/* =========================================================================
   NOVAYARD — 01 / COMPONENTS
   启动序列 · 光标 · 导航 · 按钮 · 玻璃面板 · 表单 · 折叠 · 标签页
   ========================================================================= */

/* ===================== 启动序列 ===================== */
.boot {
  position: fixed;
  inset: 0;
  z-index: var(--z-boot);
  background: radial-gradient(120% 90% at 50% 40%, #071019 0%, #03050a 62%);
  display: grid;
  place-items: center;
  transition: opacity 0.85s var(--e-in-out), visibility 0.85s;
}
.boot.is-done { opacity: 0; visibility: hidden; }

.boot__grid {
  position: absolute;
  inset: -10%;
  background-image:
    linear-gradient(to right, rgba(120, 170, 200, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 170, 200, 0.055) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(62% 62% at 50% 46%, #000 0%, transparent 78%);
  animation: bootDrift 22s linear infinite;
}
@keyframes bootDrift { to { transform: translate3d(88px, 88px, 0); } }

.boot__inner {
  position: relative;
  width: min(420px, 78vw);
  display: grid;
  gap: 1.1rem;
  justify-items: center;
}

.boot__mark { width: 62px; color: var(--cyan); opacity: 0.9; }
.boot__mark svg { animation: bootSpin 9s linear infinite; filter: drop-shadow(0 0 14px rgba(46, 230, 200, 0.45)); }
@keyframes bootSpin { to { transform: rotate(360deg); } }

.boot__bar {
  width: 100%;
  height: 1px;
  background: rgba(158, 190, 220, 0.16);
  position: relative;
  overflow: hidden;
}
.boot__bar i {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  box-shadow: 0 0 12px rgba(46, 230, 200, 0.9);
  transition: width 0.36s var(--e-soft);
}

.boot__meta {
  width: 100%;
  display: flex;
  justify-content: space-between;
  color: var(--txt-3);
  font-size: 0.62rem;
}
#bootPct { color: var(--cyan); }

.boot__log {
  width: 100%;
  display: grid;
  gap: 0.18rem;
  margin-top: 0.6rem;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--txt-3);
  min-height: 4.4em;
  text-transform: none;
}
.boot__log li { animation: logIn 0.4s var(--e-out) both; }
.boot__log li::before { content: "› "; color: var(--cyan); opacity: .6; }
@keyframes logIn { from { opacity: 0; transform: translateX(-6px); } }

/* ===================== 自定义光标 ===================== */
.cursor {
  position: fixed;
  top: 0; left: 0;
  z-index: var(--z-cursor);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s;
  mix-blend-mode: screen;
  visibility: hidden;
}
body.has-cursor .cursor { opacity: 1; visibility: visible; }

.cursor__dot {
  position: absolute;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 10px rgba(46, 230, 200, 0.9);
}
.cursor__ring {
  position: absolute;
  width: 34px; height: 34px;
  border: 1px solid rgba(46, 230, 200, 0.45);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.32s var(--e-out), height 0.32s var(--e-out),
    border-color 0.32s, background-color 0.32s;
  display: grid;
  place-items: center;
}
.cursor__label {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #03130f;
  opacity: 0;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.cursor.is-hover .cursor__ring {
  width: 62px; height: 62px;
  background: rgba(46, 230, 200, 0.1);
  border-color: rgba(46, 230, 200, 0.85);
}
.cursor.is-label .cursor__ring {
  width: 78px; height: 78px;
  background: var(--cyan);
  border-color: var(--cyan);
}
.cursor.is-label .cursor__label { opacity: 1; }
.cursor.is-down .cursor__ring { width: 22px; height: 22px; }

/* ===================== 滚动进度 ===================== */
.scroll-rail {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 70;
  background: rgba(158, 190, 220, 0.06);
  pointer-events: none;
}
.scroll-rail i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--blue) 60%, var(--violet));
  box-shadow: 0 0 14px rgba(46, 230, 200, 0.6);
  transform-origin: left;
}

/* ===================== 导航 ===================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0 var(--gutter);
  border-bottom: 1px solid transparent;
  transition: background 0.5s var(--e-soft), border-color 0.5s, backdrop-filter 0.5s,
    height 0.45s var(--e-out);
}
.nav.is-stuck {
  height: 62px;
  background: rgba(4, 7, 12, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-shrink: 0;
}
.nav__mark { width: 27px; color: var(--titanium); transition: color 0.35s, filter 0.35s; }
.nav__brand:hover .nav__mark { color: var(--cyan); filter: drop-shadow(0 0 10px rgba(46, 230, 200, 0.6)); }

.nav__word { display: grid; gap: 1px; }
.nav__word b {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  line-height: 1;
}
.nav__word i {
  font-style: normal;
  font-size: 0.55rem;
  letter-spacing: 0.42em;
  color: var(--txt-3);
  line-height: 1;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 2vw, 2.1rem);
  margin-left: auto;
}
.nav__links a {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.45rem 0.1rem;
  font-size: 0.82rem;
  color: var(--txt-2);
  transition: color 0.3s;
}
.nav__links a .mono { font-size: 0.54rem; color: var(--txt-4); transition: color 0.3s; }
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.42s var(--e-out);
}
.nav__links a:hover { color: var(--txt-1); }
.nav__links a:hover::after,
.nav__links a.is-active::after { transform: scaleX(1); }
.nav__links a.is-active { color: var(--white); }
.nav__links a.is-active .mono { color: var(--cyan); }

.nav__actions { display: flex; align-items: center; gap: 0.8rem; }

.nav__burger {
  display: none;
  width: 40px; height: 40px;
  position: relative;
  border: 1px solid var(--line-mid);
}
.nav__burger span {
  position: absolute;
  left: 11px; right: 11px;
  height: 1px;
  background: var(--txt-1);
  transition: transform 0.4s var(--e-out), opacity 0.3s;
}
.nav__burger span:nth-child(1) { top: 17px; }
.nav__burger span:nth-child(2) { top: 23px; }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(3px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { transform: translateY(-3px) rotate(-45deg); }

/* ===================== 抽屉 ===================== */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 55;
  background: rgba(4, 7, 12, 0.96);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  padding: calc(var(--nav-h) + 2rem) var(--gutter) 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  opacity: 0;
  transition: opacity 0.45s var(--e-soft);
}
.drawer.is-open { opacity: 1; }
.drawer[hidden] { display: none; }

.drawer__nav { display: grid; gap: 0.1rem; }
.drawer__nav a {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 0.72rem 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 6.4vw, 2rem);
  letter-spacing: -0.02em;
  transform: translateY(16px);
  opacity: 0;
}
.drawer.is-open .drawer__nav a {
  animation: drawerIn 0.6s var(--e-out) forwards;
  animation-delay: calc(var(--i) * 45ms + 80ms);
}
@keyframes drawerIn { to { transform: none; opacity: 1; } }
.drawer__nav a .mono { font-size: 0.6rem; color: var(--cyan); }

.drawer__foot {
  display: flex;
  justify-content: space-between;
  color: var(--txt-4);
  padding-top: 1.5rem;
  font-size: 0.58rem;
}

/* ===================== 按钮 ===================== */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 1rem 1.6rem;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  overflow: hidden;
  isolation: isolate;
  transition: color 0.35s, border-color 0.35s, background-color 0.35s,
    box-shadow 0.45s, transform 0.35s var(--e-out);
  will-change: transform;
}
.btn svg { width: 15px; height: 15px; flex-shrink: 0; transition: transform 0.4s var(--e-out); }
.btn--sm { padding: 0.62rem 1rem; font-size: 0.74rem; }

/* 主按钮：能量注入 */
.btn--primary {
  color: #02140f;
  background: linear-gradient(100deg, var(--cyan), #6fe0ff);
  font-weight: 500;
  box-shadow: 0 0 0 0 rgba(46, 230, 200, 0);
}
.btn--primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, #fff, var(--cyan) 60%);
  opacity: 0;
  transition: opacity 0.4s;
  z-index: -1;
}
.btn--primary:hover {
  box-shadow: 0 10px 40px -8px rgba(46, 230, 200, 0.55), 0 0 0 1px rgba(46, 230, 200, 0.4);
  transform: translateY(-2px);
}
.btn--primary:hover::before { opacity: 1; }
.btn--primary:hover svg { transform: translateX(3px); }
.btn--primary:active { transform: translateY(0) scale(0.99); }

/* 描边按钮：扫光 */
.btn--line,
.btn--ghost {
  color: var(--txt-1);
  border-color: var(--line-mid);
  background: rgba(255, 255, 255, 0.012);
}
.btn--line::after,
.btn--ghost::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 42%;
  left: -60%;
  background: linear-gradient(90deg, transparent, rgba(46, 230, 200, 0.16), transparent);
  transform: skewX(-18deg);
  transition: left 0.72s var(--e-in-out);
}
.btn--line:hover,
.btn--ghost:hover {
  border-color: rgba(46, 230, 200, 0.55);
  color: var(--white);
}
.btn--line:hover::after,
.btn--ghost:hover::after { left: 118%; }
.btn--line:hover svg { transform: translateX(3px); }

.btn--block { width: 100%; justify-content: space-between; }

.btn[disabled],
.btn.is-disabled {
  opacity: 0.38;
  pointer-events: none;
  filter: grayscale(0.5);
}

/* 加载态 */
.btn.is-loading .btn__label,
.btn.is-loading .btn__arrow { opacity: 0; }
.btn__spinner {
  position: absolute;
  width: 16px; height: 16px;
  border: 1.5px solid rgba(2, 20, 15, 0.25);
  border-top-color: #02140f;
  border-radius: 50%;
  opacity: 0;
  animation: spin 0.8s linear infinite;
}
.btn.is-loading .btn__spinner { opacity: 1; }
@keyframes spin { to { transform: rotate(360deg); } }
.btn__arrow { transition: transform 0.4s var(--e-out), opacity 0.3s; }

/* 成功态 */
.btn.is-success {
  background: linear-gradient(100deg, #7dffd8, var(--cyan));
  color: #02140f;
}

/* 文字链接箭头 */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--txt-2);
  transition: color 0.3s, gap 0.35s var(--e-out);
}
.link-arrow svg { width: 13px; height: 13px; }
.link-arrow:hover { color: var(--cyan); gap: 0.7rem; }

/* ===================== HUD 玻璃面板 ===================== */
.glass {
  background: var(--panel);
  backdrop-filter: blur(16px) saturate(130%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  border: 1px solid var(--line-mid);
}

.hud {
  align-self: end;
  width: min(320px, 100%);
  padding: 1.15rem 1.25rem 1rem;
  background: linear-gradient(160deg, rgba(16, 26, 38, 0.68), rgba(6, 10, 16, 0.42));
  backdrop-filter: blur(20px) saturate(135%);
  -webkit-backdrop-filter: blur(20px) saturate(135%);
  border: 1px solid var(--line-mid);
  position: relative;
  box-shadow: 0 30px 80px -40px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
/* 角标 */
.hud::before,
.hud::after {
  content: "";
  position: absolute;
  width: 9px; height: 9px;
  border: 1px solid rgba(46, 230, 200, 0.75);
}
.hud::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.hud::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.hud__hd {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
  color: var(--txt-3);
  font-size: 0.58rem;
}
.hud__live { display: flex; align-items: center; gap: 0.38rem; color: var(--cyan); font-size: 0.54rem; }
.hud__live i {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  animation: pulse 1.9s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.35; transform: scale(0.72); } }

.hud__rows { display: grid; gap: 0.34rem; padding: 0.85rem 0; font-size: 0.6rem; }
.hud__rows > div { display: flex; align-items: baseline; gap: 0.55rem; }
.hud__rows span { color: var(--txt-4); width: 6.4em; flex-shrink: 0; letter-spacing: 0.1em; white-space: nowrap; }
.hud__rows b { color: var(--txt-1); font-weight: 400; letter-spacing: 0.06em; }
.hud__rows em { font-style: normal; color: var(--cyan); font-size: 0.52rem; letter-spacing: 0.1em; }

.hud__bars { display: flex; gap: 3px; height: 22px; align-items: flex-end; padding-bottom: 0.7rem; }
.hud__bars i {
  flex: 1;
  height: var(--v);
  background: linear-gradient(180deg, rgba(46, 230, 200, 0.75), rgba(61, 123, 255, 0.12));
  transform-origin: bottom;
  animation: barRise 1.4s var(--e-out) both;
}
.hud__bars i:nth-child(2n) { animation-delay: 0.12s; }
@keyframes barRise { from { transform: scaleY(0.05); opacity: 0; } }

.hud__ft {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 0.65rem;
  font-size: 0.55rem;
  color: var(--txt-4);
}
.hud__ft b { color: var(--cyan); font-weight: 400; }

/* ===================== 跑马灯 ===================== */
.ticker {
  display: flex;
  gap: 1.6rem;
  white-space: nowrap;
  animation: tickerMove 42s linear infinite;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--txt-4);
  text-transform: uppercase;
}
.ticker span:nth-child(even) { color: var(--cyan-dim); }
@keyframes tickerMove { to { transform: translateX(-50%); } }

/* ===================== 表单 ===================== */
.form { display: grid; gap: 1.15rem; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.15rem; }

.field { display: grid; gap: 0.45rem; position: relative; }
.field label {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.76rem;
  color: var(--txt-2);
  letter-spacing: 0.04em;
}
.field label .mono { font-size: 0.52rem; color: var(--txt-4); }

.field input,
.field select,
.field textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.018);
  border: 1px solid var(--line);
  padding: 0.85rem 0.95rem;
  color: var(--txt-1);
  font-size: 0.86rem;
  transition: border-color 0.3s, background-color 0.3s, box-shadow 0.4s;
  outline: none;
  resize: vertical;
  appearance: none;
}
.field textarea { line-height: 1.7; min-height: 112px; }

.field input::placeholder,
.field textarea::placeholder { color: var(--txt-4); }

.field input:hover,
.field textarea:hover,
.field select:hover { border-color: var(--line-mid); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(46, 230, 200, 0.6);
  background: rgba(46, 230, 200, 0.03);
  box-shadow: 0 0 0 3px rgba(46, 230, 200, 0.08);
}

/* 状态：错误 / 有效 */
.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea {
  border-color: rgba(255, 94, 108, 0.65);
  background: rgba(255, 94, 108, 0.04);
}
.field.is-valid input,
.field.is-valid select,
.field.is-valid textarea { border-color: rgba(46, 230, 200, 0.32); }

.field__err {
  font-size: 0.62rem;
  color: var(--red);
  min-height: 1em;
  opacity: 0;
  transform: translateY(-3px);
  transition: opacity 0.25s, transform 0.25s;
  letter-spacing: 0.08em;
}
.field.is-invalid .field__err { opacity: 1; transform: none; }

.select-wrap { position: relative; }
.select-wrap select { padding-right: 2.4rem; cursor: pointer; }
.select-wrap > svg {
  position: absolute;
  right: 0.95rem;
  top: 50%;
  transform: translateY(-50%);
  width: 13px; height: 13px;
  color: var(--txt-3);
  pointer-events: none;
}
.select-wrap select option { background: #0a111a; color: var(--txt-1); }

.form__status {
  font-size: 0.6rem;
  color: var(--cyan);
  min-height: 1.2em;
  letter-spacing: 0.12em;
}
.form__status.is-error { color: var(--red); }
.form__legal { font-size: 0.52rem; color: var(--txt-4); letter-spacing: 0.1em; line-height: 1.7; }

/* ===================== 折叠面板 ===================== */
.qa { border-top: 1px solid var(--line); }
.qa:last-child { border-bottom: 1px solid var(--line); }

.qa h3 { font-size: inherit; font-weight: 400; }
.qa button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.45rem 0;
  text-align: left;
  font-size: clamp(0.98rem, 1.25vw, 1.15rem);
  color: var(--txt-1);
  transition: color 0.3s;
}
.qa button:hover { color: var(--cyan); }

.qa__sign {
  position: relative;
  width: 14px; height: 14px;
  flex-shrink: 0;
}
.qa__sign::before,
.qa__sign::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform 0.45s var(--e-out), opacity 0.3s;
}
.qa__sign::before { top: 50%; left: 0; width: 14px; height: 1px; transform: translateY(-50%); }
.qa__sign::after { left: 50%; top: 0; height: 14px; width: 1px; transform: translateX(-50%); }
.qa button[aria-expanded="true"] .qa__sign::after { transform: translateX(-50%) rotate(90deg); opacity: 0; }

.qa__body {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.55s var(--e-in-out), opacity 0.4s, padding 0.4s;
}
.qa__body[hidden] { display: block; }
.qa__body.is-open { max-height: 420px; opacity: 1; padding-bottom: 1.4rem; }
.qa__body p { color: var(--txt-2); font-size: 0.92rem; line-height: 1.9; max-width: 68ch; }

/* ===================== 标签 / 数据条 ===================== */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.1rem;
}
.tag-list li {
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--line);
  color: var(--txt-2);
  font-size: 0.56rem;
  letter-spacing: 0.09em;
  text-transform: none;
  background: rgba(255, 255, 255, 0.015);
}

.bar-set { display: grid; gap: 0.55rem; margin-top: 1.4rem; }
.bar { display: grid; grid-template-columns: 3.6em 1fr; align-items: center; gap: 0.7rem; }
.bar span { font-family: var(--font-mono); font-size: 0.56rem; letter-spacing: 0.1em; color: var(--txt-3); }
.bar i {
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(61, 123, 255, 0.35));
  width: var(--v);
  position: relative;
  transform-origin: left;
  animation: barGrow 1.5s var(--e-out) both;
}
.bar i::after {
  content: "";
  position: absolute;
  right: 0; top: -2px;
  width: 2px; height: 6px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}
@keyframes barGrow { from { transform: scaleX(0); } }

/* ===================== 响应式 ===================== */
@media (max-width: 1080px) {
  .nav__links { display: none; }
  .nav__burger { display: block; }
  .nav__actions .btn { display: none; }
}

@media (max-width: 720px) {
  .form__row { grid-template-columns: 1fr; }
  .hud { width: 100%; }
  .sec-head__meta { display: none; }
  .sec-intro--split { grid-template-columns: 1fr; }
  .sec-intro--split .lede { justify-self: start; }
}