@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;700;900&display=swap');

:root{
  --ink:#192617;
  --ink-2:#213325;
  --ink-3:#2a4130;
  --neon:#87ff71;
  --lemon:#ffce5c;
  --paper:#f0ffe8;
  --muted:#a9c4a4;
  --radius:18px;
  --font:'Outfit',ui-sans-serif,system-ui,-apple-system,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --shadow:0 10px 0 -6px rgba(0,0,0,.45),0 22px 42px -22px rgba(0,0,0,.85);
}

*,*::before,*::after{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  overflow-x:hidden;
  font-family:var(--font);
  font-size:17px;
  line-height:1.72;
  color:var(--paper);
  background-color:var(--ink);
  background-image:
    radial-gradient(rgba(135,255,113,.13) 1.4px,transparent 1.5px),
    linear-gradient(160deg,rgba(255,206,92,.06),transparent 62%);
  background-size:26px 26px,100% 100%;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  mix-blend-mode:screen;
  background:
    radial-gradient(circle at 90% 10%,rgba(255,206,92,.16),transparent 24%),
    radial-gradient(circle at 4% 72%,rgba(135,255,113,.14),transparent 20%);
}

:focus-visible{outline:3px solid var(--lemon);outline-offset:3px}

.page{
  position:relative;
  z-index:1;
  max-width:1160px;
  margin:0 auto;
  padding:0 20px;
}

/* 顶栏 */
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:14px 0 10px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:48px;
  text-decoration:none;
  color:var(--paper);
}

.brand-mark{
  display:block;
  width:40px;
  height:40px;
  flex:0 0 40px;
  object-fit:cover;
  background:var(--neon);
  background-image:linear-gradient(135deg,var(--neon),var(--lemon));
  clip-path:polygon(50% 0,100% 32%,84% 100%,16% 100%,0 32%);
  transform:rotate(-4deg);
}

.brand-name{
  font-size:20px;
  font-weight:900;
  letter-spacing:.06em;
  line-height:1.2;
}

.contact{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 18px;
  border:2px dashed var(--lemon);
  border-radius:999px;
  color:var(--lemon);
  font-weight:700;
  font-size:16px;
  text-decoration:none;
  transition:transform .2s ease,background-color .2s ease,color .2s ease;
}

.contact:hover,.contact:focus-visible{
  background:var(--lemon);
  color:var(--ink);
  transform:rotate(-2deg);
}

/* 菜单条 */
.menubar{
  position:sticky;
  top:0;
  z-index:30;
  margin:0 -20px;
  padding:8px 20px;
  background:rgba(25,38,23,.93);
  -webkit-backdrop-filter:blur(9px);
  backdrop-filter:blur(9px);
  border-bottom:2px dashed rgba(135,255,113,.45);
}

.nav-list{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0;
  padding:0;
}

.nav-group{position:relative}

.nav-link{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 16px;
  border:2px solid rgba(135,255,113,.35);
  border-radius:999px;
  color:var(--paper);
  font-size:16px;
  font-weight:700;
  letter-spacing:.02em;
  text-decoration:none;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}

.nav-link:hover,.nav-link:focus-visible{
  background:var(--neon);
  border-color:var(--neon);
  color:var(--ink);
  transform:translateY(-2px) rotate(-1.5deg);
}

.is-trigger::after{
  content:"";
  width:7px;
  height:7px;
  margin-left:9px;
  border-right:2px solid currentColor;
  border-bottom:2px solid currentColor;
  transform:rotate(45deg) translateY(-2px);
}

.nav-drop{
  position:absolute;
  left:0;
  top:calc(100% + 8px);
  min-width:196px;
  display:none;
  flex-direction:column;
  gap:6px;
  margin:0;
  padding:10px;
  list-style:none;
  background:var(--ink-2);
  border:2px dashed var(--lemon);
  border-radius:14px;
  box-shadow:var(--shadow);
}

.nav-drop .nav-link{
  width:100%;
  min-height:44px;
  border-color:transparent;
  border-radius:11px;
}

.nav-group:hover .nav-drop,
.nav-group:focus-within .nav-drop{display:flex}

/* 主体栅格 */
.shell{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:32px;
  padding:22px 0 8px;
}

main{min-width:0}

/* 首屏 */
.hero{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:16px;
  min-height:45vh;
  padding:26px 0 30px;
  text-align:center;
}

.hero-text{max-width:100%}

.hero-title{
  margin:0;
  font-size:clamp(30px,6.2vw,54px);
  font-weight:900;
  line-height:1.16;
  letter-spacing:.01em;
  text-wrap:balance;
}

.hero-title::after{
  content:"";
  display:block;
  width:88px;
  height:10px;
  margin:16px auto 0;
  background:var(--lemon);
  clip-path:polygon(0 0,100% 14%,95% 100%,5% 86%);
}

.hero-art{
  position:relative;
  width:104px;
  height:104px;
  flex:0 0 104px;
}

.sh{position:absolute;display:block}

.sh-a{
  left:2px;top:2px;
  width:64px;height:64px;
  background:var(--neon);
  clip-path:polygon(50% 0,100% 100%,0 100%);
  transform:rotate(-8deg);
}

.sh-b{
  right:0;bottom:2px;
  width:54px;height:54px;
  border-radius:50%;
  background:var(--lemon);
  mix-blend-mode:screen;
  opacity:.92;
}

.sh-c{
  right:8px;top:0;
  width:40px;height:40px;
  border:4px dashed var(--neon);
  border-radius:9px;
  transform:rotate(14deg);
}

.hero-img{
  width:104px;
  height:104px;
  object-fit:cover;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transform:rotate(-3deg);
}

/* 正文区块 */
div > article{
  scroll-margin-top:118px;
  padding:34px 0;
  border-top:2px dashed rgba(135,255,113,.28);
}

div > article:first-of-type{border-top:0}

div h2{
  margin:0 0 6px;
  font-size:clamp(23px,3.4vw,32px);
  font-weight:900;
  line-height:1.26;
  letter-spacing:.01em;
}

div h2::before{
  content:"";
  display:inline-block;
  width:14px;
  height:14px;
  margin-right:10px;
  background:var(--neon);
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
  transform:rotate(-6deg);
}

div h3{
  margin:26px 0 8px;
  font-size:20px;
  font-weight:700;
  line-height:1.4;
}

div h2 + hr,
div h3 + hr{
  width:74px;
  height:0;
  margin:0 0 18px;
  border:0;
  border-top:4px dotted var(--lemon);
}

div hr{
  width:100%;
  height:0;
  margin:24px 0;
  border:0;
  border-top:2px dotted rgba(135,255,113,.4);
}

div p{margin:0 0 1.05em}

div a{
  color:var(--neon);
  text-decoration:underline;
  text-decoration-thickness:2px;
  text-underline-offset:4px;
  transition:color .18s ease,background-color .18s ease;
}

div a:hover{color:var(--ink);background:var(--neon)}

div ul,div ol{margin:0 0 1.1em;padding-left:0}

div ul{list-style:none}

div ul li{position:relative;padding-left:26px;margin:.42em 0}

div ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.62em;
  width:10px;
  height:10px;
  background:var(--lemon);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}

div ol{list-style:none;counter-reset:num}

div ol li{position:relative;padding-left:34px;margin:.42em 0;counter-increment:num}

div ol li::before{
  content:counter(num);
  position:absolute;
  left:0;
  top:.1em;
  width:24px;
  height:24px;
  display:grid;
  place-items:center;
  border-radius:8px;
  background:var(--neon);
  color:var(--ink);
  font-weight:900;
  font-size:14px;
  transform:rotate(-4deg);
}

div img{
  max-width:100%;
  height:auto;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}

div figure{margin:0 0 1.2em}

div blockquote{
  margin:0 0 1.2em;
  padding:14px 18px;
  border-left:6px dotted var(--lemon);
  border-radius:0 var(--radius) var(--radius) 0;
  background:rgba(33,51,37,.75);
  color:var(--paper);
}

div blockquote p:last-child{margin:0}

div strong{color:var(--lemon)}

div table{
  width:100%;
  border-collapse:collapse;
  margin:0 0 1.2em;
  font-size:16px;
}

div th,div td{
  padding:10px 12px;
  border:2px dashed rgba(135,255,113,.3);
  text-align:left;
}

div th{background:rgba(135,255,113,.14);color:var(--neon)}

/* 右栏 */
.rail{
  align-self:start;
  padding:18px;
  border:2px dashed rgba(255,206,92,.5);
  border-radius:var(--radius);
  background:rgba(33,51,37,.72);
  box-shadow:var(--shadow);
}

.rail h2{
  margin:0 0 4px;
  font-size:18px;
  font-weight:900;
  letter-spacing:.1em;
}

.rail hr{
  width:46px;
  height:0;
  margin:0 0 12px;
  border:0;
  border-top:4px dotted var(--neon);
}

.rail ul{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:2px;
  margin:0 0 10px;
  padding:0;
}

.rail a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 10px;
  border-radius:11px;
  color:var(--paper);
  font-size:16px;
  font-weight:700;
  text-decoration:none;
  transition:background-color .18s ease,color .18s ease,transform .18s ease;
}

.rail a:hover,.rail a:focus-visible{
  background:var(--neon);
  color:var(--ink);
  transform:translateX(3px);
}

.rail .totop{
  justify-content:center;
  border:2px solid rgba(135,255,113,.4);
  color:var(--neon);
  letter-spacing:.08em;
}

.rail .totop:hover{background:var(--lemon);border-color:var(--lemon);color:var(--ink)}

/* 页脚 */
footer{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:10px;
  margin-top:44px;
  padding:32px 0 26px;
  border-top:2px dashed rgba(135,255,113,.42);
}

.foot-brand{
  margin:0;
  font-size:clamp(34px,8.4vw,66px);
  font-weight:900;
  line-height:1;
  letter-spacing:-.01em;
  color:var(--neon);
  word-break:break-word;
}

.foot-links{margin:0}

.foot-links a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 16px;
  border:2px dashed var(--lemon);
  border-radius:999px;
  color:var(--lemon);
  font-weight:700;
  text-decoration:none;
  transition:background-color .18s ease,color .18s ease;
}

.foot-links a:hover{background:var(--lemon);color:var(--ink)}

.foot-copy{
  display:block;
  grid-column:1/-1;
  margin-top:10px;
  padding-top:14px;
  border-top:2px dotted rgba(255,206,92,.4);
  text-align:center;
  font-size:16px;
  color:var(--muted);
}

/* 动效 */
.rv{opacity:0;transform:translateY(18px)}

.rv.in{
  opacity:1;
  transform:none;
  transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.2,1);
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv{opacity:1;transform:none}
  .rv.in{transition:none}
  .nav-link:hover,.contact:hover,.rail a:hover{transform:none}
}

/* 布局断点 */
@media (min-width:720px){
  .hero{flex-direction:row;text-align:center}
  .hero-text{max-width:34em}
  footer{grid-template-columns:minmax(0,1fr) auto;align-items:end}
}

@media (min-width:960px){
  .shell{grid-template-columns:minmax(0,1fr) 284px;gap:44px}
  .rail{position:sticky;top:112px}
}

@media (max-width:899px){
  .nav-group{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:6px;
    width:100%;
  }
  .is-trigger::after{display:none}
  .nav-drop{
    position:static;
    display:flex;
    flex-direction:row;
    flex-wrap:wrap;
    gap:6px;
    min-width:0;
    padding:0;
    border:0;
    background:none;
    box-shadow:none;
  }
  .nav-drop .nav-link{border-color:rgba(135,255,113,.35)}
  .nav-group:hover .nav-drop,.nav-group:focus-within .nav-drop{display:flex}
}

@media (max-width:420px){
  body{font-size:16px}
  .brand-name{font-size:17px}
  .nav-link{padding:0 12px;font-size:15px}
}

button[aria-expanded]{min-width:44px;min-height:44px}