/* ===== Reset / Tokens ===== */
*,*::before,*::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
:root {
  --bg: #0a0808;
  --bg-2: #120a0a;
  --surface: #1a0e0e;
  --surface-2: #241414;
  --line: #3a2020;
  --line-2: #5a2e2e;
  --text: #f0e8e0;
  --muted: #a89888;
  --dim: #786858;
  --blood: #dc2626;
  --blood-2: #ef4444;
  --blood-3: #7f1d1d;
  --gold: #fbbf24;
  --silver: #d6d3d1;
  --good: #65a30d;
  --r: 6px;
  --r-lg: 14px;
}
body {
  margin: 0;
  font-family: "Source Han Serif", "Songti SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure,blockquote { margin: 0; padding: 0; }
ul,ol { list-style: none; }
a { color: inherit; text-decoration: none; }
img,svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
em { font-style: normal; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }

/* ===== 背景刀痕 ===== */
.bg-blade {
  position: fixed;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 1300px; height: 700px;
  background:
    radial-gradient(circle at 30% 40%, rgba(220,38,38,0.18), transparent 60%),
    radial-gradient(circle at 80% 60%, rgba(127,29,29,0.2), transparent 60%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

/* ===== Skip ===== */
.skip-link {
  position: absolute; top: -48px; left: 16px; z-index: 999;
  padding: 8px 16px; background: var(--gold); color: #0a0808;
  border-radius: 6px; font-size: 13px; font-weight: 700;
}
.skip-link:focus { top: 12px; outline: none; }

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,8,8,0.85);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-row {
  display: flex;
  align-items: center;
  gap: 22px;
  height: 72px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  filter: drop-shadow(0 0 8px rgba(220,38,38,0.4));
}
.brand-text {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--gold);
}
.brand-text i {
  font-style: normal;
  font-weight: 500;
  color: var(--muted);
  margin-left: 6px;
  font-size: 14px;
  border-left: 1px solid var(--line-2);
  padding-left: 8px;
}

.nav-menu { display: flex; gap: 26px; flex: 1; justify-content: center; }
.nav-a {
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s;
}
.nav-a:hover { color: var(--gold); }

.cta-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 20px;
  background: linear-gradient(135deg, var(--blood), var(--blood-3));
  color: var(--gold);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.05em;
  border-radius: var(--r);
  border: 1px solid var(--gold);
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 0 0 rgba(220,38,38,0.5);
}
.cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(220,38,38,0.4);
}
.cta-spark { font-size: 14px; }

.nav-burger {
  display: none;
  flex-direction: column; gap: 4px; padding: 8px;
}
.nav-burger span {
  display: block; width: 20px; height: 2px;
  background: var(--gold); border-radius: 2px;
}

/* ===== Buttons ===== */
.btn-blood, .btn-iron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.05em;
  border-radius: var(--r);
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.btn-blood {
  background: linear-gradient(135deg, var(--blood-2), var(--blood-3));
  color: var(--gold);
  border: 1px solid var(--gold);
  box-shadow: 0 0 0 0 rgba(220,38,38,0.4);
}
.btn-blood:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 32px rgba(220,38,38,0.45);
}
.btn-iron {
  background: var(--surface);
  color: var(--text);
  border: 1.5px solid var(--line-2);
}
.btn-iron:hover { background: var(--surface-2); border-color: var(--gold); color: var(--gold); }
.btn-xl { padding: 16px 28px; font-size: 15px; }
.btn-block { display: flex; width: 100%; padding: 14px 0; }

/* ===== Hero ===== */
.hero { position: relative; padding: 84px 0 110px; z-index: 1; text-align: center; }
.hero-inner { position: relative; z-index: 2; }

.hero-tag {
  display: inline-flex; align-items: center; gap: 12px;
  margin-bottom: 36px;
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.1em;
}
.tag-line {
  display: inline-block;
  width: 36px; height: 1px;
  background: var(--gold);
}

.hero-h1 {
  font-size: clamp(48px, 8vw, 100px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
  color: var(--silver);
}
.hl {
  background: linear-gradient(135deg, var(--gold) 0%, var(--blood-2) 50%, var(--blood-3) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.ember {
  background: linear-gradient(135deg, var(--blood-2), var(--blood-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 32px rgba(220,38,38,0.4);
}

.hero-sub {
  font-size: 16px;
  color: var(--muted);
  margin-bottom: 26px;
  letter-spacing: 0.05em;
}
.hero-lead {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.85;
  max-width: 620px;
  margin: 0 auto 38px;
}
.hero-lead strong { color: var(--text); font-weight: 700; }
.hero-lead b { color: var(--gold); font-weight: 700; }

.hero-actions {
  display: flex; gap: 14px; justify-content: center;
  margin-bottom: 56px; flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  max-width: 980px;
  margin: 0 auto;
}
.hero-stats li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  text-align: left;
  transition: border-color 0.25s, transform 0.25s;
}
.hero-stats li:hover { border-color: var(--gold); transform: translateY(-3px); }
.s-icon {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--blood-3), var(--surface-2));
  border: 1px solid var(--blood-3);
  border-radius: 50%;
  font-size: 18px;
  color: var(--gold);
  flex-shrink: 0;
}
.hero-stats b {
  display: block;
  font-size: 22px;
  font-weight: 900;
  color: var(--gold);
  letter-spacing: -0.01em;
}
.hero-stats span {
  font-size: 12px;
  color: var(--dim);
}

/* ===== Section base ===== */
.games, .download, .power, .nodes, .price, .faq, .cta-zone { padding: 100px 0; position: relative; z-index: 1; }
.head { margin-bottom: 56px; max-width: 760px; text-align: center; margin-left: auto; margin-right: auto; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 14px;
}
.h2 {
  font-size: clamp(32px, 4.6vw, 52px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 0.01em;
  margin-bottom: 14px;
  color: var(--silver);
}
.lead {
  font-size: 15.5px;
  color: var(--muted);
  line-height: 1.75;
  max-width: 640px;
  margin: 0 auto;
}

/* ===== Games ===== */
.games { background: var(--bg-2); }
.game-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.game-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 32px 28px;
  transition: all 0.25s;
  position: relative;
  overflow: hidden;
}
.game-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blood), var(--gold));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s;
}
.game-card:hover {
  transform: translateY(-3px);
  background: var(--surface-2);
}
.game-card:hover::before { transform: scaleX(1); }
.gc-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.2em;
  background: var(--blood-3);
  color: var(--gold);
  padding: 4px 10px;
  border-radius: var(--r);
  margin-bottom: 18px;
}
.game-card h3 {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
  color: var(--silver);
}
.game-card p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.8;
}

/* ===== Download ===== */
.dl-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.dl-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 30px 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.25s;
}
.dl-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  background: var(--surface-2);
}
.dl-os {
  display: inline-block;
  width: fit-content;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: var(--gold);
  background: rgba(251,191,36,0.08);
  border: 1px solid rgba(251,191,36,0.3);
  padding: 4px 10px;
  border-radius: var(--r);
  margin-bottom: 10px;
}
.dl-card h3 {
  font-size: 19px;
  font-weight: 900;
  line-height: 1.3;
  color: var(--silver);
  letter-spacing: 0.01em;
}
.dl-card p { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.dl-bot {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dashed var(--line-2);
  font-size: 12px;
  color: var(--dim);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.dl-bot em {
  font-style: normal;
  color: var(--blood-2);
  font-size: 16px;
  font-weight: 800;
  transition: transform 0.25s;
}
.dl-card:hover .dl-bot em { transform: translateX(4px); color: var(--gold); }

/* ===== Power ===== */
.power { background: var(--bg-2); }
.pw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.pw-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 36px 32px;
  transition: all 0.25s;
}
.pw-card:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
}
.pw-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--blood-2), var(--blood-3));
  border: 1px solid var(--gold);
  color: var(--gold);
  border-radius: 50%;
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 22px;
}
.pw-card h3 {
  font-size: 21px;
  font-weight: 900;
  margin-bottom: 10px;
  letter-spacing: 0.02em;
  color: var(--silver);
}
.pw-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.85;
}

/* ===== Nodes ===== */
.nd-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.nd-region {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 26px 28px;
  transition: border-color 0.2s;
}
.nd-region:hover { border-color: var(--gold); }
.nd-region h3 {
  font-size: 17px;
  font-weight: 900;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-2);
  color: var(--gold);
  letter-spacing: 0.05em;
}
.nd-region ul { display: grid; gap: 10px; }
.nd-region li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13.5px;
}
.nd-region b { color: var(--text); font-weight: 500; }
.nd-region i {
  font-style: normal;
  color: var(--blood-2);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
}

/* ===== Pricing ===== */
.price { background: var(--bg-2); }
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.plan {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 40px 32px 32px;
  display: flex;
  flex-direction: column;
  transition: all 0.25s;
}
.plan:hover { transform: translateY(-4px); }
.plan-hi {
  background: linear-gradient(180deg, rgba(220,38,38,0.08), var(--surface));
  border-color: var(--gold);
  box-shadow: 0 16px 60px rgba(220,38,38,0.15);
}
.plan-badge {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  padding: 4px 14px;
  background: linear-gradient(135deg, var(--gold), var(--blood-2));
  color: #0a0808;
  border-radius: var(--r);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.plan-rank {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--blood-2);
  margin-bottom: 10px;
}
.plan-name {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
  color: var(--silver);
}
.plan-price {
  font-size: 48px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 8px;
  color: var(--silver);
}
.plan-hi .plan-price {
  background: linear-gradient(135deg, var(--gold), var(--blood-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.plan-price span {
  font-size: 14px;
  font-weight: 500;
  color: var(--dim);
  margin-left: 8px;
  -webkit-text-fill-color: var(--dim);
}
.plan-sub {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
  padding-bottom: 22px;
  border-bottom: 1px dashed var(--line-2);
}
.plan-feat { display: grid; gap: 12px; margin-bottom: 28px; flex: 1; }
.plan-feat li {
  font-size: 14px;
  color: var(--muted);
  padding-left: 22px;
  position: relative;
}
.plan-feat li::before {
  content: "⚔";
  position: absolute;
  left: 0;
  color: var(--blood-2);
}
.pay-line {
  margin-top: 32px;
  text-align: center;
  font-size: 13px;
  color: var(--dim);
}

/* ===== FAQ ===== */
.faq-list {
  display: grid;
  gap: 12px;
  max-width: 920px;
  margin: 0 auto;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 4px 28px;
  transition: border-color 0.2s;
}
.faq-item[open] { border-color: var(--gold); background: var(--surface-2); }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between;
  list-style: none; cursor: pointer; padding: 20px 0; gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary h3 {
  font-size: 16.5px;
  font-weight: 700;
  margin: 0;
  flex: 1;
  color: var(--silver);
}
.faq-item .x {
  flex-shrink: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  position: relative;
  transition: all 0.2s;
}
.faq-item .x::before,
.faq-item .x::after {
  content: ""; position: absolute;
  background: var(--gold); border-radius: 2px;
  top: 50%; left: 50%;
}
.faq-item .x::before { width: 10px; height: 2px; transform: translate(-50%,-50%); }
.faq-item .x::after  { width: 2px; height: 10px; transform: translate(-50%,-50%); transition: transform 0.25s; }
.faq-item[open] .x { background: var(--gold); border-color: var(--gold); }
.faq-item[open] .x::before { background: #0a0808; }
.faq-item[open] .x::after { transform: translate(-50%,-50%) scaleY(0); }
.faq-item p {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.85;
  padding: 4px 0 22px;
  border-top: 1px dashed var(--line-2);
  margin-top: -4px;
  padding-top: 18px;
}
.faq-item p strong { color: var(--text); font-weight: 600; }
.faq-item p a { color: var(--gold); text-decoration: underline; text-underline-offset: 3px; }

/* ===== CTA ===== */
.cta-zone { padding: 60px 0 110px; }
.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 56px 64px;
  background:
    radial-gradient(circle 360px at 100% 0%, rgba(220,38,38,0.2), transparent 70%),
    radial-gradient(circle 320px at 0% 100%, rgba(251,191,36,0.1), transparent 70%),
    var(--surface);
  border: 1px solid var(--gold);
  border-radius: 18px;
  position: relative;
  overflow: hidden;
}
.cta-eye {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.2em;
  margin-bottom: 12px;
}
.cta-box h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1.15;
  margin-bottom: 8px;
  color: var(--silver);
}
.cta-box p {
  font-size: 15px;
  color: var(--muted);
}

/* ===== Footer ===== */
.ft {
  border-top: 1px solid var(--line);
  background: var(--bg-2);
  padding: 72px 0 32px;
}
.ft-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}
.ft-brand .brand { margin-bottom: 16px; }
.ft-brand p {
  font-size: 13.5px;
  color: var(--dim);
  line-height: 1.75;
}
.ft h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.ft ul li { font-size: 14px; color: var(--muted); margin-bottom: 10px; }
.ft ul li a:hover { color: var(--gold); }

.ft-friend {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 14px 18px;
  padding: 22px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 13px;
}
.ft-friend > span { color: var(--dim); }
.ft-friend a { color: var(--muted); transition: color 0.2s; }
.ft-friend a:hover { color: var(--gold); }

.ft-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 22px;
  font-size: 13px;
  color: var(--dim);
  flex-wrap: wrap;
  gap: 16px;
}
.ft-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--good);
  font-weight: 600;
}
.dot-on {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 0 4px rgba(101,163,13,0.18);
  animation: dot-pulse 2s ease-in-out infinite;
}
@keyframes dot-pulse { 50% { box-shadow: 0 0 0 7px rgba(101,163,13,0); } }

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--gold);
  color: #0a0808;
  padding: 10px 22px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s;
  z-index: 1000;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1080px) {
  .game-grid, .nd-list { grid-template-columns: repeat(2, 1fr); }
  .pw-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .nav-menu { display: none; }
  .nav-burger { display: inline-flex; }
  .nav-menu.open {
    display: flex; flex-direction: column;
    position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(10,8,8,0.96);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 18px 28px 28px;
    gap: 14px;
  }
  .cta-btn { display: none; }
  .container { padding: 0 20px; }
  .hero { padding: 56px 0 72px; }
  .games, .download, .power, .nodes, .price, .faq, .cta-zone { padding: 64px 0; }
  .hero-h1 { font-size: 52px; }
  .dl-row { grid-template-columns: 1fr; }
  .game-grid, .pw-grid, .nd-list { grid-template-columns: 1fr; }
  .plan-grid { grid-template-columns: 1fr; }
  .cta-box { flex-direction: column; text-align: center; padding: 40px 28px; }
  .ft-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .ft-bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .ft-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; }
}