/* ==========================================================================
   烟斗策划官网 - 全局样式
   主色：深墨绿 #09241D ／ 金色 #D4A24C ／ 米白 #FAF7F2
   ========================================================================== */

:root {
  --ink: #09241d;
  --ink-2: #10352a;
  --ink-3: #17453a;
  --gold: #d4a24c;
  --gold-2: #e9c87f;
  --gold-soft: rgba(212, 162, 76, 0.12);
  --cream: #faf7f2;
  --white: #ffffff;
  --text: #1b2a24;
  --muted: #6e7c75;
  --line: rgba(9, 36, 29, 0.1);
  --radius: 20px;
  --shadow-sm: 0 6px 24px rgba(9, 36, 29, 0.06);
  --shadow-md: 0 18px 50px rgba(9, 36, 29, 0.1);
  --nav-h: 76px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB',
    'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background: var(--cream);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

button,
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

/* ============================ 通用布局 ============================ */

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 110px 0;
  position: relative;
}

.section--tight {
  padding: 80px 0;
}

.section--cream {
  background: var(--cream);
}

.section--white {
  background: var(--white);
}

.section--dark {
  background: var(--ink);
  color: #e8f0ec;
}

.section-head {
  max-width: 680px;
  margin: 0 auto 64px;
  text-align: center;
}

.section-head--left {
  margin-left: 0;
  text-align: left;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.eyebrow::before {
  content: '';
  width: 26px;
  height: 2px;
  background: var(--gold);
}

.section--dark .eyebrow {
  color: var(--gold-2);
}

.section-title {
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.section-title em {
  font-style: normal;
  color: var(--gold);
}

.section--dark .section-title {
  color: #fff;
}

.section-desc {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.section--dark .section-desc {
  color: rgba(232, 240, 236, 0.72);
}

/* ============================ 按钮 ============================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.28s var(--ease);
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--gold-2), var(--gold));
  color: #24190a;
  box-shadow: 0 10px 26px rgba(212, 162, 76, 0.32);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(212, 162, 76, 0.42);
}

.btn--ghost {
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}

.btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold-2);
}

.btn--line {
  border-color: var(--line);
  color: var(--text);
  background: #fff;
}

.btn--line:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ============================ 导航 ============================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: all 0.3s var(--ease);
}

.nav--solid {
  background: rgba(9, 36, 29, 0.94);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(212, 162, 76, 0.14);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav__logo {
  width: 42px;
  height: 42px;
  border-radius: 50%;
}

.nav__name {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav__name strong {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
}

.nav__name span {
  margin-top: 2px;
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav__link {
  position: relative;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.82);
  transition: color 0.24s var(--ease);
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s var(--ease);
}

.nav__link:hover {
  color: #fff;
}

.nav__link:hover::after {
  transform: scaleX(1);
}

.nav__cta {
  padding: 10px 22px;
  font-size: 14px;
}

.nav__toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 12px;
  background: transparent;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
}

/* ============================ Hero ============================ */

.hero {
  position: relative;
  padding: calc(var(--nav-h) + 90px) 0 0;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -320px;
  right: -180px;
  width: 760px;
  height: 760px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 162, 76, 0.26), transparent 68%);
  filter: blur(12px);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 162, 76, 0.4), transparent);
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 64px;
  align-items: center;
  padding-bottom: 88px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border: 1px solid rgba(212, 162, 76, 0.36);
  border-radius: 999px;
  background: rgba(212, 162, 76, 0.1);
  font-size: 13px;
  color: var(--gold-2);
}

.hero__badge i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(212, 162, 76, 0.2);
}

.hero__title {
  margin-top: 26px;
  font-size: clamp(34px, 4.6vw, 58px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.hero__title em {
  font-style: normal;
  background: linear-gradient(120deg, var(--gold-2), var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__desc {
  max-width: 540px;
  margin-top: 24px;
  font-size: 17px;
  line-height: 1.9;
  color: rgba(232, 240, 236, 0.74);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 38px;
}

.hero__points {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  margin-top: 44px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero__point {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: rgba(232, 240, 236, 0.72);
}

.hero__point i {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(212, 162, 76, 0.16);
  color: var(--gold);
  font-size: 11px;
  font-style: normal;
}

/* Hero 右侧卡片组 */
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero__phone {
  position: relative;
  width: 300px;
  padding: 18px;
  border-radius: 34px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(6px);
}

.hero__screen {
  border-radius: 24px;
  background: #fff;
  overflow: hidden;
}

.hero__screen-top {
  padding: 20px 18px 16px;
  background: linear-gradient(135deg, #ff8a3d, #ff5000);
  color: #fff;
}

.hero__screen-top small {
  font-size: 11px;
  opacity: 0.85;
  letter-spacing: 0.08em;
}

.hero__screen-top strong {
  display: block;
  margin-top: 6px;
  font-size: 19px;
  font-weight: 700;
}

.hero__screen-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 18px 16px;
}

.hero__cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  color: #6b7280;
}

.hero__cell i {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: #fff6f1;
  font-size: 17px;
  font-style: normal;
}

.hero__screen-list {
  padding: 0 16px 20px;
}

.hero__item {
  display: flex;
  gap: 10px;
  padding: 10px;
  margin-bottom: 10px;
  border-radius: 12px;
  background: #faf7f2;
}

.hero__item-thumb {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, #e8dcc7, #d4a24c33);
}

.hero__item-body {
  flex: 1;
  min-width: 0;
}

.hero__item-body b {
  display: block;
  font-size: 12px;
  color: #1f2329;
}

.hero__item-body span {
  font-size: 10px;
  color: #9ca3af;
}

.hero__item-price {
  color: #ff5000;
  font-size: 13px;
  font-weight: 700;
}

/* 悬浮数据卡 */
.hero__float {
  position: absolute;
  padding: 14px 18px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
}

.hero__float b {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
}

.hero__float span {
  font-size: 11px;
  color: var(--muted);
}

.hero__float--tl {
  top: 42px;
  left: -12px;
}

.hero__float--br {
  right: -10px;
  bottom: 54px;
}

/* Hero 底部数据条 */
.hero__stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.08);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero__stat {
  padding: 34px 24px;
  background: var(--ink);
  text-align: center;
}

.hero__stat b {
  display: block;
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  color: var(--gold-2);
  letter-spacing: -0.02em;
}

.hero__stat span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: rgba(232, 240, 236, 0.6);
}

/* ============================ 能力卡片 ============================ */

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature {
  position: relative;
  padding: 34px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: all 0.32s var(--ease);
  overflow: hidden;
}

.feature::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, var(--gold-soft), transparent 62%);
  opacity: 0;
  transition: opacity 0.32s var(--ease);
}

.feature:hover {
  transform: translateY(-6px);
  border-color: rgba(212, 162, 76, 0.4);
  box-shadow: var(--shadow-md);
}

.feature:hover::before {
  opacity: 1;
}

.feature > * {
  position: relative;
  z-index: 1;
}

.feature__icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin-bottom: 22px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--ink), var(--ink-3));
  color: var(--gold-2);
  font-size: 24px;
}

.feature__title {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature__desc {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.feature__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.feature__tags span {
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--cream);
  font-size: 12px;
  color: #55635c;
}

/* ============================ 解决方案 ============================ */

.solutions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.solution {
  display: flex;
  flex-direction: column;
  padding: 38px 32px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  transition: all 0.32s var(--ease);
}

.solution:hover {
  border-color: rgba(212, 162, 76, 0.42);
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-6px);
}

.solution--featured {
  border-color: rgba(212, 162, 76, 0.5);
  background: linear-gradient(165deg, rgba(212, 162, 76, 0.16), rgba(255, 255, 255, 0.03));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
}

.solution__tag {
  align-self: flex-start;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(212, 162, 76, 0.16);
  font-size: 12px;
  font-weight: 600;
  color: var(--gold-2);
}

.solution__title {
  margin-top: 20px;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
}

.solution__desc {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(232, 240, 236, 0.68);
}

.solution__list {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  flex: 1;
}

.solution__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 14px;
  color: rgba(232, 240, 236, 0.8);
}

.solution__list i {
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(212, 162, 76, 0.18);
  color: var(--gold-2);
  font-size: 10px;
  font-style: normal;
}

/* ============================ 流程 ============================ */

.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 0 24px;
  text-align: center;
}

.step::after {
  content: '';
  position: absolute;
  top: 30px;
  left: calc(50% + 42px);
  width: calc(100% - 84px);
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    rgba(212, 162, 76, 0.55) 0 8px,
    transparent 8px 16px
  );
}

.step:last-child::after {
  display: none;
}

.step__num {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  margin: 0 auto 22px;
  border-radius: 50%;
  border: 1px solid rgba(212, 162, 76, 0.42);
  background: var(--ink);
  font-size: 19px;
  font-weight: 700;
  color: var(--gold-2);
}

.step__title {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.step__desc {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(232, 240, 236, 0.62);
}

/* ============================ 案例 ============================ */

.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: all 0.32s var(--ease);
}

.case:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(212, 162, 76, 0.4);
}

.case__industry {
  display: inline-flex;
  align-self: flex-start;
  padding: 5px 13px;
  border-radius: 999px;
  background: var(--gold-soft);
  font-size: 12px;
  font-weight: 600;
  color: #9a7220;
}

.case__title {
  margin-top: 18px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
}

.case__desc {
  margin-top: 12px;
  flex: 1;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.case__result {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px dashed var(--line);
}

.case__result b {
  font-size: 30px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.02em;
}

.case__result span {
  font-size: 13px;
  color: var(--muted);
}

/* ============================ 关于 ============================ */

.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.about__text p {
  margin-top: 20px;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--muted);
}

.about__values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 34px;
}

.about__value {
  padding: 20px 22px;
  border-radius: 16px;
  background: var(--cream);
  border: 1px solid var(--line);
}

.about__value b {
  display: block;
  font-size: 15px;
  color: var(--ink);
}

.about__value span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

.about__visual {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.about__card {
  padding: 26px 24px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.about__card--accent {
  background: linear-gradient(150deg, var(--ink), var(--ink-3));
  border-color: transparent;
  color: #fff;
}

.about__card b {
  display: block;
  font-size: 26px;
  font-weight: 700;
  color: var(--gold);
}

.about__card--accent b {
  color: var(--gold-2);
}

.about__card span {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
}

.about__card--accent span {
  color: rgba(232, 240, 236, 0.68);
}

.about__card:nth-child(3) {
  grid-column: 1 / -1;
}

/* ============================ 联系 ============================ */

.contact {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 26px;
  margin-top: 36px;
}

.contact__row {
  display: flex;
  gap: 16px;
}

.contact__icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  border-radius: 14px;
  background: var(--gold-soft);
  font-size: 19px;
}

.contact__row b {
  display: block;
  font-size: 14px;
  color: var(--ink);
}

.contact__row span {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  color: var(--muted);
}

/* 电话 / 邮箱可点，保持和正文同色，hover 变金色 */
.contact__link {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease;
}

.contact__link:hover,
.contact__link:focus-visible {
  color: var(--gold);
  text-decoration: underline;
}

.contact__form {
  padding: 40px 36px;
  border-radius: 24px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 13px;
  font-weight: 600;
  color: #3c4a43;
}

.field label em {
  color: #d94a3d;
  font-style: normal;
}

.field input,
.field select,
.field textarea {
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--cream);
  font-size: 14.5px;
  color: var(--text);
  transition: all 0.24s var(--ease);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--gold);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(212, 162, 76, 0.14);
}

.field textarea {
  min-height: 110px;
  resize: vertical;
}

.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 26px;
}

.form-tip {
  font-size: 12.5px;
  color: var(--muted);
}

.form-msg {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  display: none;
}

.form-msg--ok {
  display: block;
  background: rgba(46, 160, 67, 0.1);
  color: #1f7a33;
}

.form-msg--err {
  display: block;
  background: rgba(217, 74, 61, 0.1);
  color: #b3352a;
}

/* ============================ 页脚 ============================ */

.footer {
  padding: 68px 0 34px;
  background: #061a15;
  color: rgba(232, 240, 236, 0.62);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer__brand img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
}

.footer__brand strong {
  display: block;
  font-size: 17px;
  color: #fff;
  letter-spacing: 0.06em;
}

.footer__brand span {
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.footer__desc {
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.9;
  max-width: 320px;
}

.footer__col h4 {
  margin-bottom: 18px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
}

.footer__col a,
.footer__col p {
  display: block;
  margin-bottom: 12px;
  font-size: 13.5px;
  color: rgba(232, 240, 236, 0.62);
  transition: color 0.24s var(--ease);
}

.footer__col a:hover {
  color: var(--gold-2);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 26px;
  font-size: 12.5px;
  color: rgba(232, 240, 236, 0.42);
  flex-wrap: wrap;
}

/* 备案号链接：跟随页脚的低调色，hover 才亮起来 */
.footer__icp {
  color: rgba(232, 240, 236, 0.42);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__icp:hover,
.footer__icp:focus-visible {
  color: var(--gold);
  text-decoration: underline;
}

/* 页脚联系方式：可点（tel / mailto），hover 亮起来 */
.footer__link {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__link:hover,
.footer__link:focus-visible {
  color: var(--gold);
}

/* 版权行里的英文小标，弱化处理 */
.footer__brand-en {
  font-size: 11px;
  letter-spacing: 0.08em;
  opacity: 0.7;
}

/* 窄列里的标题：字号收紧 + 均衡换行，避免最后一行只剩一两个字 */
.about .section-title,
.contact .section-title {
  font-size: clamp(26px, 2.9vw, 36px);
  text-wrap: balance;
}

.about {
  grid-template-columns: 1.02fr 0.98fr;
}

.contact {
  grid-template-columns: 0.92fr 1.08fr;
}
/* ============================ 滚动淡入 ============================ */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ============================ 响应式 ============================ */

@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-bottom: 64px;
  }

  .hero__visual {
    order: -1;
  }

  .features,
  .cases {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .process {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 0;
  }

  .step::after {
    display: none;
  }

  .about,
  .contact {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .section {
    padding: 82px 0;
  }
}

@media (max-width: 720px) {
  :root {
    --nav-h: 66px;
  }

  html,
  body {
    overflow-x: hidden;
  }

  .nav__menu {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 24px;
    background: rgba(9, 36, 29, 0.98);
    backdrop-filter: blur(14px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.28s var(--ease);
  }

  .nav__menu.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav__link {
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    font-size: 16px;
  }

  .nav__link::after {
    display: none;
  }

  .nav__cta {
    margin-top: 18px;
    text-align: center;
  }

  .nav__toggle {
    display: grid;
    place-items: center;
  }

  .hero {
    padding-top: calc(var(--nav-h) + 56px);
  }

  .hero__stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__visual {
    max-width: 100%;
    padding: 26px 0;
  }

  .hero__phone {
    width: 236px;
    max-width: 100%;
  }

  .hero__float--tl {
    left: 0;
    top: 6px;
    padding: 10px 14px;
  }

  .hero__float--br {
    right: 0;
    bottom: 6px;
    padding: 10px 14px;
  }

  .features,
  .cases {
    grid-template-columns: 1fr;
  }

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

  .step {
    padding: 0;
    text-align: left;
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: 18px;
    align-items: start;
  }

  .step__num {
    margin: 0;
  }

  .step__title {
    margin-top: 8px;
  }

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

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

  .contact__form {
    padding: 28px 22px;
  }

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

  .form-foot {
    flex-direction: column;
    align-items: stretch;
  }

  .form-foot .btn {
    width: 100%;
  }

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

  .section {
    padding: 64px 0;
  }

  .section-head {
    margin-bottom: 44px;
  }
}