/* =============================================================
   空空魔域工具平台 · 设计系统
   三套模板通过 html[data-skin] 切换，全部颜色走 CSS 变量
   ============================================================= */

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

/* ---------- 模板 1：nova 暗夜星河（默认） ---------- */
:root,
html[data-skin="nova"] {
  --bg: #070b14;
  --bg-2: #0a101c;
  --bg-3: #0d1524;
  --panel: rgba(255, 255, 255, 0.045);
  --panel-2: rgba(255, 255, 255, 0.072);
  --panel-solid: #0e1728;
  --border: rgba(255, 255, 255, 0.09);
  --border-2: rgba(255, 255, 255, 0.15);
  --text: #e9eefb;
  --text-2: #a3b2ce;
  --text-3: #6b7c99;
  --brand: #3b82f6;
  --brand-2: #22d3ee;
  --brand-ink: #ffffff;
  --accent: #a78bfa;
  --ok: #34d399;
  --warn: #fbbf24;
  --err: #f87171;
  --glow: rgba(59, 130, 246, 0.42);
  --glow-2: rgba(34, 211, 238, 0.28);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow: 0 14px 40px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.55);
  --hero-img-op: 1;
  --hero-img-filter: none;
  --font: "Inter", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --maxw: 1240px;
}

/* ---------- 模板 2：aurora 极光白昼 ---------- */
html[data-skin="aurora"] {
  --bg: #f4f6fb;
  --bg-2: #ffffff;
  --bg-3: #eef2f9;
  --panel: #ffffff;
  --panel-2: #f7f9fd;
  --panel-solid: #ffffff;
  --border: #e4e9f2;
  --border-2: #cfd8e8;
  --text: #0e1729;
  --text-2: #55637a;
  --text-3: #8a97ad;
  --brand: #4f46e5;
  --brand-2: #8b5cf6;
  --brand-ink: #ffffff;
  --accent: #ec4899;
  --ok: #10b981;
  --warn: #f59e0b;
  --err: #ef4444;
  --glow: rgba(79, 70, 229, 0.2);
  --glow-2: rgba(139, 92, 246, 0.16);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 30px 70px rgba(15, 23, 42, 0.12);
  --hero-img-op: 1;
  --hero-img-filter: none;
  --font: "Inter", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --maxw: 1240px;
}

/* ---------- 模板 3：royal 曜金尊享 ---------- */
html[data-skin="royal"] {
  --bg: #08080a;
  --bg-2: #101014;
  --bg-3: #16161c;
  --panel: rgba(212, 175, 55, 0.045);
  --panel-2: rgba(212, 175, 55, 0.085);
  --panel-solid: #121216;
  --border: rgba(212, 175, 55, 0.16);
  --border-2: rgba(212, 175, 55, 0.32);
  --text: #f6f1e3;
  --text-2: #c2b795;
  --text-3: #8a8067;
  --brand: #d4af37;
  --brand-2: #f6dd94;
  --brand-ink: #1a1408;
  --accent: #e08a3c;
  --ok: #5ec98a;
  --warn: #e8b44a;
  --err: #e06a5f;
  --glow: rgba(212, 175, 55, 0.3);
  --glow-2: rgba(246, 221, 148, 0.16);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.4);
  --shadow: 0 16px 44px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 30px 90px rgba(0, 0, 0, 0.7);
  --hero-img-op: 1;
  --hero-img-filter: none;
  --font: "Inter", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: Georgia, "Songti SC", "Times New Roman", serif;
  --radius-sm: 4px;
  --radius: 6px;
  --radius-lg: 10px;
  --maxw: 1240px;
}

/* ---------- 基础 ---------- */
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 背景光晕层 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(60% 45% at 78% -8%, var(--glow) 0%, transparent 62%),
    radial-gradient(45% 40% at 8% 4%, var(--glow-2) 0%, transparent 60%),
    radial-gradient(50% 45% at 50% 108%, var(--glow-2) 0%, transparent 65%),
    var(--bg);
  opacity: 0.9;
}
html[data-skin="aurora"] body::before { opacity: 1; }
html[data-skin="royal"] body::before {
  background:
    radial-gradient(55% 40% at 80% -10%, rgba(212, 175, 55, 0.22) 0%, transparent 60%),
    radial-gradient(40% 35% at 6% 6%, rgba(224, 138, 60, 0.12) 0%, transparent 60%),
    var(--bg);
}

/* 细网格纹理 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 75%);
  opacity: 0.5;
}
html[data-skin="aurora"] body::after { opacity: 0.35; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
h1, h2, h3, h4, h5 { margin: 0; font-family: var(--font-display); font-weight: 750; letter-spacing: -0.02em; line-height: 1.2; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
hr { border: none; border-top: 1px solid var(--border); }

::selection { background: var(--brand); color: var(--brand-ink); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 8px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); background-clip: content-box; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 900px; }

.svg-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon {
  width: 1.15em; height: 1.15em;
  fill: none; stroke: currentColor; stroke-width: 1.7;
  stroke-linecap: round; stroke-linejoin: round;
  flex: none; vertical-align: -0.18em;
}

/* ---------- 排版 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 650; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--brand);
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; opacity: 0.6; }

.h1 { font-size: clamp(2.1rem, 4.6vw, 3.6rem); }
.h2 { font-size: clamp(1.6rem, 2.8vw, 2.4rem); }
.h3 { font-size: 1.25rem; }
.lead { color: var(--text-2); font-size: 1.0625rem; line-height: 1.75; }
.muted { color: var(--text-2); }
.dim { color: var(--text-3); }
.tiny { font-size: 12.5px; }
.mono { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; }
.grad-text {
  background: linear-gradient(100deg, var(--text) 0%, var(--brand) 55%, var(--brand-2) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.text-c { text-align: center; }

/* ---------- 布局工具 ---------- */
.row { display: flex; align-items: center; gap: 12px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.wrap { flex-wrap: wrap; }
.col { display: flex; flex-direction: column; gap: 12px; }
.grow { flex: 1; }
.grid { display: grid; gap: 22px; }
.grid > * { min-width: 0; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; } .mt-4 { margin-top: 40px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; } .mb-4 { margin-bottom: 40px; }
.hide { display: none !important; }

/* ---------- 区块 ---------- */
.section { padding: 68px 0; position: relative; }
.section-tight { padding: 44px 0; }
.section-head { max-width: 720px; margin: 0 auto 36px; text-align: center; }
.section-head .h2 { margin: 14px 0 12px; }
.section-head.left { margin-left: 0; text-align: left; }
.section-head.left .eyebrow::before { display: none; }

/* ---------- 按钮 ---------- */
.btn {
  --btn-bg: var(--panel-2);
  --btn-fg: var(--text);
  --btn-bd: var(--border);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--btn-bd);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: 14.5px; font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform .18s ease, box-shadow .22s ease, background .2s ease, border-color .2s ease, opacity .2s;
  user-select: none;
}
.btn:hover { transform: translateY(-1px); border-color: var(--border-2); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn .icon { width: 1.05em; height: 1.05em; }

.btn-primary {
  --btn-fg: var(--brand-ink);
  --btn-bd: transparent;
  background: linear-gradient(100deg, var(--brand), var(--brand-2));
  box-shadow: 0 10px 26px -8px var(--glow), inset 0 1px 0 rgba(255, 255, 255, .25);
  font-weight: 700;
}
.btn-primary:hover { box-shadow: 0 16px 38px -8px var(--glow), inset 0 1px 0 rgba(255, 255, 255, .3); }
.btn-outline { --btn-bg: transparent; --btn-bd: var(--border-2); }
.btn-outline:hover { background: var(--panel-2); }
.btn-ghost { --btn-bg: transparent; --btn-bd: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--panel-2); color: var(--text); }
.btn-danger { --btn-bg: transparent; --btn-bd: color-mix(in srgb, var(--err) 45%, transparent); color: var(--err); }
.btn-danger:hover { background: color-mix(in srgb, var(--err) 12%, transparent); }
.btn-sm { padding: 7px 13px; font-size: 13px; border-radius: calc(var(--radius-sm) - 3px); }
.btn-lg { padding: 15px 30px; font-size: 16px; border-radius: var(--radius); }
.btn-block { width: 100%; }
.btn-icon { padding: 9px; width: 38px; height: 38px; }
.btn-icon.btn-sm { width: 30px; height: 30px; padding: 5px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  position: relative;
  transition: transform .28s cubic-bezier(.2,.7,.3,1), border-color .28s, box-shadow .28s, background .28s;
}
html[data-skin="aurora"] .card { box-shadow: var(--shadow-sm); }
.card-hover:hover {
  transform: translateY(-4px);
  border-color: var(--border-2);
  box-shadow: var(--shadow);
  background: var(--panel-2);
}
html[data-skin="aurora"] .card-hover:hover { background: #fff; box-shadow: var(--shadow); }
.card-pad-lg { padding: 34px; }
.card-solid { background: var(--panel-solid); }
.card-glow::after {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none;
  background: linear-gradient(140deg, var(--glow), transparent 45%);
  opacity: 0; transition: opacity .3s;
  mask: linear-gradient(#000, #000) content-box, linear-gradient(#000, #000);
  -webkit-mask-composite: xor; mask-composite: exclude;
  padding: 1px;
}
.card-glow:hover::after { opacity: 1; }

/* ---------- 表单 ---------- */
.field { display: flex; flex-direction: column; gap: 7px; margin-bottom: 16px; }
.label { font-size: 13px; font-weight: 600; color: var(--text-2); display: flex; align-items: center; gap: 6px; }
.label .req { color: var(--err); }
.input, .select, .textarea {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  color: var(--text);
  font-size: 14.5px;
  transition: border-color .2s, box-shadow .2s, background .2s;
  outline: none;
}
html[data-skin="aurora"] .input, html[data-skin="aurora"] .select, html[data-skin="aurora"] .textarea { background: #fff; }
.input::placeholder, .textarea::placeholder { color: var(--text-3); }
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 18%, transparent);
}
.textarea { min-height: 110px; resize: vertical; line-height: 1.7; }
.select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--text-3) 50%), linear-gradient(135deg, var(--text-3) 50%, transparent 50%); background-position: calc(100% - 19px) 50%, calc(100% - 13px) 50%; background-size: 6px 6px, 6px 6px; background-repeat: no-repeat; padding-right: 38px; }
.hint { font-size: 12.5px; color: var(--text-3); }
.check { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-2); cursor: pointer; }
.check input { width: 16px; height: 16px; accent-color: var(--brand); }

/* ---------- 标记 ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 9px; border-radius: 999px;
  font-size: 11.5px; font-weight: 650; letter-spacing: .02em;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text-2);
  white-space: nowrap;
}
.badge-brand { background: color-mix(in srgb, var(--brand) 16%, transparent); border-color: color-mix(in srgb, var(--brand) 35%, transparent); color: var(--brand); }
.badge-ok { background: color-mix(in srgb, var(--ok) 14%, transparent); border-color: color-mix(in srgb, var(--ok) 35%, transparent); color: var(--ok); }
.badge-warn { background: color-mix(in srgb, var(--warn) 14%, transparent); border-color: color-mix(in srgb, var(--warn) 35%, transparent); color: var(--warn); }
.badge-err { background: color-mix(in srgb, var(--err) 14%, transparent); border-color: color-mix(in srgb, var(--err) 35%, transparent); color: var(--err); }
.dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; display: inline-block; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 15px; border-radius: 999px;
  border: 1px solid var(--border); background: transparent;
  color: var(--text-2); font-size: 13.5px; font-weight: 550;
  transition: all .2s; white-space: nowrap;
}
.chip:hover { border-color: var(--border-2); color: var(--text); }
.chip.active { background: var(--text); border-color: var(--text); color: var(--bg); font-weight: 650; }
html[data-skin="royal"] .chip.active { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }

/* ---------- 分隔 ---------- */
.divider { height: 1px; background: var(--border); margin: 24px 0; }

/* ---------- 表格 ---------- */
.table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13.5px; }
.table th {
  text-align: left; font-weight: 600; color: var(--text-3); font-size: 12px;
  letter-spacing: .06em; text-transform: uppercase;
  padding: 10px 12px; border-bottom: 1px solid var(--border); white-space: nowrap;
}
.table td { padding: 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tbody tr { transition: background .2s; }
.table tbody tr:hover { background: var(--panel-2); }
.table-wrap { overflow-x: auto; margin: 0 -8px; padding: 0 8px; }

/* ---------- 动画 ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes shimmer { 100% { transform: translateX(100%); } }
.anim-up { animation: fadeUp .55s cubic-bezier(.2,.7,.3,1) both; }
.anim-in { animation: fadeIn .4s ease both; }
.spin { animation: spin 1s linear infinite; }

/* ---------- 启动页 ---------- */
.boot { min-height: 100vh; display: grid; place-content: center; gap: 22px; justify-items: center; }
.boot-logo { font-size: 22px; font-weight: 800; letter-spacing: .18em; color: var(--text-2); }
.boot-bar { width: 180px; height: 3px; border-radius: 3px; background: var(--panel-2); overflow: hidden; }
.boot-bar span { display: block; height: 100%; width: 40%; border-radius: 3px; background: linear-gradient(90deg, var(--brand), var(--brand-2)); animation: bootMove 1.1s ease-in-out infinite; }
@keyframes bootMove { 0% { transform: translateX(-110%); } 100% { transform: translateX(320%); } }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section { padding: 68px 0; }
}
@media (max-width: 760px) {
  body { font-size: 14.5px; }
  .container { padding: 0 18px; }
  .g2, .g3, .g4 { grid-template-columns: 1fr; }
  .section { padding: 52px 0; }
  .section-head { margin-bottom: 32px; }
  .card { padding: 20px; }
  .card-pad-lg { padding: 22px; }
  .h1 { font-size: 2rem; }
  .h2 { font-size: 1.55rem; }
  .hide-mobile { display: none !important; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}