@import "tailwindcss";

:root {
  --cream: #f5f2ea;
  --ink: #1a1a1a;
  --orange: #e05d3e;
  --orange-dark: #bd452b;
  --sand: #d8c6c6;
  --white: #fffef9;
  --muted: #6c6a65;
  --line: rgba(26, 26, 26, 0.13);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.72;
}

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

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

.topbar {
  position: sticky;
  z-index: 50;
  top: 0;
  height: 78px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  padding: 0 max(32px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(245, 242, 234, 0.92);
  backdrop-filter: blur(18px);
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  width: fit-content;
}

.logo span {
  font-family: "Songti SC", "STSong", serif;
  font-size: 25px;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.logo small {
  color: var(--orange);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.topbar nav {
  display: flex;
  gap: 34px;
  font-size: 13px;
}

.topbar nav a {
  position: relative;
  padding: 27px 0 24px;
}

.topbar nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 21px;
  left: 0;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease;
}

.topbar nav a:hover::after {
  transform: scaleX(1);
}

.nav-cta {
  justify-self: end;
  padding: 9px 18px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  transition: all 0.2s ease;
}

.nav-cta:hover {
  background: var(--ink);
  color: var(--cream);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(460px, 0.95fr);
  gap: 70px;
  min-height: calc(100vh - 78px);
  padding: 86px max(32px, calc((100vw - var(--max)) / 2)) 72px;
  overflow: hidden;
}

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

.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 32px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 254, 249, 0.56);
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  box-shadow: 0 7px 22px rgba(26, 26, 26, 0.05);
}

.pill i,
.float-tag i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
}

.hero-kicker {
  margin: 0;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(35px, 4vw, 56px);
  font-weight: 700;
  line-height: 1.15;
}

.hero h1 {
  margin: 28px 0 0;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(100px, 11vw, 162px);
  font-weight: 900;
  letter-spacing: -0.075em;
  line-height: 0.9;
}

.hero h2 {
  margin: 23px 0 0;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(24px, 2.3vw, 34px);
  font-weight: 700;
}

.hero-description {
  max-width: 650px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.hero-description strong {
  color: var(--orange);
  font-weight: 800;
}

.hero-actions,
.next-actions,
.system-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  min-height: 47px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--orange);
  color: white;
  box-shadow: 0 12px 30px rgba(224, 93, 62, 0.22);
}

.button.primary:hover,
.button.orange:hover {
  background: var(--orange-dark);
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 254, 249, 0.56);
}

.hero-proof {
  display: flex;
  gap: 26px;
  margin-top: 37px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.hero-proof span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-proof span::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--ink);
}

.hero-portrait {
  position: relative;
  align-self: center;
  min-height: 640px;
}

.portrait-card {
  position: absolute;
  inset: 34px 0 40px 56px;
  overflow: hidden;
  border-radius: 44px 44px 10px 44px;
  background: var(--sand);
  box-shadow: 0 28px 70px rgba(26, 26, 26, 0.16);
}

.portrait-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
}

.portrait-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.16) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
  pointer-events: none;
}

.portrait-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26, 26, 26, 0.42), transparent 35%);
}

.float-tag {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid rgba(26, 26, 26, 0.1);
  border-radius: 999px;
  background: rgba(255, 254, 249, 0.94);
  font-size: 11px;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(26, 26, 26, 0.09);
}

.tag-one {
  top: 96px;
  left: 0;
}

.tag-two {
  top: 260px;
  right: -34px;
}

.tag-three {
  right: 22px;
  bottom: 76px;
}

.tag-two i {
  background: var(--ink);
}

.portrait-caption {
  position: absolute;
  z-index: 3;
  right: 30px;
  bottom: 58px;
  left: 88px;
  color: white;
}

.portrait-caption span {
  display: block;
  color: rgba(255, 255, 255, 0.56);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.portrait-caption strong {
  display: block;
  margin-top: 4px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 19px;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0 max(32px, calc((100vw - var(--max)) / 2));
  background: var(--ink);
  color: var(--cream);
}

.metric-strip > div {
  padding: 36px 28px 32px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.metric-strip > div:first-child {
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.metric-strip strong {
  font-family: Georgia, serif;
  font-size: 42px;
  font-weight: 400;
  line-height: 1;
}

.metric-strip strong span {
  margin-left: 2px;
  color: var(--orange);
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 15px;
}

.metric-strip p {
  margin: 9px 0 0;
  color: rgba(255, 255, 255, 0.54);
  font-size: 12px;
}

.section {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  padding: 120px 0;
}

.section-heading {
  margin-bottom: 58px;
}

.section-heading.split,
.project-heading {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 80px;
  align-items: end;
}

.section-no {
  margin: 0 0 18px;
  color: var(--orange);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-no.inverted {
  color: #ef987f;
}

.section-heading h2,
.about-copy h2,
.system-copy h2,
.next h2 {
  margin: 0;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(40px, 4.6vw, 64px);
  font-weight: 900;
  letter-spacing: -0.055em;
  line-height: 1.34;
}

.section-heading h2 span,
.next h2 span {
  color: var(--orange);
}

.section-heading > p {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 14px;
}

.audience-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.audience-tags span {
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 254, 249, 0.52);
  color: var(--muted);
  font-size: 11px;
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.pain-grid article {
  display: flex;
  flex-direction: column;
  min-height: 315px;
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 254, 249, 0.64);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.pain-grid article:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 45px rgba(26, 26, 26, 0.08);
}

.pain-grid article:nth-child(3) {
  background: var(--orange);
  color: white;
}

.pain-number {
  color: var(--orange);
  font-family: Georgia, serif;
  font-size: 13px;
}

.pain-grid article:nth-child(3) .pain-number {
  color: rgba(255, 255, 255, 0.6);
}

.pain-grid h3 {
  margin: 54px 0 15px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 24px;
  line-height: 1.35;
}

.pain-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.pain-grid article:nth-child(3) p {
  color: rgba(255, 255, 255, 0.72);
}

.pain-grid a {
  display: flex;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  font-weight: 800;
}

.pain-grid article:nth-child(3) a {
  border-color: rgba(255, 255, 255, 0.24);
}

.belief {
  padding: 104px 32px;
  background: var(--ink);
  color: var(--cream);
  text-align: center;
}

.belief-label {
  width: fit-content;
  margin: 0 auto 38px;
  padding: 7px 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.belief blockquote {
  margin: 0;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(38px, 5.2vw, 72px);
  font-weight: 900;
  letter-spacing: -0.055em;
  line-height: 1.34;
}

.belief blockquote span {
  color: var(--orange);
}

.belief > p {
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.projects {
  display: flex;
  flex-direction: column;
}

.projects .project-heading {
  order: 1;
}

.projects .project-grid {
  order: 2;
}

.projects .xiaodi-story {
  order: 3;
}

.projects .research-proof {
  order: 4;
}

.projects .platform-proof {
  order: 5;
}

.project-card {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  min-height: 325px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 254, 249, 0.66);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 22px 55px rgba(26, 26, 26, 0.12);
}

.project-wide {
  grid-column: 1 / -1;
  grid-template-columns: 1.4fr 0.6fr;
}

.project-image {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  background: var(--sand);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.025);
}

.open-mark {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--cream);
  font-weight: 900;
  box-shadow: 0 7px 24px rgba(26, 26, 26, 0.12);
}

.project-copy {
  align-self: end;
  padding: 30px;
}

.project-copy > span {
  color: var(--orange);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.project-copy h3 {
  margin: 11px 0 13px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 27px;
  line-height: 1.3;
}

.project-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.xiaodi-story {
  display: grid;
  grid-template-columns: 0.76fr 1.24fr;
  gap: 52px;
  align-items: center;
  margin-top: 82px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 254, 249, 0.68);
}

.xiaodi-copy {
  padding: 12px 0 12px 16px;
}

.xiaodi-copy > span {
  color: var(--orange);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.xiaodi-copy h3 {
  margin: 10px 0 20px;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(30px, 3.2vw, 44px);
  line-height: 1.28;
}

.xiaodi-copy > p {
  margin: 0 0 13px;
  color: var(--muted);
  font-size: 13px;
}

.xiaodi-conclusion {
  margin-top: 24px;
  padding: 18px 20px;
  border-left: 3px solid var(--orange);
  background: #efe9df;
}

.xiaodi-conclusion small {
  display: block;
  color: var(--orange);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.xiaodi-conclusion strong {
  display: block;
  margin-top: 5px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 17px;
  line-height: 1.55;
}

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

.xiaodi-gallery a {
  position: relative;
  min-height: 190px;
  overflow: hidden;
  border-radius: 14px;
  background: var(--sand);
}

.xiaodi-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.xiaodi-gallery a:hover img {
  transform: scale(1.035);
}

.xiaodi-gallery span {
  position: absolute;
  top: 10px;
  right: 10px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--cream);
  font-size: 11px;
  font-weight: 900;
  box-shadow: 0 6px 18px rgba(26, 26, 26, 0.12);
}

.platform-proof {
  margin-top: 86px;
  padding-top: 58px;
  border-top: 1px solid var(--line);
}

.platform-heading {
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  gap: 70px;
  align-items: end;
  margin-bottom: 30px;
}

.platform-heading span,
.research-copy > span {
  color: var(--orange);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.platform-heading h3,
.research-copy h3 {
  margin: 8px 0 0;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(29px, 3vw, 42px);
  line-height: 1.38;
}

.platform-heading > p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.platform-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 254, 249, 0.66);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 45px rgba(26, 26, 26, 0.1);
}

.platform-image {
  position: relative;
  width: 100%;
  aspect-ratio: 1.7 / 1;
  overflow: hidden;
  background: #ded9d0;
}

.platform-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.platform-image > span {
  position: absolute;
  top: 13px;
  right: 13px;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--cream);
  font-weight: 900;
  box-shadow: 0 7px 20px rgba(26, 26, 26, 0.13);
}

.platform-card > div:last-child {
  padding: 18px 20px 20px;
}

.platform-card strong {
  font-family: "Songti SC", "STSong", serif;
  font-size: 23px;
}

.platform-card p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.result-heading {
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  gap: 70px;
  align-items: end;
  margin: 74px 0 28px;
  padding-top: 50px;
  border-top: 1px solid var(--line);
}

.result-heading span {
  color: var(--orange);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.result-heading h3 {
  margin: 8px 0 0;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(29px, 3vw, 42px);
  line-height: 1.3;
}

.result-heading > p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.result-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 254, 249, 0.72);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.result-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 45px rgba(26, 26, 26, 0.1);
}

.result-image {
  position: relative;
  height: 320px;
  overflow: hidden;
  background: #eeeae3;
}

.result-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.result-card .result-image img {
  object-fit: contain;
}

.result-image > span {
  position: absolute;
  right: 13px;
  bottom: 13px;
  padding: 7px 11px;
  border-radius: 999px;
  background: var(--cream);
  font-size: 9px;
  font-weight: 900;
  box-shadow: 0 7px 20px rgba(26, 26, 26, 0.13);
}

.result-copy {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  padding: 28px;
}

.result-copy > p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 11px;
}

.result-copy > strong {
  display: block;
  color: var(--orange);
  font-family: Georgia, serif;
  font-size: clamp(54px, 5.4vw, 78px);
  font-weight: 400;
  line-height: 1;
}

.result-copy > strong small {
  color: var(--ink);
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 15px;
  font-weight: 800;
}

.result-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.result-stats span,
.result-note {
  width: fit-content;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 700;
}

.result-note {
  display: block;
  margin-top: auto;
}

.content-conclusion {
  margin-top: 18px;
  padding: 24px 30px;
  border-radius: 18px;
  background: var(--ink);
  color: var(--cream);
}

.content-conclusion span {
  display: block;
  color: var(--orange);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.content-conclusion strong {
  display: block;
  max-width: 980px;
  margin-top: 6px;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(18px, 2vw, 25px);
  line-height: 1.55;
}

.research-proof {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 56px;
  align-items: center;
  margin-top: 82px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--ink);
  color: var(--cream);
}

.research-image {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  border-radius: 14px;
  background: white;
}

.research-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.research-image span {
  position: absolute;
  right: 14px;
  bottom: 14px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--cream);
  color: var(--ink);
  font-size: 10px;
  font-weight: 800;
}

.research-copy {
  padding-right: 22px;
}

.research-copy > p {
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
}

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.research-tags span {
  padding: 7px 11px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 9px;
  font-weight: 700;
}

.method {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 90px;
  padding: 120px max(32px, calc((100vw - var(--max)) / 2));
  background: var(--ink);
  color: var(--cream);
}

.method-intro h2 {
  margin: 0;
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(58px, 6vw, 88px);
  font-weight: 900;
  letter-spacing: -0.07em;
  line-height: 1.05;
}

.method-intro h2 span {
  color: var(--orange);
}

.method-intro > p:not(.section-no) {
  max-width: 520px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.52);
  font-size: 14px;
}

.button.orange {
  margin-top: 30px;
  background: var(--orange);
  color: white;
}

.method-steps {
  align-self: center;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.method-steps article {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 10px;
  padding: 29px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.method-steps article > span {
  color: var(--orange);
  font-family: Georgia, serif;
  font-size: 13px;
}

.method-steps p {
  margin: 0 0 4px;
  color: rgba(255, 255, 255, 0.4);
  font-size: 11px;
}

.method-steps h3 {
  margin: 0;
  font-family: "Songti SC", "STSong", serif;
  font-size: 27px;
}

.method-steps small {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 12px;
}

.about {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 86px;
  align-items: center;
}

.about-photo {
  position: relative;
  min-height: 590px;
  overflow: hidden;
  border-radius: 42px 42px 8px 42px;
  background: var(--sand);
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 52% center;
}

.about-photo span {
  position: absolute;
  right: 18px;
  bottom: 18px;
  padding: 9px 13px;
  border-radius: 999px;
  background: var(--cream);
  font-size: 10px;
  font-weight: 800;
}

.about-copy h2 {
  max-width: 650px;
}

.about-lead {
  margin: 26px 0 18px;
  color: var(--orange) !important;
  font-family: "Songti SC", "STSong", serif;
  font-size: 22px !important;
  font-weight: 800;
}

.about-copy > p:not(.section-no):not(.about-lead) {
  color: var(--muted);
  font-size: 14px;
}

.about-quote {
  position: relative;
  margin-top: 30px;
  padding: 22px 24px 22px 55px;
  border-left: 3px solid var(--orange);
  background: rgba(255, 254, 249, 0.62);
  font-family: "Songti SC", "STSong", serif;
  font-size: 17px;
  font-weight: 700;
}

.about-quote i {
  position: absolute;
  top: 6px;
  left: 17px;
  color: var(--orange);
  font-family: Georgia, serif;
  font-size: 44px;
}

.system-section {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 90px;
  padding: 120px max(32px, calc((100vw - var(--max)) / 2));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 84% 18%, rgba(224, 93, 62, 0.12), transparent 26%),
    #eee7dc;
  color: var(--ink);
}

.system-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 35px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 18px;
  font-weight: 900;
}

.system-brand span {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(26, 26, 26, 0.12);
  border-radius: 50%;
  background: var(--orange);
  color: white;
}

.system-copy > p:not(.section-no) {
  max-width: 680px;
  color: var(--muted);
  font-size: 14px;
}

.light-button {
  background: var(--orange);
  color: white;
}

.text-button {
  padding: 12px;
  font-size: 12px;
  font-weight: 800;
}

.system-model {
  align-self: center;
  padding: 10px 34px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 254, 249, 0.68);
  box-shadow: 0 24px 60px rgba(26, 26, 26, 0.08);
}

.system-model > div {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.system-model > div:last-child {
  border-bottom: none;
}

.system-model span {
  color: var(--orange);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.system-model strong {
  display: block;
  margin-top: 4px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 28px;
}

.system-model p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.next {
  text-align: center;
}

.next-label {
  width: fit-content;
  margin: 0 auto 28px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.18em;
}

.next h2 {
  max-width: 1000px;
  margin: 0 auto;
}

.next > p {
  max-width: 720px;
  margin: 28px auto 0;
  color: var(--muted);
  font-size: 14px;
}

.next-actions {
  justify-content: center;
}

.footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 120px;
  padding: 25px max(32px, calc((100vw - var(--max)) / 2));
  border-top: 1px solid var(--line);
}

.footer p {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
}

.footer p:last-child {
  justify-self: end;
}

@media (max-width: 1020px) {
  .hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
    gap: 30px;
    padding-right: 28px;
    padding-left: 28px;
  }

  .hero-copy {
    padding-top: 0;
  }

  .hero h1 {
    font-size: clamp(78px, 11vw, 112px);
  }

  .hero-kicker {
    font-size: clamp(30px, 4vw, 44px);
  }

  .hero-portrait {
    min-height: 570px;
  }

  .portrait-card {
    inset: 26px 0 34px 22px;
  }

  .tag-one {
    left: 0;
  }

  .tag-two {
    right: -12px;
  }

  .tag-three {
    right: 10px;
  }

  .section-heading.split,
  .project-heading,
  .method,
  .about,
  .system-section,
  .xiaodi-story {
    grid-template-columns: 1fr;
  }

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

  .project-card,
  .project-wide {
    grid-template-columns: 1fr;
  }

  .project-image {
    min-height: 340px;
  }

  .platform-heading,
  .result-heading,
  .research-proof {
    grid-template-columns: 1fr;
  }

  .platform-grid,
  .result-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .research-copy {
    padding: 0 10px 10px;
  }

  .xiaodi-copy {
    padding: 10px;
  }

  .method,
  .system-section {
    gap: 60px;
  }

  .about-photo {
    min-height: 700px;
  }
}

@media (max-width: 720px) {
  .topbar {
    height: 68px;
    grid-template-columns: 1fr auto;
    padding: 0 20px;
  }

  .topbar nav {
    display: none;
  }

  .nav-cta {
    grid-column: 2;
  }

  .hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(145px, 0.88fr);
    gap: 10px;
    padding: 38px 12px 36px;
  }

  .hero h1 {
    font-size: clamp(54px, 16vw, 72px);
    margin-top: 16px;
  }

  .hero-kicker {
    font-size: clamp(21px, 6vw, 29px);
  }

  .pill {
    margin-bottom: 18px;
    padding: 5px 8px;
    font-size: 7px;
  }

  .hero h2 {
    margin-top: 13px;
    font-size: clamp(14px, 4vw, 18px);
  }

  .hero-description {
    margin-top: 14px;
    font-size: 9px;
    line-height: 1.65;
  }

  .hero-portrait {
    min-height: 430px;
  }

  .portrait-card {
    inset: 18px 0 22px;
    border-radius: 24px 24px 6px 24px;
  }

  .tag-one {
    top: 48px;
    left: -10px;
    padding: 6px 8px;
    font-size: 7px;
  }

  .tag-two {
    display: none;
  }

  .tag-three {
    display: none;
  }

  .portrait-caption {
    right: 10px;
    bottom: 34px;
    left: 10px;
  }

  .portrait-caption span {
    font-size: 6px;
  }

  .portrait-caption strong {
    font-size: 10px;
  }

  .hero-actions,
  .system-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .button,
  .system-actions .button {
    width: 100%;
  }

  .hero-actions {
    gap: 6px;
    margin-top: 17px;
  }

  .hero-actions .button {
    min-height: 34px;
    padding: 0 7px;
    border-radius: 8px;
    font-size: 8px;
  }

  .hero-proof {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
    margin-top: 18px;
    font-size: 7px;
  }

  .metric-strip {
    grid-template-columns: repeat(2, 1fr);
    padding: 0 20px;
  }

  .metric-strip > div {
    padding: 27px 16px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .metric-strip strong {
    font-size: 35px;
  }

  .section {
    width: calc(100% - 40px);
    padding: 86px 0;
  }

  .section-heading {
    margin-bottom: 42px;
  }

  .section-heading.split,
  .project-heading {
    gap: 26px;
  }

  .pain-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .pain-grid article {
    min-height: 280px;
  }

  .belief {
    padding: 78px 20px;
  }

  .belief blockquote br {
    display: none;
  }

  .project-wide {
    grid-column: auto;
  }

  .xiaodi-story {
    gap: 30px;
    padding: 18px;
  }

  .xiaodi-gallery {
    gap: 8px;
  }

  .xiaodi-gallery a {
    min-height: 125px;
  }

  .platform-heading {
    gap: 20px;
  }

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

  .platform-image {
    min-height: 0;
  }

  .platform-card > div:last-child {
    padding: 11px 12px 13px;
  }

  .platform-card strong {
    font-size: 17px;
  }

  .platform-card p {
    font-size: 8px;
    line-height: 1.5;
  }

  .result-heading {
    gap: 20px;
    margin-top: 58px;
  }

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

  .result-image {
    height: 250px;
  }

  .result-copy {
    padding: 14px 12px;
  }

  .result-copy > p {
    min-height: 34px;
    font-size: 8px;
    line-height: 1.5;
  }

  .result-copy > strong {
    font-size: clamp(29px, 8vw, 43px);
  }

  .result-copy > strong small {
    font-size: 9px;
  }

  .result-stats {
    gap: 5px;
    margin-top: 14px;
  }

  .result-stats span,
  .result-note {
    padding: 5px 7px;
    font-size: 7px;
  }

  .research-proof {
    gap: 30px;
    padding: 18px;
  }

  .research-image {
    min-height: 250px;
  }

  .project-image {
    min-height: 250px;
  }

  .method,
  .system-section {
    padding: 86px 20px;
  }

  .method-steps article {
    grid-template-columns: 42px 1fr;
  }

  .about {
    gap: 55px;
  }

  .about-photo {
    min-height: 500px;
  }

  .next-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .footer {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 35px 20px;
  }

  .footer p:last-child {
    justify-self: start;
  }
}

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

  * {
    transition: none !important;
  }
}