/* DOTMAX99 — 卷轴横幅式·像素雨 | bg #16181D / accent #8CF25A | Silkscreen + Space Grotesk
   所有类名 dm- 前缀（跨站零共享）。纯 CSS 交互，无 JS。 */

:root {
  --dm-bg: #16181D;
  --dm-panel: #1D2128;
  --dm-panel2: #242A33;
  --dm-line: #2E3540;
  --dm-green: #8CF25A;
  --dm-green2: #5FBF3F;
  --dm-green3: #3E8A2C;
  --dm-ink: #D8DEE7;
  --dm-mute: #98A2B0;
  --dm-glow: rgba(140, 242, 90, 0.35);
  --dm-w: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--dm-bg);
  color: var(--dm-ink);
  font-family: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.75;
  overflow-x: clip;
}

h1, h2, h3, .dm-logo-word, .dm-btn, .dm-kicker, .dm-bandtag, .dm-tape-item b, .dm-ecnum {
  font-family: "Silkscreen", "Courier New", monospace;
  letter-spacing: 0.02em;
}

h1 { font-size: clamp(1.55rem, 4vw, 2.5rem); line-height: 1.28; color: #F2F6EE; margin: 0.4em 0; }
h2 { font-size: clamp(1.2rem, 2.6vw, 1.65rem); color: var(--dm-green); margin: 1.6em 0 0.5em; line-height: 1.35; }
h3 { font-size: 1.02rem; color: #E8F2DE; margin: 0 0 0.35em; }
p { margin: 0.65em 0; }
a { color: var(--dm-green); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

.dm-main, .dm-headin, .dm-fgrid, .dm-paper { margin-inline: auto; }

/* ---------- 顶部 ---------- */

.dm-head {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(22, 24, 29, 0.94);
  border-bottom: 1px solid var(--dm-line);
  backdrop-filter: blur(6px);
}

.dm-headin {
  max-width: var(--dm-w);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 20px;
}

.dm-logo { display: inline-flex; align-items: center; gap: 10px; }
.dm-logo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  padding: 4px;
  border: 1px solid var(--dm-green3);
  background: #101318;
  font-style: normal;
  font-family: "Silkscreen", monospace;
  font-size: 0.6rem;
  color: var(--dm-green);
  text-align: center;
  box-shadow: inset 0 0 8px rgba(140, 242, 90, 0.25);
}
.dm-logo-word { color: #F4F8F1; font-size: 1.02rem; }

.dm-nav { margin-left: auto; display: flex; gap: 16px; font-size: 0.86rem; }
.dm-nav a { color: var(--dm-mute); padding: 6px 2px; }
.dm-nav a:hover { color: var(--dm-green); text-decoration: none; }
.dm-nav a.dm-on { color: var(--dm-green); border-bottom: 2px solid var(--dm-green); }

.dm-hact { display: flex; gap: 10px; margin-left: 4px; }

.dm-btn {
  display: inline-block;
  padding: 9px 18px;
  border: 1px solid var(--dm-green3);
  font-size: 0.8rem;
  text-align: center;
  cursor: pointer;
}
.dm-btn:hover { text-decoration: none; transform: translateY(-1px); }
.dm-btn-main {
  background: var(--dm-green);
  color: #14210C;
  font-weight: 700;
  box-shadow: 0 0 18px var(--dm-glow);
}
.dm-btn-main:hover { background: #A4FF7A; }
.dm-btn-ghost { background: transparent; color: var(--dm-green); }
.dm-btn-ghost:hover { border-color: var(--dm-green); }

.dm-burger { display: none; margin-left: auto; cursor: pointer; padding: 6px; }
.dm-burger span { display: block; width: 22px; height: 2px; background: var(--dm-green); margin: 5px 0; }

.dm-navtog { display: none; }

.dm-mnav { display: none; }

/* ---------- 像素雨 hero ---------- */

.dm-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--dm-line);
  background:
    radial-gradient(60% 70% at 50% 0%, #1C2230 0%, var(--dm-bg) 70%);
}

.dm-pixfield { position: absolute; inset: 0; pointer-events: none; }

.dm-px {
  position: absolute;
  top: -24px;
  left: var(--x);
  width: 9px;
  height: 9px;
  background: var(--dm-green);
  opacity: 0.75;
  box-shadow: 0 0 10px var(--dm-glow);
  animation: dm-fall var(--t) linear var(--dl) infinite;
}

.dm-px:nth-child(3n) { background: #5FBF3F; width: 6px; height: 6px; }
.dm-px:nth-child(4n) { background: #C9FDA8; opacity: 0.5; }

@keyframes dm-fall {
  0% { transform: translateY(-24px); }
  100% { transform: translateY(560px); }
}

.dm-heroin {
  position: relative;
  max-width: var(--dm-w);
  padding: clamp(56px, 9vw, 108px) 20px 96px;
}

.dm-kicker {
  display: inline-block;
  color: #0F1509;
  background: var(--dm-green);
  font-size: 0.72rem;
  padding: 4px 10px;
  margin-bottom: 14px;
}

.dm-herop { max-width: 640px; color: #C7D0CC; }

.dm-heroact { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

.dm-ladder {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  height: 26px;
}
.dm-lad { display: block; }
.dm-lad1 { background: #232B22; }
.dm-lad2 { background: #2F3D27; }
.dm-lad3 { background: #3E552C; }
.dm-lad4 { background: #548336; }
.dm-lad5 { background: #6FC24A; box-shadow: 0 -6px 18px rgba(111, 194, 74, 0.4); }
.dm-lad6 { background: var(--dm-green); box-shadow: 0 -10px 26px var(--dm-glow); }

/* ---------- 区块 A：机柜卡栅格 ---------- */

.dm-gridsec, .dm-band, .dm-faqsec, .dm-trust { max-width: var(--dm-w); padding: clamp(34px, 5vw, 64px) 20px; }

.dm-gridp { color: var(--dm-mute); max-width: 640px; }

.dm-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 26px;
}

.dm-ecard {
  position: relative;
  background: linear-gradient(180deg, var(--dm-panel2), var(--dm-panel));
  border: 1px solid var(--dm-line);
  border-top: 3px solid var(--dm-green3);
  padding: 22px 20px 30px;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.dm-ecard:hover {
  border-top-color: var(--dm-green);
  box-shadow: 0 6px 26px rgba(140, 242, 90, 0.14);
  transform: translateY(-3px);
}
/* 投币口 */
.dm-ecard::after {
  content: "";
  position: absolute;
  left: 22px;
  bottom: 12px;
  width: 34px;
  height: 5px;
  border-radius: 3px;
  background: #0E1116;
  border: 1px solid var(--dm-line);
}
.dm-ecnum {
  display: inline-block;
  color: #10230B;
  background: var(--dm-green);
  padding: 2px 8px;
  font-size: 0.72rem;
  margin-bottom: 10px;
}
.dm-ecard h3 a { color: #EDF4E8; }
.dm-eclnk { font-size: 0.8rem; letter-spacing: 0.06em; }

/* ---------- 递增数字带（横置卷轴） ---------- */

.dm-tape {
  overflow: hidden;
  border-block: 1px solid var(--dm-line);
  background: #12151A;
  padding: 14px 0;
}

.dm-tapein {
  display: inline-flex;
  align-items: center;
  gap: 26px;
  width: max-content;
  padding-left: 26px;
  animation: dm-roll 36s linear infinite;
}

.dm-tape-item {
  display: inline-flex;
  flex-direction: column;
  white-space: nowrap;
}
.dm-tape-item b { color: var(--dm-green); font-size: 0.95rem; }
.dm-tape-item small { color: var(--dm-mute); font-size: 0.72rem; letter-spacing: 0.08em; }
.dm-tape-sep { color: var(--dm-green3); font-style: normal; font-size: 0.7rem; }

@keyframes dm-roll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 区块 B：双栏 + 精选 ---------- */

.dm-bandcols {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 34px;
  align-items: start;
}

.dm-bandcols .dm-about h2:first-child { margin-top: 0; }

.dm-aside {
  background: var(--dm-panel);
  border: 1px solid var(--dm-line);
  padding: 20px 22px;
}
.dm-aside h3 { color: var(--dm-green); font-family: "Silkscreen", monospace; }

.dm-advlist { list-style: none; margin: 0; padding: 0; }
.dm-advlist li { display: flex; flex-direction: column; padding: 12px 0; border-bottom: 1px dashed var(--dm-line); }
.dm-advlist li:last-child { border-bottom: 0; }
.dm-advlist b { color: #EDF4E8; }
.dm-advlist span { color: var(--dm-mute); font-size: 0.92rem; }

.dm-picks { margin-top: 18px; }
.dm-pickrow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 20px; }
.dm-pick {
  background: var(--dm-panel);
  border: 1px solid var(--dm-line);
  border-left: 3px solid var(--dm-green3);
  padding: 16px 18px;
}
.dm-pick a b { color: #EDF4E8; font-size: 0.98rem; }
.dm-pick p { color: var(--dm-mute); font-size: 0.88rem; }

/* ---------- 像素带 ---------- */

.dm-pixband {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-block: 1px solid var(--dm-line);
  min-height: 96px;
}

.dm-bandcell { position: relative; display: grid; place-items: center; }

.dm-cell-dot {
  background-image: radial-gradient(circle, rgba(140, 242, 90, 0.55) 2px, transparent 2.6px);
  background-size: 14px 14px;
  background-color: #12151A;
}
.dm-cell-line {
  background-image: repeating-linear-gradient(0deg, rgba(140, 242, 90, 0.4) 0 2px, transparent 2px 8px);
  background-color: #13171D;
}
.dm-cell-hd {
  background: linear-gradient(120deg, #1A2618, #24401E 55%, #2E5526);
  box-shadow: inset 0 0 40px rgba(140, 242, 90, 0.18);
}
.dm-cell-hd .dm-syms b { margin: 0 10px; font-size: 1.25rem; }
.dm-bandtag {
  position: absolute;
  top: 8px;
  left: 10px;
  color: rgba(220, 240, 220, 0.6);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
}
.dm-dots { width: 74px; height: 34px; background-image: radial-gradient(circle, #8CF25A 3px, #2E5526 3.4px); background-size: 17px 17px; }
.dm-lines { width: 74px; height: 34px; background: repeating-linear-gradient(90deg, #8CF25A 0 4px, #16281B 4px 10px); }

/* ---------- FAQ / 信任 ---------- */

.dm-q {
  border: 1px solid var(--dm-line);
  border-left: 3px solid var(--dm-green3);
  background: var(--dm-panel);
  padding: 12px 18px;
  margin: 10px 0;
}
.dm-q summary { cursor: pointer; color: #EDF4E8; font-weight: 600; }
.dm-q summary:hover { color: var(--dm-green); }
.dm-q p { color: var(--dm-mute); }

.dm-trust {
  background: linear-gradient(180deg, #141A13, #10140F);
  border: 1px solid var(--dm-green3);
  border-radius: 4px;
  margin: 40px 20px;
}
.dm-trustlnk { display: inline-block; margin-top: 8px; font-size: 0.9rem; }

/* ---------- 文章纸面 ---------- */

.dm-paper { max-width: 900px; padding: 34px 20px 70px; }

.dm-strip {
  display: flex;
  justify-content: center;
  gap: 26px;
  padding: 10px 0;
  border-bottom: 1px solid var(--dm-line);
  background: #12151A;
  color: var(--dm-green);
  font-size: 1rem;
  letter-spacing: 0.3em;
}

.dm-crumbs { font-size: 0.8rem; color: var(--dm-mute); margin-bottom: 18px; }
.dm-edulead { font-size: 1.08rem; color: #C7D0CC; }

.dm-fig { margin: 26px 0; border: 1px solid var(--dm-line); background: #12151A; padding: 8px; }
.dm-fig img { width: 100%; }
.dm-fig figcaption { font-size: 0.8rem; color: var(--dm-mute); padding: 8px 6px 4px; }

.dm-navpage h2, .dm-edu h2 { margin-top: 1.7em; }

.dm-steps { list-style: none; counter-reset: dmstep; margin: 18px 0; padding: 0; }
.dm-steps li {
  counter-increment: dmstep;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--dm-line);
}
.dm-steps li::before {
  content: counter(dmstep, decimal-leading-zero);
  font-family: "Silkscreen", monospace;
  color: var(--dm-green);
  border: 1px solid var(--dm-green3);
  text-align: center;
  padding: 6px 0;
  height: fit-content;
  background: #101318;
}
.dm-steps b { display: block; color: #EDF4E8; }
.dm-steps span { color: var(--dm-mute); font-size: 0.94rem; }

.dm-navlist li { padding: 7px 0 7px 20px; position: relative; color: var(--dm-mute); }
.dm-navlist li::before { content: "▸"; position: absolute; left: 2px; color: var(--dm-green3); }
.dm-navp { color: var(--dm-mute); }

.dm-note {
  border: 1px dashed var(--dm-green3);
  background: #141A13;
  padding: 14px 18px;
  color: #CBE3BC;
}

.dm-navaside {
  margin-top: 34px;
  padding: 18px 20px;
  background: var(--dm-panel);
  border: 1px solid var(--dm-line);
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.dm-asidet {
  margin: 8px 0 2px;
  color: var(--dm-green);
  font-family: "Silkscreen", monospace;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
}

.dm-resp {
  margin-top: 30px;
  padding: 12px 16px;
  border-left: 3px solid var(--dm-green3);
  background: #12151A;
  color: var(--dm-mute);
  font-size: 0.86rem;
}

/* ---------- 404 ---------- */

.dm-404 { max-width: 640px; margin-inline: auto; text-align: center; padding: 90px 20px; }
.dm-404px { font-family: "Silkscreen", monospace; color: var(--dm-green); font-size: 1.6rem; letter-spacing: 0.2em; }
.dm-404act { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 24px; }

/* ---------- 页脚 ---------- */

.dm-foot { border-top: 1px solid var(--dm-line); background: #12151A; }
.dm-fgrid {
  max-width: var(--dm-w);
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 26px;
  padding: 44px 20px 26px;
}
.dm-fbrand p { color: var(--dm-mute); font-size: 0.86rem; }
.dm-ft {
  margin: 0 0 10px;
  color: var(--dm-green);
  font-family: "Silkscreen", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}
.dm-fcol { display: flex; flex-direction: column; gap: 7px; font-size: 0.88rem; }
.dm-fcol a { color: var(--dm-mute); }
.dm-fcol a:hover { color: var(--dm-green); }
.dm-18 {
  display: inline-block;
  margin-top: 10px;
  width: fit-content;
  border: 2px solid #E05656;
  color: #E05656;
  font-weight: 700;
  padding: 1px 8px;
}
.dm-fbot {
  max-width: var(--dm-w);
  margin: 0 auto;
  padding: 16px 20px 26px;
  border-top: 1px solid var(--dm-line);
  color: var(--dm-mute);
  font-size: 0.8rem;
}

/* ---------- 悬浮条（唯一外链） ---------- */

.dm-float {
  position: fixed;
  left: 0; right: 0; bottom: 14px;
  z-index: 60;
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.dm-floatin {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(18, 21, 26, 0.96);
  border: 1px solid var(--dm-green3);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.55), 0 0 20px rgba(140, 242, 90, 0.16);
  padding: 9px 16px;
  border-radius: 40px;
}
.dm-chip b { margin: 0 5px; font-size: 0.95rem; }
.dm-enter { animation: dm-blink 1.6s ease-in-out infinite; }

@keyframes dm-blink {
  0%, 100% { box-shadow: 0 0 6px var(--dm-glow); }
  50% { box-shadow: 0 0 22px var(--dm-glow); }
}

@media (prefers-reduced-motion: reduce) {
  .dm-px, .dm-tapein, .dm-enter { animation: none; }
}

/* ---------- 响应式 ---------- */

@media (max-width: 1024px) {
  .dm-grid { grid-template-columns: repeat(2, 1fr); }
  .dm-fgrid { grid-template-columns: 1fr 1fr; }
  .dm-bandcols { grid-template-columns: 1fr; }
  .dm-pickrow { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767px) {
  .dm-nav, .dm-hact { display: none; }
  .dm-burger { display: block; }
  .dm-navtog:checked ~ .dm-mnav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 10px 22px 20px;
    border-top: 1px solid var(--dm-line);
    background: #14171D;
  }
  .dm-mnav a { color: var(--dm-ink); padding: 8px 0; border-bottom: 1px dashed var(--dm-line); }
  .dm-mnav a:hover { color: var(--dm-green); }
  .dm-mnavt {
    margin: 14px 0 4px;
    color: var(--dm-green);
    font-family: "Silkscreen", monospace;
    font-size: 0.68rem;
    letter-spacing: 0.14em;
  }
  .dm-grid { grid-template-columns: 1fr; }
  .dm-pickrow { grid-template-columns: 1fr; }
  .dm-pixband { grid-template-columns: 1fr; }
  .dm-bandcell { min-height: 64px; }
  .dm-px:nth-child(3n) { display: none; }
  .dm-trust { margin-inline: 20px; }
}

@media (min-width: 768px) and (max-width: 1439px) {
  .dm-heroin { padding-top: 76px; }
  .dm-bandcols { gap: 24px; }
}