/* =========================================================
   柠檬树下的猫 · AI Growth Lab
   设计系统：黑 / 蓝 / 金 —— 科技感 + 高级质感
   ========================================================= */

/* ---------- 1. Tokens ---------- */
:root {
  --bg: #05070d;
  --bg-soft: #080c15;
  --bg-deep: #03050a;

  --panel: rgba(13, 19, 31, 0.72);
  --panel-solid: #0b111c;
  --panel-hi: rgba(20, 28, 44, 0.9);

  --line: rgba(255, 255, 255, 0.075);
  --line-hi: rgba(255, 255, 255, 0.14);

  --gold: #e9c46a;
  --gold-lt: #f8ecc2;
  --gold-md: #d9b155;
  --gold-dk: #b9842f;

  --blue: #2f7bff;
  --blue-lt: #6aa9ff;
  --blue-dk: #1746a2;

  --text: #eaf0fb;
  --text-dim: #aab5c8;
  --muted: #7d889c;

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 28px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", "Cascadia Code", Consolas,
    "Courier New", monospace;

  --shadow-lg: 0 30px 80px -30px rgba(0, 0, 0, 0.9);
  --shadow-gold: 0 0 0 1px rgba(233, 196, 106, 0.28), 0 18px 60px -20px rgba(233, 196, 106, 0.28);
  --shadow-blue: 0 0 0 1px rgba(47, 123, 255, 0.25), 0 18px 60px -20px rgba(47, 123, 255, 0.35);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --maxw: 1200px;
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.2; letter-spacing: -0.02em; font-weight: 700; }
p { margin: 0; }
::selection { background: rgba(233, 196, 106, 0.28); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #05070d; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #253043, #141b28);
  border-radius: 10px;
  border: 2px solid #05070d;
}
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, #3a4a66, #1c2536); }

/* ---------- 3. 背景层 ---------- */
.bg-layers {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg-grid {
  position: absolute;
  inset: -10%;
  background-image:
    linear-gradient(to right, rgba(120, 150, 200, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 150, 200, 0.055) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 12%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 12%, #000 20%, transparent 78%);
  animation: gridDrift 40s linear infinite;
}

@keyframes gridDrift {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(68px, 68px, 0); }
}

.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.5;
}

.bg-glow--blue {
  width: 62vw;
  height: 62vw;
  top: -22vw;
  left: -14vw;
  background: radial-gradient(circle, rgba(35, 98, 220, 0.55), transparent 62%);
}

.bg-glow--gold {
  width: 46vw;
  height: 46vw;
  top: 6vw;
  right: -18vw;
  background: radial-gradient(circle, rgba(196, 152, 62, 0.32), transparent 64%);
}

.bg-noise {
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  z-index: 200;
  background: linear-gradient(90deg, var(--blue), var(--gold));
  box-shadow: 0 0 14px rgba(233, 196, 106, 0.6);
  transition: width 0.1s linear;
}

/* ---------- 4. 导航 ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease),
    border-color 0.4s var(--ease), padding 0.4s var(--ease);
  border-bottom: 1px solid transparent;
  padding: 14px 0;
}

.nav.is-scrolled {
  background: rgba(5, 7, 13, 0.82);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
  padding: 8px 0;
}

.nav__inner {
  max-width: none;
  width: 100%;
  margin: 0;
  padding: 0 clamp(20px, 4.2vw, 60px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }

.brand__mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(150deg, rgba(233, 196, 106, 0.16), rgba(47, 123, 255, 0.1));
  border: 1px solid rgba(233, 196, 106, 0.3);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 8px 24px -12px rgba(233, 196, 106, 0.5);
}
.brand__mark svg { width: 29px; height: 29px; }

.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__text strong { font-size: 17px; letter-spacing: 0.04em; font-weight: 600; }
.brand__text em {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--gold);
  opacity: 0.75;
  margin-top: 4px;
}

.nav__links { display: flex; align-items: center; gap: 6px; }

.nav__link {
  position: relative;
  padding: 11px 18px;
  font-size: 15.5px;
  color: var(--text-dim);
  border-radius: 8px;
  transition: color 0.3s var(--ease), background 0.3s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 5px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  transform: scaleX(0);
  transition: transform 0.35s var(--ease);
}
.nav__link:hover { color: var(--text); background: rgba(255, 255, 255, 0.035); }
.nav__link.is-active { color: var(--gold-lt); }
.nav__link.is-active::after { transform: scaleX(1); }

.nav__cta { margin-left: 14px; }

.nav__burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line-hi);
  padding: 11px 10px;
  flex-direction: column;
  justify-content: space-between;
}
.nav__burger span {
  display: block;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.35s var(--ease), opacity 0.25s var(--ease);
}
.nav__burger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 24px;
  border-radius: 11px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    background 0.35s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn:active { transform: translateY(1px) scale(0.99); }

.btn--gold {
  background: linear-gradient(120deg, #f6e3a8, #e9c46a 42%, #cfa04a);
  color: #1a1206;
  box-shadow: 0 10px 34px -12px rgba(233, 196, 106, 0.65),
    inset 0 1px 0 rgba(255, 255, 255, 0.55);
}
.btn--gold::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 20%, rgba(255, 255, 255, 0.6) 48%, transparent 68%);
  transform: translateX(-120%);
  transition: transform 0.8s var(--ease);
}
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 16px 44px -12px rgba(233, 196, 106, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.6); }
.btn--gold:hover::after { transform: translateX(120%); }

.btn--ghost {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line-hi);
  color: var(--text);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover {
  border-color: rgba(106, 169, 255, 0.55);
  background: rgba(47, 123, 255, 0.1);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 14px 40px -18px rgba(47, 123, 255, 0.7);
}

.btn--outline {
  border: 1px solid rgba(233, 196, 106, 0.4);
  color: var(--gold-lt);
  background: rgba(233, 196, 106, 0.05);
}
.btn--outline:hover { background: rgba(233, 196, 106, 0.12); border-color: var(--gold); }

.btn--sm { padding: 11px 22px; font-size: 14px; border-radius: 10px; }
.btn--full { width: 100%; }

.linklike {
  display: block;
  padding: 0;
  font-size: 13.5px;
  color: var(--muted);
  text-align: left;
  transition: color 0.25s var(--ease);
}
.linklike:hover { color: var(--gold); }

/* ---------- 6. Hero ---------- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 132px 0 96px;
  overflow: hidden;
}

.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.85; }

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 220px;
  background: linear-gradient(to bottom, transparent, var(--bg) 88%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 56px;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px 7px 11px;
  border-radius: 999px;
  border: 1px solid rgba(233, 196, 106, 0.25);
  background: rgba(233, 196, 106, 0.06);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--gold-lt);
  font-family: var(--font-mono);
}
.pill__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(233, 196, 106, 0.18), 0 0 12px var(--gold);
  animation: blink 2.4s ease-in-out infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.hero__title {
  font-size: clamp(2.5rem, 5.4vw, 4.25rem);
  line-height: 1.1;
  margin: 26px 0 22px;
  font-weight: 800;
  letter-spacing: -0.035em;
}

.grad-gold {
  background: linear-gradient(96deg, #fff8e2 0%, #f2d98d 32%, #e9c46a 58%, #c08f38 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  position: relative;
  filter: drop-shadow(0 6px 30px rgba(233, 196, 106, 0.28));
}

.hero__sub {
  font-size: clamp(1rem, 1.35vw, 1.1rem);
  color: var(--text-dim);
  max-width: 33em;
  line-height: 1.85;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 34px 0 44px; }

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.hero__stats li { display: flex; flex-direction: column; gap: 2px; }
.hero__stats b {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  background: linear-gradient(180deg, #fff, #a9b6cc);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.hero__stats span { font-size: 12px; color: var(--muted); letter-spacing: 0.12em; }

/* 终端 */
.hero__visual { position: relative; }

.terminal {
  position: relative;
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(17, 24, 38, 0.94), rgba(8, 12, 20, 0.96));
  border: 1px solid rgba(120, 150, 200, 0.16);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  overflow: hidden;
  backdrop-filter: blur(12px);
}
.terminal::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(140deg, rgba(233, 196, 106, 0.45), transparent 30%, transparent 70%, rgba(47, 123, 255, 0.45));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.02);
}
.dot { width: 9px; height: 9px; border-radius: 50%; }
.dot--r { background: #ff5f57; }
.dot--y { background: #febc2e; }
.dot--g { background: #28c840; }
.terminal__title {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.terminal__body {
  margin: 0;
  padding: 22px 20px 30px;
  font-family: var(--font-mono);
  font-size: 12.8px;
  line-height: 2;
  color: #c3cfe3;
  min-height: 300px;
  white-space: pre-wrap;
  word-break: break-word;
}
.terminal__body .t-cmd { color: var(--gold); }
.terminal__body .t-ok { color: #4ade80; }
.terminal__body .t-info { color: var(--blue-lt); }
.terminal__body .t-dim { color: #5c6879; }
.terminal__body .t-cursor {
  display: inline-block;
  width: 7px;
  height: 14px;
  background: var(--gold);
  vertical-align: -2px;
  animation: caret 1s steps(1) infinite;
}
@keyframes caret { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

.terminal__glow {
  position: absolute;
  width: 240px;
  height: 240px;
  right: -60px;
  bottom: -100px;
  background: radial-gradient(circle, rgba(47, 123, 255, 0.4), transparent 65%);
  filter: blur(30px);
  pointer-events: none;
}

.float-card {
  position: absolute;
  display: flex;
  flex-direction: column;
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(10, 15, 25, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 18px 50px -20px rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(14px);
  animation: floaty 6s ease-in-out infinite;
}
.float-card__k { font-size: 10.5px; color: var(--muted); letter-spacing: 0.1em; }
.float-card strong {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--gold-lt);
  line-height: 1.3;
}
.float-card strong span { font-size: 0.8rem; color: var(--muted); }
.float-card__s { font-size: 10.5px; color: var(--muted); }
.float-card--1 { top: 46%; left: -62px; animation-delay: -1s; }
.float-card--2 { bottom: -30px; right: -34px; animation-delay: -3.4s; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero__scroll {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.28em;
  color: var(--muted);
}
.hero__scroll i {
  width: 1px;
  height: 42px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  position: relative;
  overflow: hidden;
}
.hero__scroll i::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 12px;
  background: var(--gold-lt);
  animation: scrollLine 2.2s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { transform: translateY(-14px); opacity: 0; }
  40% { opacity: 1; }
  100% { transform: translateY(44px); opacity: 0; }
}

/* ---------- 7. Marquee ---------- */
.marquee {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.015);
  overflow: hidden;
  padding: 15px 0;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee__track {
  display: flex;
  align-items: center;
  gap: 34px;
  width: max-content;
  animation: marquee 34s linear infinite;
}
.marquee__track span {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: rgba(200, 214, 235, 0.5);
  text-transform: uppercase;
  white-space: nowrap;
}
.marquee__track i {
  width: 5px;
  height: 5px;
  background: var(--gold);
  transform: rotate(45deg);
  opacity: 0.7;
  flex-shrink: 0;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 8. Section 通用 ---------- */
.section {
  position: relative;
  z-index: 2;
  padding: clamp(76px, 9vw, 128px) 0;
}
.section--alt {
  background: linear-gradient(180deg, transparent, rgba(8, 12, 21, 0.75) 12%, rgba(8, 12, 21, 0.75) 88%, transparent);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.sec-head { max-width: 720px; margin-bottom: 52px; }

.sec-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--gold);
  margin-bottom: 18px;
}
.sec-label span {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 1px solid rgba(233, 196, 106, 0.35);
  background: rgba(233, 196, 106, 0.08);
  font-size: 10px;
  letter-spacing: 0;
  color: var(--gold-lt);
}
.sec-label::after {
  content: "";
  width: 46px;
  height: 1px;
  background: linear-gradient(90deg, rgba(233, 196, 106, 0.6), transparent);
}

.sec-title {
  font-size: clamp(1.75rem, 3.2vw, 2.6rem);
  font-weight: 750;
  letter-spacing: -0.035em;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
}
.sec-title__sub {
  font-size: clamp(0.8rem, 1.05vw, 0.95rem);
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.sec-desc {
  margin-top: 18px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.9;
  max-width: 46em;
}

.list-note {
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 9. 工具 ---------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 34px;
}
.filter {
  padding: 9px 17px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  font-size: 13px;
  color: var(--text-dim);
  transition: all 0.3s var(--ease);
}
.filter:hover { border-color: rgba(233, 196, 106, 0.4); color: var(--gold-lt); }
.filter.is-active {
  background: linear-gradient(120deg, rgba(233, 196, 106, 0.16), rgba(233, 196, 106, 0.06));
  border-color: rgba(233, 196, 106, 0.55);
  color: var(--gold-lt);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
  gap: 16px;
}

.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 20px;
  border-radius: var(--r-md);
  background: var(--panel);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform 0.45s var(--ease), border-color 0.45s var(--ease),
    box-shadow 0.45s var(--ease), background 0.45s var(--ease);
  animation: cardIn 0.5s var(--ease) both;
}
@keyframes cardIn {
  from { opacity: 0; transform: translateY(14px) scale(0.985); }
  to { opacity: 1; transform: none; }
}

.tool-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(47, 123, 255, 0.14), transparent 62%);
  opacity: 0;
  transition: opacity 0.45s var(--ease);
  pointer-events: none;
}
.tool-card:hover {
  transform: translateY(-4px);
  border-color: rgba(233, 196, 106, 0.34);
  box-shadow: 0 26px 60px -32px rgba(0, 0, 0, 0.95), 0 0 0 1px rgba(233, 196, 106, 0.12);
  background: var(--panel-hi);
}
.tool-card:hover::before { opacity: 1; }

.tool-card__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.tool-card__icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: linear-gradient(150deg, rgba(47, 123, 255, 0.22), rgba(47, 123, 255, 0.05));
  border: 1px solid rgba(106, 169, 255, 0.28);
  color: var(--blue-lt);
  flex-shrink: 0;
}
.tool-card__icon svg { width: 20px; height: 20px; }
.tool-card--gold .tool-card__icon {
  background: linear-gradient(150deg, rgba(233, 196, 106, 0.22), rgba(233, 196, 106, 0.04));
  border-color: rgba(233, 196, 106, 0.32);
  color: var(--gold-lt);
}

.tool-card__badge {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  padding: 4px 8px;
  border-radius: 5px;
  color: var(--gold-lt);
  background: rgba(233, 196, 106, 0.1);
  border: 1px solid rgba(233, 196, 106, 0.26);
  white-space: nowrap;
}

.tool-card__name { font-size: 16.5px; font-weight: 650; letter-spacing: -0.01em; }
.tool-card__desc { font-size: 13.3px; color: var(--muted); line-height: 1.75; flex: 1; }

.tool-card__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 13px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
  white-space: nowrap;
}
.tool-card__meta > span { white-space: nowrap; }
.tool-card__meta .sep { width: 3px; height: 3px; border-radius: 50%; background: #3a475c; flex-shrink: 0; }
.tool-card__link {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--blue-lt);
  white-space: nowrap;
  flex-shrink: 0;
  transition: gap 0.3s var(--ease), color 0.3s var(--ease);
}
.tool-card__link svg { width: 13px; height: 13px; }
.tool-card__link:hover { gap: 9px; color: #fff; }

.tool-card__free {
  color: #4ade80;
}
.tool-card__free.is-paid { color: var(--gold); }

/* ---------- 10. 网创项目 ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 18px;
}

.project-card {
  position: relative;
  padding: 26px 24px;
  border-radius: var(--r-lg);
  background: linear-gradient(165deg, rgba(16, 23, 37, 0.9), rgba(8, 12, 20, 0.92));
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform 0.45s var(--ease), border-color 0.45s var(--ease),
    box-shadow 0.45s var(--ease);
}
.project-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(233, 196, 106, 0.6), transparent);
  opacity: 0.4;
  transition: opacity 0.4s var(--ease);
}
.project-card:hover {
  transform: translateY(-5px);
  border-color: rgba(106, 169, 255, 0.3);
  box-shadow: 0 32px 70px -34px rgba(0, 0, 0, 0.95), 0 0 0 1px rgba(106, 169, 255, 0.1);
}
.project-card:hover::after { opacity: 1; }

.project-card__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.project-card__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(233, 196, 106, 0.7);
}
.project-card__tag {
  font-size: 11.5px;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--text-dim);
  border: 1px solid var(--line-hi);
  background: rgba(255, 255, 255, 0.03);
}
.project-card__title { font-size: 18px; font-weight: 650; margin-bottom: 10px; }
.project-card__desc { font-size: 13.4px; color: var(--muted); line-height: 1.8; min-height: 3.4em; }

.project-card__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 20px 0 16px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.project-card__metrics div { display: flex; flex-direction: column; gap: 3px; }
.project-card__metrics dt { font-size: 10.5px; color: var(--muted); letter-spacing: 0.08em; }
.project-card__metrics dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  font-weight: 600;
}
.project-card__metrics dd.is-gold { color: var(--gold-lt); }

.project-card__foot {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}
.diff { display: inline-flex; gap: 3px; align-items: center; margin-left: auto; }
.diff i {
  width: 14px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.12);
}
.diff i.on { background: linear-gradient(90deg, var(--blue), var(--gold)); }

.project-cta {
  margin-top: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 26px 30px;
  border-radius: var(--r-lg);
  border: 1px dashed rgba(233, 196, 106, 0.28);
  background: linear-gradient(120deg, rgba(233, 196, 106, 0.06), rgba(47, 123, 255, 0.05));
}
.project-cta strong { font-size: 16px; }
.project-cta p { font-size: 13.4px; color: var(--muted); margin-top: 4px; }

/* ---------- 11. Skill 下载 ---------- */
.skill-list { display: flex; flex-direction: column; gap: 10px; }

.skill-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1.6fr) minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 17px 26px 17px 22px;
  border-radius: 14px;
  background: rgba(13, 19, 31, 0.55);
  border: 1px solid var(--line);
  transition: all 0.4s var(--ease);
}
.skill-item:hover {
  background: rgba(20, 28, 44, 0.9);
  border-color: rgba(233, 196, 106, 0.3);
  transform: translateX(4px);
}

.skill-item__icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--line-hi);
  color: var(--gold);
}
.skill-item__icon svg { width: 20px; height: 20px; }

.skill-item__main { min-width: 0; }
.skill-item__name {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 15px;
  font-weight: 600;
  flex-wrap: wrap;
}
.skill-item__name .ver {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gold);
  background: rgba(233, 196, 106, 0.1);
  border: 1px solid rgba(233, 196, 106, 0.24);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 400;
}
.skill-item__desc { font-size: 12.6px; color: var(--muted); margin-top: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.skill-item__tags { display: flex; gap: 6px; flex-wrap: wrap; }
.skill-item__tags span {
  font-size: 11px;
  color: var(--text-dim);
  padding: 3px 8px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
}

.skill-item__act { display: flex; align-items: center; gap: 14px; }
.skill-item__stats {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--muted);
  text-align: right;
  line-height: 1.7;
  letter-spacing: 0.04em;
}
.skill-item__stats b { display: block; color: var(--text-dim); font-weight: 500; }

.btn-dl {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 15px;
  border-radius: 9px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--gold-lt);
  border: 1px solid rgba(233, 196, 106, 0.35);
  background: rgba(233, 196, 106, 0.07);
  transition: all 0.32s var(--ease);
  white-space: nowrap;
}
.btn-dl svg { width: 14px; height: 14px; }
.btn-dl:hover {
  background: linear-gradient(120deg, #f6e3a8, #e9c46a);
  color: #1a1206;
  border-color: transparent;
  box-shadow: 0 10px 26px -12px rgba(233, 196, 106, 0.8);
}

.skill-tip {
  margin-top: 26px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  border-radius: 12px;
  background: rgba(47, 123, 255, 0.05);
  border: 1px solid rgba(47, 123, 255, 0.16);
  color: var(--muted);
  font-size: 12.8px;
}
.skill-tip svg { width: 18px; height: 18px; color: var(--blue-lt); flex-shrink: 0; margin-top: 1px; }

/* ---------- 12. IP ---------- */
.ip-layout {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 32px;
  align-items: start;
}

.ip-steps { display: flex; flex-direction: column; gap: 0; position: relative; }

.ip-step {
  position: relative;
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 20px;
  padding: 0 0 34px;
}
.ip-step:last-child { padding-bottom: 0; }
.ip-step::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 56px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(to bottom, rgba(233, 196, 106, 0.35), rgba(47, 123, 255, 0.2), transparent);
}
.ip-step:last-child::before { display: none; }

.ip-step__num {
  width: 62px;
  height: 62px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  color: var(--gold-lt);
  background: linear-gradient(155deg, rgba(233, 196, 106, 0.14), rgba(47, 123, 255, 0.08));
  border: 1px solid rgba(233, 196, 106, 0.28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
  transition: all 0.4s var(--ease);
}
.ip-step:hover .ip-step__num {
  border-color: var(--gold);
  box-shadow: 0 0 0 4px rgba(233, 196, 106, 0.08), 0 14px 40px -16px rgba(233, 196, 106, 0.7);
  transform: translateY(-2px);
}

.ip-step__body { padding-top: 6px; }
.ip-step__title { font-size: 17.5px; font-weight: 650; margin-bottom: 7px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ip-step__title em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--blue-lt);
  border: 1px solid rgba(106, 169, 255, 0.3);
  background: rgba(47, 123, 255, 0.08);
  padding: 2px 7px;
  border-radius: 4px;
}
.ip-step__desc { font-size: 13.6px; color: var(--muted); line-height: 1.85; }
.ip-step__list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.ip-step__list li {
  font-size: 11.5px;
  color: var(--text-dim);
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--line);
}

.ip-aside { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 100px; }

.ip-card {
  padding: 26px 24px;
  border-radius: var(--r-lg);
  background: linear-gradient(170deg, rgba(233, 196, 106, 0.09), rgba(11, 17, 28, 0.9) 45%);
  border: 1px solid rgba(233, 196, 106, 0.22);
  box-shadow: var(--shadow-lg);
}
.ip-card h3 { font-size: 17px; }
.ip-card__sub { font-size: 12.5px; color: var(--muted); margin: 6px 0 18px; }

.check-list { display: flex; flex-direction: column; gap: 11px; margin-bottom: 22px; }
.check-list li {
  position: relative;
  padding-left: 24px;
  font-size: 12.8px;
  color: var(--text-dim);
  line-height: 1.7;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 4px;
  border: 1px solid rgba(233, 196, 106, 0.4);
  background: rgba(233, 196, 106, 0.06);
}
.check-list li::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 9px;
  width: 5px;
  height: 7px;
  border-right: 1.5px solid var(--gold);
  border-bottom: 1.5px solid var(--gold);
  transform: rotate(40deg);
}

.ip-quote {
  position: relative;
  padding: 24px 24px 22px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}
.ip-quote__mark {
  font-family: Georgia, serif;
  font-size: 46px;
  line-height: 0.6;
  color: rgba(233, 196, 106, 0.35);
  display: block;
  margin-bottom: 8px;
}
.ip-quote p { font-size: 13.4px; color: var(--text-dim); line-height: 1.9; }
.ip-quote__by {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* ---------- 13. 陪跑方案 ---------- */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  align-items: stretch;
}

.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 30px 24px;
  border-radius: var(--r-lg);
  background: var(--panel);
  border: 1px solid var(--line);
  transition: transform 0.45s var(--ease), border-color 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
.plan:hover { transform: translateY(-5px); border-color: var(--line-hi); }

.plan--featured {
  background: linear-gradient(175deg, rgba(233, 196, 106, 0.12), rgba(12, 18, 30, 0.95) 40%);
  border-color: rgba(233, 196, 106, 0.42);
  box-shadow: var(--shadow-gold), 0 40px 90px -50px rgba(0, 0, 0, 1);
}
.plan--featured:hover { transform: translateY(-8px); }

.plan__flag {
  position: absolute;
  top: -11px;
  left: 26px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  padding: 5px 11px;
  border-radius: 5px;
  background: linear-gradient(120deg, #f6e3a8, #e9c46a);
  color: #1a1206;
  font-weight: 700;
  box-shadow: 0 8px 22px -10px rgba(233, 196, 106, 0.9);
}

.plan__name { font-size: 18px; font-weight: 650; }
.plan__for { font-size: 12.4px; color: var(--muted); margin-top: 6px; min-height: 3.4em; }

.plan__price { display: flex; align-items: baseline; gap: 6px; margin: 18px 0 4px; }
.plan__price b {
  font-family: var(--font-mono);
  font-size: 1.95rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--gold-lt);
}
.plan__price span { font-size: 12px; color: var(--muted); }
.plan__price em { font-style: normal; font-size: 12.5px; color: var(--muted); text-decoration: line-through; margin-left: 4px; }
.plan__note {
  font-size: 11.5px;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  margin-top: 2px;
  min-height: 1.6em;
}

.plan__feats { display: flex; flex-direction: column; gap: 10px; margin: 20px 0 26px; flex: 1 0 auto; }
.plan__feats li {
  position: relative;
  padding-left: 22px;
  font-size: 12.9px;
  color: var(--text-dim);
  line-height: 1.65;
  flex-shrink: 0;
}
.plan__feats li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 7px;
  width: 4px;
  height: 8px;
  border-right: 1.5px solid var(--gold);
  border-bottom: 1.5px solid var(--gold);
  transform: rotate(40deg);
}
.plan__feats li.off { color: #566175; }
.plan__feats li.off::before { border-color: #4a5468; }

.flow { margin-top: 56px; }
.flow__title {
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--muted);
  font-weight: 400;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.flow__title::after { content: ""; flex: 1; height: 1px; background: var(--line); }

.flow__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.flow__list li {
  position: relative;
  padding: 20px 18px;
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  transition: all 0.4s var(--ease);
}
.flow__list li:hover { background: rgba(47, 123, 255, 0.06); border-color: rgba(106, 169, 255, 0.28); }
.flow__list b {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 8px;
}
.flow__list strong { display: block; font-size: 14px; margin-bottom: 5px; }
.flow__list span { font-size: 12.2px; color: var(--muted); line-height: 1.7; display: block; }

/* FAQ */
.faq { margin-top: 56px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.faq-item {
  border-radius: 13px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
  transition: border-color 0.35s var(--ease), background 0.35s var(--ease);
}
.faq-item.is-open { border-color: rgba(233, 196, 106, 0.28); background: rgba(233, 196, 106, 0.04); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 17px 20px;
  text-align: left;
  font-size: 13.8px;
  font-weight: 550;
  color: var(--text);
}
.faq-q i {
  position: relative;
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}
.faq-q i::before,
.faq-q i::after {
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}
.faq-q i::before { left: 0; top: 6.5px; width: 14px; height: 1.2px; }
.faq-q i::after { left: 6.5px; top: 0; width: 1.2px; height: 14px; }
.faq-item.is-open .faq-q i::after { transform: rotate(90deg); opacity: 0; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease);
}
.faq-a p { padding: 0 20px 18px; font-size: 12.9px; color: var(--muted); line-height: 1.85; }

/* ---------- 14. CTA ---------- */
.cta {
  position: relative;
  z-index: 2;
  padding: clamp(70px, 9vw, 120px) 0;
  overflow: hidden;
}
.cta__inner {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(40px, 6vw, 68px) 32px;
  text-align: center;
  border-radius: 30px;
  border: 1px solid rgba(233, 196, 106, 0.22);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(233, 196, 106, 0.14), transparent 62%),
    linear-gradient(180deg, rgba(14, 21, 35, 0.94), rgba(6, 9, 16, 0.96));
  box-shadow: 0 50px 120px -60px rgba(0, 0, 0, 1), inset 0 1px 0 rgba(255, 255, 255, 0.07);
  overflow: hidden;
}
.cta__inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000, transparent 75%);
  pointer-events: none;
}
.cta__glow {
  position: absolute;
  width: 380px;
  height: 380px;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(233, 196, 106, 0.4), transparent 66%);
  filter: blur(60px);
  pointer-events: none;
}
.cta h2 {
  position: relative;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 750;
  letter-spacing: -0.035em;
}
.cta p {
  position: relative;
  margin-top: 14px;
  color: var(--text-dim);
  font-size: 14.5px;
}
.cta__actions {
  position: relative;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin: 32px 0 20px;
}
.cta__note {
  position: relative;
  font-family: var(--font-mono);
  font-size: 10.5px !important;
  letter-spacing: 0.14em;
  color: var(--muted) !important;
}

/* ---------- 15. Footer ---------- */
.footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(4, 6, 11, 0.6), rgba(3, 5, 9, 0.95));
  padding: 56px 0 0;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.1fr 1.4fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer__brand strong { font-size: 17px; letter-spacing: 0.02em; }
.footer__brand p { margin-top: 12px; font-size: 13px; color: var(--muted); line-height: 1.9; }

.footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer__col { display: flex; flex-direction: column; gap: 11px; }
.footer__col h4 {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--gold);
  font-weight: 400;
  margin-bottom: 4px;
}
.footer__col a, .footer__col .linklike { font-size: 13px; color: var(--muted); transition: color 0.25s var(--ease); }
.footer__col a:hover { color: var(--gold-lt); }

.footer__bottom {
  border-top: 1px solid var(--line);
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 11.5px;
  color: #5d6879;
  letter-spacing: 0.04em;
}
.footer__icp a { color: #6d788a; border-bottom: 1px dashed #333d4e; }
.footer__icp a:hover { color: var(--gold); border-color: var(--gold); }

/* ---------- 16. To top ---------- */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 26px;
  z-index: 90;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: rgba(13, 19, 31, 0.88);
  border: 1px solid rgba(233, 196, 106, 0.28);
  color: var(--gold-lt);
  backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.4s var(--ease);
}
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: rgba(233, 196, 106, 0.14); border-color: var(--gold); box-shadow: 0 14px 36px -18px rgba(233, 196, 106, 0.8); }
.to-top svg { width: 19px; height: 19px; }

/* ---------- 17. Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
  will-change: transform, opacity;
}
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- 18. Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  z-index: 300;
  transform: translate(-50%, 20px);
  padding: 12px 22px;
  border-radius: 11px;
  background: rgba(18, 25, 40, 0.96);
  border: 1px solid rgba(233, 196, 106, 0.4);
  color: var(--gold-lt);
  font-size: 13px;
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.9);
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s var(--ease);
}
.toast.is-show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1080px) {
  .hero__inner { grid-template-columns: 1fr; gap: 64px; }
  .hero__visual { max-width: 520px; }
  .ip-layout { grid-template-columns: 1fr; }
  .ip-aside { position: static; flex-direction: row; }
  .ip-aside > * { flex: 1; }
  .plan-grid { grid-template-columns: repeat(2, 1fr); }
  .faq { grid-template-columns: 1fr; }
  .flow__list { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr; gap: 34px; }
}

@media (max-width: 860px) {
  .nav__links {
    position: fixed;
    top: 0;
    right: 0;
    height: 100svh;
    width: min(320px, 82vw);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 6px;
    padding: 96px 22px 32px;
    background: rgba(6, 9, 16, 0.97);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--line);
    transform: translateX(100%);
    transition: transform 0.45s var(--ease);
    z-index: 99;
  }
  .nav__links.is-open { transform: none; }
  .nav__link { padding: 15px 12px; font-size: 15px; border-bottom: 1px solid rgba(255,255,255,0.05); }
  .nav__link::after { display: none; }
  .nav__cta { margin-top: 18px; margin-left: 0; padding: 13px; }
  .nav__burger { display: flex; }

  .skill-item {
    grid-template-columns: 40px 1fr;
    gap: 14px 14px;
    padding: 18px;
  }
  .skill-item__tags { grid-column: 2; }
  .skill-item__act { grid-column: 2; justify-content: space-between; width: 100%; }
  .skill-item__stats { text-align: left; }

  .project-grid { grid-template-columns: 1fr; }
  .ip-aside { flex-direction: column; }
  .float-card--1 { display: none; }
  .float-card--2 { right: -8px; bottom: -22px; }
  .hero__stats { gap: 24px; }
  .project-cta { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .nav__inner { padding: 0 18px; }
  .hero { padding-top: 112px; }
  .hero__actions .btn { flex: 1 1 100%; }
  .hero__stats b { font-size: 1.35rem; }
  .flow__list { grid-template-columns: 1fr; }
  .plan-grid { grid-template-columns: 1fr; }
  .terminal__body { font-size: 11.6px; padding: 18px 16px 24px; }
  .skill-item__name { font-size: 14px; }
  .section { padding: 64px 0; }
  .cta__inner { padding: 38px 20px; border-radius: 22px; }
  .to-top { right: 16px; bottom: 18px; }
  .footer__cols { grid-template-columns: 1fr 1fr; }
}

@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;
  }
  .reveal { opacity: 1; transform: none; }
}