/* ============================================================
   AuthSite 前台样式（火山引擎风格 · 日夜双主题）
   ============================================================ */

/* ---------- 导航 ---------- */
.front-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: 60px;
  background: var(--nav-bg);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  transition: background-color .35s ease, border-color .35s ease;
}
.front-nav-inner { max-width: 1200px; margin: 0 auto; height: 100%; padding: 0 24px; display: flex; align-items: center; gap: 36px; }
.front-nav .logo { display: flex; align-items: center; gap: 9px; font-size: 19px; font-weight: 600; letter-spacing: .5px; flex-shrink: 0; }
.front-nav .logo .grad { background: var(--brand-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.front-nav .menu { display: flex; gap: 26px; flex: 1; }
.front-nav .menu a { color: var(--text-2); font-size: 14px; transition: color .2s; position: relative; padding: 6px 0; }
.front-nav .menu a:hover, .front-nav .menu a.active { color: var(--text-1); }
.front-nav .menu a::after { content: ""; position: absolute; left: 50%; bottom: -2px; width: 0; height: 2px; background: var(--brand); transition: all .25s; transform: translateX(-50%); }
.front-nav .menu a:hover::after, .front-nav .menu a.active::after { width: 100%; }
.front-nav .actions { display: flex; gap: 12px; align-items: center; flex-shrink: 0; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 560px;
  display: flex; align-items: center; overflow: hidden;
  padding: 130px 0 80px;
  background: var(--hero-bg, var(--page-2));
  transition: background .35s ease;
}
[data-theme="dark"] .hero { background: #0B0C10; }
[data-theme="light"] .hero { background: linear-gradient(180deg, #FFF7F4 0%, #F7F8FA 78%); }
.hero-glow { position: absolute; width: 900px; height: 900px; left: 50%; top: -420px; transform: translateX(-50%); background: radial-gradient(circle, rgba(245,63,63,.3) 0%, rgba(255,122,24,.12) 38%, transparent 68%); pointer-events: none; }
[data-theme="light"] .hero-glow { opacity: .4; }
.hero-grid-bg { position: absolute; inset: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 56px 56px; opacity: .5; mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%); pointer-events: none; }
.hero .container { position: relative; text-align: center; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; border-radius: 100px; border: 1px solid rgba(245,63,63,.35); background: rgba(245,63,63,.08); color: var(--brand); font-size: 13px; margin-bottom: 26px; }
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 8px var(--brand); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
.hero h1 { font-size: 56px; font-weight: 700; letter-spacing: 2px; line-height: 1.15; }
.hero h1 .grad { background: var(--brand-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub { margin-top: 20px; font-size: 18px; color: var(--text-2); }
.hero-cta { margin-top: 36px; display: flex; gap: 16px; justify-content: center; }
.btn-hero { padding: 13px 38px; font-size: 16px; border-radius: 8px; font-weight: 600; }

/* ---------- 通用 ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section.block { padding: 80px 0; }
.sec-head { text-align: center; margin-bottom: 48px; }
.sec-eyebrow { display: inline-block; font-size: 13px; font-weight: 600; color: var(--brand); letter-spacing: 3px; text-transform: uppercase; margin-bottom: 12px; }
.sec-title { font-size: 34px; font-weight: 700; }
.sec-desc { margin-top: 12px; font-size: 15.5px; color: var(--text-2); }
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- 特性卡片 ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feat-card { padding: 32px 28px; position: relative; overflow: hidden; transition: all .3s; }
.feat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(245,63,63,.4); }
.feat-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--brand-grad); transform: scaleX(0); transform-origin: left; transition: transform .35s; }
.feat-card:hover::before { transform: scaleX(1); }
.feat-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; background: linear-gradient(135deg, rgba(245,63,63,.12), rgba(255,122,24,.12)); }
.feat-card h3 { font-size: 18px; font-weight: 600; }
.feat-card p { margin-top: 10px; font-size: 14px; color: var(--text-2); line-height: 1.8; }

/* ---------- 授权查询 ---------- */
.query-panel { max-width: 720px; margin: 0 auto; padding: 40px; }
.query-tabs { display: flex; gap: 8px; margin-bottom: 24px; }
.query-tab { flex: 1; padding: 11px; text-align: center; border-radius: 8px; font-size: 14.5px; cursor: pointer; color: var(--text-2); background: var(--page); border: 1px solid var(--line); transition: all .25s; }
.query-tab.active { background: var(--brand-grad); color: #fff; border-color: transparent; font-weight: 600; box-shadow: 0 4px 14px rgba(245,63,63,.3); }
.query-form { display: flex; gap: 12px; }
.query-form .input { flex: 1; padding: 13px 16px; font-size: 15px; }
.query-form .btn { padding: 13px 32px; font-size: 15px; }
.query-result { margin-top: 26px; display: none; }
.query-result.show { display: block; animation: fadeUp .4s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.result-row { display: flex; justify-content: space-between; padding: 12px 4px; border-bottom: 1px dashed var(--line); font-size: 14px; }
.result-row:last-child { border-bottom: none; }
.result-row .k { color: var(--text-3); }
.result-row .v { font-weight: 500; text-align: right; word-break: break-all; max-width: 70%; }

/* ---------- API 文档 ---------- */
.docs-layout { max-width: 960px; margin: 0 auto; }
.doc-block { padding: 28px 32px; margin-bottom: 22px; }
.doc-block h2 { font-size: 20px; font-weight: 700; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.doc-block h3 { font-size: 15.5px; font-weight: 600; margin: 20px 0 10px; }
.doc-block p, .doc-block li { font-size: 14px; color: var(--text-2); line-height: 1.9; }
.doc-block ul { padding-left: 20px; list-style: disc; }
.code-block { background: #0B0C10; color: #C9CDD4; border-radius: 10px; padding: 18px 20px; font-family: Consolas, "Courier New", monospace; font-size: 13px; line-height: 1.8; overflow-x: auto; margin: 12px 0; border: 1px solid rgba(255,255,255,.08); }
.code-block .c { color: #5B6070; }
.code-block .g { color: #28C840; }
.code-block .o { color: #FF7A18; }
table.doc-table { width: 100%; border-collapse: collapse; font-size: 13.5px; margin: 12px 0; }
table.doc-table th, table.doc-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
table.doc-table th { color: var(--text-3); font-weight: 500; font-size: 12.5px; }
.method-tag { display: inline-block; padding: 2px 10px; border-radius: 4px; font-size: 12px; font-weight: 700; color: #fff; background: var(--brand-grad); margin-right: 8px; }
.path-mono { font-family: Consolas, monospace; color: var(--brand); font-weight: 600; }

/* ---------- 页脚 ---------- */
.front-footer { background: var(--page-2); border-top: 1px solid var(--line); padding: 44px 0 28px; transition: background-color .35s ease, border-color .35s ease; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-inner .brand { display: flex; align-items: center; gap: 9px; font-weight: 600; }
.footer-inner .links { display: flex; gap: 22px; font-size: 13.5px; color: var(--text-2); }
.footer-inner .links a:hover { color: var(--brand); }
.footer-copy { margin-top: 22px; text-align: center; font-size: 12.5px; color: var(--text-3); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .feat-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 38px; }
  .front-nav .menu { display: none; }
  .query-form { flex-direction: column; }
  .query-panel { padding: 28px 22px; }
}