:root {
  --ink: #2a2451;
  --sub-ink: #615d82;
  --brand: #ff7bb0;
  --brand-dark: #ff5ca0;
  --mint: #8be9da;
  --bg: #fff7fd;
  --card-bg: rgba(255, 255, 255, 0.9);
  --line: rgba(109, 88, 146, 0.16);
  --shadow: 0 10px 30px rgba(137, 98, 164, 0.16);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  line-height: 1.6;
  background:
    radial-gradient(circle at 16px 16px, rgba(255, 203, 227, 0.35) 4px, transparent 5px),
    radial-gradient(circle at 64px 24px, rgba(176, 238, 230, 0.24) 3px, transparent 4px),
    linear-gradient(120deg, #fff9fd 0%, #f7fcff 100%);
  background-size: 96px 96px, 128px 128px, auto;
}
a { color: var(--ink); text-decoration: none; }
a:hover { opacity: 0.86; }

.container { width: min(1160px, calc(100% - 32px)); margin: 0 auto; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  background: rgba(255, 249, 253, 0.88);
}
.nav { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { font-size: 19px; font-weight: 800; color: var(--ink); letter-spacing: -0.02em; }
.logo { display: inline-flex; align-items: center; gap: 10px; }
.logo-img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  object-fit: cover;
  border: 1px solid rgba(161, 129, 202, 0.24);
  box-shadow: 0 4px 12px rgba(124, 96, 173, 0.2);
}
.nav-links { display: flex; align-items: center; gap: 20px; }
.nav-links a { font-size: 14px; font-weight: 600; }
.mobile-auth-link {
  display: none;
  color: #3b73ff;
  font-size: 16px;
  font-weight: 700;
}
.mobile-nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}
.btn {
  position: relative;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .25s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease);
}
.btn:focus-visible { outline: 2px solid #8d79ff; outline-offset: 2px; }
.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff;
  box-shadow: 0 8px 20px rgba(255, 92, 160, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost {
  background: #ffffff;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: #fff0f8; }

.hero {
  min-height: 72vh;
  position: relative;
  background-size: cover;
  background-position: center;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 248, 254, 0.72), rgba(255, 248, 254, 0.94));
}
.hero-inner { position: relative; z-index: 1; padding: 108px 0 70px; }
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 700;
  color: #a13c79;
  background: #ffe8f4;
  border: 1px solid #ffd2e8;
}
h1 {
  margin: 16px 0 18px;
  font-size: clamp(34px, 6vw, 50px);
  line-height: 1.12;
  letter-spacing: -0.03em;
}
.hero p {
  margin: 0 0 28px;
  max-width: 760px;
  color: var(--sub-ink);
  font-size: 19px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

section { padding: 92px 0; }
.section-title {
  margin: 0 0 14px;
  font-size: clamp(30px, 4vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.03em;
}
.section-desc { margin: 0 0 30px; color: var(--sub-ink); font-size: 17px; max-width: 880px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card,
.step {
  border-radius: 20px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 22px;
}
.card h3,
.step h3 { margin: 0 0 10px; font-size: 22px; }
.card p,
.step p { margin: 0; color: var(--sub-ink); }
.card p + p { margin-top: 10px; }

.mono {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 12px;
  color: #8b7db4;
}

.auth-wrap, .feedback-wrap {
  width: min(620px, calc(100% - 32px));
  margin: 56px auto;
  padding: 28px;
  border-radius: 20px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.auth-page { padding: 42px 0 64px; }
.auth-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: stretch;
}
.auth-side {
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(255, 228, 242, 0.95), rgba(228, 248, 255, 0.95));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 34px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.auth-side h2 {
  margin: 0 0 12px;
  font-size: clamp(28px, 3.5vw, 40px);
  line-height: 1.2;
}
.auth-side p { margin: 0; color: var(--sub-ink); font-size: 16px; }
.switch-link { margin: 14px 0 0; color: var(--sub-ink); }
.switch-link a { color: #3b73ff; font-weight: 700; }
.input-row { display: grid; gap: 8px; margin-bottom: 14px; }
label { font-size: 14px; font-weight: 600; color: var(--ink); }
input, textarea, select {
  width: 100%;
  border: 1px solid rgba(141, 118, 181, 0.25);
  background: #fff;
  color: var(--ink);
  border-radius: 14px;
  padding: 11px 12px;
  font-size: 14px;
}
input:focus, textarea:focus, select:focus {
  outline: 2px solid rgba(141, 121, 255, 0.5);
  border-color: transparent;
}
textarea { min-height: 120px; resize: vertical; }

.alert {
  margin-bottom: 14px;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 14px;
}
.alert-ok { background: #eafff4; color: #0f6f4c; border: 1px solid #b7f2d8; }
.alert-err { background: #fff0f0; color: #9a2d33; border: 1px solid #ffcbcb; }

footer {
  border-top: 1px solid var(--line);
  color: var(--sub-ink);
  padding: 34px 0;
}

table { width: 100%; border-collapse: collapse; }
th, td { padding: 8px 6px; border-bottom: 1px dashed rgba(141, 118, 181, 0.18); vertical-align: top; }

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.in { opacity: 1; transform: translateY(0); }
.parallax { will-change: transform; }
.admin-reply-box {
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  background: #eef9ff;
  border: 1px solid #bee4f8;
}
.admin-reply-box.pending {
  background: #fff7ea;
  border-color: #ffdca8;
}
.admin-reply-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: #0d6a99;
  background: #d7f0ff;
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 8px;
}
.admin-reply-box.pending .admin-reply-tag {
  color: #8a5a00;
  background: #ffe8ba;
}
.page-transition {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(255, 183, 220, 0.25), rgba(255,255,255,0.95));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .38s var(--ease);
  z-index: 9999;
  pointer-events: none;
}
.page-transition.active { transform: scaleY(1); }

@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (hover: none) and (pointer: coarse) {
  .nav-links { display: none !important; }
  .mobile-nav-toggle { display: none !important; }
  .mobile-auth-link { display: inline-flex; }
}

@media (max-width: 768px) {
  .grid-3 { grid-template-columns: 1fr; }
  .auth-grid { grid-template-columns: 1fr; }
  .auth-side { order: 2; }
  .auth-wrap { order: 1; margin: 0; width: 100%; }
  .logo-img { width: 30px; height: 30px; }
  section { padding: 58px 0; }
  .hero-inner { padding: 86px 0 58px; }
  .hero p { font-size: 16px; }
}