/* ============================================================
   永昊优品供应链 · 官网基础样式
   基调：暖白底色 + 品牌红渐变 + 柔和光影（与后台登录页统一的暖色系）
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --bg: #fff8f7;
  --bg-soft: #fdeeec;
  --panel: #ffffff;
  --panel-soft: rgba(224, 46, 36, 0.035);
  --line: rgba(224, 46, 36, 0.12);
  --line-strong: rgba(224, 46, 36, 0.24);

  --text: #1f2a3d;
  --text-2: #5c6b80;
  --text-3: #8a94a6;

  /* 品牌暖色 */
  --brand: #e02e24;
  --brand-2: #f0554a;
  --brand-deep: #c62319;
  --gold: #f7c948;
  --green: #2f9e6b;
  --rose-100: #fdecea;
  --rose-200: #fbdad6;
  --rose-300: #f6c4bf;

  /* 点缀色（供卡片图标等复色使用） */
  --accent-red: #e02e24;
  --accent-orange: #ef7a3d;
  --accent-green: #2f9e6b;
  --accent-gold: #d99a17;
  --accent-terra: #b3562f;
  --accent-deep: #d81f16;

  --grad: linear-gradient(115deg, #f0554a 0%, #e02e24 55%, #d81f16 100%);
  --grad-text: linear-gradient(100deg, #f0554a 0%, #e02e24 58%, #c62319 100%);
  --grad-soft: linear-gradient(120deg, rgba(224, 46, 36, 0.1), rgba(247, 201, 72, 0.16));

  --radius: 16px;
  --radius-lg: 24px;
  --maxw: 1200px;
  --nav-h: 72px;

  --shadow: 0 30px 70px -38px rgba(150, 30, 22, 0.3);
  --shadow-card: 0 18px 42px rgba(150, 30, 22, 0.08), 0 2px 8px rgba(150, 30, 22, 0.05);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

/* ---------- 重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(58% 42% at 8% 0%, rgba(224, 46, 36, 0.1), transparent 62%),
    radial-gradient(52% 44% at 92% 4%, rgba(247, 201, 72, 0.2), transparent 62%),
    radial-gradient(70% 60% at 50% 108%, rgba(240, 128, 102, 0.14), transparent 70%),
    radial-gradient(rgba(224, 46, 36, 0.045) 1px, transparent 1px);
  background-size: auto, auto, auto, 26px 26px;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

input,
select,
textarea {
  font: inherit;
  color: inherit;
}

::selection {
  background: rgba(224, 46, 36, 0.18);
  color: var(--brand-deep);
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-soft);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(#f6c4bf, #f8a8a1);
  border-radius: 20px;
  border: 2px solid var(--bg-soft);
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(#f0554a, #e02e24);
}

/* ---------- 布局 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.wrap--narrow {
  max-width: 900px;
}

.section {
  position: relative;
  padding: 112px 0;
}

.section--alt {
  background: linear-gradient(180deg, rgba(224, 46, 36, 0.035), transparent 60%);
  border-top: 1px solid rgba(224, 46, 36, 0.08);
  border-bottom: 1px solid rgba(224, 46, 36, 0.08);
}

.section--tight {
  padding: 84px 0;
}

.grad {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 进场动画 */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  z-index: 100;
  background: var(--grad);
  box-shadow: 0 0 12px rgba(224, 46, 36, 0.45);
}

/* ---------- 按钮 ---------- */
.btn {
  --btn-h: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: var(--btn-h);
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease,
    border-color 0.25s ease, color 0.25s ease;
}

.btn--sm {
  --btn-h: 38px;
  padding: 0 16px;
  font-size: 14px;
}

.btn--lg {
  --btn-h: 52px;
  padding: 0 28px;
  font-size: 16px;
}

.btn--primary {
  color: #fff;
  background: var(--grad);
  box-shadow: 0 12px 30px -14px rgba(224, 46, 36, 0.55);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px -14px rgba(224, 46, 36, 0.6);
}

.btn--ghost {
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line-strong);
  box-shadow: 0 6px 18px -12px rgba(150, 30, 22, 0.35);
}

.btn--ghost:hover {
  transform: translateY(-2px);
  border-color: rgba(224, 46, 36, 0.5);
  color: var(--brand-deep);
  box-shadow: 0 16px 36px -22px rgba(224, 46, 36, 0.7);
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14.5px;
  color: var(--brand);
}

.link-more svg {
  transition: transform 0.25s ease;
}

.link-more:hover svg {
  transform: translateX(4px);
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--line);
}

.nav__inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
}

.brand__mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #fff;
  background: var(--grad);
  box-shadow: 0 8px 20px -10px rgba(224, 46, 36, 0.6);
}

/* 后台配置了网站 LOGO(base.site_logo) 时使用图片 LOGO */
.brand__logo-wrap {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  flex: none;
}

.brand__logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 8px;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.12;
}

.brand__text strong {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand__text small {
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--text-3);
  font-family: var(--mono);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.nav__links a {
  position: relative;
  padding: 8px 13px;
  border-radius: 999px;
  font-size: 14.5px;
  color: var(--text-2);
  transition: color 0.22s ease, background 0.22s ease;
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
  transform: translateX(-50%);
  transition: width 0.28s ease;
}

.nav__links a:hover {
  color: var(--brand-deep);
  background: rgba(224, 46, 36, 0.06);
}

.nav__links a:hover::after {
  width: 16px;
}

.nav__links a.is-active {
  color: var(--brand-deep);
}

.nav__links a.is-active::after {
  width: 16px;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav__burger {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
}

.nav__burger span {
  display: block;
  width: 17px;
  height: 1.6px;
  margin: 3.4px auto;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav__burger.is-open span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
.nav__burger.is-open span:nth-child(2) {
  opacity: 0;
}
.nav__burger.is-open span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.nav__drawer {
  display: none;
  flex-direction: column;
  padding: 8px 24px 18px;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.nav__drawer.is-open {
  display: flex;
}

.nav__drawer a {
  padding: 12px 4px;
  color: var(--text-2);
  border-bottom: 1px solid rgba(224, 46, 36, 0.08);
}

.nav__drawer a:last-child {
  border-bottom: 0;
  color: var(--brand);
}

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 92px) 0 0;
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.55;
}

.hero__grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image: linear-gradient(rgba(224, 46, 36, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(224, 46, 36, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(70% 60% at 50% 30%, #000 0%, transparent 78%);
  mask-image: radial-gradient(70% 60% at 50% 30%, #000 0%, transparent 78%);
}

.hero__orbs span {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  z-index: 0;
  pointer-events: none;
}

.orb--a {
  width: 420px;
  height: 420px;
  top: -90px;
  left: -80px;
  background: rgba(224, 46, 36, 0.16);
  animation: float 14s ease-in-out infinite;
}

.orb--b {
  width: 380px;
  height: 380px;
  top: 40px;
  right: -70px;
  background: rgba(247, 201, 72, 0.3);
  animation: float 18s ease-in-out infinite reverse;
}

.orb--c {
  width: 300px;
  height: 300px;
  bottom: -120px;
  left: 38%;
  background: rgba(240, 128, 102, 0.2);
  animation: float 22s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(24px, -26px, 0) scale(1.08);
  }
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: 54px;
  padding-bottom: 70px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid rgba(224, 46, 36, 0.26);
  background: rgba(224, 46, 36, 0.05);
  color: #b3261e;
  font-size: 13px;
  letter-spacing: 0.06em;
}

.pill__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 3px rgba(224, 46, 36, 0.18);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(224, 46, 36, 0.05);
  }
}

.hero__title {
  margin: 26px 0 20px;
  font-size: clamp(32px, 4.4vw, 56px);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.hero__desc {
  max-width: 580px;
  color: var(--text-2);
  font-size: 16.5px;
}

.hero__desc strong {
  color: var(--brand-deep);
  font-weight: 600;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

/* 首屏四项服务承诺 */
.promises {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 48px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.promises li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  color: var(--text);
}

.promises li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--grad);
}

.promises li span {
  display: block;
  font-size: 12.5px;
  color: var(--text-3);
}

/* ---------- 首屏右侧：产品示意 ---------- */
.showcase {
  position: relative;
  padding: 6px;
}

.showcase__phone {
  position: relative;
  z-index: 3;
  width: 268px;
  margin: 0 auto;
  padding: 12px 12px 16px;
  border-radius: 34px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(170deg, #ffffff, #fff2f0);
  box-shadow: 0 30px 60px -34px rgba(150, 30, 22, 0.35), 0 2px 8px rgba(150, 30, 22, 0.06);
  animation: rise 1s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(28px) scale(0.98);
  }
}

.showcase__notch {
  width: 78px;
  height: 5px;
  margin: 0 auto 12px;
  border-radius: 999px;
  background: rgba(224, 46, 36, 0.16);
}

.showcase__screen {
  border-radius: 24px;
  padding: 12px;
  background: #fffaf9;
  border: 1px solid rgba(224, 46, 36, 0.1);
}

.ui-search {
  height: 30px;
  border-radius: 999px;
  background: var(--rose-100);
  border: 1px solid rgba(224, 46, 36, 0.12);
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-size: 11px;
  color: var(--text-3);
}

.ui-banner {
  position: relative;
  height: 82px;
  margin: 10px 0;
  border-radius: 14px;
  background: linear-gradient(120deg, rgba(240, 85, 74, 0.55), rgba(247, 201, 72, 0.65));
  overflow: hidden;
}

.ui-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(80% 120% at 85% 20%, rgba(255, 255, 255, 0.45), transparent 60%);
}

.ui-cats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.ui-cats i {
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(180deg, #ffffff, #fff4f2);
  border: 1px solid rgba(224, 46, 36, 0.1);
}

.ui-goods {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
}

.ui-good {
  border-radius: 12px;
  padding: 8px;
  background: #fff;
  border: 1px solid rgba(224, 46, 36, 0.1);
}

.ui-good i {
  display: block;
  height: 52px;
  border-radius: 8px;
  background: linear-gradient(140deg, rgba(240, 85, 74, 0.34), rgba(247, 201, 72, 0.38));
}

.ui-good span {
  display: block;
  height: 7px;
  margin-top: 8px;
  border-radius: 4px;
  background: rgba(224, 46, 36, 0.18);
}

.ui-good span:last-child {
  width: 58%;
  margin-top: 6px;
  background: rgba(224, 46, 36, 0.1);
}

.showcase__panel {
  position: absolute;
  z-index: 4;
  border-radius: 16px;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
}

.showcase__panel--modules {
  right: 0;
  top: 8%;
  width: 214px;
  animation: rise 1s cubic-bezier(0.22, 1, 0.36, 1) 0.15s both;
}

.showcase__panel--service {
  left: 0;
  bottom: 6%;
  width: 210px;
  animation: rise 1s cubic-bezier(0.22, 1, 0.36, 1) 0.3s both;
}

.panel__title {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--text-3);
  font-family: var(--mono);
  text-transform: uppercase;
}

.panel__list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.panel__list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-2);
}

.panel__list li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand);
  flex: none;
}

.panel__list li:nth-child(even)::before {
  background: var(--accent-orange);
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  z-index: 1;
  pointer-events: none;
}

.glow--a {
  width: 240px;
  height: 240px;
  right: 6%;
  top: -40px;
  background: rgba(240, 85, 74, 0.22);
}

.glow--b {
  width: 280px;
  height: 280px;
  left: -20px;
  bottom: -70px;
  background: rgba(247, 201, 72, 0.3);
}

/* ---------- 关键词滚动条 ---------- */
.marquee {
  position: relative;
  overflow: hidden;
  padding: 20px 0 30px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.marquee__track {
  display: flex;
  align-items: center;
  gap: 34px;
  width: max-content;
  animation: slide 46s linear infinite;
}

.marquee__track span {
  font-size: 13.5px;
  letter-spacing: 0.12em;
  color: var(--text-3);
  white-space: nowrap;
}

.marquee__track span::before {
  content: "◆";
  margin-right: 12px;
  font-size: 8px;
  color: rgba(224, 46, 36, 0.55);
  vertical-align: middle;
}

@keyframes slide {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- 内页头部 ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + 76px) 0 64px;
  overflow: hidden;
  border-bottom: 1px solid rgba(224, 46, 36, 0.1);
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image: linear-gradient(rgba(224, 46, 36, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(224, 46, 36, 0.05) 1px, transparent 1px);
  background-size: 58px 58px;
  -webkit-mask-image: radial-gradient(80% 120% at 20% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(80% 120% at 20% 0%, #000 0%, transparent 72%);
  pointer-events: none;
}

.page-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.page-hero h1 {
  margin: 18px 0 18px;
  font-size: clamp(30px, 3.8vw, 46px);
  letter-spacing: -0.02em;
}

.page-hero p {
  color: var(--text-2);
  font-size: 16.5px;
}

.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-3);
}

.crumbs a:hover {
  color: var(--brand);
}

.crumbs i {
  font-style: normal;
  opacity: 0.5;
}

/* ---------- 表单控件 ---------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.field label {
  font-size: 13.5px;
  color: var(--text-2);
}

.field label em {
  margin-left: 4px;
  font-style: normal;
  color: var(--brand-deep);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fdf7f6;
  color: var(--text);
  font-size: 14.5px;
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.field textarea {
  min-height: 104px;
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--text-3);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(224, 46, 36, 0.55);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(224, 46, 36, 0.12);
}

.field select option {
  background: #fff;
  color: var(--text);
}

.field.has-error input,
.field.has-error select {
  border-color: rgba(224, 46, 36, 0.7);
}

.field__error {
  font-size: 12.5px;
  color: var(--brand-deep);
}

.form__tip {
  font-size: 13px;
  color: var(--text-3);
}

.form__note {
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 13.5px;
  border: 1px solid rgba(47, 158, 107, 0.3);
  background: rgba(47, 158, 107, 0.08);
  color: #1f7a52;
}

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  z-index: 2;
  padding: 64px 0 26px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(224, 46, 36, 0.04));
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.7fr repeat(3, 1fr);
  gap: 40px;
}

.footer__brand p {
  margin-top: 18px;
  max-width: 320px;
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.8;
}

.footer__col h4 {
  margin-bottom: 16px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--text);
}

.footer__col a,
.footer__contact {
  display: block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--text-3);
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer__col a:hover {
  color: var(--brand);
  transform: translateX(3px);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 50px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-3);
}

.footer__bottom i {
  font-style: normal;
  font-family: var(--mono);
}

.footer__meta {
  font-size: 12.5px;
  opacity: 0.75;
}

/* ---------- 回到顶部 ---------- */
.backtop {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 80;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--brand-deep);
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 26px -16px rgba(150, 30, 22, 0.5);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.3s ease;
}

.backtop.is-show {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.backtop:hover {
  border-color: rgba(224, 46, 36, 0.6);
  box-shadow: 0 14px 30px -14px rgba(224, 46, 36, 0.7);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .nav__links {
    display: none;
  }

  .nav__burger {
    display: block;
  }

  .nav__actions .btn--ghost {
    display: none;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .hero__desc {
    max-width: none;
  }

  .showcase {
    max-width: 560px;
    margin: 0 auto;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  html {
    scroll-padding-top: 80px;
  }

  .section {
    padding: 76px 0;
  }

  .section--tight {
    padding: 60px 0;
  }

  .hero {
    padding-top: calc(var(--nav-h) + 58px);
  }

  .promises {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .showcase__panel {
    position: static;
    width: 100%;
    margin-top: 16px;
  }

  .showcase__phone {
    width: 100%;
    max-width: 300px;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .backtop {
    right: 16px;
    bottom: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

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