/* ============================================================
   设计令牌
   ============================================================ */
:root{
  --bg:#F7F5FA;
  --card:#FFFFFF;
  --ink:#23202B;
  --ink-2:#6E6A7A;
  --ink-3:#A09BAE;
  --line:rgba(35,32,43,.08);
  --pink:#D678A0;
  --pink-soft:rgba(214,120,160,.10);
  --purple:#8A78BE;
  --purple-soft:rgba(138,120,190,.10);
  --gold:#C9994C;
  --radius:22px;
  --shadow:0 18px 44px rgba(60,50,90,.10);
  --ease:cubic-bezier(.22,1,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:var(--pink);color:#fff}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
:focus-visible{outline:2px solid var(--pink);outline-offset:2px}

/* 滚动进度条 */
#progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--pink),var(--purple));
  z-index:120;border-radius:0 3px 3px 0;
}

/* ============================================================
   导航
   ============================================================ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 6vw;height:66px;
  transition:background .35s var(--ease),box-shadow .35s var(--ease),backdrop-filter .35s;
}
.nav.scrolled{
  background:rgba(247,245,250,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:0 1px 0 var(--line);
}
.nav-logo{font-weight:900;font-size:19px;letter-spacing:.02em}
.nav-logo span{color:var(--pink)}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{
  font-size:14px;color:var(--ink-2);font-weight:500;
  transition:color .2s var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-gh{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:#fff;
  background:var(--ink);border-radius:999px;
  padding:9px 18px;transition:transform .2s var(--ease),background .2s;
}
.nav-gh:hover{transform:translateY(-1px);background:#3A3647}
.nav-gh svg{width:15px;height:15px}

/* ============================================================
   Hero
   ============================================================ */
.hero{
  position:relative;
  min-height:100svh;
  display:flex;align-items:center;
  padding:120px 6vw 90px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(520px 420px at 78% 18%,rgba(214,120,160,.16),transparent 65%),
    radial-gradient(560px 460px at 8% 82%,rgba(138,120,190,.14),transparent 65%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(35,32,43,.055) 1px,transparent 1px);
  background-size:26px 26px;
  mask-image:radial-gradient(640px 460px at 30% 40%,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:880px}
.hero-domain{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.18em;
  color:var(--pink);background:var(--pink-soft);
  border-radius:999px;padding:7px 16px;margin-bottom:30px;
}
.hero h1{
  font-size:clamp(40px,6.4vw,68px);
  font-weight:900;line-height:1.14;letter-spacing:.01em;
}
.hero h1 .grad{
  background:linear-gradient(100deg,var(--pink) 10%,var(--purple) 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin-top:26px;font-size:clamp(15px,1.6vw,18px);
  color:var(--ink-2);max-width:560px;font-weight:300;
}
.hero-cta{display:flex;align-items:center;gap:16px;margin-top:42px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-size:15px;font-weight:700;border-radius:999px;
  padding:13px 28px;transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-pink{
  color:#fff;
  background:linear-gradient(100deg,var(--pink),#C98AA6 55%,var(--purple));
  box-shadow:0 10px 26px rgba(214,120,160,.34);
}
.btn-pink:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(214,120,160,.42)}
.btn-ghost{
  color:var(--ink);border:1.5px solid var(--line);background:var(--card);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(138,120,190,.45)}
.btn svg{width:16px;height:16px}
.hero-hint{
  position:absolute;left:50%;bottom:34px;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  color:var(--ink-3);font-size:12px;letter-spacing:.14em;
}
.hero-hint .mouse{
  width:22px;height:36px;border:1.5px solid var(--ink-3);border-radius:12px;
  position:relative;
}
.hero-hint .mouse::after{
  content:"";position:absolute;left:50%;top:7px;width:3px;height:7px;
  margin-left:-1.5px;border-radius:3px;background:var(--pink);
  animation:wheel 1.8s var(--ease) infinite;
}
@keyframes wheel{
  0%{transform:translateY(0);opacity:1}
  70%{transform:translateY(12px);opacity:0}
  100%{transform:translateY(0);opacity:0}
}

/* 入场编排 */
.rise{opacity:0;transform:translateY(26px)}
.hero .rise{animation:riseIn .8s var(--ease) forwards}
.hero .d1{animation-delay:.05s}
.hero .d2{animation-delay:.16s}
.hero .d3{animation-delay:.27s}
.hero .d4{animation-delay:.38s}
.hero .d5{animation-delay:.52s}
@keyframes riseIn{to{opacity:1;transform:none}}

/* ============================================================
   通用区块
   ============================================================ */
.section{padding:110px 6vw}
.section-head{margin-bottom:54px}
.section-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;
  color:var(--purple);background:var(--purple-soft);
  border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.section-head h2{font-size:clamp(28px,3.6vw,40px);font-weight:900;letter-spacing:.01em}
.section-head p{margin-top:10px;color:var(--ink-2);font-size:15px;font-weight:300;max-width:520px}

/* ============================================================
   技术文章 · 横向走带
   ============================================================ */
.articles{position:relative;background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.articles .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.stripe-nav{display:flex;gap:10px}
.stripe-btn{
  width:46px;height:46px;border-radius:50%;
  border:1.5px solid var(--line);background:var(--bg);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .2s,color .2s,transform .2s var(--ease);
}
.stripe-btn:hover{background:var(--pink);border-color:var(--pink);color:#fff;transform:translateY(-2px)}
.stripe-btn svg{width:18px;height:18px}
.stripe-viewport{overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-top:8px;padding-bottom:10px;cursor:grab}
.stripe-viewport::-webkit-scrollbar{display:none}
.stripe-viewport.dragging{cursor:grabbing;scroll-snap-type:none}
.stripe{
  display:flex;gap:22px;width:max-content;
  padding-left:2px;padding-right:20px;
}
.card-a{
  scroll-snap-align:start;flex:0 0 330px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;display:flex;flex-direction:column;gap:14px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s;
}
.card-a:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(214,120,160,.35)}
.card-a-top{display:flex;align-items:center;justify-content:space-between}
.card-a-num{font-size:12px;font-weight:900;color:var(--pink);letter-spacing:.1em}
.card-a-cat{font-size:11px;font-weight:700;color:var(--ink-2);background:var(--card);border:1px solid var(--line);border-radius:999px;padding:4px 11px}
.card-a h3{font-size:18px;font-weight:700;line-height:1.45;min-height:52px}
.card-a p{font-size:13px;color:var(--ink-2);font-weight:300;flex:1}
.card-a-foot{display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--line)}
.card-a-date{font-size:12px;color:var(--ink-3)}
.card-a-more{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;color:var(--ink);transition:color .2s,gap .2s var(--ease)}
.card-a:hover .card-a-more{color:var(--pink);gap:9px}
.card-a-more svg{width:13px;height:13px}

/* ============================================================
   项目展示 · 视差卡片
   ============================================================ */
.projects{position:relative}
.project{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:var(--card);border:1px solid var(--line);border-radius:30px;
  overflow:hidden;margin-bottom:34px;
  transition:box-shadow .3s var(--ease);
}
.project:hover{box-shadow:var(--shadow)}
.project:nth-child(even){direction:rtl}
.project:nth-child(even)>*{direction:ltr}
.project-media{position:relative;min-height:320px;overflow:hidden;background:var(--bg)}
.project-media img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .6s var(--ease);
}
.project:hover .project-media img{transform:scale(1.045)}
.project-media .cover{
  position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:14px;color:#fff;
}
.cover-p{background:linear-gradient(135deg,#D678A0 0%,#8A78BE 100%)}
.cover-b{background:linear-gradient(135deg,#23202B 0%,#4A4560 100%)}
.cover-m{background:linear-gradient(135deg,#8A78BE 0%,#C9994C 100%)}
.cover svg{width:52px;height:52px;opacity:.95}
.cover-name{font-size:17px;font-weight:700;letter-spacing:.05em}
.cover-sub{font-size:12px;font-weight:300;opacity:.85;letter-spacing:.12em}
.project-body{padding:44px 46px;display:flex;flex-direction:column;gap:16px;justify-content:center}
.project-body .pk{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--purple)}
.project-body h3{font-size:27px;font-weight:900;line-height:1.3}
.project-body>p{font-size:14.5px;color:var(--ink-2);font-weight:300}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:12px;font-weight:500;color:var(--ink-2);background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:5px 13px}
.project-link{
  margin-top:6px;display:inline-flex;align-items:center;gap:8px;width:max-content;
  font-size:14px;font-weight:700;color:var(--pink);
  border-bottom:2px solid rgba(214,120,160,.3);padding-bottom:3px;
  transition:border-color .2s,gap .2s var(--ease);
}
.project-link:hover{gap:13px;border-color:var(--pink)}
.project-link svg{width:15px;height:15px}

/* ============================================================
   页脚
   ============================================================ */
.footer{
  background:var(--ink);color:rgba(255,255,255,.82);
  padding:74px 6vw 40px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px;max-width:1080px}
.footer h4{color:#fff;font-size:17px;font-weight:900;margin-bottom:18px}
.footer p{font-size:13.5px;font-weight:300;color:rgba(255,255,255,.6);max-width:300px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.68);transition:color .2s}
.footer-links a:hover{color:var(--pink)}
.footer-gh{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13.5px;font-weight:700;color:#fff;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);
  border-radius:999px;padding:10px 20px;width:max-content;
  transition:background .2s,transform .2s var(--ease);
}
.footer-gh:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.footer-gh svg{width:16px;height:16px}
.footer-bottom{
  margin-top:56px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12px;color:rgba(255,255,255,.42);font-weight:300;
}

/* 渐入（文章/项目区，由 IntersectionObserver 触发） */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:960px){
  .project{grid-template-columns:1fr}
  .project-media{min-height:240px}
  .project-body{padding:32px 30px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .nav{padding:0 5vw;height:60px}
  .nav-links{display:none}
  .hero{padding:110px 5vw 80px}
  .section{padding:80px 5vw}
  .card-a{flex-basis:78vw}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer{padding:58px 5vw 34px}
}

/* 项目链接组 */
.project-links{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-top:6px}
.project-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--pink);border-bottom:2px solid rgba(214,120,160,.3);padding-bottom:3px;transition:border-color .2s,gap .2s var(--ease)}
.project-link:hover{gap:13px;border-color:var(--pink)}
.project-link svg{width:15px;height:15px}
.project-link.gh-link{color:var(--ink-2);border-color:rgba(35,32,43,.18)}
.project-link.gh-link:hover{color:var(--ink);border-color:var(--ink)}

/* ICP 备案 */
.icp-link{color:rgba(255,255,255,.42);font-weight:300;transition:color .2s;border-bottom:1px solid rgba(255,255,255,.2)}
.icp-link:hover{color:#fff}

/* ============================================================
   文章详情 · 二级页面
   ============================================================ */
[hidden]{display:none!important}
.post-view{
  min-height:100svh;padding:120px 6vw 90px;
  background:
    radial-gradient(480px 380px at 85% 8%,rgba(214,120,160,.10),transparent 65%),
    radial-gradient(520px 420px at 6% 92%,rgba(138,120,190,.10),transparent 65%),
    var(--bg);
}
.post-wrap{max-width:760px;margin:0 auto}
.post-back{
  display:inline-flex;align-items:center;gap:9px;
  font-size:14px;font-weight:700;color:var(--ink-2);
  border:1.5px solid var(--line);background:var(--card);
  border-radius:999px;padding:10px 22px;margin-bottom:30px;
  transition:color .2s,border-color .2s,transform .2s var(--ease);
}
.post-back:hover{color:var(--pink);border-color:rgba(214,120,160,.45);transform:translateX(-3px)}
.post-back svg{width:16px;height:16px}
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:28px;
  padding:52px 56px 44px;box-shadow:0 18px 44px rgba(60,50,90,.07);
}
.post-head{margin-bottom:34px}
.post-head .card-a-cat{display:inline-block;margin-bottom:18px}
.post-head h1{font-size:clamp(26px,3.4vw,34px);font-weight:900;line-height:1.35;letter-spacing:.01em}
.post-meta{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:var(--ink-3);font-weight:300}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3)}
.post-body{font-size:15.5px;color:var(--ink-2);font-weight:300;line-height:2}
.post-body h3{
  font-size:19px;font-weight:700;color:var(--ink);
  margin:34px 0 12px;padding-left:14px;position:relative;line-height:1.5;
}
.post-body h3::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;
  border-radius:3px;background:linear-gradient(180deg,var(--pink),var(--purple));
}
.post-body p{margin:14px 0}
.post-body ul{margin:14px 0 14px 6px;padding-left:20px;list-style:none}
.post-body ul li{position:relative;padding-left:16px;margin:8px 0}
.post-body ul li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;
  border-radius:50%;background:var(--pink);
}
.post-body code.k{
  background:rgba(138,120,190,.10);color:#6A5AA8;
  border-radius:5px;padding:2px 7px;font-size:13.5px;
  font-family:"SF Mono",Menlo,Consolas,"Courier New",monospace;
}
.post-body pre{
  background:#23202B;color:#E8E4F2;border-radius:16px;
  padding:22px 24px;margin:22px 0;overflow-x:auto;
  font-size:13px;line-height:1.75;
  font-family:"SF Mono",Menlo,Consolas,"Courier New",monospace;
}
.post-body pre .c{color:#8A849C}
.post-body strong{color:var(--ink);font-weight:700}
.post-nav{
  display:flex;justify-content:space-between;gap:16px;
  margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}
.post-nav a{
  font-size:13.5px;font-weight:700;color:var(--ink-2);
  display:inline-flex;align-items:center;gap:8px;
  transition:color .2s;
}
.post-nav a:hover{color:var(--pink)}
.post-nav svg{width:14px;height:14px}
@media (max-width:640px){
  .post-view{padding:100px 5vw 70px}
  .post-card{padding:34px 24px 30px}
}

/* 减少动效偏好 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}
  html{scroll-behavior:auto}
  .rise,.reveal{opacity:1;transform:none}
}