/* ==========================================================================
   NeoLinks 官网 · 组件
   按钮、标签、玻璃容器、真机框、功能区块、数据条、下载面板、FAQ、弹窗。
   ========================================================================== */

/* ---------- 按钮 ---------- */

.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 54px;
  padding: 0 26px;
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  font-weight: 620;
  letter-spacing: -.01em;
  white-space: nowrap;
  isolation: isolate;
  overflow: hidden;
  transition:
    transform var(--dur-2) var(--ease-spring),
    background var(--dur-2) var(--ease-out),
    box-shadow var(--dur-2) var(--ease-out),
    color var(--dur-2) var(--ease-out);
}

.button:active {
  transform: scale(.985);
}

/* 掠光：hover 时一道柔光从左扫到右 */
.button::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(105deg, transparent 30%, rgba(255, 255, 255, .34) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .85s var(--ease-out);
}

.button:hover::after {
  transform: translateX(120%);
}

.button-primary {
  background: var(--cta-bg);
  color: var(--cta-ink);
  box-shadow: var(--cta-shadow);
}

.button-primary:hover {
  background: var(--cta-bg-hover);
  transform: translateY(-2px);
}

.button-glass {
  background: var(--glass-bg-strong);
  color: var(--ink);
  border: 1px solid var(--line-glass);
  box-shadow: var(--shadow-sm);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
}

.button-glass:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.button-light {
  background: #ffffff;
  color: #0f2736;
  box-shadow: 0 18px 40px -20px rgba(0, 0, 0, .6);
}

.button-light:hover {
  transform: translateY(-2px);
}

.button .icon {
  transition: transform var(--dur-2) var(--ease-out);
}

.button:hover .icon {
  transform: translate(2px, -2px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-sm);
  font-weight: 560;
  color: var(--muted);
  padding: 6px 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-1) var(--ease-out), border-color var(--dur-1) var(--ease-out);
}

.text-link:hover {
  color: var(--ink);
  border-color: var(--line-strong);
}

.text-link span {
  transition: transform var(--dur-2) var(--ease-out);
}

.text-link:hover span {
  transform: translateY(3px);
}

/* ---------- 标签与徽章 ---------- */

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: var(--sp-5);
}

.tag {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  font-size: var(--fs-xs);
  color: var(--muted);
  letter-spacing: .01em;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 15px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-glass);
  background: var(--glass-bg);
  box-shadow: var(--shadow-sm);
  -webkit-backdrop-filter: blur(16px) saturate(var(--glass-saturate));
  backdrop-filter: blur(16px) saturate(var(--glass-saturate));
  font-size: var(--fs-xs);
  font-weight: 560;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ---------- 玻璃容器 ---------- */

.glass {
  border-radius: var(--r-card);
  background: var(--glass-bg);
  border: 1px solid var(--line-glass);
  box-shadow: var(--shadow-md);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
}

/* 鼠标跟随的柔光（--mx/--my 由脚本写入） */
.tilt {
  position: relative;
  transform-style: preserve-3d;
  transition: transform .5s var(--ease-out), box-shadow .5s var(--ease-out);
  will-change: transform;
}

.tilt::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(
    320px circle at var(--mx, 50%) var(--my, 50%),
    rgba(255, 255, 255, .55),
    transparent 62%
  );
  transition: opacity var(--dur-3) var(--ease-out);
  z-index: 2;
}

@media (hover: hover) {
  .tilt:hover::before {
    opacity: 1;
  }
}

/* ---------- 真机框 ---------- */

.device {
  position: relative;
  margin: 0;
  padding: 9px;
  border-radius: 42px;
  background: linear-gradient(158deg, #33454f 0%, #16242e 38%, #0a141b 100%);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, .14),
    inset 0 1px 0 rgba(255, 255, 255, .3),
    var(--shadow-phone);
  overflow: hidden;
  isolation: isolate;
}

.device::before {
  /* 玻璃反光 */
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background: linear-gradient(128deg, rgba(255, 255, 255, .18) 0%, rgba(255, 255, 255, 0) 34%, rgba(255, 255, 255, 0) 72%, rgba(255, 255, 255, .08) 100%);
  mix-blend-mode: screen;
}

.device img {
  width: 100%;
  height: auto;
  border-radius: 34px;
  background: #0b1620;
}

.device-caption {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  z-index: 4;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  background: rgba(10, 20, 27, .55);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  color: rgba(255, 255, 255, .84);
  font-size: .7rem;
  letter-spacing: .04em;
  white-space: nowrap;
}

/* ---------- 截图卡（局部界面） ---------- */

.shot {
  position: relative;
  margin: 0;
  border-radius: var(--r-card);
  background: var(--glass-bg-strong);
  border: 1px solid var(--line-glass);
  box-shadow: var(--shadow-lg);
  -webkit-backdrop-filter: blur(20px) saturate(var(--glass-saturate));
  backdrop-filter: blur(20px) saturate(var(--glass-saturate));
  overflow: hidden;
}

.shot img {
  width: 100%;
  display: block;
}

.shot-caption {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: var(--sp-4);
  font-size: var(--fs-xs);
  color: var(--muted-soft);
  letter-spacing: .02em;
}

.shot-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--sky);
  flex: none;
}

/* 两图并排 */
.shot-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
  align-items: stretch;
}

/* 两张截图比例不同：拉伸卡片让底边齐平，画面在卡片内垂直居中 */
.shot-duo .shot {
  display: grid;
  place-items: center;
}

.shot-duo .shot img {
  width: 100%;
}

/* ---------- 数据条 ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-block: 1px solid var(--line);
}

.stat {
  padding: clamp(24px, 3.4vw, 40px) var(--sp-4);
  border-left: 1px solid var(--line);
}

.stat:first-child {
  border-left: 0;
  padding-left: 0;
}

.stat-value {
  display: flex;
  align-items: baseline;
  gap: 3px;
  font-size: clamp(2rem, 3.4vw, 2.9rem);
  font-weight: 760;
  letter-spacing: -.045em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  background-image: var(--grad-brand);
  background-size: 320% 100%;
  background-position: 0% 50%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 四个数字各取自品牌渐变的不同位置：蓝 → 青 → 绿 → 金 */
.stat:nth-child(1) .stat-value { background-position: 0% 50%; }
.stat:nth-child(2) .stat-value { background-position: 34% 50%; }
.stat:nth-child(3) .stat-value { background-position: 66% 50%; }
.stat:nth-child(4) .stat-value { background-position: 100% 50%; }

.stat-value small {
  font-size: .46em;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--muted);
  -webkit-text-fill-color: var(--muted);
}

.stat-label {
  margin-top: 10px;
  font-size: var(--fs-xs);
  color: var(--muted-soft);
  letter-spacing: .02em;
}

@media (max-width: 760px) {
  .stats {
    grid-template-columns: 1fr 1fr;
  }

  .stat {
    padding-inline: var(--sp-4);
  }

  .stat:nth-child(odd) {
    border-left: 0;
    padding-left: 0;
  }

  .stat:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }
}

/* ---------- 能力跑马灯 ---------- */

.marquee {
  position: relative;
  overflow: hidden;
  padding-block: var(--sp-5);
  border-block: 1px solid var(--line);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee-track {
  display: flex;
  width: max-content;
  gap: clamp(28px, 4vw, 64px);
  animation: marquee 42s linear infinite;
}

.marquee:hover .marquee-track {
  animation-play-state: paused;
}

.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: clamp(28px, 4vw, 64px);
  font-size: clamp(.95rem, 1.4vw, 1.15rem);
  font-weight: 560;
  letter-spacing: -.01em;
  color: var(--muted);
  white-space: nowrap;
}

.marquee-item::after {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--line-strong);
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 功能区块 ---------- */

.feature {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  gap: clamp(28px, 5vw, 84px);
  align-items: center;
  padding-block: clamp(36px, 4.6vw, 68px);
}

.feature.is-reverse {
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
}

.feature.is-reverse .feature-media {
  order: -1;
}

.feature-copy h3 {
  font-size: clamp(1.55rem, 2.4vw, 2.15rem);
  line-height: 1.16;
  letter-spacing: -.028em;
  margin-bottom: var(--sp-4);
}

.feature-copy p {
  color: var(--muted);
  max-width: 46ch;
  line-height: 1.78;
}

.feature-media {
  position: relative;
  max-width: 560px;
}

.feature-media .shot {
  max-width: 470px;
}

.shot-duo .shot {
  max-width: none;
}

@media (max-width: 900px) {
  .feature,
  .feature.is-reverse {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }

  .feature.is-reverse .feature-media {
    order: 0;
  }
}

/* ---------- 下载面板 ---------- */

.download-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: clamp(32px, 5vw, 72px);
  border-radius: var(--r-sheet);
  background: var(--panel-bg);
  color: var(--panel-ink);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  isolation: isolate;
}

/* 面板内的极光与网格 */
.download-panel::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto;
  height: 120%;
  z-index: -1;
  background:
    radial-gradient(40% 55% at 18% 12%, rgba(111, 183, 228, .38), transparent 62%),
    radial-gradient(38% 50% at 82% 22%, rgba(168, 201, 141, .22), transparent 66%);
  filter: blur(12px);
}

.download-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(80% 80% at 50% 0%, #000, transparent 78%);
  mask-image: radial-gradient(80% 80% at 50% 0%, #000, transparent 78%);
}

.download-panel h2 {
  color: var(--panel-ink);
}

.download-panel .eyebrow {
  color: var(--panel-muted);
  margin-bottom: var(--sp-4);
}

.download-panel p {
  color: color-mix(in srgb, var(--panel-ink) 78%, transparent);
  max-width: 46ch;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
  margin-top: var(--sp-7);
}

.download-note {
  margin-top: var(--sp-4);
  max-width: 44ch;
  font-size: var(--fs-xs);
  color: color-mix(in srgb, var(--panel-muted) 94%, transparent);
}

.copy-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 54px;
  padding: 0 20px;
  border-radius: var(--r-pill);
  border: 1px solid var(--panel-line);
  background: var(--panel-chip);
  color: var(--panel-ink);
  font-size: var(--fs-sm);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  transition: background var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-spring);
}

.copy-button:hover {
  background: rgba(255, 255, 255, .18);
  transform: translateY(-2px);
}

.copy-button strong {
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: .16em;
  font-weight: 600;
}

.qr-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-5);
  border-radius: var(--r-dialog);
  border: 1px solid var(--panel-line);
  background: rgba(255, 255, 255, .08);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  text-align: center;
}

.qr-card img {
  width: 168px;
  height: 168px;
  border-radius: var(--r-tile);
  background: #fff;
  padding: 8px;
}

.qr-card p {
  font-size: var(--fs-sm);
  color: var(--panel-ink);
}

.qr-card span {
  font-size: var(--fs-xs);
  color: var(--panel-muted);
}

.qr-card b {
  font-family: var(--font-mono);
  letter-spacing: .12em;
  color: var(--panel-ink);
}

.note {
  display: block;
  min-height: 22px;
  margin-top: var(--sp-3);
  font-size: var(--fs-xs);
  color: var(--panel-muted);
}

.note.is-ok {
  color: #b9e2a0;
}

@media (max-width: 820px) {
  .download-panel {
    grid-template-columns: 1fr;
  }

  .qr-card {
    justify-self: start;
    flex-direction: row;
    text-align: left;
    gap: var(--sp-4);
  }

  .qr-card img {
    width: 112px;
    height: 112px;
  }
}

/* ---------- FAQ ---------- */

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  padding: clamp(20px, 2.4vw, 28px) 0;
  cursor: pointer;
  font-size: clamp(1rem, 1.3vw, 1.12rem);
  font-weight: 600;
  letter-spacing: -.015em;
  list-style: none;
  transition: color var(--dur-1) var(--ease-out);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  color: var(--accent);
}

.faq-item summary::after {
  content: "";
  flex: none;
  width: 12px;
  height: 12px;
  margin-right: 6px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  opacity: .45;
  transition: transform var(--dur-2) var(--ease-out), opacity var(--dur-2) var(--ease-out);
}

.faq-item[open] summary::after {
  transform: rotate(-135deg) translateY(-2px);
  opacity: .8;
}

.faq-item p {
  max-width: 68ch;
  padding-bottom: clamp(20px, 2.4vw, 28px);
  color: var(--muted);
  line-height: 1.82;
  animation: faqOpen .45s var(--ease-out);
}

.faq-item p a {
  color: var(--accent);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 32%, transparent);
}

@keyframes faqOpen {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 提示弹窗 ---------- */

.dialog {
  position: fixed;
  inset: 0;
  z-index: var(--z-dialog);
  display: grid;
  place-items: center;
  padding: var(--gutter);
}

.dialog[hidden] {
  display: none;
}

.dialog-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 18, 26, .38);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  animation: dialogFade .3s var(--ease-out);
}

.dialog-panel {
  position: relative;
  width: min(440px, 100%);
  padding: clamp(26px, 4vw, 34px);
  border-radius: var(--r-sheet);
  background: var(--glass-bg-strong);
  border: 1px solid var(--line-glass);
  box-shadow: var(--shadow-lg);
  -webkit-backdrop-filter: blur(30px) saturate(var(--glass-saturate));
  backdrop-filter: blur(30px) saturate(var(--glass-saturate));
  animation: dialogRise .45s var(--ease-out);
}

.dialog-panel h2 {
  font-size: 1.4rem;
  line-height: 1.25;
  letter-spacing: -.02em;
  margin-bottom: var(--sp-3);
}

.dialog-panel > p {
  color: var(--muted);
  font-size: var(--fs-sm);
  line-height: 1.72;
}

.dialog-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--muted);
  font-size: 1.2rem;
  transition: background var(--dur-1) var(--ease-out), color var(--dur-1) var(--ease-out);
}

.dialog-close:hover {
  background: color-mix(in srgb, var(--ink) 7%, transparent);
  color: var(--ink);
}

.code-box {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-top: var(--sp-5);
  padding: 12px 12px 12px 20px;
  border-radius: var(--r-panel);
  border: 1px solid var(--line);
  background: var(--surface);
}

.code-value {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  letter-spacing: .28em;
  color: var(--ink);
}

.dialog-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-top: var(--sp-5);
}

.dialog-status {
  margin-top: var(--sp-3);
  font-size: var(--fs-xs);
  color: var(--muted);
}

body.has-dialog {
  overflow: hidden;
}

@keyframes dialogFade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes dialogRise {
  from { opacity: 0; transform: translateY(14px) scale(.97); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .dialog-backdrop,
  .dialog-panel {
    animation: none;
  }
}