/* ============ EpeePoint 剑尖 · 展示层登录 ============ */
.ep-body {
  --ep-ink: #05080f;
  --ep-cyan: #35e6ff;
  --ep-cyan-soft: #7af0ff;
  --ep-ice: #eafcff;
  --ep-muted: #7e9dad;
  --ep-crimson: #ff3b5c;
  min-height: 100vh;
  margin: 0;
  background: var(--ep-ink);
  color: var(--ep-ice);
  overflow-x: hidden;
}

.ep-body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(900px 560px at 84% -12%, rgba(53, 230, 255, .22), transparent 62%),
    radial-gradient(760px 520px at 4% 112%, rgba(255, 59, 92, .15), transparent 58%),
    linear-gradient(135deg, #05080f 0%, #08151f 46%, #04070c 100%);
}

.ep-body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: repeating-linear-gradient(118deg, rgba(122, 240, 255, .055) 0 1px, transparent 1px 52px);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
}

.ep-slash {
  position: fixed;
  z-index: 0;
  top: -15%;
  left: 46%;
  width: 150px;
  height: 132%;
  transform: skewX(-17deg);
  background: linear-gradient(180deg, rgba(53, 230, 255, .14), rgba(53, 230, 255, 0) 78%);
  border-left: 1px solid rgba(53, 230, 255, .34);
  border-right: 1px solid rgba(53, 230, 255, .07);
  pointer-events: none;
}
.ep-slash-2 {
  left: 52%;
  width: 26px;
  background: linear-gradient(180deg, rgba(255, 59, 92, .22), rgba(255, 59, 92, 0) 64%);
  border-left-color: rgba(255, 59, 92, .38);
  border-right: 0;
}

.ep-shell {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 64px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 56px 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 436px);
  align-items: center;
  gap: 64px;
}

/* ---------- 品牌区 ---------- */
.ep-brandpane { max-width: 540px; }

.ep-mark {
  display: block;
  width: 88px;
  height: 88px;
  filter: drop-shadow(0 0 26px rgba(53, 230, 255, .32));
}

.ep-word {
  margin: 26px 0 0;
  font-size: clamp(40px, 7vw, 68px);
  line-height: .96;
  font-weight: 800;
  letter-spacing: -.015em;
  color: #f6feff;
}
.ep-word span {
  background: linear-gradient(100deg, #a9f8ff, #35e6ff 48%, #0c8fb0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.ep-cn {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .62em;
  color: var(--ep-cyan-soft);
}
.ep-cn::before {
  content: "";
  width: 44px;
  height: 2px;
  background: linear-gradient(90deg, var(--ep-crimson), rgba(255, 59, 92, 0));
}

.ep-tag {
  margin: 22px 0 0;
  font-size: 13px;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--ep-muted);
}

.ep-lede {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: #b9d4de;
}

.ep-points {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  font-size: 13px;
  color: #93b1bf;
}
.ep-points li {
  display: flex;
  align-items: center;
  gap: 10px;
}
.ep-points li::before {
  content: "";
  width: 7px;
  height: 7px;
  transform: rotate(45deg);
  background: linear-gradient(135deg, var(--ep-cyan-soft), #0e9fc2);
  box-shadow: 0 0 10px rgba(53, 230, 255, .5);
}

/* ---------- 登录卡 ---------- */
.ep-formpane { width: 100%; }

.ep-card {
  position: relative;
  padding: 34px 32px 26px;
  background: linear-gradient(158deg, rgba(13, 30, 45, .94), rgba(5, 11, 19, .96));
  border: 1px solid rgba(53, 230, 255, .22);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .6),
              inset 0 1px 0 rgba(255, 255, 255, .05);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}
.ep-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 74px;
  height: 3px;
  background: linear-gradient(90deg, var(--ep-cyan-soft), rgba(53, 230, 255, 0));
}

.ep-eyebrow {
  margin: 0 0 6px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: #5f8797;
}

.ep-card h2 {
  margin: 0;
  font-size: 26px;
  letter-spacing: .02em;
  color: #f6feff;
}

.ep-sub {
  margin: 6px 0 22px;
  font-size: 12.5px;
  color: var(--ep-muted);
}

.ep-field { display: block; margin-bottom: 15px; }
.ep-field > span {
  display: block;
  margin-bottom: 7px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: #6f93a3;
}
.ep-field input {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  background: rgba(255, 255, 255, .035);
  border: 1px solid rgba(122, 200, 225, .22);
  color: var(--ep-ice);
  font-size: 15px;
  font-family: inherit;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: border-color .15s ease, background .15s ease;
}
.ep-field input::placeholder { color: #4f7183; }
.ep-field input:focus {
  outline: none;
  border-color: var(--ep-cyan);
  background: rgba(53, 230, 255, .06);
}

.ep-btn {
  width: 100%;
  height: 46px;
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  cursor: pointer;
  background: linear-gradient(100deg, #a9f8ff, #35e6ff 46%, #0e9fc2);
  color: #04131b;
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .24em;
  text-transform: uppercase;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: filter .15s ease, transform .1s ease;
}
.ep-btn:hover { filter: brightness(1.07); }
.ep-btn:active { transform: translateY(1px); }

.ep-note {
  margin-bottom: 14px;
  padding: 10px 12px;
  font-size: 12.5px;
  line-height: 1.55;
  color: #ffd88a;
  background: rgba(255, 176, 32, .1);
  border-left: 3px solid #ffb020;
}
.ep-error {
  color: #ffa3b1;
  background: rgba(255, 59, 92, .12);
  border-left-color: var(--ep-crimson);
}

.ep-hint {
  margin: 16px 0 0;
  font-size: 11px;
  text-align: center;
  color: #5d7b8b;
}

@media (max-width: 960px) {
  .ep-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
    width: min(520px, calc(100% - 40px));
    padding: 44px 0 56px;
    align-content: start;
  }
  .ep-brandpane { max-width: none; }
  .ep-mark { width: 62px; height: 62px; }
  .ep-word { margin-top: 16px; font-size: 42px; }
  .ep-cn { margin-top: 10px; font-size: 13px; }
  .ep-tag { margin-top: 14px; font-size: 11px; }
  .ep-lede { margin-top: 8px; font-size: 13.5px; }
  .ep-points { display: none; }
  .ep-card { padding: 26px 22px 22px; }
  .ep-field input { font-size: 16px; }
}

@media (max-width: 420px) {
  .ep-shell { width: calc(100% - 28px); padding: 30px 0 40px; }
  .ep-word { font-size: 36px; }
  .ep-card { padding: 22px 18px 18px; }
  .ep-slash, .ep-slash-2 { display: none; }
}