/* ============================================================
   WPS Office — Twilight Press Studio
   Theme: Vermillion red + Burnt orange + Petrol teal on cream
   ============================================================ */

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

:root {
  --cream: #fbf7f0;
  --ivory: #fffdf9;
  --paper: #f5efe5;
  --paper2: #efe8da;
  --red: #dc2626;
  --red-soft: #fef2f2;
  --red-dark: #991b1b;
  --orange: #ea580c;
  --orange-soft: #fff7ed;
  --teal: #0d9488;
  --teal-soft: #ccfbf1;
  --gold: #ca8a04;
  --ink: #1c1917;
  --ink2: #292524;
  --ink3: #44403c;
  --text: #1c1917;
  --text-soft: #57534e;
  --text-mute: #78716c;
  --border: #e7e5e4;
  --border-soft: #f5f5f4;
  --shadow-sm: 0 1px 3px rgba(28,25,23,.08);
  --shadow-md: 0 6px 16px rgba(28,25,23,.10);
  --shadow-lg: 0 14px 36px rgba(28,25,23,.12);
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 22px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 78px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
  background: var(--cream);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; }

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   Navigation
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 253, 249, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  gap: 20px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--red) 0%, var(--red-dark) 100%);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 18px;
  letter-spacing: -0.05em;
  box-shadow: 0 4px 10px rgba(220, 38, 38, .28);
}

.nav-brand-text {
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.nav-brand-sub {
  color: var(--text-soft);
  font-weight: 600;
  margin-left: 4px;
  font-size: 13px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-soft);
  border-radius: 999px;
  transition: color .2s, background .2s;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--ink);
  background: var(--paper);
}

.nav-link.active {
  color: #fff;
  background: var(--red);
  box-shadow: 0 2px 8px rgba(220, 38, 38, .28);
}

.nav-cta {
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 600;
  background: var(--ink);
  color: #fff;
  border-radius: 999px;
  transition: background .2s, transform .2s, box-shadow .2s;
  flex-shrink: 0;
}

.nav-cta:hover {
  background: var(--red);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(220, 38, 38, .25);
}

.nav-burger {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--paper);
  align-items: center;
  justify-content: center;
}

.nav-burger svg { width: 22px; height: 22px; color: var(--ink); }

.nav-mob {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 8px 16px 16px;
  flex-direction: column;
  gap: 4px;
  box-shadow: var(--shadow-md);
}

.nav-mob.show { display: flex; }

.nav-mob .nav-link {
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 15px;
}

.nav-mob .nav-cta {
  margin-top: 8px;
  text-align: center;
  display: block;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 12px;
  transition: transform .2s, box-shadow .2s, background .2s, color .2s, border-color .2s;
  white-space: nowrap;
}

.btn:disabled { opacity: .7; cursor: not-allowed; }

.btn-lg { padding: 15px 28px; font-size: 16px; border-radius: 14px; }
.btn-sm { padding: 8px 16px; font-size: 13px; border-radius: 10px; }

.btn-red {
  background: var(--red);
  color: #fff;
  box-shadow: 0 6px 20px rgba(220, 38, 38, .25);
}
.btn-red:hover { background: var(--red-dark); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(220, 38, 38, .32); }

.btn-orange {
  background: var(--orange);
  color: #fff;
  box-shadow: 0 6px 20px rgba(234, 88, 12, .25);
}
.btn-orange:hover { background: #c2410c; transform: translateY(-2px); }

.btn-ink {
  background: var(--ink);
  color: #fff;
}
.btn-ink:hover { background: var(--red); transform: translateY(-2px); }

.btn-outline {
  background: #fff;
  color: var(--ink);
  border: 1.5px solid var(--ink);
}
.btn-outline:hover { background: var(--ink); color: #fff; }

.btn-outline-w {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, .4);
}
.btn-outline-w:hover { background: #fff; color: var(--ink); border-color: #fff; }

.btn-white {
  background: #fff;
  color: var(--red);
  box-shadow: 0 6px 20px rgba(0, 0, 0, .12);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0, 0, 0, .18); }

.btn-ghost {
  background: var(--paper);
  color: var(--ink);
}
.btn-ghost:hover { background: var(--paper2); }

.btn svg { width: 18px; height: 18px; }

/* ============================================================
   Section bases
   ============================================================ */
.sec {
  padding: 84px 0;
  position: relative;
}

.sec-sm { padding: 56px 0; }

.sec-cream { background: var(--cream); }
.sec-paper { background: var(--paper); }
.sec-ivory { background: var(--ivory); }
.sec-ink { background: var(--ink); color: #fff; }
.sec-ink2 { background: var(--ink2); color: #fff; }

.sec-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}

.sec-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--red-soft);
  color: var(--red);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.sec-chip.c-orange { background: var(--orange-soft); color: var(--orange); }
.sec-chip.c-teal { background: var(--teal-soft); color: var(--teal); }
.sec-chip.c-gold { background: #fef9c3; color: var(--gold); }
.sec-chip.c-white { background: rgba(255,255,255,.10); color: #fff; }

.sec-chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.sec-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 14px;
}

.sec-title-light { color: #fff; }

.sec-sub {
  font-size: 16px;
  color: var(--text-soft);
  line-height: 1.7;
}

.sec-sub-light { color: rgba(255, 255, 255, .72); }

.hl { color: var(--red); }
.hl-o { color: var(--orange); }
.hl-t { color: var(--teal); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding: 72px 0 84px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(800px 400px at 88% 12%, rgba(234,88,12,.10), transparent 60%),
    radial-gradient(700px 360px at 10% 90%, rgba(13,148,136,.08), transparent 60%),
    var(--cream);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(28,25,23,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28,25,23,.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  opacity: .6;
  mask-image: radial-gradient(800px 400px at 50% 30%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(800px 400px at 50% 30%, #000, transparent 75%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-text { position: relative; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}

.hero-eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(220, 38, 38, .12);
}

.hero-h1 {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 20px;
}

.hero-h1 .hl {
  background: linear-gradient(120deg, var(--red) 0%, var(--orange) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-p {
  font-size: 17px;
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 28px;
  max-width: 540px;
}

.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 26px;
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-soft);
  font-weight: 500;
}

.hero-trust-item svg {
  width: 18px;
  height: 18px;
  color: var(--teal);
  flex-shrink: 0;
}

/* Hero visual: paper / document mockup */
.hero-vis {
  position: relative;
}

.hero-doc {
  position: relative;
  background: #fff;
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.hd-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.hd-dots { display: flex; gap: 5px; margin-right: 12px; }
.hd-dot { width: 11px; height: 11px; border-radius: 50%; }
.hd-dot.r { background: #ef4444; }
.hd-dot.y { background: #f59e0b; }
.hd-dot.g { background: #10b981; }

.hd-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-soft);
  flex: 1;
}

.hd-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
}

.hd-tab {
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  background: var(--paper);
  color: var(--text-soft);
}

.hd-tab.on { background: var(--red); color: #fff; }

.hd-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.hd-card {
  background: var(--cream);
  border-radius: 10px;
  padding: 14px;
  border: 1px solid var(--border);
}

.hd-card-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #fff;
  margin-bottom: 10px;
}

.hd-card-icon.r { background: var(--red); }
.hd-card-icon.o { background: var(--orange); }
.hd-card-icon.t { background: var(--teal); }
.hd-card-icon.g { background: var(--gold); }

.hd-card-icon svg { width: 18px; height: 18px; }

.hd-card-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}

.hd-card-desc {
  font-size: 11px;
  color: var(--text-mute);
}

.hd-bars { margin-top: 14px; }

.hd-bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.hd-bar-lbl {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-soft);
  width: 56px;
}

.hd-bar-track {
  flex: 1;
  height: 6px;
  background: var(--paper);
  border-radius: 999px;
  overflow: hidden;
}

.hd-bar-fill {
  height: 100%;
  border-radius: 999px;
}

.hd-bar-fill.r { width: 88%; background: var(--red); }
.hd-bar-fill.o { width: 72%; background: var(--orange); }
.hd-bar-fill.t { width: 95%; background: var(--teal); }
.hd-bar-fill.g { width: 64%; background: var(--gold); }

.hd-bar-val {
  font-size: 11px;
  font-weight: 700;
  color: var(--ink);
  width: 38px;
  text-align: right;
}

/* Floating chips on hero doc */
.hero-chip-card {
  position: absolute;
  background: #fff;
  border-radius: 12px;
  padding: 10px 14px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
}

.hero-chip-card.fc-1 { top: -16px; right: -20px; }
.hero-chip-card.fc-2 { bottom: -18px; left: -22px; }

.hcc-ico {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #fff;
  flex-shrink: 0;
}

.hcc-ico.t { background: linear-gradient(135deg, var(--teal), #0e7490); }
.hcc-ico.o { background: linear-gradient(135deg, var(--orange), #c2410c); }

.hcc-ico svg { width: 18px; height: 18px; }

.hcc-text { line-height: 1.3; }

.hcc-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
}

.hcc-sub {
  font-size: 11px;
  color: var(--text-mute);
}

/* Stats strip */
.stats-strip {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  padding: 32px 0;
}

.stat-item { text-align: center; }

.stat-num {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.stat-num.c-red { color: var(--red); }
.stat-num.c-orange { color: var(--orange); }
.stat-num.c-teal { color: var(--teal); }
.stat-num.c-gold { color: var(--gold); }

.stat-lbl {
  font-size: 13px;
  color: var(--text-soft);
  margin-top: 4px;
  font-weight: 500;
}

/* ============================================================
   Features
   ============================================================ */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feat-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px 24px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  overflow: hidden;
}

.feat-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s;
}

.feat-card.fc-orange::before { background: var(--orange); }
.feat-card.fc-teal::before { background: var(--teal); }
.feat-card.fc-gold::before { background: var(--gold); }
.feat-card.fc-plum::before { background: #7c2d12; }
.feat-card.fc-rose::before { background: #e11d48; }

.feat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feat-card:hover::before { transform: scaleX(1); }

.feat-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #fff;
  margin-bottom: 18px;
  background: var(--red);
}

.feat-icon.fi-orange { background: var(--orange); }
.feat-icon.fi-teal { background: var(--teal); }
.feat-icon.fi-gold { background: var(--gold); }
.feat-icon.fi-plum { background: #7c2d12; }
.feat-icon.fi-rose { background: #e11d48; }

.feat-icon svg { width: 26px; height: 26px; }

.feat-name {
  font-size: 19px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 8px;
}

.feat-desc {
  font-size: 14.5px;
  color: var(--text-soft);
  line-height: 1.65;
}

.feat-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.feat-tag {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--paper);
  color: var(--text-soft);
}

/* Deep-dive rows */
.deep-stack {
  margin-top: 80px;
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.deep-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.deep-row.flip { direction: rtl; }
.deep-row.flip > * { direction: ltr; }

.deep-info { padding: 8px 0; }

.deep-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  margin-bottom: 14px;
}

.deep-chip.dc-red { background: var(--red-soft); color: var(--red); }
.deep-chip.dc-orange { background: var(--orange-soft); color: var(--orange); }
.deep-chip.dc-teal { background: var(--teal-soft); color: var(--teal); }
.deep-chip.dc-gold { background: #fef9c3; color: var(--gold); }

.deep-chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.deep-h3 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.deep-desc {
  font-size: 15.5px;
  color: var(--text-soft);
  line-height: 1.75;
  margin-bottom: 18px;
}

.deep-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.deep-list-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
  color: var(--ink);
  line-height: 1.55;
}

.deep-list-dot {
  width: 18px;
  height: 18px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  color: #fff;
  flex-shrink: 0;
  margin-top: 2px;
}

.deep-list-dot.dld-red { background: var(--red); }
.deep-list-dot.dld-orange { background: var(--orange); }
.deep-list-dot.dld-teal { background: var(--teal); }
.deep-list-dot.dld-gold { background: var(--gold); }

.deep-list-dot svg { width: 11px; height: 11px; }

.deep-list-item b { color: var(--ink); font-weight: 700; }

/* Deep visual */
.deep-vis {
  background: #fff;
  border-radius: 18px;
  padding: 22px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.dv-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-soft);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dv-title-tag {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--paper);
  color: var(--text-soft);
}

.dv-bar-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.dv-bar-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  width: 96px;
  flex-shrink: 0;
}

.dv-bar-track {
  flex: 1;
  height: 10px;
  background: var(--paper);
  border-radius: 999px;
  overflow: hidden;
}

.dv-bar-fill {
  height: 100%;
  border-radius: 999px;
}

.dvbf-red { background: linear-gradient(90deg, var(--red), #b91c1c); }
.dvbf-orange { background: linear-gradient(90deg, var(--orange), #c2410c); }
.dvbf-teal { background: linear-gradient(90deg, var(--teal), #0e7490); }
.dvbf-gold { background: linear-gradient(90deg, var(--gold), #a16207); }

.dv-bar-val {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  width: 48px;
  text-align: right;
}

.dv-stat-grid {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.dv-stat {
  text-align: center;
  padding: 10px;
  background: var(--cream);
  border-radius: 10px;
}

.dv-stat-num {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.1;
}

.dv-stat-num.c-red { color: var(--red); }
.dv-stat-num.c-orange { color: var(--orange); }
.dv-stat-num.c-teal { color: var(--teal); }
.dv-stat-num.c-gold { color: var(--gold); }

.dv-stat-lbl {
  font-size: 11px;
  color: var(--text-mute);
  margin-top: 2px;
  font-weight: 500;
}

/* ============================================================
   Platforms
   ============================================================ */
.plat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.plat-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px 24px;
  text-align: center;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}

.plat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.plat-card.featured {
  background: linear-gradient(180deg, #fff 0%, var(--red-soft) 100%);
  border-color: var(--red);
  box-shadow: 0 12px 32px rgba(220, 38, 38, .14);
}

.plat-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--red);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 999px;
  letter-spacing: .05em;
  box-shadow: 0 4px 12px rgba(220, 38, 38, .28);
}

.plat-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  margin: 8px auto 18px;
  display: grid;
  place-items: center;
  background: var(--cream);
  color: var(--ink);
  border: 1px solid var(--border);
}

.plat-card.featured .plat-icon {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
}

.plat-icon svg { width: 34px; height: 34px; }

.plat-name {
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 4px;
}

.plat-ver {
  font-size: 13px;
  color: var(--text-soft);
  font-weight: 500;
  margin-bottom: 8px;
}

.plat-req {
  font-size: 12.5px;
  color: var(--text-mute);
  line-height: 1.55;
  margin-bottom: 18px;
  min-height: 56px;
}

.plat-btn { width: 100%; }

/* ============================================================
   Reviews
   ============================================================ */
.rev-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.rev-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 26px 22px;
  transition: transform .25s, box-shadow .25s;
}

.rev-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.rev-stars {
  display: inline-flex;
  gap: 2px;
  color: var(--gold);
  margin-bottom: 12px;
}

.rev-stars svg { width: 16px; height: 16px; }

.rev-text {
  font-size: 14.5px;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 18px;
  min-height: 96px;
}

.rev-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.rev-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  flex-shrink: 0;
}

.rev-avatar.av-red { background: linear-gradient(135deg, var(--red), var(--red-dark)); }
.rev-avatar.av-orange { background: linear-gradient(135deg, var(--orange), #c2410c); }
.rev-avatar.av-teal { background: linear-gradient(135deg, var(--teal), #0e7490); }
.rev-avatar.av-gold { background: linear-gradient(135deg, var(--gold), #a16207); }
.rev-avatar.av-plum { background: linear-gradient(135deg, #7c2d12, #44403c); }
.rev-avatar.av-rose { background: linear-gradient(135deg, #e11d48, #be185d); }

.rev-meta { line-height: 1.4; }

.rev-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.rev-role {
  font-size: 12px;
  color: var(--text-mute);
}

/* ============================================================
   Security
   ============================================================ */
.sec-items {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}

.sec-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px;
  text-align: center;
  transition: transform .25s, box-shadow .25s;
}

.sec-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.sec-item-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  color: #fff;
}

.sec-item-icon.si-red { background: var(--red); }
.sec-item-icon.si-orange { background: var(--orange); }
.sec-item-icon.si-teal { background: var(--teal); }
.sec-item-icon.si-gold { background: var(--gold); }

.sec-item-icon svg { width: 26px; height: 26px; }

.sec-item-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 6px;
}

.sec-item-desc {
  font-size: 13.5px;
  color: var(--text-soft);
  line-height: 1.6;
}

/* Comparison table */
.cmp-wrap {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.cmp-table {
  width: 100%;
  border-collapse: collapse;
}

.cmp-table thead th {
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 18px 20px;
  text-align: left;
}

.cmp-table thead th.cmp-hl {
  background: var(--red);
  position: relative;
}

.cmp-table thead th.cmp-hl::after {
  content: "推荐";
  position: absolute;
  top: 4px;
  right: 12px;
  background: var(--gold);
  color: var(--ink);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
}

.cmp-table tbody td {
  padding: 14px 20px;
  font-size: 14px;
  color: var(--text);
  border-top: 1px solid var(--border-soft);
}

.cmp-table tbody tr:nth-child(even) { background: var(--cream); }

.cmp-table tbody td:first-child {
  font-weight: 600;
  color: var(--ink);
}

.cmp-table tbody td.cmp-hl {
  background: rgba(220, 38, 38, .05);
  font-weight: 600;
  color: var(--red-dark);
}

.cmp-table tbody tr:nth-child(even) td.cmp-hl {
  background: rgba(220, 38, 38, .08);
}

.yes { color: var(--teal); font-weight: 700; }
.no { color: #b91c1c; font-weight: 600; }
.part { color: var(--gold); font-weight: 600; }

/* ============================================================
   Versions
   ============================================================ */
.ver-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ver-card {
  position: relative;
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 32px 28px 28px;
  display: flex;
  flex-direction: column;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}

.ver-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.ver-card.featured {
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink2) 100%);
  border-color: var(--red);
  color: #fff;
  box-shadow: 0 14px 36px rgba(28, 25, 23, .22);
}

.ver-card.featured .ver-name,
.ver-card.featured .ver-price-num,
.ver-card.featured .ver-feat li { color: #fff; }

.ver-card.featured .ver-tag,
.ver-card.featured .ver-desc,
.ver-card.featured .ver-price-cy,
.ver-card.featured .ver-price-per { color: rgba(255, 255, 255, .72); }

.ver-card.featured .ver-feat li svg { color: var(--red); }

.ver-badge {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--red);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
  letter-spacing: .05em;
  box-shadow: 0 4px 12px rgba(220, 38, 38, .28);
}

.ver-tag {
  font-size: 12px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.ver-card.featured .ver-tag { color: var(--orange); }

.ver-name {
  font-size: 24px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 8px;
}

.ver-desc {
  font-size: 13.5px;
  color: var(--text-soft);
  line-height: 1.6;
  margin-bottom: 20px;
  min-height: 44px;
}

.ver-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.ver-card.featured .ver-price { border-color: rgba(255, 255, 255, .12); }

.ver-price-cy {
  font-size: 18px;
  color: var(--text-soft);
  font-weight: 600;
}

.ver-price-num {
  font-size: 38px;
  font-weight: 900;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1;
}

.ver-price-per {
  font-size: 14px;
  color: var(--text-soft);
}

.ver-feat {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.ver-feat li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.55;
}

.ver-feat li svg {
  width: 16px;
  height: 16px;
  color: var(--teal);
  flex-shrink: 0;
  margin-top: 4px;
}

.ver-cta { width: 100%; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-list {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color .2s, box-shadow .2s;
}

.faq-item.open {
  border-color: var(--red);
  box-shadow: 0 8px 24px rgba(220, 38, 38, .08);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 22px;
  text-align: left;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  transition: color .2s;
}

.faq-q:hover { color: var(--red); }

.faq-chevron {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--cream);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  transition: transform .25s, background .2s;
}

.faq-chevron svg { width: 14px; height: 14px; color: var(--text-soft); }

.faq-item.open .faq-chevron {
  background: var(--red);
  transform: rotate(180deg);
}

.faq-item.open .faq-chevron svg { color: #fff; }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.faq-item.open .faq-a { max-height: 600px; }

.faq-a-inner {
  padding: 0 22px 20px;
  font-size: 14.5px;
  color: var(--text-soft);
  line-height: 1.75;
}

.faq-a-inner p { margin-bottom: 10px; }
.faq-a-inner p:last-child { margin-bottom: 0; }

.faq-a-inner ul {
  margin: 8px 0 8px 18px;
  list-style: disc;
}

.faq-a-inner li { margin-bottom: 4px; }

/* ============================================================
   CTA Banner
   ============================================================ */
.cta-banner {
  position: relative;
  background:
    radial-gradient(600px 300px at 80% 20%, rgba(234,88,12,.18), transparent 60%),
    radial-gradient(600px 300px at 20% 90%, rgba(13,148,136,.14), transparent 60%),
    var(--ink);
  color: #fff;
  text-align: center;
  padding: 72px 24px;
  overflow: hidden;
}

.cta-inner {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
}

.cta-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  background: rgba(255, 255, 255, .08);
  color: #fff;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
  border: 1px solid rgba(255, 255, 255, .14);
}

.cta-eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(234, 88, 12, .25);
}

.cta-h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.cta-p {
  font-size: 16px;
  color: rgba(255, 255, 255, .76);
  margin-bottom: 28px;
  line-height: 1.7;
}

.cta-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, .68);
  padding: 40px 0 32px;
  border-top: 1px solid var(--ink2);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  background: var(--red);
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 900;
  font-size: 16px;
  letter-spacing: -0.05em;
}

.footer-brand-name {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
}

.footer-sec {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--teal-soft);
  background: rgba(13, 148, 136, .14);
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid rgba(13, 148, 136, .24);
}

.footer-sec svg { width: 16px; height: 16px; color: var(--teal); }

.footer-note {
  font-size: 13px;
  color: rgba(255, 255, 255, .52);
  line-height: 1.7;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-burger { display: inline-flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .plat-grid { grid-template-columns: repeat(2, 1fr); }
  .rev-grid { grid-template-columns: repeat(2, 1fr); }
  .sec-items { grid-template-columns: repeat(2, 1fr); }
  .ver-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .deep-row { grid-template-columns: 1fr; gap: 32px; }
  .deep-row.flip { direction: ltr; }
  .stats-row { grid-template-columns: repeat(3, 1fr); }
  .stats-row .stat-item:nth-child(4),
  .stats-row .stat-item:nth-child(5) { grid-column: span 1; }
}

@media (max-width: 768px) {
  .wrap { padding: 0 18px; }
  .sec { padding: 60px 0; }
  .sec-head { margin-bottom: 36px; }
  .hero { padding: 48px 0 64px; }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { width: 100%; }
  .hero-chip-card { display: none; }
  .feat-grid { grid-template-columns: 1fr; }
  .plat-grid { grid-template-columns: 1fr; }
  .rev-grid { grid-template-columns: 1fr; }
  .sec-items { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 20px; padding: 24px 0; }
  .deep-stack { gap: 48px; margin-top: 56px; }
  .cmp-table thead th,
  .cmp-table tbody td { padding: 12px 14px; font-size: 13px; }
  .dv-stat-grid { grid-template-columns: 1fr 1fr; }
  .cta-banner { padding: 56px 18px; }
  .cta-btns .btn { width: 100%; }
}

@media (max-width: 480px) {
  .nav-brand-sub { display: none; }
  .nav-cta { padding: 8px 14px; font-size: 13px; }
  .hero-h1 { font-size: 32px; }
  .stat-num { font-size: 24px; }
  .deep-h3 { font-size: 22px; }
  .sec-title { font-size: 26px; }
  .ver-price-num { font-size: 32px; }
}