:root{
  --bg:#f4f5fb;
  --bg-soft:#ffffff;
  --bg-card:#ffffff;
  --bg-card-alt:#fafafd;
  --text:#222233;
  --text-soft:#55556b;
  --text-mute:#8a8aa0;
  --line:#e6e6f0;
  --line-soft:#ececf4;
  --brand:#e94560;
  --brand-dark:#c2334d;
  --brand-soft:#ff8fa3;
  --accent:#50c878;
  --nav-bg:rgba(26,26,46,.92);
  --nav-solid:#1a1a2e;
  --nav-text:#e8e8f0;
  --foot-bg:#12121f;
  --foot-text:#b8b8cc;
  --shadow-sm:0 2px 10px rgba(20,20,50,.05);
  --shadow-md:0 8px 26px rgba(20,20,50,.10);
  --shadow-lg:0 16px 44px rgba(20,20,50,.16);
  --radius:16px;
  --radius-sm:10px;
  --glass:rgba(255,255,255,.55);
  --glass-border:rgba(255,255,255,.65);
  --hero-grad:linear-gradient(135deg,#1a1a2e 0%,#3a1c3f 55%,#5c1f3a 100%);
  --hero-glow:radial-gradient(circle at 82% 18%,rgba(233,69,96,.38),transparent 55%),radial-gradient(circle at 12% 88%,rgba(80,200,120,.20),transparent 52%);
  --transition:.32s cubic-bezier(.22,.61,.36,1);
}

@media(prefers-color-scheme:dark){
  :root{
    --bg:#0e0e18;
    --bg-soft:#151522;
    --bg-card:#181826;
    --bg-card-alt:#1b1b2b;
    --text:#e9e9f4;
    --text-soft:#b9b9cc;
    --text-mute:#84849c;
    --line:#2a2a3e;
    --line-soft:#242438;
    --brand:#ff6b83;
    --brand-dark:#ff8fa3;
    --brand-soft:#ff9db0;
    --nav-bg:rgba(14,14,24,.88);
    --nav-solid:#0e0e18;
    --nav-text:#dcdcec;
    --foot-bg:#08080f;
    --foot-text:#9a9ab2;
    --shadow-sm:0 2px 10px rgba(0,0,0,.35);
    --shadow-md:0 8px 26px rgba(0,0,0,.45);
    --shadow-lg:0 16px 44px rgba(0,0,0,.55);
    --glass:rgba(24,24,38,.55);
    --glass-border:rgba(255,255,255,.10);
    --hero-grad:linear-gradient(135deg,#0b0b16 0%,#241228 55%,#3a1226 100%);
    --hero-glow:radial-gradient(circle at 82% 18%,rgba(255,107,131,.30),transparent 55%),radial-gradient(circle at 12% 88%,rgba(80,200,120,.16),transparent 52%);
  }
  body{color-scheme:dark;}
}

*{margin:0;padding:0;box-sizing:border-box}

html{
  scroll-behavior:smooth;
  scroll-padding-top:84px;
  -webkit-text-size-adjust:100%;
}

body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(ellipse at 12% 0%,rgba(233,69,96,.07),transparent 45%),
    radial-gradient(ellipse at 88% 100%,rgba(80,200,120,.06),transparent 45%);
  background-attachment:fixed;
  line-height:1.8;
  font-size:16px;
  transition:background-color var(--transition),color var(--transition);
  overflow-x:hidden;
}

a{
  color:var(--brand);
  text-decoration:none;
  transition:color var(--transition),opacity var(--transition);
}
a:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}

img,svg{max-width:100%;display:block}

.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:0 20px;
}

/* ---------- Header ---------- */
header.site{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--nav-bg);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  backdrop-filter:blur(16px) saturate(160%);
  color:#fff;
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 4px 24px rgba(0,0,0,.18);
  transition:background var(--transition),box-shadow var(--transition);
}

.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:12px 0;
  flex-wrap:wrap;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-weight:700;
  font-size:20px;
  letter-spacing:.5px;
  transition:transform var(--transition);
}
.brand:hover{text-decoration:none;transform:translateY(-1px);}
.brand svg{
  width:36px;
  height:36px;
  border-radius:10px;
  filter:drop-shadow(0 4px 10px rgba(233,69,96,.45));
  transition:transform var(--transition),filter var(--transition);
}
.brand:hover svg{transform:rotate(-6deg) scale(1.06);filter:drop-shadow(0 6px 16px rgba(233,69,96,.7));}
.brand span{
  background:linear-gradient(90deg,#ffffff 0%,#ffb3c1 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}

nav.main ul{
  display:flex;
  gap:6px;
  list-style:none;
  flex-wrap:wrap;
}
nav.main a{
  display:inline-block;
  color:var(--nav-text);
  font-size:15px;
  padding:6px 10px;
  border-radius:8px;
  position:relative;
  transition:color var(--transition),background var(--transition);
}
nav.main a::after{
  content:"";
  position:absolute;
  left:10px;
  right:10px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-soft));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--transition);
}
nav.main a:hover{
  color:var(--brand-soft);
  text-decoration:none;
  background:rgba(255,255,255,.06);
}
nav.main a:hover::after{transform:scaleX(1);}

.search-box{
  display:flex;
  align-items:center;
  gap:6px;
}
.search-box input{
  padding:8px 12px;
  border-radius:9px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.08);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  color:#fff;
  font-size:14px;
  width:160px;
  transition:border-color var(--transition),background var(--transition),box-shadow var(--transition),width var(--transition);
}
.search-box input::placeholder{color:rgba(255,255,255,.55);}
.search-box input:focus{
  outline:none;
  border-color:var(--brand-soft);
  background:rgba(255,255,255,.14);
  box-shadow:0 0 0 3px rgba(233,69,96,.22);
  width:190px;
}
.search-box button{
  padding:8px 16px;
  border:none;
  border-radius:9px;
  background:linear-gradient(135deg,#e94560,#b32d47);
  color:#fff;
  cursor:pointer;
  font-size:14px;
  font-weight:600;
  transition:transform var(--transition),box-shadow var(--transition),filter var(--transition);
  box-shadow:0 4px 14px rgba(233,69,96,.35);
}
.search-box button:hover{
  transform:translateY(-2px);
  filter:brightness(1.08);
  box-shadow:0 8px 22px rgba(233,69,96,.5);
}
.search-box button:active{transform:translateY(0) scale(.97);}

.menu-toggle{
  display:none;
  background:linear-gradient(135deg,#e94560,#b32d47);
  color:#fff;
  border:none;
  padding:9px 14px;
  border-radius:9px;
  cursor:pointer;
  font-size:14px;
  font-weight:600;
  transition:transform var(--transition),box-shadow var(--transition);
}
.menu-toggle:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(233,69,96,.4);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:var(--hero-grad);
  color:#fff;
  padding:64px 0 56px;
  overflow:hidden;
  isolation:isolate;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:var(--hero-glow);
  z-index:-1;
  animation:heroFloat 14s ease-in-out infinite alternate;
}
.hero::after{
  content:"";
  position:absolute;
  inset:auto -10% -40% -10%;
  height:60%;
  background:radial-gradient(ellipse at center,rgba(255,143,163,.16),transparent 70%);
  z-index:-1;
  pointer-events:none;
}
@keyframes heroFloat{
  0%{transform:translate3d(0,0,0) scale(1);}
  100%{transform:translate3d(-2%,2%,0) scale(1.06);}
}

.hero h1{
  font-size:34px;
  line-height:1.35;
  margin-bottom:18px;
  letter-spacing:.5px;
  text-shadow:0 4px 24px rgba(0,0,0,.35);
  animation:fadeUp .8s cubic-bezier(.22,.61,.36,1) both;
}
.hero h1 .kw{
  color:var(--brand-soft);
  background:linear-gradient(90deg,#ff8fa3,#ffc2cd 60%,#8ef0b0);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  position:relative;
}
.hero p.lead{
  font-size:17px;
  color:#e2e2ee;
  max-width:820px;
  margin-bottom:14px;
  animation:fadeUp .8s cubic-bezier(.22,.61,.36,1) .08s both;
}
.hero p.lead:last-of-type{margin-bottom:0;}

.cta-row{
  margin-top:26px;
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  animation:fadeUp .8s cubic-bezier(.22,.61,.36,1) .16s both;
}

.btn{
  display:inline-block;
  padding:12px 28px;
  border-radius:11px;
  font-weight:600;
  font-size:15px;
  cursor:pointer;
  border:none;
  position:relative;
  overflow:hidden;
  transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition);
}
.btn::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.35),transparent 70%);
  transform:translateX(-120%);
  transition:transform .6s ease;
}
.btn:hover::after{transform:translateX(120%);}
.btn-primary{
  background:linear-gradient(135deg,#e94560,#b32d47);
  color:#fff;
  box-shadow:0 8px 24px rgba(233,69,96,.4);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#f0596f,#c2334d);
  color:#fff;
  text-decoration:none;
  transform:translateY(-3px);
  box-shadow:0 14px 32px rgba(233,69,96,.55);
}
.btn-ghost{
  background:rgba(255,255,255,.06);
  color:#fff;
  border:1px solid rgba(255,143,163,.55);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  background:rgba(255,143,163,.16);
  color:#fff;
  text-decoration:none;
  transform:translateY(-3px);
  box-shadow:0 12px 28px rgba(255,143,163,.25);
}

.hero-stats{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
  margin-top:34px;
  animation:fadeUp .8s cubic-bezier(.22,.61,.36,1) .24s both;
}
.hero-stats .stat{
  background:rgba(255,255,255,.07);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border:1px solid rgba(255,255,255,.16);
  border-radius:16px;
  padding:16px 24px;
  min-width:158px;
  flex:1 1 158px;
  transition:transform var(--transition),background var(--transition),border-color var(--transition),box-shadow var(--transition);
}
.hero-stats .stat:hover{
  transform:translateY(-5px);
  background:rgba(255,255,255,.12);
  border-color:rgba(255,143,163,.5);
  box-shadow:0 14px 34px rgba(0,0,0,.32);
}
.hero-stats .num{
  font-size:30px;
  font-weight:700;
  line-height:1.2;
  color:var(--brand-soft);
  font-variant-numeric:tabular-nums;
  text-shadow:0 2px 18px rgba(255,143,163,.4);
}
.hero-stats .lbl{
  font-size:14px;
  color:#cfcfe0;
  margin-top:2px;
}

@keyframes fadeUp{
  from{opacity:0;transform:translateY(22px);}
  to{opacity:1;transform:translateY(0);}
}

/* ---------- Breadcrumb ---------- */
.crumb{
  background:var(--bg-soft);
  border-bottom:1px solid var(--line-soft);
  font-size:14px;
  color:var(--text-mute);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:background var(--transition),border-color var(--transition);
}
.crumb ol{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  padding:12px 0;
}
.crumb li{display:flex;align-items:center;}
.crumb li::after{content:"›";margin-left:6px;color:var(--text-mute);opacity:.6;}
.crumb li:last-child::after{content:"";margin:0;}
.crumb a{color:var(--text-soft);}
.crumb a:hover{color:var(--brand);text-decoration:none;}

/* ---------- Sections ---------- */
section.block{
  padding:60px 0;
  position:relative;
  transition:background var(--transition);
}
section.block:nth-child(even){
  background:var(--bg-soft);
}

h2.sec-title{
  font-size:27px;
  color:var(--text);
  margin-bottom:8px;
  position:relative;
  padding-left:16px;
  letter-spacing:.4px;
  line-height:1.4;
}
h2.sec-title::before{
  content:"";
  position:absolute;
  left:0;
  top:8px;
  bottom:8px;
  width:5px;
  border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--brand-soft));
  box-shadow:0 0 14px rgba(233,69,96,.5);
}
.sec-sub{
  color:var(--text-mute);
  font-size:15px;
  margin-bottom:30px;
}

h3{
  font-size:20px;
  color:var(--text);
  margin:30px 0 12px;
  line-height:1.5;
}
h4{
  font-size:17px;
  color:var(--text);
  margin:18px 0 8px;
  line-height:1.5;
}
p{
  margin-bottom:14px;
  color:var(--text-soft);
}

/* ---------- Grid & Cards ---------- */
.grid{display:grid;gap:22px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}

.card{
  background:var(--bg-card);
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow-sm);
  position:relative;
  overflow:hidden;
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition),background var(--transition);
}
.card::before{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:linear-gradient(135deg,rgba(233,69,96,.06),transparent 55%);
  opacity:0;
  transition:opacity var(--transition);
  pointer-events:none;
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:rgba(233,69,96,.28);
}
.card:hover::before{opacity:1;}
.card h3{margin-top:0;}
.card p{font-size:15px;color:var(--text-soft);margin-bottom:0;}
.card p + p{margin-top:10px;}

section.block:nth-child(even) .card{background:var(--bg-card-alt);}

/* ---------- Article list ---------- */
.article-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.article-item{
  background:var(--bg-card);
  border:1px solid var(--line-soft);
  border-radius:14px;
  padding:22px;
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition),background var(--transition);
  position:relative;
}
.article-item::after{
  content:"";
  position:absolute;
  left:22px;
  right:22px;
  bottom:0;
  height:3px;
  border-radius:3px 3px 0 0;
  background:linear-gradient(90deg,var(--brand),var(--brand-soft),var(--accent));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--transition);
}
.article-item:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-md);
  border-color:rgba(233,69,96,.25);
}
.article-item:hover::after{transform:scaleX(1);}
section.block:nth-child(even) .article-item{background:var(--bg-card-alt);}
.article-item .meta{
  font-size:13px;
  color:var(--text-mute);
  margin-bottom:8px;
  letter-spacing:.2px;
}
.article-item h3{
  font-size:17px;
  margin:0 0 8px;
  line-height:1.55;
  color:var(--text);
  transition:color var(--transition);
}
.article-item:hover h3{color:var(--brand);}
.article-item p{
  font-size:14px;
  color:var(--text-soft);
  margin-bottom:10px;
}
.article-item .more{
  font-size:14px;
  font-weight:600;
  color:var(--brand);
  display:inline-block;
  transition:transform var(--transition),color var(--transition);
}
.article-item:hover .more{transform:translateX(4px);color:var(--brand-dark);}

/* ---------- FAQ ---------- */
.faq-item{
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:12px;
  background:var(--bg-card);
  overflow:hidden;
  transition:border-color var(--transition),box-shadow var(--transition),background var(--transition);
}
.faq-item:hover{border-color:rgba(233,69,96,.35);box-shadow:var(--shadow-sm);}
.faq-item[open]{
  border-color:rgba(233,69,96,.4);
  box-shadow:var(--shadow-sm);
  background:var(--bg-card);
}
.faq-item summary{
  cursor:pointer;
  padding:17px 48px 17px 20px;
  font-weight:600;
  color:var(--text);
  list-style:none;
  position:relative;
  transition:color var(--transition),background var(--transition);
  user-select:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-soft));
  transform:scaleY(0);
  transform-origin:top;
  transition:transform var(--transition);
}
.faq-item[open] summary::before{transform:scaleY(1);}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  font-size:22px;
  line-height:1;
  color:var(--brand);
  font-weight:400;
  transition:transform var(--transition),color var(--transition);
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-item summary:hover{color:var(--brand);background:rgba(233,69,96,.04);}
.faq-item .ans{
  padding:0 20px 20px;
  color:var(--text-soft);
  font-size:15px;
  animation:fadeUp .35s ease both;
}

/* ---------- HowTo ---------- */
.howto-step{
  background:var(--bg-card);
  border-left:4px solid var(--brand);
  border-radius:0 14px 14px 0;
  padding:20px 24px;
  margin-bottom:14px;
  box-shadow:var(--shadow-sm);
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition),background var(--transition);
}
.howto-step:hover{
  transform:translateX(6px);
  box-shadow:var(--shadow-md);
  border-left-color:var(--accent);
}
section.block:nth-child(even) .howto-step{background:var(--bg-card-alt);}
.howto-step h4{
  margin-top:0;
  color:var(--brand);
  font-size:16px;
  letter-spacing:.3px;
}
.howto-step p{margin-bottom:0;font-size:15px;}

/* ---------- Table ---------- */
table.info{
  width:100%;
  border-collapse:collapse;
  background:var(--bg-card);
  border-radius:12px;
  overflow:hidden;
  font-size:15px;
  box-shadow:var(--shadow-sm);
}
table.info th,table.info td{
  border:1px solid var(--line-soft);
  padding:12px 16px;
  text-align:left;
  vertical-align:top;
  color:var(--text-soft);
  transition:background var(--transition);
}
table.info th{
  background:var(--bg-card-alt);
  color:var(--text);
  width:180px;
  font-weight:600;
}
table.info tr:hover td{background:rgba(233,69,96,.04);}

/* ---------- Contact ---------- */
.contact-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}
.contact-item{
  background:var(--bg-card);
  border:1px solid var(--line-soft);
  border-radius:14px;
  padding:18px 22px;
  font-size:15px;
  color:var(--text-soft);
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition),background var(--transition);
  word-break:break-word;
}
.contact-item:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:rgba(233,69,96,.3);
}
section.block:nth-child(even) .contact-item{background:var(--bg-card-alt);}
.contact-item strong{
  display:block;
  color:var(--text);
  margin-bottom:4px;
  font-size:14px;
  letter-spacing:.3px;
}

/* ---------- Tags / Sitemap ---------- */
.tag-list{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  list-style:none;
}
.tag-list li{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:22px;
  padding:7px 18px;
  font-size:14px;
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition),background var(--transition);
}
.tag-list li:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-sm);
  border-color:rgba(233,69,96,.4);
  background:rgba(233,69,96,.06);
}
.tag-list li a{color:var(--text-soft);transition:color var(--transition);}
.tag-list li:hover a{color:var(--brand);text-decoration:none;}
section.block:nth-child(even) .tag-list li{background:var(--bg-card-alt);}

/* ---------- Author box ---------- */
.author-box{
  background:var(--bg-card);
  border:1px dashed var(--line);
  border-radius:14px;
  padding:18px 22px;
  font-size:14px;
  color:var(--text-soft);
  margin-top:22px;
  line-height:1.9;
  transition:background var(--transition),border-color var(--transition);
}
.author-box strong{color:var(--text);}
section.block:nth-child(even) .author-box{background:var(--bg-card-alt);}

/* ---------- Footer ---------- */
footer.site{
  background:var(--foot-bg);
  color:var(--foot-text);
  padding:48px 0 26px;
  font-size:14px;
  position:relative;
  overflow:hidden;
}
footer.site::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-soft),var(--accent),var(--brand));
  background-size:200% 100%;
  animation:footLine 6s linear infinite;
}
@keyframes footLine{
  0%{background-position:0% 0;}
  100%{background-position:200% 0;}
}
footer.site a{color:#d8d8e8;transition:color var(--transition),transform var(--transition);display:inline-block;}
footer.site a:hover{color:var(--brand-soft);text-decoration:none;transform:translateX(3px);}
.foot-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
  margin-bottom:30px;
}
.foot-grid h4{
  color:#fff;
  font-size:16px;
  margin-bottom:14px;
  position:relative;
  padding-bottom:8px;
}
.foot-grid h4::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-soft));
}
.foot-grid ul{list-style:none;}
.foot-grid li{margin-bottom:9px;line-height:1.7;word-break:break-word;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:20px;
  color:#8888a0;
  font-size:13px;
  line-height:1.9;
}
.foot-bottom p{margin-bottom:6px;color:inherit;}

/* ---------- Back to top ---------- */
.back-top{
  position:fixed;
  right:22px;
  bottom:26px;
  width:48px;
  height:48px;
  border-radius:50%;
  background:linear-gradient(135deg,#e94560,#b32d47);
  color:#fff;
  border:none;
  cursor:pointer;
  font-size:20px;
  display:none;
  align-items:center;
  justify-content:center;
  z-index:200;
  box-shadow:0 6px 20px rgba(233,69,96,.45);
  transition:transform var(--transition),box-shadow var(--transition),opacity var(--transition);
}
.back-top.show{display:flex;animation:fadeUp .3s ease both;}
.back-top:hover{
  transform:translateY(-4px) scale(1.06);
  box-shadow:0 12px 30px rgba(233,69,96,.6);
}
.back-top:active{transform:translateY(0) scale(.95);}

/* ---------- Scroll reveal ---------- */
@supports(animation-timeline:view()){
  section.block > .wrap > h2.sec-title,
  section.block > .wrap > .sec-sub{
    animation:revealUp .9s cubic-bezier(.22,.61,.36,1) both;
    animation-timeline:view();
    animation-range:entry 0% entry 42%;
  }
  .card,.article-item,.howto-step,.faq-item,.contact-item,.tag-list li{
    animation:revealUp .9s cubic-bezier(.22,.61,.36,1) both;
    animation-timeline:view();
    animation-range:entry 0% entry 38%;
  }
}
@keyframes revealUp{
  from{opacity:0;transform:translateY(26px);}
  to{opacity:1;transform:translateY(0);}
}

/* ---------- Reduced motion ---------- */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}

/* ---------- Responsive ---------- */
@media(max-width:1024px){
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .hero h1{font-size:30px;}
  .foot-grid{grid-template-columns:repeat(2,1fr);}
}

@media(max-width:900px){
  .grid-3,.grid-2,.article-list,.contact-grid{grid-template-columns:1fr;}
  nav.main{
    display:none;
    width:100%;
    order:4;
    padding-top:8px;
    border-top:1px solid rgba(255,255,255,.08);
    margin-top:8px;
  }
  nav.main.open{display:block;animation:fadeUp .3s ease both;}
  nav.main ul{flex-direction:column;gap:2px;}
  nav.main a{display:block;padding:10px 12px;}
  nav.main a::after{display:none;}
  .menu-toggle{display:block;order:3;}
  .search-box{order:2;}
  .search-box input{width:120px;}
  .search-box input:focus{width:150px;}
  .hero{padding:48px 0 44px;}
  .hero h1{font-size:26px;}
  .hero p.lead{font-size:16px;}
  .hero-stats{gap:12px;}
  .hero-stats .stat{min-width:130px;padding:14px 18px;flex:1 1 calc(50% - 6px);}
  .hero-stats .num{font-size:25px;}
  section.block{padding:46px 0;}
  h2.sec-title{font-size:23px;}
  .foot-grid{grid-template-columns:1fr;gap:22px;}
}

@media(max-width:600px){
  body{font-size:15px;}
  .wrap{padding:0 16px;}
  .brand{font-size:18px;}
  .brand svg{width:32px;height:32px;}
  .nav-inner{gap:10px;padding:10px 0;}
  .search-box{flex:1 1 100%;order:5;margin-top:8px;}
  .search-box input{width:100%;flex:1;}
  .search-box input:focus{width:100%;}
  .search-box button{flex-shrink:0;}
  .menu-toggle{order:3;padding:8px 12px;}
  .hero{padding:40px 0 38px;}
  .hero h1{font-size:22px;line-height:1.45;}
  .hero p.lead{font-size:15px;}
  .cta-row{gap:10px;}
  .btn{padding:11px 22px;font-size:14px;flex:1 1 auto;text-align:center;}
  .hero-stats .stat{min-width:calc(50% - 6px);padding:12px 16px;}
  .hero-stats .num{font-size:22px;}
  .hero-stats .lbl{font-size:13px;}
  section.block{padding:38px 0;}
  h2.sec-title{font-size:21px;padding-left:14px;}
  h3{font-size:18px;}
  .card{padding:20px;border-radius:14px;}
  .article-item{padding:18px;}
  .howto-step{padding:16px 18px;}
  .contact-item{padding:16px 18px;}
  .faq-item summary{padding:15px 44px 15px 16px;font-size:15px;}
  .faq-item .ans{padding:0 16px 16px;font-size:14px;}
  .back-top{right:14px;bottom:18px;width:44px;height:44px;font-size:18px;}
  table.info th{width:120px;}
  .author-box{padding:16px 18px;}
}

@media(max-width:380px){
  .hero-stats .stat{min-width:100%;flex:1 1 100%;}
  .hero h1{font-size:20px;}
}

/* ---------- Print ---------- */
@media print{
  header.site,.back-top,.search-box,.menu-toggle,.hero::before,.hero::after{display:none !important;}
  body{background:#fff;color:#000;}
  .card,.article-item,.faq-item,.howto-step{box-shadow:none;border:1px solid #ccc;}
  a{color:#000;text-decoration:underline;}
}