/* ICSLOT88 — 三栏门面 · Tiga Pintu Perangkat
   芯板炭 #131419 / 电路蓝 #3EC6FF · Rubik Mono One + Public Sans · 全部类名 .ic- 前缀 */

:root {
  --ic-bg: #131419;
  --ic-deep: #0d0e13;
  --ic-panel: #1a1d26;
  --ic-panel2: #161923;
  --ic-line: #2b3040;
  --ic-line2: #23273a;
  --ic-blue: #3ec6ff;
  --ic-blue-deep: #1e5f80;
  --ic-gold: #f5c84c;
  --ic-green: #58e6a8;
  --ic-warm: #ff9a5c;
  --ic-txt: #e9edf5;
  --ic-mut: #9aa6bc;
  --ic-mono: "Rubik Mono One", "Public Sans", sans-serif;
  --ic-body: "Public Sans", "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--ic-body);
  background:
    radial-gradient(1100px 420px at 50% -140px, rgba(62, 198, 255, 0.09), transparent 70%),
    var(--ic-bg);
  color: var(--ic-txt);
  line-height: 1.65;
  min-width: 0;
  padding-bottom: 86px; /* 悬浮条预留 */
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--ic-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.3; overflow-wrap: anywhere; }

/* ---------- 按钮 ---------- */

.ic-btn {
  display: inline-block;
  font-family: var(--ic-body);
  font-weight: 700;
  font-size: 0.92rem;
  padding: 0.6em 1.25em;
  border-radius: 9px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.ic-btn:hover { text-decoration: none; }

.ic-btn-fill {
  background: linear-gradient(180deg, #55d0ff, #2198d6);
  color: #06131c;
  box-shadow: 0 0 0 1px rgba(62, 198, 255, 0.35), 0 6px 18px rgba(62, 198, 255, 0.22);
}
.ic-btn-fill:hover { filter: brightness(1.08); }

.ic-btn-line {
  background: rgba(62, 198, 255, 0.06);
  color: var(--ic-blue);
  border-color: rgba(62, 198, 255, 0.45);
}
.ic-btn-line:hover { background: rgba(62, 198, 255, 0.14); }

/* ---------- 头部 ---------- */

.ic-head {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 0.7rem clamp(1rem, 4vw, 3rem);
  background: rgba(13, 14, 19, 0.94);
  border-bottom: 1px solid var(--ic-line2);
  backdrop-filter: blur(6px);
}

.ic-logo { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--ic-txt); min-width: 0; }
.ic-logo:hover { text-decoration: none; }

.ic-logo-reels {
  display: inline-flex;
  gap: 3px;
  padding: 4px 6px;
  background: var(--ic-deep);
  border: 1px solid var(--ic-line);
  border-radius: 7px;
  box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.75), 0 0 10px rgba(62, 198, 255, 0.18);
}
.ic-logo-reels b {
  font-family: var(--ic-mono);
  font-size: 0.62rem;
  color: var(--ic-gold);
  min-width: 1.1em;
  text-align: center;
}
.ic-logo-reels b:nth-child(2) { color: var(--ic-blue); }
.ic-logo-reels b:nth-child(3) { color: var(--ic-txt); }

.ic-logo-name {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: clamp(0.95rem, 2.4vw, 1.2rem);
  letter-spacing: 0.04em;
  color: var(--ic-txt);
  white-space: nowrap;
}

.ic-nav { margin-left: auto; display: flex; gap: clamp(0.6rem, 1.6vw, 1.4rem); }
.ic-nav a {
  color: var(--ic-mut);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.35em 0.2em;
  border-bottom: 2px solid transparent;
}
.ic-nav a:hover { color: var(--ic-txt); text-decoration: none; }
.ic-nav a.ic-on { color: var(--ic-blue); border-bottom-color: var(--ic-blue); }

.ic-hact { display: flex; gap: 0.55rem; }

.ic-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 9px 8px;
  border: 1px solid var(--ic-line);
  border-radius: 8px;
  cursor: pointer;
}
.ic-burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ic-blue);
  border-radius: 2px;
}

.ic-navtog { display: none; }

.ic-mnav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--ic-deep);
  border-bottom: 1px solid var(--ic-line);
  padding: 1rem clamp(1rem, 4vw, 3rem) 1.4rem;
}
.ic-navtog:checked ~ .ic-mnav { display: block; }
.ic-mgrp { min-width: 0; margin-bottom: 0.9rem; }
.ic-mgrp h2 {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ic-blue);
  margin: 0.5em 0;
}
.ic-mgrp a { display: block; color: var(--ic-mut); padding: 0.34em 0; }
.ic-mgrp a:hover { color: var(--ic-txt); text-decoration: none; }

/* ---------- 首页 hero：三扇高门 ---------- */

.ic-hero {
  position: relative;
  padding: clamp(2rem, 5vw, 4rem) clamp(1rem, 4vw, 3rem) clamp(1.4rem, 3vw, 2.4rem);
  background:
    repeating-linear-gradient(90deg, rgba(62, 198, 255, 0.045) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(0deg, rgba(62, 198, 255, 0.035) 0 1px, transparent 1px 56px),
    radial-gradient(900px 380px at 50% 0%, rgba(62, 198, 255, 0.1), transparent 70%);
  border-bottom: 1px solid var(--ic-line2);
  overflow: hidden;
}

.ic-hero-in { max-width: 880px; margin: 0 auto; text-align: center; }

.ic-kicker {
  display: inline-block;
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--ic-blue);
  border: 1px solid rgba(62, 198, 255, 0.4);
  border-radius: 999px;
  padding: 0.5em 1.1em;
  background: rgba(62, 198, 255, 0.07);
}

.ic-hero h1 {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: clamp(1.25rem, 4.4vw, 2.3rem);
  letter-spacing: 0.01em;
  margin: 1rem auto 0.9rem;
  max-width: 20ch;
  text-shadow: 0 0 24px rgba(62, 198, 255, 0.3);
}

.ic-herop { color: var(--ic-mut); max-width: 68ch; margin: 0 auto; }

.ic-payline {
  height: 0;
  max-width: 1180px;
  margin: clamp(1.6rem, 3vw, 2.4rem) auto 0;
  border-top: 2px dashed rgba(62, 198, 255, 0.35);
  box-shadow: 0 0 12px rgba(62, 198, 255, 0.25);
}

.ic-doors {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.4vw, 1.8rem);
  padding-top: clamp(1.6rem, 3vw, 2.4rem);
}

.ic-door {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  min-width: 0;
  padding: clamp(1.6rem, 3vw, 2.2rem) 1.1rem 1.6rem;
  color: var(--ic-txt);
  background:
    linear-gradient(180deg, rgba(62, 198, 255, 0.08), transparent 26%),
    linear-gradient(180deg, var(--ic-panel), #101219);
  border: 1px solid var(--ic-line);
  border-radius: 999px 999px 12px 12px;
  box-shadow: inset 0 1px 0 rgba(233, 237, 245, 0.06), 0 10px 30px rgba(0, 0, 0, 0.45);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.ic-door:hover {
  text-decoration: none;
  transform: translateY(-4px);
  border-color: rgba(62, 198, 255, 0.6);
  box-shadow: inset 0 1px 0 rgba(233, 237, 245, 0.08), 0 14px 34px rgba(0, 0, 0, 0.5),
    0 0 26px rgba(62, 198, 255, 0.22);
}

.ic-door-num {
  position: absolute;
  top: 1.2rem;
  left: 1.2rem;
  font-family: var(--ic-mono);
  font-size: 0.66rem;
  color: rgba(62, 198, 255, 0.65);
  border: 1px solid rgba(62, 198, 255, 0.3);
  border-radius: 6px;
  padding: 0.3em 0.55em;
}

.ic-door-win {
  display: flex;
  gap: 0.45rem;
  padding: 0.7rem 0.6rem;
  background: #0a0b10;
  border: 1px solid var(--ic-line2);
  border-radius: 10px;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.85), 0 0 14px rgba(62, 198, 255, 0.12);
  position: relative;
}
.ic-door-win::after { /* 中奖线 */
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  top: 50%;
  border-top: 1px dashed rgba(245, 200, 76, 0.4);
}
.ic-door-win b {
  font-family: var(--ic-mono);
  font-size: clamp(0.95rem, 2.4vw, 1.25rem);
  min-width: 1.7em;
  text-align: center;
  padding: 0.32em 0.1em;
  background: linear-gradient(180deg, #181b26, #0c0e14);
  border: 1px solid var(--ic-line2);
  border-radius: 6px;
}
.ic-door-win b:nth-child(2) { color: var(--ic-gold); }
.ic-door-win b:nth-child(1), .ic-door-win b:nth-child(3) { color: var(--ic-blue); }

.ic-door-lamps { display: flex; gap: 0.5rem; }
.ic-door-lamps i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #23273a;
}
.ic-door-batt .ic-door-lamps i:nth-child(-n + 3) { background: var(--ic-green); box-shadow: 0 0 8px rgba(88, 230, 168, 0.75); }
.ic-door-heat .ic-door-lamps i:nth-child(-n + 2) { background: var(--ic-warm); box-shadow: 0 0 8px rgba(255, 154, 92, 0.75); }
.ic-door-stor .ic-door-lamps i:nth-child(-n + 4) { background: var(--ic-gold); box-shadow: 0 0 8px rgba(245, 200, 76, 0.7); }
.ic-door-lamps i { animation: icblink 1.8s ease-in-out infinite alternate; }
.ic-door-lamps i:nth-child(2) { animation-delay: 0.3s; }
.ic-door-lamps i:nth-child(3) { animation-delay: 0.6s; }
.ic-door-lamps i:nth-child(4) { animation-delay: 0.9s; }

@keyframes icblink {
  from { opacity: 0.35; }
  to { opacity: 1; }
}

.ic-door-plate {
  font-family: var(--ic-mono);
  font-size: clamp(0.72rem, 1.9vw, 0.92rem);
  letter-spacing: 0.16em;
  color: #eaf6ff;
  background: #0e1620;
  border: 1px solid rgba(62, 198, 255, 0.45);
  border-radius: 7px;
  padding: 0.5em 0.95em;
  text-align: center;
}

.ic-door-meta {
  font-size: 0.88rem;
  color: var(--ic-mut);
  text-align: center;
  max-width: 30ch;
  min-width: 0;
}

.ic-door-lever {
  position: absolute;
  top: 40%;
  right: 0.55rem;
  width: 6px;
  height: 3.6rem;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--ic-blue), var(--ic-blue-deep));
  box-shadow: 0 0 10px rgba(62, 198, 255, 0.55);
}
.ic-door-lever::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -10px;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ic-gold);
  box-shadow: 0 0 8px rgba(245, 200, 76, 0.8);
}

.ic-hero-note {
  text-align: center;
  color: var(--ic-mut);
  font-size: 0.9rem;
  max-width: 60ch;
  margin: clamp(1.2rem, 2.4vw, 1.8rem) auto 0;
}

/* ---------- 每门展开内容段（wings） ---------- */

.ic-wing { border-bottom: 1px solid var(--ic-line2); padding: clamp(2rem, 4.4vw, 3.4rem) clamp(1rem, 4vw, 3rem); }
.ic-wing-batt { background: repeating-linear-gradient(90deg, rgba(88, 230, 168, 0.05) 0 2px, transparent 2px 46px), rgba(88, 230, 168, 0.028); }
.ic-wing-heat { background: repeating-linear-gradient(90deg, rgba(255, 154, 92, 0.05) 0 2px, transparent 2px 46px), rgba(255, 154, 92, 0.028); }
.ic-wing-stor { background: repeating-linear-gradient(90deg, rgba(245, 200, 76, 0.05) 0 2px, transparent 2px 46px), rgba(245, 200, 76, 0.028); }

.ic-wing-in {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(1.4rem, 3vw, 2.6rem);
  align-items: start;
}

.ic-wing-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--ic-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--ic-mut);
}
.ic-taglamp { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.ic-wing-batt .ic-taglamp { background: var(--ic-green); box-shadow: 0 0 8px rgba(88, 230, 168, 0.8); }
.ic-wing-heat .ic-taglamp { background: var(--ic-warm); box-shadow: 0 0 8px rgba(255, 154, 92, 0.8); }
.ic-wing-stor .ic-taglamp { background: var(--ic-gold); box-shadow: 0 0 8px rgba(245, 200, 76, 0.8); }

.ic-wing-head h2 {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: clamp(1.05rem, 3vw, 1.55rem);
  margin: 0.55rem 0 0.7rem;
  color: #f2f7ff;
}
.ic-wing-head p { color: var(--ic-mut); }

.ic-wing-more { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1rem; }

.ic-wing-list {
  list-style: none;
  display: grid;
  gap: 0.7rem;
  min-width: 0;
}
.ic-wing-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
  background: var(--ic-panel2);
  border: 1px solid var(--ic-line2);
  border-left: 3px solid var(--ic-blue);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  min-width: 0;
}
.ic-wing-batt .ic-wing-list li { border-left-color: var(--ic-green); }
.ic-wing-heat .ic-wing-list li { border-left-color: var(--ic-warm); }
.ic-wing-stor .ic-wing-list li { border-left-color: var(--ic-gold); }

.ic-wsym {
  font-family: var(--ic-mono);
  font-size: 0.95rem;
  color: var(--ic-gold);
  background: #0a0b10;
  border: 1px solid var(--ic-line2);
  border-radius: 7px;
  padding: 0.42em 0.5em;
  text-align: center;
  min-width: 2.1em;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.6);
}
.ic-wing-list strong { display: block; color: var(--ic-txt); margin-bottom: 0.15rem; }
.ic-wing-list span { color: var(--ic-mut); font-size: 0.92rem; }

/* ---------- 门下通栏叙述 + 卡片栅格 ---------- */

.ic-narr { padding: clamp(2rem, 4.4vw, 3.4rem) clamp(1rem, 4vw, 3rem); }
.ic-narr-in { max-width: 1180px; margin: 0 auto; min-width: 0; }

.ic-narr-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(1.4rem, 3vw, 2.6rem);
  align-items: center;
}

.ic-narr-fig {
  border: 1px solid var(--ic-line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--ic-deep);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45), 0 0 22px rgba(62, 198, 255, 0.1);
  min-width: 0;
}
.ic-narr-fig img { width: 100%; }
.ic-narr-fig figcaption {
  padding: 0.7rem 1rem;
  font-size: 0.84rem;
  color: var(--ic-mut);
  border-top: 1px solid var(--ic-line2);
}

.ic-narr-txt h2 {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  color: #f2f7ff;
  margin-bottom: 0.8rem;
}
.ic-narr-txt p { color: var(--ic-mut); margin-bottom: 0.85rem; }
.ic-narr-txt p:last-child { margin-bottom: 0; }

.ic-rack { margin-top: clamp(2rem, 4vw, 3rem); min-width: 0; }
.ic-rack h2 {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: clamp(1.05rem, 3vw, 1.5rem);
  color: #f2f7ff;
}
.ic-rack-p { color: var(--ic-mut); max-width: 74ch; margin: 0.5rem 0 1.3rem; }

.ic-rack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(210px, 100%), 1fr));
  gap: 0.9rem;
  min-width: 0;
}

.ic-card {
  background: var(--ic-panel2);
  border: 1px solid var(--ic-line2);
  border-radius: 12px;
  padding: 1.05rem 1rem 1.1rem;
  min-width: 0;
  position: relative;
  transition: border-color 0.18s ease, transform 0.18s ease;
}
.ic-card:hover { border-color: rgba(62, 198, 255, 0.5); transform: translateY(-3px); }

.ic-card-sym {
  display: inline-block;
  font-family: var(--ic-mono);
  font-size: 0.8rem;
  color: var(--ic-gold);
  background: #0a0b10;
  border: 1px solid var(--ic-line2);
  border-radius: 6px;
  padding: 0.35em 0.6em;
  margin-bottom: 0.6rem;
}
.ic-card h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.ic-card h3 a { color: var(--ic-txt); }
.ic-card h3 a:hover { color: var(--ic-blue); }
.ic-card p { color: var(--ic-mut); font-size: 0.88rem; }

/* ---------- FAQ ---------- */

.ic-faq { padding: clamp(2rem, 4.4vw, 3.2rem) clamp(1rem, 4vw, 3rem); border-top: 1px solid var(--ic-line2); }
.ic-faq-in { max-width: 860px; margin: 0 auto; min-width: 0; }
.ic-faq-in > h2 {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: clamp(1.1rem, 3vw, 1.55rem);
  color: #f2f7ff;
  margin-bottom: 1.1rem;
}

.ic-q {
  background: var(--ic-panel2);
  border: 1px solid var(--ic-line2);
  border-radius: 10px;
  margin-bottom: 0.65rem;
  overflow: hidden;
}
.ic-q summary {
  cursor: pointer;
  list-style: none;
  padding: 0.85rem 1rem;
  font-weight: 600;
  color: var(--ic-txt);
  position: relative;
  padding-right: 2.4rem;
}
.ic-q summary::-webkit-details-marker { display: none; }
.ic-q summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--ic-mono);
  color: var(--ic-blue);
}
.ic-q[open] summary::after { content: "−"; }
.ic-q[open] summary { border-bottom: 1px dashed var(--ic-line2); }
.ic-q p { padding: 0.85rem 1rem; color: var(--ic-mut); }

/* ---------- 信任 18+ ---------- */

.ic-trust {
  padding: clamp(2rem, 4.4vw, 3.2rem) clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--ic-line2);
  background:
    repeating-linear-gradient(90deg, rgba(245, 200, 76, 0.04) 0 2px, transparent 2px 52px),
    rgba(245, 200, 76, 0.03);
}
.ic-trust-in { max-width: 820px; margin: 0 auto; text-align: center; min-width: 0; }
.ic-18badge {
  display: inline-block;
  font-family: var(--ic-mono);
  font-size: 0.85rem;
  color: var(--ic-gold);
  border: 2px solid var(--ic-gold);
  border-radius: 999px;
  padding: 0.42em 1em;
  box-shadow: 0 0 16px rgba(245, 200, 76, 0.35), inset 0 0 10px rgba(245, 200, 76, 0.12);
  margin-bottom: 0.9rem;
}
.ic-trust-in h2 {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: clamp(1.05rem, 3vw, 1.5rem);
  color: #f2f7ff;
  margin-bottom: 0.7rem;
}
.ic-trust-in p { color: var(--ic-mut); }
.ic-trust-lnk { display: inline-block; margin-top: 1rem; font-weight: 700; }

/* ---------- 内页 ---------- */

.ic-doc { max-width: 940px; margin: 0 auto; padding: clamp(1.4rem, 3.4vw, 2.4rem) clamp(1rem, 4vw, 2rem) 3rem; min-width: 0; }

.ic-fringe {
  display: flex;
  justify-content: center;
  gap: 0.55rem;
  margin-bottom: 1.1rem;
}
.ic-fringe b {
  font-family: var(--ic-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--ic-mut);
  background: var(--ic-deep);
  border: 1px solid var(--ic-line2);
  border-radius: 6px;
  padding: 0.35em 0.7em;
}
.ic-fringe b:nth-child(2n) { color: var(--ic-blue); border-color: rgba(62, 198, 255, 0.35); }

.ic-sheet {
  background: var(--ic-panel2);
  border: 1px solid var(--ic-line2);
  border-radius: 14px;
  padding: clamp(1.2rem, 3.6vw, 2.6rem);
  min-width: 0;
}

.ic-crumbs { font-size: 0.85rem; color: var(--ic-mut); margin-bottom: 1rem; overflow-wrap: anywhere; }
.ic-crumbs a { color: var(--ic-blue); }

.ic-sheet h1 {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: clamp(1.15rem, 3.6vw, 1.8rem);
  color: #f5f9ff;
  margin-bottom: 0.9rem;
}

.ic-lead { color: var(--ic-mut); border-left: 3px solid var(--ic-blue); padding-left: 1rem; margin-bottom: 1.4rem; }

.ic-sheet h2 {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: clamp(0.98rem, 2.6vw, 1.25rem);
  color: var(--ic-blue);
  margin: 1.6rem 0 0.7rem;
}

.ic-steps { list-style: none; counter-reset: icstep; display: grid; gap: 0.7rem; min-width: 0; }
.ic-steps li {
  counter-increment: icstep;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  background: var(--ic-deep);
  border: 1px solid var(--ic-line2);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  min-width: 0;
}
.ic-steps li::before {
  content: counter(icstep, decimal-leading-zero);
  font-family: var(--ic-mono);
  font-size: 0.85rem;
  color: var(--ic-gold);
  background: #171a24;
  border: 1px solid var(--ic-line2);
  border-radius: 7px;
  padding: 0.5em 0.6em;
  height: fit-content;
  box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.6);
}
.ic-steps h3 { font-size: 1rem; color: var(--ic-txt); margin-bottom: 0.2rem; }
.ic-steps p { color: var(--ic-mut); font-size: 0.93rem; }

.ic-list { list-style: none; display: grid; gap: 0.5rem; margin: 0.4rem 0 1rem; min-width: 0; }
.ic-list li {
  color: var(--ic-mut);
  padding: 0.5rem 0.9rem 0.5rem 1.9rem;
  background: var(--ic-deep);
  border: 1px solid var(--ic-line2);
  border-radius: 8px;
  position: relative;
  overflow-wrap: anywhere;
}
.ic-list li::before {
  content: "7";
  position: absolute;
  left: 0.65rem;
  top: 0.62rem;
  font-family: var(--ic-mono);
  font-size: 0.62rem;
  color: var(--ic-blue);
}

.ic-why { color: var(--ic-mut); margin-bottom: 1rem; }

.ic-note {
  margin-top: 1.2rem;
  padding: 0.85rem 1rem;
  border: 1px dashed rgba(245, 200, 76, 0.5);
  border-radius: 10px;
  color: #f0dfa8;
  font-size: 0.93rem;
  background: rgba(245, 200, 76, 0.05);
}

.ic-fig { margin: 1.4rem 0; border: 1px solid var(--ic-line2); border-radius: 12px; overflow: hidden; background: var(--ic-deep); min-width: 0; }
.ic-fig img { width: 100%; }
.ic-fig figcaption { padding: 0.65rem 0.95rem; font-size: 0.83rem; color: var(--ic-mut); border-top: 1px solid var(--ic-line2); }
.ic-fig-lead { margin-top: 0.4rem; }

.ic-edu p { color: var(--ic-mut); margin-bottom: 0.85rem; }

.ic-rel {
  margin-top: 1.6rem;
  border-top: 1px dashed var(--ic-line2);
  padding-top: 1.1rem;
}
.ic-rel h2 { margin-top: 0; }
.ic-rel a { display: block; color: var(--ic-txt); padding: 0.3em 0; font-weight: 600; }
.ic-rel a:hover { color: var(--ic-blue); text-decoration: none; }

.ic-resp {
  margin-top: 1.4rem;
  font-size: 0.86rem;
  color: var(--ic-mut);
  padding: 0.8rem 1rem;
  background: rgba(62, 198, 255, 0.05);
  border: 1px solid rgba(62, 198, 255, 0.28);
  border-radius: 10px;
}

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

.ic-404doc { text-align: center; }
.ic-404 { max-width: 560px; margin: 2rem auto 3rem; }
.ic-404win {
  display: inline-flex;
  gap: 0.5rem;
  padding: 0.8rem 0.9rem;
  background: #0a0b10;
  border: 1px solid var(--ic-line2);
  border-radius: 12px;
  box-shadow: inset 0 0 22px rgba(0, 0, 0, 0.85), 0 0 16px rgba(62, 198, 255, 0.14);
  margin-bottom: 1.2rem;
}
.ic-404win b {
  font-family: var(--ic-mono);
  font-size: 1.3rem;
  min-width: 1.7em;
  text-align: center;
  padding: 0.3em 0.1em;
  background: linear-gradient(180deg, #181b26, #0c0e14);
  border: 1px solid var(--ic-line2);
  border-radius: 7px;
}
.ic-404win b:nth-child(2) { color: var(--ic-gold); }
.ic-404 h1 { margin-bottom: 0.8rem; }
.ic-404 p { color: var(--ic-mut); margin-bottom: 1.4rem; }
.ic-404act { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; }

/* ---------- 页脚 ---------- */

.ic-foot { border-top: 1px solid var(--ic-line2); background: var(--ic-deep); }

.ic-fgrid {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(1.8rem, 4vw, 2.8rem) clamp(1rem, 4vw, 3rem) 1.4rem;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 1.6rem;
}

.ic-fbrand p { color: var(--ic-mut); font-size: 0.9rem; margin: 0.9rem 0; max-width: 40ch; }
.ic-18badge { margin-bottom: 0; }

.ic-fcol { min-width: 0; }
.ic-fcol h2 {
  font-family: var(--ic-mono);
  font-weight: 400;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--ic-blue);
  margin-bottom: 0.7rem;
}
.ic-fcol a { display: block; color: var(--ic-mut); padding: 0.28em 0; font-size: 0.93rem; }
.ic-fcol a:hover { color: var(--ic-txt); text-decoration: none; }

.ic-fbot {
  border-top: 1px solid var(--ic-line2);
  padding: 1.1rem clamp(1rem, 4vw, 3rem) 1.3rem;
  max-width: 1180px;
  margin: 0 auto;
}
.ic-fbot p { color: var(--ic-mut); font-size: 0.84rem; text-align: center; }

/* ---------- 悬浮条（唯一外链白名单位置） ---------- */

.ic-float {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 10px;
  z-index: 60;
  width: max-content;
  max-width: min(94vw, 560px);
}
.ic-float-in {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: rgba(13, 14, 19, 0.96);
  border: 1px solid rgba(62, 198, 255, 0.5);
  border-radius: 14px;
  padding: 0.5rem 0.6rem 0.5rem 1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.55), 0 0 22px rgba(62, 198, 255, 0.2);
}

.ic-fstat {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--ic-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: var(--ic-green);
  white-space: nowrap;
}
.ic-fdot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ic-green);
  box-shadow: 0 0 10px rgba(88, 230, 168, 0.9);
  animation: icpulse 1.1s ease-in-out infinite;
}
@keyframes icpulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.8); }
}

.ic-fcta { padding: 0.55em 1.1em; }

/* ---------- 响应式 ---------- */

@media (max-width: 960px) {
  .ic-wing-in { grid-template-columns: minmax(0, 1fr); }
  .ic-narr-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 880px) {
  .ic-doors { grid-template-columns: minmax(0, 1fr); max-width: 480px; }
  .ic-door-lever { top: 1.4rem; height: 2.2rem; }
  .ic-door-lever::after { bottom: -8px; }
}

@media (max-width: 760px) {
  .ic-nav, .ic-hact { display: none; }
  .ic-burger { display: inline-flex; }
  .ic-head { flex-wrap: nowrap; justify-content: space-between; }
  .ic-logo { margin-right: auto; }
  .ic-fgrid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}

@media (max-width: 520px) {
  .ic-fgrid { grid-template-columns: minmax(0, 1fr); }
  .ic-float-in { gap: 0.5rem; padding-left: 0.75rem; }
  .ic-fstat { font-size: 0.56rem; }
  .ic-fcta { font-size: 0.84rem; padding: 0.5em 0.9em; }
  .ic-door { padding-left: 2rem; padding-right: 2rem; }
  .ic-steps li { grid-template-columns: minmax(0, 1fr); }
  .ic-steps li::before { display: none; }
  .ic-steps h3::before { content: counter(icstep) ". "; color: var(--ic-gold); font-family: var(--ic-mono); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}