@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@300;400;500;700&family=Noto+Serif+TC:wght@400;500;600;700&display=swap');

:root {
  --ink: #0d0d0d;
  --ink2: #131019;
  --ink3: #1b1524;
  --violet: #8000ff;
  --magenta: #ff00ff;
  --txt: #eae4f6;
  --dim: #a396bd;
  --edge: rgba(128, 0, 255, .3);
  --edge2: rgba(255, 0, 255, .34);
  --serif: "Noto Serif TC", Georgia, "Songti TC", serif;
  --sans: "Noto Sans TC", system-ui, -apple-system, "PingFang TC", "Microsoft JhengHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
  --dock: 74px;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  padding-bottom: calc(var(--dock) + 20px);
  background:
    radial-gradient(880px 560px at 88% -8%, rgba(255, 0, 255, .16), transparent 64%),
    radial-gradient(720px 520px at -6% 8%, rgba(128, 0, 255, .2), transparent 62%),
    var(--ink);
  color: var(--txt);
  font: 400 17px/1.85 var(--sans);
  letter-spacing: .012em;
  overflow-x: hidden;
}

body.locked { overflow: hidden; }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(128, 0, 255, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(128, 0, 255, .07) 1px, transparent 1px);
  background-size: 100% 46px, 46px 100%;
  opacity: .55;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(0, 0, 0, .3) 0 1px, transparent 1px 3px);
  opacity: .55;
}

a { color: inherit; }

.kicker,
.doc small {
  display: block;
  margin: 0 0 .5rem;
  font: 500 16px/1.4 var(--mono);
  letter-spacing: .24em;
  color: var(--magenta);
  text-shadow: 0 0 9px rgba(255, 0, 255, .55);
}

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 45vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(30px, 7vw, 66px) 20px;
  overflow: hidden;
  border-bottom: 1px solid var(--edge);
}

.hero__ghost {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font: 700 clamp(7rem, 25vw, 16rem)/1 var(--serif);
  letter-spacing: -.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 0, 255, .34);
  text-shadow: 0 0 46px rgba(128, 0, 255, .5);
  pointer-events: none;
  user-select: none;
}

.hero__inner {
  position: relative;
  max-width: 820px;
}

.hero__title {
  margin: 0;
  font: 600 clamp(1.9rem, 6.4vw, 3.15rem)/1.28 var(--serif);
  letter-spacing: .02em;
  color: #fff;
  text-shadow: 0 0 18px rgba(128, 0, 255, .85), 0 0 44px rgba(255, 0, 255, .35);
}

.hero__desc {
  margin: .9rem auto 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--dim);
}

.hero__bar {
  display: block;
  width: 92px;
  height: 2px;
  margin: 1.5rem auto 0;
  background: linear-gradient(90deg, transparent, var(--magenta), transparent);
  box-shadow: 0 0 14px var(--magenta);
}

/* ---------- 正文 ---------- */
.main { position: relative; z-index: 1; }

.wrap {
  max-width: 800px;
  margin: 0 auto;
  padding: clamp(24px, 5vw, 46px) 18px 10px;
}

.panel {
  padding: clamp(18px, 4vw, 36px);
  background: var(--ink2);
  border-top: 2px solid var(--violet);
  box-shadow: 0 0 0 1px rgba(128, 0, 255, .13);
}

.doc {
  font-size: 17px;
  overflow-wrap: break-word;
}

.doc > article {
  padding: 1.5rem 0 2.3rem;
  border-top: 1px dashed rgba(128, 0, 255, .24);
  scroll-margin-top: 26px;
}

.doc > article:first-child {
  border-top: 0;
  padding-top: .2rem;
}

.doc h2 {
  margin: .2rem 0 1rem;
  font: 600 clamp(1.28rem, 3.4vw, 1.62rem)/1.4 var(--serif);
  letter-spacing: .01em;
  color: #fff;
  text-shadow: 0 0 13px rgba(255, 0, 255, .45);
}

.doc h3 {
  margin: 1.6rem 0 .7rem;
  font: 600 1.18rem/1.5 var(--serif);
  color: #f4ebff;
}

.doc p { margin: 0 0 1.05rem; }

.doc ul, .doc ol { margin: 0 0 1.15rem; padding-left: 1.35rem; }

.doc li { margin: .35rem 0; }

.doc ul { list-style: none; padding-left: 1.1rem; }

.doc ul > li { position: relative; }

.doc ul > li::before {
  content: "";
  position: absolute;
  left: -1rem;
  top: .74em;
  width: 7px;
  height: 7px;
  background: var(--violet);
  box-shadow: 0 0 8px var(--violet);
  transform: rotate(45deg);
}

.doc a {
  color: #ffa3ff;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 0, 255, .45);
  transition: color .2s, border-color .2s, text-shadow .2s;
}

.doc a:hover,
.doc a:focus-visible {
  color: #fff;
  border-color: #fff;
  text-shadow: 0 0 10px var(--magenta);
}

.doc strong {
  color: #fff;
  background: linear-gradient(transparent 68%, rgba(128, 0, 255, .55) 68%);
}

.doc blockquote {
  margin: 0 0 1.2rem;
  padding: .6rem 0 .6rem 1.1rem;
  border-left: 2px solid var(--magenta);
  color: #ddcff3;
  background: linear-gradient(90deg, rgba(255, 0, 255, .09), transparent);
}

.doc img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.3rem 0;
}

.doc table {
  width: 100%;
  margin: 0 0 1.2rem;
  border-collapse: collapse;
  font-size: 16px;
}

.doc th, .doc td {
  padding: .5rem .6rem;
  border: 1px solid rgba(128, 0, 255, .28);
  text-align: left;
  vertical-align: top;
}

.doc th { background: rgba(128, 0, 255, .17); color: #fff; }

.doc pre {
  overflow-x: auto;
  padding: .9rem;
  background: #0a0810;
  border-left: 2px solid var(--violet);
}

.doc code { font-family: var(--mono); font-size: 16px; }

.doc hr {
  border: 0;
  border-top: 1px dashed rgba(128, 0, 255, .3);
  margin: 1.6rem 0;
}

/* ---------- 抽屉导航 ---------- */
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  width: min(430px, 100%);
  padding: 18px 20px 40px;
  overflow-y: auto;
  background: linear-gradient(180deg, rgba(128, 0, 255, .12), transparent 30%), #0b0a10;
  border-left: 2px solid var(--violet);
  box-shadow: -24px 0 70px rgba(128, 0, 255, .38);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform .38s cubic-bezier(.2, .8, .2, 1), visibility .38s;
}

.drawer.is-open {
  transform: none;
  visibility: visible;
}

.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--edge);
}

.drawer__brand {
  font: 600 17px/1.4 var(--serif);
  letter-spacing: .08em;
  color: #fff;
  text-shadow: 0 0 12px rgba(128, 0, 255, .9);
}

.drawer__close {
  min-height: 44px;
  padding: 10px 16px;
  font: 500 16px/1 var(--sans);
  color: var(--magenta);
  background: transparent;
  border: 1px solid var(--edge2);
  cursor: pointer;
  transition: background .2s, color .2s, box-shadow .2s;
}

.drawer__close:hover,
.drawer__close:focus-visible {
  color: #fff;
  background: rgba(255, 0, 255, .18);
  box-shadow: 0 0 16px rgba(255, 0, 255, .5);
}

.drawer__h2 {
  margin: 0 0 1rem;
  font: 600 1.42rem/1.4 var(--serif);
  color: #fff;
  text-shadow: 0 0 14px rgba(255, 0, 255, .5);
}

.drawer__search { margin-bottom: 1.2rem; }

.search {
  width: 100%;
  min-height: 46px;
  padding: 10px 14px;
  font: 400 16px/1.4 var(--sans);
  color: var(--txt);
  background: #101019;
  border: 1px solid var(--edge);
  border-radius: 0;
  transition: border-color .2s, box-shadow .2s;
}

.search::placeholder { color: #7d7192; }

.search:focus {
  outline: none;
  border-color: var(--magenta);
  box-shadow: 0 0 0 2px rgba(255, 0, 255, .18);
}

.drawer__nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.drawer__nav li { border-bottom: 1px dashed rgba(128, 0, 255, .22); }

.drawer__nav li.is-out { display: none; }

.drawer__link {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 52px;
  padding: 12px 4px;
  font-size: 18px;
  color: var(--txt);
  text-decoration: none;
  transition: color .2s, padding-left .2s;
}

.drawer__link:hover,
.drawer__link:focus-visible {
  color: #fff;
  padding-left: 12px;
  text-shadow: 0 0 12px var(--magenta);
}

.drawer__num {
  font: 500 16px/1 var(--mono);
  letter-spacing: .1em;
  color: var(--violet);
  text-shadow: 0 0 8px rgba(128, 0, 255, .8);
}

.drawer__empty {
  padding: 14px 4px;
  font-size: 16px;
  color: var(--dim);
}

.drawer__empty[hidden] { display: none; }

/* ---------- 页脚 ---------- */
.foot {
  position: relative;
  z-index: 1;
  margin-top: clamp(30px, 6vw, 58px);
  background: linear-gradient(180deg, rgba(128, 0, 255, .12), transparent 44%), #0a090e;
  border-top: 2px solid var(--magenta);
}

.foot__cta {
  padding: clamp(28px, 6vw, 54px) 20px;
  text-align: center;
  border-bottom: 1px dashed rgba(255, 0, 255, .26);
}

.foot__cta h2 {
  margin: .2rem 0 1.25rem;
  font: 600 clamp(1.4rem, 4.4vw, 2rem)/1.36 var(--serif);
  color: #fff;
  text-shadow: 0 0 18px rgba(255, 0, 255, .5);
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 12px 30px;
  font-weight: 500;
  letter-spacing: .16em;
  color: #fff;
  text-decoration: none;
  background: var(--violet);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  box-shadow: 0 0 24px rgba(128, 0, 255, .6);
  transition: background .2s, box-shadow .2s, transform .2s;
}

.cta:hover,
.cta:focus-visible {
  background: var(--magenta);
  box-shadow: 0 0 26px rgba(255, 0, 255, .7);
  transform: translateY(-2px);
}

.foot__cols {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr;
  gap: 26px;
  max-width: 800px;
  margin: 0 auto;
  padding: clamp(26px, 5vw, 42px) 20px;
}

.foot__brand {
  display: inline-block;
  padding: 8px 0;
  min-height: 40px;
  font: 600 18px/1.4 var(--serif);
  letter-spacing: .06em;
  color: #fff;
  text-decoration: none;
  text-shadow: 0 0 12px rgba(128, 0, 255, .8);
}

.foot__brand:hover { color: #ffb3ff; }

.foot__note {
  margin: .2rem 0 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--dim);
}

.foot__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.foot__list a {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 0;
  font-size: 16px;
  color: var(--dim);
  text-decoration: none;
  transition: color .2s, text-shadow .2s;
}

.foot__list a:hover,
.foot__list a:focus-visible {
  color: #fff;
  text-shadow: 0 0 10px var(--magenta);
}

.foot__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 800px;
  margin: 0 auto;
  padding: 16px 20px calc(22px);
  border-top: 1px solid rgba(128, 0, 255, .2);
  font-size: 16px;
  color: var(--dim);
}

.foot__base a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 2px;
  color: var(--magenta);
  text-decoration: none;
}

.foot__base a:hover { color: #fff; text-shadow: 0 0 10px var(--magenta); }

/* ---------- 底部固定条 ---------- */
.dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
  background: rgba(11, 10, 16, .94);
  border-top: 1px solid var(--edge2);
  backdrop-filter: blur(9px);
}

.dock__btn {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 12px;
  font: 500 16px/1 var(--sans);
  color: #ffa3ff;
  background: transparent;
  border: 1px solid var(--edge2);
  cursor: pointer;
  transition: background .2s, color .2s, box-shadow .2s;
}

.dock__btn:hover,
.dock__btn:focus-visible {
  color: #fff;
  background: rgba(255, 0, 255, .16);
  box-shadow: 0 0 16px rgba(255, 0, 255, .45);
}

.dock__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 16px;
  height: 12px;
}

.dock__bars span {
  height: 2px;
  background: currentColor;
  box-shadow: 0 0 6px currentColor;
}

.dock__brand {
  padding: 10px 6px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font: 600 17px/1.3 var(--serif);
  letter-spacing: .08em;
  color: #fff;
  text-decoration: none;
  text-shadow: 0 0 12px rgba(128, 0, 255, .95);
}

.dock__up {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 12px;
  font-size: 16px;
  color: var(--dim);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color .2s, border-color .2s;
}

.dock__up:hover,
.dock__up:focus-visible {
  color: #fff;
  border-color: var(--edge);
}

/* ---------- 动效 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .hero__title { animation: glitchIn .9s steps(6, end) 1 both; }

  .drawer.is-open .drawer__link {
    animation: slideIn .42s cubic-bezier(.2, .8, .2, 1) both;
    animation-delay: calc(var(--i, 0) * 45ms);
  }
}

@keyframes glitchIn {
  0% { transform: translateX(-7px) skewX(-6deg); opacity: .35; }
  30% { transform: translateX(6px) skewX(4deg); opacity: .8; }
  60% { transform: translateX(-3px) skewX(-1deg); }
  100% { transform: none; opacity: 1; }
}

@keyframes slideIn {
  0% { opacity: 0; transform: translateX(26px); }
  100% { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ---------- 窄屏 ---------- */
@media (max-width: 620px) {
  .foot__cols { grid-template-columns: 1fr; gap: 10px; }
  .foot__base { padding-bottom: 18px; }
}

@media (max-width: 400px) {
  body { font-size: 16px; }
  .wrap { padding-left: 13px; padding-right: 13px; }
  .panel { padding-left: 14px; padding-right: 14px; }
  .dock { padding-left: 9px; padding-right: 9px; gap: 4px; }
  .dock__label { display: none; }
  .hero { padding-left: 14px; padding-right: 14px; }
}

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