:root{--bg:#0B0B0D;--panel:#131316;--line:#232327;--ink:#F2EFE9;
  --muted:#A8A193;--accent:#FF6B35;--accent-dim:#ff6b3522}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
.wrap{max-width:76em;margin:0 auto;padding:0 28px}
.en{font-family:"Space Grotesk","Helvetica Neue",Arial,sans-serif;letter-spacing:.14em;text-transform:uppercase}

/* ===== header ===== */
header.site{position:sticky;top:0;z-index:10;background:rgba(11,11,13,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:32px;padding-top:16px;padding-bottom:16px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand .mark{width:36px;height:36px;border-radius:9px;background:var(--accent);color:#0B0B0D;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:19px;flex:none}
.brand .name{font-size:18px;font-weight:700;line-height:1.2}
.brand .name small{display:block;font-size:9px;color:var(--muted);letter-spacing:.22em;font-weight:400;margin-top:3px}
nav.main{margin-left:auto;display:flex;gap:26px}
nav.main a{color:var(--muted);font-size:14px;transition:color .2s}
nav.main a:hover{color:var(--ink)}
nav.main a.cta{color:var(--accent)}

/* ===== hero ===== */
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:72px 0 64px}
.hero .kicker{color:var(--accent);font-size:13px;letter-spacing:.3em;margin-bottom:22px}
.hero h1{font-size:clamp(34px,4.6vw,56px);line-height:1.25;margin:0 0 20px;font-weight:800;letter-spacing:.01em}
.hero p.sub{color:var(--muted);font-size:16px;max-width:30em;margin:0 0 34px}
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--accent);color:#0B0B0D;
  font-weight:700;font-size:15px;padding:13px 26px;border-radius:8px;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px #ff6b3540}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.hero .visual{position:relative}
.hero .visual img{width:100%;border-radius:14px;display:block;border:1px solid var(--line)}
.hero .rail{position:absolute;right:-14px;top:0;bottom:0;display:flex;flex-direction:column;justify-content:space-between;
  color:var(--muted);font-size:11px;letter-spacing:.24em;text-transform:uppercase;writing-mode:vertical-rl;padding:10px 0}
.hero .rail b{color:var(--accent);font-weight:600}
@media(max-width:900px){.hero{grid-template-columns:1fr;padding:48px 0}.hero .rail{display:none}}

/* ===== sections ===== */
section.block{padding:56px 0 8px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:28px}
.sec-head h2{font-size:24px;margin:0;font-weight:800}
.sec-head h2 em{font-style:normal;color:var(--accent)}
.sec-head .more{color:var(--muted);font-size:12px;letter-spacing:.2em}
.sec-head .more:hover{color:var(--accent)}

/* ===== article cards ===== */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:22px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden;
  transition:transform .25s,border-color .25s,box-shadow .25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);border-color:#3a3a3f;box-shadow:0 14px 40px #00000066}
.card .thumb{aspect-ratio:16/9;width:100%;object-fit:cover;display:block;border-bottom:1px solid var(--line)}
.card .pad{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card .cat{color:var(--accent);font-size:11px;letter-spacing:.18em;font-weight:700}
.card h3{margin:0;font-size:17px;line-height:1.55;font-weight:700}
.card h3 a{color:var(--ink)}
.card h3 a:hover{color:var(--accent)}
.card .excerpt{color:var(--muted);font-size:13.5px;line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.card .meta{color:#6E6A63;font-size:12px;letter-spacing:.06em}

/* ===== topics ===== */
.topics{background:var(--panel);border:1px solid var(--line);border-radius:16px;
  display:grid;grid-template-columns:1fr 1fr;overflow:hidden;margin-top:8px}
.topics .left{padding:52px 48px;border-right:1px solid var(--line);
  background:radial-gradient(ellipse at 20% 100%,#ff6b3514,transparent 60%)}
.topics .left h3{font-size:clamp(30px,3.4vw,44px);margin:0 0 14px;font-weight:800;line-height:1.2}
.topics .left p{color:var(--muted);font-size:14.5px;margin:0 0 30px;max-width:22em}
.topics .right{padding:38px 44px;display:flex;flex-direction:column;justify-content:center;gap:4px}
.topics .topic{display:flex;gap:22px;padding:16px 0;border-bottom:1px dashed var(--line);align-items:baseline}
.topics .topic:last-child{border-bottom:none}
.topics .topic .no{color:var(--accent);font-size:13px;font-weight:700;flex:none}
.topics .topic h4{margin:0 0 4px;font-size:16.5px;font-weight:700}
.topics .topic p{margin:0;color:var(--muted);font-size:13px}
@media(max-width:820px){.topics{grid-template-columns:1fr}.topics .left{border-right:none;border-bottom:1px solid var(--line);padding:36px 26px}.topics .right{padding:26px}}

/* ===== about ===== */
.about{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;margin-top:28px}
.about .card-a{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:32px 34px;display:flex;gap:24px;align-items:flex-start}
.about .avatar{width:64px;height:64px;border-radius:14px;background:linear-gradient(135deg,var(--accent),#a33a12);
  display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;color:#0B0B0D;flex:none}
.about h4{margin:0 0 4px;font-size:19px;font-weight:800}
.about .hello{color:var(--accent);font-size:11px;letter-spacing:.24em;margin-bottom:8px}
.about p.bio{color:var(--muted);font-size:14px;margin:0 0 16px}
.about .social{display:flex;gap:18px;font-size:13.5px}
.about .social a{color:var(--muted)}
.about .social a:hover{color:var(--accent)}
.about .card-t{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:28px 30px}
.about .card-t h4{margin:0 0 16px;font-size:15px;font-weight:700}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips span{border:1px solid var(--line);color:var(--muted);font-size:13px;padding:6px 14px;border-radius:999px;transition:.2s}
.chips span:hover{border-color:var(--accent);color:var(--accent)}
@media(max-width:820px){.about{grid-template-columns:1fr}}

/* ===== article page ===== */
.post-wrap{max-width:46em;margin:0 auto;padding:56px 24px 24px}
.post-meta{color:var(--muted);font-size:13px;letter-spacing:.1em;margin:18px 0 6px;display:flex;gap:14px}
.post-meta .cat{color:var(--accent);font-weight:700}
h1.post-title{font-size:clamp(28px,3.6vw,40px);line-height:1.4;margin:10px 0 0;font-weight:800}
.post-cover{margin:34px 0 0;border-radius:14px;border:1px solid var(--line);width:100%}
.post-body{margin-top:34px;font-size:16.5px}
.post-body h2{font-size:22px;margin-top:2.2em;font-weight:800;padding-left:14px;border-left:3px solid var(--accent);line-height:1.5}
.post-body h3{font-size:18px;margin-top:1.8em;font-weight:700}
.post-body p{margin:1.15em 0;color:#D8D4CC}
.post-body img{max-width:100%;height:auto;display:block;margin:2em auto;border-radius:10px;border:1px solid var(--line)}
.post-body blockquote{margin:1.4em 0;padding:4px 20px;border-left:3px solid var(--accent);
  background:var(--accent-dim);border-radius:0 8px 8px 0}
.post-body blockquote p{color:var(--ink)}
.post-body pre{background:#08080a;border:1px solid var(--line);padding:16px 18px;border-radius:10px;overflow-x:auto;font-size:14px;line-height:1.7}
.post-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
.post-body p code,.post-body li code{background:#1c1c20;padding:2px 7px;border-radius:5px;color:#ffb28c}
.post-body ul,.post-body ol{padding-left:1.6em}
.post-body li{margin:.45em 0;color:#D8D4CC}
.post-body hr{border:none;border-top:1px solid var(--line);margin:2.6em 0}
.post-body strong{color:var(--ink)}
.post-body a{border-bottom:1px dashed #ff6b3566}
.post-nav{max-width:46em;margin:56px auto 0;padding:0 24px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.post-nav a{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px 20px;color:var(--muted);font-size:14px;transition:.2s}
.post-nav a:hover{border-color:var(--accent);color:var(--ink)}
.post-nav a b{display:block;color:var(--ink);font-size:15px;margin-top:4px;line-height:1.5}
.post-nav a.next{text-align:right}
@media(max-width:640px){.post-nav{grid-template-columns:1fr}}

/* ===== wechat qr page ===== */
.qr-wrap{max-width:34em;margin:0 auto;padding:64px 24px;text-align:center}
.qr-card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:48px 32px}
.qr-card img{width:min(260px,70vw);border-radius:14px;border:1px solid var(--line)}
.qr-card h1{font-size:26px;margin:28px 0 10px;font-weight:800}
.qr-card .sub2{color:var(--muted);font-size:14.5px;margin:0 0 8px}
.qr-card .tip{color:#6E6A63;font-size:13px;margin:18px 0 0}
.qr-card .back{display:inline-block;margin-top:26px;color:var(--muted);font-size:14px}
.qr-card .back:hover{color:var(--accent)}

/* ===== footer ===== */
footer.site{border-top:1px solid var(--line);margin-top:72px;background:#08080a}
footer.site .wrap{padding-top:44px;padding-bottom:36px}
footer .fgrid{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
footer .fbrand .name{font-size:20px;font-weight:800}
footer .fbrand .name small{display:block;font-size:10px;color:var(--muted);letter-spacing:.26em;margin-top:5px;font-weight:400}
footer .fnav{display:flex;gap:22px;align-items:flex-start;font-size:13.5px}
footer .fnav a{color:var(--muted)}
footer .fnav a:hover{color:var(--accent)}
footer .icp{margin-top:34px;padding-top:20px;border-top:1px solid var(--line);
  color:#5c584f;font-size:12.5px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer .icp a{color:#5c584f}
footer .icp a:hover{color:var(--accent)}