/* BEYOND THE SUN — final chapter of solar-system.html. Owner: beyond agent.
   Builds on solar-foundation.css tokens (--night, --lime, --line, --display, --mono, --body, --ease). */
.beyond{--bx-inset:max(var(--layout-gutter,clamp(20px,4vw,64px)),calc((100% - 1600px) / 2));--bx-gold:#f5cb79;--bx-ink:#ecf1f0;--bx-dim:#8f9cab;--bx-stage:#02040a;position:relative;padding-bottom:clamp(64px,7vw,120px);color:var(--bx-ink)}
.beyond::after{content:'';position:absolute;z-index:-1;inset:auto 0 0;height:60%;pointer-events:none;background:radial-gradient(ellipse 60% 70% at 78% 100%,#5b3f9a1c,transparent 70%),radial-gradient(ellipse 40% 50% at 10% 90%,#9a6a3a14,transparent 72%)}

/* ---------- intro ---------- */
.beyond-title{font-size:clamp(40px,5.3vw,88px);line-height:1.2;letter-spacing:-.05em}
.beyond-title-glow{background:linear-gradient(100deg,#fff7e2 0%,#f7d58e 34%,#ff9f62 66%,#c7b2ff 100%);-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
.beyond-intro p{max-width:30em}
.beyond-teasers{list-style:none;margin:34px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line)}
.beyond-teasers li{padding:18px 16px 0 0;min-width:0}
.beyond-teasers li+li{padding-left:16px;border-left:1px solid var(--line)}
.beyond-teasers b{display:block;font:700 clamp(24px,2.2vw,38px)/1 var(--display);letter-spacing:-.045em;color:#fff;font-variant-numeric:tabular-nums;white-space:nowrap}
.beyond-teasers b small{font:700 .42em var(--body);letter-spacing:0;margin-left:4px;color:var(--bx-gold)}
.beyond-teasers span{display:block;margin-top:10px;font-size:11px;line-height:1.7;color:#9eacb9;word-break:auto-phrase} /* Chrome: wrap at Japanese phrase boundaries (keeps 「理論上の上限」 whole) */
.beyond-est{display:inline-block;vertical-align:.12em;margin-left:6px;padding:1px 5px 0;border:1px solid #e6c79770;border-radius:2px;background:#e6c79712;color:#f3dcae;font:700 9px/1.5 var(--body);letter-spacing:.06em;font-style:normal;white-space:nowrap}

/* ---------- journey window ---------- */
.beyond-journey{--bx-h:clamp(600px,calc(100svh - 86px - 88px),1000px);--bx-row:max(var(--bx-h),var(--bx-cap,0px));position:relative;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(var(--bx-row),auto) auto;grid-template-areas:"stage" "rail";margin-top:clamp(44px,5vw,84px);background:var(--bx-stage);border-block:1px solid var(--line)}
.beyond-stage{grid-area:stage;position:relative;height:auto;min-height:var(--bx-row);overflow:hidden;outline:none;touch-action:pan-y;background:radial-gradient(ellipse 70% 80% at 62% 50%,#090e1d 0%,#050813 48%,var(--bx-stage) 100%)}
.beyond-stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.beyond-stage::after{content:'';position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(90deg,#02040ae6 0,#02040ab3 calc(var(--bx-inset) + min(440px,34vw)),#02040a00 calc(var(--bx-inset) + min(440px,34vw) + 220px)),linear-gradient(0deg,#02040acc 0,#02040a00 18%),linear-gradient(180deg,#02040ab3 0,#02040a00 16%)}
.beyond-stage:focus-visible{box-shadow:inset 0 0 0 2px var(--lime)}
.beyond-corner{position:absolute;z-index:2;width:14px;height:14px;pointer-events:none;border:0 solid #cfe6f566}
.beyond-corner:nth-of-type(1){top:14px;left:14px;border-width:1px 0 0 1px}
.beyond-corner:nth-of-type(2){top:14px;right:14px;border-width:1px 1px 0 0}
.beyond-corner:nth-of-type(3){bottom:14px;left:14px;border-width:0 0 1px 1px}
.beyond-corner:nth-of-type(4){bottom:14px;right:14px;border-width:0 1px 1px 0}
.beyond-hud{position:absolute;z-index:4;top:24px;left:var(--bx-inset);right:var(--bx-inset);pointer-events:none}
.beyond-hud b{white-space:nowrap}
.beyond-hud #beyond-hud-fov{color:#cfe6f5;font-variant-numeric:tabular-nums;white-space:nowrap}
.beyond-scale-tag{position:absolute;z-index:4;top:48px;right:var(--bx-inset);padding:5px 11px 4px;border:1px solid #ffffff1f;border-radius:20px;background:#070b1380;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);font:400 9px/1.4 var(--mono);letter-spacing:.1em;color:#d6e4ee;pointer-events:none;white-space:nowrap}
.beyond-keys{position:absolute;z-index:4;bottom:24px;left:calc(var(--bx-inset) + min(440px,34vw) + 28px);font:400 9px var(--mono);letter-spacing:.14em;color:#8a97a6;pointer-events:none}

/* ---------- caption (overlaid on the left of the stage) ---------- */
.beyond-caption{grid-area:stage;position:relative;z-index:3;align-self:center;justify-self:start;width:min(440px,34vw);margin-left:var(--bx-inset);padding-block:66px 52px;transition:opacity .22s var(--ease),transform .22s var(--ease)}
.beyond-caption-probe{position:absolute;top:0;left:0;visibility:hidden;pointer-events:none;transition:none}
.beyond-caption.is-leaving{opacity:0;transform:translateY(8px)}
.beyond-kicker{display:flex;align-items:center;gap:12px;font:400 10px var(--mono);letter-spacing:.14em;color:#e6c797;text-transform:uppercase}
.beyond-kicker b{font-weight:400;color:#f5cb79;font-size:11px} /* gold: journey steps are stars; lime numerals are reserved for page chapters */
.beyond-caption h3{margin:14px 0 0;font:700 clamp(28px,2.55vw,44px)/1.34 var(--body);letter-spacing:-.045em;color:#fff;text-shadow:0 3px 40px #02040bee;text-wrap:balance}
.beyond-lead{margin:16px 0 0;font-size:13.5px;line-height:2;color:#bcc7d1}
.beyond-figs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:22px 0 0;padding:0;border-top:1px solid var(--line)}
.beyond-figs>div{padding:14px 12px 0 0;min-width:0}
.beyond-figs>div+div{padding-left:14px;border-left:1px solid var(--line)}
.beyond-figs dt{font-size:10px;line-height:1.5;color:var(--bx-dim);letter-spacing:.02em}
.beyond-figs dd{margin:6px 0 0}
.beyond-figs b{font:700 clamp(21px,1.9vw,31px)/1.05 var(--display);letter-spacing:-.04em;color:#fff;font-variant-numeric:tabular-nums;word-break:keep-all;overflow-wrap:anywhere}
.beyond-figs small{margin-left:4px;font:400 10px var(--mono);color:var(--bx-gold);white-space:nowrap}
.beyond-figs dd>span{display:block;margin-top:5px;font-size:10px;line-height:1.5;color:var(--bx-dim)}
.beyond-figs .is-long b{font-size:clamp(17px,1.45vw,23px);letter-spacing:-.03em}
.beyond-figs .beyond-est{margin-left:0;margin-top:6px;display:table}
.beyond-detail{margin:16px 0 0;font-size:12.5px;line-height:1.95;color:#aebbc7}
.beyond-note{margin:14px 0 0;font-size:11px;line-height:1.85;color:var(--bx-dim)}
.beyond-note .beyond-est{margin:0 6px 0 0}
.beyond-pick{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.beyond-pick button{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:8px 14px;border:1px solid #ffffff2e;border-radius:30px;background:#070b1366;color:#d3dce2;font:700 12px var(--body);cursor:pointer;transition:background .25s,border-color .25s,color .25s}
.beyond-pick button i{width:9px;height:9px;border-radius:50%;background:var(--star);box-shadow:0 0 10px var(--star);flex:none}
.beyond-pick button small{font:400 10px var(--mono);color:#8f9cab}
.beyond-pick button:hover{border-color:#f5cb7980;background:#f5cb790f}
.beyond-pick button[aria-pressed=true]{border-color:#f5cb79b3;background:#f5cb791a;color:#fff}
.beyond-pick button[aria-pressed=true] small{color:#f3dcae}
.beyond-view{display:inline-flex;margin-top:18px;padding:3px;border:1px solid #bca5ff40;border-radius:30px;background:#0a0c1a99}
.beyond-view button{display:inline-flex;align-items:center;gap:8px;min-height:36px;padding:6px 14px;border:0;border-radius:30px;background:none;color:#b9b2d8;font:700 12px var(--body);cursor:pointer;transition:background .25s,color .25s}
.beyond-view button i{width:8px;height:8px;border-radius:50%;border:1px solid currentColor;flex:none}
.beyond-view button small{font:400 9px var(--mono);letter-spacing:.1em;color:#9d93c4}
.beyond-view button:hover{color:#fff}
.beyond-view button[aria-pressed=true]{background:#bca5ff26;color:#fff}
.beyond-view button[aria-pressed=true] i{background:#ffb36b;border-color:#ffb36b;box-shadow:0 0 8px #ff9a4c}
.beyond-view button[aria-pressed=true] small{color:#e4dcff}
.beyond-sub{display:flex;gap:6px;margin-top:16px}
.beyond-sub button{display:inline-flex;align-items:center;gap:8px;min-height:34px;padding:6px 12px;border:1px solid #ffffff24;border-radius:2px;background:none;color:#aeb8c3;font:700 11px var(--body);cursor:pointer;transition:background .25s,border-color .25s,color .25s}
.beyond-sub button small{font:400 9px var(--mono);color:#8a97a6}
.beyond-sub button[aria-pressed=true]{border-color:#d9f56c80;background:#d9f56c14;color:#f4ffd0}
.beyond-sub button[aria-pressed=true] small{color:var(--lime)}
.beyond-energy{list-style:none;margin:18px 0 0;padding:0;border-bottom:1px solid var(--line)}
.beyond-energy button{position:relative;display:grid;grid-template-columns:92px minmax(0,1fr);grid-template-rows:auto 0fr;align-items:baseline;column-gap:12px;width:100%;padding:11px 0 11px 14px;border:0;border-top:1px solid var(--line);background:none;color:inherit;text-align:left;cursor:pointer;transition:grid-template-rows .45s var(--ease),background .3s}
.beyond-energy button::before{content:'';position:absolute;left:0;top:10px;bottom:10px;width:2px;background:#ffffff1f;transition:background .3s}
.beyond-energy button:hover{background:#ffffff06}
.beyond-energy-when{font-size:11px;font-weight:700;color:#aeb8c3;white-space:nowrap}
.beyond-energy-big{white-space:nowrap}
.beyond-energy-big b{font:700 18px/1.1 var(--display);letter-spacing:-.03em;color:#dfe6ea;font-variant-numeric:tabular-nums;transition:font-size .35s var(--ease),color .3s}
.beyond-energy-big small{margin-left:4px;font:400 10px var(--mono);color:#b8a88a}
.beyond-energy-big sup{font-size:.55em}
.beyond-energy-text{grid-column:1/-1;align-self:stretch;overflow:hidden;min-height:0;font-size:12px;line-height:1.9;color:#aebbc7}
.beyond-energy button[aria-pressed=true]{grid-template-rows:auto 1fr}
.beyond-energy button[aria-pressed=true]::before{background:linear-gradient(180deg,#ffd27a,#ff8a4c 60%,#bca5ff)}
.beyond-energy button[aria-pressed=true] .beyond-energy-when{color:#ffd9a0}
.beyond-energy button[aria-pressed=true] .beyond-energy-big b{font-size:clamp(24px,2.1vw,34px);color:#fff}
.beyond-energy button[aria-pressed=true] .beyond-energy-big small{color:var(--bx-gold)}
.beyond-energy button[aria-pressed=true] .beyond-energy-text{padding-top:6px;min-height:calc(3 * 1.9em + 6px)}
.beyond-teaser{margin-top:18px;padding:14px 16px;border:1px solid #bca5ff45;border-radius:4px;background:linear-gradient(135deg,#bca5ff17,#bca5ff03 70%)}
.beyond-teaser{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:14px;align-items:start}
.beyond-teaser>*{grid-column:1}
.beyond-teaser figure{grid-column:2;grid-row:1/span 3;margin:0;width:148px}
.beyond-teaser figure img{display:block;width:148px;height:86px;object-fit:cover;border-radius:3px;background:#000}
.beyond-teaser figcaption{margin-top:6px;font:400 9px/1.5 var(--mono);letter-spacing:.02em;color:#c3b8ee}
.beyond-teaser span{display:block;font:400 9px var(--mono);letter-spacing:.16em;color:var(--violet,#bca5ff)}
.beyond-teaser b{display:block;margin-top:6px;font-size:15px;letter-spacing:-.02em}
.beyond-teaser p{margin:6px 0 0;font-size:12px;line-height:1.85;color:#c9c2e6}

/* ---------- step rail ---------- */
.beyond-rail{grid-area:rail;position:relative;display:grid;grid-template-columns:auto minmax(0,1fr) auto;padding-inline:var(--bx-inset);background:#050811;border-top:1px solid var(--line)}
.beyond-progress{position:absolute;left:0;right:0;top:-1px;height:2px;pointer-events:none}
.beyond-progress span{display:block;height:100%;background:var(--lime);box-shadow:0 0 14px #d9f56c80;transform-origin:left;transform:scaleX(.1);transition:transform .9s var(--ease)}
.beyond-rail ol{position:relative;list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(8,minmax(0,1fr));min-width:0}
.beyond-rail li{min-width:0}
.beyond-rail li button{position:relative;display:grid;align-content:center;gap:2px;width:100%;height:100%;min-height:86px;padding:14px 14px 14px 16px;border:0;border-left:1px solid var(--line);background:none;color:#8b97a6;text-align:left;cursor:pointer;transition:background .3s,color .3s}
.beyond-rail li button::before{content:'';position:absolute;left:0;right:0;top:0;height:2px;background:transparent;transition:background .3s}
.beyond-rail li button:hover{background:#ffffff07}
.beyond-rail li button small{font:400 10px var(--mono);color:#75808e}
.beyond-rail li button b{font-size:13px;line-height:1.5;color:#dfe6ea;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.beyond-rail li button>span{font:400 9px var(--mono);letter-spacing:.12em;color:#7b8797;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.beyond-rail li button.is-past small{color:#d9f56c99}
.beyond-rail li button[aria-current=step]{background:linear-gradient(180deg,#d9f56c14,#d9f56c00 80%);color:#fff}
.beyond-rail li button[aria-current=step]::before{background:var(--lime)}
.beyond-rail li button[aria-current=step] small{color:var(--lime)}
.beyond-rail li button[aria-current=step] b{color:#fff}
.beyond-pips{display:flex;gap:4px;margin-top:4px}
.beyond-pips i{width:14px;height:2px;background:#ffffff2e}
.beyond-pips i.is-on{background:var(--lime)}
.beyond-nav{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-width:78px;border:0;border-left:1px solid var(--line);background:none;color:var(--bx-ink);font:400 22px/1 var(--display);cursor:pointer;transition:background .3s,color .3s}
.beyond-nav:hover:not(:disabled){background:#ffffff0a}
.beyond-nav:disabled{color:#ffffff3a;cursor:default}
.beyond-nav-next{min-width:128px;border-left:0;background:var(--lime);color:#111b0b;transition:background .3s,box-shadow .3s}
.beyond-nav-next small{font:700 11px var(--mono);letter-spacing:.14em}
.beyond-nav-next:hover:not(:disabled){background:#e6ff86;box-shadow:0 0 30px #d9f56c33}
.beyond-nav-next>span{transition:transform .3s var(--ease)}
.beyond-nav-next:hover>span{transform:translateX(3px)}
.beyond-nav-next.is-restart>span{font-size:0}
.beyond-nav-next.is-restart>span::before{content:'↺';font-size:22px}
.beyond-nav-next.is-restart small{font-size:0}
.beyond-nav-next.is-restart small::before{content:'AGAIN';font-size:11px}
.beyond :focus-visible{outline:2px solid var(--lime);outline-offset:3px}
.beyond-rail :focus-visible{outline-offset:-3px}
.beyond-sr{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- table & sources ---------- */
.beyond-foot{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;margin-top:clamp(28px,3vw,44px)}
.beyond-foot>details{min-width:0}
.beyond-foot details{border:1px solid var(--line);border-radius:4px;background:#070b1399}
.beyond-foot summary{display:flex;align-items:center;gap:18px;min-height:58px;padding:16px 22px;cursor:pointer;list-style:none}
.beyond-foot summary::-webkit-details-marker{display:none}
.beyond-foot summary>span{font-size:14px;font-weight:700}
.beyond-foot summary>small{font:400 9px var(--mono);letter-spacing:.12em;color:#8b97a6;text-transform:uppercase}
.beyond-foot summary>i{margin-left:auto;font-style:normal;font-size:16px;color:var(--lime);transition:transform .3s var(--ease)}
.beyond-foot details[open] summary>i{transform:rotate(45deg)}
.beyond-foot summary:hover>span{color:#fff}
.beyond-table-scroll{max-width:100%;overflow-x:auto;padding:0 22px 6px;-webkit-overflow-scrolling:touch}
.beyond-table table{width:100%;min-width:760px;border-collapse:collapse;font-size:12.5px;line-height:1.6}
.beyond-table caption{text-align:left;padding:0 0 10px;font-size:11px;color:var(--bx-dim)}
.beyond-table th,.beyond-table td{padding:11px 14px 11px 0;border-top:1px solid #ffffff14;text-align:left;vertical-align:top;font-weight:400}
.beyond-table thead th{font:400 10px var(--mono);letter-spacing:.08em;color:#9aa6b3;border-top:0}
.beyond-table thead th small{display:block;font-size:9px;color:#75808e}
.beyond-table tbody th{font-weight:700;color:#e8edf0;white-space:nowrap}
.beyond-table tbody th small{display:block;font:400 9px var(--mono);letter-spacing:.04em;color:#8a97a6;white-space:normal}
.beyond-table td:nth-child(2),.beyond-table td:nth-child(3),.beyond-table td:nth-child(4){font:600 14px var(--display);font-variant-numeric:tabular-nums;color:#fff;white-space:nowrap}
.beyond-table td:nth-child(4) small{margin-left:4px;font:400 9px var(--body);color:var(--bx-dim)}
.beyond-table td:last-child{color:#aebbc7;font-size:12px;min-width:220px}
.beyond-table tr.is-sun th,.beyond-table tr.is-sun td:nth-child(2){color:var(--bx-gold)}
.beyond-table-note{margin:0;padding:12px 22px 20px;font-size:11px;line-height:1.85;color:var(--bx-dim)}
.beyond-table-note .beyond-est{margin:0 6px 0 0}
.beyond-sources-body{padding:0 22px 22px}
.beyond-caveats{margin-top:0}
.beyond-links{list-style:none;margin:18px 0 0;padding:14px 0 0;border-top:1px solid #ffffff14;display:grid;gap:8px;font-size:11px;line-height:1.7}
.beyond-links b{display:inline-block;min-width:150px;margin-right:10px;color:#cbd4d6}
.beyond-links a{display:inline-block;margin-right:14px;color:#9fc7e0;text-decoration:underline;text-underline-offset:3px;text-decoration-color:#8ed8ff55}
.beyond-links a:hover{color:#fff}
.beyond--nocanvas .beyond-stage canvas,.beyond--nocanvas .beyond-hud,.beyond--nocanvas .beyond-scale-tag,.beyond--nocanvas .beyond-keys,.beyond--nocanvas .beyond-corner{display:none}
.beyond--nocanvas .beyond-journey{grid-template-rows:auto auto}
.beyond--nocanvas .beyond-stage{height:auto;min-height:0}
.beyond--nocanvas .beyond-caption{position:static}

/* ---------- motion off: instant ---------- */
html[data-motion=off] .beyond-caption.is-leaving{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (min-width:1900px){.beyond-caption{width:min(500px,30vw)}.beyond-stage::after{background:linear-gradient(90deg,#02040ae6 0,#02040ab3 calc(var(--bx-inset) + min(500px,30vw)),#02040a00 calc(var(--bx-inset) + min(500px,30vw) + 240px)),linear-gradient(0deg,#02040acc 0,#02040a00 18%),linear-gradient(180deg,#02040ab3 0,#02040a00 16%)}.beyond-keys{left:calc(var(--bx-inset) + min(500px,30vw) + 28px)}.beyond-lead{font-size:14.5px}.beyond-rail li button b{font-size:14px}}
@media (max-width:1150px){.beyond-caption{width:min(400px,38vw)}.beyond-stage::after{background:linear-gradient(90deg,#02040ae6 0,#02040ab3 calc(var(--bx-inset) + min(400px,38vw)),#02040a00 calc(var(--bx-inset) + min(400px,38vw) + 180px)),linear-gradient(0deg,#02040acc 0,#02040a00 18%),linear-gradient(180deg,#02040ab3 0,#02040a00 16%)}.beyond-keys{display:none}.beyond-rail li button{padding-inline:10px 8px}.beyond-rail li button b{font-size:12px}.beyond-nav{min-width:60px}.beyond-nav-next{min-width:96px}.beyond-teasers{grid-template-columns:repeat(2,minmax(0,1fr))}.beyond-teasers li:nth-child(3){padding-left:0;border-left:0}.beyond-teasers li:nth-child(n+3){margin-top:14px;border-top:1px solid var(--line)}}
@media (max-width:900px){
  .beyond-journey{--bx-row:clamp(420px,min(125vw,78svh),1000px);grid-template-rows:auto auto auto;grid-template-areas:"stage" "rail" "caption"}
  .beyond-stage{width:100%;height:var(--bx-row);min-height:0}
  .beyond-stage::after{background:linear-gradient(0deg,#02040ab3 0,#02040a00 16%),linear-gradient(180deg,#02040ab3 0,#02040a00 14%)}
  .beyond-caption{grid-area:caption;width:auto;max-height:none;overflow:visible;justify-self:stretch;align-self:start;margin:0;padding:28px var(--layout-gutter,20px) 36px}
  .beyond-caption h3{font-size:clamp(26px,6.6vw,34px)}
  .beyond-hud{top:16px;left:16px;right:16px;font-size:9px}
  .beyond-scale-tag{top:auto;bottom:14px;left:16px;right:auto;font-size:9px;letter-spacing:.06em;padding:4px 9px 3px;max-width:calc(100% - 132px);overflow:hidden;text-overflow:ellipsis}
  .beyond-corner{display:none}
  .beyond-rail{grid-template-columns:auto minmax(0,1fr) auto;padding-inline:0}
  .beyond-rail ol{display:flex;overflow-x:auto;scroll-snap-type:x proximity;scroll-padding-inline:33%;scrollbar-width:none;-webkit-overflow-scrolling:touch;-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 26px,#000 calc(100% - 26px),transparent);mask-image:linear-gradient(90deg,transparent 0,#000 26px,#000 calc(100% - 26px),transparent)}
  .beyond-rail ol::-webkit-scrollbar{display:none}
  .beyond-rail li{flex:0 0 calc(100% / 3);scroll-snap-align:center}
  .beyond-rail li button{min-width:0;min-height:70px;padding:10px 12px}
  .beyond-rail li button>span{display:none}
  .beyond-nav{min-width:52px;font-size:20px}
  .beyond-nav-next{min-width:64px}
  .beyond-nav-next small{display:none}
  .beyond-nav-next.is-restart small{display:none}
}
@media (min-width:601px) and (max-width:900px){.beyond-rail li{flex-basis:calc(100% / 5)}}
@media (max-width:800px){.beyond-caption [data-scene],.beyond-caption [data-view]{min-height:44px;padding-inline:14px}} /* touch targets ≥44px */
@media (max-width:620px){
  .beyond-title{font-size:clamp(38px,11vw,54px)}
  .beyond-teasers b{font-size:26px}
  .beyond-figs b{font-size:21px}
  .beyond-figs>div{padding-right:8px}
  .beyond-figs>div+div{padding-left:10px}
  .beyond-lead{font-size:13px}
  .beyond-energy button{grid-template-columns:78px minmax(0,1fr)}
  .beyond-foot summary{flex-wrap:wrap;gap:4px 14px;padding:14px 16px}
  .beyond-foot summary>small{order:3;flex-basis:100%}
  .beyond-foot summary>i{order:2}
  .beyond-table-scroll{padding-inline:16px}
  .beyond-table-note,.beyond-sources-body{padding-inline:16px}
  .beyond-links b{display:block;margin-bottom:2px}
}
@media (max-width:420px){.beyond-hud #beyond-hud-fov{display:none}.beyond-figs .is-long b{font-size:clamp(14px,4.2vw,17px)}} /* keeps 「約6,000万 km」 on one line */
@media (max-width:380px){.beyond-figs b{font-size:19px}.beyond-figs small{margin-left:3px}} /* 「430万 太陽質量」 on one line at 360 */
@media (max-height:820px) and (min-width:901px){
  .beyond-caption{padding-block:54px 42px}
  .beyond-caption h3{margin-top:10px;font-size:clamp(25px,2.2vw,36px)}
  .beyond-lead{margin-top:12px;font-size:13px;line-height:1.85}
  .beyond-figs{margin-top:16px}
  .beyond-figs>div{padding-top:10px}
  .beyond-pick{margin-top:14px}
  .beyond-pick button{min-height:36px;padding-block:6px}
  .beyond-detail{margin-top:12px;font-size:12px;line-height:1.8}
  .beyond-note{margin-top:10px;line-height:1.75}
  .beyond-energy{margin-top:12px}
  .beyond-energy button{padding-block:8px}
  .beyond-view{margin-top:14px}
}