/* 阿旬同学 · 通往无敌宇宙 — 公共样式（深色 + 金色 + 衬线编辑风） */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
:root{
  --bg:#0f0e0c;
  --bg-2:#1a1814;
  --bg-3:#14120f;
  --text:#f2eadc;
  --text-2:#c7bfae;
  --text-3:#8d8474;
  --text-4:#6b6355;
  --accent:#c9a36a;
  --accent-2:#8b7140;
  --accent-light:#2a2318;
  --line:#2a251e;
  --line-2:#211d17;
  --max:1120px;
}
body{
  font-family:'Inter','Noto Sans SC',-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;
}
.container{max-width:var(--max);margin:0 auto;padding:0 40px}
@media (max-width:768px){.container{padding:0 22px}}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,.font-serif{font-family:'Noto Serif SC','Songti SC',serif}

/* Light sections（奶油底）——交替背景，避免整页全黑 */
.section-light{
  --bg:#F2EADC;
  --bg-2:#FDFBF4;
  --bg-3:#E9DFCB;
  --text:#1B1611;
  --text-2:#3A3128;
  --text-3:#5A4F3E;
  --text-4:#8A7D68;
  --accent:#8B7140;
  --accent-2:#6A562E;
  --accent-light:#E9DFC9;
  --line:#DED3BD;
  --line-2:#E6DCC7;
  background:var(--bg);
  color:var(--text);
}
.section-light .paper-badge{color:var(--bg);background:var(--accent)}
.section-light .paper-card:hover,
.section-light .repo-card:hover{box-shadow:0 16px 40px rgba(27,22,17,0.12)}

/* Nav */
.nav{
  position:fixed;top:0;left:0;right:0;background:rgba(15,14,12,0.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-2);z-index:50;
}
.nav-inner{
  max-width:var(--max);margin:0 auto;padding:0 40px;
  display:flex;align-items:center;justify-content:space-between;height:60px;
}
@media (max-width:768px){.nav-inner{padding:0 22px}}
.nav-brand{
  font-family:'Noto Serif SC',serif;font-weight:700;letter-spacing:0;font-size:17px;color:var(--text);display:flex;align-items:center;gap:11px;
}
.nav-brand::before{
  content:"旬";width:28px;height:28px;border-radius:50%;background:var(--accent);
  color:#14110d;display:grid;place-items:center;font-size:14px;font-weight:700;font-family:'Noto Serif SC',serif;
}
.nav-links{display:flex;gap:30px;list-style:none;font-size:13px;font-weight:500;letter-spacing:0.04em}
.nav-links a{color:var(--text-3);text-decoration:none;transition:color .2s ease}
.nav-links a:hover{color:var(--accent);text-decoration:none}
.nav-links a.active{color:var(--accent)}
@media (max-width:720px){.nav-links{display:none}}

/* 锚点定位：抵消 fixed 导航高度，避免跳转后标题被遮挡 */
section[id]{scroll-margin-top:80px}

/* Hero */
.hero{padding:150px 0 90px;background:var(--bg);position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;top:-20%;right:-10%;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,163,106,0.10),transparent 65%);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.15fr 0.85fr;gap:72px;align-items:center;position:relative}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr;gap:48px}}
.hero-text{display:flex;flex-direction:column;gap:26px}
.eyebrow{
  font-size:12px;font-weight:600;letter-spacing:0.22em;text-transform:uppercase;
  color:var(--accent);font-family:'Inter',sans-serif;
}
.hero h1{
  font-size:clamp(46px,6.2vw,84px);line-height:1.06;letter-spacing:-0.01em;font-weight:900;color:var(--text);
}
.hero h1 .accent{color:var(--accent)}
.hero .tagline{font-size:clamp(17px,2vw,21px);font-weight:500;color:var(--text-2);line-height:1.6;letter-spacing:0.01em}
.hero-roles{display:flex;flex-wrap:wrap;gap:10px;max-width:560px}
.hero-roles span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;font-weight:500;color:var(--text-2);letter-spacing:0.01em;
  padding:8px 16px;border:1px solid var(--line);border-radius:999px;
  background:linear-gradient(180deg,var(--bg-2),var(--bg-3));
  transition:border-color .18s ease,color .18s ease;
}
.hero-roles span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);flex-shrink:0}
.hero-roles span:hover{border-color:var(--accent);color:var(--text)}
.hero p{font-size:16px;color:var(--text-3);line-height:1.85;max-width:540px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:4px}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:8px;
  font-size:14px;font-weight:600;text-decoration:none;transition:all .18s ease;border:1px solid transparent;
}
.btn-primary{background:var(--accent);color:#14110d}
.btn-primary:hover{background:var(--accent-2);color:#fff;text-decoration:none}
.btn-secondary{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.hero-photo{position:relative;justify-self:end}
@media (max-width:900px){.hero-photo{justify-self:center}}
.hero-photo img{
  width:100%;max-width:340px;border-radius:24px;display:block;
  box-shadow:0 30px 80px -20px rgba(0,0,0,0.6), 0 4px 12px rgba(0,0,0,0.3);
  border:1px solid var(--line);
}
.circle-dec{position:absolute;border-radius:50%;z-index:-1;background:var(--accent)}
.c1{width:280px;height:280px;top:30px;right:-40px;opacity:0.08}
.c2{width:160px;height:160px;bottom:70px;left:-50px;opacity:0.12}
@media (max-width:900px){.c1,.c2{display:none}}

/* Section base */
section{padding:96px 0}
@media (max-width:768px){section{padding:68px 0}}
.section-head{margin-bottom:56px;max-width:720px}
.section-head .eyebrow{margin-bottom:16px}
.section-head h2{
  font-size:clamp(30px,3.8vw,44px);line-height:1.15;letter-spacing:-0.01em;font-weight:800;
}
.section-head p{font-size:16px;color:var(--text-3);margin-top:14px;max-width:580px;line-height:1.8}

/* Stats */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line-2);border-radius:18px;overflow:hidden;border:1px solid var(--line-2);
}
@media (max-width:720px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--bg-2);padding:34px 28px}
.stat strong{
  display:block;font-size:36px;font-weight:800;letter-spacing:-0.02em;color:var(--text);margin-bottom:8px;font-family:'Noto Serif SC',serif;
}
.stat span{font-size:13px;color:var(--text-3);font-weight:500}

/* About */
.about-text{max-width:780px}
.about-text p{font-size:16px;line-height:1.95;color:var(--text-2);margin-bottom:24px}
.about-text p strong{color:var(--text);font-weight:600}
.about-text p.lead{
  font-size:19px;line-height:1.9;color:var(--text);font-weight:400;
  border-left:2px solid var(--accent);padding-left:22px;margin-bottom:30px;
}

/* Projects */
.projects{display:grid;gap:20px}
.project{
  display:block;border:1px solid var(--line-2);border-radius:20px;padding:32px 36px;
  transition:all .25s ease;background:var(--bg-2);
}
.project:hover{border-color:var(--accent-2);transform:translateY(-3px);box-shadow:0 16px 40px rgba(0,0,0,0.35)}
.project-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.project-tag{
  font-size:11px;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;
  padding:5px 11px;border-radius:6px;background:var(--accent-light);color:var(--accent);
}
.project-num{font-family:'Noto Serif SC',serif;font-size:16px;font-weight:700;color:var(--accent);letter-spacing:0.03em}
.project h3{font-size:24px;font-weight:800;letter-spacing:0;margin-bottom:10px}
.project p{font-size:15px;color:var(--text-3);line-height:1.75;margin-bottom:16px;max-width:820px}
.project-list{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:12px 24px;margin-bottom:4px}
@media (max-width:860px){.project-list{grid-template-columns:1fr}}
.project-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.55}
.project-list li::before{content:"";flex-shrink:0;width:5px;height:5px;border-radius:50%;background:var(--accent);margin-top:8px}
.project-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px;padding-top:18px;border-top:1px solid var(--line-2)}
.meta-pill{font-size:12px;color:var(--text-3);padding:6px 11px;border-radius:6px;background:var(--bg-3);border:1px solid var(--line-2);font-family:'Inter',sans-serif}

/* Open Source */
.opensource{display:flex;flex-direction:column;gap:26px}
.paper-card{
  display:block;background:var(--bg-2);border-radius:22px;padding:36px;border:1px solid var(--line-2);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  text-decoration:none;color:inherit;
}
.paper-card:hover{transform:translateY(-3px);box-shadow:0 18px 44px rgba(0,0,0,0.35);border-color:var(--accent-2);text-decoration:none}
.paper-badge{
  display:inline-block;font-size:12px;font-weight:700;color:#14110d;background:var(--accent);
  padding:6px 12px;border-radius:6px;margin-bottom:20px;font-family:'Inter',sans-serif;letter-spacing:0.04em;
}
.paper-main{display:flex;gap:26px;align-items:flex-start}
.paper-icon{flex-shrink:0;width:56px;height:56px;border-radius:14px;background:var(--bg-3);display:grid;place-items:center;color:var(--accent);border:1px solid var(--line-2)}
.paper-content{flex:1}
.paper-content h3{font-size:22px;font-weight:700;margin-bottom:10px;line-height:1.35}
.paper-content p{font-size:15px;color:var(--text-3);line-height:1.75;margin-bottom:20px}
.paper-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.paper-link{margin-left:auto;font-size:14px;font-weight:600;color:var(--accent);font-family:'Inter',sans-serif}
.repo-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.repo-card{
  display:flex;flex-direction:column;background:var(--bg-2);border-radius:18px;padding:24px;
  border:1px solid var(--line-2);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  text-decoration:none;color:inherit;
}
.repo-card:hover{transform:translateY(-4px);border-color:var(--accent-2);box-shadow:0 16px 40px rgba(0,0,0,0.35);text-decoration:none}
.repo-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.repo-icon{color:var(--text-3)}
.repo-lang{font-size:11px;font-weight:700;color:var(--accent);font-family:'Inter',sans-serif;background:var(--accent-light);padding:4px 9px;border-radius:5px}
.repo-card h4{font-size:17px;font-weight:700;margin-bottom:10px;letter-spacing:0;color:var(--text)}
.repo-card p{font-size:13px;color:var(--text-3);line-height:1.65;flex:1;margin-bottom:16px}
.repo-bottom{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--text-4);font-family:'Inter',sans-serif}
.repo-arrow{margin-left:auto;font-size:16px;color:var(--accent);font-weight:700}
@media (max-width:1024px){.repo-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:860px){
  .paper-main{flex-direction:column}
  .paper-link{margin-left:0}
  .repo-grid{grid-template-columns:1fr}
}

/* Capabilities */
.skills-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:860px){.skills-grid{grid-template-columns:1fr}}
.skill-card{
  border:1px solid var(--line-2);border-radius:18px;padding:30px;transition:all .2s ease;background:var(--bg-2);
}
.skill-card:hover{border-color:var(--accent-2);transform:translateY(-2px)}
.skill-card h3{font-size:19px;font-weight:700;margin-bottom:10px;letter-spacing:0}
.skill-card p{font-size:14px;color:var(--text-3);line-height:1.75;margin-bottom:20px}
.skill-tags{display:flex;flex-wrap:wrap;gap:6px}
.skill-tags span{font-size:11px;font-weight:600;color:var(--text-3);background:var(--bg-3);border:1px solid var(--line-2);padding:5px 10px;border-radius:5px}

/* Roles */
.role{display:grid;grid-template-columns:150px 1fr;gap:40px;padding:28px 0;border-bottom:1px solid var(--line-2)}
.role:last-child{border-bottom:none}
@media (max-width:720px){.role{grid-template-columns:1fr;gap:8px}}
.role-date{font-size:13px;color:var(--accent);font-weight:600;letter-spacing:0.04em;font-family:'Inter',sans-serif}
.role h4{font-size:19px;font-weight:700;margin-bottom:4px;letter-spacing:0}
.role-org{font-size:14px;color:var(--accent);font-weight:600;margin-bottom:8px}
.role p{font-size:14px;color:var(--text-3);line-height:1.7}

/* Contact */
.contact{
  background:var(--bg-2);border-radius:26px;padding:60px;border:1px solid var(--line-2);
  display:grid;grid-template-columns:1.2fr 0.8fr;gap:56px;align-items:center;
}
@media (max-width:860px){.contact{grid-template-columns:1fr;padding:40px;gap:40px}}
.contact h2{font-size:clamp(28px,3.2vw,40px);line-height:1.15;letter-spacing:-0.01em;font-weight:800;margin-bottom:16px}
.contact p{font-size:16px;color:var(--text-3);margin-bottom:28px;max-width:440px}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:14px}
.contact-row{display:flex;align-items:center;gap:14px;font-size:15px}
.contact-row .label{width:40px;height:40px;border-radius:10px;background:var(--bg-3);border:1px solid var(--line-2);display:grid;place-items:center;font-size:12px;font-weight:700;color:var(--accent);font-family:'Inter',sans-serif}
.contact-row a{color:var(--text);font-weight:500}
.contact-row a:hover{color:var(--accent)}
.contact-row span{color:var(--text-3)}
.qr-card{background:var(--bg-3);border-radius:16px;padding:20px;text-align:center;border:1px solid var(--line-2);flex:1;min-width:160px;max-width:200px}
.qr-card img{width:100%;max-width:160px;height:auto;display:block;margin:0 auto 12px;border-radius:8px}
.qr-card p{font-size:13px;color:var(--text-2);font-weight:600;margin:0;white-space:nowrap}
.qr-card small{display:block;font-size:11px;color:var(--text-4);margin-top:2px;letter-spacing:0.05em;white-space:nowrap}
.qr-stack{display:flex;flex-direction:row;justify-content:center;gap:20px}
@media (max-width:860px){.qr-stack{flex-direction:row;justify-content:center;flex-wrap:wrap}}

/* Footer */
footer{padding:40px 0;text-align:center;font-size:13px;color:var(--text-4);border-top:1px solid var(--line-2)}
footer a{color:var(--text-3)}

/* Reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:translateY(0)}
.delay-1{transition-delay:.1s}
.delay-2{transition-delay:.2s}
.delay-3{transition-delay:.3s}

/* ===== Skills Library（技能库列表页）===== */
.page-header{padding:150px 0 24px}
.skill-group{padding:24px 0 0}
.group-title{
  display:flex;align-items:center;gap:16px;font-size:20px;font-weight:700;margin:42px 0 24px;letter-spacing:0;
}
.group-title .g-num{font-size:12px;font-weight:700;color:var(--accent);font-family:'Inter',sans-serif;letter-spacing:0.1em}
.group-title::after{content:"";flex:1;height:1px;background:var(--line-2)}
.skill-lib-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:860px){.skill-lib-grid{grid-template-columns:1fr}}
a.skill-card{
  display:flex;flex-direction:column;gap:14px;text-decoration:none;color:inherit;cursor:pointer;
  border:1px solid var(--line-2);border-radius:18px;padding:28px;transition:all .2s ease;background:var(--bg-2);position:relative;
}
a.skill-card:hover{text-decoration:none;border-color:var(--accent-2);transform:translateY(-3px);box-shadow:0 18px 44px rgba(0,0,0,0.35)}
a.skill-card:hover .skill-name{color:var(--accent-2)}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.skill-name{font-family:'Inter',monospace;font-size:12px;font-weight:700;color:var(--accent);letter-spacing:0.02em;transition:color .2s ease}
.skill-badge{font-size:11px;font-weight:600;color:var(--accent);background:var(--accent-light);padding:4px 8px;border-radius:5px;white-space:nowrap;line-height:1;display:inline-flex;align-items:center}
a.skill-card h3{font-size:18px;font-weight:700;letter-spacing:0;margin:0}
a.skill-card .card-desc{font-size:13px;color:var(--text-3);line-height:1.7;flex:1;margin:0}
a.skill-card .skill-tags{margin:0}
.skill-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px}
.btn-sm{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:36px;padding:0 15px;border-radius:7px;box-sizing:border-box;
  font-size:13px;font-weight:600;line-height:1;white-space:nowrap;
  cursor:pointer;border:1px solid transparent;font-family:inherit;transition:all .16s ease;
}
.btn-sm.primary{background:var(--accent);color:#14110d;border-color:var(--accent)}
.btn-sm.primary:hover{background:var(--accent-2);color:#fff;text-decoration:none}
.btn-sm.ghost{background:transparent;color:var(--text-2);border-color:var(--line)}
.btn-sm.ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm svg{flex-shrink:0;display:block}

/* Install guide */
.install-guide{padding:24px 0 0}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:860px){.guide-grid{grid-template-columns:1fr}}
.guide-card{
  border:1px solid var(--line-2);border-radius:16px;padding:24px;
  display:flex;gap:16px;align-items:flex-start;background:var(--bg-2);
}
.guide-num{
  flex-shrink:0;width:34px;height:34px;border-radius:50%;background:var(--accent-light);
  color:var(--accent);display:grid;place-items:center;font-size:15px;font-weight:700;font-family:'Inter',sans-serif;
}
.guide-card h4{font-size:16px;font-weight:700;margin-bottom:4px;letter-spacing:0}
.guide-card p{font-size:13px;color:var(--text-3);line-height:1.65}
.guide-note{margin-top:20px;font-size:13px;color:var(--text-4);line-height:1.7}
.guide-note code{background:var(--bg-3);padding:2px 6px;border-radius:4px;font-family:'Inter',monospace;font-size:12px;color:var(--text-2);border:1px solid var(--line-2)}

/* Toast */
.toast{
  position:fixed;bottom:32px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--text);color:#14110d;padding:12px 20px;border-radius:10px;font-size:14px;font-weight:500;
  opacity:0;transition:all .25s ease;z-index:100;pointer-events:none;max-width:90vw;text-align:center;
  box-shadow:0 8px 30px rgba(0,0,0,0.4);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== Skill Detail（详情页）===== */
.detail-header{padding:150px 0 40px}
.back-link{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:32px;
  font-weight:500;transition:color .2s ease;
}
.back-link:hover{color:var(--accent);text-decoration:none}
.detail-top{display:flex;flex-direction:column;gap:16px;max-width:760px}
.detail-top .skill-name{font-size:14px}
.detail-top h1{font-size:clamp(34px,4.6vw,52px);line-height:1.12;font-weight:800;letter-spacing:0}
.detail-top .detail-tags{display:flex;gap:8px;flex-wrap:wrap}
.detail-body{
  max-width:760px;margin-top:44px;font-size:16px;line-height:1.95;color:var(--text-2);
}
.detail-body h2{
  font-size:24px;font-weight:800;color:var(--text);margin:44px 0 16px;letter-spacing:0;line-height:1.3;
}
.detail-body h2:first-child{margin-top:0}
.detail-body p{margin-bottom:18px}
.detail-body ul{list-style:none;margin:0 0 18px;display:flex;flex-direction:column;gap:10px}
.detail-body li{display:flex;gap:12px;line-height:1.7}
.detail-body li::before{content:"";flex-shrink:0;width:5px;height:5px;border-radius:50%;background:var(--accent);margin-top:11px}
.detail-body code{
  background:var(--bg-3);border:1px solid var(--line-2);padding:2px 7px;border-radius:5px;
  font-family:'Inter',monospace;font-size:14px;color:var(--accent);
}
.detail-body blockquote{
  border-left:3px solid var(--accent);background:var(--bg-2);padding:16px 20px;border-radius:0 10px 10px 0;
  margin:0 0 18px;color:var(--text-3);font-size:15px;
}
.detail-body .cmd-block{
  display:block;background:var(--bg-3);border:1px solid var(--line-2);border-radius:10px;
  padding:14px 18px;margin:0 0 18px;font-family:'Inter',monospace;font-size:13px;color:var(--text-2);
  overflow-x:auto;white-space:pre-wrap;word-break:break-all;
}
.detail-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:40px;max-width:760px}
.detail-nav{
  max-width:760px;margin-top:56px;padding-top:28px;border-top:1px solid var(--line-2);
  display:flex;justify-content:space-between;gap:16px;
}
.detail-nav a{
  font-size:14px;color:var(--text-3);font-weight:500;max-width:46%;
}
.detail-nav a:hover{color:var(--accent);text-decoration:none}
.detail-nav .nav-next{text-align:right;margin-left:auto}
.detail-nav .nav-label{display:block;font-size:11px;color:var(--text-4);letter-spacing:0.08em;margin-bottom:4px;font-family:'Inter',sans-serif}
.detail-notfound{padding:180px 0 120px;text-align:center}
.detail-notfound h2{font-size:28px;margin-bottom:12px}
.detail-notfound p{color:var(--text-3);margin-bottom:28px}