/* ============================================================
   今测 JINCE 官网 · 设计令牌 + 基础层  v2.0
   ------------------------------------------------------------
   风格体系：High-tech Glassmorphism
     · 霓虹青柠强调色 (neon lime)
     · 深曜石表面 (deep obsidian)
     · 建筑网格 (architectural grid) + 有机光晕 (organic glow)
     · 玻璃拟态 (backdrop-blur) + 颗粒噪声 (grain)
     · 浮动壳层 (floating shell) —— 见 theme-glass.css
   字体：Space Grotesk 标题 / JetBrains Mono 等宽 / 系统中文栈正文
   （字体自托管，见 assets/css/fonts.css）

   备选主题：<html data-glow="violet"> 切回上一版紫蓝霓虹。
   ============================================================ */

:root {
  /* ---- 曜石表面：从近黑到抬升，冷调不发蓝 ---- */
  --bg-0: #07080a;
  --bg-1: #0b0d11;
  --bg-2: #101318;
  --bg-3: #161a20;

  /* ---- 玻璃面板 ---- */
  --glass: rgba(17, 21, 26, 0.62);
  --glass-2: rgba(11, 13, 17, 0.46);
  --glass-3: rgba(24, 29, 35, 0.55);
  --glass-line: rgba(255, 255, 255, 0.09);
  --glass-line-2: rgba(255, 255, 255, 0.16);
  --blur: 26px;

  /* ---- 发丝线 ---- */
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.16);
  --line-3: rgba(255, 255, 255, 0.28);

  /* ---- 文字 ---- */
  --fg: #eef1f4;
  --fg-2: rgba(238, 241, 244, 0.64);
  --fg-3: rgba(238, 241, 244, 0.36);

  /* ---- 霓虹青柠：全站唯一强调色 ---- */
  --lime: #ccff00;
  --lime-2: #a3cc00;
  --lime-3: #efffc2;
  --lime-dim: rgba(204, 255, 0, 0.14);
  --lime-glow: rgba(204, 255, 0, 0.42);

  /* 兼容旧变量名（进度条 / eyebrow / 焦点环等处引用） */
  --neon-1: #a3cc00;
  --neon-2: #ccff00;
  --neon-3: #e2ff80;
  --glow-a: rgba(204, 255, 0, 0.34);
  --glow-b: rgba(16, 185, 129, 0.26);
  --signal: #ccff00;

  /* ---- 建筑网格 ---- */
  --grid-line: rgba(255, 255, 255, 0.045);
  --grid-line-2: rgba(255, 255, 255, 0.028);
  --grid-size: 88px;
  --grid-size-sm: 22px;

  /* ---- 首屏标题渐变（两行都上色，字体不变） ---- */
  --grad-title-1: linear-gradient(
    96deg,
    #ffffff 0%,
    #e9eef1 52%,
    #c3ccd2 100%
  );
  --grad-title-2: linear-gradient(
    92deg,
    #efffc2 0%,
    #ccff00 46%,
    #e2ff80 100%
  );

  /* ---- 字体 ---- */
  --font-display: "Space Grotesk", "PingFang SC", "HarmonyOS Sans SC",
    "MiSans", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei",
    system-ui, sans-serif;
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "MiSans",
    "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", "Segoe UI",
    system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", "SF Mono", "Consolas",
    ui-monospace, monospace;

  /* ---- 版心与节奏 ---- */
  --wrap: 1700px;
  --gutter: clamp(20px, 4vw, 64px);
  --sec-pad: clamp(96px, 12vh, 170px);
  --nav-h: 76px;
  --r-s: 8px;
  --r-m: 14px;
  --r-l: 22px;
  --r-xl: 30px;
  --shell-r: 30px;

  /* ---- 阴影 ---- */
  --shadow-panel: 0 24px 70px -30px rgba(0, 0, 0, 0.9);
  --shadow-pop: 0 30px 90px -32px rgba(0, 0, 0, 0.95);

  /* ---- 动效 ---- */
  --ease: cubic-bezier(0.22, 0.61, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.9s;
}

/* 备选主题：上一版紫蓝霓虹（保留，便于对比） */
html[data-glow="violet"] {
  --lime: #c08cff;
  --lime-2: #8b7cff;
  --lime-3: #d9c9ff;
  --lime-dim: rgba(139, 124, 255, 0.16);
  --lime-glow: rgba(139, 124, 255, 0.42);
  --neon-1: #8b7cff;
  --neon-2: #ccff00;
  --neon-3: #c084fc;
  --glow-a: rgba(124, 92, 255, 0.42);
  --glow-b: rgba(204, 255, 0, 0.3);
  --signal: #b7f04a;
  --grad-title-2: linear-gradient(92deg, #c4b5fd 0%, #8b7cff 45%, #e2ff80 100%);
}

/* ============================================================
   Reset / 基础
   ============================================================ */

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

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

body {
  background: var(--bg-0);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* ---- 有机光晕：固定层，青柠主 + 青绿次，勾出立体感 ---- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(
      1200px 760px at 82% -8%,
      rgba(204, 255, 0, 0.11),
      transparent 62%
    ),
    radial-gradient(
      1000px 640px at -4% 28%,
      rgba(16, 185, 129, 0.075),
      transparent 60%
    ),
    radial-gradient(
      900px 620px at 50% 118%,
      rgba(139, 124, 255, 0.07),
      transparent 64%
    );
}

/* ---- 建筑网格：主格 + 细密小格，向四周淡出 ---- */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    linear-gradient(var(--grid-line-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-2) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size),
    var(--grid-size) var(--grid-size),
    var(--grid-size-sm) var(--grid-size-sm),
    var(--grid-size-sm) var(--grid-size-sm);
  mask-image: radial-gradient(
    130% 100% at 50% 0%,
    #000 8%,
    rgba(0, 0, 0, 0.5) 52%,
    transparent 88%
  );
  -webkit-mask-image: radial-gradient(
    130% 100% at 50% 0%,
    #000 8%,
    rgba(0, 0, 0, 0.5) 52%,
    transparent 88%
  );
}

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

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: 0;
  cursor: pointer;
}

::selection {
  background: var(--lime);
  color: #07080a;
}

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 4px;
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-0);
}
::-webkit-scrollbar-thumb {
  background: #242a31;
  border-radius: 5px;
  border: 2px solid var(--bg-0);
}
::-webkit-scrollbar-thumb:hover {
  background: #39424a;
}

/* ---- 颗粒噪声：压住大面积纯色的模板感 ---- */
.grain {
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- 版心 ---- */
.wrap {
  width: min(var(--wrap), 100% - var(--gutter) * 2);
  margin-inline: auto;
}

section {
  position: relative;
  z-index: 1;
  scroll-margin-top: calc(var(--nav-h) + 12px);
}

/* ---- 等宽 eyebrow 标签 ---- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--fg-3);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: linear-gradient(90deg, var(--lime), var(--neon-3));
  flex: none;
  box-shadow: 0 0 10px -1px var(--lime-glow);
}

/* ---- 分区标题组：Space Grotesk 编辑感大字 ---- */
.sec-head {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: 48px;
  align-items: end;
}

.sec-head__title {
  margin-top: 26px;
  font-family: var(--font-display);
  font-size: clamp(34px, 4.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 600;
}

.sec-head__lead {
  color: var(--fg-2);
  font-size: 16.5px;
  max-width: 32em;
  padding-bottom: 6px;
}

/* ---- 按钮：青柠实心 + 玻璃描边 ---- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 54px;
  padding: 0 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: background 0.35s var(--ease), color 0.35s var(--ease),
    border-color 0.35s var(--ease), transform 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
}

.btn__arrow {
  font-family: var(--font-mono);
  transition: transform 0.35s var(--ease);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

.btn--solid {
  background: var(--lime);
  color: #0a0d05;
  box-shadow: 0 10px 40px -14px var(--lime-glow);
}

.btn--solid:hover {
  background: var(--lime-3);
  transform: translateY(-1px);
  box-shadow: 0 16px 48px -12px var(--lime-glow);
}

.btn--ghost {
  border: 1px solid var(--glass-line-2);
  background: var(--glass-2);
  color: var(--fg);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.btn--ghost:hover {
  border-color: var(--lime);
  color: var(--lime);
  background: var(--lime-dim);
}

.btn-sm {
  height: 46px;
  padding: 0 22px;
  font-size: 14px;
}

/* ---- 无障碍：动效开关 ---- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  /* 循环类动效直接停掉，别让它瞬间闪一下 */
  .marquee__track,
  .hero__nebula i,
  .hero__scroll i,
  .hero__hud i,
  .ticket__dot {
    animation: none !important;
  }
  .hero__scan {
    display: none;
  }
  .progress__bar {
    transition: none;
  }
}

@media (max-width: 1100px) {
  .sec-head {
    grid-template-columns: 1fr;
    gap: 20px;
    align-items: start;
  }
}