/* ============================================================
   AICOR 官网 · 页面：方法论 Methodology
   ------------------------------------------------------------
   methodology.html 方法论页特有样式
   依赖：tokens.css、base.css、utilities.css、components/*
   ============================================================ */

.alt { background: var(--bg-1); }
.btn-ghost { padding: 15px 38px; border-radius: 100px; border: 1px solid var(--line); font-size: 15px; letter-spacing: 2px; color: var(--text-2); transition: all 0.25s; display: inline-block; margin-left: 14px; }
.btn-primary { padding: 15px 38px; border-radius: 100px; background: var(--grad); font-size: 15px; font-weight: 600; letter-spacing: 2px; color: #fff; box-shadow: 0 8px 32px rgba(79,140,255,0.35); transition: all 0.25s; display: inline-block; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
.crumb { font-size: 13px; color: var(--text-3); letter-spacing: 2px; margin-bottom: 28px; display: flex; align-items: center; gap: 10px; }
.crumb .sep { color: var(--line); }
.crumb a:hover { color: var(--text-1); }
.cta-band { text-align: center; position: relative; overflow: hidden; }
.cta-band .container { position: relative; z-index: 2; }
.cta-band::before { content: ""; position: absolute; width: 760px; height: 460px; background: radial-gradient(ellipse, rgba(79,140,255,0.12), transparent 65%); top: 50%; left: 50%; transform: translate(-50%,-50%); pointer-events: none; }
.cta-sub { color: var(--text-2); max-width: 540px; margin: 0 auto 36px; }
.cta-title { font-family: var(--serif); font-size: clamp(28px, 4vw, 44px); font-weight: 800; line-height: 1.4; margin-bottom: 16px; }
.cta-title .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.dim-card { border: 1px solid var(--line); border-radius: 16px; padding: 30px 26px; background: var(--panel); transition: all 0.3s; position: relative; }
.dim-card .dm-idx { font-family: var(--serif); font-size: 15px; font-weight: 800; color: var(--accent-2); letter-spacing: 2px; margin-bottom: 14px; }
.dim-card .dm-q { font-size: 12px; color: var(--text-3); letter-spacing: 1px; margin-bottom: 14px; }
.dim-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 4px; }
.dim-card li { font-size: 13px; color: var(--text-2); padding-left: 18px; position: relative; }
.dim-card li::before { content: "·"; position: absolute; left: 4px; color: var(--accent); font-weight: 700; }
.dim-card ul { list-style: none; display: flex; flex-direction: column; gap: 7px; }
.dim-card:hover { transform: translateY(-4px); border-color: rgba(45,212,191,0.4); }
.divider { height: 1px; background: linear-gradient(90deg, transparent, var(--line), transparent); }
.engine-card { border: 1px solid var(--line); border-radius: 20px; padding: 40px 38px; background: var(--panel); position: relative; overflow: hidden; transition: all 0.3s; }
.engine-card .e-formula { margin-top: 22px; padding: 14px 18px; border: 1px solid var(--line-soft); border-radius: 10px; background: rgba(255,255,255,0.02); font-family: "SF Mono", "Menlo", monospace; font-size: 13px; color: var(--accent-2); letter-spacing: 1px; }
.engine-card .e-tag { font-size: 11px; letter-spacing: 3px; color: var(--accent-2); text-transform: uppercase; margin-bottom: 14px; }
.engine-card h3 { font-family: var(--serif); font-size: 28px; font-weight: 700; margin-bottom: 14px; }
.engine-card p { font-size: 14.5px; color: var(--text-2); }
.engine-card:hover { border-color: rgba(79,140,255,0.4); transform: translateY(-4px); box-shadow: 0 20px 50px rgba(0,0,0,0.4); }
.fde-row { display: grid; grid-template-columns: 90px 1fr 300px; gap: 30px; padding: 26px 0; border-bottom: 1px solid var(--line-soft); align-items: center; }
.fde-row .f-deliv { font-size: 12.5px; color: var(--accent-2); border: 1px solid rgba(45,212,191,0.25); background: rgba(45,212,191,0.05); border-radius: 8px; padding: 10px 16px; }
.fde-row .f-deliv strong { color: var(--text-1); font-weight: 600; }
.fde-row .f-desc { font-size: 13.5px; color: var(--text-2); }
.fde-row .f-n { font-family: var(--serif); font-size: 38px; font-weight: 800; background: linear-gradient(180deg, rgba(255,255,255,0.16), rgba(255,255,255,0.02)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.fde-row h3 { font-size: 17px; font-weight: 700; margin-bottom: 3px; }
.fde-row:last-child { border-bottom: none; }
.manifesto-quote { text-align: center; max-width: 820px; margin: 0 auto; }
.manifesto-quote.mt-90 { margin-top: 90px; }
.manifesto-quote .q { font-family: var(--serif); font-size: clamp(24px, 3.2vw, 36px); font-weight: 700; line-height: 1.65; letter-spacing: 1px; }
.manifesto-quote .q em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.manifesto-quote .qs { margin-top: 22px; color: var(--text-2); font-size: 15px; }
.nav-cta { padding: 9px 22px; border: 1px solid rgba(255,255,255,0.22); border-radius: 100px; font-size: 13px; letter-spacing: 2px; color: var(--text-1) !important; transition: all 0.25s; }
.pr-card { border: 1px solid var(--line); border-radius: 16px; padding: 30px 28px; background: var(--panel); }
.pr-card .pr-k { font-family: var(--serif); font-size: 30px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 10px; }
.pr-card h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.pr-card p { font-size: 13.5px; color: var(--text-2); }
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.sec-label { display: inline-flex; align-items: center; gap: 10px; font-size: 12px; letter-spacing: 4px; text-transform: uppercase; color: var(--accent-2); font-weight: 600; margin-bottom: 20px; }
.subhero { padding: 190px 0 90px; position: relative; overflow: hidden; }
.subhero h1 { font-family: var(--serif); font-size: clamp(38px, 6vw, 68px); font-weight: 900; line-height: 1.2; letter-spacing: 2px; margin-bottom: 26px; }
.subhero h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.subhero p { font-size: clamp(15px, 1.5vw, 18px); color: var(--text-2); max-width: 680px; }
.subhero p strong { color: var(--text-1); font-weight: 600; }
.subhero-glow { position: absolute; width: 800px; height: 800px; border-radius: 50%; background: radial-gradient(circle, rgba(79,140,255,0.12) 0%, transparent 65%); top: -350px; right: -200px; pointer-events: none; animation: breathe 9s ease-in-out infinite; }
.subhero-glow.g2 { background: radial-gradient(circle, rgba(45,212,191,0.08) 0%, transparent 65%); top: auto; bottom: -450px; left: -300px; right: auto; animation-delay: -4s; }
/* ===== FDE 八步 ===== */
  .fde-steps { display: flex; flex-direction: column; gap: 0; margin-top: 54px; position: relative; }
/* ===== 原则 ===== */
  .principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 56px; }
/* ===== 双引擎卡 ===== */
  .engines { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 56px; }
/* ===== 四维重构 ===== */
  .dims { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 54px; }
/* ===== 导航下拉 ===== */
  .nav-drop { position: relative; }
/* ===== 导航二维码 ===== */
  .nav-qr { position: relative; display: inline-flex; align-items: center; gap: 8px; }
/* AIX 上标写法（AI乘） */
  sup.aix-x { font-size: 0.62em; line-height: 0; vertical-align: super; position: relative; top: -0.12em; margin-left: 1px; font-style: normal; font-weight: inherit; letter-spacing: 0; }
/* 导航联系方式 */
  .nav-right { display: flex; align-items: center; gap: 26px; }
footer { border-top: 1px solid var(--line-soft); padding: 44px 0; }
header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding: 22px 0; transition: all 0.35s ease; border-bottom: 1px solid transparent; }
nav { display: flex; gap: 38px; align-items: center; }
section { padding: 90px 0; position: relative; }
@media (max-width: 700px) {
  .btn-ghost { margin-left: 0; margin-top: 14px; }
  .dims { grid-template-columns: 1fr; }
  nav { display: none; }
  section { padding: 64px 0; }
}
@media (max-width: 980px) {
  .dims { grid-template-columns: repeat(2, 1fr); }
  .engines { grid-template-columns: 1fr; }
  .fde-row { grid-template-columns: 60px 1fr; }
  .fde-row .f-deliv { grid-column: 2; }
  .principles { grid-template-columns: 1fr; }
}