/* NoCompile 主页：「闪电热替换」——电光黄 + 紫色霓虹，深色为主视觉，浅色完整适配 */
:root {
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "PingFang SC", "PingFang TC", "Hiragino Sans GB", "Microsoft YaHei", "Microsoft JhengHei", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "PingFang SC", monospace;
  --r: 18px;
  --wrap: 1160px;
  --ease: cubic-bezier(.2, .8, .2, 1);
}
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #08070f;
  --bg-2: #100d1f;
  --surface: rgba(255, 255, 255, .035);
  --surface-2: rgba(255, 255, 255, .06);
  --line: rgba(196, 170, 255, .14);
  --text: #f4f1ff;
  --muted: #aaa3c9;
  --volt: #ffe14d;
  --volt-deep: #ffbf1a;
  --on-volt: #1b1400;
  --neon: #a855f7;
  --neon-2: #7c3aed;
  --hi: #ffe14d;          /* 正文中的强调色 */
  --grid: rgba(168, 85, 247, .09);
  --glow-a: rgba(124, 58, 237, .38);
  --glow-b: rgba(255, 214, 10, .13);
  --ed-bg: #0e0c1a;
  --ed-bar: #161328;
  --ed-ln: #4c4670;
  --ed-text: #e7e3ff;
  --c-k: #d29bff;
  --c-t: #7dd3fc;
  --c-f: #86efac;
  --c-s: #ffe14d;
  --c-p: #f5a8ff;
  --c-cm: #6e6894;
  --ph-bezel: #1b1830;
  --ph-bg: #0d0c14;
  --ph-text: #f5f3ff;
  --ph-muted: rgba(255, 255, 255, .14);
  --shadow: 0 30px 80px -30px rgba(0, 0, 0, .8);
}
html[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f5fd;
  --bg-2: #efe9ff;
  --surface: #ffffff;
  --surface-2: #f4f0ff;
  --line: rgba(60, 30, 130, .14);
  --text: #17112e;
  --muted: #564e78;
  --volt: #ffd60a;
  --volt-deep: #f5b700;
  --on-volt: #1b1400;
  --neon: #7c3aed;
  --neon-2: #6d28d9;
  --hi: #6d28d9;
  --grid: rgba(109, 40, 217, .07);
  --glow-a: rgba(124, 58, 237, .2);
  --glow-b: rgba(255, 214, 10, .28);
  --ed-bg: #ffffff;
  --ed-bar: #f3f0fb;
  --ed-ln: #a9a3c4;
  --ed-text: #1d1838;
  --c-k: #9b2393;
  --c-t: #0b4f79;
  --c-f: #1f7a5a;
  --c-s: #a35200;
  --c-p: #8a1fa3;
  --c-cm: #8a85a3;
  --ph-bezel: #24203a;
  --ph-bg: #f6f5fb;
  --ph-text: #15121f;
  --ph-muted: rgba(20, 10, 60, .09);
  --shadow: 0 30px 70px -32px rgba(60, 30, 130, .45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
html:lang(en) body { line-height: 1.6; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
code, kbd { font-family: var(--mono); font-size: .88em; }
p code, li code, h3 code {
  padding: .1em .38em;
  border-radius: 6px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  overflow-wrap: anywhere;
}
kbd {
  display: inline-block;
  padding: .05em .45em;
  border-radius: 7px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  background: var(--surface-2);
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 99; padding: 8px 14px; background: var(--volt); color: var(--on-volt); border-radius: 8px; }
.skip:focus { left: 12px; }
:focus-visible { outline: 2px solid var(--neon); outline-offset: 3px; border-radius: 6px; }

/* ===== 页头 ===== */
.top {
  position: sticky; top: 0; z-index: 30;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--line);
}
.top-in { display: flex; align-items: center; gap: 20px; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; letter-spacing: -.01em; font-size: 17px; }
.brand img { border-radius: 8px; }
.nav { display: flex; gap: 4px; margin-left: 12px; }
.nav a { text-decoration: none; color: var(--muted); font-size: 14.5px; padding: 6px 12px; border-radius: 999px; transition: color .2s, background-color .2s; }
.nav a:hover { color: var(--text); background: var(--surface-2); }
.ctrls { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.seg { display: inline-flex; padding: 3px; gap: 2px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); }
.seg button {
  appearance: none; border: 0; background: transparent; color: var(--muted);
  font: 600 12.5px/1 var(--sans); min-width: 30px; height: 28px; padding: 0 8px; border-radius: 999px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: color .2s, background-color .2s;
}
.seg button:hover { color: var(--text); }
.seg button[aria-pressed="true"] { background: var(--volt); color: var(--on-volt); }
.seg svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.gh { display: inline-flex; width: 34px; height: 34px; align-items: center; justify-content: center; border-radius: 999px; border: 1px solid var(--line); color: var(--text); transition: transform .2s var(--ease); }
.gh:hover { transform: translateY(-1px) rotate(-6deg); }
.gh svg { width: 17px; height: 17px; fill: currentColor; }

/* ===== 首屏 ===== */
.hero { position: relative; padding: 34px 0 36px; isolation: isolate; }
.hero::before {
  /* 霓虹网格背景 */
  content: ""; position: absolute; inset: 0; z-index: -2;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 35%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 35%, #000 30%, transparent 75%);
}
.hero::after {
  content: ""; position: absolute; inset: -10% -10% 0; z-index: -1;
  background:
    radial-gradient(42% 46% at 18% 18%, var(--glow-a), transparent 70%),
    radial-gradient(32% 40% at 82% 62%, var(--glow-b), transparent 70%);
  pointer-events: none;
}
.hero-copy { display: grid; grid-template-columns: 1.35fr 1fr; gap: 12px 56px; align-items: end; }
.eyebrow {
  grid-column: 1 / -1; margin: 0 0 6px; display: inline-flex; align-items: center; gap: 10px; justify-self: start;
  font: 600 12.5px/1 var(--mono); letter-spacing: .04em; color: var(--muted);
  padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface);
}
.pip { width: 8px; height: 8px; border-radius: 50%; background: var(--volt); box-shadow: 0 0 0 0 var(--volt); animation: pip 2.4s infinite; }
@keyframes pip { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--volt) 70%, transparent); } 70%, 100% { box-shadow: 0 0 0 9px transparent; } }
h1 {
  grid-row: 2 / span 3; margin: 0; font-size: clamp(34px, 4.6vw, 60px); line-height: 1.08; letter-spacing: -.035em; font-weight: 850;
}
html:lang(en) h1 { letter-spacing: -.04em; font-size: clamp(32px, 3.9vw, 50px); }
h1 kbd {
  font-size: .62em; vertical-align: .12em; padding: .08em .32em; border-radius: .22em;
  color: var(--on-volt); background: var(--volt); border: 0;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--volt-deep) 80%, #000), 0 .12em 0 var(--volt-deep), 0 0 34px color-mix(in srgb, var(--volt) 55%, transparent);
}
h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--neon) 0%, #d06bff 45%, var(--volt) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
html[data-theme="light"] h1 em { background: linear-gradient(100deg, #6d28d9 0%, #a21caf 55%, #c26a00 100%); -webkit-background-clip: text; background-clip: text; }
.lede { margin: 0; color: var(--muted); font-size: 17px; max-width: 520px; }
.hero-copy .lede { align-self: end; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.cta.center { justify-content: center; }
.btn {
  position: relative; overflow: hidden; display: inline-flex; align-items: center; gap: 10px;
  padding: 11px 20px 11px 16px; border-radius: 14px; text-decoration: none; line-height: 1.2;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.btn b { display: block; font-size: 15px; }
.btn small { display: block; font: 500 11.5px/1.3 var(--mono); opacity: .72; }
.btn svg { width: 22px; height: 22px; fill: currentColor; flex: none; }
.btn-volt { background: var(--volt); color: var(--on-volt); box-shadow: 0 10px 30px -10px color-mix(in srgb, var(--volt) 80%, transparent), inset 0 -2px 0 var(--volt-deep); }
.btn-volt::after {
  /* 悬停时一道高光扫过 */
  content: ""; position: absolute; inset: 0; transform: translateX(-120%) skewX(-20deg);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .75), transparent);
  transition: transform .6s var(--ease);
}
.btn-volt:hover::after { transform: translateX(120%) skewX(-20deg); }
.btn-ghost { padding-left: 20px; border: 1px solid color-mix(in srgb, var(--neon) 55%, transparent); color: var(--text); background: color-mix(in srgb, var(--neon) 9%, transparent); }
.btn:hover { transform: translateY(-2px); }
.btn-ghost:hover { box-shadow: 0 0 0 1px var(--neon), 0 10px 30px -12px var(--neon); }
.meta { margin: 4px 0 0; color: var(--muted); font-size: 13.5px; }
.ver { font-family: var(--mono); color: var(--hi); text-decoration: none; font-weight: 600; }
.ver:hover { text-decoration: underline; }

/* 演示舞台 */
.stage {
  position: relative; margin: 30px auto 0; max-width: 1040px;
  display: grid; grid-template-columns: minmax(0, 1fr) 250px; gap: clamp(40px, 9vw, 130px); align-items: center;
}
.bolt { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 5; }
.editor {
  position: relative; border-radius: 16px; overflow: hidden; background: var(--ed-bg);
  border: 1px solid var(--line); box-shadow: var(--shadow), 0 0 0 1px color-mix(in srgb, var(--neon) 18%, transparent);
}
.ed-bar { display: flex; align-items: center; gap: 7px; height: 40px; padding: 0 14px; background: var(--ed-bar); border-bottom: 1px solid var(--line); }
.ed-bar > i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.ed-bar > i:nth-child(2) { background: #febc2e; }
.ed-bar > i:nth-child(3) { background: #28c840; }
.ed-tab { margin-left: 12px; display: inline-flex; align-items: center; gap: 8px; font: 500 12.5px/1 var(--mono); color: var(--ed-text); opacity: .9; white-space: nowrap; overflow: hidden; }
.sw { font-size: 10px; padding: 3px 6px; border-radius: 5px; background: #f05138; color: #fff; }
.dirty { width: 7px; height: 7px; border-radius: 50%; background: var(--ed-text); opacity: 0; transition: opacity .15s; }
.dirty.on { opacity: .8; }
.keycap {
  margin-left: auto; font: 700 12px/1 var(--mono); padding: 6px 9px; border-radius: 7px;
  background: var(--volt); color: var(--on-volt);
  box-shadow: 0 2px 0 var(--volt-deep), 0 0 22px color-mix(in srgb, var(--volt) 70%, transparent);
  opacity: 0; transform: translateY(4px) scale(.8); transition: opacity .18s, transform .25s var(--ease);
}
.keycap.on { opacity: 1; transform: none; }
.keycap.press { transform: translateY(2px) scale(.94); }
.ed-code {
  margin: 0; padding: 16px 18px 14px 0; font: 14px/1.75 var(--mono); color: var(--ed-text);
  white-space: pre; overflow: hidden;
}
.ed-code .ln { display: inline-block; width: 44px; padding-right: 16px; text-align: right; color: var(--ed-ln); user-select: none; }
.k { color: var(--c-k); font-weight: 600; }
.t { color: var(--c-t); }
.f { color: var(--c-f); }
.s { color: var(--c-s); }
.p { color: var(--c-p); }
.cm { color: var(--c-cm); font-style: italic; }
.v { position: relative; }
.v.typing::after {
  content: ""; position: absolute; right: -2px; top: .1em; bottom: .1em; width: 2px; background: var(--volt);
  animation: caret .8s steps(1) infinite;
}
@keyframes caret { 50% { opacity: 0; } }
.v.hot { text-shadow: 0 0 14px color-mix(in srgb, var(--volt) 90%, transparent); }
.ed-log {
  display: flex; align-items: center; gap: 6px; height: 38px; padding: 0 16px; border-top: 1px solid var(--line);
  font: 500 12.5px/1 var(--mono); color: var(--c-f); background: color-mix(in srgb, var(--ed-bar) 60%, transparent);
  opacity: 0; transition: opacity .3s;
  white-space: nowrap; overflow: hidden;
}
.ed-log.on { opacity: 1; }
.logtext { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.bolt-ic { color: var(--volt); filter: drop-shadow(0 0 6px var(--volt)); }
html[data-theme="light"] .bolt-ic { filter: none; }

.phone { position: relative; justify-self: center; width: 250px; }
.ph-frame {
  position: relative; padding: 10px; border-radius: 44px; background: var(--ph-bezel);
  box-shadow: var(--shadow), 0 0 0 1px rgba(255, 255, 255, .08), 0 0 60px -10px color-mix(in srgb, var(--neon) 60%, transparent);
}
.ph-screen {
  position: relative; overflow: hidden; height: 430px; border-radius: 35px; background: var(--ph-bg); color: var(--ph-text);
  padding: 14px 18px 18px; display: flex; flex-direction: column; gap: 12px;
  transition: transform .45s var(--ease);
}
.ph-screen.hit { transform: scale(.975); transition-duration: .08s; }
.ph-status { display: flex; align-items: center; justify-content: space-between; font: 650 13px/1 var(--sans); padding: 2px 6px 6px; }
.ph-island { width: 74px; height: 22px; border-radius: 999px; background: #000; }
.ph-bat { width: 22px; height: 11px; border-radius: 3px; border: 1.5px solid currentColor; opacity: .8; }
.ph-small { margin: 4px 0 -10px; font-size: 12px; font-weight: 600; opacity: .5; }
.ph-title { margin: 0; font-size: 25px; line-height: 1.15; font-weight: 800; letter-spacing: -.02em; min-height: 58px; }
.ph-card {
  position: relative; height: 112px; border-radius: 20px; padding: 16px; display: flex; flex-direction: column; justify-content: space-between;
  background: linear-gradient(135deg, #6e5cff, #4f3fd6); color: #fff;
}
.ph-card[data-c="yellow"] { background: linear-gradient(135deg, #ffe14d, #ffb800); color: #2a1d00; box-shadow: 0 10px 40px -10px rgba(255, 200, 0, .7); }
.ph-card svg { width: 30px; height: 30px; fill: currentColor; }
.ph-lines { display: grid; gap: 7px; }
.ph-lines i { display: block; height: 8px; border-radius: 4px; background: currentColor; opacity: .5; width: 70%; }
.ph-lines i + i { width: 45%; opacity: .32; }
.ph-rows { display: grid; gap: 9px; }
.ph-rows i { display: block; height: 34px; border-radius: 12px; background: var(--ph-muted); }
.ph-btn {
  margin-top: auto; display: block; text-align: center; padding: 12px; border-radius: 14px; font-weight: 700; font-size: 15px;
  background: #4f3fd6; color: #fff;
}
.ph-btn.alt { background: #16121f; color: #ffe14d; }
html[data-theme="light"] .ph-btn.alt { background: #16121f; }
.ph-flash {
  position: absolute; inset: 0; pointer-events: none; opacity: 0;
  background: radial-gradient(circle at 50% 40%, rgba(255, 250, 210, .95), rgba(255, 225, 77, .55) 40%, rgba(168, 85, 247, .25) 70%, transparent);
}
.ph-flash.on { opacity: 1; transition: none; }
.ph-flash.off { opacity: 0; transition: opacity .55s ease-out; }
.timer {
  position: absolute; right: -34px; top: 54px; z-index: 6;
  display: inline-flex; align-items: center; gap: 4px; padding: 8px 14px; border-radius: 999px;
  font: 800 18px/1 var(--mono); letter-spacing: -.02em;
  background: #120f22; color: #ffe14d; border: 1px solid rgba(255, 225, 77, .5);
  box-shadow: 0 0 0 4px rgba(255, 225, 77, .08), 0 12px 30px -8px rgba(255, 200, 0, .45);
  opacity: 0; transform: translateY(6px) scale(.9); transition: opacity .2s, transform .35s var(--ease);
}
.timer.on { opacity: 1; transform: none; }
.timer.pop { transform: scale(1.12); }
.t-ic { font-size: 15px; }
.stage-note { margin: 22px auto 0; max-width: 1040px; text-align: center; font-size: 12.5px; color: var(--muted); }

/* ===== 通用分区 ===== */
.sec { padding: 96px 0 0; }
.kicker { margin: 0 0 10px; font: 700 12.5px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--hi); }
h2 { margin: 0; font-size: clamp(28px, 3.6vw, 44px); line-height: 1.15; letter-spacing: -.03em; font-weight: 820; }
.sub { margin: 14px 0 0; max-width: 720px; color: var(--muted); font-size: 16.5px; }
h3 { margin: 0 0 6px; font-size: 18px; letter-spacing: -.01em; }

/* 流水线 */
.flow-wrap { position: relative; margin: 44px 0 0; }
.flow {
  position: relative; list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px;
}
.track {
  /* 连线：一颗电光沿流水线奔跑，只动 transform */
  position: absolute; left: 10%; right: 10%; top: 27px; height: 2px; overflow: hidden;
  background: linear-gradient(90deg, var(--neon), var(--volt));
}
.runner { position: absolute; inset: 0; transform: translateX(-100%); animation: run 2.6s var(--ease) infinite; }
.runner::after {
  content: ""; position: absolute; right: 0; top: -1px; width: 90px; height: 4px; border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--volt) 70%, #fff);
  box-shadow: 0 0 14px 2px color-mix(in srgb, var(--volt) 70%, transparent);
}
@keyframes run { 0% { transform: translateX(-100%); } 100% { transform: translateX(0); } }
.flow li { position: relative; display: grid; justify-items: center; text-align: center; gap: 10px; }
.flow b {
  position: relative; z-index: 1; display: inline-flex; align-items: center; justify-content: center; min-width: 56px; height: 56px; padding: 0 14px;
  font: 700 14px/1 var(--mono); border-radius: 16px; background: var(--bg); color: var(--text);
  border: 1px solid color-mix(in srgb, var(--neon) 50%, transparent);
  box-shadow: 0 0 0 5px var(--bg), 0 0 26px -6px var(--neon);
}
.flow li:first-child b { background: var(--volt); color: var(--on-volt); border-color: transparent; }
.flow span { font-size: 14px; color: var(--muted); max-width: 200px; text-wrap: balance; }
.layers { margin-top: 36px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.layers div { padding: 16px 18px; border-radius: 14px; border: 1px dashed var(--line); background: var(--surface); display: grid; gap: 4px; }
.layers code { color: var(--hi); font-weight: 700; font-size: 14px; }
.layers span { font-size: 14px; color: var(--muted); }

/* 特性卡片 */
.grid { margin-top: 40px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card {
  position: relative; overflow: hidden; padding: 24px; border-radius: var(--r);
  background: var(--surface); border: 1px solid var(--line);
  transition: transform .35s var(--ease), border-color .3s;
}
.card.wide { grid-column: span 2; }
.card.full { grid-column: 1 / -1; }
.card::before {
  /* 跟随指针的霓虹光斑，位置用 transform 移动 */
  content: ""; position: absolute; left: 0; top: 0; width: 320px; height: 320px; margin: -160px 0 0 -160px; border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--neon) 26%, transparent), transparent 65%);
  transform: translate(var(--mx, -400px), var(--my, -400px)); opacity: 0; transition: opacity .3s; pointer-events: none;
}
.card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--neon) 50%, transparent); }
.card:hover::before { opacity: 1; }
.card > * { position: relative; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.chips span { font: 600 13px/1 var(--mono); padding: 8px 12px; border-radius: 999px; border: 1px solid color-mix(in srgb, var(--volt) 55%, var(--line)); color: var(--text); background: color-mix(in srgb, var(--volt) 9%, transparent); }

/* 截图 */
.shot { margin: 40px 0 0; padding: 10px; border-radius: 22px; border: 1px solid var(--line); background: linear-gradient(140deg, color-mix(in srgb, var(--neon) 24%, transparent), transparent 40%, color-mix(in srgb, var(--volt) 20%, transparent)); }
.shot img { display: block; width: 100%; border-radius: 14px; }

/* 接入 */
.step { margin-top: 32px; padding: 26px; border-radius: var(--r); border: 1px solid var(--line); background: var(--surface); }
.step-h { display: flex; gap: 16px; }
.step-h p { margin: 0; color: var(--muted); font-size: 15px; }
.num { flex: none; width: 34px; height: 34px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; font: 800 16px/1 var(--mono); background: var(--volt); color: var(--on-volt); }
.code { position: relative; margin-top: 14px; border-radius: 12px; background: var(--ed-bg); border: 1px solid var(--line); }
.code pre { margin: 0; padding: 14px 92px 14px 16px; overflow-x: auto; font: 13.5px/1.65 var(--mono); color: var(--ed-text); }
.copy {
  position: absolute; top: 8px; right: 8px; appearance: none; cursor: pointer;
  font: 600 12px/1 var(--sans); padding: 8px 12px; border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--neon) 45%, transparent); background: var(--ed-bar); color: var(--text);
  transition: transform .2s var(--ease), background-color .2s, color .2s;
}
.copy:hover { transform: translateY(-1px); }
.copy.done { background: var(--volt); color: var(--on-volt); border-color: transparent; }
.tabs { margin: 18px 0 0; display: flex; flex-wrap: wrap; gap: 6px; padding: 5px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--line); }
.tabs button {
  appearance: none; border: 0; cursor: pointer; background: transparent; color: var(--muted);
  font: 650 14px/1 var(--sans); padding: 11px 14px; border-radius: 10px; display: inline-flex; align-items: center; gap: 8px;
  transition: color .2s, background-color .2s;
}
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] { background: var(--bg); color: var(--text); box-shadow: 0 0 0 1px color-mix(in srgb, var(--neon) 55%, transparent), 0 6px 20px -10px var(--neon); }
.rec { font-size: 11px; padding: 3px 7px; border-radius: 6px; background: color-mix(in srgb, var(--volt) 22%, transparent); color: var(--text); }
.panel { padding-top: 6px; }
.panel > p { margin: 16px 0 0; color: var(--muted); font-size: 15px; }
.panel .note { font-size: 14px; padding-left: 12px; border-left: 3px solid var(--volt); }
.more { margin: 22px 0 0; }
.more a { color: var(--hi); font-weight: 600; text-decoration: none; }
.more a:hover { text-decoration: underline; }

/* 下载 */
.dl { padding-bottom: 96px; }
.dl-box {
  position: relative; overflow: hidden; text-align: center; padding: 56px 28px; border-radius: 28px;
  border: 1px solid color-mix(in srgb, var(--neon) 40%, transparent);
  background:
    radial-gradient(60% 80% at 50% 0%, color-mix(in srgb, var(--neon) 26%, transparent), transparent 70%),
    radial-gradient(40% 50% at 50% 110%, color-mix(in srgb, var(--volt) 22%, transparent), transparent 70%),
    var(--bg-2);
}
.dl-box img { border-radius: 22px; filter: drop-shadow(0 12px 30px color-mix(in srgb, var(--neon) 60%, transparent)); }
.dl-box h2 { margin-top: 14px; }
.dl-box > p { margin: 12px auto 0; max-width: 620px; color: var(--muted); }
.dl-box .cta { margin-top: 24px; }
.fine { font-size: 13.5px; }
.fine a { color: var(--hi); }

/* 页脚 */
.foot { border-top: 1px solid var(--line); padding: 28px 0 40px; }
.foot-in { display: flex; align-items: center; flex-wrap: wrap; gap: 14px 28px; }
.foot-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.foot-brand img { border-radius: 7px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: 14px; }
.foot-links a { color: var(--muted); text-decoration: none; }
.foot-links a:hover { color: var(--text); }
.copy-r { margin: 0 0 0 auto; color: var(--muted); font-size: 13.5px; }

.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 50; padding: 10px 18px; border-radius: 999px;
  background: var(--volt); color: var(--on-volt); font-weight: 700; font-size: 14px;
  opacity: 0; transform: translate(-50%, 12px); transition: opacity .2s, transform .3s var(--ease); pointer-events: none;
}
.toast.on { opacity: 1; transform: translate(-50%, 0); }

/* 滚动渐入（仅在 JS 可用时隐藏） */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 1020px) {
  .nav { display: none; }
  .hero-copy { grid-template-columns: 1fr; }
  h1 { grid-row: auto; }
  .stage { grid-template-columns: minmax(0, 1fr) 220px; gap: 56px; }
  .phone { width: 220px; }
  .ph-screen { height: 440px; }
  .timer { right: -14px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .card.wide { grid-column: auto; }
}
@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .top-in { gap: 10px; height: 56px; }
  .brand span { display: none; }
  .ctrls { gap: 6px; }
  .seg button { min-width: 27px; padding: 0 6px; height: 26px; }
  .hero { padding-top: 28px; }
  .eyebrow { font-size: 11px; letter-spacing: 0; }
  .lede { font-size: 16px; }
  .btn { flex: 1 1 100%; }
  .stage { grid-template-columns: 1fr; gap: 64px; margin-top: 32px; }
  .ed-code { font-size: 10.6px; padding: 12px 10px 10px 0; }
  .ed-code .ln { width: 28px; padding-right: 9px; }
  .ed-tab { font-size: 11.5px; }
  .phone { width: 210px; }
  .ph-screen { height: 400px; padding: 12px 14px 14px; gap: 11px; }
  .ph-title { font-size: 21px; min-height: 48px; }
  .ph-card { height: 104px; }
  .timer { right: -64px; top: 40px; font-size: 16px; }
  .sec { padding-top: 72px; }
  .flow { grid-template-columns: 1fr; gap: 18px; }
  .track { left: 27px; right: auto; top: 28px; bottom: 28px; width: 2px; height: auto; background: linear-gradient(180deg, var(--neon), var(--volt)); }
  .runner { transform: translateY(-100%); animation-name: run-y; }
  .runner::after { right: auto; left: -1px; top: auto; bottom: 0; width: 4px; height: 70px; background: linear-gradient(180deg, transparent, var(--volt) 70%, #fff); }
  .flow li { grid-template-columns: auto 1fr; justify-items: start; text-align: left; align-items: center; gap: 14px; }
  .flow b { min-width: 56px; font-size: 12.5px; padding: 0 8px; }
  .flow span { max-width: none; }
  .layers { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .card.wide { grid-column: auto; }
  .step { padding: 18px 14px; }
  .step-h { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 10px 12px; }
  .step-h > div { display: contents; }
  .step-h h3 { margin: 0; }
  .step-h p { grid-column: 1 / -1; }
  .code pre { padding-right: 16px; padding-top: 44px; font-size: 12.5px; }
  .tabs button { flex: 1 1 calc(50% - 6px); justify-content: center; padding: 11px 8px; font-size: 13.5px; }
  .dl-box { padding: 40px 18px; }
  .copy-r { margin-left: 0; }
}
@keyframes run-y { 0% { transform: translateY(-100%); } 100% { transform: translateY(0); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
}