/*
Theme Name: Kushan 2026
Theme URI: https://kushan.net/
Description: 贵霜帝国官方网站主题 —— 深靛蓝 + 鎏金品牌色, 为《贵霜帝国 · Kushan Empire》定制。
Author: Kushan Studio
Version: 1.0.0
Template: twentytwentyfive
Text Domain: kushan-2026
*/

/* ============ 品牌变量与基础 ============ */
:root {
  --k-bg: #0a0b1c;
  --k-bg-2: #11132a;
  --k-card: #161936;
  --k-line: #2a2d52;
  --k-gold: #e8c47a;
  --k-gold-2: #c9a04e;
  --k-text: #e9eaf5;
  --k-muted: #9ea2c4;
  --k-radius: 14px;
}

body {
  background: var(--k-bg);
  color: var(--k-text);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--k-gold); }
a:hover { color: #f4dcae; }

.k-wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.k-center { text-align: center; }

/* ============ 顶部导航 ============ */
.k-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 11, 28, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--k-line);
}
.k-nav .k-wrap { display: flex; align-items: center; gap: 18px; min-height: 62px; }
.k-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .06em; color: var(--k-text); text-decoration: none; }
.k-brand img { width: 34px; height: 34px; border-radius: 50%; }
.k-brand span { font-size: 17px; }
.k-nav ul { list-style: none; margin: 0 0 0 auto; padding: 0; display: flex; gap: 6px; flex-wrap: wrap; }
.k-nav ul a {
  display: block; padding: 8px 12px; border-radius: 9px;
  color: var(--k-muted); text-decoration: none; font-size: 14px;
}
.k-nav ul a:hover, .k-nav ul a[aria-current="page"] { color: var(--k-gold); background: rgba(232, 196, 122, .09); }

/* ============ Hero ============ */
.k-hero {
  position: relative; overflow: hidden;
  padding: 74px 0 62px;
  background:
    radial-gradient(900px 460px at 50% -12%, rgba(232, 196, 122, .20), transparent 62%),
    radial-gradient(620px 420px at 88% 12%, rgba(84, 106, 214, .20), transparent 60%),
    linear-gradient(180deg, #0d0f24 0%, var(--k-bg) 72%);
  border-bottom: 1px solid var(--k-line);
}
.k-hero .k-medal { width: 190px; max-width: 46vw; margin: 0 auto 22px; display: block; filter: drop-shadow(0 12px 32px rgba(232, 196, 122, .20)); }
.k-hero h1 {
  font-size: clamp(32px, 6.4vw, 56px); line-height: 1.14; margin: 0 0 10px;
  letter-spacing: .04em;
  background: linear-gradient(180deg, #fbe9c4 8%, var(--k-gold) 46%, var(--k-gold-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.k-hero .k-latin { color: var(--k-muted); letter-spacing: .34em; font-size: clamp(11px, 1.6vw, 14px); text-transform: uppercase; margin-bottom: 18px; }
.k-hero .k-lead { max-width: 720px; margin: 0 auto 26px; color: #cfd2ea; font-size: clamp(14px, 1.9vw, 17px); line-height: 1.85; }
.k-meta { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 22px; }
.k-chip {
  border: 1px solid var(--k-line); background: rgba(255, 255, 255, .03);
  color: var(--k-muted); border-radius: 999px; padding: 5px 13px; font-size: 12.5px;
}

/* ============ 按钮 ============ */
.k-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.k-btn {
  display: inline-block; padding: 13px 28px; border-radius: 11px;
  font-weight: 700; font-size: 15.5px; text-decoration: none; letter-spacing: .02em;
  transition: transform .14s ease, box-shadow .14s ease;
}
.k-btn-primary {
  background: linear-gradient(180deg, #f2d79b, var(--k-gold-2));
  color: #241c07; box-shadow: 0 10px 26px rgba(232, 196, 122, .24);
}
.k-btn-primary:hover { transform: translateY(-2px); color: #241c07; box-shadow: 0 14px 30px rgba(232, 196, 122, .32); }
.k-btn-ghost { border: 1px solid var(--k-gold); color: var(--k-gold); }
.k-btn-ghost:hover { background: rgba(232, 196, 122, .10); color: #fbe9c4; }

/* ============ 通用区块 ============ */
.k-sec { padding: 62px 0; }
.k-sec.alt { background: linear-gradient(180deg, var(--k-bg-2), var(--k-bg)); border-top: 1px solid var(--k-line); border-bottom: 1px solid var(--k-line); }
.k-sec h2 { font-size: clamp(23px, 3.4vw, 32px); margin: 0 0 10px; color: #fff; letter-spacing: .03em; }
.k-sec .k-sub { color: var(--k-muted); margin: 0 0 34px; line-height: 1.8; max-width: 780px; }
.k-center .k-sub { margin-left: auto; margin-right: auto; }
.k-rule { width: 64px; height: 2px; margin: 0 0 20px; background: linear-gradient(90deg, var(--k-gold), transparent); }
.k-center .k-rule { margin-left: auto; margin-right: auto; }

.k-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.k-card {
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.015));
  border: 1px solid var(--k-line); border-radius: var(--k-radius);
  padding: 22px 20px;
}
.k-card h3 { margin: 0 0 9px; font-size: 17px; color: var(--k-gold); letter-spacing: .02em; }
.k-card p { margin: 0; color: #c2c6e2; font-size: 14.3px; line-height: 1.8; }
.k-card .k-tag { display: inline-block; margin-top: 12px; font-size: 12px; color: var(--k-muted); border-left: 2px solid var(--k-gold-2); padding-left: 8px; }

.k-steps { counter-reset: k; list-style: none; margin: 0; padding: 0; }
.k-steps li { position: relative; padding: 0 0 18px 46px; color: #c2c6e2; line-height: 1.85; }
.k-steps li::before {
  counter-increment: k; content: counter(k);
  position: absolute; left: 0; top: 1px; width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center; font-size: 14px; font-weight: 700; color: #241c07;
  background: linear-gradient(180deg, #f2d79b, var(--k-gold-2));
}

.k-shot { border: 1px solid var(--k-line); border-radius: 16px; overflow: hidden; background: #0d0f22; }
.k-shot img { display: block; width: 100%; height: auto; }

.k-note {
  border-left: 3px solid var(--k-gold-2); background: rgba(232, 196, 122, .06);
  border-radius: 0 10px 10px 0; padding: 14px 18px; color: #d6d9ef; font-size: 14px; line-height: 1.8;
}
.k-code {
  display: block; background: #07081a; border: 1px solid var(--k-line); border-radius: 10px;
  padding: 12px 14px; color: #cbd0f0; font-size: 12.5px; word-break: break-all; margin: 10px 0 0;
}

/* ============ 下载区 ============ */
.k-dl {
  border: 1px solid rgba(232, 196, 122, .35); border-radius: 18px; padding: 30px 26px;
  background: radial-gradient(600px 300px at 50% 0%, rgba(232,196,122,.14), transparent 70%), var(--k-bg-2);
  text-align: center;
}
.k-dl .k-ver { color: var(--k-muted); font-size: 13px; margin: 12px 0 0; }

/* ============ 页脚 ============ */
.k-foot { border-top: 1px solid var(--k-line); background: #07081a; padding: 46px 0 30px; color: var(--k-muted); }
.k-foot .k-cols { display: grid; gap: 26px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.k-foot h4 { color: var(--k-text); font-size: 14px; margin: 0 0 12px; letter-spacing: .08em; text-transform: uppercase; }
.k-foot ul { list-style: none; margin: 0; padding: 0; }
.k-foot li { margin-bottom: 8px; font-size: 13.5px; }
.k-foot a { color: var(--k-muted); text-decoration: none; }
.k-foot a:hover { color: var(--k-gold); }
.k-foot .k-copy { margin-top: 30px; padding-top: 18px; border-top: 1px solid #1b1d38; font-size: 12.5px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ============ 内页文章排版 ============ */
.k-page { padding: 44px 0 60px; }
.k-page h1 { color: #fff; font-size: clamp(26px, 4.4vw, 40px); margin: 0 0 6px; letter-spacing: .03em; }
.k-page .k-page-sub { color: var(--k-muted); margin: 0 0 30px; font-size: 15px; line-height: 1.8; }
.entry-content h2 { color: #fff; font-size: clamp(20px, 3vw, 26px); margin: 38px 0 12px; }
.entry-content h3 { color: var(--k-gold); font-size: 17.5px; margin: 26px 0 8px; }
.entry-content p, .entry-content li { color: #c8cbe6; line-height: 1.9; font-size: 15px; }
.entry-content ul, .entry-content ol { padding-left: 22px; }
.entry-content a { text-decoration: underline; text-underline-offset: 3px; }
.entry-content table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px; }
.entry-content th, .entry-content td { border: 1px solid var(--k-line); padding: 10px 12px; text-align: left; color: #c8cbe6; }
.entry-content th { background: rgba(232,196,122,.08); color: var(--k-gold); }
.entry-content blockquote { border-left: 3px solid var(--k-gold-2); margin: 20px 0; padding: 6px 18px; color: #cfd2ea; background: rgba(255,255,255,.03); }
.entry-content img { border-radius: 12px; }

/* ============ 响应式 ============ */
@media (max-width: 760px) {
  .k-nav .k-wrap { flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
  .k-nav ul { margin-left: 0; width: 100%; }
  .k-hero { padding: 52px 0 44px; }
  .k-sec { padding: 46px 0; }
  .k-btn { width: 100%; text-align: center; }
}