:root{
  --ink:#172620;
  --ink-soft:#2c453c;
  --mint:#b4fde1;
  --blue:#add8e6;
  --paper:#f7fffb;
  --edge:3px solid #172620;
  --clay:inset -4px -4px 10px rgba(255,255,255,.75), inset 4px 4px 10px rgba(23,38,32,.10), 6px 8px 0 rgba(23,38,32,.85);
  --clay-sm:inset -3px -3px 8px rgba(255,255,255,.7), inset 3px 3px 8px rgba(23,38,32,.08), 4px 5px 0 rgba(23,38,32,.7);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Noto Sans Hebrew',-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:linear-gradient(165deg,#e8fff6 0%,#e4f4fb 55%,#f4fffb 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink)}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* 左侧胶囊导航 */
.rail{
  position:sticky;top:0;z-index:50;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:10px 14px;
  border-bottom:var(--edge);
  background:linear-gradient(120deg,var(--mint),var(--blue));
}
.rail .brand{
  order:1;display:inline-flex;align-items:center;gap:10px;
  min-height:44px;padding:2px 0;
  font-size:17px;font-weight:700;text-decoration:none;
}
.rail .brand img,.mark{
  width:40px;height:40px;border-radius:50%;border:var(--edge);
  background:#fff;object-fit:cover;flex:0 0 auto;
}
.mark{display:grid;place-items:center;font-size:18px;font-weight:700}
.cta{
  order:2;margin-left:auto;
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:8px 18px;
  border-radius:999px;border:var(--edge);
  background:var(--ink);color:var(--mint);
  font-size:16px;font-weight:700;text-decoration:none;
  box-shadow:var(--clay-sm);
  transition:transform .2s ease-out,background .2s ease-out;
}
.cta:hover,.cta:focus-visible{transform:translateY(-3px);background:#213830}
.menu-box{order:3;flex:1 0 100%}
summary{
  display:inline-flex;align-items:center;gap:8px;
  min-height:42px;padding:6px 18px;
  border-radius:999px;border:var(--edge);
  background:#fff;font-weight:700;font-size:16px;
  cursor:pointer;list-style:none;box-shadow:var(--clay-sm);
}
summary::-webkit-details-marker{display:none}
summary::after{content:"＋";font-weight:700;line-height:1}
.menu-box[open] summary::after{content:"－"}
.pill-menu{
  list-style:none;margin:10px 0 2px;padding:0;
  display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
}
.pill-menu a{
  display:flex;align-items:center;justify-content:center;
  min-height:44px;padding:8px 14px;
  border-radius:999px;border:var(--edge);
  background:#fff;color:var(--ink);
  font-size:16px;font-weight:500;text-decoration:none;
  box-shadow:var(--clay-sm);
  transition:transform .2s cubic-bezier(.34,1.56,.64,1),background .2s ease-out;
}
.pill-menu a:hover,.pill-menu a:focus-visible{background:var(--blue);transform:translateY(-3px)}

/* 版面 */
.stage{display:block;padding:18px 14px 0}
.stage>main{min-width:0;max-width:80ch;margin:0 auto}
.stage>main>div{scroll-margin-top:96px}

/* 主视觉 */
.hero{
  position:relative;
  display:grid;gap:16px;justify-items:center;align-content:center;
  min-height:45vh;
  padding:34px 20px 30px;
  text-align:center;
  border:var(--edge);
  border-bottom:8px solid var(--ink);
  background:linear-gradient(150deg,var(--mint),var(--blue));
  box-shadow:inset -8px -8px 18px rgba(255,255,255,.8),inset 8px 8px 18px rgba(23,38,32,.14),8px 10px 0 rgba(23,38,32,.9);
}
.hero-copy{grid-column:1}
.hero h1{
  margin:0 0 12px;
  font-size:clamp(26px,6.4vw,46px);
  line-height:1.24;
  letter-spacing:-.01em;
}
.hero .subtitle{max-width:52ch;margin:0 auto;color:var(--ink-soft)}
.hero-art{position:relative;margin:0;width:118px;height:106px;justify-self:center}
.hero-art .b{position:absolute;display:block;border:var(--edge)}
.b1{width:62px;height:62px;top:6px;left:10px;border-radius:50% 50% 46% 54%;background:#fff;box-shadow:var(--clay-sm);animation:bob 6s ease-in-out infinite}
.b2{width:42px;height:42px;right:6px;bottom:0;border-radius:46% 54% 50% 50%;background:var(--blue);animation:bob 7s ease-in-out infinite reverse}
.b3{width:24px;height:24px;left:0;bottom:12px;border-radius:50%;background:var(--paper);animation:bob 5s ease-in-out infinite}
.hero-img{width:100%;border:var(--edge);border-radius:18px;box-shadow:var(--clay-sm)}
.badge{
  position:absolute;top:14px;right:14px;
  padding:6px 14px;border:var(--edge);border-radius:999px;
  background:#fff;font-size:16px;font-weight:700;
  transform:rotate(5deg);
  box-shadow:4px 4px 0 rgba(23,38,32,.85);
  animation:bob 5.5s ease-in-out infinite;
}
@keyframes bob{0%,100%{translate:0 0}50%{translate:0 -6px}}

/* 正文分节 */
.stage>main>div:not(.hero){
  margin:0 0 26px;
  padding:clamp(18px,3.4vw,34px);
  border:var(--edge);
  border-bottom:8px solid var(--mint);
  background:#fff;
  box-shadow:inset -5px -5px 14px rgba(255,255,255,.85),inset 5px 5px 14px rgba(23,38,32,.07),7px 9px 0 rgba(23,38,32,.85);
}
.stage>main>div:not(.hero):nth-of-type(even){border-bottom-color:var(--blue)}
.stage>main>div:not(.hero):last-of-type{margin-bottom:0}

.subtitle{font-size:17px;line-height:1.7;color:var(--ink-soft);margin:0 0 16px}
h2{font-size:clamp(21px,3.2vw,29px);line-height:1.35;margin:0 0 10px;letter-spacing:-.005em}
h3{font-size:clamp(18px,2.4vw,22px);line-height:1.4;margin:24px 0 8px}
p{margin:0 0 14px}
p:last-child,ul:last-child,ol:last-child,figure:last-child{margin-bottom:0}
ul,ol{padding-left:1.35em;margin:0 0 14px}
li{margin:0 0 7px}
strong{font-weight:700}
a{text-decoration-thickness:2px;text-underline-offset:3px}
blockquote{
  margin:16px 0;padding:12px 18px;
  border-left:8px solid var(--mint);background:var(--paper);
  font-size:16px;
}
blockquote p:last-child{margin:0}
figure{margin:16px 0}
figure img, .stage>main>div:not(.hero) img{border:var(--edge);border-radius:18px;box-shadow:var(--clay-sm)}
figcaption{font-size:16px;color:var(--ink-soft);margin-top:8px}
table{width:100%;border-collapse:collapse;font-size:16px;margin:16px 0}
th,td{border:2px solid var(--ink);padding:8px 10px;text-align:left;vertical-align:top;word-break:break-word}
th{background:var(--mint)}
code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px;background:var(--paper);padding:1px 6px;border-radius:6px}
hr{border:0;border-top:3px dashed rgba(23,38,32,.35);margin:22px 0}

/* 右侧小栏 */
.side{
  margin:26px 0 0;padding:18px;
  border:var(--edge);border-bottom:8px solid var(--blue);
  background:#fff;
  box-shadow:inset -5px -5px 14px rgba(255,255,255,.85),7px 9px 0 rgba(23,38,32,.85);
}
.side h2{margin:0 0 4px;font-size:21px}
.side .subtitle{margin:0 0 14px}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.side-list a{
  display:flex;align-items:center;min-height:44px;padding:8px 12px;
  border:3px solid var(--ink);background:var(--paper);
  font-size:16px;font-weight:500;text-decoration:none;
  transition:background .2s ease-out,transform .2s ease-out;
}
.side-list a:hover,.side-list a:focus-visible{background:var(--mint);transform:translateX(3px)}

/* 页脚 */
.foot{
  margin:30px 0 0;padding:22px 16px 26px;
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;
  background:var(--ink);color:var(--mint);
  border-top:8px solid var(--mint);
}
.foot-brand{display:flex;flex-wrap:wrap;align-items:center;gap:12px;flex:1 1 240px}
.foot-brand img,.foot-brand .mark{width:44px;height:44px;border-color:var(--mint);background:#0f1c17;color:var(--mint)}
.foot-brand strong{font-size:17px}
.foot-form{display:flex;gap:8px;flex:1 1 100%;max-width:340px}
.foot-form input{
  flex:1;min-width:0;min-height:44px;padding:8px 16px;
  border-radius:999px;border:3px solid var(--mint);
  background:#0f1c17;color:#fff;font:inherit;font-size:16px;
}
.foot-form input::placeholder{color:#9fd6c4}
.foot-form button{
  min-height:44px;padding:8px 20px;
  border-radius:999px;border:3px solid var(--mint);
  background:var(--mint);color:var(--ink);
  font:inherit;font-size:16px;font-weight:700;cursor:pointer;
  transition:transform .2s ease-out;
}
.foot-form button:hover{transform:translateY(-2px)}
.foot-nav{display:flex;flex-wrap:wrap;gap:2px 4px;flex:1 1 200px}
.foot-nav a{
  display:inline-flex;align-items:center;min-height:44px;padding:4px 12px;
  color:var(--mint);font-size:16px;text-decoration:none;
  border-bottom:2px solid transparent;
}
.foot-nav a:hover,.foot-nav a:focus-visible{border-bottom-color:var(--mint)}
.foot-copy{flex:1 1 100%;font-size:16px;padding-top:12px;border-top:2px dashed rgba(180,253,225,.35)}

/* 中屏 */
@media (min-width:700px){
  .hero{grid-template-columns:minmax(0,1fr) 150px;justify-items:center;align-items:center;padding:38px 34px}
  .hero-copy{grid-column:1}
  .hero-art{grid-column:2}
  .stage{padding:24px 22px 0}
}

/* 宽屏：左侧固定竖排 */
@media (min-width:900px){
  body{padding-left:272px}
  .rail{
    position:fixed;inset:0 auto 0 0;width:272px;
    flex-direction:column;flex-wrap:nowrap;align-items:stretch;
    gap:14px;padding:24px 20px;
    border-bottom:0;border-right:var(--edge);
    background:linear-gradient(170deg,var(--mint),var(--blue));
    overflow-y:auto;
  }
  .rail .brand{order:0;font-size:19px;padding:2px 0 12px;border-bottom:3px dashed rgba(23,38,32,.35)}
  .menu-box{order:1;flex:0 0 auto}
  summary{margin-bottom:10px}
  .pill-menu{grid-template-columns:1fr}
  .cta{order:2;margin:auto 0 0;padding:12px 18px}
  .stage{grid-template-columns:minmax(0,1fr) 292px;display:grid;gap:28px;align-items:start;padding:28px 32px 0}
  .stage>main{max-width:76ch;margin:0}
  .side{margin:0;position:sticky;top:24px}
  .foot{margin-left:0;padding:24px 32px}
  .foot-copy{flex:0 0 auto;margin-left:auto;padding-top:0;border-top:0}
}
@media (min-width:1180px){
  .stage{padding:32px 44px 0}
  .foot{padding:26px 44px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}

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