/* =========================================================
   @Rabtman · 暗色工程控制台主题
   mono-forward · github-dark 底 · 锐绿强调 · 克制留白
   ========================================================= */

:root {
  /* 色板 */
  --bg:        #0a0d12;
  --bg-1:      #0d1117;
  --panel:     #11161d;
  --panel-2:   #141b24;
  --border:    #222b36;
  --border-2:  #2d3744;
  --text:      #cdd6e1;
  --text-dim:  #8b96a4;
  --text-faint:#646e7c;
  --accent:    #7ee787;  /* 主强调 绿 */
  --accent-d:  #3fb950;
  --blue:      #79c0ff;
  --amber:     #e3b341;  /* 罕用 高亮（数据） */
  --danger:    #f0883e;

  /* 字体 */
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
               'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;

  /* 尺度 */
  --maxw: 1080px;
  --gut: clamp(20px, 5vw, 56px);
  --radius: 10px;
  --nav-h: 60px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gut); }

/* ---------- 背景氛围 ---------- */
.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(126,231,135,.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(126,231,135,.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 35%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 35%, transparent 78%);
}
.bg-glow {
  position: fixed; inset: 0; z-index: -3; pointer-events: none;
  background:
    radial-gradient(700px 380px at 18% -4%, rgba(63,185,80,.10), transparent 70%),
    radial-gradient(620px 420px at 92% 8%, rgba(121,192,255,.06), transparent 72%);
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50; height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--gut);
  background: color-mix(in srgb, var(--bg-1) 78%, transparent);
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease;
}
.nav.is-scrolled { border-bottom-color: var(--border); }
.nav__brand {
  font-family: var(--font-mono); font-weight: 700; font-size: 15px;
  letter-spacing: .2px; color: var(--text);
}
.nav__prompt { color: var(--accent-d); }
.nav__caret { color: var(--accent); animation: blink 1.2s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.nav__links { display: flex; align-items: center; gap: clamp(10px, 2.4vw, 26px); }
.nav__links a {
  font-family: var(--font-mono); font-size: 13px; color: var(--text-dim);
  position: relative; padding: 4px 0; transition: color .2s ease;
}
.nav__links a:hover { color: var(--text); }
.nav__links a[data-nav]::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: -2px; height: 1.5px;
  background: var(--accent); transition: right .25s ease;
}
.nav__links a[data-nav]:hover::after,
.nav__links a[data-nav].is-active::after { right: 0; }
.nav__links a.is-active { color: var(--accent); }
.nav__cta {
  border: 1px solid var(--border-2); border-radius: 6px; padding: 5px 12px !important;
  color: var(--text) !important;
}
.nav__cta::after { display: none; }
.nav__cta:hover { border-color: var(--accent); color: var(--accent) !important; }

/* ---------- 通用 section ---------- */
.section { padding: clamp(64px, 9vw, 116px) 0; position: relative; }
.sec-head {
  font-family: var(--font-sans); font-size: clamp(22px, 3.4vw, 30px); font-weight: 700;
  letter-spacing: -.4px; margin: 0 0 clamp(28px, 4vw, 48px); color: #e7edf4;
  display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap;
}
.sec-head__idx { font-family: var(--font-mono); font-size: 14px; font-weight: 500; color: var(--accent-d); }
.sec-head__en { font-family: var(--font-mono); font-size: 13px; font-weight: 400; color: var(--text-faint); letter-spacing: 0; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh; display: flex; align-items: center;
  padding-top: var(--nav-h); position: relative;
}
.hero__kicker { font-family: var(--font-mono); font-size: 13px; color: var(--accent-d); margin: 0 0 18px; }
.hero__handle {
  font-family: var(--font-mono); font-weight: 700;
  font-size: clamp(44px, 10vw, 92px); line-height: 1.02; letter-spacing: -2px;
  margin: 0; color: #f0f6fc;
}
.hero__handle .at { color: var(--accent); }
.hero__role {
  font-size: clamp(17px, 2.6vw, 23px); font-weight: 600; color: #dbe4ee;
  margin: 18px 0 6px; letter-spacing: -.2px;
}
.hero__tagline { font-size: clamp(14px, 2vw, 16px); color: var(--text-dim); margin: 0 0 26px; max-width: 60ch; }
.hero__tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0 0 34px; }
.hero__tags li {
  font-family: var(--font-mono); font-size: 12.5px; color: var(--accent);
  border: 1px solid var(--border-2); border-radius: 100px; padding: 5px 13px;
  background: color-mix(in srgb, var(--accent) 6%, transparent);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero__note {
  font-family: var(--font-mono); font-size: 12px; color: var(--text-faint);
  margin: 26px 0 0; padding-left: 14px; border-left: 2px solid var(--border-2);
}

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: 13.5px; font-weight: 500;
  padding: 12px 20px; border-radius: 8px; border: 1px solid transparent;
  cursor: pointer; transition: transform .18s ease, box-shadow .25s ease, background .2s, border-color .2s, color .2s;
}
.btn__icon { font-size: 14px; }
.btn--primary { background: var(--accent); color: #07140a; border-color: var(--accent); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -10px rgba(126,231,135,.5); }
.btn--ghost { color: var(--text); border-color: var(--border-2); background: var(--panel); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ---------- 关于 ---------- */
.about__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; max-width: 880px; }
.about__list li {
  position: relative; padding: 12px 0 12px 40px;
  border-bottom: 1px solid var(--border); color: var(--text);
  counter-increment: about;
}
.about__list { counter-reset: about; }
.about__list li::before {
  content: counter(about, decimal-leading-zero);
  position: absolute; left: 0; top: 13px;
  font-family: var(--font-mono); font-size: 12px; color: var(--accent-d);
}
.about__list li:last-child { border-bottom: none; }
.about__list b, .about__list strong { color: var(--accent); font-weight: 600; }

/* ---------- 旗舰项目 ---------- */
.flagships { display: grid; gap: clamp(18px, 2.6vw, 26px); }
.flag {
  position: relative; background: linear-gradient(180deg, var(--panel), var(--bg-1));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: clamp(22px, 3vw, 34px); overflow: hidden;
  transition: border-color .25s ease, transform .25s ease, box-shadow .3s ease;
}
.flag::before { /* 编辑器行号侧栏质感 */
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(var(--accent), var(--accent-d)); opacity: .5; transition: opacity .25s, width .25s;
}
.flag:hover { border-color: var(--border-2); transform: translateY(-3px); box-shadow: 0 24px 50px -28px rgba(0,0,0,.8); }
.flag:hover::before { opacity: 1; width: 4px; }
.flag--feature { border-color: color-mix(in srgb, var(--accent) 32%, var(--border)); }
.flag--feature::before { opacity: .9; }

.flag__top { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 6px; }
.flag__idx { font-family: var(--font-mono); font-size: 30px; font-weight: 700; color: color-mix(in srgb, var(--accent) 70%, var(--text-faint)); line-height: 1; }
.flag__kicker { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-faint); text-transform: uppercase; letter-spacing: 1px; }
.flag__badge {
  font-family: var(--font-mono); font-size: 10.5px; color: #07140a; background: var(--accent);
  padding: 2px 8px; border-radius: 100px; font-weight: 700; letter-spacing: .3px;
}
.flag__title { font-size: clamp(19px, 2.6vw, 25px); font-weight: 700; color: #eef3f8; margin: 4px 0 10px; letter-spacing: -.3px; }
.flag__summary { color: var(--text-dim); margin: 0 0 20px; max-width: 72ch; font-size: 15px; }

.flag__points { list-style: none; margin: 0 0 18px; padding: 0; display: grid; gap: 9px; }
.flag__points li { position: relative; padding-left: 22px; color: var(--text); font-size: 14.5px; }
.flag__points li::before { content: '▸'; position: absolute; left: 0; top: 0; color: var(--accent-d); font-size: 13px; }
.flag__points b, .flag__points strong { color: var(--accent); font-weight: 600; }

.flag__metrics { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 18px; }
.metric {
  font-family: var(--font-mono); font-size: 12.5px; color: var(--text);
  border: 1px solid var(--border-2); border-radius: 7px; padding: 7px 12px;
  background: var(--panel-2); display: inline-flex; gap: 8px; align-items: center;
}
.metric .metric__v { color: var(--amber); font-weight: 700; }
.metric .metric__l { color: var(--text-faint); }

.flag__tags { display: flex; flex-wrap: wrap; gap: 7px; }
.flag__tags span {
  font-family: var(--font-mono); font-size: 11.5px; color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 5px; padding: 3px 9px; background: var(--bg-1);
}

.flag__media { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }
.flag__media img {
  height: 200px; width: auto; border-radius: 8px; border: 1px solid var(--border-2);
  background: var(--panel-2);
}
.flag__media-note { font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); align-self: flex-end; }

/* 旗舰流程图（如迁移方法论流水线） */
.flag__pipeline {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin: 0 0 20px; padding: 13px 15px;
  background: var(--bg-1); border: 1px dashed var(--border-2); border-radius: 8px;
}
.flag__pipeline .stage {
  font-family: var(--font-mono); font-size: 12px; color: var(--text-dim);
  padding: 4px 10px; border: 1px solid var(--border-2); border-radius: 6px; background: var(--panel-2);
}
.flag__pipeline .stage--end { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, var(--border-2)); }
.flag__pipeline .arrow { color: var(--accent-d); font-style: normal; font-family: var(--font-mono); }

/* ---------- 更多项目 ---------- */
.more-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.more-card {
  border: 1px solid var(--border); border-radius: 9px; padding: 20px; background: var(--panel);
  transition: border-color .2s, transform .2s;
}
.more-card:hover { border-color: var(--border-2); transform: translateY(-2px); }
.more-card__tag { font-family: var(--font-mono); font-size: 11px; color: var(--blue); margin: 0 0 8px; }
.more-card__title { font-size: 16px; font-weight: 700; color: #e7edf4; margin: 0 0 8px; }
.more-card__desc { font-size: 13.5px; color: var(--text-dim); margin: 0; }
.more-card__desc b, .more-card__desc strong { color: var(--accent); font-weight: 600; }

/* ---------- 开源 ---------- */
.oss-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.oss-card {
  border: 1px solid var(--border); border-radius: 9px; padding: 22px; background: var(--panel);
  display: flex; flex-direction: column; transition: border-color .2s, transform .2s;
}
.oss-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.oss-card__head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 6px; }
.oss-card__name { font-family: var(--font-mono); font-size: 16px; font-weight: 700; color: #e7edf4; }
.oss-card__link { font-family: var(--font-mono); font-size: 12px; color: var(--blue); }
.oss-card__link:hover { color: var(--accent); }
.oss-card__status { font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); margin: 0 0 10px; }
.oss-card__desc { font-size: 14px; color: var(--text-dim); margin: 0 0 14px; flex: 1; }
.oss-card__stack { display: flex; flex-wrap: wrap; gap: 6px; }
.oss-card__stack span {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 5px; padding: 3px 8px; background: var(--bg-1);
}

/* ---------- 技术栈 ---------- */
.stack-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.stack-col { border: 1px solid var(--border); border-radius: 9px; padding: 20px; background: var(--panel); }
.stack-col__label {
  font-family: var(--font-mono); font-size: 12px; color: var(--accent);
  margin: 0 0 14px; padding-bottom: 10px; border-bottom: 1px dashed var(--border-2);
  display: flex; align-items: center; gap: 8px;
}
.stack-col__label::before { content: '▹'; color: var(--accent-d); }
.stack-col__items { display: flex; flex-wrap: wrap; gap: 7px; }
.stack-col__items span {
  font-family: var(--font-mono); font-size: 12px; color: var(--text);
  border: 1px solid var(--border-2); border-radius: 5px; padding: 4px 10px; background: var(--bg-1);
  transition: color .15s, border-color .15s;
}
.stack-col__items span:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- 联系 ---------- */
.section--contact .wrap { max-width: 860px; }
.contact-card {
  border: 1px solid var(--border-2); border-radius: 12px; overflow: hidden; background: var(--bg-1);
}
.contact-card__bar {
  display: flex; align-items: center; gap: 8px; padding: 11px 16px;
  background: var(--panel-2); border-bottom: 1px solid var(--border);
}
.contact-card__bar i { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.dot-r { background: #ff5f56; } .dot-y { background: #ffbd2e; } .dot-g { background: #27c93f; }
.contact-card__bar span { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); margin-left: 6px; }
.contact-card__body { padding: clamp(24px, 4vw, 40px); font-family: var(--font-mono); }
.contact-card__line { color: var(--text-dim); font-size: 13.5px; margin: 0 0 6px; }
.contact-card__line .c-prompt { color: var(--accent-d); }
.contact-card__line .c-comment { color: var(--text-faint); }
.contact-card__mail {
  font-size: clamp(16px, 3vw, 22px); color: var(--accent); font-weight: 700;
  display: inline-block; margin: 14px 0 22px; word-break: break-all;
}
.contact-card__mail:hover { text-decoration: underline; }
.contact-card__ask { font-family: var(--font-sans); color: var(--text); font-size: 15px; line-height: 1.8; margin: 0 0 24px; }
.contact-card__ask b { color: var(--accent); }
.contact-card__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.contact-card__hint { margin: 12px 0 0; font-family: var(--font-mono); font-size: 11.5px; color: var(--text-faint); line-height: 1.6; }
.contact-card__alt { margin: 14px 0 0; font-family: var(--font-mono); font-size: 12px; }
.contact-card__alt a { color: var(--blue); }
.contact-card__alt a:hover { color: var(--accent); }
.btn--disabled { opacity: .55; cursor: not-allowed; background: var(--panel-2); color: var(--text-dim); border-color: var(--border-2); }
.btn--disabled:hover { transform: none; box-shadow: none; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap; }
.footer__inner span { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); }
.footer__meta { color: var(--text-faint); }

/* ---------- 揭示动画 ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s cubic-bezier(.2,.6,.2,1), transform .6s cubic-bezier(.2,.6,.2,1); }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .nav__caret { opacity: 1; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 760px) {
  body { font-size: 15px; }
  .nav__links a:not(.nav__cta):nth-child(3),
  .nav__links a:not(.nav__cta):nth-child(4) { display: none; } /* 窄屏精简次要锚点 */
  .hero { min-height: 92svh; }
  .footer__inner { justify-content: flex-start; }
  .flag__media img { height: 150px; }
}
@media (max-width: 480px) {
  .nav__links { gap: 12px; }
  .nav__links a:not(.nav__cta):nth-child(2),
  .nav__links a:not(.nav__cta):nth-child(5) { display: none; }
}