/* =========================================================
   载鑫 · 站点样式
   纯 CSS，无外部依赖；目录：
   01 变量 / 02 基础 / 03 通用 / 04 头部 / 05 首屏 /
   06 卡片与栅格 / 07 流程 / 08 表单 / 09 页脚 /
   10 行业页 / 11 隐私协议 / 12 动效 / 13 响应式
   ========================================================= */

/* ---------- 01 变量 ---------- */
:root {
  --paper: #f6f1e8;
  --paper-2: #efe8dc;
  --raise: #fcf9f3;
  --ink: #171a18;
  --ink-2: #3e443f;
  --ink-3: #6b726c;
  --line: rgba(23, 26, 24, 0.13);
  --line-2: rgba(23, 26, 24, 0.26);
  --clay: #a6412a;
  --clay-2: #8a3320;
  --clay-3: #d98870;
  --pine: #1c302b;
  --pine-2: #223b34;
  --on-dark: #ede7db;
  --on-dark-2: rgba(237, 231, 219, 0.66);
  --serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;
  --sans: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  --maxw: 1180px;
  --r: 2px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --fs-h2: clamp(26px, 3.1vw, 40px);
}

/* ---------- 02 基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--paper);
  background-image: radial-gradient(rgba(23, 26, 24, 0.05) 0.8px, transparent 0.8px);
  background-size: 5px 5px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.is-locked {
  overflow: hidden;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}

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

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

button {
  font: inherit;
  color: inherit;
}

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

::selection {
  background: var(--clay);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 3px;
}

.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;
  left: 16px;
  top: -60px;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  font-size: 14px;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 12px;
}

/* 占位标记：待补充的信息统一使用 */
.todo {
  border-bottom: 1px dashed currentColor;
  opacity: 0.9;
  white-space: nowrap;
}

/* ---------- 03 通用 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 48px);
}

.section {
  padding-block: clamp(62px, 7.4vw, 112px);
  position: relative;
  scroll-margin-top: 88px;
}

.section--tight {
  padding-block: clamp(46px, 5.4vw, 74px);
}

.section--paper2 {
  background: var(--paper-2);
}

.section--dark {
  background: var(--pine);
  color: var(--on-dark);
}

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

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.65;
  flex: none;
}

.sec-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
  gap: clamp(18px, 4vw, 64px);
  align-items: end;
  margin-bottom: clamp(34px, 4.2vw, 60px);
}

.sec-head h2 {
  font-family: var(--serif);
  font-size: var(--fs-h2);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.01em;
  margin-top: 16px;
}

.sec-head p {
  color: var(--ink-3);
  font-size: 15px;
  line-height: 1.95;
  max-width: 46ch;
}

.section--dark .sec-head p {
  color: var(--on-dark-2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 26px;
  border: 1px solid var(--ink);
  border-radius: var(--r);
  background: transparent;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.28s var(--ease), color 0.28s var(--ease), border-color 0.28s var(--ease);
}

.btn svg {
  flex: none;
  transition: transform 0.3s var(--ease);
}

.btn:hover svg {
  transform: translateX(4px);
}

.btn--primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.btn--primary:hover {
  background: var(--clay);
  border-color: var(--clay);
}

.btn--ghost {
  border-color: var(--line-2);
  color: var(--ink);
}

.btn--ghost:hover {
  border-color: var(--ink);
  background: rgba(23, 26, 24, 0.04);
}

.btn--light {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
}

.btn--light:hover {
  background: var(--clay);
  border-color: var(--clay);
  color: #fff;
}

.btn--dark {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.btn--dark:hover {
  background: var(--clay);
  border-color: var(--clay);
}

.btn--block {
  width: 100%;
}

/* ---------- 04 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: none;
}

.brand__mark {
  color: var(--ink);
  display: block;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__text strong {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.brand__text small {
  font-size: 9px;
  letter-spacing: 0.24em;
  color: var(--ink-3);
  margin-top: 3px;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.2vw, 30px);
}

.nav > [data-nav-industries] {
  display: contents;
}

.nav__link {
  position: relative;
  font-size: 14px;
  color: var(--ink-2);
  padding-block: 6px;
  white-space: nowrap;
  transition: color 0.2s;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--clay);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

.nav__link:hover,
.nav__link[aria-current="page"] {
  color: var(--ink);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav__link--cta {
  border: 1px solid var(--ink);
  border-radius: var(--r);
  padding: 9px 20px;
  font-weight: 600;
  color: var(--ink);
  transition: background 0.25s, color 0.25s;
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  background: var(--ink);
  color: var(--paper);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-right: -8px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  position: relative;
  flex: none;
}

.nav-toggle span {
  display: block;
  position: absolute;
  left: 11px;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.32s var(--ease), opacity 0.2s;
}

.nav-toggle span:nth-child(1) {
  top: 19px;
}

.nav-toggle span:nth-child(2) {
  top: 26px;
}

body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}

body.nav-open .nav-toggle span:nth-child(2) {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* ---------- 05 首屏 ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(46px, 6vw, 88px) clamp(52px, 6.4vw, 92px);
  border-bottom: 1px solid var(--line);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.55;
  -webkit-mask-image: radial-gradient(120% 90% at 78% 30%, #000 0%, transparent 68%);
  mask-image: radial-gradient(120% 90% at 78% 30%, #000 0%, transparent 68%);
  pointer-events: none;
}

.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: clamp(30px, 5vw, 72px);
  align-items: center;
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(34px, 4.3vw, 58px);
  font-weight: 600;
  line-height: 1.24;
  margin-top: 20px;
  letter-spacing: 0.005em;
}

.hero h1 em {
  font-style: normal;
  color: var(--clay);
  background: linear-gradient(transparent 64%, rgba(166, 65, 42, 0.16) 64%);
}

.hero__lead {
  margin-top: 24px;
  max-width: 52ch;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.95;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 42px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.hero__stats dt {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
}

.hero__stats dd {
  font-family: var(--serif);
  font-size: clamp(16px, 1.6vw, 19px);
  margin-top: 6px;
  line-height: 1.5;
}

/* 首屏图形：服务商档案卡（内联 SVG） */
.hero__visual {
  position: relative;
}

.filecard {
  position: relative;
  background: var(--raise);
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  padding: clamp(18px, 2.2vw, 28px);
  box-shadow: 0 30px 60px -46px rgba(23, 26, 24, 0.8);
}

.filecard::before,
.filecard::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--clay);
}

.filecard::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.filecard::after {
  right: -1px;
  bottom: -1px;
  border-left: 0;
  border-top: 0;
}

.filecard__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--ink-3);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  text-transform: uppercase;
}

.filecard__stamp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--clay);
  border: 1px solid rgba(166, 65, 42, 0.4);
  padding: 3px 9px;
  letter-spacing: 0.1em;
  font-size: 10px;
}

.filecard svg {
  width: 100%;
  height: auto;
}

.filecard__foot {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-2);
  font-size: 12px;
  color: var(--ink-3);
  text-align: center;
}

.filecard__foot span {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.filecard__foot svg {
  width: 13px;
  height: 13px;
  flex: none;
  color: var(--clay);
}

/* 首屏下方声明条 */
.claim-bar {
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
}

.claim-bar ul {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.claim-bar li {
  padding: 20px clamp(14px, 2.4vw, 30px);
  font-size: 13.5px;
  color: var(--ink-2);
  display: flex;
  gap: 10px;
  align-items: baseline;
  border-left: 1px solid var(--line);
}

.claim-bar li:first-child {
  border-left: 0;
  padding-left: 0;
}

.claim-bar b {
  font-family: var(--serif);
  color: var(--clay);
  font-weight: 600;
  flex: none;
}

/* ---------- 06 卡片与栅格 ---------- */
.ind-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 28px);
}

.ind-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(24px, 3vw, 40px);
  background: var(--raise);
  border: 1px solid var(--line);
  border-radius: var(--r);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.3s;
}

.ind-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--clay);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}

.ind-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-2);
  box-shadow: 0 22px 44px -34px rgba(23, 26, 24, 0.75);
}

.ind-card:hover::after {
  transform: scaleX(1);
}

.ind-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.ind-card__idx {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink-3);
  padding-top: 6px;
}

.ind-card__icon {
  width: 62px;
  height: 62px;
  color: var(--ink);
  opacity: 0.92;
}

.ind-card h3 {
  font-family: var(--serif);
  font-size: clamp(23px, 2.4vw, 29px);
  font-weight: 600;
  margin-top: 18px;
  letter-spacing: 0.02em;
}

.ind-card__en {
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-top: 4px;
}

.ind-card__desc {
  margin-top: 14px;
  font-size: 14.5px;
  color: var(--ink-3);
  line-height: 1.9;
}

.ind-card ul {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.ind-card ul li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding-block: 9px;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
  color: var(--ink-2);
}

.ind-card ul li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--clay);
  flex: none;
  margin-top: 9px;
}

.ind-card__more {
  margin-top: auto;
  padding-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 600;
}

.ind-card__more svg {
  transition: transform 0.3s var(--ease);
}

.ind-card:hover .ind-card__more svg {
  transform: translateX(5px);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.value-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  padding: clamp(24px, 3vw, 40px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.value-item__n {
  font-family: var(--serif);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--clay);
  padding-top: 6px;
}

.value-item h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.6;
}

.value-item p {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-3);
}

/* ---------- 07 流程 ---------- */
.process {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.step {
  position: relative;
  border-top: 1px solid var(--line-2);
  padding: 34px 18px 0 0;
}

.step__n {
  position: absolute;
  top: -14px;
  left: 0;
  height: 27px;
  min-width: 40px;
  padding-inline: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-2);
}

.section--paper2 .step__n {
  background: var(--paper-2);
}

.step h3 {
  font-size: 16.5px;
  font-weight: 700;
  margin-top: 4px;
}

.step p {
  margin-top: 9px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--ink-3);
}

/* ---------- 08 表单 ---------- */
.lead {
  background: var(--pine);
  color: var(--on-dark);
  position: relative;
  overflow: hidden;
}

.lead::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(237, 231, 219, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(237, 231, 219, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(90% 80% at 20% 20%, #000, transparent 70%);
  mask-image: radial-gradient(90% 80% at 20% 20%, #000, transparent 70%);
  pointer-events: none;
}

.lead .eyebrow {
  color: var(--on-dark-2);
}

.lead__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: clamp(30px, 5vw, 68px);
  align-items: start;
}

.lead__copy h2 {
  font-family: var(--serif);
  font-size: var(--fs-h2);
  font-weight: 600;
  line-height: 1.32;
  margin-top: 16px;
}

.lead__copy > p {
  margin-top: 18px;
  color: var(--on-dark-2);
  font-size: 15px;
  line-height: 1.95;
  max-width: 40ch;
}

.lead__points {
  margin-top: 30px;
  display: grid;
  gap: 14px;
  border-top: 1px solid rgba(237, 231, 219, 0.16);
  padding-top: 22px;
}

.lead__points li {
  display: flex;
  gap: 11px;
  font-size: 13.5px;
  color: var(--on-dark-2);
  line-height: 1.75;
}

.lead__points li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--clay-3);
  flex: none;
  margin-top: 8px;
}

.lead__contact {
  margin-top: 30px;
  font-size: 13px;
  color: var(--on-dark-2);
  line-height: 2.1;
}

.lead__contact b {
  color: var(--on-dark);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.lead-form-wrap {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(237, 231, 219, 0.2);
  border-radius: var(--r);
  padding: clamp(20px, 2.8vw, 34px);
}

.lead-form__title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(237, 231, 219, 0.16);
}

.lead-form__title h3 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.lead-form__title span {
  font-size: 11.5px;
  color: var(--on-dark-2);
  letter-spacing: 0.08em;
}

.lead-form__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

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

.field label {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--on-dark-2);
  margin-bottom: 7px;
}

.field label i {
  font-style: normal;
  color: var(--clay-3);
  margin-left: 2px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 48px;
  padding: 11px 13px;
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(237, 231, 219, 0.22);
  border-radius: var(--r);
  color: var(--on-dark);
  font-family: inherit;
  font-size: 16px;
  line-height: 1.5;
  transition: border-color 0.2s, background 0.2s;
}

.field input::placeholder,
.field textarea::placeholder {
  color: rgba(237, 231, 219, 0.38);
  font-size: 14px;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--clay-3);
  background: rgba(0, 0, 0, 0.26);
}

.field select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 38px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23EDE7DB' stroke-width='1.4' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 13px center;
}

.field select option {
  color: #171a18;
  background: #fff;
}

.field textarea {
  min-height: 100px;
  resize: vertical;
  line-height: 1.7;
}

.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea {
  border-color: var(--clay-3);
  background: rgba(166, 65, 42, 0.14);
}

.field__err {
  display: none;
  font-size: 12.5px;
  color: #efa28b;
  margin-top: 6px;
  line-height: 1.5;
}

.field.is-invalid .field__err {
  display: block;
}

.consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 18px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--on-dark-2);
  cursor: pointer;
}

.consent input {
  width: 17px;
  height: 17px;
  margin: 3px 0 0;
  accent-color: var(--clay);
  flex: none;
  cursor: pointer;
}

.consent a {
  color: var(--on-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.consent a:hover {
  color: #fff;
}

.consent.is-invalid {
  color: #efa28b;
}

.lead-form__submit {
  margin-top: 18px;
}

.lead-form__note {
  margin-top: 12px;
  font-size: 12px;
  color: rgba(237, 231, 219, 0.45);
  line-height: 1.7;
}

.lead-form__status {
  display: none;
  margin-bottom: 16px;
  padding: 11px 14px;
  font-size: 13.5px;
  line-height: 1.7;
  border-left: 2px solid var(--clay-3);
  background: rgba(166, 65, 42, 0.16);
  color: #f3cabb;
}

.lead-form__status.is-visible {
  display: block;
}

.lead-form[aria-busy="true"] .btn {
  opacity: 0.7;
  pointer-events: none;
}

.lead-done {
  display: grid;
  gap: 14px;
  justify-items: start;
  padding: clamp(6px, 1.5vw, 14px) 0;
}

.lead-done__mark {
  width: 54px;
  height: 54px;
  border: 1px solid rgba(237, 231, 219, 0.38);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--on-dark);
}

.lead-done h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.lead-done p {
  font-size: 14px;
  color: var(--on-dark-2);
  line-height: 1.9;
  max-width: 40ch;
}

.lead-done strong {
  color: var(--on-dark);
  font-weight: 600;
  letter-spacing: 0.06em;
}

.lead-done__again {
  margin-top: 6px;
  background: none;
  border: 0;
  border-bottom: 1px solid rgba(237, 231, 219, 0.4);
  padding: 0 0 3px;
  font-size: 13px;
  color: var(--on-dark-2);
  cursor: pointer;
}

.lead-done__again:hover {
  color: #fff;
  border-color: #fff;
}

/* ---------- 09 页脚 ---------- */
.footer {
  background: #121513;
  color: rgba(237, 231, 219, 0.6);
  padding-block: clamp(40px, 5.4vw, 68px) 26px;
  font-size: 13.5px;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.15fr;
  gap: clamp(24px, 3.4vw, 48px);
  padding-bottom: clamp(28px, 3.4vw, 40px);
  border-bottom: 1px solid rgba(237, 231, 219, 0.14);
}

.footer .brand__mark,
.footer .brand__text strong {
  color: var(--on-dark);
}

.footer .brand__text small {
  color: rgba(237, 231, 219, 0.42);
}

.footer__about {
  margin-top: 16px;
  max-width: 34ch;
  line-height: 1.95;
  color: rgba(237, 231, 219, 0.5);
  font-size: 13px;
}

.footer h4 {
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: rgba(237, 231, 219, 0.45);
  font-weight: 600;
  margin-bottom: 14px;
}

.footer__list li {
  padding-block: 5px;
}

.footer__list a:hover {
  color: #fff;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 22px;
  font-size: 12.5px;
  color: rgba(237, 231, 219, 0.38);
}

.footer__bottom nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer__bottom a:hover {
  color: #fff;
}

/* ---------- 10 行业页 ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(30px, 4vw, 56px) clamp(38px, 5vw, 68px);
  border-bottom: 1px solid var(--line);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.4;
  -webkit-mask-image: radial-gradient(80% 80% at 90% 10%, #000, transparent 70%);
  mask-image: radial-gradient(80% 80% at 90% 10%, #000, transparent 70%);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--ink-3);
}

.breadcrumb a:hover {
  color: var(--clay);
}

.breadcrumb span {
  opacity: 0.5;
}

.page-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(20px, 4vw, 56px);
  align-items: end;
  margin-top: 18px;
}

.page-hero h1 {
  font-family: var(--serif);
  font-size: clamp(31px, 4.1vw, 52px);
  font-weight: 600;
  line-height: 1.26;
  margin-top: 18px;
  max-width: 20ch;
}

.page-hero__lead {
  margin-top: 18px;
  max-width: 54ch;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.95;
}

.page-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.tag {
  font-size: 12px;
  padding: 4px 11px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  color: var(--ink-2);
  white-space: nowrap;
}

.page-hero__num {
  font-family: var(--serif);
  font-size: clamp(84px, 13vw, 168px);
  line-height: 0.75;
  color: rgba(23, 26, 24, 0.07);
  letter-spacing: -0.02em;
  white-space: nowrap;
  user-select: none;
}

.page-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.scope {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}

.scope__item {
  background: var(--raise);
  padding: clamp(20px, 2.6vw, 32px);
  transition: background 0.3s;
}

.scope__item:hover {
  background: #fff;
}

.scope__item .n {
  font-family: var(--serif);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--ink-3);
}

.scope__item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-top: 10px;
}

.scope__item p {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--ink-3);
}

.scope__item ul {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.scope__item ul li {
  font-size: 12px;
  color: var(--ink-2);
  background: var(--paper-2);
  padding: 2px 9px;
  border-radius: 999px;
}

.scope__item--cta {
  background: var(--pine);
  color: var(--on-dark);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
}

.scope__item--cta:hover {
  background: var(--pine-2);
}

.scope__item--cta h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
}

.scope__item--cta p {
  color: var(--on-dark-2);
}

.scope__item--cta .link-inline {
  color: var(--on-dark);
}

.guard-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 30px);
}

.guard {
  padding-top: 22px;
  border-top: 2px solid var(--ink);
}

.guard .n {
  font-family: var(--serif);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.guard h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  margin-top: 10px;
}

.guard p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-3);
}

.guard ul {
  margin-top: 14px;
  display: grid;
  gap: 7px;
}

.guard ul li {
  position: relative;
  padding-left: 14px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

.guard ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  background: var(--clay);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--raise);
  -webkit-overflow-scrolling: touch;
}

table.data {
  width: 100%;
  min-width: 580px;
  border-collapse: collapse;
  font-size: 14px;
}

table.data th,
table.data td {
  padding: 15px 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.8;
}

table.data thead th {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--ink-3);
  background: var(--paper-2);
  white-space: nowrap;
}

table.data tbody tr:last-child td {
  border-bottom: 0;
}

table.data td:first-child {
  font-weight: 700;
  white-space: nowrap;
}

.table-note {
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--ink-3);
  line-height: 1.8;
}

.audience {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.audience li {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  padding: 18px 20px;
  background: var(--raise);
  border: 1px solid var(--line);
  border-radius: var(--r);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.audience li .n {
  font-family: var(--serif);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--clay);
  padding-top: 5px;
  flex: none;
}

.note-block {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}

.note-block > div {
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--raise);
  border: 1px solid var(--line);
  border-left: 2px solid var(--clay);
}

.note-block h3 {
  font-size: 16px;
  font-weight: 700;
}

.note-block p,
.note-block li {
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--ink-3);
}

.note-block p {
  margin-top: 8px;
}

.note-block ul {
  margin-top: 10px;
  display: grid;
  gap: 6px;
}

.note-block ul li {
  position: relative;
  padding-left: 14px;
}

.note-block ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 4px;
  height: 4px;
  background: var(--ink-3);
}

.cross {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding: clamp(22px, 2.8vw, 34px);
  background: var(--raise);
  border: 1px solid var(--line-2);
  border-radius: var(--r);
}

.cross h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
}

.cross p {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--ink-3);
}

.link-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 600;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: color 0.25s;
}

.link-inline:hover {
  color: var(--clay);
}

/* FAQ */
.faq {
  border-top: 1px solid var(--line);
  max-width: 900px;
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 21px 0;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  list-style: none;
}

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

.faq summary:hover {
  color: var(--clay);
}

.faq summary::after {
  content: "";
  width: 9px;
  height: 9px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.3s var(--ease);
  flex: none;
  opacity: 0.6;
  margin-right: 4px;
}

.faq details[open] summary::after {
  transform: rotate(-135deg) translateY(-2px);
}

.faq__a {
  padding: 0 0 24px;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink-3);
}

.faq__a p + p {
  margin-top: 10px;
}

/* ---------- 11 隐私协议 ---------- */
.doc-hero {
  padding-block: clamp(30px, 4vw, 52px) clamp(24px, 3vw, 40px);
  border-bottom: 1px solid var(--line);
}

.doc-hero h1 {
  font-family: var(--serif);
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 600;
  line-height: 1.3;
  margin-top: 16px;
}

.doc-hero p {
  margin-top: 14px;
  max-width: 56ch;
  font-size: 14.5px;
  color: var(--ink-3);
  line-height: 1.95;
}

.doc__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 20px;
  font-size: 12.5px;
  color: var(--ink-3);
}

.doc {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(24px, 4vw, 60px);
  align-items: start;
  padding-block: clamp(36px, 4.4vw, 60px) clamp(56px, 6vw, 90px);
}

.doc__toc {
  position: sticky;
  top: 96px;
  font-size: 13px;
  border-left: 1px solid var(--line);
  padding-left: 16px;
}

.doc__toc h2 {
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--ink-3);
  font-weight: 600;
  margin-bottom: 10px;
}

.doc__toc a {
  display: block;
  padding: 5px 0;
  color: var(--ink-3);
  line-height: 1.6;
  transition: color 0.2s;
}

.doc__toc a:hover,
.doc__toc a.is-active {
  color: var(--clay);
}

.doc__body {
  max-width: 74ch;
}

.doc__body h2 {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.55;
  margin-top: 38px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 92px;
}

.doc__body h2:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.doc__body h3 {
  font-size: 15.5px;
  font-weight: 700;
  margin-top: 22px;
}

.doc__body p {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 2;
  color: var(--ink-2);
}

.doc__body ul {
  margin-top: 12px;
  display: grid;
  gap: 7px;
}

.doc__body ul li {
  position: relative;
  padding-left: 15px;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink-2);
}

.doc__body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 4px;
  height: 4px;
  background: var(--clay);
}

.doc__body strong {
  font-weight: 700;
  color: var(--ink);
}

.callout {
  margin-top: 18px;
  padding: 16px 18px;
  background: var(--paper-2);
  border-left: 2px solid var(--clay);
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

.doc__table {
  margin-top: 16px;
}

/* ---------- 12 动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.72s var(--ease), transform 0.72s var(--ease);
  transition-delay: var(--d, 0s);
}

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

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

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- 13 响应式 ---------- */
@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__visual {
    max-width: 440px;
  }

  .sec-head {
    grid-template-columns: 1fr;
    gap: 14px;
    align-items: start;
  }

  .lead__grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .lead__copy > p,
  .lead__points {
    max-width: 60ch;
  }

  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .guard-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .process {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 34px;
  }

  .step:nth-child(2n) {
    padding-right: 0;
  }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    top: 65px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 55;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px clamp(20px, 5vw, 48px) 40px;
    background: var(--paper);
    border-top: 1px solid var(--line);
    overflow-y: auto;
  }

  body.nav-open .nav {
    display: flex;
    animation: navIn 0.26s var(--ease);
  }

  @keyframes navIn {
    from {
      opacity: 0;
      transform: translateY(-8px);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }

  .nav > [data-nav-industries] {
    display: block;
  }

  .nav__link {
    font-family: var(--serif);
    font-size: 19px;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    color: var(--ink);
  }

  .nav__link::after {
    display: none;
  }

  .nav__link--cta {
    margin-top: 22px;
    text-align: center;
    justify-content: center;
    display: flex;
    border-radius: var(--r);
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
    padding: 14px 20px;
    font-family: var(--sans);
    font-size: 16px;
  }

  .nav-toggle {
    display: block;
  }

  .header__inner {
    min-height: 64px;
  }

  .process {
    grid-template-columns: 1fr;
    row-gap: 0;
  }

  .step {
    border-top: 0;
    border-left: 1px solid var(--line-2);
    padding: 0 0 30px 26px;
    margin-left: 11px;
  }

  .step:last-child {
    padding-bottom: 0;
  }

  .step__n {
    top: 0;
    left: -11px;
    min-width: 22px;
    width: 22px;
    height: 22px;
    padding-inline: 0;
    border-radius: 50%;
    font-size: 9.5px;
    letter-spacing: 0;
  }

  .step h3 {
    padding-top: 0;
  }

  .scope {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .audience,
  .note-block,
  .value-grid {
    grid-template-columns: 1fr;
  }

  .doc {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .doc__toc {
    position: static;
    border-left: 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 14px 0;
    display: flex;
    flex-wrap: wrap;
    gap: 4px 18px;
  }

  .doc__toc h2 {
    width: 100%;
    margin-bottom: 4px;
  }

  .doc__toc a {
    padding: 2px 0;
    font-size: 12.5px;
  }

  .page-hero__num {
    display: none;
  }

  .page-hero__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 15.5px;
  }

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

  .claim-bar ul {
    grid-template-columns: 1fr;
  }

  .claim-bar li {
    border-left: 0;
    padding: 13px 0;
    border-top: 1px solid var(--line);
  }

  .claim-bar li:first-child {
    border-top: 0;
  }

  .hero__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .hero__stats > div:last-child {
    grid-column: 1 / -1;
  }

  .lead-form__grid {
    grid-template-columns: 1fr;
  }

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

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

  .footer__top > div:first-child {
    grid-column: 1 / -1;
  }

  .page-hero h1 {
    max-width: none;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 30px;
    line-height: 1.32;
  }

  .btn {
    width: 100%;
  }

  .hero__actions .btn,
  .page-hero__actions .btn {
    width: 100%;
  }

  .cross .btn {
    width: 100%;
  }

  .doc__body h2 {
    font-size: 19px;
  }

  .filecard__foot {
    font-size: 11px;
  }

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