:root {
  --blue: #165dff;
  --blue-dark: #0e42c4;
  --ink: #0f1729;
  --ink-soft: #475069;
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --line: #e6e9ef;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 23, 41, 0.08);
  --shadow-lg: 0 24px 60px rgba(22, 93, 255, 0.18);
  --maxw: 1160px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---------- 小图标（线性，非 emoji） ---------- */
.btn__ico { width: 18px; height: 18px; vertical-align: -3px; margin-right: 7px; }
.ico-inline { width: 15px; height: 15px; vertical-align: -2px; margin-right: 5px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 4px;
  border: none; border-radius: 999px; padding: 12px 22px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: background .2s, transform .2s, box-shadow .2s; text-align: center;
}
.btn--primary { background: var(--blue); color: #fff; position: relative; overflow: hidden; }
.btn--primary:hover { background: var(--blue-dark); transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.btn--primary::after {
  content: ""; position: absolute; top: 0; left: -130%; width: 55%; height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.42), transparent);
  transform: skewX(-22deg);
}
.btn--primary:hover::after { animation: sheen .9s ease; }
@keyframes sheen { from { left: -130%; } to { left: 220%; } }
.btn--ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn--ghost:hover { border-color: var(--blue); color: var(--blue); }
.btn--outline { background: #fff; color: var(--blue); border: 1px solid var(--blue); }
.btn--outline:hover { background: var(--blue); color: #fff; }
.btn--lg { padding: 15px 30px; font-size: 16px; }
.btn--block { display: flex; width: 100%; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .2s;
}
.nav.is-scrolled { box-shadow: var(--shadow); }
.nav__inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: center; gap: 20px; padding: 12px 20px;
}
.nav__logo { display: flex; align-items: center; }
.nav__logo-img { height: 24px; width: auto; display: block; }
.nav__menu { display: flex; gap: 26px; margin-left: auto; }
.nav__menu a { color: var(--ink-soft); font-weight: 500; position: relative; padding: 4px 0; }
.nav__menu a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0;
  background: var(--blue); transition: width .25s ease;
}
.nav__menu a:hover { color: var(--blue); }
.nav__menu a:hover::after { width: 100%; }
.nav__actions { display: flex; align-items: center; gap: 14px; margin-left: 10px; }
.nav__tel { font-weight: 700; color: var(--blue); }
.nav__cta { padding: 10px 18px; }
.nav__toggle { display: none; background: none; border: none; cursor: pointer; color: var(--ink); padding: 4px; }
.nav__toggle svg { width: 24px; height: 24px; display: block; }

/* ---------- 首屏（极光动态背景） ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #eef3ff 0%, #ffffff 60%);
  padding: 60px 20px 70px;
}
.hero::before {
  content: ""; position: absolute; inset: -30%;
  background:
    radial-gradient(40% 40% at 20% 30%, rgba(22, 93, 255, 0.18), transparent 70%),
    radial-gradient(45% 45% at 80% 20%, rgba(80, 140, 255, 0.16), transparent 70%),
    radial-gradient(50% 50% at 60% 80%, rgba(120, 170, 255, 0.14), transparent 70%);
  filter: blur(10px); animation: aurora 16s ease-in-out infinite alternate; z-index: 0;
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: 0; opacity: .5;
  background-image:
    linear-gradient(rgba(22, 93, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 93, 255, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000, transparent 75%);
          mask-image: radial-gradient(circle at 50% 40%, #000, transparent 75%);
}
@keyframes aurora {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(3%, -2%, 0) scale(1.08); }
  100% { transform: translate3d(-3%, 2%, 0) scale(1.04); }
}

/* ---------- 首屏背景：SLA 打印过程渲染动画 ---------- */
.hero__bg {
  position: absolute; z-index: 0; pointer-events: none;
  right: -30px; top: 50%; transform: translateY(-50%);
  width: min(640px, 54vw); aspect-ratio: 1 / 1; opacity: .55;
  -webkit-mask-image: radial-gradient(circle at 60% 50%, #000 55%, transparent 86%);
          mask-image: radial-gradient(circle at 60% 50%, #000 55%, transparent 86%);
}
.hero__bg svg { width: 100%; height: 100%; overflow: visible; }
.hp-ring {
  fill: none; stroke: rgba(22, 93, 255, .35); stroke-width: 1.4;
  stroke-dasharray: 6 10; transform-origin: 300px 300px;
  animation: hpSpin 26s linear infinite;
}
.hp-ring--2 { stroke: rgba(22, 93, 255, .22); stroke-dasharray: 3 14; animation-duration: 38s; animation-direction: reverse; }
.hp-plate { fill: #c9d6f0; }
.hp-layer {
  fill: url(#hpLayerGrad); transform-box: fill-box; transform-origin: center bottom;
  opacity: 0; animation: hpLayer 7s linear infinite;
}
.hp-laser { fill: #bcd6ff; filter: drop-shadow(0 0 6px #6ea8ff); animation: hpLaser 7s ease-in-out infinite; }
.hp-dot { fill: #a9c7ff; animation: hpFloat 6s ease-in-out infinite; }
@keyframes hpSpin { to { transform: rotate(360deg); } }
@keyframes hpLayer {
  0%   { opacity: 0; transform: scaleY(.15); }
  8%   { opacity: 1; }
  84%  { opacity: 1; transform: scaleY(1); }
  100% { opacity: 0; transform: scaleY(1); }
}
@keyframes hpLaser {
  0%   { transform: translateY(0); opacity: 0; }
  6%   { opacity: .95; }
  88%  { opacity: .95; }
  100% { transform: translateY(220px); opacity: 0; }
}
@keyframes hpFloat {
  0%, 100% { transform: translateY(0); opacity: .5; }
  50%      { transform: translateY(-18px); opacity: .9; }
}

.hero__inner {
  position: relative; z-index: 1;
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 50px; align-items: center;
}
.hero__eyebrow {
  display: inline-block; background: #e3ecff; color: var(--blue);
  padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
}
.hero__title { font-size: 46px; line-height: 1.15; margin: 18px 0 16px; font-weight: 800; }
.hero__subtitle { font-size: 17px; color: var(--ink-soft); max-width: 520px; }
.hero__points { list-style: none; margin: 22px 0; display: grid; gap: 12px; }
.hero__points li { color: var(--ink); font-weight: 500; position: relative; padding-left: 32px; }
.hero__points li::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 21px; height: 21px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='10' fill='%23165dff'/%3E%3Cpath d='M7 12.4 L10.4 16 L17 8.4' fill='none' stroke='white' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
}
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 留资卡片 ---------- */
.leadcard {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow);
  display: grid; gap: 12px;
}
.leadcard__title { font-size: 20px; }
.leadcard__hint { font-size: 13px; color: var(--ink-soft); margin-bottom: 4px; }
.leadcard input, .leadcard select {
  width: 100%; padding: 13px 14px; border: 1px solid var(--line);
  border-radius: 10px; font-size: 15px; background: #fafbfc; color: var(--ink);
}
.leadcard input:focus, .leadcard select:focus { outline: none; border-color: var(--blue); background: #fff; }
.leadcard__privacy { font-size: 12px; color: var(--ink-soft); text-align: center; display: flex; align-items: center; justify-content: center; }
.leadcard--solid { background: #fff; }

/* ---------- 信任条 ---------- */
.trust { background: var(--ink); color: #fff; }
.trust__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 26px 20px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; text-align: center;
}
.trust__item strong { display: block; font-size: 32px; color: #6ea8ff; font-weight: 800; }
.trust__item span { font-size: 14px; opacity: .85; }

/* ---------- 通用区块 ---------- */
.section { max-width: var(--maxw); margin: 0 auto; padding: 70px 20px; }
.section--alt { max-width: none; background: var(--bg-alt); }
.section--alt > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }
.section__head { text-align: center; margin-bottom: 40px; }
.section__head h2 { font-size: 32px; font-weight: 800; }
.section__head p { color: var(--ink-soft); margin-top: 10px; font-size: 16px; }
.section__cta { text-align: center; margin-top: 34px; }

/* ---------- 滚动入场动画（无 JS 时自动显示） ---------- */
html.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
html.js .reveal.in { opacity: 1; transform: none; }
.cards .card:nth-child(2), .features .feature:nth-child(2), .cases .case:nth-child(2), .services .service:nth-child(2) { transition-delay: .08s; }
.cards .card:nth-child(3), .features .feature:nth-child(3), .cases .case:nth-child(3), .services .service:nth-child(3) { transition-delay: .16s; }
.features .feature:nth-child(4) { transition-delay: .12s; }
.features .feature:nth-child(5) { transition-delay: .18s; }
.features .feature:nth-child(6) { transition-delay: .24s; }

/* ---------- 产品卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); display: flex; flex-direction: column;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(22, 93, 255, .4); }
.card--hot { border-color: var(--blue); }
.card__tag {
  align-self: flex-start; background: #eef3ff; color: var(--blue);
  padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 600;
}
.card__tag--hot { background: var(--blue); color: #fff; }
.card h3 { font-size: 22px; margin: 14px 0 8px; }
.card__desc { color: var(--ink-soft); font-size: 15px; flex: 1; }
.card__spec { list-style: none; margin: 16px 0; display: grid; gap: 8px; font-size: 14px; color: var(--ink); }
.card__spec li { padding-left: 18px; position: relative; }
.card__spec li::before { content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 7px; background: var(--blue); border-radius: 2px; }

/* ---------- 产品卡配图 ---------- */
.card__media {
  margin: -26px -26px 20px; height: 190px; overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0; border-bottom: 1px solid var(--line);
  background: linear-gradient(160deg, #eef3ff 0%, #f7f9ff 100%);
  display: grid; place-items: center;
}
.card__media img {
  max-height: 150px; width: auto; object-fit: contain;
  filter: drop-shadow(0 12px 22px rgba(15, 23, 41, .16));
  transition: transform .4s cubic-bezier(.2, .7, .2, 1);
}
.card:hover .card__media img { transform: scale(1.06) translateY(-4px); }

/* ---------- 应用方案 Tabs ---------- */
.tabs__nav { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 26px; }
.tabs__btn {
  border: 1px solid var(--line); background: #fff; border-radius: 999px;
  padding: 10px 22px; font-size: 15px; font-weight: 600; cursor: pointer; color: var(--ink-soft);
  transition: all .2s;
}
.tabs__btn.is-active { background: var(--blue); color: #fff; border-color: var(--blue); }
.tabs__panel { display: none; }
.tabs__panel.is-active { display: block; animation: fade .35s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.appgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.appgrid > div { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.appgrid h4 { color: var(--blue); margin-bottom: 8px; }
.appgrid p { color: var(--ink-soft); }

/* 行业应用方案配图 */
.app-panel { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 30px; align-items: center; }
.app-panel__img {
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  border: 1px solid var(--line); background: #eef3ff;
}
.app-panel__img img {
  width: 100%; height: 100%; max-height: 320px; object-fit: cover; display: block;
  aspect-ratio: 4 / 3; transition: transform .5s cubic-bezier(.2, .7, .2, 1);
}
.tabs__panel.is-active .app-panel__img:hover img { transform: scale(1.05); }

/* ---------- 技术优势 ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature {
  background: var(--bg-alt); border-radius: var(--radius); padding: 26px;
  text-align: left; transition: transform .25s, box-shadow .25s, background .25s;
}
.feature:hover { transform: translateY(-6px); box-shadow: var(--shadow); background: #fff; }
.fico { width: 42px; height: 42px; color: var(--blue); margin-bottom: 14px; transition: transform .35s ease; }
.feature:hover .fico { transform: translateY(-3px) scale(1.07); }
.feature h3 { font-size: 19px; margin-bottom: 8px; }
.feature p { color: var(--ink-soft); font-size: 15px; }

/* ---------- 客户案例 + 信赖 LOGO 墙 ---------- */
.logowall {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
  gap: 18px 52px; max-width: 960px; margin: 0 auto 50px; padding: 30px 28px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.logowall__item { display: flex; align-items: center; transition: transform .35s ease; }
.logowall__item:hover { transform: translateY(-3px); }
.logowall__item:hover .brandlogo { filter: grayscale(0); opacity: 1; }
.brandlogo { height: 30px; width: auto; opacity: .55; filter: grayscale(1); transition: opacity .35s ease, filter .35s ease, transform .35s ease; }

.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 14px;
  transition: transform .25s, box-shadow .25s;
}
.case:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case__logo .brandlogo { height: 28px; opacity: 1; filter: none; }
.case__quote { font-size: 15px; color: var(--ink); flex: 1; line-height: 1.7; }
.case__from { font-size: 13px; color: var(--ink-soft); }

/* ---------- 服务保障 ---------- */
.services { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.service {
  text-align: center; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px 18px; transition: transform .25s, box-shadow .25s;
}
.service:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.svc-num {
  display: inline-grid; place-items: center; width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark)); color: #fff;
  font-weight: 800; font-size: 15px; margin-bottom: 14px; letter-spacing: .5px;
}
.service h3 { font-size: 18px; margin-bottom: 6px; }
.service p { color: var(--ink-soft); font-size: 14px; }

/* ---------- 留资大区 ---------- */
.leadband { background: linear-gradient(135deg, #165dff 0%, #0e42c4 100%); color: #fff; position: relative; overflow: hidden; }
.leadband::before {
  content: ""; position: absolute; inset: -20%;
  background: radial-gradient(40% 40% at 80% 20%, rgba(255,255,255,.14), transparent 70%);
  animation: aurora 14s ease-in-out infinite alternate;
}
.leadband__inner {
  position: relative; z-index: 1;
  max-width: var(--maxw); margin: 0 auto; padding: 60px 20px;
  display: grid; grid-template-columns: 1fr 0.85fr; gap: 50px; align-items: center;
}
.leadband__copy h2 { font-size: 30px; margin-bottom: 14px; }
.leadband__copy p { opacity: .92; font-size: 16px; max-width: 480px; }
.leadband__list { list-style: none; margin-top: 18px; display: grid; gap: 12px; }
.leadband__list li { font-weight: 500; position: relative; padding-left: 32px; }
.leadband__list li::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 21px; height: 21px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='10' fill='white'/%3E%3Cpath d='M7 12.4 L10.4 16 L17 8.4' fill='none' stroke='%23165dff' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
}
.leadcard--solid { color: var(--ink); }

/* ---------- 页脚 ---------- */
.footer { background: #0b1120; color: #c7cede; }
.footer__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 50px 20px 30px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px;
}
.footer__col h4 { color: #fff; margin-bottom: 14px; font-size: 16px; }
.footer__col p { margin-bottom: 8px; font-size: 14px; }
.footer__col a:hover { color: #6ea8ff; }
.footer__bar { border-top: 1px solid #1c2438; text-align: center; padding: 18px; font-size: 13px; color: #8794ad; }

/* ---------- 移动端悬浮条 + 悬浮按钮 ---------- */
.floatbar {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  background: var(--blue); color: #fff; text-align: center; padding: 14px; font-weight: 700; gap: 14px;
}
.floatbar__call { display: inline-flex; align-items: center; margin-right: 16px; }
.floatbar__lead { display: inline-block; }

.fab {
  position: fixed; right: 18px; bottom: 80px; z-index: 60;
  width: 46px; height: 46px; border-radius: 50%; border: none;
  background: var(--ink); color: #fff; cursor: pointer; box-shadow: var(--shadow);
  display: none; place-items: center; transition: transform .2s, background .2s;
}
.fab:hover { transform: translateY(-2px); background: var(--blue); }
.fab svg { width: 20px; height: 20px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 90px; transform: translateX(-50%) translateY(20px);
  background: #1a1f36; color: #fff; padding: 14px 24px; border-radius: 999px;
  font-weight: 600; opacity: 0; pointer-events: none; transition: all .3s; z-index: 70;
}
.toast.is-show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 滚动到表单弹出咨询层 ---------- */
.consult-pop { position: fixed; inset: 0; z-index: 100; display: none; }
.consult-pop.is-open { display: block; }
.consult-pop__overlay { position: absolute; inset: 0; background: rgba(15, 23, 41, .55); backdrop-filter: blur(2px); animation: fade .3s ease; }
.consult-pop__card {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: min(420px, 92vw); background: #fff; border-radius: 18px; padding: 32px 30px 28px;
  box-shadow: 0 30px 80px rgba(15, 23, 41, .35); animation: popIn .35s cubic-bezier(.2, .8, .2, 1);
}
@keyframes popIn { from { opacity: 0; transform: translate(-50%, -46%) scale(.96); } to { opacity: 1; transform: translate(-50%, -50%) scale(1); } }
.consult-pop__close {
  position: absolute; top: 14px; right: 16px; width: 32px; height: 32px; border: none;
  background: #f1f4f9; color: var(--ink-soft); border-radius: 50%; cursor: pointer;
  display: grid; place-items: center; transition: background .2s, color .2s;
}
.consult-pop__close:hover { background: var(--blue); color: #fff; }
.consult-pop__close svg { width: 18px; height: 18px; }
.consult-pop__eyebrow { display: inline-block; background: #e3ecff; color: var(--blue); padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.consult-pop__title { font-size: 22px; margin: 14px 0 8px; }
.consult-pop__sub { font-size: 14px; color: var(--ink-soft); margin-bottom: 18px; }
.consult-pop__form { display: grid; gap: 12px; }
.consult-pop__form input {
  width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 15px; background: #fafbfc; color: var(--ink);
}
.consult-pop__form input:focus { outline: none; border-color: var(--blue); background: #fff; }
.consult-pop__tel {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  margin-top: 16px; font-weight: 700; color: var(--blue); font-size: 15px;
}
.consult-pop__tel:hover { text-decoration: underline; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero__inner, .leadband__inner { grid-template-columns: 1fr; }
  .cards, .features, .cases, .appgrid, .services { grid-template-columns: repeat(2, 1fr); }
  .trust__inner { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .nav__menu, .nav__actions { display: none; }
  .nav__menu.is-open {
    display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; padding: 16px 20px; gap: 14px; border-bottom: 1px solid var(--line);
  }
  .nav__toggle { display: block; margin-left: auto; }
  .hero { padding: 40px 18px 50px; }
  .hero__title { font-size: 32px; }
  .section { padding: 50px 18px; }
  .section__head h2 { font-size: 26px; }
  .cards, .features, .cases, .appgrid, .services, .footer__inner, .app-panel { grid-template-columns: 1fr; }
  .logowall { gap: 16px 32px; padding: 22px 16px; }
  .floatbar { display: block; }
  .fab { display: grid; bottom: 76px; }
  .hero__cta .btn { flex: 1; }
  .consult-pop__card { left: 0; right: 0; top: auto; bottom: 0; transform: none; width: 100%; border-radius: 18px 18px 0 0; animation: sheetUp .35s cubic-bezier(.2, .8, .2, 1); padding-bottom: 34px; }
  @keyframes sheetUp { from { transform: translateY(100%); } to { transform: translateY(0); } }
}

/* ---------- 无障碍：减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1 !important; transform: none !important; transition: none; }
  .hero::before, .leadband::before, .btn--primary::after { animation: none; }
  .hero__bg { display: none; }
  .hp-ring, .hp-layer, .hp-laser, .hp-dot { animation: none; }
  .consult-pop__overlay, .consult-pop__card { animation: none; }
  * { scroll-behavior: auto; }
}