/* ==========================================================================
   个人软件信息分析站 · ICP 备案信息展示
   设计语言：shadcn 风格 —— Token 化色彩 / 细边框 / 玻璃卡片 / 克制动效
   ========================================================================== */

/* ---------- 设计 Token ---------- */
:root {
  --radius: 16px;
  --radius-sm: 10px;
  --font-display: "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --nav-h: 68px;
}

/* 深色主题（默认） */
body[data-theme="dark"] {
  --background: #060a13;
  --surface: rgba(15, 24, 42, 0.55);
  --surface-solid: #0b1220;
  --card: rgba(13, 21, 37, 0.72);
  --card-hover: rgba(17, 28, 48, 0.85);
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.28);
  --text-1: #e8eef7;
  --text-2: #9aa7bc;
  --text-3: #64748b;
  --accent: #2dd4bf;
  --accent-2: #38bdf8;
  --accent-soft: rgba(45, 212, 191, 0.12);
  --amber: #fbbf24;
  --shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.65);
  --glow: rgba(45, 212, 191, 0.16);
  --aurora-opacity: 0.55;
  --noise-opacity: 0.05;
  color-scheme: dark;
}

/* 浅色主题 */
body[data-theme="light"] {
  --background: #f4f6fb;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-solid: #ffffff;
  --card: rgba(255, 255, 255, 0.85);
  --card-hover: #ffffff;
  --border: rgba(15, 23, 42, 0.1);
  --border-strong: rgba(15, 23, 42, 0.18);
  --text-1: #0f172a;
  --text-2: #4a5a72;
  --text-3: #93a1b5;
  --accent: #0d9488;
  --accent-2: #0284c7;
  --accent-soft: rgba(13, 148, 136, 0.09);
  --amber: #d97706;
  --shadow: 0 24px 60px -28px rgba(30, 50, 90, 0.28);
  --glow: rgba(13, 148, 136, 0.12);
  --aurora-opacity: 0.3;
  --noise-opacity: 0.02;
  color-scheme: light;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  font-family: var(--font-body);
  background: var(--background);
  color: var(--text-1);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color 0.5s ease, color 0.5s ease;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

img,
svg {
  display: block;
}

::selection {
  background: var(--accent);
  color: #fff;
}

/* ---------- 背景装饰 ---------- */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.aurora {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: var(--aurora-opacity);
  will-change: transform;
}

.aurora--1 {
  width: 56vw;
  height: 56vw;
  top: -18vw;
  right: -12vw;
  background: radial-gradient(circle at 30% 30%, var(--glow), transparent 62%);
  animation: drift-a 26s var(--ease-out) infinite alternate;
  translate: calc(var(--mx, 0) * 28px) calc(var(--my, 0) * 28px);
}

.aurora--2 {
  width: 48vw;
  height: 48vw;
  bottom: -16vw;
  left: -10vw;
  background: radial-gradient(circle at 60% 60%, rgba(56, 189, 248, 0.14), transparent 62%);
  animation: drift-b 32s var(--ease-out) infinite alternate;
  translate: calc(var(--mx, 0) * -20px) calc(var(--my, 0) * -20px);
}

body[data-theme="dark"] .aurora--1 {
  background: radial-gradient(circle at 30% 30%, var(--glow), transparent 62%);
}

body[data-theme="light"] .aurora--1 {
  background: radial-gradient(circle at 30% 30%, rgba(13, 148, 136, 0.16), transparent 62%);
}

body[data-theme="light"] .aurora--2 {
  background: radial-gradient(circle at 60% 60%, rgba(2, 132, 199, 0.14), transparent 62%);
}

@keyframes drift-a {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(-6vw, 6vh) scale(1.12); }
}

@keyframes drift-b {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(7vw, -5vh) scale(1.15); }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 0%, transparent 75%);
}

.noise {
  position: absolute;
  inset: 0;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* ---------- 导航栏 ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 clamp(20px, 5vw, 56px);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s ease, background-color 0.4s ease;
}

.nav.scrolled {
  background: var(--surface);
  border-bottom-color: var(--border);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.nav__logo {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 20px -8px var(--glow);
}

.nav__logo svg {
  width: 21px;
  height: 21px;
}

.nav__name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav__links {
  display: flex;
  gap: 28px;
}

.nav__links a {
  position: relative;
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.3s ease;
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
}

.nav__links a:hover {
  color: var(--text-1);
}

.nav__links a:hover::after {
  transform: scaleX(1);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav__beian {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  padding: 7px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--accent-soft);
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.nav__beian:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -10px var(--glow);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.dot--pulse {
  box-shadow: 0 0 0 0 var(--accent-soft);
  animation: pulse-dot 2.4s ease-out infinite;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 var(--accent-soft); }
  70% { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.theme-toggle {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  color: var(--text-2);
  transition: color 0.3s ease, border-color 0.3s ease, transform 0.4s var(--ease-out);
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: rotate(18deg);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

body[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

body[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

/* ---------- 滚动进场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 0.9s var(--ease-out),
    transform 0.9s var(--ease-out);
  transition-delay: calc(var(--reveal-delay, 0) * 120ms);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 40px) 24px 80px;
  position: relative;
}

.hero__inner {
  width: min(880px, 100%);
  text-align: center;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent);
  padding: 8px 16px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero__eyebrow svg {
  width: 15px;
  height: 15px;
}

.hero__title {
  margin-top: 28px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 6vw, 4.2rem);
  line-height: 1.18;
  letter-spacing: 0.02em;
  background: linear-gradient(120deg, var(--text-1) 30%, var(--accent) 110%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__sub {
  margin: 20px auto 0;
  max-width: 620px;
  font-size: clamp(0.95rem, 1.6vw, 1.08rem);
  font-weight: 300;
  color: var(--text-2);
}

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  font-size: 13.5px;
  color: var(--text-2);
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px dashed var(--border-strong);
  background: var(--surface);
}

.hero__status strong {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 700;
}

.hero__status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: blink 2.6s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero__status-sep {
  width: 1px;
  height: 12px;
  background: var(--border-strong);
  margin: 0 2px;
}

.hero__chips {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.hero__chip {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: color 0.3s ease, border-color 0.3s ease, transform 0.3s var(--ease-out);
}

.hero__chip:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- 备案凭证卡 ---------- */
.hero-card {
  position: relative;
  margin-top: 44px;
  text-align: left;
  border-radius: var(--radius);
  padding: clamp(20px, 3.4vw, 30px);
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

/* 渐变描边 */
.hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--accent), transparent 40%, transparent 60%, var(--accent-2));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

.hero-card__shine {
  position: absolute;
  top: -60%;
  left: -20%;
  width: 55%;
  height: 220%;
  background: linear-gradient(105deg, transparent 42%, rgba(255, 255, 255, 0.07) 50%, transparent 58%);
  transform: rotate(8deg);
  animation: shine-sweep 6.5s ease-in-out infinite;
  pointer-events: none;
}

body[data-theme="light"] .hero-card__shine {
  background: linear-gradient(105deg, transparent 42%, rgba(255, 255, 255, 0.55) 50%, transparent 58%);
}

@keyframes shine-sweep {
  0%, 55% { transform: rotate(8deg) translateX(-160%); }
  85%, 100% { transform: rotate(8deg) translateX(320%); }
}

.hero-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.hero-card__label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--text-3);
  text-transform: uppercase;
}

.hero-card__stamp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  padding: 5px 11px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent-soft);
}

.hero-card__stamp svg {
  width: 13px;
  height: 13px;
}

.hero-card__icp {
  margin-top: 22px;
}

.hero-card__icp-label {
  display: block;
  font-size: 12.5px;
  color: var(--text-3);
  margin-bottom: 8px;
  letter-spacing: 0.08em;
}

.hero-card__icp-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-card__icp-number {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.25rem, 3.2vw, 1.9rem);
  letter-spacing: 0.02em;
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-card__copy {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  transition: all 0.3s ease;
}

.hero-card__copy svg {
  width: 15px;
  height: 15px;
}

.hero-card__copy:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-1px);
}

.hero-card__copy.copied {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.hero-card__fields {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface);
}

.hero-card__field {
  padding: 16px 18px;
  border-right: 1px solid var(--border);
}

.hero-card__field:last-child {
  border-right: none;
}

.hero-card__field-key {
  display: block;
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 6px;
  letter-spacing: 0.06em;
}

.hero-card__field-val {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-1);
  word-break: break-all;
}

.hero-card__foot {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  transition: color 0.3s ease, gap 0.3s ease;
}

.hero-card__foot svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s var(--ease-out);
}

.hero-card__foot:hover {
  color: var(--accent);
  gap: 12px;
}

.hero-card__foot:hover svg {
  transform: translate(2px, -2px);
}

.hero__scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-3);
  animation: bob 2.2s ease-in-out infinite;
  transition: color 0.3s ease;
}

.hero__scroll:hover {
  color: var(--accent);
}

.hero__scroll svg {
  width: 22px;
  height: 22px;
}

@keyframes bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ---------- 通用 Section ---------- */
.section {
  width: min(1180px, 100% - 48px);
  margin: 0 auto;
  padding: 70px 0 40px;
}

.section__head {
  text-align: center;
  margin-bottom: 44px;
}

.section__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--accent);
  text-transform: uppercase;
}

.section__title {
  margin-top: 12px;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  font-weight: 700;
}

.section__desc {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--text-2);
}

/* ---------- 备案详情卡片 ---------- */
.details__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.detail-card {
  position: relative;
  padding: 22px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.45s var(--ease-out), border-color 0.45s ease, background-color 0.45s ease, box-shadow 0.45s ease;
  overflow: hidden;
}

.detail-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(140% 80% at 50% 0%, var(--glow), transparent 60%);
  opacity: 0;
  transition: opacity 0.45s ease;
  pointer-events: none;
}

.detail-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  background: var(--card-hover);
  box-shadow: var(--shadow);
}

.detail-card:hover::after {
  opacity: 1;
}

.detail-card__icon {
  position: relative;
  z-index: 1;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  margin-bottom: 16px;
  transition: transform 0.45s var(--ease-out);
}

.detail-card:hover .detail-card__icon {
  transform: scale(1.08) rotate(-4deg);
}

.detail-card__icon svg {
  width: 20px;
  height: 20px;
}

.detail-card__body {
  position: relative;
  z-index: 1;
}

.detail-card__label {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin-bottom: 8px;
}

.detail-card__value {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--text-1);
  word-break: break-all;
}

.detail-card__value-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.detail-card__value-row .detail-card__value {
  flex: 1;
  min-width: 0;
}

.detail-card__copy {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: 8px;
  color: var(--text-3);
  border: 1px solid var(--border-strong);
  transition: color 0.3s ease, border-color 0.3s ease, background-color 0.3s ease, transform 0.3s ease;
}

.detail-card__copy svg {
  width: 14px;
  height: 14px;
}

.detail-card__copy:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-1px);
}

.detail-card__copy.copied {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.detail-card__hint {
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--text-3);
}

.detail-card__hint strong {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 700;
}

/* ---------- 核验指引 ---------- */
.verify {
  padding-top: 40px;
}

.verify__panel {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(24px, 4vw, 40px);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 100% at 0% 0%, var(--accent-soft), transparent 45%),
    var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.verify__icon {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
}

.verify__icon svg {
  width: 30px;
  height: 30px;
}

.verify__title {
  margin-top: 8px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.6vw, 1.75rem);
  font-weight: 700;
}

.verify__desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-2);
  max-width: 560px;
}

.verify__steps {
  list-style: none;
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.verify__steps li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13.5px;
  color: var(--text-2);
}

.verify__steps li span {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 2px 7px;
  flex-shrink: 0;
}

.verify__steps code {
  font-size: 12px;
  color: var(--text-1);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 8px;
}

.verify__action {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  font-weight: 700;
  color: #fff;
  padding: 14px 24px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 14px 30px -12px var(--glow);
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s ease;
  white-space: nowrap;
}

.verify__action svg {
  width: 16px;
  height: 16px;
  transition: transform 0.35s var(--ease-out);
}

.verify__action:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -14px var(--glow);
}

.verify__action:hover svg {
  transform: translate(3px, -3px);
}

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 40px;
  padding: 26px 0;
}

.footer__inner {
  width: min(1180px, 100% - 48px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-3);
}

.footer__beian {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer__beian svg {
  width: 14px;
  height: 14px;
  color: var(--accent);
}

.footer__beian:hover {
  color: var(--accent);
}

/* ---------- 备案信息弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 20px;
}

.modal[hidden] {
  display: none;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(4, 8, 16, 0.62);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.modal.open .modal__overlay {
  opacity: 1;
}

.modal__dialog {
  position: relative;
  width: min(520px, 100%);
  max-height: min(88vh, 720px);
  overflow-y: auto;
  border-radius: var(--radius);
  background: var(--surface-solid);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow);
  padding: 30px 30px 26px;
  opacity: 0;
  transform: translateY(20px) scale(0.96);
  transition: opacity 0.35s ease, transform 0.45s var(--ease-out);
}

.modal.open .modal__dialog {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: var(--text-3);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: color 0.3s ease, border-color 0.3s ease, background-color 0.3s ease, transform 0.3s var(--ease-out);
}

.modal__close svg {
  width: 17px;
  height: 17px;
}

.modal__close:hover {
  color: var(--text-1);
  border-color: var(--border-strong);
  background: var(--surface);
  transform: rotate(90deg);
}

.news-modal {
  width: min(680px, 100%);
}

.news-modal__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.news-modal__title {
  margin-top: 14px;
  font-size: clamp(20px, 3vw, 24px);
  font-weight: 900;
  line-height: 1.45;
  color: var(--text-1);
}

.news-modal__summary {
  margin-top: 12px;
  font-size: 14.5px;
  color: var(--text-2);
  line-height: 1.8;
}

.news-modal__section {
  margin-top: 22px;
}

.news-modal__subtitle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.news-modal__subtitle::before {
  content: "";
  width: 14px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.news-modal__points {
  margin-top: 12px;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.news-modal__points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-1);
  line-height: 1.7;
}

.news-modal__points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.news-modal__body p {
  margin-top: 10px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.85;
}

.news-modal__source {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 13px 20px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: border-color 0.3s ease, transform 0.3s var(--ease-out);
}

.news-modal__source svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s var(--ease-out);
}

.news-modal__source:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.news-modal__source:hover svg {
  transform: translate(3px, -3px);
}

.news-modal__source:not([href]) {
  opacity: 0.7;
  cursor: default;
  border-style: dashed;
}

.news-modal__source:not([href]):hover {
  transform: none;
  border-color: var(--border-strong);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translate(-50%, 20px);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-1);
  background: var(--surface-solid);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 12px 22px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease, transform 0.4s var(--ease-out);
  z-index: 100;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast svg {
  width: 17px;
  height: 17px;
  color: var(--accent);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .details__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-card__fields {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-card__field:nth-child(2) {
    border-right: none;
  }

  .hero-card__field:nth-child(1),
  .hero-card__field:nth-child(2) {
    border-bottom: 1px solid var(--border);
  }
}

@media (max-width: 860px) {
  .nav__links {
    display: none;
  }

  .verify__panel {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .verify__action {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  :root {
    --nav-h: 60px;
  }

  .nav {
    padding: 0 18px;
  }

  .nav__beian span:last-child {
    display: none;
  }

  .nav__beian {
    padding: 7px 10px;
  }

  .hero {
    padding-top: calc(var(--nav-h) + 30px);
  }

  .details__grid {
    grid-template-columns: 1fr;
  }

  .hero-card__fields {
    grid-template-columns: 1fr;
  }

  .hero-card__field,
  .hero-card__field:nth-child(2) {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .hero-card__field:last-child {
    border-bottom: none;
  }

  .footer__inner {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 10px;
  }

  .modal__list {
    grid-template-columns: 1fr;
  }
}

/* ---------- 站点简介 ---------- */
.about {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(36px, 5vw, 60px);
  align-items: start;
}

.about__text {
  margin-top: 18px;
  font-size: 15px;
  color: var(--text-2);
  max-width: 480px;
  font-weight: 300;
}

.about__more {
  margin-top: 26px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

.about__more svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s var(--ease-out);
}

.about__more:hover svg {
  transform: translateX(5px);
}

.about__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about__item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 20px 22px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.45s var(--ease-out), border-color 0.45s ease;
}

.about__item:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}

.about__item-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
}

.about__item-icon svg {
  width: 19px;
  height: 19px;
}

.about__item h3 {
  font-size: 15px;
  font-weight: 700;
}

.about__item p {
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--text-2);
}

/* ---------- 分析领域 ---------- */
.fields__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.field-card {
  position: relative;
  padding: 26px 22px 24px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  overflow: hidden;
  transition: transform 0.45s var(--ease-out), border-color 0.45s ease, box-shadow 0.45s ease;
}

.field-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity 0.45s ease;
}

.field-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

.field-card:hover::before {
  opacity: 1;
}

.field-card__icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  transition: transform 0.45s var(--ease-out);
}

.field-card:hover .field-card__icon {
  transform: scale(1.08) rotate(-4deg);
}

.field-card__icon svg {
  width: 22px;
  height: 22px;
}

.field-card__title {
  margin-top: 18px;
  font-size: 16.5px;
  font-weight: 700;
}

.field-card__desc {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--text-2);
  font-weight: 300;
}

.field-card__tag {
  display: inline-block;
  margin-top: 18px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 4px 12px;
}

/* ---------- 数据指标 ---------- */
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.stat-card {
  text-align: center;
  padding: 30px 18px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.45s var(--ease-out), border-color 0.45s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}

.stat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat__suffix {
  margin-left: 2px;
  font-size: 1rem;
}

.stat__label {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
}

.stat__src {
  margin-top: 8px;
  font-size: 11.5px;
  color: var(--text-3);
}

/* ---------- 分析简报 ---------- */
.news__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.news-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.45s var(--ease-out), border-color 0.45s ease, box-shadow 0.45s ease;
}

.news-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

.news-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.news-card__tag {
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 11px;
  border-radius: 999px;
  border: 1px solid;
}

.news-card__date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  flex-shrink: 0;
}

.tag--open {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: rgba(45, 212, 191, 0.3);
}

.tag--supply {
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.1);
  border-color: rgba(251, 191, 36, 0.3);
}

.tag--vuln {
  color: #f87171;
  background: rgba(248, 113, 113, 0.1);
  border-color: rgba(248, 113, 113, 0.3);
}

.tag--threat {
  color: #a78bfa;
  background: rgba(167, 139, 250, 0.1);
  border-color: rgba(167, 139, 250, 0.3);
}

.tag--ai {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.3);
}

.tag--emerging {
  color: #fb923c;
  background: rgba(251, 146, 60, 0.1);
  border-color: rgba(251, 146, 60, 0.3);
}

.news-card__title {
  margin-top: 14px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
}

.news-card__desc {
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--text-2);
  font-weight: 300;
  flex: 1;
}

.news-card__meta {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 12.5px;
  color: var(--text-3);
}

.news-card {
  cursor: pointer;
}

.news-card__read {
  font-family: inherit;
  font-weight: 700;
  font-size: 12.5px;
  color: var(--accent);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  white-space: nowrap;
  transition: letter-spacing 0.3s ease;
}

.news-card__read:hover {
  letter-spacing: 0.06em;
}

/* ---------- 新区块响应式 ---------- */
@media (max-width: 1024px) {
  .fields__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .news__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .about {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .fields__grid,
  .stats__grid,
  .news__grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- 无障碍：减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  html {
    scroll-behavior: auto;
  }
}