/* Altsok · 台北夜 */
:root {
  --nt: #10123a;
  --nt-deep: #0a0c2b;
  --nt-up: #171b4d;
  --glass: rgba(236, 240, 255, .055);
  --glass-hi: rgba(236, 240, 255, .085);
  --hair: rgba(168, 182, 255, .17);
  --hair-hi: rgba(168, 182, 255, .3);
  --neon: #3ee6e0;
  --neon-soft: rgba(62, 230, 224, .38);
  --neon-faint: rgba(62, 230, 224, .1);
  --ink: #eef0ff;
  --ink-2: #ccd1f0;
  --ink-3: #a3aad6;
  --rose: #ff86b0;
  --amber: #f4c47e;
  --paper: #f3f5fc;
  --col: 40em;
  --wide: 56rem;
  --gut: clamp(1rem, 4.2vw, 2.5rem);
  --r-lg: 1.375rem;
  --r-md: .875rem;
  --r-pill: 999px;
  --caps-h: 3.5rem;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

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

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; background: var(--nt); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(60rem 40rem at 92% -6%, rgba(62, 230, 224, .07), transparent 62%),
    radial-gradient(52rem 46rem at -12% 38%, rgba(116, 92, 255, .09), transparent 64%),
    radial-gradient(46rem 36rem at 108% 88%, rgba(255, 104, 170, .045), transparent 60%),
    var(--nt);
  background-attachment: fixed;
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.85;
  letter-spacing: .015em;
  font-feature-settings: "palt" 0;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: #8ff4ef; text-decoration: underline; text-decoration-color: rgba(62, 230, 224, .45); text-underline-offset: .22em; text-decoration-thickness: 1px; }
a:hover { color: #c7fffb; text-decoration-color: var(--neon); }
:focus-visible { outline: 2px solid var(--neon); outline-offset: 3px; border-radius: 6px; }

.ao-body { display: flex; flex-direction: column; }
.ao-body > main { flex: 1 0 auto; width: 100%; }
.ao-skip { position: absolute; left: -999px; top: .5rem; z-index: 60; padding: .5rem 1rem; background: var(--neon); color: var(--nt); border-radius: var(--r-pill); font-weight: 700; text-decoration: none; }
.ao-skip:focus { left: 1rem; }

/* ───────── 頁首 ───────── */
.ao-top { position: relative; z-index: 30; border-bottom: 1px solid var(--hair); background: rgba(10, 12, 43, .72); }
.ao-top__in { max-width: 76rem; margin: 0 auto; padding: .7rem var(--gut); display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.ao-mark { display: inline-flex; align-items: center; gap: .6rem; color: var(--ink); text-decoration: none; }
.ao-mark:hover { color: var(--ink); }
.ao-mark__g { color: var(--neon); flex: none; }
.ao-mark__t { font-weight: 900; font-size: 1.22rem; letter-spacing: .06em; }
.ao-mark--sm .ao-mark__t { font-size: 1.05rem; }
.ao-nav { display: flex; gap: .3rem; }
.ao-nav a { color: var(--ink-2); text-decoration: none; font-size: .95rem; padding: .32rem .85rem; border-radius: var(--r-pill); border: 1px solid transparent; transition: border-color .2s, color .2s; }
.ao-nav a:hover { color: var(--ink); border-color: var(--hair-hi); }
.ao-nav a[aria-current="page"] { color: var(--ink); border-color: var(--hair-hi); background: var(--glass); }

/* ───────── 章節膠囊(吸頂) ───────── */
.ao-caps {
  position: sticky; top: 0; z-index: 40;
  background: rgba(13, 15, 50, .78);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--hair);
}
.ao-caps__in { max-width: 76rem; margin: 0 auto; display: flex; align-items: center; gap: .6rem; padding: 0 0 0 var(--gut); min-height: var(--caps-h); }
.ao-caps__tag { flex: none; font-size: .78rem; font-weight: 700; letter-spacing: .2em; color: var(--neon); padding-right: .7rem; border-right: 1px solid var(--hair); line-height: 1.4; }
.ao-caps__row {
  list-style: none; margin: 0; padding: .55rem var(--gut) .55rem .1rem;
  display: flex; gap: .5rem; overflow-x: auto; overscroll-behavior-x: contain;
  scrollbar-width: none; -webkit-overflow-scrolling: touch; flex: 1; min-width: 0;
  counter-reset: aocap;
  -webkit-mask-image: linear-gradient(90deg, #000 0, #000 calc(100% - 2.5rem), transparent);
  mask-image: linear-gradient(90deg, #000 0, #000 calc(100% - 2.5rem), transparent);
}
.ao-caps__row::-webkit-scrollbar { display: none; }
.ao-cap { flex: none; counter-increment: aocap; }
.ao-cap a {
  display: inline-flex; align-items: center; gap: .5rem;
  max-width: 17em; padding: .34rem .95rem .34rem .45rem;
  border-radius: var(--r-pill); border: 1px solid var(--hair);
  background: var(--glass); color: var(--ink-2); text-decoration: none;
  font-size: .875rem; line-height: 1.5; white-space: nowrap;
  transition: border-color .25s, color .25s, background-color .25s, box-shadow .25s;
}
.ao-cap a::before {
  content: counter(aocap, decimal-leading-zero);
  flex: none; font: 600 .7rem/1 var(--mono); letter-spacing: .04em;
  color: var(--ink-3); padding: .32rem .42rem; border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .06);
}
.ao-cap__t { overflow: hidden; text-overflow: ellipsis; }
.ao-cap a:hover { color: var(--ink); border-color: var(--hair-hi); }
.ao-cap a.is-on {
  color: #dafffd; border-color: var(--neon);
  background: rgba(62, 230, 224, .08);
  box-shadow: 0 0 0 1px rgba(62, 230, 224, .12), 0 0 14px -4px rgba(62, 230, 224, .55);
}
.ao-cap a.is-on::before { color: var(--nt); background: var(--neon); }
.ao-caps__bar { position: absolute; left: 0; bottom: -1px; height: 1px; width: 100%; transform-origin: 0 50%; transform: scaleX(var(--ao-p, 0)); background: linear-gradient(90deg, rgba(62, 230, 224, .2), var(--neon)); }

/* ───────── 主視覺 ───────── */
.ao-sky { position: relative; height: clamp(15rem, 56vh, 37rem); overflow: hidden; background: var(--nt-deep); }
.ao-sky__img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 58%; }
.ao-sky::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(16, 18, 58, .05) 0%, rgba(16, 18, 58, .15) 45%, rgba(16, 18, 58, .88) 86%, var(--nt) 100%); pointer-events: none; }

/* ───────── 閱讀區 ───────── */
.ao-read { padding: 0 var(--gut) 5rem; }
.ao-doc { max-width: var(--wide); margin: 0 auto; }
.ao-doc > section,
.ao-doc > aside,
.ao-doc > div { max-width: var(--col); margin-left: auto; margin-right: auto; }

/* 首屏玻璃標題板 */
.ao-doc > header[data-part="hero"] {
  position: relative; z-index: 2;
  max-width: 54rem; margin: clamp(-13rem, -22vh, -4.5rem) auto 0;
  padding: clamp(1.4rem, 3.4vw, 2.6rem) clamp(1.25rem, 4vw, 3rem) clamp(1.3rem, 3vw, 2.2rem);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(30, 34, 92, .72), rgba(14, 16, 54, .82));
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid var(--hair-hi);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .7), inset 0 1px 0 rgba(255, 255, 255, .08);
}
.ao-doc > header[data-part="hero"]::before {
  content: ""; position: absolute; left: clamp(1.25rem, 4vw, 3rem); top: -1px; width: 5.5rem; height: 2px; border-radius: 2px;
  background: var(--neon); box-shadow: 0 0 12px rgba(62, 230, 224, .7);
}
[data-part="kicker"] { margin: 0 0 .9rem; font-size: .84rem; font-weight: 700; letter-spacing: .16em; color: var(--neon); }
.ao-doc h1 { margin: 0 0 1rem; font-size: clamp(1.6rem, 1.05rem + 2.1vw, 2.65rem); line-height: 1.32; font-weight: 900; letter-spacing: .01em; color: #fff; text-wrap: balance; }
[data-part="dek"] { margin: 0 0 1.3rem; font-size: clamp(1.02rem, .95rem + .3vw, 1.14rem); line-height: 1.85; color: var(--ink-2); max-width: 42em; }
[data-part="meta"] {
  display: inline-flex; align-items: center; gap: .55rem; flex-wrap: wrap;
  margin: 0; padding: .35rem .95rem .35rem .75rem; border-radius: var(--r-pill);
  border: 1px solid var(--hair); background: rgba(255, 255, 255, .04);
  font-size: .86rem; line-height: 1.55; color: var(--ink-2);
}
[data-part="meta"]::before { content: ""; width: .45rem; height: .45rem; border-radius: 50%; background: var(--neon); box-shadow: 0 0 8px var(--neon); flex: none; }

/* 章節 */
.ao-doc { counter-reset: aosec; }
.ao-doc > section { padding-top: clamp(3rem, 6vw, 4.6rem); scroll-margin-top: calc(var(--caps-h) + .75rem); }
.ao-doc > section[id] { counter-increment: aosec; }
.ao-doc h2 {
  position: relative; margin: 0 0 1.4rem; padding-top: 1.35rem;
  font-size: clamp(1.32rem, 1.1rem + .9vw, 1.72rem); line-height: 1.45; font-weight: 700; color: #fff; letter-spacing: .01em;
}
.ao-doc > section[id] > h2::before {
  content: counter(aosec, decimal-leading-zero);
  position: absolute; left: 0; top: -.5rem;
  font: 600 .78rem/1 var(--mono); letter-spacing: .14em; color: var(--neon);
  padding: .3rem .6rem; border: 1px solid var(--neon-soft); border-radius: var(--r-pill);
  background: var(--neon-faint);
}
.ao-doc > section[id] > h2::after {
  content: ""; position: absolute; left: 3.6rem; right: 0; top: -.1rem; height: 1px;
  background: linear-gradient(90deg, var(--hair-hi), transparent 85%);
}
.ao-doc h3 { margin: 2.4rem 0 .8rem; font-size: 1.16rem; line-height: 1.55; font-weight: 700; color: #f6f7ff; display: flex; gap: .65rem; align-items: baseline; }
.ao-doc h3::before { content: ""; flex: none; width: .5rem; height: .5rem; transform: translateY(-.12rem) rotate(45deg); border: 1.5px solid var(--neon); border-radius: 2px; }
.ao-doc p { margin: 0 0 1.15rem; }
.ao-doc strong { color: #fff; font-weight: 700; }
.ao-doc section > p, .ao-doc section li, .ao-doc dd { color: var(--ink); }

/* 表格(玻璃) */
.ao-doc table {
  width: 100%; margin: 1.6rem 0 1.8rem; border-collapse: separate; border-spacing: 0;
  font-size: .95rem; line-height: 1.7;
  background: var(--glass); border: 1px solid var(--hair); border-radius: var(--r-md); overflow: hidden;
}
.ao-doc th { text-align: left; font-weight: 700; font-size: .82rem; letter-spacing: .08em; color: var(--neon); background: rgba(62, 230, 224, .06); padding: .75rem .95rem; border-bottom: 1px solid var(--hair-hi); vertical-align: bottom; }
.ao-doc td { padding: .8rem .95rem; vertical-align: top; color: var(--ink); border-bottom: 1px solid var(--hair); }
.ao-doc tbody tr:last-child td { border-bottom: 0; }
.ao-doc td { min-width: 7em; }
.ao-doc td:first-child { font-weight: 700; color: #fff; min-width: 5.5em; }
.ao-doc tbody tr:nth-child(even) td { background: rgba(255, 255, 255, .022); }
.ao-tbl { margin: 1.6rem 0 1.8rem; overflow-x: auto; border-radius: var(--r-md); }
.ao-tbl table { margin: 0; }

/* 定義清單 */
.ao-doc dl { margin: 1.2rem 0 1.6rem; display: grid; grid-template-columns: max-content 1fr; border-top: 1px solid var(--hair); }
.ao-doc dt, .ao-doc dd { padding: .7rem 0; border-bottom: 1px solid var(--hair); margin: 0; }
.ao-doc dt { padding-right: 1.3rem; font-weight: 700; color: #fff; }
.ao-doc dt::before { content: ""; display: inline-block; width: .38rem; height: .38rem; margin-right: .55rem; vertical-align: .18em; border-radius: 50%; background: var(--neon); opacity: .8; }
.ao-doc dd { color: var(--ink-2); }

/* 一般清單 */
.ao-doc ul, .ao-doc ol:not([data-part]) { padding-left: 1.3rem; margin: 0 0 1.2rem; }
.ao-doc ul li::marker { color: var(--neon); }

/* ───────── 簽名組件:玻璃步驟卡 ───────── */
ol[data-part="steps"] { list-style: none; margin: 1.6rem 0 2rem; padding: 0; counter-reset: aostep; display: grid; gap: .85rem; position: relative; }
ol[data-part="steps"] > li {
  counter-increment: aostep; position: relative;
  padding: 1.1rem 1.2rem 1.15rem 4.35rem; border-radius: var(--r-md);
  background: linear-gradient(150deg, rgba(236, 240, 255, .075), rgba(236, 240, 255, .03));
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border: 1px solid var(--hair);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06);
  line-height: 1.8;
  transition: border-color .25s, background-color .25s;
}
ol[data-part="steps"] > li::before {
  content: counter(aostep);
  position: absolute; left: 1.05rem; top: 1.05rem;
  width: 2.3rem; height: 2.3rem; display: grid; place-items: center;
  font: 600 1rem/1 var(--mono); color: var(--neon);
  border-radius: 50%; border: 1px solid var(--neon-soft);
  background: radial-gradient(circle at 50% 35%, rgba(62, 230, 224, .16), rgba(62, 230, 224, .02) 70%);
}
ol[data-part="steps"] > li::after {
  content: ""; position: absolute; left: 1.2rem; right: 1.2rem; top: -1px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(62, 230, 224, .55) 30%, transparent 75%);
  opacity: .55;
}
ol[data-part="steps"] > li > strong:first-child { display: block; margin-bottom: .25rem; font-size: 1.03rem; color: #fff; }
ol[data-part="steps"] > li.is-done { border-color: var(--neon-soft); background: linear-gradient(150deg, rgba(62, 230, 224, .07), rgba(236, 240, 255, .025)); }
ol[data-part="steps"] > li.is-done::before { content: "✓"; color: var(--nt); background: var(--neon); border-color: var(--neon); font-family: inherit; font-weight: 700; }
.ao-tick {
  margin-top: .6rem; display: flex; width: fit-content; align-items: center; gap: .4rem;
  font: inherit; font-size: .8rem; line-height: 1.4; color: var(--ink-2); cursor: pointer;
  padding: .25rem .7rem; border-radius: var(--r-pill); border: 1px solid var(--hair); background: transparent;
}
.ao-tick::before { content: ""; width: .7rem; height: .7rem; border-radius: 3px; border: 1.5px solid currentColor; }
.ao-tick:hover { color: var(--ink); border-color: var(--hair-hi); }
.ao-tick[aria-pressed="true"] { color: var(--neon); border-color: var(--neon-soft); }
.ao-tick[aria-pressed="true"]::before { background: var(--neon); border-color: var(--neon); }
.ao-tick-sum { display: block; margin: -1.2rem 0 1.8rem; font-size: .82rem; color: var(--ink-3); text-align: right; }

/* ───────── 截圖:淺色框,避免被深底吞掉 ───────── */
figure[data-part="shot"] {
  display: grid; grid-template-columns: fit-content(100%); justify-content: center;
  margin: 2rem 0 2.2rem;
}
.ao-doc > section > figure[data-part="shot"] { margin-left: calc(50% - min(25rem, 50vw - var(--gut))); margin-right: calc(50% - min(25rem, 50vw - var(--gut))); }
figure[data-part="shot"] img {
  border-radius: .7rem; background: var(--paper);
  padding: .55rem; border: 1px solid rgba(255, 255, 255, .7);
  box-shadow: 0 0 0 1px rgba(62, 230, 224, .28), 0 26px 50px -24px rgba(0, 0, 0, .75);
}
figure.ao-tall img, figure[data-part="shot"] img[src*="-m."] { width: min(100%, 23rem); }
figure[data-part="shot"] figcaption {
  margin-top: .75rem; font-size: .86rem; line-height: 1.6; color: var(--ink-2);
  contain: inline-size; display: flex; gap: .55rem; align-items: baseline;
}
figure[data-part="shot"] figcaption::before { content: ""; flex: none; width: 1.1rem; height: 1px; background: var(--neon); transform: translateY(-.25rem); }

/* ───────── 提示框 ───────── */
[data-part="note"], [data-part="warn"] {
  position: relative; margin: 1.8rem 0 2rem; padding: 1.15rem 1.3rem 1.15rem 3.4rem;
  border-radius: var(--r-md); font-size: .98rem; line-height: 1.8;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
[data-part="note"] > p:last-child, [data-part="warn"] > p:last-child { margin-bottom: 0; }
[data-part="note"] { background: rgba(244, 196, 126, .06); border: 1px solid rgba(244, 196, 126, .32); }
[data-part="warn"] { background: rgba(255, 134, 176, .065); border: 1px solid rgba(255, 134, 176, .38); }
[data-part="note"]::before, [data-part="warn"]::before {
  position: absolute; left: 1.15rem; top: 1.2rem; width: 1.4rem; height: 1.4rem; display: grid; place-items: center;
  font-size: .8rem; font-weight: 900; border-radius: 50%;
}
[data-part="note"]::before { content: "i"; color: var(--amber); border: 1.5px solid var(--amber); font-family: Georgia, serif; font-style: italic; }
[data-part="warn"]::before { content: "!"; color: var(--rose); border: 1.5px solid var(--rose); }
[data-part="warn"] strong { color: #ffd2e2; }
[data-part="note"] strong { color: #ffe6c2; }

/* ───────── CTA:邀請碼玻璃面板 ───────── */
aside[data-part="cta"] {
  position: relative; margin: 3.2rem auto 1rem; padding: clamp(1.4rem, 3.4vw, 2.1rem);
  border-radius: var(--r-lg);
  background:
    radial-gradient(26rem 14rem at 100% 0%, rgba(62, 230, 224, .13), transparent 70%),
    linear-gradient(160deg, rgba(34, 40, 104, .8), rgba(16, 18, 60, .9));
  border: 1px solid var(--neon-soft);
  box-shadow: 0 0 0 1px rgba(62, 230, 224, .08), 0 24px 60px -28px rgba(62, 230, 224, .35), inset 0 1px 0 rgba(255, 255, 255, .08);
}
aside[data-part="cta"] > p { margin: 0 0 .9rem; color: var(--ink); }
aside[data-part="cta"] > p:first-child { display: flex; align-items: center; flex-wrap: wrap; gap: .6rem .9rem; font-size: .95rem; font-weight: 500; color: var(--ink-2); margin-bottom: 1.1rem; }
aside[data-part="cta"] > p:first-child strong {
  font: 700 clamp(1.7rem, 1.2rem + 2vw, 2.4rem)/1.1 var(--mono); letter-spacing: .14em; color: #fff;
  padding: .45rem .9rem .45rem 1.05rem; border-radius: .7rem;
  border: 1px dashed rgba(62, 230, 224, .6); background: rgba(6, 8, 30, .55);
  text-shadow: 0 0 18px rgba(62, 230, 224, .35);
}
.ao-copy {
  font: inherit; font-size: .88rem; font-weight: 700; cursor: pointer;
  padding: .55rem 1rem; border-radius: var(--r-pill);
  color: var(--neon); background: transparent; border: 1px solid var(--neon-soft);
  transition: background-color .2s, color .2s;
}
.ao-copy:hover { background: var(--neon-faint); }
.ao-copy.is-ok { color: var(--nt); background: var(--neon); border-color: var(--neon); }
aside[data-part="cta"] a[data-cta] {
  display: flex; justify-content: center; align-items: center; gap: .6rem;
  margin: 1.3rem 0 1.15rem; padding: .95rem 1.4rem; border-radius: var(--r-pill);
  background: var(--neon); color: #07092a; font-weight: 900; font-size: 1.06rem; letter-spacing: .04em; text-decoration: none;
  box-shadow: 0 10px 30px -12px rgba(62, 230, 224, .75);
  transition: transform .2s, box-shadow .2s, background-color .2s;
}
aside[data-part="cta"] a[data-cta]::after { content: "↗"; font-weight: 700; }
aside[data-part="cta"] a[data-cta]:hover { background: #7af1ec; color: #07092a; transform: translateY(-1px); box-shadow: 0 14px 34px -12px rgba(62, 230, 224, .9); }
aside[data-part="cta"] > p:last-child { margin: 0; padding-top: 1rem; border-top: 1px solid var(--hair); font-size: .94rem; line-height: 1.8; color: var(--ink-2); }
aside[data-part="cta"] > p:last-child a { color: #9ff6f1; }

/* ───────── FAQ ───────── */
#faq details {
  margin: 0 0 .7rem; border-radius: var(--r-md);
  background: var(--glass); border: 1px solid var(--hair);
  transition: border-color .25s, background-color .25s;
}
#faq details[open] { border-color: var(--neon-soft); background: var(--glass-hi); }
#faq summary {
  list-style: none; cursor: pointer; position: relative;
  padding: 1rem 3.4rem 1rem 1.2rem; font-weight: 700; line-height: 1.6; color: #fff;
}
#faq summary::-webkit-details-marker { display: none; }
#faq summary::after, #faq summary::before {
  content: ""; position: absolute; right: 1.3rem; top: 50%; width: .8rem; height: 1.5px; background: var(--neon);
  transition: transform .25s;
}
#faq summary::before { transform: rotate(90deg); }
#faq details[open] summary::before { transform: rotate(0); }
#faq summary:hover { color: #dafffd; }
#faq details > p { margin: 0; padding: 0 1.2rem 1.15rem; color: var(--ink-2); line-height: 1.85; }

/* ───────── 站務頁 ───────── */
.ao-read--page { max-width: calc(var(--col) + 2 * var(--gut) + 6rem); margin: 0 auto; padding-top: clamp(2rem, 5vw, 3.5rem); }
.ao-crumb { margin: 0 0 1rem; font-size: .85rem; color: var(--ink-3); display: flex; gap: .55rem; }
.ao-crumb a { color: var(--ink-2); text-decoration: none; }
.ao-crumb__here::after { color: var(--ink-2); }
[data-crumb="about"]::after { content: "關於本站"; }
[data-crumb="contact"]::after { content: "聯絡我們"; }
[data-crumb="privacy"]::after { content: "隱私權政策"; }
[data-crumb="disclosure"]::after { content: "推廣披露"; }
.ao-sheet {
  position: relative; padding: clamp(1.5rem, 4vw, 3rem);
  border-radius: var(--r-lg); background: linear-gradient(160deg, rgba(30, 34, 92, .55), rgba(14, 16, 54, .6));
  border: 1px solid var(--hair-hi); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .07);
}
.ao-sheet::before { content: ""; position: absolute; left: clamp(1.5rem, 4vw, 3rem); top: -1px; width: 4.5rem; height: 2px; background: var(--neon); box-shadow: 0 0 10px rgba(62, 230, 224, .6); }
.ao-sheet h1 { margin: 0 0 1.3rem; font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.2rem); line-height: 1.35; font-weight: 900; color: #fff; }
.ao-sheet h2 { margin: 2.2rem 0 .8rem; font-size: 1.2rem; line-height: 1.5; color: #fff; padding-bottom: .5rem; border-bottom: 1px solid var(--hair); }
.ao-sheet p, .ao-sheet li, .ao-sheet dd { color: var(--ink); }
.ao-sheet p { margin: 0 0 1.1rem; }
.ao-sheet dl { margin: 1rem 0 1.4rem; }
.ao-sheet dt { font-weight: 700; color: #fff; margin-top: .8rem; }
.ao-sheet dd { margin: .2rem 0 0; color: var(--ink-2); }
.ao-back { margin: 1.6rem 0 0; font-size: .95rem; }
.ao-back a::before { content: "← "; }
.ao-nav a.is-here, body[data-page="about"] .ao-nav a[href="/about/"], body[data-page="contact"] .ao-nav a[href="/contact/"] { color: var(--ink); border-color: var(--hair-hi); background: var(--glass); }

/* 404 */
.ao-lost { max-width: 40rem; margin: 0 auto; padding: clamp(4rem, 12vh, 8rem) var(--gut) 5rem; text-align: center; }
.ao-lost .ao-lost__code { font: 600 clamp(4rem, 3rem + 6vw, 7rem)/1 var(--mono); letter-spacing: .08em; color: transparent; -webkit-text-stroke: 1.5px var(--neon); margin: 0 0 1.2rem; }
.ao-lost h1 { margin: 0 0 1rem; font-size: clamp(1.4rem, 1.1rem + 1.2vw, 1.9rem); color: #fff; font-weight: 900; }
.ao-lost p { color: var(--ink-2); margin: 0 0 1.6rem; }
.ao-lost__go { display: inline-flex; padding: .8rem 1.5rem; border-radius: var(--r-pill); border: 1px solid var(--neon); color: var(--neon); text-decoration: none; font-weight: 700; }
.ao-lost__go:hover { background: var(--neon-faint); color: #dafffd; }

/* ───────── 頁尾 ───────── */
.ao-foot { border-top: 1px solid var(--hair); background: rgba(8, 10, 36, .7); }
.ao-foot__in { max-width: 76rem; margin: 0 auto; padding: 2.6rem var(--gut) 2.2rem; display: grid; gap: 1.2rem 2rem; grid-template-columns: 1fr; }
.ao-foot__mail { margin: .6rem 0 0; font-size: .9rem; color: var(--ink-2); }
.ao-foot__links { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem; align-content: start; }
.ao-foot__links a { display: inline-block; font-size: .9rem; color: var(--ink-2); text-decoration: none; padding: .3rem .85rem; border: 1px solid var(--hair); border-radius: var(--r-pill); }
.ao-foot__links a:hover { color: var(--ink); border-color: var(--neon-soft); }
.ao-foot__risk { margin: 0; font-size: .9rem; color: var(--ink-2); }
.ao-foot__c { margin: 0; font-size: .82rem; color: var(--ink-3); }

@media (min-width: 46em) {
  .ao-foot__in { grid-template-columns: auto 1fr; }
  .ao-foot__links { justify-content: flex-end; }
  .ao-foot__risk, .ao-foot__c { grid-column: 1 / -1; }
  .ao-foot__c { padding-top: 1rem; border-top: 1px solid var(--hair); }
}

@media (max-width: 45.99em) {
  body { font-size: 1.0625rem; line-height: 1.82; }
  :root { --caps-h: 3.1rem; }
  .ao-nav a { padding: .28rem .6rem; font-size: .9rem; }
  .ao-caps__tag { display: none; }
  .ao-caps__in { padding-left: 0; }
  .ao-caps__row { padding-left: var(--gut); }
  .ao-cap a { max-width: 13em; font-size: .84rem; }
  .ao-sky { height: clamp(13rem, 34vh, 17rem); }
  .ao-doc > header[data-part="hero"] { margin-top: -3.5rem; }
  .ao-doc table { font-size: .9rem; }
  .ao-doc th, .ao-doc td { padding: .65rem .7rem; }
  .ao-doc td { min-width: 6em; }
  .ao-doc td:first-child { min-width: 4.5em; }
  .ao-doc dl { grid-template-columns: 1fr; }
  .ao-doc dt { padding-bottom: 0; border-bottom: 0; }
  .ao-doc dd { padding-top: .15rem; padding-left: 1rem; }
  ol[data-part="steps"] > li { padding: 1rem 1rem 1.05rem 3.6rem; }
  ol[data-part="steps"] > li::before { left: .8rem; top: .95rem; width: 2rem; height: 2rem; font-size: .9rem; }
  figure[data-part="shot"] img { padding: .35rem; }
  [data-part="note"], [data-part="warn"] { padding: 1rem 1rem 1rem 2.9rem; }
  [data-part="note"]::before, [data-part="warn"]::before { left: .85rem; top: 1.08rem; }
  aside[data-part="cta"] > p:first-child strong { letter-spacing: .1em; }
  [data-part="meta"] { display: flex; flex-wrap: nowrap; align-items: flex-start; border-radius: .9rem; padding: .55rem .9rem; font-size: .84rem; }
  [data-part="meta"]::before { margin-top: .5em; }
  .ao-doc > header[data-part="hero"] { padding-bottom: 1.3rem; }
}

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