/* =========================================================
   云岚 CloudLoom — 站点样式表
   变量 → 基础 → 导航 → 区块 → 组件 → 动效 → 响应式
   ========================================================= */

/* ---------- 主题变量 ---------- */
:root {
  --bg: #0b0f19;
  --bg-soft: #111726;
  --surface: rgba(255, 255, 255, .04);
  --surface-hi: rgba(255, 255, 255, .07);
  --border: rgba(255, 255, 255, .09);
  --text: #e7ebf3;
  --muted: #8e99ad;
  --accent: #6366f1;
  --accent-2: #22d3ee;
  --accent-3: #f472b6;
  --ok: #34d399;
  --shadow: 0 18px 50px -20px rgba(0, 0, 0, .75);
  --radius: 16px;
  --container: 1140px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
}

[data-theme="light"] {
  --bg: #f7f8fc;
  --bg-soft: #ffffff;
  --surface: rgba(15, 23, 42, .03);
  --surface-hi: rgba(15, 23, 42, .06);
  --border: rgba(15, 23, 42, .1);
  --text: #0f172a;
  --muted: #5b6577;
  --shadow: 0 18px 45px -22px rgba(15, 23, 42, .35);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  letter-spacing: .01em;
  overflow-x: hidden;
  transition: background .3s ease, color .3s ease;
}

h1, h2, h3, h4 { line-height: 1.22; margin: 0 0 .6em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.2rem, 6vw, 3.9rem); font-weight: 800; }
h2 { font-size: clamp(1.55rem, 3.6vw, 2.3rem); font-weight: 750; }
h3 { font-size: 1.05rem; font-weight: 650; }
h4 { font-size: .9rem; font-weight: 650; }
p  { margin: 0 0 1em; }
a  { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; }

code {
  font-family: var(--mono);
  font-size: .875em;
  background: var(--surface-hi);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .12em .42em;
}

.container {
  width: min(calc(100% - 3rem), var(--container));
  margin-inline: auto;
}

.muted { color: var(--muted); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 100;
  padding: .6rem 1rem;
  border-radius: 0 0 10px 10px;
  background: var(--accent);
  color: #fff;
  transition: top .2s ease;
}

.skip-link:focus { top: 0; }

/* ---------- 背景光斑 ---------- */
.orbs {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .5;
  animation: float 20s ease-in-out infinite;
}

.orb--1 { width: 46vw; height: 46vw; background: var(--accent);   top: -14vw; left: -8vw; }
.orb--2 { width: 34vw; height: 34vw; background: var(--accent-2); top: 22vh;  right: -10vw; animation-delay: -7s; }
.orb--3 { width: 30vw; height: 30vw; background: var(--accent-3); bottom: -10vw; left: 22vw; animation-delay: -14s; opacity: .3; }

[data-theme="light"] .orb { opacity: .26; }

@keyframes float {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50%      { transform: translate3d(2vw, -3vh, 0) scale(1.08); }
}

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: .7rem 0;
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease;
}

.nav.is-scrolled {
  background: rgba(11, 15, 25, .78);              /* 不支持 color-mix 时的回退 */
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(1.5);
  backdrop-filter: blur(14px) saturate(1.5);
  border-bottom-color: var(--border);
}

[data-theme="light"] .nav.is-scrolled { background: rgba(247, 248, 252, .78); }

.nav__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-weight: 700;
  letter-spacing: -.01em;
  white-space: nowrap;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 22px -10px var(--accent);
  flex: none;
}

.brand__mark svg { width: 19px; height: 19px; }
.brand__text em { font-style: normal; color: var(--muted); font-weight: 500; margin-left: .35rem; font-size: .88em; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.55rem;
  margin-left: auto;
  font-size: .93rem;
}

.nav__links a {
  position: relative;
  color: var(--muted);
  transition: color .2s ease;
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}

.nav__links a:hover,
.nav__links a.is-active { color: var(--text); }
.nav__links a:hover::after,
.nav__links a.is-active::after { transform: scaleX(1); }

.nav__cta-link { display: none; }

.nav__actions { display: flex; align-items: center; gap: .5rem; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 11px;
  color: var(--text);
  background: var(--surface);
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}

.icon-btn:hover { background: var(--surface-hi); transform: translateY(-1px); }
.icon-btn svg { width: 18px; height: 18px; }

[data-theme="dark"] .i-sun { display: none; }
[data-theme="light"] .i-moon { display: none; }

.menu-btn { display: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .78rem 1.5rem;
  font: inherit;
  font-size: .95rem;
  font-weight: 550;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .2s ease, box-shadow .25s ease, background .2s ease, border-color .2s ease;
}

.btn svg { width: 17px; height: 17px; }
.btn:active { transform: scale(.99); }
.btn--sm { padding: .55rem 1.05rem; font-size: .88rem; border-radius: 10px; }
.btn--block { width: 100%; }

.btn--primary {
  color: #fff;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  box-shadow: 0 14px 34px -16px var(--accent);
}

.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 20px 40px -16px var(--accent); }

.btn--ghost {
  color: var(--text);
  background: var(--surface);
  border-color: var(--border);
}

.btn--ghost:hover { background: var(--surface-hi); transform: translateY(-2px); }

/* ---------- Hero ---------- */
.hero {
  padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(2.5rem, 6vw, 4rem);
  text-align: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin: 0 0 1.5rem;
  padding: .38rem .95rem;
  font-size: .82rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  flex: none;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 70%, transparent); }
  70%  { box-shadow: 0 0 0 9px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.grad {
  background: linear-gradient(100deg, var(--accent) 8%, var(--accent-2) 48%, var(--accent-3) 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__title { margin-bottom: 1.1rem; }

.hero__desc {
  max-width: 42rem;
  margin: 0 auto 2rem;
  font-size: clamp(1rem, 1.6vw, 1.13rem);
  color: var(--muted);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .8rem;
  margin-bottom: 1.1rem;
}

.hero__note { font-size: .85rem; color: var(--muted); margin-bottom: 3rem; }

/* ---------- 终端 / 构建日志卡片 ---------- */
.terminal {
  max-width: 46rem;
  margin: 0 auto;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-soft) 88%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .7rem .9rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.tl { width: 11px; height: 11px; border-radius: 50%; flex: none; }
.tl--r { background: #ff5f57; }
.tl--y { background: #febc2e; }
.tl--g { background: #28c840; }

.terminal__title {
  margin-left: .6rem;
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.copy {
  margin-left: auto;
  flex: none;
  padding: .25rem .7rem;
  font: inherit;
  font-size: .74rem;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 7px;
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.copy:hover { color: var(--text); background: var(--surface-hi); }
.copy.is-done { color: var(--ok); border-color: var(--ok); }

.terminal__body {
  margin: 0;
  padding: 1.1rem 1.25rem 1.35rem;
  font-family: var(--mono);
  font-size: .84rem;
  line-height: 1.9;
  overflow-x: auto;
}

.terminal__body code { background: none; border: 0; padding: 0; white-space: pre; }

.c-dim { color: var(--muted); }
.c-ok  { color: var(--ok); }
.c-sh  { color: var(--accent); }
.c-key { color: var(--accent-2); }
.c-num { color: var(--accent-3); }

.caret {
  display: inline-block;
  width: 8px;
  height: 1.05em;
  margin-left: .2rem;
  vertical-align: -.18em;
  background: var(--accent-2);
  animation: blink 1.05s steps(1) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

/* ---------- 客户背书的文字 logo 墙 ---------- */
.logos { padding: 1.5rem 0 1rem; text-align: center; }

.logos__title {
  font-size: .84rem;
  color: var(--muted);
  margin-bottom: 1.4rem;
}

.logos__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1rem 3rem;
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: .06em;
  color: var(--muted);
}

.logos__row span {
  opacity: .62;
  transition: opacity .25s ease, color .25s ease;
}

.logos__row span:hover { opacity: 1; color: var(--text); }

/* ---------- 通用区块 ---------- */
.section { padding: clamp(3rem, 8vw, 5.5rem) 0; }

.section__head {
  max-width: 42rem;
  margin: 0 auto clamp(2rem, 4vw, 3rem);
  text-align: center;
}

.section__head p:last-child { margin-bottom: 0; }

.eyebrow {
  margin: 0 0 .6rem;
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .22em;
  color: var(--accent-2);
}

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 1.1rem; }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(268px, 1fr)); }

.card {
  position: relative;
  padding: 1.6rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: transform .28s ease, border-color .28s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), color-mix(in srgb, var(--accent) 16%, transparent), transparent 62%);
  opacity: 0;
  transition: opacity .3s ease;
  pointer-events: none;
}

.card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 38%, var(--border)); }
.card:hover::before { opacity: 1; }

.card__icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: .9rem;
  font-size: 1.2rem;
  border-radius: 12px;
  background: var(--surface-hi);
  border: 1px solid var(--border);
}

.card h3 { margin-bottom: .4rem; }
.card p  { margin: 0; font-size: .93rem; color: var(--muted); }

/* ---------- 数据 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1rem;
  padding: 1.2rem;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  background: var(--surface);
}

.stat {
  padding: 1.3rem 1rem;
  text-align: center;
  border-radius: var(--radius);
  transition: background .25s ease;
}

.stat:hover { background: var(--surface-hi); }

.stat__num {
  display: block;
  font-size: clamp(1.8rem, 4.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -.03em;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-variant-numeric: tabular-nums;
}

.stat__label { font-size: .85rem; color: var(--muted); }

/* ---------- 定价 ---------- */
.switch {
  display: flex;
  width: fit-content;
  gap: .3rem;
  margin: 0 auto 2.4rem;
  padding: .3rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

.switch__btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem 1.15rem;
  font: inherit;
  font-size: .88rem;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: background .2s ease, color .2s ease;
}

.switch__btn em {
  font-style: normal;
  font-size: .72rem;
  padding: .1rem .4rem;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
}

.switch__btn:hover { color: var(--text); }
.switch__btn.is-active { color: #fff; background: linear-gradient(120deg, var(--accent), var(--accent-2)); }
.switch__btn.is-active em { background: rgba(255, 255, 255, .24); }

.price-grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: start;
}

.price {
  position: relative;
  padding: 1.8rem 1.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: transform .28s ease, border-color .28s ease;
}

.price:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 34%, var(--border)); }

.price--popular {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  background: color-mix(in srgb, var(--accent) 7%, var(--surface));
  box-shadow: var(--shadow);
}

.price__tag {
  position: absolute;
  top: -.72rem;
  left: 1.6rem;
  padding: .2rem .7rem;
  font-size: .74rem;
  color: #fff;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
}

.price h3 { margin-bottom: .2rem; }
.price__desc { font-size: .88rem; color: var(--muted); margin-bottom: 1.2rem; }

.price__amount {
  display: flex;
  align-items: baseline;
  gap: .35rem;
  margin-bottom: 1.3rem;
}

.price__num {
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}

.price__unit { font-size: .9rem; color: var(--muted); }

.price__list {
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .6rem;
  font-size: .91rem;
  color: var(--muted);
}

.price__list li {
  display: flex;
  gap: .6rem;
  align-items: flex-start;
}

.price__list li::before {
  content: "✓";
  color: var(--accent-2);
  font-weight: 700;
  flex: none;
}

.pricing__note {
  max-width: 42rem;
  margin: 2rem auto 0;
  text-align: center;
  font-size: .88rem;
  color: var(--muted);
}

/* ---------- 客户评价 ---------- */
.quote {
  margin: 0;
  padding: 1.6rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  transition: transform .28s ease, border-color .28s ease;
}

.quote:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent-2) 34%, var(--border)); }

.quote blockquote {
  margin: 0;
  font-size: .95rem;
  line-height: 1.75;
}

.quote blockquote::before {
  content: "“";
  display: block;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--accent-2);
  opacity: .5;
  margin-bottom: .2rem;
}

.quote figcaption {
  display: flex;
  align-items: center;
  gap: .8rem;
  margin-top: auto;
}

.quote figcaption strong { display: block; font-size: .92rem; }
.quote figcaption em { font-style: normal; font-size: .82rem; color: var(--muted); }

.avatar {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 50%;
  font-weight: 700;
  color: #fff;
}

.avatar--a { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.avatar--b { background: linear-gradient(135deg, #22d3ee, #0ea5e9); }
.avatar--c { background: linear-gradient(135deg, #f472b6, #fb7185); }

/* ---------- FAQ ---------- */
.faq { max-width: 52rem; margin-inline: auto; display: grid; gap: .7rem; }

.faq details {
  border: 1px solid var(--border);
  border-radius: 13px;
  background: var(--surface);
  padding: .1rem 1.2rem;
  transition: background .25s ease;
}

.faq details[open] { background: var(--surface-hi); }

.faq summary {
  cursor: pointer;
  padding: .95rem 0;
  font-weight: 550;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 1.15rem;
  color: var(--accent-2);
  transition: transform .25s ease;
  flex: none;
}

.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { margin: 0 0 1rem; font-size: .92rem; color: var(--muted); }

/* ---------- CTA ---------- */
.cta-band {
  position: relative;
  padding: clamp(2.4rem, 5vw, 3.6rem) clamp(1.5rem, 4vw, 3.5rem);
  text-align: center;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 8px);
  background:
    radial-gradient(120% 140% at 50% 0%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 60%),
    var(--surface);
  overflow: hidden;
}

.cta-band h2 { margin-bottom: .5rem; }
.cta-band > p { max-width: 36rem; margin-inline: auto; color: var(--muted); }

.cta-form {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .6rem;
  max-width: 27rem;
  margin: 1.8rem auto .6rem;
}

.cta-form input {
  flex: 1 1 15rem;
  min-width: 0;
  padding: .78rem 1rem;
  font: inherit;
  font-size: .95rem;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.cta-form input::placeholder { color: var(--muted); }

.cta-form input:focus {
  outline: none;
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-2) 22%, transparent);
}

.cta-form input.is-error { border-color: #f87171; }

.cta-form__msg {
  min-height: 1.4rem;
  margin: 0;
  font-size: .86rem;
  color: var(--accent-2);
}

.cta-form__msg.is-error { color: #f87171; }

/* ---------- 页脚 ---------- */
.footer {
  margin-top: 3rem;
  padding: 3rem 0 2.2rem;
  border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-soft) 55%, transparent);
}

.footer__cols {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.6fr repeat(3, 1fr);
}

.footer__brand p { max-width: 22rem; font-size: .88rem; margin: 1rem 0 0; }

.footer__col { display: flex; flex-direction: column; gap: .6rem; }
.footer__col h4 { color: var(--text); margin-bottom: .3rem; }
.footer__col a { font-size: .89rem; color: var(--muted); transition: color .2s ease; }
.footer__col a:hover { color: var(--accent-2); }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .4rem 1.5rem;
  margin-top: 2.6rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: .84rem;
  color: var(--muted);
}

.footer__bottom p { margin: 0; }

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  z-index: 40;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--text);
  background: color-mix(in srgb, var(--bg-soft) 88%, transparent);
  border: 1px solid var(--border);
  border-radius: 13px;
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
}

.to-top.is-show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { border-color: var(--accent-2); }
.to-top svg { width: 19px; height: 19px; }

/* ---------- 滚动渐入 ----------
   初始隐藏只在使用 JS 时生效(<html> 上有 .js 标记)。
   这样即使脚本被浏览器插件拦截或运行出错，内容依旧完整可见。 */
html.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1);
}

html.js .reveal.is-in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .footer__cols { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

/* 导航在 ~880px 以下就会横向溢出，提前切换为抽屉菜单 */
@media (max-width: 880px) {
  .menu-btn { display: grid; }
  .nav__cta { display: none; }
  .nav__cta-link { display: block; }

  .nav__links {
    position: absolute;
    top: calc(100% + .5rem);
    left: 1.5rem;
    right: 1.5rem;
    flex-direction: column;
    align-items: stretch;
    gap: .2rem;
    padding: .6rem;
    margin: 0;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(11, 15, 25, .94);            /* 不支持 color-mix 时的回退 */
    background: color-mix(in srgb, var(--bg) 94%, transparent);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .22s ease, transform .22s ease, visibility .22s;
  }

  [data-theme="light"] .nav__links { background: rgba(247, 248, 252, .96); }

  .nav__links.is-open { opacity: 1; visibility: visible; transform: none; }

  .nav__links a { padding: .6rem .8rem; border-radius: 9px; }
  .nav__links a:hover { background: var(--surface-hi); }
  .nav__links a::after { display: none; }

  .nav__cta-link {
    margin-top: .3rem;
    font-weight: 650;
    color: #fff !important;
    text-align: center;
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
  }
}

@media (max-width: 760px) {
  .logos__row { gap: .8rem 1.8rem; font-size: .95rem; }
  .price-grid { grid-template-columns: 1fr; }
  .footer__cols { grid-template-columns: 1fr 1fr; }
  .to-top { right: 1rem; bottom: 1rem; }
}

@media (max-width: 480px) {
  .container { width: calc(100% - 2rem); }
  .footer__cols { grid-template-columns: 1fr; gap: 1.6rem; }
  .brand__text em { display: none; }
  .terminal__title { display: none; }
}

/* ---------- 无障碍 / 打印 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  html.js .reveal { opacity: 1; transform: none; }
}

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection { background: color-mix(in srgb, var(--accent) 45%, transparent); }

@media print {
  .nav, .to-top, .orbs, .cta-form { display: none !important; }
  html.js .reveal { opacity: 1; transform: none; }
  body { background: #fff; color: #000; }
}