:root {
  --ink: #17213a;
  --ink-soft: #31415f;
  --muted: #66738b;
  --line: #e1e7ef;
  --panel: #f7f9fc;
  --paper: #ffffff;
  --blue: #0a66d8;
  --blue-deep: #073f8f;
  --red: #c9252d;
  --gold: #c88a18;
  --green: #268b5a;
  --shadow: 0 24px 70px rgba(18, 48, 92, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(10, 102, 216, 0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(10, 102, 216, 0.025) 1px, transparent 1px),
    linear-gradient(180deg, rgba(242, 247, 253, 0.92), rgba(255, 255, 255, 0) 620px),
    var(--paper);
  background-size: 48px 48px, 48px 48px, auto, auto;
  font-family: "Noto Serif SC", "Songti SC", "Source Han Serif SC", Georgia, serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(115deg, transparent 0 56%, rgba(10, 102, 216, 0.04) 56% 56.3%, transparent 56.3%),
    linear-gradient(115deg, transparent 0 72%, rgba(201, 37, 45, 0.035) 72% 72.2%, transparent 72.2%);
}

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

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

button,
input,
select {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 76px;
  padding: 14px clamp(18px, 4.8vw, 68px);
  border-bottom: 1px solid rgba(225, 231, 239, 0.88);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
}

.brand img {
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(12px, 2vw, 26px);
  flex: 1;
  color: var(--muted);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-dropdown:hover .dropdown-trigger {
  color: var(--blue);
}

.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 48px;
}

.dropdown-trigger::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-3px) rotate(45deg);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% - 2px);
  left: 50%;
  display: grid;
  min-width: 176px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.dropdown-menu a {
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--ink-soft);
}

.dropdown-menu a:hover {
  color: var(--blue);
  background: var(--panel);
}

.nav-cta,
.primary-btn,
.secondary-btn,
.phone-link,
.header-phone,
.service-grid a,
.whitepaper a,
.diagnosis-card button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: var(--radius);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.nav-cta,
.primary-btn,
.diagnosis-card button {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 14px 32px rgba(10, 102, 216, 0.22);
}

.nav-cta {
  padding: 0 18px;
  font-size: 14px;
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.header-phone {
  min-height: 40px;
  padding: 0 14px;
  color: var(--blue-deep);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.76);
  font-size: 14px;
}

.primary-btn,
.secondary-btn {
  padding: 0 24px;
}

.secondary-btn {
  color: var(--blue-deep);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
}

.nav-cta:hover,
.primary-btn:hover,
.secondary-btn:hover,
.phone-link:hover,
.header-phone:hover,
.service-grid a:hover,
.whitepaper a:hover,
.diagnosis-card button:hover {
  transform: translateY(-2px);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(330px, 0.52fr);
  gap: clamp(30px, 5vw, 78px);
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: clamp(58px, 7.5vw, 108px) clamp(18px, 4.8vw, 68px) 76px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 110px 5vw auto auto;
  width: min(42vw, 560px);
  height: min(42vw, 560px);
  border: 1px solid rgba(10, 102, 216, 0.12);
  background:
    linear-gradient(90deg, rgba(10, 102, 216, 0.07) 1px, transparent 1px),
    linear-gradient(0deg, rgba(10, 102, 216, 0.07) 1px, transparent 1px);
  background-size: 32px 32px;
  clip-path: polygon(11% 0, 100% 0, 89% 100%, 0 100%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  left: clamp(18px, 4.8vw, 68px);
  right: clamp(18px, 4.8vw, 68px);
  bottom: 36px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(10, 102, 216, 0.32), rgba(201, 37, 45, 0.18), transparent);
  pointer-events: none;
}

.hero-copy,
.hero-panel,
.hero-blueprint {
  position: relative;
}

.hero-blueprint {
  position: absolute;
  inset: 8% 3% auto auto;
  width: min(48vw, 660px);
  height: 72%;
  pointer-events: none;
  opacity: 0.9;
}

.hero-blueprint::before,
.hero-blueprint::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(10, 102, 216, 0.12);
  transform: skewX(-10deg);
}

.hero-blueprint::before {
  inset: 8% 8% 20% 18%;
  background:
    linear-gradient(90deg, rgba(10, 102, 216, 0.1) 1px, transparent 1px),
    linear-gradient(0deg, rgba(10, 102, 216, 0.08) 1px, transparent 1px);
  background-size: 38px 38px;
}

.hero-blueprint::after {
  inset: 19% 0 7% 35%;
  border-color: rgba(201, 37, 45, 0.1);
}

.hero-blueprint span {
  position: absolute;
  padding: 6px 10px;
  border: 1px solid rgba(10, 102, 216, 0.16);
  border-radius: 999px;
  color: rgba(49, 65, 95, 0.56);
  background: rgba(255, 255, 255, 0.72);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 11px;
  font-weight: 900;
}

.hero-blueprint span:nth-child(1) {
  top: 14%;
  right: 46%;
}

.hero-blueprint span:nth-child(2) {
  top: 31%;
  right: 7%;
}

.hero-blueprint span:nth-child(3) {
  right: 31%;
  bottom: 25%;
}

.hero-blueprint span:nth-child(4) {
  left: 17%;
  bottom: 12%;
}

.eyebrow,
.panel-topbar,
.case-meta {
  margin: 0 0 14px;
  color: var(--blue);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(42px, 6.2vw, 82px);
  line-height: 1.06;
  letter-spacing: 0;
}

.hero-intro {
  max-width: 800px;
  margin: 26px 0 0;
  color: var(--ink-soft);
  font-size: clamp(17px, 1.9vw, 21px);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.proof-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 760px;
  margin-top: 48px;
}

.proof-row div {
  min-height: 112px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
}

.proof-row strong {
  display: block;
  font-size: 30px;
}

.proof-row span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.55;
}

.hero-panel {
  padding: 0;
  border: 1px solid rgba(225, 231, 239, 0.95);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-topbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  padding: 16px 18px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  background: rgba(247, 249, 252, 0.96);
  font-size: 12px;
  text-transform: none;
}

.panel-topbar strong {
  color: var(--blue);
}

.ai-console {
  margin: 22px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(10, 102, 216, 0.06), rgba(255, 255, 255, 0)),
    #fff;
}

.ai-console .query {
  margin: 0 0 18px;
  color: var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  font-weight: 900;
  line-height: 1.55;
}

.answer-lines {
  display: grid;
  gap: 9px;
}

.answer-lines span {
  display: block;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(10, 102, 216, 0.38), rgba(10, 102, 216, 0.08));
}

.answer-lines span:nth-child(2) {
  width: 86%;
  background: linear-gradient(90deg, rgba(38, 139, 90, 0.36), rgba(38, 139, 90, 0.08));
}

.answer-lines span:nth-child(3) {
  width: 68%;
  background: linear-gradient(90deg, rgba(201, 37, 45, 0.28), rgba(201, 37, 45, 0.06));
}

.source-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.source-list span {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  background: var(--panel);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.asset-meter {
  display: grid;
  gap: 14px;
  margin: 0 22px 22px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.asset-meter div {
  display: grid;
  gap: 8px;
}

.asset-meter span {
  color: var(--muted);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 800;
}

.asset-meter strong {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: #edf2f7;
  overflow: hidden;
}

.asset-meter strong::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--score);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--green));
}

.trust-chain {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0 22px 22px;
}

.trust-chain span {
  padding: 14px 12px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  color: var(--ink-soft);
  background: var(--panel);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
}

.trust-chain span:nth-child(2) {
  border-left-color: var(--gold);
}

.trust-chain span:nth-child(3) {
  border-left-color: var(--green);
}

.trust-chain span:nth-child(4) {
  border-left-color: var(--red);
}

.phone-link {
  width: calc(100% - 44px);
  margin: 0 22px 22px;
  color: var(--blue-deep);
  border: 1px solid var(--line);
  background: #fff;
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  padding: 0 clamp(18px, 4.8vw, 68px) clamp(60px, 7vw, 86px);
  background: transparent;
}

.signal-strip div {
  min-height: 118px;
  padding: 24px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
}

.signal-strip span {
  display: block;
  color: var(--blue);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 900;
}

.signal-strip strong {
  display: block;
  margin-top: 12px;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.35;
}

section {
  position: relative;
  padding: clamp(68px, 8.5vw, 116px) clamp(18px, 4.8vw, 68px);
  overflow: hidden;
}

.section-heading {
  max-width: 900px;
  margin-bottom: 38px;
}

.section-heading.centered {
  margin-inline: auto;
  text-align: center;
}

.section-heading h2,
.upgrade-copy h2,
.founder-card h2,
.diagnosis-copy h2 {
  margin: 0;
  font-size: clamp(32px, 4.2vw, 56px);
  line-height: 1.15;
}

.section-heading p,
.upgrade-copy p,
.founder-card p,
.diagnosis-copy p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.change-section,
.services-section,
.process-section,
.insights-section {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.68), rgba(247, 249, 252, 0.94)),
    var(--panel);
}

.change-section::before,
.services-section::before,
.process-section::before,
.insights-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 0 calc(100% - 1px), rgba(10, 102, 216, 0.045) calc(100% - 1px) 100%),
    linear-gradient(0deg, transparent 0 calc(100% - 1px), rgba(10, 102, 216, 0.035) calc(100% - 1px) 100%);
  background-size: 86px 86px;
  mask-image: linear-gradient(90deg, transparent, #000 16%, #000 84%, transparent);
}

.section-watermark {
  position: absolute;
  top: 24px;
  left: clamp(18px, 4.8vw, 68px);
  color: rgba(10, 102, 216, 0.055);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(58px, 10vw, 150px);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
  pointer-events: none;
  white-space: nowrap;
}

.section-watermark.right {
  right: clamp(18px, 4.8vw, 68px);
  left: auto;
  color: rgba(201, 37, 45, 0.045);
}

.pain-grid,
.service-grid,
.case-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.pain-grid article,
.service-grid article,
.case-grid article {
  min-height: 260px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 12px 34px rgba(18, 48, 92, 0.06);
}

.pain-grid span,
.service-grid span,
.process-list span {
  color: var(--blue);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
}

.pain-grid h3,
.service-grid h3,
.case-grid h3,
.process-list h3 {
  margin: 20px 0 12px;
  font-size: 23px;
  line-height: 1.25;
}

.pain-grid p,
.service-grid p,
.case-grid p,
.process-list p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.82;
}

.decision-path {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}

.decision-path span {
  position: relative;
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  color: var(--ink-soft);
  border-right: 1px solid var(--line);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
}

.decision-path span:last-child {
  border-right: 0;
  color: #fff;
  background: var(--blue-deep);
}

.upgrade-section {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(360px, 0.58fr);
  gap: clamp(28px, 6vw, 86px);
  align-items: center;
}

.upgrade-section::before {
  content: "";
  position: absolute;
  right: clamp(18px, 5vw, 86px);
  top: 56px;
  width: min(34vw, 420px);
  height: min(34vw, 420px);
  border: 1px solid rgba(10, 102, 216, 0.12);
  clip-path: polygon(20% 0, 100% 0, 80% 100%, 0 100%);
  background:
    repeating-linear-gradient(135deg, rgba(10, 102, 216, 0.055) 0 1px, transparent 1px 18px);
  pointer-events: none;
}

.upgrade-card {
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.upgrade-card h3 {
  margin: 0 0 22px;
  font-size: 30px;
}

.upgrade-card ul {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.upgrade-card li {
  display: grid;
  gap: 6px;
  padding: 18px;
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  background: var(--panel);
}

.upgrade-card li:nth-child(2) {
  border-left-color: var(--gold);
}

.upgrade-card li:nth-child(3) {
  border-left-color: var(--green);
}

.upgrade-card li:nth-child(4) {
  border-left-color: var(--red);
}

.upgrade-card span {
  color: var(--muted);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.55;
}

.method-section {
  background:
    linear-gradient(180deg, #fff, rgba(247, 249, 252, 0.58)),
    #fff;
}

.method-section::before {
  content: "";
  position: absolute;
  inset: 34px auto auto 50%;
  width: min(78vw, 980px);
  height: 300px;
  transform: translateX(-50%);
  border-top: 1px solid rgba(10, 102, 216, 0.12);
  border-bottom: 1px solid rgba(10, 102, 216, 0.08);
  background:
    linear-gradient(90deg, transparent 0 24%, rgba(10, 102, 216, 0.1) 24% 24.2%, transparent 24.2% 50%, rgba(38, 139, 90, 0.1) 50% 50.2%, transparent 50.2% 76%, rgba(201, 37, 45, 0.08) 76% 76.2%, transparent 76.2%);
  pointer-events: none;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 1160px;
  margin: 0 auto;
}

.method-grid article {
  min-height: 330px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(10, 102, 216, 0.06), transparent 48%),
    #fff;
  box-shadow: 0 16px 50px rgba(18, 48, 92, 0.08);
}

.method-index {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  color: #fff;
  background: var(--blue);
  font-size: 28px;
  font-weight: 900;
}

.method-grid article:nth-child(2) .method-index {
  background: var(--gold);
}

.method-grid article:nth-child(3) .method-index {
  background: var(--red);
}

.method-grid h3 {
  margin: 24px 0 12px;
  font-size: 28px;
}

.method-grid p {
  color: var(--muted);
  line-height: 1.9;
}

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

.service-grid article {
  min-height: 300px;
}

.service-grid ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 4px;
  padding: 0;
  list-style: none;
}

.service-grid li {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  background: var(--panel);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.service-grid a {
  margin-top: 16px;
  padding: 0 18px;
  color: var(--blue);
  border: 1px solid var(--line);
  background: #fff;
}

.deliverables-section {
  background:
    linear-gradient(90deg, rgba(10, 102, 216, 0.035), transparent 32%, transparent 68%, rgba(201, 37, 45, 0.028)),
    #fff;
}

.deliverable-board {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  max-width: 1180px;
  margin: 0 auto;
}

.deliverable-board span {
  min-height: 72px;
  display: flex;
  align-items: center;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--ink-soft);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
  line-height: 1.45;
}

.seo-tags-section {
  background:
    linear-gradient(135deg, rgba(247, 249, 252, 0.96), rgba(255, 255, 255, 0.72)),
    var(--panel);
}

.seo-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.seo-tags span {
  padding: 9px 13px;
  border: 1px solid rgba(10, 102, 216, 0.14);
  border-radius: 999px;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 8px 22px rgba(18, 48, 92, 0.04);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 800;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  min-height: 238px;
  padding: 26px;
  border-top: 3px solid var(--blue);
  border-radius: var(--radius);
  background: #fff;
}

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

.case-meta {
  color: var(--gold);
}

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

.case-foot span {
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--blue-deep);
  background: rgba(10, 102, 216, 0.08);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 12px;
  font-weight: 900;
}

.founder-section {
  background:
    linear-gradient(135deg, #fff 0 58%, rgba(247, 249, 252, 0.92) 58%),
    #fff;
}

.founder-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: clamp(28px, 6vw, 80px);
  align-items: center;
  padding: clamp(30px, 5vw, 58px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(247, 249, 252, 0.88), rgba(255, 255, 255, 0.96)),
    #fff;
  box-shadow: var(--shadow);
}

.founder-tags {
  display: grid;
  gap: 12px;
}

.founder-tags span {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink-soft);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
}

.founder-tags span:nth-child(2) {
  border-left-color: var(--gold);
}

.founder-tags span:nth-child(3) {
  border-left-color: var(--green);
}

.founder-tags span:nth-child(4) {
  border-left-color: var(--red);
}

.insight-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.48fr) minmax(0, 1fr);
  gap: 18px;
}

.whitepaper,
.insight-list article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 12px 34px rgba(18, 48, 92, 0.06);
}

.whitepaper {
  min-height: 330px;
  padding: 30px;
}

.whitepaper h3 {
  margin: 0 0 14px;
  font-size: 30px;
}

.whitepaper p {
  color: var(--muted);
  line-height: 1.8;
}

.whitepaper a {
  margin-top: 16px;
  padding: 0 18px;
  color: #fff;
  background: var(--blue-deep);
}

.insight-list {
  display: grid;
  gap: 14px;
}

.insight-list article {
  min-height: 98px;
  padding: 22px 26px;
}

.insight-list span {
  color: var(--blue);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 900;
}

.insight-list h3 {
  margin: 8px 0 0;
  font-size: 23px;
}

.diagnosis-section {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(360px, 0.62fr);
  gap: clamp(28px, 6vw, 78px);
  align-items: center;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(7, 63, 143, 0.97), rgba(23, 33, 58, 0.96)),
    var(--blue-deep);
}

.diagnosis-copy p,
.diagnosis-copy .eyebrow {
  color: rgba(255, 255, 255, 0.78);
}

.qr-block {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  max-width: 520px;
  margin-top: 30px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
}

.qr-block img {
  border-radius: var(--radius);
  background: #fff;
}

.qr-block span {
  color: rgba(255, 255, 255, 0.86);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
  line-height: 1.65;
}

.qr-block a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.diagnosis-card {
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.2);
}

.diagnosis-card h3 {
  margin: 0 0 22px;
  font-size: 30px;
}

.diagnosis-card form {
  display: grid;
  gap: 16px;
}

.diagnosis-card label {
  display: grid;
  gap: 8px;
  color: var(--ink-soft);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  font-weight: 800;
}

.diagnosis-card select,
.diagnosis-card input {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  outline: none;
}

.diagnosis-card select:focus,
.diagnosis-card input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(10, 102, 216, 0.1);
}

.diagnosis-card select[data-level="high"] {
  border-color: rgba(38, 139, 90, 0.42);
  background: linear-gradient(90deg, rgba(38, 139, 90, 0.08), #fff 36%);
}

.diagnosis-card select[data-level="medium"] {
  border-color: rgba(200, 138, 24, 0.42);
  background: linear-gradient(90deg, rgba(200, 138, 24, 0.08), #fff 36%);
}

.diagnosis-card select[data-level="low"] {
  border-color: rgba(201, 37, 45, 0.32);
  background: linear-gradient(90deg, rgba(201, 37, 45, 0.07), #fff 36%);
}

.lead-fields {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.diagnosis-card button {
  width: 100%;
  border: 0;
  cursor: pointer;
}

.diagnosis-result {
  display: none;
  margin-top: 18px;
  padding: 18px;
  border: 1px solid rgba(38, 139, 90, 0.25);
  border-radius: var(--radius);
  background: rgba(38, 139, 90, 0.08);
  color: var(--ink-soft);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

.diagnosis-result p {
  margin: 8px 0 0;
}

.diagnosis-result small {
  display: block;
  margin-top: 10px;
  color: var(--muted);
}

.diagnosis-result.is-visible {
  display: block;
}

.float-wechat {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 28;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  color: #fff;
  background: var(--green);
  box-shadow: 0 16px 34px rgba(38, 139, 90, 0.26);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(18px, 4.8vw, 68px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

@media (max-width: 1080px) {
  .site-header {
    align-items: stretch;
    flex-wrap: wrap;
    padding-bottom: 10px;
  }

  .nav-links {
    order: 3;
    justify-content: flex-start;
    width: 100%;
    flex-basis: 100%;
    gap: 18px;
    min-height: 42px;
    overflow-x: auto;
    padding: 4px 2px 0;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-dropdown {
    min-height: 40px;
    position: static;
  }

  .dropdown-menu {
    left: 18px;
    top: 100%;
    transform: translateY(8px);
  }

  .nav-dropdown:hover .dropdown-menu,
  .nav-dropdown:focus-within .dropdown-menu {
    transform: translateY(0);
  }

  .hero,
  .upgrade-section,
  .founder-card,
  .diagnosis-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .pain-grid,
  .process-list,
  .deliverable-board,
  .signal-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .decision-path span:nth-child(3) {
    border-right: 0;
  }
}

.checker-page {
  background:
    linear-gradient(90deg, rgba(10, 102, 216, 0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(10, 102, 216, 0.025) 1px, transparent 1px),
    #f7f9fc;
  background-size: 48px 48px;
}

.checker-hero {
  padding-bottom: 40px;
}

.checker-hero h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(54px, 8vw, 116px);
  line-height: 0.98;
}

.checker-hero h1::first-line {
  color: var(--blue);
}

.checker-hero p {
  max-width: 920px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.8;
}

.checker-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin-top: 34px;
  color: var(--muted);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
}

.checker-metrics span {
  position: relative;
  padding-left: 20px;
}

.checker-metrics span::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 8px;
  height: 8px;
  border: 2px solid var(--blue);
  border-radius: 50%;
  transform: translateY(-50%);
}

.checker-tool {
  padding-top: 30px;
}

.checker-tabs {
  display: flex;
  width: max-content;
  margin: 0 auto 42px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f1f4f8;
}

.checker-tabs button {
  min-width: 138px;
  min-height: 48px;
  border: 0;
  border-radius: 8px;
  color: var(--muted);
  background: transparent;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
  cursor: pointer;
}

.checker-tabs button.is-active {
  color: var(--blue);
  background: #fff;
  box-shadow: 0 10px 26px rgba(18, 48, 92, 0.14);
}

.checker-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  max-width: 1220px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(18, 48, 92, 0.14);
  overflow: hidden;
}

.checker-editor {
  min-height: 560px;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
}

.checker-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.checker-toolbar strong {
  color: var(--ink-soft);
}

.toolbar-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

.toolbar-actions button,
.checker-bottom button {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink-soft);
  background: #fff;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
  cursor: pointer;
}

#contentInput {
  width: 100%;
  min-height: 410px;
  padding: 26px 30px;
  border: 0;
  color: var(--ink);
  background: #fff;
  font-size: 19px;
  line-height: 1.85;
  resize: vertical;
  outline: none;
}

.url-row {
  padding: 18px 24px;
  border-top: 1px solid var(--line);
  background: #fbfdff;
}

.url-row input {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.url-row p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.checker-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 24px;
  border-top: 1px solid var(--line);
}

.checker-bottom span {
  color: var(--gold);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
}

.checker-bottom button {
  min-width: 170px;
  color: #fff;
  border-color: var(--blue);
  background: var(--blue);
}

.checker-bottom button:disabled {
  color: #a4adba;
  border-color: #e2e7ee;
  background: #e9eef5;
  cursor: not-allowed;
}

.checker-results {
  display: grid;
  align-content: start;
  gap: 18px;
  padding: 26px;
  border-left: 1px solid var(--line);
  background: #fbfdff;
}

.result-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.result-kicker {
  margin: 0 0 12px;
  color: var(--muted);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
}

.result-card strong {
  display: block;
  color: var(--blue);
  font-size: 56px;
  line-height: 1;
}

.result-card span {
  display: block;
  margin-top: 10px;
  color: var(--ink-soft);
  font-weight: 800;
}

.score-list {
  display: grid;
  gap: 16px;
}

.score-list div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 12px;
  align-items: center;
}

.score-list span,
.source-estimate span {
  color: var(--ink-soft);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
}

.score-list strong,
.source-estimate strong {
  color: var(--blue);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
}

.score-list i {
  grid-column: 1 / -1;
  height: 9px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue) var(--score), #e3e8ef var(--score));
}

.source-estimate {
  display: grid;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.source-estimate h2 {
  margin: 0;
  font-size: 20px;
}

.source-estimate div {
  display: flex;
  justify-content: space-between;
}

.source-estimate p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.checker-report {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  max-width: 1220px;
  margin: 22px auto 0;
}

.checker-report > div {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.checker-report h2 {
  margin: 0 0 14px;
}

.checker-report li {
  margin: 10px 0;
  color: var(--muted);
  line-height: 1.75;
}

.checker-promo {
  background:
    linear-gradient(135deg, rgba(10, 102, 216, 0.07), rgba(255, 255, 255, 0.9)),
    #fff;
}

.checker-promo-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 52px rgba(18, 48, 92, 0.08);
}

.checker-promo h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
}

.checker-promo p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

@media (max-width: 980px) {
  .checker-shell,
  .checker-report,
  .checker-promo-inner {
    grid-template-columns: 1fr;
  }

  .checker-results {
    border-top: 1px solid var(--line);
    border-left: 0;
  }
}

@media (max-width: 640px) {
  .checker-hero h1 {
    font-size: 48px;
  }

  .checker-tabs {
    width: 100%;
  }

  .checker-tabs button {
    min-width: 0;
    flex: 1;
  }

  .checker-toolbar,
  .checker-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .toolbar-actions {
    margin-left: 0;
  }

  .checker-bottom button {
    width: 100%;
  }
}

@media (max-width: 820px) {
  .method-grid,
  .service-grid,
  .case-grid,
  .insight-layout {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .site-header {
    min-height: 98px;
    padding: 10px 14px;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .brand span {
    font-size: 18px;
  }

  .nav-cta {
    min-height: 40px;
    padding: 0 12px;
    font-size: 13px;
  }

  .header-actions {
    gap: 8px;
  }

  .header-phone {
    min-height: 40px;
    padding: 0 10px;
    font-size: 13px;
  }

  .nav-links {
    font-size: 14px;
    gap: 16px;
  }

  .dropdown-menu {
    min-width: 158px;
  }

  .hero {
    padding: 44px 16px 54px;
  }

  section {
    padding: 58px 16px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero-actions a,
  .phone-link {
    width: 100%;
  }

  .proof-row,
  .pain-grid,
  .deliverable-board,
  .process-list,
  .trust-chain,
  .signal-strip,
  .decision-path {
    grid-template-columns: 1fr;
  }

  .signal-strip {
    padding: 0 16px 46px;
  }

  .decision-path span {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .pain-grid article,
  .service-grid article,
  .case-grid article,
  .method-grid article,
  .process-list li {
    min-height: auto;
  }

  .qr-block {
    grid-template-columns: 92px minmax(0, 1fr);
  }

  .float-wechat {
    right: 14px;
    bottom: 14px;
  }

  .site-footer {
    flex-direction: column;
  }
}