/* ==========================================================================
   黑料永久 · 设计系统  (assets/css/style.css)
   视觉概念：「编辑部 × 料镜」
   暖纸底 + 墨黑描边 + 珊瑚红 / 电光靛蓝 点缀，硬投影（risograph）圆角卡片
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 色板 */
  --paper:      #FBF5EC;
  --paper-2:    #F4EAD9;
  --paper-3:    #EFE3CE;
  --ink:        #16121B;
  --ink-2:      #241E2C;
  --ink-70:     rgba(22, 18, 27, 0.72);
  --ink-50:     rgba(22, 18, 27, 0.52);
  --ink-30:     rgba(22, 18, 27, 0.30);
  --line:       rgba(22, 18, 27, 0.14);
  --line-2:     rgba(22, 18, 27, 0.26);

  --coral:      #FF3D5F;
  --coral-2:    #E01E44;
  --indigo:     #2E2AE8;
  --indigo-2:   #1D18B8;
  --lime:       #D8FF57;
  --violet:     #7B4BF5;
  --mint:       #6FE3BE;
  --amber:      #FFB020;

  /* 字体 */
  --font-display: "Noto Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Consolas, "Courier New", monospace;

  /* 圆角 */
  --r-xl: 34px;
  --r-lg: 26px;
  --r-md: 18px;
  --r-sm: 12px;
  --r-pill: 999px;

  /* 阴影 */
  --shadow-hard: 7px 7px 0 var(--ink);
  --shadow-hard-sm: 5px 5px 0 var(--ink);
  --shadow-soft: 0 22px 60px -28px rgba(22, 18, 27, 0.45);
  --shadow-card: 0 14px 40px -24px rgba(22, 18, 27, 0.55);

  /* 布局 */
  --maxw: 1180px;
  --gutter: 24px;
  --header-h: 74px;

  /* 节奏 */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 18px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(15.5px, 0.55vw + 14.2px, 17px);
  line-height: 1.72;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(1100px 520px at 88% -8%, rgba(255, 61, 95, 0.13), transparent 62%),
    radial-gradient(900px 480px at -10% 12%, rgba(46, 42, 232, 0.11), transparent 60%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 纸张颗粒质感 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

img, svg, video { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible {
  outline: 3px solid var(--indigo);
  outline-offset: 3px;
  border-radius: 6px;
}

button { font: inherit; color: inherit; cursor: pointer; }

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 1em; padding-left: 1.15em; }
li { margin-bottom: 0.4em; }

strong { font-weight: 700; color: var(--ink); }

hr, .rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* ---------- 3. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 2;
}

.section { padding: clamp(56px, 8vw, 104px) 0; position: relative; }
.section--tight { padding: clamp(40px, 5vw, 64px) 0; }
.section--dark {
  background: var(--ink);
  color: var(--paper);
  border-block: 1px solid var(--ink);
}
.section--dark h2, .section--dark h3, .section--dark strong { color: var(--paper); }
.section--dark .lede { color: rgba(251, 245, 236, 0.72); }
.section--dark .eyebrow { color: var(--lime); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--ink);
  color: var(--paper);
  padding: 12px 20px;
  border-radius: 0 0 var(--r-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------- 4. 排版组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--coral-2);
  margin: 0 0 18px;
}
.eyebrow::before {
  content: "";
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 4px rgba(255, 61, 95, 0.18);
  flex: none;
  animation: pulse-dot 2.6s var(--ease) infinite;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 4px rgba(255, 61, 95, 0.18); }
  50%      { box-shadow: 0 0 0 9px rgba(255, 61, 95, 0.05); }
}

.display {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 6.4vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.025em;
}
.h2 {
  font-size: clamp(28px, 3.7vw, 46px);
  font-weight: 900;
  letter-spacing: -0.02em;
}
.h3 { font-size: clamp(20px, 1.6vw, 24px); }
.lede {
  font-size: clamp(16px, 1.05vw, 18.5px);
  color: var(--ink-70);
  max-width: 62ch;
}
.mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.06em; }
.muted { color: var(--ink-50); }
.mark { color: var(--coral-2); }

.underlined {
  background-image: linear-gradient(transparent 62%, rgba(216, 255, 87, 0.85) 62%);
  background-repeat: no-repeat;
}

.section-head { max-width: 720px; margin-bottom: clamp(32px, 4vw, 52px); }

.text-row { display: flex; flex-wrap: wrap; gap: 12px 26px; align-items: center; }

/* ---------- 5. 按钮 ---------- */
.btn {
  --btn-bg: var(--ink);
  --btn-fg: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border: 1.5px solid var(--ink);
  border-radius: var(--r-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-sans);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), background 0.22s var(--ease), color 0.22s var(--ease);
  box-shadow: var(--shadow-hard-sm);
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); }
.btn:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); }
.btn svg { width: 18px; height: 18px; flex: none; }

.btn--primary { --btn-bg: var(--coral); --btn-fg: #fff; }
.btn--primary:hover { --btn-bg: var(--coral-2); }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--ink); }
.btn--ghost:hover { --btn-bg: var(--ink); --btn-fg: var(--paper); }
.btn--lime { --btn-bg: var(--lime); --btn-fg: var(--ink); }
.btn--dark { --btn-bg: var(--ink); --btn-fg: var(--paper); }
.btn--sm { padding: 10px 18px; font-size: 14px; box-shadow: 4px 4px 0 var(--ink); }
.btn--block { width: 100%; }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; color: var(--indigo-2);
  border-bottom: 2px solid currentColor;
  padding-bottom: 2px;
  transition: gap 0.2s var(--ease), color 0.2s var(--ease);
}
.link-arrow:hover { gap: 14px; color: var(--coral-2); }

/* ---------- 6. 页头 / 导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(251, 245, 236, 0.78);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(251, 245, 236, 0.93);
  box-shadow: 0 10px 30px -22px rgba(22, 18, 27, 0.5);
}
.header-inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand__mark {
  width: 42px; height: 42px; flex: none;
  display: grid; place-items: center;
  border-radius: 13px;
  background: var(--ink);
  border: 1.5px solid var(--ink);
  box-shadow: 3px 3px 0 var(--coral);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.brand:hover .brand__mark { transform: rotate(-6deg); box-shadow: 4px 4px 0 var(--coral); }
.brand__mark svg { width: 24px; height: 24px; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-family: var(--font-display); font-weight: 900; font-size: 19px; letter-spacing: -0.01em; }
.brand__sub { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.18em; color: var(--ink-50); text-transform: uppercase; }

.nav-links {
  display: flex; align-items: center; gap: 4px;
  list-style: none; margin: 0; padding: 0;
}
.nav-links li { margin: 0; }
.nav-links a {
  display: inline-block;
  padding: 9px 15px;
  border-radius: var(--r-pill);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-70);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.nav-links a:hover { background: rgba(22, 18, 27, 0.06); color: var(--ink); }
.nav-links a[aria-current="page"] { color: var(--ink); background: rgba(255, 61, 95, 0.12); }

.header-cta { display: flex; align-items: center; gap: 10px; flex: none; }

.nav-toggle {
  display: none;
  width: 46px; height: 46px;
  border: 1.5px solid var(--ink);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: 3px 3px 0 var(--ink);
  align-items: center; justify-content: center;
  flex-direction: column; gap: 5px;
}
.nav-toggle span {
  display: block; width: 20px; height: 2.5px;
  background: var(--ink); border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- 7. 首屏 ---------- */
.hero { padding: clamp(44px, 6vw, 84px) 0 clamp(40px, 5vw, 68px); position: relative; }
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(32px, 5vw, 68px);
  align-items: center;
}
.hero h1 { margin-bottom: 22px; }
.hero .lede { margin-bottom: 30px; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.stat__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1;
  letter-spacing: -0.02em;
  display: flex; align-items: baseline; gap: 2px;
}
.stat__num i { font-style: normal; font-size: 0.55em; color: var(--coral-2); font-weight: 900; }
.stat__label { font-size: 13.5px; color: var(--ink-50); margin-top: 8px; }

/* 首屏右侧：料镜装置 */
.lens-stage {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 480px;
  margin-inline: auto;
  width: 100%;
}
.lens-core {
  position: absolute; inset: 12%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 26%, #fff 0%, rgba(255,255,255,0) 46%),
    conic-gradient(from 210deg, var(--coral), var(--violet), var(--indigo), var(--mint), var(--coral));
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard), inset 0 0 60px rgba(255,255,255,0.35);
  animation: slow-spin 24s linear infinite;
}
.lens-core::after {
  content: "";
  position: absolute; inset: 26%;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--ink);
}
@keyframes slow-spin { to { transform: rotate(360deg); } }

.lens-ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 1.5px dashed var(--line-2);
  animation: slow-spin 46s linear infinite reverse;
}

.float-card {
  position: absolute;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-hard-sm);
  padding: 13px 16px;
  display: flex; align-items: center; gap: 11px;
  font-size: 13.5px;
  font-weight: 700;
  animation: float-y 6s var(--ease) infinite;
}
.float-card small { display: block; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.08em; color: var(--ink-50); font-weight: 600; }
.float-card .dot {
  width: 32px; height: 32px; border-radius: 10px; flex: none;
  display: grid; place-items: center; color: #fff;
}
.float-card--a { top: 4%;  left: -4%;  animation-delay: 0s; }
.float-card--b { top: 40%; right: -8%; animation-delay: 1.4s; }
.float-card--c { bottom: 5%; left: 6%; animation-delay: 2.6s; }
@keyframes float-y { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ---------- 8. 跑马灯 ---------- */
.ticker {
  border-block: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
  padding: 13px 0;
}
.ticker__track {
  display: flex; gap: 0; width: max-content;
  animation: marquee 34s linear infinite;
}
.ticker:hover .ticker__track { animation-play-state: paused; }
.ticker__track span {
  display: inline-flex; align-items: center; gap: 14px;
  padding: 0 26px;
  font-family: var(--font-mono);
  font-size: 13.5px; letter-spacing: 0.05em;
  white-space: nowrap;
}
.ticker__track span::after { content: "◆"; color: var(--coral); font-size: 9px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 9. 卡片 ---------- */
.grid { display: grid; gap: clamp(18px, 2vw, 26px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  position: relative;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--r-lg);
  padding: clamp(22px, 2.4vw, 30px);
  box-shadow: var(--shadow-hard-sm);
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease);
  display: flex; flex-direction: column;
  height: 100%;
}
.card:hover { transform: translate(-3px, -3px); box-shadow: 9px 9px 0 var(--ink); }
.card__icon {
  width: 52px; height: 52px; flex: none;
  border-radius: 16px;
  display: grid; place-items: center;
  border: 1.5px solid var(--ink);
  margin-bottom: 20px;
}
.card__icon svg { width: 26px; height: 26px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--ink-70); font-size: 15px; margin-bottom: 0; }
.card--accent { background: var(--lime); }
.card--dark { background: var(--ink); color: var(--paper); }
.card--dark p { color: rgba(251,245,236,0.72); }
.card--dark h3 { color: var(--paper); }

.card__num {
  font-family: var(--font-mono);
  font-size: 12px; font-weight: 600; letter-spacing: 0.16em;
  color: var(--ink-50);
  margin-bottom: 14px;
}

/* 整卡点击热区：让卡片整体可点击，同时保持内部标题/段落语义合法 */
.card__hit {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: block;
  padding: 0;
  border: 0;
  background: transparent;
  border-radius: inherit;
  cursor: pointer;
}
.card__hit:focus-visible { outline: 3px solid var(--indigo); outline-offset: 4px; }

/* 屏幕阅读器专用文本 */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* 频道卡 */
.channel-card { padding: 0; overflow: hidden; }
.channel-card__top {
  height: 132px;
  border-bottom: 1.5px solid var(--ink);
  position: relative;
  display: grid; place-items: center;
  overflow: hidden;
}
.channel-card__top::after {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(22,18,27,0.22) 1px, transparent 1px);
  background-size: 14px 14px;
  opacity: 0.5;
}
.channel-card__top svg { width: 54px; height: 54px; position: relative; z-index: 1; }
.channel-card__body { padding: 22px 24px 26px; }
.channel-card__body h3 { margin-bottom: 8px; }
.channel-card__body p { font-size: 14.5px; color: var(--ink-70); margin-bottom: 16px; }
.channel-card .meta-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tag {
  font-family: var(--font-mono);
  font-size: 11.5px; font-weight: 600; letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-2);
  color: var(--ink-70);
  background: var(--paper-2);
}

/* ---------- 10. 筛选 chips ---------- */
.chips {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 34px;
}
.chip {
  padding: 10px 20px;
  border: 1.5px solid var(--ink);
  border-radius: var(--r-pill);
  background: var(--paper);
  font-size: 14.5px; font-weight: 700;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}
.chip:hover { transform: translateY(-2px); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

/* 资讯列表卡 */
.article-card { padding: 0; overflow: hidden; cursor: pointer; text-align: left; width: 100%; }
.article-card__inner { position: relative; z-index: 2; }
.article-card__bar { height: 8px; border-bottom: 1.5px solid var(--ink); }
.article-card__inner { padding: 22px 24px 24px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.article-card__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.article-card__cat {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-70);
  border: 1px solid var(--line-2); border-radius: var(--r-pill);
  padding: 3px 10px;
}
.article-card h3 { font-size: 18.5px; margin: 0; }
.article-card p { font-size: 14.5px; color: var(--ink-70); margin: 0; flex: 1; }
.article-card__foot {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding-top: 14px; border-top: 1px dashed var(--line);
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-50);
}
.article-card__foot .live::before {
  content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--coral); margin-right: 7px; vertical-align: middle;
}

/* ---------- 11. 步骤 ---------- */
.steps { counter-reset: step; display: grid; gap: 20px; }
.step {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding: 26px 28px;
  border: 1.5px solid var(--ink);
  border-radius: var(--r-lg);
  background: var(--paper);
  box-shadow: var(--shadow-hard-sm);
}
.step__idx {
  counter-increment: step;
  width: 62px; height: 62px; flex: none;
  border-radius: 50%;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 900; font-size: 24px;
  border: 1.5px solid var(--ink);
}
.step__idx::before { content: counter(step, decimal-leading-zero); }
.step h3 { font-size: 20px; margin-bottom: 6px; }
.step p { margin: 0; color: var(--ink-70); font-size: 15px; }

/* ---------- 12. 大字报 / 数据带 ---------- */
.bignum {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(46px, 9vw, 128px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  display: flex; align-items: baseline; gap: 6px;
}
.bignum i { font-style: normal; font-size: 0.32em; color: var(--lime); font-weight: 900; }

/* ---------- 13. 下载 / CTA 区块 ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-xl);
  border: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  padding: clamp(34px, 5vw, 62px);
  box-shadow: var(--shadow-hard);
}
.cta-band::before {
  content: "";
  position: absolute; right: -90px; top: -90px;
  width: 320px; height: 320px; border-radius: 50%;
  background: conic-gradient(from 120deg, var(--coral), var(--violet), var(--indigo), var(--coral));
  filter: blur(6px);
  opacity: 0.55;
}
.cta-band__grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(28px, 4vw, 56px); align-items: center;
}
.cta-band h2 { color: var(--paper); }
.cta-band p { color: rgba(251, 245, 236, 0.75); }
.cta-band .eyebrow { color: var(--lime); }
.cta-band .btn--ghost { --btn-fg: var(--paper); border-color: rgba(251,245,236,0.6); }
.cta-band .btn--ghost:hover { --btn-bg: var(--paper); --btn-fg: var(--ink); border-color: var(--paper); }

.qr-box {
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--r-lg);
  padding: 22px;
  text-align: center;
  color: var(--ink);
  box-shadow: var(--shadow-hard-sm);
}
.qr-box h3 { font-size: 16.5px; margin-bottom: 14px; }
.qr-img {
  width: 100%;
  max-width: 200px;
  margin: 0 auto 14px;
  border-radius: 14px;
  border: 1.5px solid var(--ink);
  overflow: hidden;
  background: #fff;
}
.qr-img svg { width: 100%; height: auto; display: block; }
.qr-box small { display: block; font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-50); line-height: 1.6; }

.store-btns { display: flex; flex-wrap: wrap; gap: 12px; }
.store-btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 12px 20px;
  border: 1.5px solid var(--paper);
  border-radius: var(--r-md);
  background: rgba(251, 245, 236, 0.06);
  color: var(--paper);
  font-weight: 700;
  transition: background 0.22s var(--ease), transform 0.22s var(--ease);
  text-align: left;
}
.store-btn:hover { background: var(--paper); color: var(--ink); transform: translateY(-3px); }
.store-btn small { display: block; font-family: var(--font-mono); font-size: 10.5px; font-weight: 500; opacity: 0.72; letter-spacing: 0.06em; }

/* ---------- 14. 子页页头 ---------- */
.page-hero {
  padding: clamp(42px, 6vw, 78px) 0 clamp(30px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
  position: relative;
}
.page-hero h1 { margin-bottom: 18px; }
.breadcrumb {
  display: flex; flex-wrap: wrap; gap: 8px;
  font-family: var(--font-mono); font-size: 12.5px;
  color: var(--ink-50); margin-bottom: 20px;
  list-style: none; padding: 0;
}
.breadcrumb li { margin: 0; display: flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: var(--ink-30); }
.breadcrumb a:hover { color: var(--coral-2); }

/* ---------- 15. 手风琴 ---------- */
.accordion { border-top: 1.5px solid var(--ink); }
.acc-item { border-bottom: 1.5px solid var(--ink); }
.acc-item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 4px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(16.5px, 1.4vw, 19px);
}
.acc-item summary::-webkit-details-marker { display: none; }
.acc-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 24px; line-height: 1;
  color: var(--coral-2);
  flex: none;
  transition: transform 0.28s var(--ease);
}
.acc-item[open] summary::after { transform: rotate(45deg); }
.acc-item .acc-body { padding: 0 4px 24px; color: var(--ink-70); max-width: 74ch; }
.acc-item .acc-body p { margin-bottom: 0.8em; }

/* ---------- 16. 页脚 ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(251, 245, 236, 0.7);
  padding: clamp(46px, 6vw, 72px) 0 30px;
  border-top: 1.5px solid var(--ink);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 34px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(251, 245, 236, 0.14);
}
.site-footer .brand__mark { box-shadow: 3px 3px 0 var(--coral); background: var(--paper); }
.site-footer .brand__name { color: var(--paper); }
.site-footer .brand__sub { color: rgba(251,245,236,0.5); }
.footer-about { margin-top: 18px; font-size: 14.5px; max-width: 40ch; line-height: 1.7; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--lime); margin-bottom: 16px; font-weight: 600;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 14.5px; transition: color 0.2s var(--ease), padding-left 0.2s var(--ease); }
.footer-col a:hover { color: var(--paper); padding-left: 5px; }
.footer-bottom {
  padding-top: 26px;
  display: flex; flex-wrap: wrap; gap: 14px 26px;
  align-items: center; justify-content: space-between;
  font-size: 13px;
}
.footer-legal { font-size: 12.5px; line-height: 1.75; max-width: 78ch; color: rgba(251,245,236,0.5); margin-top: 16px; }

/* ---------- 17. 弹窗 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 200;
  display: none;
  align-items: center; justify-content: center;
  padding: 20px;
}
.modal.is-open { display: flex; }
.modal__overlay {
  position: absolute; inset: 0;
  background: rgba(22, 18, 27, 0.62);
  backdrop-filter: blur(4px);
  animation: fade-in 0.25s var(--ease);
}
.modal__panel {
  position: relative; z-index: 1;
  width: min(620px, 100%);
  max-height: 86vh; overflow-y: auto;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-hard);
  padding: clamp(26px, 3.4vw, 40px);
  animation: pop-in 0.3s var(--ease);
}
@keyframes fade-in { from { opacity: 0; } }
@keyframes pop-in { from { opacity: 0; transform: translateY(16px) scale(0.97); } }
.modal__close {
  position: absolute; top: 16px; right: 16px;
  width: 40px; height: 40px;
  border: 1.5px solid var(--ink); border-radius: 12px;
  background: var(--paper);
  font-size: 20px; line-height: 1;
  display: grid; place-items: center;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.modal__close:hover { background: var(--coral); color: #fff; }
.modal__cat {
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--coral-2); font-weight: 600;
}
.modal__title { font-size: clamp(21px, 2.3vw, 27px); margin: 12px 0 14px; }
.modal__meta {
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-50);
  padding-bottom: 18px; margin-bottom: 18px; border-bottom: 1px dashed var(--line);
}
body.modal-open { overflow: hidden; }

/* ---------- 18. 回到顶部 ---------- */
.to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 52px; height: 52px;
  border: 1.5px solid var(--ink); border-radius: 50%;
  background: var(--coral); color: #fff;
  display: grid; place-items: center;
  box-shadow: var(--shadow-hard-sm);
  opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { transform: translateY(-4px); }
.to-top svg { width: 22px; height: 22px; }

/* ---------- 19. 滚动显现 ---------- */
.js-reveal .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.js-reveal .reveal.is-visible { opacity: 1; transform: none; }
.reveal--d1 { transition-delay: 0.08s; }
.reveal--d2 { transition-delay: 0.16s; }
.reveal--d3 { transition-delay: 0.24s; }
.reveal--d4 { transition-delay: 0.32s; }

/* ---------- 20. 其他小组件 ---------- */
.note {
  border-left: 4px solid var(--coral);
  background: var(--paper-2);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  padding: 18px 22px;
  font-size: 14.5px;
  color: var(--ink-70);
}
.note strong { display: block; color: var(--ink); margin-bottom: 4px; }

.quote {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.1vw, 27px);
  line-height: 1.5;
  font-weight: 600;
  border-left: 5px solid var(--lime);
  padding-left: 24px;
  max-width: 46ch;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(28px, 4vw, 60px);
  align-items: center;
}

.timeline { list-style: none; padding: 0; margin: 0; position: relative; }
.timeline li {
  position: relative;
  padding: 0 0 30px 34px;
  border-left: 1.5px solid var(--line-2);
  margin: 0;
}
.timeline li:last-child { border-left-color: transparent; padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute; left: -8.5px; top: 6px;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--coral); border: 2px solid var(--ink);
}
.timeline__year { font-family: var(--font-mono); font-weight: 600; color: var(--coral-2); font-size: 13px; letter-spacing: 0.1em; }
.timeline h3 { font-size: 17.5px; margin: 4px 0 4px; }
.timeline p { font-size: 14.5px; color: var(--ink-70); margin: 0; }

.list-check { list-style: none; padding: 0; margin: 0; }
.list-check li {
  position: relative; padding-left: 32px; margin-bottom: 14px;
  color: var(--ink-70); font-size: 15.5px;
}
.list-check li::before {
  content: ""; position: absolute; left: 0; top: 7px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--lime); border: 1.5px solid var(--ink);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2316121B' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");
  background-size: 11px; background-position: center; background-repeat: no-repeat;
}
.list-check strong { color: var(--ink); }

.empty-state {
  padding: 48px 24px;
  text-align: center;
  border: 1.5px dashed var(--line-2);
  border-radius: var(--r-lg);
  color: var(--ink-50);
}

/* ---------- 21. 响应式 ---------- */
@media (max-width: 1000px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px var(--gutter) 22px;
    background: var(--paper);
    border-bottom: 1.5px solid var(--ink);
    box-shadow: 0 20px 40px -26px rgba(22, 18, 27, 0.6);
    display: none;
  }
  .nav-links.is-open { display: flex; animation: pop-in 0.24s var(--ease); }
  .nav-links a { padding: 13px 16px; border-radius: var(--r-sm); }
  .header-cta .btn { display: none; }
  .header-cta .btn--keep { display: inline-flex; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { order: -1; }
  .cta-band__grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  :root { --gutter: 18px; --r-lg: 22px; --r-xl: 26px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 14px; }
  .step { grid-template-columns: 1fr; gap: 14px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .float-card--a { left: 0; }
  .float-card--b { right: 0; }
  .btn { padding: 13px 22px; }
  .header-cta { gap: 8px; }
}

/* ---------- 22. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .js-reveal .reveal { opacity: 1; transform: none; }
}

/* ---------- 23. 打印 ---------- */
@media print {
  .site-header, .to-top, .modal, .ticker { display: none !important; }
  body { background: #fff; }
  .card, .step, .cta-band { box-shadow: none; }
}