:root{
  --accent:#4a90d9; --accent-2:#38bdf8; --accent-dark:#2c6fb0;
  --bg:#f0f6fe; --bg-2:#ffffff; --bg-soft:#e4eefa;
  --card:#ffffff; --card-2:#f7fbff;
  --border:#dbe8f7; --border-2:#eaf2fc;
  --text:#0b1a2e; --text-2:#2c405a; --muted:#5d7390;
  --shadow:0 14px 44px rgba(11,26,46,.08);
  --glow:rgba(74,144,217,.25);
  --hero-bg:linear-gradient(140deg,#eaf3fe 0%,#f7fbff 50%,#e8f2ff 100%);
  --nav:rgba(255,255,255,.72);
  --radius:20px;
}
html[data-theme="dark"]{
  --accent:#5b8def; --accent-2:#38bdf8; --accent-dark:#3f6fd0;
  --bg:#080d16; --bg-2:#0e141f; --bg-soft:#111a28;
  --card:#111a2b; --card-2:#0d1622;
  --border:#1e2c42; --border-2:#16223a;
  --text:#eaf0f8; --text-2:#b9c7db; --muted:#7d90a8;
  --shadow:0 14px 44px rgba(0,0,0,.4);
  --glow:rgba(91,141,239,.35);
  --hero-bg:radial-gradient(1200px 600px at 20% -10%,#16233d 0%,transparent 55%),
            radial-gradient(900px 500px at 85% 0%,#1a2c4a 0%,transparent 50%),
            linear-gradient(160deg,#070c15 0%,#0a1220 60%,#0b1526 100%);
  --nav:rgba(12,19,32,.66);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.65;
  -webkit-font-smoothing:antialiased;
  transition:background .4s ease,color .4s ease;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.grad-text{
  background:linear-gradient(100deg,var(--accent) 0%,var(--accent-2) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  background:var(--nav);
  -webkit-backdrop-filter:blur(18px) saturate(180%);
  backdrop-filter:blur(18px) saturate(180%);
  border-bottom:1px solid transparent;
  transition:border-color .3s,box-shadow .3s,background .3s;
}
header.scrolled{border-bottom-color:var(--border);box-shadow:0 8px 30px rgba(11,26,46,.06)}
html[data-theme="dark"] header.scrolled{box-shadow:0 8px 30px rgba(0,0,0,.4)}
.nav{height:70px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{height:36px;width:auto;flex-shrink:0;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text b{font-size:17px;font-weight:800;letter-spacing:-.3px}
.brand-text span{font-size:10.5px;font-weight:600;color:var(--muted);letter-spacing:1.5px}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-links a{
  padding:9px 16px;border-radius:999px;font-size:14.5px;font-weight:600;
  color:var(--text-2);transition:.22s;
}
.nav-links a:hover{color:var(--accent);background:var(--bg-soft)}
.nav-links a.active{color:var(--accent);background:color-mix(in srgb,var(--accent) 11%,transparent)}
.nav-actions{display:flex;align-items:center;gap:8px}
.icon-btn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--border);
  background:var(--card);color:var(--text-2);cursor:pointer;
  display:grid;place-items:center;font-size:15px;position:relative;
  transition:.22s;
}
.icon-btn:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px)}
.badge-dot{
  position:absolute;top:-4px;right:-4px;min-width:17px;height:17px;padding:0 4px;
  border-radius:999px;background:#ef4444;color:#fff;font-size:10.5px;font-weight:800;
  display:grid;place-items:center;border:2px solid var(--bg-2);
}
.badge-dot.hide{display:none}
.menu-btn{display:none}

main{padding-top:70px;min-height:100vh}
.page{display:none;animation:pageIn .55s cubic-bezier(.22,.8,.3,1)}
.page.active{display:block}
@keyframes pageIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

.hero{
  position:relative;background:var(--hero-bg);
  padding:110px 0 130px;overflow:hidden;
  border-bottom:1px solid var(--border);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--border) 1px,transparent 1px),
                   linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,#000 30%,transparent 75%);
  mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,#000 30%,transparent 75%);
  opacity:.55;pointer-events:none;
}
.orb{
  position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;pointer-events:none;
  animation:float 16s ease-in-out infinite;
}
.orb.a{width:440px;height:440px;background:var(--accent);top:-120px;left:-80px}
.orb.b{width:380px;height:380px;background:var(--accent-2);top:20%;right:-100px;animation-delay:-6s;opacity:.4}
html[data-theme="dark"] .orb{opacity:.28}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-40px) scale(1.08)}}
.hero-inner{position:relative;z-index:1;max-width:820px}
.pill{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px;border-radius:999px;font-size:13.5px;font-weight:700;
  background:color-mix(in srgb,var(--accent) 12%,transparent);
  border:1px solid color-mix(in srgb,var(--accent) 28%,transparent);
  color:var(--accent);margin-bottom:26px;
}
.pill i{font-size:11px}
.hero h1{
  font-size:clamp(38px,6.2vw,68px);line-height:1.06;
  letter-spacing:-2.4px;font-weight:900;margin-bottom:24px;
}
.hero p.lead{
  font-size:clamp(16px,1.9vw,19px);color:var(--muted);max-width:640px;margin-bottom:38px;
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 28px;border-radius:14px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;transition:.26s;white-space:nowrap;
  font-family:inherit;
}
.btn-primary{
  background:linear-gradient(120deg,var(--accent),var(--accent-dark));
  color:#fff;box-shadow:0 12px 30px var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px var(--glow);filter:brightness(1.06)}
.btn-ghost{background:var(--card);border-color:var(--border);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-soft{
  background:color-mix(in srgb,var(--accent) 12%,transparent);
  border-color:color-mix(in srgb,var(--accent) 30%,transparent);
  color:var(--accent);
}
.btn-soft:hover{
  background:color-mix(in srgb,var(--accent) 20%,transparent);
  border-color:var(--accent);
  transform:translateY(-2px);
}
.btn-coffee{
  background:linear-gradient(120deg,#f59e0b,#d97706);
  color:#fff;box-shadow:0 12px 30px rgba(245,158,11,.35);
}
.btn-coffee:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(245,158,11,.45);filter:brightness(1.06)}
.hero-stats{
  display:flex;gap:56px;flex-wrap:wrap;margin-top:70px;
  padding-top:36px;border-top:1px solid var(--border);
}
.hstat b{display:block;font-size:34px;font-weight:900;letter-spacing:-1.5px;line-height:1.1}
.hstat span{font-size:13.5px;color:var(--muted);font-weight:600}

section.blk{padding:96px 0}
.sec-head{max-width:660px;margin-bottom:52px}
.sec-tag{
  font-size:12.5px;font-weight:800;letter-spacing:2.4px;text-transform:uppercase;
  color:var(--accent);margin-bottom:14px;
}
.sec-head h2{
  font-size:clamp(28px,3.6vw,42px);line-height:1.15;
  letter-spacing:-1.4px;font-weight:800;margin-bottom:16px;
}
.sec-head p{color:var(--muted);font-size:16.5px}

.proj-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:22px}
.proj{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:30px;overflow:hidden;
  transition:.32s cubic-bezier(.22,.8,.3,1);display:flex;flex-direction:column;
}
.proj::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius);
  background:linear-gradient(140deg,var(--glow),transparent 55%);
  opacity:0;transition:.32s;pointer-events:none;
}
.proj:hover{transform:translateY(-7px);border-color:color-mix(in srgb,var(--accent) 45%,transparent);box-shadow:var(--shadow)}
.proj:hover::after{opacity:1}
.proj-top{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:20px}
.proj-ico{
  width:56px;height:56px;border-radius:17px;display:grid;place-items:center;
  font-size:23px;color:#fff;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  box-shadow:0 10px 26px var(--glow);transition:.32s;
}
.proj:hover .proj-ico{transform:scale(1.07) rotate(-3deg)}
.proj h3{font-size:19.5px;font-weight:800;margin-bottom:9px;letter-spacing:-.4px}
.proj p{color:var(--muted);font-size:14.5px;flex:1;margin-bottom:20px}
.proj-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;position:relative;z-index:1}
.chips{display:flex;gap:7px;flex-wrap:wrap}
.chip{
  font-size:11.5px;font-weight:700;padding:4px 10px;border-radius:7px;
  background:var(--bg-soft);color:var(--text-2);border:1px solid var(--border-2);
}
.proj-link{
  font-size:13.5px;font-weight:800;color:var(--accent);
  display:inline-flex;align-items:center;gap:6px;transition:.22s;
}
.proj-link:hover{gap:10px}
.proj.soon{opacity:.72}
.proj.soon .proj-ico{background:linear-gradient(135deg,#94a3b8,#64748b);box-shadow:none}
.proj.soon:hover{transform:none}
.status-tag{
  font-size:11px;font-weight:800;padding:4px 9px;border-radius:7px;
  background:color-mix(in srgb,var(--accent) 13%,transparent);color:var(--accent);
}
.status-tag.soon{background:var(--bg-soft);color:var(--muted)}

.feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px}
.feat{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:32px;transition:.3s;
}
.feat:hover{transform:translateY(-5px);border-color:color-mix(in srgb,var(--accent) 40%,transparent);box-shadow:var(--shadow)}
.feat i{
  font-size:22px;width:52px;height:52px;border-radius:15px;display:grid;place-items:center;
  background:var(--bg-soft);color:var(--accent);margin-bottom:20px;
}
.feat h3{font-size:17.5px;font-weight:800;margin-bottom:10px}
.feat p{color:var(--muted);font-size:14.5px}

.timeline{position:relative;padding-left:38px}
.timeline::before{
  content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--accent),var(--accent-2),transparent);
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:42px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--card);border:2.5px solid var(--accent);box-shadow:0 0 0 4px var(--bg);
}
.tl-item:first-child::before{background:var(--accent)}
.tl-date{
  font-size:13px;font-weight:800;letter-spacing:.6px;color:var(--accent);margin-bottom:7px;
}
.tl-item h3{font-size:17.5px;font-weight:800;margin-bottom:7px;letter-spacing:-.3px}
.tl-item p{color:var(--muted);font-size:15px;max-width:680px}

.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:start}
.about-grid h2{font-size:clamp(26px,3.4vw,38px);letter-spacing:-1.2px;font-weight:800;margin-bottom:20px;line-height:1.2}
.about-grid p{color:var(--muted);margin-bottom:16px;font-size:16px}
.value-list{display:grid;gap:14px;margin-top:30px}
.value-item{display:flex;gap:13px;align-items:flex-start}
.value-item i{color:var(--accent);font-size:15px;margin-top:4px}
.value-item b{display:block;font-size:15.5px;margin-bottom:3px}
.value-item span{color:var(--muted);font-size:14px}
.info-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:32px;margin-bottom:20px;
}
.info-card h4{font-size:15px;font-weight:800;margin-bottom:18px;display:flex;align-items:center;gap:9px}
.info-card h4 i{color:var(--accent)}
.info-row{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--border-2);font-size:14.5px}
.info-row:last-child{border-bottom:none;padding-bottom:0}
.info-row span{color:var(--muted)}
.info-row b{font-weight:700;text-align:right}
.social-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:4px;
}
.social-btn{
  display:flex;align-items:center;gap:10px;
  padding:12px 14px;border-radius:12px;
  border:1px solid var(--border);background:var(--bg-soft);
  font-size:14px;font-weight:700;color:var(--text-2);
  transition:.22s;cursor:pointer;font-family:inherit;text-align:left;
}
.social-btn:hover{
  border-color:var(--accent);color:var(--accent);
  transform:translateY(-2px);box-shadow:var(--shadow);
}
.social-btn i,.social-btn .s-ico{
  width:20px;height:20px;display:grid;place-items:center;font-size:18px;flex-shrink:0;
}
.social-btn .s-ico img{width:20px;height:20px;object-fit:contain;display:block}
.social-btn .fa-tiktok{color:#000}
.social-btn .fa-bilibili{color:#00A1D6}
.social-btn .fa-weixin{color:#07C160}
html[data-theme="dark"] .social-btn .fa-tiktok{color:#fff}

/* 投喂作者卡片 */
.reward-card{
  background:linear-gradient(140deg,color-mix(in srgb,#f59e0b 10%,var(--card)),var(--card));
  border:1px solid color-mix(in srgb,#f59e0b 25%,var(--border));
  border-radius:var(--radius);padding:28px 26px;margin-bottom:20px;text-align:center;
}
.reward-card h4{
  font-size:15px;font-weight:800;margin-bottom:14px;
  display:flex;align-items:center;justify-content:center;gap:9px;
  color:#d97706;
}
.reward-card .reward-desc{
  color:var(--muted);font-size:13.5px;line-height:1.75;margin-bottom:18px;
}
.reward-card .reward-desc em{
  font-style:normal;color:#d97706;font-weight:700;
}
.reward-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  width:100%;padding:14px 22px;
  border-radius:14px;font-size:15px;font-weight:700;
  border:none;cursor:pointer;font-family:inherit;
  background:linear-gradient(120deg,#f59e0b,#d97706);
  color:#fff;box-shadow:0 12px 30px rgba(245,158,11,.35);
  transition:.26s;
}
.reward-btn:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(245,158,11,.45);filter:brightness(1.06)}
.reward-btn:active{transform:translateY(0)}

/* 赞赏方法列表 */
.reward-steps{
  margin-top:20px;padding:18px 20px;
  background:var(--bg-soft);border-radius:14px;
}
.reward-steps h5{
  font-size:14px;font-weight:800;color:var(--text);
  margin-bottom:12px;display:flex;align-items:center;gap:8px;
}
.reward-steps h5 i{color:#d97706}
.reward-steps ol{
  padding-left:20px;color:var(--muted);font-size:14px;line-height:1.9;
}
.reward-steps ol li{margin-bottom:4px}
.reward-note{
  margin-top:14px;padding:12px 16px;
  background:color-mix(in srgb,#f59e0b 8%,transparent);
  border-left:3px solid #f59e0b;border-radius:6px;
  color:var(--muted);font-size:13px;
}

.thanks-section{
  padding:72px 0 72px;
  border-top:1px solid var(--border);
  background:var(--bg-2);
  overflow:hidden;
  margin-top:64px;
}
.thanks-lane{
  position:relative;
  overflow:hidden;
  margin-bottom:18px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
}
.thanks-lane:last-child{margin-bottom:0}
.thanks-track{display:flex;gap:18px;width:max-content;align-items:stretch}
.thanks-lane.to-left  .thanks-track{animation:scrollLeft  52s linear infinite}
.thanks-lane.to-right .thanks-track{animation:scrollRight 58s linear infinite}
.thanks-lane.to-left2 .thanks-track{animation:scrollLeft  64s linear infinite}
.thanks-lane:hover .thanks-track{animation-play-state:paused}
@keyframes scrollLeft {from{transform:translateX(0)} to{transform:translateX(-50%)}}
@keyframes scrollRight{from{transform:translateX(-50%)} to{transform:translateX(0)}}

.thanks-card{
  flex-shrink:0;width:200px;
  display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:22px 18px;
  border-radius:16px;border:1px solid var(--border);background:var(--card);
  transition:.28s cubic-bezier(.22,.8,.3,1);text-align:center;
}
.thanks-card:hover{
  transform:translateY(-5px);
  border-color:color-mix(in srgb,var(--accent) 45%,transparent);
  box-shadow:var(--shadow);
}
.thanks-card .t-logo{
  width:100%;
  height:60px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background:var(--bg-soft);
  padding:10px 16px;
  overflow:hidden;
  box-sizing:border-box;
  font-size:34px;
  transition:.28s;
}
.thanks-card:hover .t-logo{transform:scale(1.05)}
.thanks-card .t-logo svg{
  width:34px;height:34px;display:block;flex-shrink:0;
}
.thanks-card .t-logo img{
  display:block;
  max-width:100%;
  max-height:44px;
  width:auto;
  height:auto;
  object-fit:contain;
}
.thanks-card h5{font-size:13.5px;font-weight:800;letter-spacing:-.2px;line-height:1.3}
.thanks-card span{font-size:11px;color:var(--muted);font-weight:600}

.t-logo.cf{color:#F6821F}
.t-logo.gh{color:var(--text)}
.t-logo.fa{color:#528DD7}
.t-logo.gg{color:#4285F4}
.t-logo.bl{color:#00A1D6}
.t-logo.person{color:var(--muted)}

@media(max-width:520px){
  .thanks-card{width:164px;padding:16px 12px}
  .thanks-card .t-logo{height:50px;padding:8px 12px;font-size:28px}
  .thanks-card .t-logo svg{width:28px;height:28px}
  .thanks-card .t-logo img{max-height:36px}
  .social-grid{grid-template-columns:1fr}
}

footer{
  background:var(--bg-2);border-top:1px solid var(--border);
  padding:56px 0 34px;
}
.foot-top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;margin-bottom:40px}
.foot-brand{max-width:320px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{color:var(--muted);font-size:14px}
.foot-cols{display:flex;gap:64px;flex-wrap:wrap}
.foot-col h5{font-size:13px;font-weight:800;letter-spacing:1px;text-transform:uppercase;color:var(--muted);margin-bottom:16px}
.foot-col a{display:block;font-size:14.5px;color:var(--text-2);margin-bottom:11px;transition:.2s}
.foot-col a:hover{color:var(--accent)}
.foot-col button{
  display:block;background:none;border:none;font:inherit;font-size:14.5px;
  color:var(--text-2);margin-bottom:11px;cursor:pointer;padding:0;text-align:left;transition:.2s;
}
.foot-col button:hover{color:var(--accent)}
.foot-bottom{
  border-top:1px solid var(--border);padding-top:24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--muted);font-size:13.5px;
}

.modal{
  position:fixed;inset:0;z-index:2000;display:none;
  align-items:center;justify-content:center;padding:24px;
}
.modal.open{display:flex}
.modal-mask{
  position:absolute;inset:0;background:rgba(8,13,22,.6);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  animation:fadeIn .25s;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal-box{
  position:relative;background:var(--bg-2);border:1px solid var(--border);
  border-radius:22px;width:100%;max-width:640px;max-height:82vh;
  display:flex;flex-direction:column;overflow:hidden;
  box-shadow:0 30px 90px rgba(0,0,0,.4);
  animation:modalIn .32s cubic-bezier(.22,.8,.3,1);
}
@keyframes modalIn{from{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:none}}
.modal-head{
  padding:22px 26px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-shrink:0;
}
.modal-head h3{font-size:17px;font-weight:800}
.modal-head .icon-btn{width:34px;height:34px;border-radius:10px}
.modal-body{padding:24px 26px;overflow-y:auto;flex:1}
.modal-body h4{font-size:15px;font-weight:800;margin:18px 0 9px}
.modal-body h4:first-child{margin-top:0}
.modal-body p,.modal-body li{color:var(--muted);font-size:14.5px;margin-bottom:10px}
.modal-body ul{padding-left:20px}
.modal-body .notice-date{font-size:12.5px;color:var(--accent);font-weight:700;margin-bottom:12px}
.modal-body .notice-text{white-space:pre-wrap;color:var(--text-2);font-size:15px}
.modal-body .qr-wrap{display:grid;place-items:center;padding:12px 0}
.modal-body .qr-wrap img{width:220px;height:220px;object-fit:contain;border-radius:12px}
.modal-body .qr-wrap p{margin-top:14px;font-size:13.5px;text-align:center}
.modal-foot{
  position:sticky;bottom:0;padding:16px 26px;border-top:1px solid var(--border);
  background:var(--bg-2);flex-shrink:0;text-align:right;
}
.notice-item{
  padding:16px;border:1px solid var(--border);border-radius:14px;margin-bottom:12px;
  cursor:pointer;transition:.22s;background:var(--card);
}
.notice-item:hover{border-color:var(--accent);transform:translateX(3px)}
.notice-item h5{font-size:15px;font-weight:800;margin-bottom:5px}
.notice-item time{font-size:12.5px;color:var(--muted);font-weight:600}

/* 赞赏协议按钮组 */
.agreement-actions{
  display:flex;gap:10px;margin-top:22px;
  padding-top:18px;border-top:1px dashed var(--border);
}
.agreement-actions .btn{flex:1}

.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,.8,.3,1),transform .7s cubic-bezier(.22,.8,.3,1)}
.reveal.in{opacity:1;transform:none}

@media(max-width:900px){
  .nav-links{
    position:fixed;top:70px;left:0;right:0;
    background:var(--bg-2);border-bottom:1px solid var(--border);
    flex-direction:column;align-items:stretch;padding:18px;gap:4px;
    transform:translateY(-130%);opacity:0;pointer-events:none;transition:.32s;
    box-shadow:var(--shadow);
  }
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{padding:13px 16px}
  .menu-btn{display:grid}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .hero-stats{gap:34px}
  .hero{padding:80px 0 90px}
  section.blk{padding:68px 0}
  .foot-cols{gap:40px}
  .modal{padding:14px}
}
@media(max-width:520px){
  .hero h1{letter-spacing:-1.4px}
  .proj-grid{grid-template-columns:1fr}
  .hero-cta .btn{width:100%}
}