/* ================================================================
   金宝搏苹果 · 全站共享样式 /assets/site.css
   视觉语言：深空黑底 / 苹果金索引线 / 刊头式头部 / 精密网格
   ================================================================ */

:root {
  --color-ink: #0B0F19;
  --color-paper: #F5F1E8;
  --color-gold: #E6B21A;
  --color-green: #00C48C;
  --color-orange: #FF6B35;
  --color-steel: #232A3A;
  --color-silver: #A8B2C1;
  --color-midnight: #14213D;
  --color-body: #B8C1D1;
  --font-display: "Noto Sans SC", "PingFang SC", "Helvetica Neue", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Helvetica Neue", sans-serif;
  --font-mono: "SF Mono", "Roboto Mono", monospace;
  --site-width: 1280px;
  --gutter: clamp(20px, 4vw, 48px);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  min-height: 100vh;
  background-color: var(--color-ink);
  background-image:
    linear-gradient(to right, rgba(245, 241, 232, 0.022) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(245, 241, 232, 0.022) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--color-body);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-paper);
  text-transform: uppercase;
  text-wrap: balance;
}

h1 { font-size: clamp(40px, 8vw, 64px); }
h2 { font-size: clamp(28px, 5vw, 40px); }
h3 { font-size: clamp(20px, 3vw, 24px); }
h4 { font-size: clamp(18px, 2vw, 20px); }
h5 { font-size: 16px; }
h6 { font-size: 14px; }

p {
  text-wrap: pretty;
}

a {
  color: var(--color-gold);
  text-decoration: none;
  transition: color 200ms var(--ease);
}

a:hover {
  color: var(--color-paper);
}

img, figure, video {
  display: block;
  max-width: 100%;
}

ul, ol {
  list-style: none;
}

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

:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

::selection {
  background: var(--color-gold);
  color: var(--color-ink);
}

#main-content {
  min-height: 60vh;
}

#main-content:focus {
  outline: none;
}

.container {
  width: 100%;
  max-width: var(--site-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 滚动进度与跳过 ---------- */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold) 68%, var(--color-orange) 100%);
  z-index: 1200;
  pointer-events: none;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2000;
  display: inline-block;
  padding: 10px 18px;
  background: var(--color-gold);
  color: var(--color-ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  transform: translateY(-100%);
  transition: transform 200ms var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 头部 ---------- */

.site-header {
  position: relative;
  z-index: 100;
  background: var(--color-ink);
  border-top: 3px solid var(--color-gold);
  border-bottom: 1px solid var(--color-steel);
}

.site-header__frame {
  position: relative;
  max-width: var(--site-width);
  margin-inline: auto;
  padding: 0 var(--gutter);
}

.site-header__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding-block: 8px;
  border-bottom: 1px solid var(--color-steel);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-silver);
}

.site-header__version {
  position: relative;
  padding-left: 14px;
  font-weight: 700;
  color: var(--color-gold);
}

.site-header__version::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 1px;
  background: var(--color-gold);
}

.site-header__status {
  display: inline-flex;
  align-items: center;
  color: var(--color-silver);
}

.status-dot {
  width: 6px;
  height: 6px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--color-green);
  box-shadow: 0 0 0 0 rgba(0, 196, 140, 0.45);
  animation: status-pulse 2.4s infinite;
}

@keyframes status-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(0, 196, 140, 0.45); }
  70%  { box-shadow: 0 0 0 8px rgba(0, 196, 140, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 196, 140, 0); }
}

.site-header__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-block: 26px 20px;
  text-align: center;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-paper);
}

.site-brand:hover {
  color: var(--color-paper);
}

.site-brand__num {
  font-family: var(--font-mono);
  font-size: clamp(42px, 7vw, 58px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.06em;
  color: var(--color-gold);
  transition: color 200ms var(--ease);
}

.site-brand:hover .site-brand__num {
  color: var(--color-orange);
}

.site-brand__title {
  display: block;
  text-align: left;
}

.site-brand__cn {
  display: block;
  font-size: clamp(24px, 4.4vw, 36px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-paper);
  white-space: nowrap;
}

.site-brand__sub {
  display: block;
  margin-top: 3px;
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--color-silver);
  text-align: center;
}

.site-header__tagline {
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-silver);
}

.site-nav {
  position: relative;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  border-top: 1px solid var(--color-steel);
}

.site-nav__item {
  position: relative;
}

.site-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 22px;
  color: var(--color-body);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.1em;
  transition:
    background-color 200ms var(--ease),
    color 200ms var(--ease),
    box-shadow 200ms var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 0;
  height: 2px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms var(--ease);
}

.site-nav__link:hover {
  color: var(--color-paper);
  background: var(--color-steel);
}

.site-nav__link:hover::after {
  transform: scaleX(1);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-paper);
}

.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--color-gold);
  opacity: 0.85;
}

.site-nav__label {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.14em;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding-block: 14px;
  border-top: 1px solid var(--color-steel);
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--color-paper);
}

.nav-toggle__icon {
  position: relative;
  width: 22px;
  height: 14px;
  flex-shrink: 0;
}

.nav-toggle__bar {
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--color-gold);
  transition: top 200ms var(--ease), transform 200ms var(--ease), opacity 180ms var(--ease);
}

.nav-toggle__bar:nth-child(1) { top: 0; }
.nav-toggle__bar:nth-child(2) { top: 6px; }
.nav-toggle__bar:nth-child(3) { top: 12px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
}

.nav-toggle__text {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.2em;
}

.site-header__code {
  position: absolute;
  right: 6px;
  bottom: 12px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: rgba(168, 178, 193, 0.32);
  writing-mode: vertical-rl;
  pointer-events: none;
}

/* ---------- 页脚 ---------- */

.site-footer {
  position: relative;
  z-index: 10;
  margin-top: clamp(48px, 8vw, 96px);
  background: var(--color-ink);
  color: var(--color-silver);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 42%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold) 46%, transparent 100%);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 1.1fr;
  gap: clamp(24px, 4vw, 64px);
  padding-block: 48px 40px;
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-footer__logo {
  display: inline-block;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--color-paper);
}

.site-footer__logo:hover {
  color: var(--color-gold);
}

.site-footer__slogan {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-silver);
}

.site-footer__note {
  position: relative;
  margin-top: 18px;
  max-width: 360px;
  padding-left: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-silver);
}

.site-footer__note::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-gold);
}

.site-footer__heading {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-footer__links a {
  display: inline-block;
  padding-block: 6px;
  font-size: 14px;
  color: var(--color-silver);
  transition: color 200ms var(--ease), transform 200ms var(--ease);
}

.site-footer__links a::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 10px;
  background: var(--color-gold);
  vertical-align: middle;
  transition: transform 200ms var(--ease);
}

.site-footer__links a:hover {
  color: var(--color-paper);
}

.site-footer__links a:hover::before {
  transform: translateX(4px);
}

.site-footer__contact {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-footer__contact p {
  padding-block: 5px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-silver);
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding-block: 18px;
  border-top: 1px solid var(--color-steel);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--color-silver);
}

.site-footer__copy,
.site-footer__icp {
  margin: 0;
}

/* ---------- 通用组件 ---------- */

.section {
  padding-block: clamp(48px, 8vw, 96px);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 10px 20px;
  margin-bottom: 32px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-steel);
}

.section-index {
  align-self: center;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-gold);
}

.section-title {
  margin: 0;
  font-size: clamp(26px, 4vw, 40px);
}

.section-sub {
  margin-left: auto;
  max-width: 280px;
  text-align: right;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-silver);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 24px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}

.btn--gold {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-ink);
}

.btn--gold:hover {
  background: transparent;
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-silver);
  color: var(--color-paper);
}

.btn--ghost:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.breadcrumb {
  margin-block: 8px 24px;
  padding-block: 14px;
  border-top: 1px solid var(--color-steel);
  border-bottom: 1px solid var(--color-steel);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-silver);
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb__link {
  color: var(--color-silver);
}

.breadcrumb__link:hover {
  color: var(--color-gold);
}

.breadcrumb__sep {
  font-family: var(--font-mono);
  color: var(--color-steel);
}

.breadcrumb__current {
  color: var(--color-paper);
}

.card {
  position: relative;
  padding: 24px;
  background: var(--color-steel);
  border: 1px solid var(--color-steel);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

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

.card--paper {
  background: var(--color-paper);
  color: var(--color-ink);
}

.card--midnight {
  background: var(--color-midnight);
  border-color: transparent;
}

.card__title {
  margin-bottom: 8px;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--color-paper);
}

.card--paper .card__title {
  color: var(--color-ink);
}

.card__desc {
  font-size: 14px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--color-silver);
}

.card--paper .card__desc {
  color: #3A4256;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--color-steel);
  border: 1px solid var(--color-steel);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--color-gold);
}

.tag--green {
  color: var(--color-green);
  border-color: rgba(0, 196, 140, 0.4);
}

.tag--orange {
  color: var(--color-orange);
  border-color: rgba(255, 107, 53, 0.4);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.caption {
  font-size: 12px;
  line-height: 1.65;
  letter-spacing: 0.08em;
  color: var(--color-silver);
}

/* ---------- 图片占位与显现 ---------- */

.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--color-midnight);
  border: 1px solid var(--color-steel);
}

.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--3x4 { aspect-ratio: 3 / 4; }

.media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media__ph {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 0%, transparent 46%, rgba(230, 178, 26, 0.14) 100%),
    linear-gradient(180deg, var(--color-midnight) 0%, var(--color-steel) 100%);
}

.media__ph::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245, 241, 232, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 241, 232, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
}

.media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--color-ink);
  border-top: 1px solid var(--color-gold);
  border-right: 1px solid var(--color-steel);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--color-silver);
}

html.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}

html.js-reveal [data-reveal][data-revealed] {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */

@media (max-width: 1023px) {
  .site-header__code {
    display: none;
  }

  .site-nav__link {
    padding: 12px 14px;
  }

  .site-nav__label {
    font-size: 13px;
    letter-spacing: 0.08em;
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__contact {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767px) {
  .site-header__brand {
    padding-block: 18px 12px;
  }

  .site-brand__num {
    font-size: 36px;
  }

  .site-brand__cn {
    font-size: 22px;
    letter-spacing: 0.05em;
  }

  .site-brand__sub {
    font-size: 10px;
    letter-spacing: 0.28em;
  }

  .site-header__tagline {
    font-size: 11px;
    letter-spacing: 0.16em;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav__list {
    display: none;
    flex-direction: column;
  }

  .site-nav[data-open] .site-nav__list {
    display: flex;
    border-top: 1px solid var(--color-steel);
  }

  .site-nav__item {
    border-bottom: 1px solid var(--color-steel);
  }

  .site-nav__link {
    justify-content: flex-start;
    padding: 14px 2px;
  }

  .site-nav__link::after {
    left: 2px;
    right: 2px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
  }

  .site-footer__contact {
    grid-column: auto;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .site-brand__num {
    font-size: 30px;
  }

  .site-brand__cn {
    font-size: 19px;
  }

  .site-brand__sub {
    letter-spacing: 0.2em;
  }

  .site-header__tagline {
    font-size: 10px;
    letter-spacing: 0.12em;
  }

  .site-nav__link {
    padding-block: 13px;
  }
}

/* ---------- 减少动态 ---------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html.js-reveal [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .status-dot {
    animation: none;
  }
}