/* ==========================================================================
   K8G 俱乐部网站 —— 全站样式
   零外部资源：不加载任何第三方字体、图标或图片，访客不会因此暴露 IP。
   ========================================================================== */

:root {
  --bg: #0b0d10;
  --bg-2: #101419;
  --panel: #141a21;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.19);
  --ink: #f1f3ee;
  --body: #c5cbd3;
  --muted: #96a0aa;
  --accent: #c9f24d;
  --accent-ink: #0b0d10;
  --danger: #ff6b5e;
  --wrap: 1120px;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
    system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: var(--accent-ink); }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  padding: 0.8rem 1.2rem; background: var(--accent); color: var(--accent-ink);
  font-weight: 700; text-decoration: none;
}
.skip:focus { left: 0.75rem; top: 0.75rem; }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

/* ---------- 头部 ---------- */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 13, 16, 0.86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 66px;
}

.brand { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; }

.brand-mark {
  display: grid; place-items: center; width: 38px; height: 38px; flex: 0 0 auto;
  border-radius: 11px; background: var(--accent); color: var(--accent-ink);
  font: 700 14px/1 var(--mono); letter-spacing: -0.03em;
}

.brand-name {
  display: flex; flex-direction: column; font-weight: 800;
  font-size: 1.02rem; line-height: 1.2; letter-spacing: 0.05em;
}
.brand-name small {
  font: 500 11px/1.4 var(--sans); color: var(--muted); letter-spacing: 0.1em;
}

.nav { display: flex; align-items: center; gap: 0.2rem; }
.nav a {
  padding: 0.5rem 0.75rem; border-radius: 999px; font-size: 0.92rem;
  color: var(--muted); text-decoration: none;
  transition: color 0.15s ease, background 0.15s ease;
}
.nav a:hover { color: var(--ink); background: rgba(255, 255, 255, 0.06); }
.nav .btn { margin-left: 0.45rem; }

.nav-toggle {
  display: none; align-items: center; padding: 0.55rem 0.9rem;
  background: transparent; border: 1px solid var(--line-strong); border-radius: 999px;
  color: var(--ink); font: 500 0.9rem/1 var(--sans); cursor: pointer;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.8rem 1.3rem; border: 1px solid transparent; border-radius: 999px;
  background: var(--accent); color: var(--accent-ink);
  font: 700 0.96rem/1.2 var(--sans); text-decoration: none; white-space: nowrap;
  cursor: pointer; transition: transform 0.15s ease, filter 0.15s ease, background 0.15s ease;
}
.btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.06); filter: none; }
.btn-sm { padding: 0.52rem 0.95rem; font-size: 0.88rem; }
.btn-block { width: 100%; }
.btn-danger { background: var(--danger); color: #1a0705; }

.mini {
  display: inline-block; padding: 0.3rem 0.55rem; border-radius: 8px;
  border: 1px solid var(--line-strong); background: transparent;
  color: var(--body); font-size: 0.82rem; text-decoration: none; cursor: pointer;
}
.mini:hover { border-color: var(--accent); color: var(--accent); }
.mini-danger:hover { border-color: var(--danger); color: var(--danger); }

/* ---------- 首屏 ---------- */

.hero { position: relative; overflow: hidden; padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(2.5rem, 5vw, 4rem); }

.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(55% 55% at 82% 10%, rgba(201, 242, 77, 0.13), transparent 70%),
    radial-gradient(45% 45% at 2% 94%, rgba(139, 123, 247, 0.11), transparent 70%);
}

.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(70% 62% at 50% 26%, #000 0%, transparent 78%);
  mask-image: radial-gradient(70% 62% at 50% 26%, #000 0%, transparent 78%);
}

.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.18fr 0.82fr;
  gap: clamp(2rem, 5vw, 4rem); align-items: center;
}

.eyebrow {
  margin: 0 0 1rem; font: 600 0.75rem/1.5 var(--mono);
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent);
}

.hero h1 {
  margin: 0 0 1.3rem; font-size: clamp(2.4rem, 6.6vw, 4.6rem);
  font-weight: 800; line-height: 1; letter-spacing: -0.04em;
}

.lede { max-width: 34em; margin: 0 0 2rem; font-size: clamp(1rem, 1.3vw, 1.08rem); color: var(--body); }

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; }

.hero-facts {
  display: flex; flex-wrap: wrap; gap: 2.2rem;
  margin: 2.4rem 0 0; padding: 1.4rem 0 0;
  list-style: none; border-top: 1px solid var(--line);
}
.hero-facts strong { display: block; font-size: 1.4rem; letter-spacing: -0.02em; }
.hero-facts span { font-size: 0.82rem; color: var(--muted); }

.hero-side { display: grid; gap: 0.9rem; }

.notice {
  display: grid; gap: 0.35rem; padding: 1.1rem 1.2rem;
  border: 1px solid rgba(201, 242, 77, 0.32); border-left-width: 3px;
  border-radius: 14px; background: rgba(201, 242, 77, 0.07);
}
.notice strong {
  font: 600 0.72rem/1 var(--mono); letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
}
.notice span { font-size: 0.94rem; color: var(--body); }

.side-card {
  padding: 1.2rem; border: 1px solid var(--line); border-radius: 16px;
  background: linear-gradient(150deg, #171d25, #10151b);
}
.side-card p { margin: 0 0 0.8rem; font-size: 0.9rem; color: var(--muted); }
.side-label {
  font: 600 0.7rem/1 var(--mono); letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent);
}

/* ---------- 通用区块 ---------- */

.section { padding: clamp(3.2rem, 7vw, 5.5rem) 0; }
.section-alt { background: var(--bg-2); border-block: 1px solid var(--line); }
.section-tight { padding: clamp(2.2rem, 4vw, 3.2rem) 0 0; }

.section-head { max-width: 46rem; margin-bottom: clamp(1.8rem, 3.5vw, 2.8rem); }
.section-head h2 {
  margin: 0 0 0.9rem; font-size: clamp(1.8rem, 3.8vw, 2.7rem);
  font-weight: 800; line-height: 1.08; letter-spacing: -0.035em;
}
.section-head p { margin: 0; font-size: 1rem; color: var(--muted); }

.page-head {
  padding: clamp(2.4rem, 5vw, 3.6rem) 0 1.4rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0.5rem;
}
.page-head h1 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.9rem, 4.2vw, 2.7rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.035em;
}
.page-head p { margin: 0; font-size: 0.9rem; color: var(--muted); }

.page-title { margin: 0 0 0.5rem; font-size: clamp(1.9rem, 4vw, 2.7rem); font-weight: 800; letter-spacing: -0.035em; }
.page-sub { margin: 0 0 1.6rem; color: var(--muted); }

section[id], div[id] { scroll-margin-top: 86px; }

/* ---------- 三条原则 ---------- */

.pillars {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: 18px; overflow: hidden;
}
.pillar { padding: clamp(1.3rem, 2.4vw, 1.9rem); background: var(--bg); }
.pillar-n { display: block; margin-bottom: 0.8rem; font: 700 0.77rem/1 var(--mono); letter-spacing: 0.15em; color: var(--accent); }
.pillar h3 { margin: 0 0 0.4rem; font-size: 1.08rem; }
.pillar p { margin: 0; font-size: 0.9rem; color: var(--muted); }

/* ---------- 卡片 ---------- */

.cards {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
  margin: 0; padding: 0; list-style: none;
}
.card {
  padding: 1.35rem; border: 1px solid var(--line); border-radius: 16px;
  background: var(--bg); transition: transform 0.2s ease, border-color 0.2s ease;
}
.section-alt .card { background: #0c1015; }
.card:hover { transform: translateY(-3px); border-color: rgba(201, 242, 77, 0.38); }
.card-n { font: 700 0.73rem/1 var(--mono); letter-spacing: 0.14em; color: var(--accent); }
.card h3 { margin: 0.8rem 0 0.3rem; font-size: 1.05rem; }
.card p { margin: 0; font-size: 0.89rem; color: var(--muted); }

/* ---------- 场次 ---------- */

.sessions { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }

.session {
  display: grid; grid-template-columns: 8.5rem 1fr auto; gap: 1.4rem;
  align-items: center; padding: 1.4rem 0.3rem; border-bottom: 1px solid var(--line);
  transition: background 0.2s ease;
}
.session:hover { background: rgba(255, 255, 255, 0.022); }
.session-day span { display: block; font-size: 1.02rem; font-weight: 800; }
.session-day small { font: 500 0.79rem/1.7 var(--mono); color: var(--muted); }
.session-body h3 { margin: 0 0 0.15rem; font-size: 1.05rem; }
.session-body p { margin: 0; font-size: 0.89rem; color: var(--muted); }
.session-meta { display: flex; flex-wrap: wrap; gap: 0.4rem; justify-content: flex-end; }

.tag {
  padding: 0.36rem 0.58rem; border: 1px solid var(--line-strong); border-radius: 999px;
  font: 600 0.69rem/1 var(--mono); letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--muted); white-space: nowrap;
}

.note { margin: 1.4rem 0 0; font-size: 0.87rem; color: var(--muted); }

/* ---------- 步骤 ---------- */

.steps {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
  margin: 0 0 2.2rem; padding: 0; list-style: none;
}
.step { padding: 1.5rem; border: 1px solid var(--line); border-radius: 16px; background: var(--bg); }
.step-n { display: block; margin-bottom: 0.7rem; font: 700 0.75rem/1 var(--mono); letter-spacing: 0.16em; color: var(--accent); }
.step h3 { margin: 0 0 0.35rem; font-size: 1.03rem; }
.step p { margin: 0; font-size: 0.89rem; color: var(--muted); }

.cta-card {
  display: flex; align-items: center; justify-content: space-between; gap: 1.8rem;
  padding: clamp(1.4rem, 3vw, 2.1rem);
  border: 1px solid rgba(201, 242, 77, 0.28); border-radius: 18px;
  background: linear-gradient(118deg, rgba(201, 242, 77, 0.1), rgba(139, 123, 247, 0.08));
}
.cta-card h3 { margin: 0 0 0.35rem; font-size: 1.15rem; }
.cta-card p { margin: 0; max-width: 38em; font-size: 0.9rem; color: var(--body); }

.privacy-note { margin: 1.2rem 0 0; font-size: 0.84rem; color: var(--muted); }
.privacy-note a { color: var(--body); text-underline-offset: 3px; }

/* ---------- 名册 ---------- */

.roster { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.8rem; margin: 0; padding: 0; list-style: none; }

.player {
  display: flex; align-items: center; gap: 0.9rem;
  padding: 0.9rem 1rem; border: 1px solid var(--line); border-radius: 14px;
  background: #0c1015;
}
.player-main { min-width: 0; flex: 1 1 auto; }
.player-main h3 { margin: 0; font-size: 1rem; letter-spacing: -0.01em; }
.player-meta { margin: 0.15rem 0 0; font-size: 0.83rem; color: var(--muted); }
.player-games { display: flex; flex-wrap: wrap; gap: 0.3rem; justify-content: flex-end; }

.avatar {
  width: 56px; height: 56px; flex: 0 0 auto; border-radius: 50%;
  object-fit: cover; background: #1b222a; border: 1px solid var(--line-strong);
}
.avatar-sm { width: 32px; height: 32px; }
.avatar-fallback {
  display: grid; place-items: center; color: var(--accent);
  font: 700 1.15rem/1 var(--sans);
}
.avatar-sm.avatar-fallback { font-size: 0.85rem; }

/* ---------- 登录页 ---------- */

.auth-body { display: grid; place-items: center; min-height: 100vh; padding: 1.5rem; background: var(--bg); }
.auth-wrap { width: 100%; max-width: 400px; }
.auth-card {
  padding: 1.8rem; border: 1px solid var(--line-strong); border-radius: 20px;
  background: linear-gradient(160deg, #171d25, #0f141a);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.9);
}
.auth-brand { margin-bottom: 1.6rem; }
.auth-title { margin: 0 0 0.5rem; font-size: 1.4rem; letter-spacing: -0.02em; }
.auth-sub { margin: 0 0 1.4rem; font-size: 0.88rem; color: var(--muted); }
.auth-form { display: grid; gap: 0.6rem; }
.auth-foot { margin: 1.2rem 0 0; font-size: 0.85rem; color: var(--muted); }
.auth-foot a { color: var(--muted); text-decoration: none; }
.auth-foot a:hover { color: var(--ink); }

/* ---------- 表单 ---------- */

.label { font-size: 0.85rem; color: var(--body); margin: 0.4rem 0 0.1rem; }

.input {
  width: 100%; padding: 0.65rem 0.8rem;
  background: #0a0d11; color: var(--ink);
  border: 1px solid var(--line-strong); border-radius: 10px;
  font: 400 0.94rem/1.5 var(--sans);
}
.input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.input-area { resize: vertical; min-height: 2.6rem; }
.input[type="file"] { padding: 0.5rem; font-size: 0.85rem; color: var(--muted); }

.checks { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.check { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.9rem; color: var(--body); }
.check input { accent-color: var(--accent); width: 16px; height: 16px; }

.stack { display: grid; gap: 0.55rem; }
.form-actions { display: flex; align-items: center; gap: 0.8rem; margin-top: 0.8rem; flex-wrap: wrap; }
.inline-form { display: inline; }

.grid-head, .grid-row {
  display: grid; grid-template-columns: 4.5rem 6.5rem 1fr 1fr 6rem; gap: 0.4rem;
}
.grid-head { font: 600 0.7rem/1 var(--mono); letter-spacing: 0.1em; color: var(--muted); text-transform: uppercase; padding: 0 0 0.2rem; }
.grid-row .input { padding: 0.45rem 0.5rem; font-size: 0.85rem; }

.avatar-line { display: flex; align-items: center; gap: 0.7rem; margin-top: 0.4rem; }

/* ---------- 后台 ---------- */

.admin-main { padding: clamp(1.5rem, 3vw, 2.2rem) 0 4rem; }
.admin-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 1.1rem; margin-bottom: 1.1rem; }

.panel {
  padding: 1.3rem; border: 1px solid var(--line); border-radius: 16px;
  background: var(--bg-2); margin-bottom: 1.1rem;
}
.panel-title { margin: 0 0 0.3rem; font-size: 1.08rem; letter-spacing: -0.01em; }
.panel-sub { margin: 0 0 1rem; font-size: 0.85rem; color: var(--muted); }

.table-wrap { overflow-x: auto; }
.table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: 0.9rem; }
.table th {
  text-align: left; padding: 0.55rem 0.4rem; font: 600 0.72rem/1 var(--mono);
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted);
  border-bottom: 1px solid var(--line-strong);
}
.table td { padding: 0.55rem 0.4rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
.row-actions { display: flex; gap: 0.4rem; }

.flash {
  margin: 0 0 1rem; padding: 0.75rem 1rem; border-radius: 12px;
  border: 1px solid rgba(201, 242, 77, 0.4); background: rgba(201, 242, 77, 0.1);
  color: var(--accent); font-size: 0.9rem; transition: opacity 0.6s ease;
}
.flash-bad { border-color: rgba(255, 107, 94, 0.45); background: rgba(255, 107, 94, 0.1); color: var(--danger); }
.flash.is-faded { opacity: 0.25; }

.danger-box {
  margin: 0 0 1rem; padding: 1rem 1.1rem; border-radius: 14px;
  border: 1px solid rgba(255, 107, 94, 0.45); background: rgba(255, 107, 94, 0.08);
}
.danger-box p { margin: 0 0 0.8rem; font-size: 0.92rem; color: var(--body); }

/* ---------- 页脚 ---------- */

.site-footer { padding: clamp(2.2rem, 4vw, 3.4rem) 0 1.4rem; border-top: 1px solid var(--line); background: var(--bg-2); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 2rem; }
.footer-brand { margin: 0 0 0.6rem; font-size: 1.1rem; font-weight: 800; letter-spacing: 0.12em; }
.footer-grid p { margin: 0.3rem 0; font-size: 0.88rem; color: var(--muted); }
.footer-label { margin: 0 0 0.6rem; font: 600 0.71rem/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.footer-links { display: grid; gap: 0.4rem; margin: 0; padding: 0; list-style: none; }
.footer-links a { font-size: 0.9rem; color: var(--body); text-decoration: none; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
  margin-top: 2.2rem; padding-top: 1.2rem; border-top: 1px solid var(--line);
  font-size: 0.81rem; color: var(--muted);
}
.footer-bottom p { margin: 0; }
.footer-bottom a { color: var(--muted); text-decoration: none; }
.footer-bottom a:hover { color: var(--ink); }

/* ---------- 政策类长文 ---------- */

.prose { max-width: 46rem; padding: clamp(2rem, 4vw, 3rem) 0 clamp(3rem, 6vw, 4.5rem); }
.prose h2 { margin: 2.4rem 0 0.7rem; font-size: 1.2rem; letter-spacing: -0.015em; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { font-size: 0.96rem; color: var(--body); }
.prose ul, .prose ol { padding-left: 1.2rem; }
.prose li { margin: 0.4rem 0; }
.prose strong { color: var(--ink); }
.prose a { color: var(--ink); text-underline-offset: 3px; }
.prose hr { margin: 2.2rem 0; border: 0; border-top: 1px solid var(--line); }

.callout {
  margin: 1.4rem 0; padding: 1rem 1.2rem;
  border: 1px solid rgba(201, 242, 77, 0.3); border-left-width: 3px;
  border-radius: 12px; background: rgba(201, 242, 77, 0.06);
}
.callout p { margin: 0; font-size: 0.92rem; }

/* ---------- 响应式 ---------- */

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.2rem; }
  .hero-side { order: 2; }
  .pillars, .cards, .steps { grid-template-columns: repeat(2, 1fr); }
  .roster { grid-template-columns: 1fr; }
  .admin-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0; display: none;
    flex-direction: column; align-items: stretch; gap: 0.15rem;
    padding: 0.9rem 1.25rem 1.2rem;
    background: var(--bg); border-bottom: 1px solid var(--line);
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 0.8rem 0.9rem; font-size: 1rem; border-radius: 10px; }
  .nav .btn { margin: 0.6rem 0 0; }

  .session { grid-template-columns: 1fr; gap: 0.5rem; padding: 1.2rem 0.2rem; }
  .session-meta { justify-content: flex-start; }

  .grid-head { display: none; }
  .grid-row { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .hero-facts { gap: 1.5rem; }
  .pillars, .cards, .steps { grid-template-columns: 1fr; }
  .cta-card { flex-direction: column; align-items: stretch; gap: 1.2rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; }
  .player { flex-wrap: wrap; }
  .player-games { justify-content: flex-start; width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  html { scroll-behavior: auto; }
}