8px; background: var(--v5); border-radius: 4px; overflow: hidden; }
.mv-bar-fill { height: 100%; border-radius: 4px; transition: width 1s ease; }
.mvf-v { background: linear-gradient(90deg, var(--v2), var(--v3)); }
.mvf-a { background: linear-gradient(90deg, var(--amber), #fcd34d); }
.mvf-t { background: linear-gradient(90deg, var(--teal), #5eead4); }
.mvf-i { background: linear-gradient(90deg, var(--indigo), #818cf8); }
.mv-bar-val { font-size: 12px; font-weight: 700; color: var(--v2); width: 36px; text-align: right; flex-shrink: 0; }
.mv-stat-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 20px; }
.mv-stat { background: var(--v5); border-radius: 12px; padding: 14px; text-align: center; }
.mv-stat-num { font-size: 22px; font-weight: 800; color: var(--v1); }
.mv-stat-lbl { font-size: 11px; color: var(--gray); margin-top: 2px; }

/* ── Platform Grid ── */
.plat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.plat-card { border: 2px solid var(--border); border-radius: var(--radius); padding: 28px 20px; text-align: center; background: #fff; transition: all .25s; }
.plat-card:hover { border-color: var(--v3); box-shadow: var(--shadow); }
.plat-card.featured { border-color: var(--v2); box-shadow: 0 0 0 1px var(--v2), var(--shadow); }
.plat-badge { display: inline-block; background: var(--v2); color: #fff; font-size: 11px; font-weight: 700; padding: 2px 10px; border-radius: 50px; margin-bottom: 12px; }
.plat-icon { width: 60px; height: 60px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; }
.plat-icon.pi-v { background: linear-gradient(135deg, var(--v2), var(--indigo)); }
.plat-icon.pi-a { background: linear-gradient(135deg, #374151, #111827); }
.plat-icon.pi-i { background: linear-gradient(135deg, #0ea5e9, #6366f1); }
.plat-icon.pi-g { background: linear-gradient(135deg, #10b981, #0891b2); }
.plat-name { font-size: 16px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.plat-ver { font-size: 12px; color: var(--gray); margin-bottom: 16px; }
.plat-desc { font-size: 13px; color: var(--gray); margin-bottom: 18px; line-height: 1.6; }
.plat-btn { width: 100%; }

/* ── Deep Rows ── */
.deep-row { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; padding: 64px 0; border-bottom: 1px solid var(--border); }
.deep-row:last-child { border-bottom: none; }
.deep-row.flip { direction: rtl; }
.deep-row.flip > * { direction: ltr; }
.deep-chip { display: inline-flex; align-items: center; gap: 6px; border-radius: 50px; padding: 4px 14px; font-size: 12px; font-weight: 700; margin-bottom: 14px; }
.dc-v { background: var(--v4); color: var(--v2); }
.dc-a { background: #fef3c7; color: var(--amber-d); }
.dc-t { background: #ccfbf1; color: var(--teal); }
.dc-r { background: #ffe4e6; color: var(--rose); }
.deep-h3 { font-size: 30px; font-weight: 800; color: var(--ink); margin-bottom: 14px; }
.deep-p { font-size: 15px; color: var(--gray); line-height: 1.8; margin-bottom: 20px; }
.deep-list { display: flex; flex-direction: column; gap: 10px; }
.deep-list-item { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--ink); line-height: 1.6; }
.dl-dot { width: 22px; height: 22px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 2px; }
.dl-dot.v { background: var(--v4); color: var(--v2); }
.dl-dot.a { background: #fef3c7; color: var(--amber-d); }
.dl-dot.t { background: #ccfbf1; color: var(--teal); }
.deep-vis { background: var(--v5); border-radius: 20px; padding: 28px; }
.dv-title { font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 18px; }
.dv-bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.dv-bar-label { font-size: 12px; color: var(--gray); width: 72px; flex-shrink: 0; }
.dv-bar-track { flex: 1; height: 10px; background: #fff; border-radius: 5px; overflow: hidden; }
.dv-bar-fill { height: 100%; border-radius: 5px; }
.dvf-v { background: linear-gradient(90deg, var(--v2), var(--v3)); }
.dvf-a { background: linear-gradient(90deg, var(--amber), #fcd34d); }
.dvf-t { background: linear-gradient(90deg, var(--teal), #5eead4); }
.dvf-i { background: linear-gradient(90deg, var(--indigo), #818cf8); }
.dv-bar-val { font-size: 12px; font-weight: 700; color: var(--v1); width: 36px; text-align: right; }
.dv-stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 18px; }
.dv-stat { background: #fff; border-radius: 12px; padding: 14px; text-align: center; }
.dv-stat-num { font-size: 20px; font-weight: 800; }
.c-v { color: var(--v1); }
.c-a { color: var(--amber-d); }
.c-t { color: var(--teal); }
.dv-stat-lbl { font-size: 11px; color: var(--gray); margin-top: 2px; }

/* ── Reviews ── */
.rev-marquee-wrap { overflow: hidden; position: relative; }
.rev-marquee-wrap::before, .rev-marquee-wrap::after { content: ""; position: absolute; top: 0; bottom: 0; width: 80px; z-index: 2; pointer-events: none; }
.rev-marquee-wrap::before { left: 0; background: linear-gradient(90deg, var(--v5), transparent); }
.rev-marquee-wrap::after { right: 0; background: linear-gradient(-90deg, var(--v5), transparent); }
.rev-marquee-track { display: flex; gap: 20px; width: max-content; animation: marquee 30s linear infinite; }
.rev-marquee-track:hover { animation-play-state: paused; }
.rev-card { background: #fff; border-radius: var(--radius); padding: 24px; min-width: 300px; box-shadow: var(--shadow); }
.rev-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.rev-avatar { width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 700; color: #fff; flex-shrink: 0; }
.av-v { background: linear-gradient(135deg, var(--v2), var(--indigo)); }
.av-a { background: linear-gradient(135deg, var(--amber), var(--amber-d)); }
.av-t { background: linear-gradient(135deg, var(--teal), #0891b2); }
.av-r { background: linear-gradient(135deg, var(--rose), #fb7185); }
.av-s { background: linear-gradient(135deg, var(--sky), #38bdf8); }
.av-e { background: linear-gradient(135deg, var(--emerald), #34d399); }
.rev-name { font-size: 15px; font-weight: 700; color: var(--ink); }
.rev-role { font-size: 12px; color: var(--gray); }
.rev-stars { display: flex; gap: 2px; margin-bottom: 10px; }
.rev-stars svg { color: var(--amber); }
.rev-text { font-size: 14px; color: var(--gray); line-height: 1.7; }

/* ── Comparison Table ── */
.cmp-wrap { overflow-x: auto; }
.cmp-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.cmp-table th { padding: 14px 20px; background: var(--v1); color: #fff; font-weight: 700; text-align: center; }
.cmp-table th:first-child { text-align: left; border-radius: var(--radius-sm) 0 0 0; }
.cmp-table th:last-child { border-radius: 0 var(--radius-sm) 0 0; }
.cmp-table td { padding: 13px 20px; border-bottom: 1px solid var(--border); text-align: center; color: var(--ink); }
.cmp-table td:first-child { text-align: left; font-weight: 600; }
.cmp-table tr:hover td { background: var(--v5); }
.cmp-hl { font-weight: 800; color: var(--v2) !important; }
.yes { color: var(--emerald); font-weight: 700; }
.no { color: #9ca3af; }
.part { color: var(--amber-d); font-weight: 600; }

/* ── FAQ ── */
.faq-list { display: flex; flex-direction: column; gap: 10px; max-width: 820px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; transition: box-shadow .2s; }
.faq-item.open { box-shadow: var(--shadow); border-color: var(--v3); }
.faq-q { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; cursor: pointer; font-size: 15px; font-weight: 600; color: var(--ink); background: #fff; gap: 12px; }
.faq-chevron { width: 20px; height: 20px; flex-shrink: 0; color: var(--gray); transition: transform .25s; }
.faq-item.open .faq-chevron { transform: rotate(180deg); color: var(--v2); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; background: var(--v5); }
.faq-item.open .faq-a { max-height: 500px; }
.faq-a-inner { padding: 16px 20px; font-size: 14px; color: var(--gray); line-height: 1.8; }

/* ── CTA Banner ── */
.cta-banner { background: linear-gradient(135deg, var(--v1) 0%, var(--v2) 60%, var(--indigo) 100%); padding: 72px 0; text-align: center; }
.cta-eyebrow { display: inline-block; background: rgba(255,255,255,0.15); color: rgba(255,255,255,0.85); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 4px 14px; border-radius: 50px; margin-bottom: 14px; }
.cta-h2 { font-size: clamp(26px, 4vw, 40px); font-weight: 900; color: #fff; margin-bottom: 12px; }
.cta-p { font-size: 17px; color: rgba(255,255,255,0.72); margin-bottom: 32px; }
.cta-btns { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

/* ── Download Hero ── */
.dl-hero { background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 50%, #2e1065 100%); padding: 72px 0 56px; text-align: center; }
.dl-hero-chip { display: inline-flex; align-items: center; gap: 6px; background: rgba(167,139,250,0.15); border: 1px solid rgba(167,139,250,0.3); border-radius: 50px; padding: 5px 14px; font-size: 13px; font-weight: 600; color: var(--v3); margin-bottom: 16px; }
.dl-hero-chip-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--amber); }
.dl-hero-title { font-size: clamp(28px, 4vw, 44px); font-weight: 900; color: #fff; margin-bottom: 12px; }
.dl-hero-sub { font-size: 17px; color: rgba(255,255,255,0.65); }

/* ── Main Download Card ── */
.dl-main-wrap { max-width: 680px; margin: 0 auto; padding: 0 24px; }
.dl-main-card { background: #fff; border-radius: 24px; overflow: hidden; box-shadow: 0 20px 60px rgba(91,33,182,0.18); margin-top: -32px; position: relative; z-index: 2; }
.dl-win-top { height: 6px; background: linear-gradient(90deg, var(--v2), var(--indigo), var(--amber)); }
.dl-win-head { display: flex; align-items: center; gap: 16px; padding: 28px 32px 20px; border-bottom: 1px solid var(--border); }
.dl-win-icon { width: 56px; height: 56px; border-radius: 16px; background: linear-gradient(135deg, var(--v2), var(--indigo)); display: flex; align-items: center; justify-content: center; }
.dl-win-name { font-size: 22px; font-weight: 800; color: var(--ink); }
.dl-win-meta { font-size: 13px; color: var(--gray); margin-top: 2px; }
.dl-specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); }
.dl-spec { background: #fff; padding: 16px 20px; }
.dl-spec-label { font-size: 11px; color: var(--gray); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px; }
.dl-spec-val { font-size: 14px; font-weight: 700; color: var(--ink); }
.dl-sec-badge { display: flex; align-items: center; gap: 8px; padding: 14px 32px; background: #f0fdf4; border-bottom: 1px solid #d1fae5; font-size: 13px; color: #065f46; font-weight: 600; }
.dl-win-btns { display: flex; gap: 12px; padding: 24px 32px; }
.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 { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 24px; }
.op-icon { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.op-name { font-size: 18px; font-weight: 800; color: var(--ink); margin-bottom: 4px; }
.op-ver { font-size: 12px; color: var(--gray); margin-bottom: 16px; }
.op-steps { margin-bottom: 20px; }
.op-step { display: flex; align-items: flex-start; gap: 10px; font-size: 13px; color: var(--gray); margin-bottom: 8px; line-height: 1.6; }
.op-step-n { width: 22px; height: 22px; border-radius: 50%; background: var(--v4); color: var(--v2); font-size: 11px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }

/* ── Guide ── */
.guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.guide-col-title { font-size: 18px; font-weight: 800; color: var(--ink); margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
.gct-dot { width: 10px; height: 10px; border-radius: 50%; }
.gct-v { background: var(--v2); }
.gct-a { background: var(--amber); }
.gstep { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 18px; }
.gstep-num { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 800; flex-shrink: 0; margin-top: 2px; }
.gsn-v { background: var(--v2); color: #fff; }
.gsn-a { background: var(--amber); color: #fff; }
.gstep-body { flex: 1; }
.gstep-title { font-size: 15px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.gstep-desc { font-size: 13px; color: var(--gray); line-height: 1.7; }

/* ── System Requirements ── */
.req-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.req-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 18px; }
.req-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--v4); display: flex; align-items: center; justify-content: center; margin-bottom: 12px; color: var(--v2); }
.req-title { font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.req-val { font-size: 13px; color: var(--gray); line-height: 1.7; }

/* ── Version Timeline ── */
.ver-list { max-width: 720px; margin: 0 auto; }
.ver-item { display: flex; gap: 20px; margin-bottom: 28px; }
.ver-dot-col { display: flex; flex-direction: column; align-items: center; }
.ver-dot { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; margin-top: 4px; }
.vd-v { background: var(--v2); box-shadow: 0 0 0 4px rgba(124,58,237,0.2); }
.vd-a { background: var(--amber); box-shadow: 0 0 0 4px rgba(245,158,11,0.2); }
.vd-t { background: var(--teal); box-shadow: 0 0 0 4px rgba(13,148,136,0.2); }
.vd-r { background: var(--rose); box-shadow: 0 0 0 4px rgba(244,63,94,0.2); }
.vd-i { background: var(--indigo); box-shadow: 0 0 0 4px rgba(79,70,229,0.2); }
.ver-line { flex: 1; width: 2px; background: var(--border); margin-top: 4px; margin-bottom: -14px; }
.ver-body { flex: 1; }
.ver-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; flex-wrap: wrap; }
.ver-num { font-size: 16px; font-weight: 800; color: var(--ink); }
.ver-tag { font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 50px; }
.vt-stable { background: #d1fae5; color: #065f46; }
.vt-lts { background: var(--v4); color: var(--v1); }
.vt-beta { background: #fef3c7; color: var(--amber-d); }
.ver-date { font-size: 12px; color: var(--gray); }
.ver-desc { font-size: 14px; color: var(--gray); line-height: 1.7; }

/* ── Security Banner ── */
.sec-banner { display: flex; align-items: center; gap: 16px; background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: var(--radius); padding: 20px 24px; }
.sec-banner-icon { width: 44px; height: 44px; border-radius: 12px; background: #d1fae5; display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--emerald); }
.sec-banner-title { font-size: 16px; font-weight: 700; color: #065f46; }
.sec-banner-desc { font-size: 13px; color: #047857; margin-top: 2px; }

/* ── Article / zh-cn ── */
.art-hero { background: linear-gradient(135deg, var(--dark2), var(--v1)); padding: 72px 0 56px; }
.art-hero-inner { max-width: 760px; }
.art-hero-crumb { font-size: 13px; color: rgba(255,255,255,0.5); margin-bottom: 12px; }
.art-hero-crumb a { color: rgba(255,255,255,0.5); }
.art-hero-crumb span { color: rgba(255,255,255,0.8); }
.art-hero-title { font-size: clamp(26px, 4vw, 42px); font-weight: 900; color: #fff; margin-bottom: 12px; }
.art-hero-sub { font-size: 16px; color: rgba(255,255,255,0.65); line-height: 1.8; }
.kw-strip { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.kw { background: rgba(255,255,255,0.12); color: rgba(255,255,255,0.8); font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 50px; border: 1px solid rgba(255,255,255,0.15); }
.art-layout { display: grid; grid-template-columns: 1fr 320px; gap: 40px; align-items: start; }
.art-body { background: #fff; border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow); }
.art-body h2 { font-size: 22px; font-weight: 800; color: var(--ink); margin: 32px 0 14px; padding-top: 8px; border-top: 2px solid var(--v4); }
.art-body h2:first-child { margin-top: 0; border-top: none; padding-top: 0; }
.art-body h3 { font-size: 17px; font-weight: 700; color: var(--v1); margin: 20px 0 10px; }
.art-body p { font-size: 15px; color: #374151; line-height: 1.9; margin-bottom: 14px; }
.art-body ul, .art-body ol { margin: 10px 0 14px 20px; }
.art-body li { font-size: 15px; color: #374151; line-height: 1.8; margin-bottom: 6px; }
.inline-cta { border-radius: var(--radius); padding: 24px 28px; margin: 28px 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.inline-cta.ic-v { background: var(--v4); border-left: 4px solid var(--v2); }
.inline-cta.ic-a { background: #fef3c7; border-left: 4px solid var(--amber); }
.inline-cta.ic-t { background: #ccfbf1; border-left: 4px solid var(--teal); }
.inline-cta-title { font-size: 16px; font-weight: 700; color: var(--ink); }
.inline-cta-desc { font-size: 13px; color: var(--gray); margin-top: 4px; }
.tips-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 16px 0; }
.tip-card { background: var(--v5); border-radius: var(--radius-sm); padding: 16px 18px; }
.tip-num { font-size: 22px; font-weight: 900; color: var(--v3); display: block; margin-bottom: 6px; }
.tip-title { font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.tip-desc { font-size: 13px; color: var(--gray); line-height: 1.6; }

/* ── Sidebar ── */
.sidebar { position: sticky; top: 80px; display: flex; flex-direction: column; gap: 20px; }
.sbox { background: #fff; border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.sbox-title { font-size: 14px; font-weight: 800; color: var(--ink); margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--v4); }
.sdl-btn { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: #fff; width: 100%; text-align: left; margin-bottom: 10px; transition: all .2s; cursor: pointer; font-family: inherit; }
.sdl-btn:hover { border-color: var(--v3); background: var(--v5); }
.sdl-btn.primary { border-color: var(--v2); background: var(--v2); color: #fff; }
.sdl-btn.primary:hover { background: var(--v1); }
.sdl-btn-icon { width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.sdl-btn.primary .sdl-btn-icon { background: rgba(255,255,255,0.2); }
.sdl-btn-name { font-size: 14px; font-weight: 700; }
.sdl-btn-ver { font-size: 11px; opacity: 0.65; }
.stoc a { display: block; font-size: 13px; color: var(--gray); padding: 5px 0; border-bottom: 1px solid var(--border); transition: color .2s; }
.stoc a:hover { color: var(--v2); }
.stoc a:last-child { border-bottom: none; }
.sstat { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sstat-item { text-align: center; background: var(--v5); border-radius: var(--radius-sm); padding: 12px 8px; }
.sstat-num { font-size: 20px; font-weight: 800; color: var(--v1); display: block; }
.sstat-lbl { font-size: 11px; color: var(--gray); margin-top: 2px; }
.side-security { display: flex; align-items: flex-start; gap: 10px; padding: 14px; background: #f0fdf4; border-radius: var(--radius-sm); font-size: 12px; color: #047857; line-height: 1.6; }

/* ── Footer ── */
.site-footer { background: var(--dark); padding: 40px 0; text-align: center; }
.footer-inner { max-width: 700px; margin: 0 auto; padding: 0 24px; }
.footer-brand { display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 16px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.footer-security { font-size: 13px; color: rgba(255,255,255,0.5); margin-bottom: 8px; }
.footer-security::before { content: "✅ "; }
.footer-note { font-size: 12px; color: rgba(255,255,255,0.3); line-height: 1.7; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .plat-grid { grid-template-columns: repeat(2, 1fr); }
  .req-grid { grid-template-columns: repeat(2, 1fr); }
  .art-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}
@media (max-width: 768px) {
  .nav-links, .nav-dl { display: none; }
  .nav-toggle { display: flex; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-vis { display: none; }
  .mtab-panel.active { grid-template-columns: 1fr; }
  .deep-row { grid-template-columns: 1fr; gap: 32px; }
  .deep-row.flip { direction: ltr; }
  .guide-grid { grid-template-columns: 1fr; }
  .op-grid { grid-template-columns: 1fr; }
  .feat-grid { grid-template-columns: 1fr; }
  .plat-grid { grid-template-columns: 1fr 1fr; }
  .stats-row { gap: 20px; }
  .stat-item { border-right: none; padding: 12px 20px; }
  .dl-specs { grid-template-columns: 1fr 1fr; }
  .dl-win-btns { flex-direction: column; }
  .tips-grid { grid-template-columns: 1fr; }
  .mv-stat-row { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .plat-grid { grid-template-columns: 1fr; }
  .req-grid { grid-template-columns: 1fr 1fr; }
  .dv-stat-grid { grid-template-columns: 1fr; }
  .sec { padding: 56px 0; }
  .hero { padding: 72px 0 56px; }
}