@font-face {
  font-family: "Noto Sans SC";
  src:
    url("assets/NotoSansSC-Homepage.woff2?v=20261021-icp") format("woff2"),
    local("Noto Sans SC"),
    local("Noto Sans CJK SC");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --charcoal: #171717;
  --graphite: #2b2b2b;
  --paper: #f6f6f6;
  --white: #ffffff;
  --orange: #ff633c;
  --orange-text: #c83b2e;
  --ink: #171717;
  --muted: #5d6062;
  --dark-muted: #b7b9bb;
  --line: #d5d6d6;
  --line-dark: #4a4a4a;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --header-height: 72px;
  --wrap: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 450;
  line-height: 1.76;
  text-rendering: optimizeLegibility;
}

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

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

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background: var(--charcoal);
  color: var(--white);
  z-index: 100;
}

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

/* ---------- 字标 ---------- */

.wordmark {
  display: inline-flex;
  align-items: baseline;
  font-size: 1.3rem;
  letter-spacing: -0.015em;
  font-weight: 850;
  line-height: 1;
}

.wm-char {
  font-size: 1em;
  font-weight: 850;
}

.wm-mark {
  width: auto;
  height: 1.86em;
  margin: 0 0.02em;
  transform: translateY(0.17em);
}

/* ---------- 头部 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--header-height);
  padding: 0 clamp(18px, 5vw, 48px);
  background: rgba(246, 246, 246, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.brand-sub {
  font-size: 0.8125rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 26px;
  margin-left: auto;
  font-size: 0.9375rem;
  color: var(--muted);
}

.nav-links a {
  padding: 6px 0;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.nav-links a:hover {
  color: var(--ink);
  border-bottom-color: var(--orange);
}

.header-contact {
  flex-shrink: 0;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--charcoal);
  color: var(--white);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: opacity 0.18s ease;
}

.header-contact:hover {
  opacity: 0.85;
}

/* ---------- 通用区块 ---------- */

.section {
  padding: clamp(64px, 9vw, 112px) 0;
}

.section-inner {
  width: min(100% - clamp(36px, 9vw, 96px), var(--wrap));
  margin: 0 auto;
}

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

.section-heading {
  max-width: 44rem;
  margin-bottom: clamp(36px, 5vw, 56px);
}

.section-heading.wide {
  max-width: 52rem;
}

.section-heading h2 {
  margin: 14px 0 14px;
  font-size: clamp(1.85rem, 3.7vw, 2.75rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.section-heading p {
  color: var(--muted);
  font-size: 1.0625rem;
}

.eyebrow {
  color: var(--orange-text);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-heading p.eyebrow,
.service-group-heading p.eyebrow {
  color: var(--orange-text);
  font-size: 0.8125rem;
  font-weight: 700;
}

/* ---------- Hero ---------- */

.hero {
  padding: clamp(56px, 8vw, 104px) 0 clamp(52px, 7vw, 88px);
}

.hero-inner {
  width: min(100% - clamp(36px, 9vw, 96px), var(--wrap));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  gap: clamp(28px, 3.3vw, 48px);
  align-items: center;
}

.hero h1 {
  margin: 18px 0 22px;
  font-size: clamp(2.15rem, 5vw, 3.75rem);
  font-weight: 850;
  line-height: 1.16;
  letter-spacing: -0.03em;
}

.hero-emphasis {
  position: relative;
  display: inline-block;
  z-index: 0;
  color: var(--orange-text);
}

.hero-emphasis::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: -3%;
  bottom: -0.04em;
  left: -3%;
  height: 0.14em;
  border-radius: 999px;
  background: linear-gradient(105deg, #ff7a32 0%, #ff4f3b 100%);
}

.hero-copy {
  max-width: 34rem;
  color: var(--muted);
  font-size: 1.0625rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.9688rem;
  font-weight: 650;
  transition: opacity 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.button.primary {
  background: var(--charcoal);
  color: var(--white);
}

.button.primary:hover {
  opacity: 0.86;
}

.button.secondary {
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
}

.button.secondary:hover {
  border-color: var(--ink);
}

.hero-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-topics li {
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--muted);
  font-size: 0.8125rem;
}

.hero-media {
  margin: 0;
}

.hero-founders {
  align-self: center;
}

.founders-photo-wrap {
  position: relative;
  isolation: isolate;
}

.founders-photo-wrap::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 17% 3% 10%;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(213, 214, 214, 0.36), rgba(246, 246, 246, 0) 70%);
}

.founders-photo-wrap picture {
  display: block;
}

.founders-photo {
  display: block;
  width: 100%;
  height: auto;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 86%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 86%, transparent 100%);
}

.hero-media .founders-caption {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: -24px 0 0;
  padding: 0 4% 0 12%;
  color: var(--ink);
}

.founder-label {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
}

.founder-name {
  font-size: 1.0625rem;
  font-weight: 750;
  letter-spacing: 0.02em;
}

.founder-role {
  padding-left: 8px;
  border-left: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.25;
}

.founder-label::after {
  content: "";
  position: absolute;
  bottom: -12px;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: var(--orange);
}

/* ---------- 经验条 ---------- */

.credibility-strip {
  background: var(--charcoal);
  color: var(--white);
  padding: clamp(28px, 4vw, 40px) 0;
}

.credibility-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.credibility-grid p {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.credibility-grid strong {
  font-size: 1.0625rem;
  font-weight: 700;
}

.credibility-grid span {
  color: var(--dark-muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ---------- 适合谁 ---------- */

.fit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.fit-item {
  padding: clamp(24px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
}

.item-index {
  color: var(--orange-text);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.fit-item h3 {
  margin: 10px 0 8px;
  font-size: 1.1875rem;
  font-weight: 700;
}

.fit-item p {
  color: var(--muted);
  font-size: 0.9688rem;
}

.fit-note {
  margin-top: 26px;
  padding: 16px 20px;
  border-left: 3px solid var(--orange);
  background: rgba(255, 99, 60, 0.06);
  color: var(--muted);
  font-size: 0.9375rem;
}

/* ---------- 服务体系 ---------- */

.service-group-heading {
  margin: clamp(38px, 5vw, 58px) 0 24px;
}

.service-group-heading:first-of-type {
  margin-top: 0;
}

.service-group-heading h3 {
  margin: 10px 0 6px;
  font-size: clamp(1.3rem, 2.4vw, 1.65rem);
  font-weight: 750;
  letter-spacing: -0.01em;
}

.service-group-heading p {
  color: var(--muted);
  font-size: 0.9688rem;
}

.service-grid {
  display: grid;
  gap: 18px;
}

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

.service-grid-tiers,
.service-grid-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(22px, 2.6vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
}

.service-label {
  color: var(--muted);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 750;
  letter-spacing: -0.01em;
}

.service-price {
  color: var(--ink);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.service-price span {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 500;
}

.price-formula {
  margin-top: -4px;
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.01em;
}

.credit-note {
  margin-top: 26px;
  padding: 15px 20px;
  border-left: 3px solid var(--orange);
  background: rgba(255, 99, 60, 0.06);
  color: var(--muted);
  font-size: 0.9375rem;
}

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

.service-card > p {
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.service-card > .service-label {
  font-size: 0.75rem;
}

.service-card > .service-price {
  margin-top: 5px;
  color: var(--ink);
  font-size: clamp(1.55rem, 2.2vw, 1.85rem);
  font-weight: 800;
  line-height: 1.35;
}

.service-card > .price-formula {
  font-size: 0.75rem;
}

.service-fit {
  margin: 14px 0 8px;
  padding: 14px 15px;
  border-radius: var(--radius-sm);
  background: var(--paper);
}

.service-fit h4,
.service-delivery h4 {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.06em;
}

.service-fit p {
  color: var(--ink);
  font-size: 0.9688rem;
  font-weight: 700;
  line-height: 1.6;
}

.service-fit > span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.service-grid-three .service-fit {
  min-height: 108px;
}

.service-delivery {
  padding: 8px 0 22px;
}

.service-delivery ul {
  display: grid;
  gap: 16px;
  margin: 12px 0 0;
}

.service-delivery li {
  position: relative;
  padding-left: 13px;
}

.service-delivery li::before {
  content: "";
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 4px;
  height: 4px;
  border-radius: 1px;
  background: var(--orange);
}

.service-delivery strong {
  display: block;
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.55;
}

.service-delivery span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.65;
}

.service-boundary strong {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 650;
}

.service-card strong {
  color: var(--ink);
  font-weight: 650;
}

.service-boundary {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 0.875rem !important;
}

.service-split-line {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.875rem;
}

/* ---------- 团队 ---------- */

.team-profiles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(28px, 4vw, 48px);
}

.team-profile {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding-top: 22px;
  border-top: 2px solid var(--ink);
}

.team-profile header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.team-profile h3 {
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1.4;
}

.team-profile header > span {
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.8125rem;
}

.team-focus {
  margin: 8px 0 22px;
  font-size: 1.0625rem;
  font-weight: 650;
}

.team-experience {
  display: grid;
  gap: 20px;
}

.team-experience strong {
  font-size: 0.9375rem;
  font-weight: 700;
}

.team-experience p {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.team-source-link {
  align-self: flex-start;
  margin-top: 24px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8125rem;
}

.team-source-link:hover {
  color: var(--orange-text);
  border-color: var(--orange);
}

.team-delivery {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  margin-top: 42px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
}

.team-delivery h3 {
  margin: 10px 0 12px;
  font-size: 1.2rem;
  font-weight: 750;
  line-height: 1.45;
}

.team-delivery > div > p:last-child {
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.team-scene {
  margin: 0;
}

.team-scene img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.team-scene figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.8125rem;
}

.experience-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.timeline {
  display: grid;
  gap: 22px;
  margin-top: 8px;
}

.timeline article h3 {
  margin-bottom: 6px;
  font-size: 1.125rem;
  font-weight: 700;
}

.timeline article p {
  color: var(--muted);
  font-size: 0.9688rem;
}

/* ---------- 品牌墙 ---------- */

.brand-wall {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.brand-wall-title {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.8125rem;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.brand-wall-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.brand-wall-grid li {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 104px;
  padding: 18px 16px;
  background: var(--white);
  overflow: hidden;
  transition: background 0.25s ease;
}

.brand-name {
  color: var(--ink);
  font-size: 1.0625rem;
  font-weight: 750;
  letter-spacing: 0.02em;
  text-align: center;
  transition: opacity 0.26s ease, transform 0.26s ease;
}

/* 悬停时浮现的品牌表述：一个卖点一行，逐条浮现 */
.brand-note {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 18px 22px;
  text-align: center;
  pointer-events: none;
}

.brand-tag {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.01em;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* 换成品牌 logo 图片后生效：统一高度 + 灰度，悬停还原彩色 */
.brand-wall-grid img {
  width: auto;
  max-width: 100%;
  max-height: 38px;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.62;
  transition: filter 0.2s ease, opacity 0.2s ease;
}

/* 有鼠标的设备：名称上移淡出，表述逐条自下浮现 */
@media (hover: hover) and (pointer: fine) {
  .brand-wall-grid li:hover {
    background: #fafafa;
  }

  .brand-wall-grid li:hover .brand-name {
    opacity: 0;
    transform: translateY(-12px);
  }

  .brand-wall-grid li:hover .brand-tag {
    opacity: 1;
    transform: translateY(0);
  }

  .brand-wall-grid li:hover .brand-tag:nth-child(2) {
    transition-delay: 0.07s;
  }

  .brand-wall-grid li:hover .brand-tag:nth-child(3) {
    transition-delay: 0.14s;
  }

  .brand-wall-grid li:hover img {
    filter: grayscale(0);
    opacity: 1;
  }
}

/* 触屏设备：没有悬停，名称与表述同时显示 */
@media (hover: none) {
  .brand-wall-grid li {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 6px;
    min-height: 0;
    padding: 16px 14px;
  }

  .brand-name {
    font-size: 1rem;
    text-align: left;
  }

  .brand-note {
    position: static;
    align-items: flex-start;
    gap: 2px;
    padding: 0;
    text-align: left;
  }

  .brand-tag {
    font-size: 0.8125rem;
    line-height: 1.5;
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 720px) {
  .brand-wall-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .brand-wall {
    margin-top: 36px;
    padding-top: 22px;
  }
}

/* ---------- 团队照片 ---------- */


.experience-photo {
  margin: 0;
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.experience-photo img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.experience-photo figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.8125rem;
}

/* ---------- 工作方式 ---------- */

.method-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: clamp(38px, 5vw, 56px);
}

.method-steps article {
  padding: clamp(20px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
}

.method-steps span {
  color: var(--orange-text);
  font-size: 0.8125rem;
  font-weight: 800;
}

.method-steps h3 {
  margin: 8px 0 6px;
  font-size: 1.125rem;
  font-weight: 750;
}

.method-steps p {
  color: var(--muted);
  font-size: 0.9375rem;
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.insight-grid article {
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  background: var(--charcoal);
  color: var(--white);
}

.insight-grid h3 {
  margin-bottom: 6px;
  font-size: 1.0625rem;
  font-weight: 700;
}

.insight-grid p {
  color: var(--dark-muted);
  font-size: 0.9375rem;
}

/* ---------- 联系 ---------- */

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

.contact-heading h2 {
  margin: 12px 0 12px;
  font-size: clamp(1.85rem, 3.7vw, 2.6rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.contact-heading p {
  max-width: 40rem;
  color: var(--dark-muted);
  font-size: 1.0625rem;
}

.contact-heading .eyebrow {
  color: var(--orange);
}

.qr-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: clamp(32px, 4vw, 48px);
}

.qr-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  padding: 24px 20px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.04);
}

.qr-image-wrap {
  position: relative;
  display: block;
  flex-shrink: 0;
  width: min(100%, 176px);
  aspect-ratio: 1;
  padding: 8px;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--white);
}

.qr-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qr-image-wrap:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 5px;
}

/* 只调整原图在方形窗口内的显示范围，保留二维码原始像素与留白。 */
.qr-video-lijie,
.qr-video-guohansen {
  padding: 0;
}

.qr-video-lijie img,
.qr-video-guohansen img {
  position: absolute;
  max-width: none;
  height: auto;
}

.qr-video-lijie img {
  width: 134.634146%;
  left: -18.536585%;
  top: -46.95122%;
}

.qr-video-guohansen img {
  width: 138.846154%;
  left: -20.192308%;
  top: -49.038462%;
}

.qr-help {
  margin-top: 18px;
  color: var(--dark-muted);
  font-size: 0.8125rem;
  text-align: center;
}

.qr-label {
  color: var(--orange);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.qr-card h3 {
  margin: 4px 0 4px;
  font-size: 1.0625rem;
  font-weight: 700;
}

.qr-card p {
  color: var(--dark-muted);
  font-size: 0.8125rem;
  line-height: 1.55;
}

/* ---------- 页脚 ---------- */

.site-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 44px 24px;
  background: #101010;
  color: var(--dark-muted);
}

.site-footer .wordmark {
  font-size: 1.75rem;
}

.site-footer .wm-char {
  color: var(--white);
}

.site-footer p {
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}

/* 备案主体名称：ICP 备案要求网站首页体现备案时所填的网站名称 */
.site-footer .legal {
  font-size: 0.75rem;
  letter-spacing: 0.01em;
  color: #8f9194;
}

.site-footer .filing {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: #aeb1b6;
}

.site-footer .filing a {
  display: inline-block;
  padding: 3px 0;
  text-underline-offset: 4px;
}

.site-footer .filing a:hover,
.site-footer .filing a:focus-visible {
  color: #f6f6f6;
  text-decoration: underline;
}

/* ---------- 响应式 ---------- */

@media (max-width: 980px) {
  .brand-sub {
    display: none;
  }

  .nav-links {
    gap: 16px;
    font-size: 0.875rem;
  }

  .hero-inner,
  .experience-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .experience-photo {
    position: static;
  }

  .service-grid-tiers,
  .service-grid-three,
  .method-steps,
  .qr-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-founders {
    width: min(100%, 660px);
    margin: 4px auto 14px;
  }

  .hero-media .founders-caption {
    margin-top: -28px;
  }
}

@media (max-width: 720px) {
  .hero-media .founders-caption {
    margin-top: -12px;
    gap: 8px;
    padding: 0 3% 0 9%;
  }

  .founder-label {
    gap: 6px;
  }

  .founder-name {
    font-size: 0.9375rem;
  }

  .founder-role {
    padding-left: 6px;
    font-size: 0.75rem;
  }

  .nav-links {
    display: none;
  }

  .brand-sub {
    display: none;
  }

  .site-header {
    justify-content: space-between;
  }

  .header-contact {
    margin-left: auto;
  }

  .credibility-grid,
  .fit-grid,
  .service-grid-two,
  .service-grid-tiers,
  .service-grid-three,
  .method-steps,
  .insight-grid,
  .team-profiles,
  .team-delivery,
  .qr-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .team-delivery {
    padding: 22px;
    gap: 22px;
  }

  .section {
    padding: clamp(52px, 12vw, 72px) 0;
  }

  .qr-card {
    gap: 14px;
  }

  .wordmark {
    font-size: 1.15rem;
  }
}

/* ---------- 文字层级与阅读节奏 · 2026-10-15 ---------- */

body {
  font-weight: 400;
  line-break: strict;
}

.site-header {
  gap: 32px;
}

.brand {
  gap: 14px;
}

.brand-sub {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.035em;
}

.nav-links {
  gap: 30px;
  font-size: 0.875rem;
  letter-spacing: 0.035em;
}

.nav-links a {
  padding: 9px 0;
  line-height: 1.4;
}

.header-contact {
  padding: 10px 22px;
  font-size: 0.875rem;
}

.eyebrow,
.section-heading p.eyebrow,
.service-group-heading p.eyebrow {
  font-size: 0.78125rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.1em;
}

.hero-principals {
  margin-top: 14px;
  font-size: 0.875rem;
  font-weight: 450;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.hero-topics {
  gap: 10px;
}

.hero-topics li {
  padding: 7px 15px;
  font-size: 0.78125rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
}

.founder-role {
  font-size: 0.78125rem;
  font-weight: 400;
  letter-spacing: 0.035em;
}

.section-heading {
  margin-bottom: clamp(42px, 5vw, 62px);
}

.section-heading h2 {
  margin-top: 18px;
  margin-bottom: 20px;
  text-wrap: balance;
}

.section-heading > p:not(.eyebrow),
.contact-heading > p:not(.eyebrow) {
  max-width: 40em;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.95;
  letter-spacing: 0.015em;
  text-wrap: pretty;
}

.section-intro > span {
  display: block;
  text-wrap: balance;
}

.section-intro > span + span {
  margin-top: 6px;
}

.credibility-grid {
  gap: 32px;
}

.credibility-grid > p {
  gap: 12px;
  padding-right: 28px;
}

.credibility-grid > p + p {
  padding-left: 30px;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.credibility-grid strong {
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.credibility-grid span {
  max-width: 21em;
  font-size: 0.84375rem;
  line-height: 1.9;
  font-weight: 400;
  letter-spacing: 0.015em;
}

.fit-grid {
  gap: 22px;
}

.fit-item {
  padding: clamp(26px, 3.3vw, 36px);
}

.item-index {
  font-size: 0.75rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.fit-item h3 {
  margin: 16px 0 14px;
  font-weight: 650;
  line-height: 1.5;
}

.fit-item p {
  max-width: 29em;
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.95;
  letter-spacing: 0.015em;
  text-wrap: balance;
}

.fit-note,
.credit-note {
  margin-top: 30px;
  padding: 20px 24px;
  border-left-width: 2px;
  font-size: 0.875rem;
  line-height: 1.9;
  letter-spacing: 0.015em;
}

.team-profiles {
  column-gap: clamp(40px, 5vw, 72px);
}

.team-profile {
  padding-top: 28px;
  border-top-width: 1px;
}

.team-profile header {
  gap: 16px;
}

.team-profile header > span {
  padding: 4px 11px;
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0.025em;
}

.team-focus {
  margin: 12px 0 28px;
  font-size: 0.96875rem;
  font-weight: 500;
  letter-spacing: 0.025em;
}

.team-experience {
  counter-reset: experience;
  gap: 0;
}

.team-experience li {
  counter-increment: experience;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  column-gap: 12px;
  row-gap: 10px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.team-experience li::before {
  content: counter(experience, decimal-leading-zero);
  grid-column: 1;
  grid-row: 1 / span 2;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.6875rem;
  line-height: 1.5;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  opacity: 0.7;
}

.team-experience strong {
  grid-column: 2;
  font-size: 0.96875rem;
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0.02em;
  text-wrap: balance;
}

.team-experience p {
  grid-column: 2;
  max-width: 29em;
  margin-top: 0;
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.95;
  letter-spacing: 0.015em;
  text-wrap: balance;
}

.team-source-link {
  margin-top: 8px;
  padding-bottom: 6px;
  font-size: 0.78125rem;
  line-height: 1.8;
  letter-spacing: 0.025em;
}

.team-delivery {
  margin-top: 56px;
  padding: clamp(26px, 3.4vw, 40px);
  gap: 40px;
}

.team-delivery h3 {
  margin: 16px 0 22px;
  font-weight: 650;
}

.team-delivery > div > p:not(.eyebrow) {
  max-width: 32em;
  color: var(--muted);
  font-size: 0.90625rem;
  font-weight: 400;
  line-height: 1.95;
  letter-spacing: 0.015em;
  text-wrap: pretty;
}

.team-role-summary > span {
  display: block;
}

.team-role-summary > span + span {
  margin-top: 7px;
}

.team-delivery-summary {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.team-scene figcaption {
  margin-top: 12px;
  font-size: 0.78125rem;
  line-height: 1.8;
  letter-spacing: 0.025em;
}

.brand-wall-title {
  margin-bottom: 22px;
  font-size: 0.78125rem;
  font-weight: 500;
}

.brand-note {
  gap: 8px;
}

.brand-tag {
  font-size: 0.84375rem;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0.025em;
}

.method-steps article {
  padding: 28px 24px;
}

.method-steps h3 {
  margin: 16px 0 13px;
  font-weight: 650;
}

.method-steps p {
  max-width: 15em;
  font-size: 0.90625rem;
  font-weight: 400;
  line-height: 1.95;
  letter-spacing: 0.015em;
  text-wrap: balance;
}

.insight-grid {
  gap: 20px;
}

.insight-grid article {
  padding: 26px 28px;
}

.insight-grid h3 {
  margin-bottom: 12px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
}

.insight-grid p {
  font-size: 0.90625rem;
  line-height: 1.9;
  letter-spacing: 0.015em;
}

.service-group-heading {
  margin-top: clamp(52px, 6vw, 76px);
  margin-bottom: 32px;
}

.service-group-heading h3 {
  margin-top: 15px;
  margin-bottom: 15px;
}

.service-group-heading > p:not(.eyebrow) {
  max-width: 46em;
  font-size: 0.9375rem;
  line-height: 1.95;
  letter-spacing: 0.015em;
  text-wrap: pretty;
}

.service-grid {
  gap: 22px;
}

.service-card {
  gap: 0;
  padding: clamp(24px, 2.6vw, 32px);
}

.service-card > .service-label {
  margin-bottom: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.08em;
}

.service-card h3 {
  font-weight: 650;
  line-height: 1.55;
}

.service-card > .service-price {
  margin-top: 18px;
  font-size: clamp(1.6rem, 2.2vw, 1.85rem);
  font-weight: 750;
  font-variant-numeric: tabular-nums;
}

.service-price span {
  font-size: 0.8125rem;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0.01em;
}

.service-card > .price-formula {
  margin-top: 9px;
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0.03em;
}

.service-fit,
.service-grid-three .service-fit {
  min-height: 128px;
  margin: 28px 0 26px;
  padding: 18px;
}

.service-fit h4,
.service-delivery h4 {
  margin-bottom: 12px;
  font-size: 0.75rem;
  font-weight: 450;
  line-height: 1.5;
  letter-spacing: 0.08em;
}

.service-fit p {
  font-size: 0.9375rem;
  font-weight: 550;
  line-height: 1.85;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

.service-fit > span {
  margin-top: 10px;
  font-size: 0.78125rem;
  line-height: 1.85;
}

.service-delivery {
  padding: 0 0 28px;
}

.service-delivery ul {
  gap: 20px;
  margin-top: 18px;
}

.service-delivery li {
  padding-left: 13px;
}

.service-delivery li::before {
  top: 0.65em;
  width: 3px;
  height: 3px;
  opacity: 0.7;
}

.service-delivery strong {
  font-size: 0.90625rem;
  font-weight: 550;
  line-height: 1.65;
}

.service-delivery span {
  margin-top: 8px;
  font-size: 0.84375rem;
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

.service-card > .service-boundary {
  padding-top: 20px;
  border-top-style: solid;
  font-size: 0.84375rem !important;
  font-weight: 400;
  line-height: 1.9;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

.service-boundary strong {
  margin-bottom: 10px;
  font-size: 0.75rem;
  font-weight: 450;
  letter-spacing: 0.05em;
}

.credit-note {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 24px;
}

.credit-note strong {
  font-size: 0.8125rem;
  font-weight: 550;
  letter-spacing: 0.06em;
}

.service-split-line {
  margin-top: 22px;
  max-width: 48em;
  font-size: 0.8125rem;
  line-height: 1.9;
  letter-spacing: 0.02em;
}

.contact-heading h2 {
  margin: 18px 0 22px;
}

.contact-heading .section-intro > span:first-child {
  color: var(--ink);
}

.qr-card {
  gap: 24px;
  padding: 30px 22px;
}

.qr-card > div {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.qr-card .qr-label {
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 450;
  line-height: 1.5;
  letter-spacing: 0.12em;
}

.qr-card h3 {
  margin: 0 0 14px;
  font-size: 1.125rem;
  font-weight: 650;
  line-height: 1.5;
  letter-spacing: 0.025em;
}

.qr-card > div > p:last-child {
  max-width: 17em;
  font-size: 0.8125rem;
  font-weight: 400;
  line-height: 1.9;
  letter-spacing: 0.02em;
}

.qr-help {
  margin-top: 26px;
  font-size: 0.75rem;
  line-height: 1.8;
  letter-spacing: 0.04em;
}

.site-footer {
  gap: 18px;
  padding-block: 54px 42px;
}

.site-footer p {
  font-size: 0.8125rem;
  font-weight: 400;
  line-height: 1.9;
  letter-spacing: 0.04em;
  text-align: center;
}

.site-footer .legal {
  margin-top: 8px;
  font-size: 0.75rem;
  letter-spacing: 0.035em;
}

@media (max-width: 980px) {
  .site-header {
    gap: 24px;
  }

  .nav-links {
    gap: 20px;
  }

  .team-profiles {
    column-gap: 36px;
  }

  .team-experience li {
    grid-template-columns: 20px minmax(0, 1fr);
    column-gap: 8px;
  }
}

@media (max-width: 720px) {
  .section-heading > p:not(.eyebrow),
  .contact-heading > p:not(.eyebrow) {
    font-size: 0.9375rem;
    line-height: 1.95;
  }

  .credibility-grid {
    gap: 0;
  }

  .credibility-grid > p {
    padding: 22px 0;
  }

  .credibility-grid > p:first-child {
    padding-top: 0;
  }

  .credibility-grid > p:last-child {
    padding-bottom: 0;
  }

  .credibility-grid > p + p {
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .team-profiles {
    row-gap: 52px;
  }

  .team-experience li {
    padding-block: 22px;
  }

  .team-experience p {
    font-size: 0.90625rem;
  }

  .team-delivery {
    margin-top: 38px;
    padding: 26px;
    gap: 28px;
  }

  .brand-wall-grid li {
    min-height: 116px;
  }

  .service-card {
    padding: 28px;
  }

  .service-fit,
  .service-grid-three .service-fit {
    min-height: 0;
  }

  .credit-note {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .qr-card {
    padding: 30px 24px;
    gap: 24px;
  }
}