/*
 * style-v2.css — 主页 v2 视觉（配套 index_v2.html）
 *
 * 设计语言：深空底色 + 蓝/橙双色氛围光 + 玻璃拟态卡片
 *   蓝 = 主品牌 / 连接电脑 / 下载；橙 = Token Plan / 算力
 * 结构：bg-fx → nav → hero(主题区+三卡+亮点条) → section(功能/下载/上手/场景/介绍) → cta → footer
 */

/* 自托管字体（Latin 子集，中文回落系统字体；深海主题：几何显示体 + 终端等宽体） */
@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url("./fonts/space-grotesk-latin-wght-normal.woff2") format("woff2-variations");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("./fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2-variations");
}

:root {
  --bg: #05070d;
  /* 卡片底色为实心深色：泡泡等背景元素不会透过卡片（玻璃感靠描边+辉光+blur 保留） */
  --card-hi: rgba(24, 32, 52, 0.97);
  --card-lo: rgba(13, 18, 31, 0.97);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.17);
  --text: #eef2fa;
  --muted: #9aa6bd;
  --muted-2: #67718a;
  --blue: #5a63f5;
  --blue-soft: #9db8ff;
  --orange: #ff7a1a;
  --orange-soft: #ffb45e;
  --green: #3ddc97;
  --radius-lg: 26px;
  --radius: 18px;
  --nav-h: 68px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Space Grotesk", -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, "PingFang SC", "Microsoft YaHei", monospace;
}

/* ── 基础 ─────────────────────────────────────────── */
* { box-sizing: border-box; }

html {
  background: var(--bg);
  scroll-behavior: smooth;
  overflow-x: hidden; /* 横向锁死：与 body 双保险，杜绝手机拖动左右晃 */
}

body {
  position: relative; /* 气泡层的定位基准：覆盖整个文档高度 */
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: transparent;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  overflow-x: clip;
}

h1, h2, h3, h4, p, ul { margin: 0; }
a { color: inherit; }
img { max-width: 100%; }

::selection { background: rgba(106, 141, 255, 0.35); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #070a12; }
::-webkit-scrollbar-thumb { background: #232c44; border-radius: 8px; border: 2px solid #070a12; }
::-webkit-scrollbar-thumb:hover { background: #33405f; }

/* ── 背景氛围层：深海光场（顶部海面透光 + 两侧冷光 + 上浮气泡） ── */
.bg-fx {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background:
    radial-gradient(1300px 600px at 50% -12%, rgba(140, 170, 255, 0.2), transparent 66%),
    radial-gradient(1000px 700px at 8% -8%, rgba(64, 98, 255, 0.15), transparent 62%),
    radial-gradient(950px 620px at 92% -6%, rgba(255, 122, 26, 0.1), transparent 60%),
    linear-gradient(180deg, #0a1322 0%, #071019 46%, #05070d 100%);
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(95px);
  opacity: 0.5;
  animation: glow-drift 14s ease-in-out infinite alternate;
}
.glow-blue { width: 560px; height: 560px; left: -160px; top: -140px; background: rgba(72, 108, 255, 0.34); }
.glow-orange { width: 520px; height: 520px; right: -150px; top: -90px; background: rgba(255, 122, 26, 0.26); animation-delay: -7s; }

@keyframes glow-drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(40px, 30px, 0) scale(1.08); }
}

/* 海面透下的光柱：缓慢摇摆，很淡 */
.light-rays {
  position: absolute;
  inset: -12% -6% 34% -6%;
  pointer-events: none;
  background:
    radial-gradient(1200px 520px at 50% -10%, rgba(150, 185, 255, 0.13), transparent 70%),
    linear-gradient(112deg, transparent 40%, rgba(150, 185, 255, 0.05) 46%, transparent 54%),
    linear-gradient(98deg, transparent 58%, rgba(150, 185, 255, 0.04) 65%, transparent 73%),
    linear-gradient(121deg, transparent 24%, rgba(150, 185, 255, 0.035) 31%, transparent 39%);
  filter: blur(6px);
  transform-origin: top center;
  animation: rays-sway 19s ease-in-out infinite alternate;
}

@keyframes rays-sway {
  from { transform: rotate(-1.1deg); }
  to { transform: rotate(1.1deg); }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.024) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(920px 640px at 50% 0%, #000 28%, transparent 76%);
  mask-image: radial-gradient(920px 640px at 50% 0%, #000 28%, transparent 76%);
}

/* 气泡/浮游光点：锚定整个文档（随页面滚动），全页分布；卡片为实心底，泡泡只在缝隙可见 */
.particles { position: absolute; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.particle {
  position: absolute;
  display: block;
  border-radius: 50%;
  pointer-events: none;
  animation: bubble-rise linear infinite;
}
.p-blue { background: rgba(150, 180, 255, 0.8); box-shadow: 0 0 8px rgba(130, 160, 255, 0.65); }
.p-white { background: rgba(218, 232, 252, 0.72); box-shadow: 0 0 7px rgba(205, 222, 250, 0.6); }
.p-gold { background: rgba(255, 200, 120, 0.82); box-shadow: 0 0 8px rgba(255, 180, 100, 0.65); }

/* 空心环形态：透明芯 + 亮边 + 内外辉光，像真的气泡 */
.p-blue.ring {
  background: rgba(150, 180, 255, 0.07);
  border: 1px solid rgba(175, 200, 255, 0.85);
  box-shadow: 0 0 8px rgba(130, 160, 255, 0.5), inset 0 0 5px rgba(150, 180, 255, 0.45);
}
.p-white.ring {
  background: rgba(218, 232, 252, 0.06);
  border: 1px solid rgba(225, 236, 252, 0.8);
  box-shadow: 0 0 7px rgba(205, 222, 250, 0.45), inset 0 0 4px rgba(218, 232, 252, 0.4);
}
.p-gold.ring {
  background: rgba(255, 200, 120, 0.07);
  border: 1px solid rgba(255, 208, 140, 0.85);
  box-shadow: 0 0 8px rgba(255, 180, 100, 0.5), inset 0 0 5px rgba(255, 200, 120, 0.45);
}

@keyframes bubble-rise {
  0% { transform: translate3d(0, 24vh, 0); opacity: 0; }
  10% { opacity: var(--po, 0.4); }
  82% { opacity: var(--po, 0.4); }
  100% { transform: translate3d(var(--dx, 8px), -16vh, 0); opacity: 0; }
}

.page { position: relative; z-index: 1; }

/* ── 按钮 ─────────────────────────────────────────── */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-lg { padding: 14px 27px; font-size: 15.5px; border-radius: 15px; }
.btn-sm { padding: 9px 17px; font-size: 13.5px; border-radius: 11px; }
.btn-block { width: 100%; }

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #6a8dff, #5a63f5);
  box-shadow: 0 10px 28px rgba(90, 99, 245, 0.36), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}
.btn-primary:hover { box-shadow: 0 16px 40px rgba(90, 99, 245, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.28); }

.btn-amber {
  color: #2a1503;
  background: linear-gradient(135deg, #ffb45e, #ff7a1a);
  box-shadow: 0 10px 28px rgba(255, 122, 26, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.45);
}
.btn-amber:hover { box-shadow: 0 16px 40px rgba(255, 122, 26, 0.48), inset 0 1px 0 rgba(255, 255, 255, 0.45); }

.btn-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line-strong);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.09); border-color: rgba(255, 255, 255, 0.28); }

/* 前往购买：钉在卡片底部 + 流光扫过，突出主 CTA */
.tokenplan-btn { overflow: hidden; margin-top: auto; }
.tokenplan-btn::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -70%;
  width: 45%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: skewX(-20deg);
  animation: btn-shine 3.4s ease-in-out infinite;
}

@keyframes btn-shine {
  0%, 55% { left: -70%; }
  100% { left: 140%; }
}

/* ── Nav ──────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: linear-gradient(180deg, rgba(5, 8, 16, 0.86), rgba(5, 8, 16, 0.55));
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-inner {
  max-width: 1240px;
  height: var(--nav-h);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 17.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.nav-brand img {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12), 0 4px 14px rgba(0, 0, 0, 0.5);
}
.nav-links { display: flex; align-items: center; gap: 28px; }
/* 仅普通链接用灰色；.btn 保持自身配色（否则会盖掉按钮白字） */
.nav-links a:not(.btn) { color: var(--muted); font-size: 14.5px; text-decoration: none; transition: color 0.2s ease; }
.nav-links a:not(.btn):hover { color: var(--text); }

/* ── Hero：三卡布局（占满一屏，内容垂直居中，首屏完整收尾） ── */
.hero {
  position: relative;
  max-width: 1240px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-h) + 40px) 24px 44px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items: stretch;
}

.hero-card {
  position: relative;
  padding: 34px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--card-hi), var(--card-lo));
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.42);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
.hero-download:hover,
.hero-remote:hover {
  transform: translateY(-4px);
  border-color: rgba(122, 160, 255, 0.42);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5), 0 0 60px rgba(106, 141, 255, 0.18);
}
.hero-token:hover { transform: translateY(-4px); }

/* 主题区（卡片外）：品牌 + 一句话 */
.hero-head { position: relative; text-align: center; margin-bottom: 46px; }

.hero-kicker {
  display: inline-block;
  padding: 6px 15px;
  border-radius: 999px;
  border: 1px solid rgba(122, 160, 255, 0.32);
  background: rgba(122, 160, 255, 0.1);
  color: var(--blue-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.hero-head h1 {
  margin: 22px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(44px, 4.8vw, 64px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: #dce7ff;
  text-shadow: 0 0 48px rgba(122, 160, 255, 0.4);
}

.hero-slogan { font-size: 19px; font-weight: 600; color: #c9d4ec; letter-spacing: 0.01em; }

.hero-desc { margin: 16px auto 0; max-width: 640px; color: var(--muted); font-size: 15px; line-height: 1.9; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-actions.center { justify-content: center; }

/* 卡一：下载客户端（蓝调，实心底） */
.hero-download {
  text-align: center;
  border-color: rgba(122, 160, 255, 0.28);
  background: linear-gradient(180deg, #1e2a4e, #0d1322);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.46), 0 0 54px rgba(106, 141, 255, 0.13);
}

/* 卡三：远程连接（与下载卡同构，文字居中） */
.hero-remote { text-align: center; }

/* 叠层 App 图标 */
.stack-art {
  position: relative;
  width: 168px;
  height: 152px;
  margin: 8px auto 22px;
}
.stack-art .layer {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 124px;
  height: 124px;
  border-radius: 30px;
  border: 1px solid rgba(122, 160, 255, 0.26);
  background: linear-gradient(160deg, rgba(122, 160, 255, 0.1), rgba(255, 138, 42, 0.05));
}
.stack-art .l-back { transform: translate(-50%, -50%) rotate(7deg) translateX(17px); opacity: 0.6; }
.stack-art .l-mid { transform: translate(-50%, -50%) rotate(-8deg) translateX(-17px); opacity: 0.8; }

.app-tile {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 112px;
  height: 112px;
  transform: translate(-50%, -50%);
  border-radius: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(150deg, #1c2544, #0f1526);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.55), 0 0 52px rgba(106, 141, 255, 0.26);
  animation: float-soft 6s ease-in-out infinite;
}
.app-tile img {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  filter: drop-shadow(0 6px 18px rgba(106, 141, 255, 0.45));
}

/* 远程卡图标错开相位 + 略不同周期，避免左右两张卡同步起伏 */
.hero-remote .app-tile {
  animation-duration: 7.2s;
  animation-delay: -2.8s;
}

/* 远程连接卡：同款叠层，图标换成"电脑 + 手机"设备图形 */
.remote-tile svg {
  width: 54px;
  height: 54px;
  color: #9dc8f5;
  filter: drop-shadow(0 0 12px rgba(120, 190, 255, 0.5));
}
/* 信号脉冲：一圈圈向外扩散，暗示"连接中" */
.remote-tile::before {
  content: "";
  position: absolute;
  inset: -9px;
  border-radius: 34px;
  border: 1px solid rgba(120, 190, 255, 0.3);
  animation: echo-pulse 3.2s ease-out infinite;
}

@keyframes echo-pulse {
  0% { transform: scale(0.96); opacity: 0.8; }
  100% { transform: scale(1.2); opacity: 0; }
}

/* 悬浮呼吸：首尾同值，循环无缝（否则会瞬移抖动） */
@keyframes float-soft {
  0%, 100% { transform: translate(-50%, -50%); }
  50% { transform: translate(-50%, -53.5%); }
}

.dl-title { font-family: var(--font-display); font-size: 25px; font-weight: 700; letter-spacing: -0.01em; }
.dl-sub { margin: 8px 0 20px; color: var(--muted); font-size: 14px; }
.dl-note { margin-top: 14px; color: var(--muted-2); font-size: 12.5px; letter-spacing: 0.02em; }

/* 下载卡「更多下载平台」次级链接（滚到下载区自选） */
.dl-more {
  display: inline-block;
  margin-top: 20px;
  font-size: 13.5px;
  color: var(--blue-soft);
  text-decoration: none;
  opacity: 0.85;
  transition: opacity 0.2s ease;
}
.dl-more:hover { opacity: 1; text-decoration: underline; }

/* 右卡：Token Plan — 黑金卡（暗金玻璃底 + 金色渐变描边 + 呼吸光晕） */
.hero-token {
  display: flex;
  flex-direction: column;
  text-align: center;
  overflow: visible;
  border-color: rgba(255, 184, 77, 0.3);
  background: linear-gradient(180deg, #271e11, #130f09);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.42), 0 0 54px rgba(255, 150, 40, 0.15);
}
.hero-token::before {
  content: "";
  position: absolute;
  right: -70px;
  top: -60px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 150, 45, 0.2), transparent 66%);
  pointer-events: none;
  animation: glow-breathe 3.8s ease-in-out infinite alternate;
}
/* 金色渐变描边 */
.hero-token::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(
    160deg,
    rgba(255, 226, 160, 0.85),
    rgba(255, 165, 55, 0.2) 28%,
    rgba(255, 205, 115, 0.6) 52%,
    rgba(255, 150, 40, 0.18) 78%,
    rgba(255, 226, 160, 0.8)
  );
  -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;
}

@keyframes glow-breathe {
  from { opacity: 0.55; }
  to { opacity: 1; }
}

/* 斜向流光：每 5.5s 从左上扫到右下 */
.card-shine {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  overflow: hidden;
  pointer-events: none;
}
.card-shine::before {
  content: "";
  position: absolute;
  top: -60%;
  bottom: -60%;
  left: -80%;
  width: 52%;
  background: linear-gradient(
    100deg,
    transparent,
    rgba(255, 205, 130, 0.12) 35%,
    rgba(255, 236, 190, 0.22) 50%,
    rgba(255, 205, 130, 0.12) 65%,
    transparent
  );
  transform: rotate(12deg);
  animation: card-sheen 5.5s ease-in-out infinite;
}

@keyframes card-sheen {
  0%, 58% { left: -80%; }
  100% { left: 145%; }
}

/* 星点：四角星光（凹边菱形 ✦），原地缩放呼吸，不旋转 */
.spark {
  position: absolute;
  z-index: 1;
  width: 18px;
  height: 18px;
  opacity: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, #fff8e8 0%, #ffe3ac 38%, rgba(255, 200, 120, 0) 74%);
  clip-path: polygon(50% 0%, 59% 41%, 100% 50%, 59% 59%, 50% 100%, 41% 59%, 0% 50%, 41% 41%);
  filter: drop-shadow(0 0 6px rgba(255, 214, 150, 0.9));
  animation: twinkle 3.2s ease-in-out infinite;
}
.spark.s1 { left: 13%; top: 17%; }
.spark.s2 { right: 11%; top: 34%; animation-delay: 1.1s; width: 14px; height: 14px; }
.spark.s3 { left: 19%; bottom: 21%; animation-delay: 2.2s; width: 12px; height: 12px; }

@keyframes twinkle {
  0%, 100% { opacity: 0; transform: scale(0.2); }
  45% { opacity: 0.95; transform: scale(1); }
  70% { opacity: 0.25; transform: scale(0.55); }
}

/* 「Token Plan」字标即图标：竖向渐变模拟宣传图的金属字（竖向无横向割裂） */
.tp-logo { position: relative; margin: 26px auto 22px; line-height: 1.1; }
.tp-logo::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 240px;
  height: 100px;
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(255, 170, 60, 0.22), transparent);
  pointer-events: none;
}
.tp-logo-text {
  position: relative;
  font-family: var(--font-display);
  font-size: 46px;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
  background: linear-gradient(180deg, #fff3d0 6%, #ffcf7a 44%, #e0921f 80%, #b06a0d);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 6px 26px rgba(255, 160, 50, 0.35));
}

.token-sub { margin: 0 0 18px; color: var(--muted); font-size: 14.5px; }
.token-sub strong { color: var(--orange-soft); font-weight: 700; }

.token-list {
  list-style: none;
  padding: 0;
  margin: 16px 0 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}
.token-list li {
  position: relative;
  padding-left: 26px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}
.token-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--orange-soft), var(--orange));
  box-shadow: 0 0 12px rgba(255, 138, 42, 0.5);
}

/* 亮点速览条 */
.hero-checks {
  position: relative;
  margin-top: 26px;
  padding: 20px 30px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #121828, #0b0f1b);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px 38px;
}
.check { display: inline-flex; align-items: center; gap: 10px; font-size: 14.5px; font-weight: 500; color: #ccd7ee; }
.check .tick {
  width: 21px;
  height: 21px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  color: var(--blue-soft);
  background: rgba(122, 160, 255, 0.12);
  border: 1px solid rgba(122, 160, 255, 0.35);
}
.check .tick svg { width: 11px; height: 11px; }

/* ── 通用 Section ─────────────────────────────────── */
.section { max-width: 1240px; margin: 0 auto; padding: 96px 24px 8px; }

.section-head { text-align: center; }

.section-head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.sub { max-width: 660px; margin: 0 auto; color: var(--muted); font-size: 16px; line-height: 1.85; }

/* ── 核心功能卡片 ─────────────────────────────────── */
.features {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.card {
  position: relative;
  overflow: hidden;
  padding: 26px 24px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--card-hi), var(--card-lo));
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px 170px at 50% -50px, rgba(122, 160, 255, 0.13), transparent 70%);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}
.card:hover {
  transform: translateY(-5px);
  border-color: rgba(122, 160, 255, 0.34);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.46);
}
.card:hover::before { opacity: 1; }

.card-icon {
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
}
.card-icon svg { width: 22px; height: 22px; }
.card-icon.purple { color: #a78bfa; background: rgba(139, 92, 246, 0.12); border-color: rgba(139, 92, 246, 0.3); }
.card-icon.green { color: var(--green); background: rgba(61, 220, 151, 0.1); border-color: rgba(61, 220, 151, 0.28); }
.card-icon.amber { color: var(--orange-soft); background: rgba(255, 160, 60, 0.1); border-color: rgba(255, 160, 60, 0.28); }

.card h3 { margin-bottom: 10px; font-size: 17px; font-weight: 700; letter-spacing: -0.01em; }
.card p { color: var(--muted); font-size: 14px; line-height: 1.8; }

/* ── 下载区 ───────────────────────────────────────── */
.dl-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 22px;
  align-items: stretch;
}

.dl-tiles {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  padding: 30px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--card-hi), var(--card-lo));
}

.dl-tile {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 22px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  text-decoration: none;
  transition: transform 0.28s ease, border-color 0.28s ease, background 0.28s ease, box-shadow 0.28s ease;
}
.dl-tile:hover {
  transform: translateY(-3px);
  border-color: rgba(122, 160, 255, 0.4);
  background: rgba(122, 160, 255, 0.07);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.4);
}

.dl-tile-icon {
  width: 52px;
  height: 52px;
  flex: none;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-soft);
  background: rgba(122, 160, 255, 0.12);
  border: 1px solid rgba(122, 160, 255, 0.3);
}
.dl-tile-icon.android { color: #8ee6b0; background: rgba(61, 220, 151, 0.1); border-color: rgba(61, 220, 151, 0.3); }
.dl-tile-icon.linux { color: var(--orange-soft); background: rgba(255, 160, 60, 0.1); border-color: rgba(255, 160, 60, 0.28); }
.dl-tile-icon svg { width: 26px; height: 26px; }

.dl-tile-body { flex: 1; min-width: 0; }
.dl-tile-body strong { display: block; font-size: 16.5px; font-weight: 700; }
.dl-tile-body em { display: block; margin-top: 4px; color: var(--muted); font-size: 13.5px; font-style: normal; }

.dl-tile-arrow { color: var(--muted-2); transition: transform 0.25s ease, color 0.25s ease; }
.dl-tile-arrow svg { width: 20px; height: 20px; }
.dl-tile:hover .dl-tile-arrow { transform: translateX(4px); color: var(--blue-soft); }

.dl-tip { margin-top: 6px; color: var(--muted-2); font-size: 13px; text-align: center; }

.dl-qr-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 30px 26px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--card-hi), var(--card-lo));
  text-align: center;
}

.android-qr { display: inline-block; text-decoration: none; }
.android-qr-box {
  min-width: 154px;
  min-height: 154px;
  padding: 12px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}
.android-qr-box:empty::after { content: "二维码生成中…"; color: #8a93a8; font-size: 12.5px; }
.android-qr[data-ready="1"]:hover .android-qr-box { transform: translateY(-3px) scale(1.02); box-shadow: 0 20px 44px rgba(0, 0, 0, 0.55), 0 0 24px rgba(122, 160, 255, 0.25); }
.android-qr-box img, .android-qr-box canvas { display: block; }

.dl-qr-title { margin-top: 16px; font-size: 15.5px; font-weight: 700; }
.dl-qr-desc { color: var(--muted); font-size: 13px; }

/* ── 快速上手 ─────────────────────────────────────── */
.workflow {
  position: relative;
  margin-top: 52px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
/* 步骤连接线 */
.workflow::before {
  content: "";
  position: absolute;
  top: 33px;
  left: 14%;
  right: 14%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(122, 160, 255, 0.35), rgba(255, 154, 60, 0.35), transparent);
}

.workflow-step { position: relative; padding: 0 14px; text-align: center; }
.num {
  width: 66px;
  height: 66px;
  margin: 0 auto 18px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(150deg, rgba(122, 160, 255, 0.26), rgba(106, 141, 255, 0.07));
  border: 1px solid rgba(122, 160, 255, 0.36);
  box-shadow: 0 12px 32px rgba(106, 141, 255, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.18);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
/* 末步换橙色，与 Token Plan 呼应 */
.workflow-step:nth-child(3) .num {
  background: linear-gradient(150deg, rgba(255, 180, 94, 0.24), rgba(255, 122, 26, 0.07));
  border-color: rgba(255, 154, 60, 0.38);
  box-shadow: 0 12px 32px rgba(255, 122, 26, 0.16), inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.workflow-step h3 { margin-bottom: 10px; font-size: 17px; font-weight: 700; }
.workflow-step p { color: var(--muted); font-size: 14px; line-height: 1.8; }

/* ── 适用场景 ─────────────────────────────────────── */
.scenarios {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.scenario {
  padding: 32px 26px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--card-hi), var(--card-lo));
  text-align: center;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
.scenario:hover {
  transform: translateY(-5px);
  border-color: rgba(122, 160, 255, 0.34);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.46);
}
.scenario .emoji {
  font-size: 40px;
  line-height: 1;
  margin-bottom: 16px;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.45));
}
.scenario h3 { margin-bottom: 10px; font-size: 17px; font-weight: 700; }
.scenario p { color: var(--muted); font-size: 14px; line-height: 1.8; }

/* ── 详细介绍 ─────────────────────────────────────── */
.intro-lead { max-width: 780px; margin: 34px auto 0; display: flex; flex-direction: column; gap: 16px; }
.intro-lead p { color: var(--muted); font-size: 15.5px; line-height: 2.05; }

.intro-grid {
  max-width: 1080px;
  margin: 42px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.intro-item {
  padding: 24px 26px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #131a2b, #0c101c);
  transition: border-color 0.3s ease, background 0.3s ease;
}
.intro-item:hover { border-color: rgba(122, 160, 255, 0.3); background: linear-gradient(180deg, #16203a, #0e1424); }
.intro-item h4 { margin-bottom: 10px; font-size: 15.5px; font-weight: 700; }
.intro-item p { color: var(--muted); font-size: 14px; line-height: 1.9; }

.intro-close {
  max-width: 720px;
  margin: 40px auto 0;
  color: #c9d4ec;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.9;
  text-align: center;
}

/* ── CTA ──────────────────────────────────────────── */
.cta { max-width: 1240px; margin: 0 auto; padding: 96px 24px 110px; }

.cta-panel {
  position: relative;
  overflow: hidden;
  padding: 72px 32px;
  border-radius: 30px;
  border: 1px solid rgba(122, 160, 255, 0.22);
  background:
    linear-gradient(160deg, rgba(106, 141, 255, 0.16), rgba(255, 138, 42, 0.1) 58%, rgba(255, 255, 255, 0.04)),
    linear-gradient(180deg, #121a2e, #0b101d);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.46);
  text-align: center;
}
.cta-panel::before,
.cta-panel::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.cta-panel::before { width: 380px; height: 380px; left: -110px; top: -160px; background: rgba(106, 141, 255, 0.28); }
.cta-panel::after { width: 340px; height: 340px; right: -100px; bottom: -150px; background: rgba(255, 122, 26, 0.22); }

.cta-panel h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: -0.02em; }
.cta-panel p { margin: 14px 0 32px; color: var(--muted); font-size: 16px; }
.cta-panel .hero-actions { position: relative; z-index: 1; justify-content: center; }

/* ── Footer ───────────────────────────────────────── */
footer {
  padding: 34px 24px 44px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--muted-2);
  font-size: 13px;
  text-align: center;
}
footer span { color: var(--muted); font-family: var(--font-mono); font-size: 12px; }

/* 键盘可达性：清晰的焦点态 */
:focus-visible { outline: 2px solid var(--blue-soft); outline-offset: 3px; border-radius: 6px; }

/* （滚动入场动画已整体移除：滑动时卡片闪现得不偿失，内容直接展示） */

/* ── 响应式 ───────────────────────────────────────── */
@media (max-width: 1120px) {
  /* 卡片组通栏，与亮点速览条同宽 */
  .hero-grid { grid-template-columns: 1fr; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .dl-grid { grid-template-columns: 1fr; }
  .workflow::before { display: none; }
  .intro-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-links { gap: 16px; }
  .nav-links a:not(.btn) { display: none; }

  /* 主题区收紧（左右留白 14px，卡片更宽） */
  /* 仍占满一屏防止下一节漏进首屏，但内容从顶部开始排（居中会在顶部留大空白） */
  .hero { min-height: 100vh; justify-content: flex-start; padding: calc(var(--nav-h) + 32px) 14px 28px; }
  .hero-head { margin-bottom: 18px; }
  .hero-kicker { font-size: 10px; padding: 5px 12px; }
  .hero-head h1 { font-size: 32px; margin: 10px 0 6px; }
  .hero-slogan { font-size: 14.5px; }
  .hero-desc { margin-top: 8px; font-size: 12.5px; line-height: 1.7; }
  .hero-grid { gap: 12px; grid-template-columns: 1fr 1fr; }

  /* Token Plan 通栏置顶（与上方文字对齐），下面两张卡横排并排 */
  .hero-token { order: -1; grid-column: 1 / -1; }
  /* 卡外装饰光晕会戳出屏幕右缘（左右晃的元凶），移动端关闭 */
  .hero-token::before { display: none; }

  /* 极紧凑卡片（隐藏叠层大图与脚注） */
  .hero-card { padding: 14px 16px; }
  .stack-art { display: none; }
  .dl-title { font-size: 17px; }
  .dl-sub { margin: 3px 0 10px; font-size: 12px; }
  .dl-note { display: none; }
  .btn-lg { padding: 10px 14px; font-size: 13.5px; border-radius: 11px; }

  /* Token Plan 卡紧凑化（置顶主卡，字号略大） */
  .tp-logo { margin: 0 auto 6px; }
  .tp-logo::before { display: none; }
  .tp-logo-text { font-size: 26px; }
  .token-sub { font-size: 12.5px; margin-bottom: 8px; }
  .token-list { gap: 5px; margin: 0 0 10px; }
  .token-list li { font-size: 11.5px; padding-left: 18px; line-height: 1.5; }
  .token-list li::before { width: 10px; height: 10px; top: 4px; left: 1px; }

  .hero-checks { gap: 10px 18px; padding: 12px 14px; margin-top: 16px; }
  .check { font-size: 12.5px; }
  .check .tick { width: 18px; height: 18px; }

  .section { padding: 72px 18px 4px; }
  .features { grid-template-columns: 1fr; }
  .scenarios { grid-template-columns: 1fr; }
  .workflow { grid-template-columns: 1fr; gap: 34px; }
  .dl-tiles { padding: 20px; }
  .cta { padding: 72px 18px 84px; }
  .cta-panel { padding: 52px 22px; }
  .hero-actions .btn { flex: 1 1 100%; }
}

/* ── 降低动效偏好 ── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}