:root {
      color-scheme: light;
      --paper: #f4f1eb;
      --paper-2: #fbf9f4;
      --ink: #181512;
      --muted: #5f594f;
      --quiet: #8a8277;
      --line: #cbc3b7;
      --line-strong: #a99f92;
      --coral: #c9624d;
      --coral-soft: #fff2ec;
      --green: #276f5b;
      --green-soft: #edf7f2;
      --blue: #244d73;
      --blue-soft: #eef4fa;
      --shadow: 0 24px 60px rgba(24, 21, 18, .08);
      --mono: "IBM Plex Mono", "SFMono-Regular", "Menlo", "Consolas", monospace;
      --sans: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    }

    * { box-sizing: border-box; }
    html {
      background: var(--paper);
      scroll-behavior: smooth;
      scroll-snap-type: y proximity;
      scroll-padding-top: 68px;
    }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: var(--sans);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
      overscroll-behavior-y: contain;
    }

    /* Layout Components */
    .shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
    .section-shell { width: min(1000px, calc(100% - 40px)); margin: 0 auto; }

    /* Topbar */
    .topbar {
      position: sticky; top: 0; z-index: 100;
      backdrop-filter: blur(14px);
      background: rgba(244, 241, 235, .82);
      border-bottom: 1px solid rgba(24, 21, 18, .06);
    }
    .topbar-inner { display: flex; align-items: center; justify-content: space-between; min-height: 68px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
    .brand-mark {
      width: 22px; height: 22px; border: 1px solid var(--ink);
      background: linear-gradient(90deg, transparent 10px, var(--ink) 10px 11px, transparent 11px),
                  linear-gradient(0deg, transparent 10px, var(--ink) 10px 11px, transparent 11px),
                  var(--paper-2);
    }
    .brand-name { font-size: 14px; font-weight: 800; }
    /* .nav-link { padding: 0 12px; font-size: 12px; font-weight: 600; color: var(--muted); text-decoration: none; } */
    .nav-link { padding: 0 12px; font-size: 13px; font-weight: 600; color: var(--muted); text-decoration: none; transition: 0.2s; }
    .nav-link:hover { color: var(--coral); }
    .btn-outline { background: transparent; border: 1px solid var(--line-strong); color: var(--ink); }
    .nav-link-cta {
      padding: 8px 16px;
      border-radius: 4px;
    }

    /* Hero & Trust Bar */
    .hero {
      min-height: 80vh; display: flex; flex-direction: column; 
      justify-content: center; align-items: center; text-align: center;
      padding: 80px 20px;
      scroll-snap-align: start;
      scroll-snap-stop: always;
    }
    
    .hero-kicker {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 6px 14px; border: 1px solid var(--line-strong);
      font-family: var(--mono); font-size: 12px; margin-bottom: 32px;
      border-radius: 20px; background: #fff;
    }
    .hero-kicker::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--green); animation: pulse 2s infinite; }
    @keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(39,111,91,0.4); } 70% { box-shadow: 0 0 0 10px rgba(39,111,91,0); } 100% { box-shadow: 0 0 0 0 rgba(39,111,91,0); } }
    
    .hero h1 { font-size: clamp(40px, 8vw, 82px); letter-spacing: -3px; line-height: 1.04; margin: 0; }
    .hero p { max-width: 650px; font-size: 18px; color: var(--muted); margin: 24px 0 40px; }
    .hero-actions {
      display: flex;
      align-items: center;
      gap: 22px;
      flex-wrap: wrap;
      justify-content: center;
    }
    .ghost-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 62px;
      padding: 0 30px;
      border: 1px solid rgba(39, 111, 91, 0.22);
      border-radius: 10px;
      color: #fff;
      background: var(--green);
      text-decoration: none;
      font-size: 15px;
      font-weight: 700;
      transition: 0.24s;
    }
    .ghost-link:hover {
      border-color: rgba(39, 111, 91, 0.28);
      background: #215b4a;
      color: #fff;
      transform: translateY(-2px);
    }

    .trust-bar {
      padding: 40px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
      margin-bottom: 80px; text-align: center;
    }
    .logo-grid {
      display: flex; justify-content: center; gap: 40px; opacity: 0.5; filter: grayscale(1);
      flex-wrap: wrap; align-items: center;
    }
    .logo-item { font-family: var(--mono); font-weight: 700; letter-spacing: 2px; }

    /* Capability Portal */
    .portal-overlay {
      position: fixed;
      inset: 0;
      z-index: 200;
      display: none;
      background: rgba(244, 241, 235, 0.96);
      backdrop-filter: blur(12px);
      overflow-y: auto;
    }
    .portal-overlay.is-open { display: block; }
    .portal-shell {
      width: min(1180px, calc(100% - 40px));
      margin: 0 auto;
      padding: 28px 0 56px;
    }
    .portal-topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 8px 0 24px;
      position: sticky;
      top: 0;
      z-index: 4;
      background: linear-gradient(to bottom, rgba(244, 241, 235, 0.98), rgba(244, 241, 235, 0.92), rgba(244, 241, 235, 0));
    }
    .portal-close {
      width: 42px;
      height: 42px;
      border: 1px solid rgba(24, 21, 18, 0.12);
      background: rgba(255, 255, 255, 0.9);
      color: var(--ink);
      font-size: 18px;
      cursor: pointer;
    }
    .portal-intro {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 28px;
      align-items: start;
      margin-bottom: 28px;
    }
    .portal-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 12px;
      border: 1px solid rgba(24, 21, 18, 0.1);
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.8);
      font-family: var(--mono);
      font-size: 11px;
      color: var(--muted);
    }
    .portal-intro h2 {
      margin: 18px 0 14px;
      font-size: clamp(34px, 5vw, 64px);
      line-height: 1.02;
      letter-spacing: -2px;
    }
    .portal-intro p {
      max-width: 620px;
      margin: 0;
      color: var(--muted);
      font-size: 16px;
      line-height: 1.85;
    }
    .portal-quicklinks {
      display: grid;
      gap: 12px;
    }
    .quick-card {
      padding: 18px 18px 16px;
      background: rgba(255, 255, 255, 0.86);
      border: 1px solid rgba(24, 21, 18, 0.08);
      border-radius: 10px;
      text-decoration: none;
      color: var(--ink);
      box-shadow: 0 12px 24px rgba(24, 21, 18, 0.04);
    }
    .quick-card strong {
      display: block;
      margin-bottom: 6px;
      font-size: 16px;
    }
    .quick-card span {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.7;
    }
    .portal-toolbar {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 14px;
      align-items: center;
      margin: 8px 0 22px;
    }
    .portal-search {
      min-height: 52px;
      padding: 0 16px;
      border: 1px solid rgba(24, 21, 18, 0.12);
      background: rgba(255, 255, 255, 0.84);
      font-size: 15px;
      border-radius: 8px;
    }
    .filter-group {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .filter-chip {
      min-height: 36px;
      padding: 0 12px;
      border-radius: 999px;
      border: 1px solid rgba(24, 21, 18, 0.10);
      background: rgba(255, 255, 255, 0.8);
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
      cursor: pointer;
    }
    .filter-chip.is-active {
      background: var(--ink);
      color: #fff;
      border-color: var(--ink);
    }
    .portal-section {
      padding: 28px 0 22px;
      border-top: 1px solid rgba(24, 21, 18, 0.08);
    }
    .portal-section:first-of-type { border-top: none; }
    .portal-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 18px;
    }
    .portal-headline {
      display: flex;
      align-items: baseline;
      gap: 14px;
      flex-wrap: wrap;
    }
    .portal-index {
      font-family: var(--mono);
      font-size: 12px;
      color: var(--quiet);
      letter-spacing: .1em;
    }
    .portal-head h3 {
      margin: 0;
      font-size: 22px;
      letter-spacing: -.02em;
    }
    .portal-head p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.7;
    }
    .portal-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }
    .portal-card {
      display: flex;
      flex-direction: column;
      min-height: 220px;
      padding: 22px;
      border: 1px solid rgba(24, 21, 18, 0.10);
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.84);
      box-shadow: 0 12px 28px rgba(24, 21, 18, 0.03);
    }
    .portal-card.is-hidden { display: none; }
    .portal-card-top {
      display: flex;
      align-items: start;
      justify-content: space-between;
      gap: 10px;
      margin-bottom: 16px;
    }
    .portal-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 42px;
      height: 42px;
      padding: 0 10px;
      background: var(--paper-2);
      border: 1px solid rgba(24, 21, 18, 0.08);
      font-family: var(--mono);
      font-size: 12px;
      font-weight: 700;
    }
    .portal-card h4 {
      margin: 0 0 10px;
      font-size: 20px;
      letter-spacing: -.02em;
    }
    .portal-card p {
      margin: 0 0 16px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
    }
    .portal-tags {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-top: auto;
      margin-bottom: 18px;
    }
    .portal-tag {
      display: inline-flex;
      align-items: center;
      min-height: 24px;
      padding: 0 8px;
      border-radius: 999px;
      background: rgba(39, 111, 91, 0.08);
      color: var(--green);
      font-size: 11px;
      font-weight: 700;
    }
    .portal-card-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      color: var(--quiet);
      font-size: 12px;
      font-family: var(--mono);
    }
    .portal-card-foot a {
      color: var(--ink);
      text-decoration: none;
      font-weight: 700;
    }

    /* Diagnosis Section */
    #diagnosis-section {
      padding: 44px 0 100px;
      background: var(--paper-2);
      scroll-snap-align: start;
      scroll-snap-stop: always;
    }
    .diag-intro {
      color: var(--muted);
      font-size: 15px;
      line-height: 1.7;
      margin-bottom: 14px;
    }
    .diag-rule {
      height: 2px;
      background: rgba(24, 21, 18, 0.72);
      margin-bottom: 26px;
    }
    .diagnosis-grid { display: grid; grid-template-columns: minmax(0, 1fr) 332px; gap: 34px; align-items: start; }
    
    .form-card {
      background: rgba(255, 255, 255, 0.92);
      padding: 42px 40px 38px;
      border: none;
      border-radius: 10px;
      box-shadow: 0 18px 42px rgba(24, 21, 18, 0.06);
    }
    .field { margin-bottom: 26px; }
    .field label { display: block; margin-bottom: 12px; font-size: 16px; font-weight: 700; }
    .field select, .field input, .field textarea {
      width: 100%;
      padding: 15px 16px;
      min-height: 56px;
      border: 1px solid var(--line);
      background: #fcfbf8;
      font-size: 15px;
      border-radius: 6px;
      font-family: inherit;
    }
    .form-title { margin: 0 0 28px; font-size: 15px; color: var(--muted); font-weight: 500; }
    .submit-note { font-size: 11px; color: var(--quiet); margin-top: 15px; text-align: center; }
    .visually-hidden { display: none; }
    .diagnosis-side {
      padding-top: 18px;
    }
    .side-stack {
      position: sticky;
      top: 100px;
      display: grid;
      gap: 16px;
    }
    .side-card {
      background: transparent;
    }
    .side-panel {
      padding: 0;
    }
    .side-card.safety-panel .side-panel {
      padding: 4px 6px 0 2px;
    }
    .side-card.data-panel .side-panel {
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid var(--line);
      border-radius: 10px;
      padding: 22px 20px;
      box-shadow: 0 12px 24px rgba(24, 21, 18, 0.045);
    }
    .data-head {
      display: flex;
      align-items: start;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 14px;
    }
    .data-kicker {
      color: var(--quiet);
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: .08em;
      text-transform: uppercase;
      margin-bottom: 6px;
    }
    .data-badge {
      display: inline-flex;
      align-items: center;
      min-height: 26px;
      padding: 0 10px;
      border: 1px solid rgba(39, 111, 91, 0.18);
      border-radius: 999px;
      background: rgba(39, 111, 91, 0.08);
      color: var(--green);
      font-family: var(--mono);
      font-size: 10px;
      white-space: nowrap;
    }
    .side-card.data-panel h4 {
      margin: 0;
      font-size: 17px;
      letter-spacing: -.02em;
    }
    .data-updated {
      margin: 0 0 14px;
      color: var(--quiet);
      font-size: 12px;
    }
    .side-metrics {
      display: grid;
      gap: 8px;
    }
    .metric-row {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 14px;
      align-items: baseline;
      padding-bottom: 8px;
      border-bottom: 1px solid rgba(24, 21, 18, 0.08);
      font-size: 13px;
      color: var(--muted);
    }
    .metric-row:last-child {
      padding-bottom: 0;
      border-bottom: none;
    }
    .metric-row strong {
      color: var(--ink);
      font-weight: 700;
    }
    .metric-row .good {
      color: var(--green);
      font-weight: 700;
    }
    .side-divider {
      border: 0;
      border-top: 1px solid var(--paper);
      margin: 14px 0 12px;
    }
    .side-quote {
      margin: 0;
      font-size: 12px;
      color: var(--quiet);
      line-height: 1.65;
    }
    .quote-source {
      display: inline-block;
      margin-top: 6px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 600;
    }
    .data-source {
      margin-top: 12px;
      color: var(--quiet);
      font-size: 11px;
      line-height: 1.6;
    }
    .side-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 18px;
    }
    .side-head::before {
      content: "";
      width: 3px;
      height: 26px;
      background: var(--coral);
    }
    .side-head h4 {
      margin: 0;
      font-size: 17px;
      letter-spacing: -.02em;
    }
    .side-group { margin-bottom: 18px; }
    .side-group strong {
      display: block;
      margin-bottom: 4px;
      font-size: 14px;
    }
    .side-group p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.65;
    }

    /* Analyzing Animation */
    #analyzing { display: none; padding: 80px 20px; text-align: center; }
    .spinner { width: 48px; height: 48px; border: 2px solid var(--line); border-top-color: var(--coral); border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto 30px; }
    @keyframes spin { to { transform: rotate(360deg); } }
    .step-item { font-family: var(--mono); font-size: 13px; color: var(--quiet); margin: 10px 0; opacity: 0.3; transition: 0.3s; }
    .step-item.active { opacity: 1; color: var(--ink); }

    /* Report Paper */
    #reportArea { display: none; margin-top: 0px; }
    .report-paper {
      background: #fff;
      padding: 56px 52px 48px;
      border: 1px solid rgba(24, 21, 18, 0.12);
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }
    .report-watermark {
      position: absolute;
      top: 38px;
      right: 28px;
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: .16em;
      color: rgba(24, 21, 18, 0.12);
      border: 1px solid rgba(24, 21, 18, 0.08);
      padding: 6px 10px;
      transform: rotate(14deg);
      pointer-events: none;
    }
    .report-header {
      border-bottom: 2px solid var(--ink);
      padding-bottom: 18px;
      margin-bottom: 30px;
    }
    .report-ref {
      font-family: var(--mono);
      font-size: 11px;
      color: var(--quiet);
      letter-spacing: .08em;
    }
    .report-paper h3 {
      margin: 12px 0 14px;
      font-size: 30px;
      letter-spacing: -.03em;
      line-height: 1.15;
    }
    .report-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }
    .report-status {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 0 12px;
      border-radius: 999px;
      background: var(--coral-soft);
      color: var(--coral);
      font-size: 12px;
      font-weight: 700;
    }
    .report-date {
      font-size: 12px;
      color: var(--quiet);
    }
    .report-section-title {
      margin: 0 0 10px;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .02em;
    }
    .report-logic {
      margin: 0;
      line-height: 1.85;
      color: var(--muted);
      font-size: 14px;
    }
    .roi-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin: 28px 0 24px;
    }
    .roi-card {
      padding: 24px;
      background: var(--paper);
      border-radius: 6px;
      text-align: center;
    }
    .roi-val {
      display: block;
      font-size: 24px;
      font-weight: 800;
      color: var(--coral);
      margin-top: 8px;
      line-height: 1.25;
    }
    .roi-label {
      font-size: 11px;
      color: var(--quiet);
    }
    .roi-model {
      font-size: 16px;
    }
    .report-detail-grid {
      display: grid;
      grid-template-columns: 1.25fr 0.95fr;
      gap: 18px;
      margin-top: 8px;
    }
    .report-panel {
      min-height: 100%;
      padding: 22px 22px 20px;
      border-radius: 8px;
      background: rgba(251, 249, 244, 0.78);
      border: 1px solid rgba(24, 21, 18, 0.08);
    }
    .report-steps {
      margin: 0;
      padding-left: 18px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.9;
    }
    .report-steps li + li {
      margin-top: 4px;
    }
    .report-advice {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
    }
    .report-actions {
      margin-top: 28px;
      padding-top: 24px;
      border-top: 1px solid rgba(24, 21, 18, 0.10);
    }
    .report-actions p {
      margin: 0 0 16px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.75;
    }
    .report-action-row {
      display: flex;
      gap: 12px;
    }
    .report-action-row .cta-main {
      flex: 1;
      text-align: center;
    }
    .report-action-row .cta-outline {
      background: transparent;
      color: var(--ink);
      border: 1px solid rgba(24, 21, 18, 0.18);
    }
    .report-action-row .cta-outline:hover {
      background: #fff4ee;
      border-color: rgba(201, 98, 77, 0.28);
      color: var(--coral);
    }

    /* Third Screen */
    .ops-section {
      padding: 88px 0 82px;
      background: #fff;
      scroll-snap-align: start;
      scroll-snap-stop: always;
    }
    .ops-head {
      max-width: 760px;
      margin: 0 auto 38px;
      text-align: center;
    }
    .ops-head h2 {
      margin: 0;
      font-size: clamp(32px, 4vw, 50px);
      letter-spacing: -1.4px;
      line-height: 1.12;
    }
    .ops-head p {
      margin: 16px 0 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.7;
    }
    .ops-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 24px;
    }
    .ops-card {
      min-height: 202px;
      padding: 26px;
      border: 1px solid rgba(24, 21, 18, 0.10);
      border-radius: 6px;
      background: rgba(251, 249, 244, 0.56);
    }
    .ops-index {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      background: var(--paper-2);
      color: var(--ink);
      font-family: var(--mono);
      font-size: 13px;
      font-weight: 700;
    }
    .ops-card h4 {
      margin: 18px 0 14px;
      font-size: 18px;
      letter-spacing: -.02em;
    }
    .ops-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.75;
    }

    .caps-section {
      padding: 120px 0 110px;
      background: var(--paper);
      scroll-snap-align: start;
      scroll-snap-stop: always;
    }
    .caps-head { text-align: center; }
    .caps-head h2 { margin: 0; font-size: clamp(34px, 4.5vw, 54px); letter-spacing: -1.6px; }
    .caps-head p { margin: 22px auto 0; max-width: 460px; color: var(--muted); font-size: 16px; line-height: 1.8; }
    .cap-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 44px; margin-top: 84px; }
    .cap-item {
      padding: 28px 28px 26px;
      border: 1px solid rgba(24, 21, 18, 0.10);
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.72);
      box-shadow: 0 12px 30px rgba(24, 21, 18, 0.04);
    }
    .cap-step {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 42px;
      height: 42px;
      padding: 0 12px;
      margin-bottom: 18px;
      background: var(--paper-2);
      border: 1px solid rgba(24, 21, 18, 0.08);
      color: var(--ink);
      font-family: var(--mono);
      font-size: 13px;
      font-weight: 700;
    }
    .cap-item h4 { margin: 0 0 14px; font-size: 20px; letter-spacing: -.02em; }
    .cap-item p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
    .reason-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 60px;
      margin-top: 76px;
    }
    .reason-item h4 {
      margin: 0 0 14px;
      font-size: 18px;
      letter-spacing: -.02em;
    }
    .reason-line {
      width: 32px;
      height: 2px;
      margin-bottom: 14px;
      background: var(--coral);
    }
    .reason-item p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.9;
    }

    /* Buttons */
    .cta-main {
      padding: 20px 40px; background: var(--ink); color: #fff;
      font-size: 16px; font-weight: 700; border: none; cursor: pointer;
      transition: 0.3s; display: inline-block; text-decoration: none;
      border-radius: 10px;
    }
    .cta-main:hover { background: var(--coral); transform: translateY(-2px); }
    .cta-full { width: 100%; }

    /* Footer */
    footer { background: var(--ink); color: #fff; padding: 100px 0 60px; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 80px; margin-bottom: 80px; }
    .footer-col h4 { font-size: 14px; color: var(--quiet); margin-bottom: 20px; }
    .footer-col a { display: block; color: #fff; text-decoration: none; margin-bottom: 12px; font-size: 14px; opacity: 0.6; }
    .footer-col a:hover { opacity: 1; }
    .footer-brand {
      color: #fff;
      margin-bottom: 30px;
    }
    .footer-brand-mark {
      border-color: #fff;
      background: var(--ink);
    }
    .footer-note {
      font-size: 14px;
      opacity: 0.5;
      max-width: 300px;
    }
    .footer-meta {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 40px;
      font-size: 12px;
      opacity: 0.4;
    }

    @media (max-width: 850px) {
      .diagnosis-grid, .roi-box, .footer-grid, .ops-grid, .cap-grid, .reason-grid { grid-template-columns: 1fr; }
      .hero-actions { width: 100%; }
      .hero-actions .cta-main, .hero-actions .ghost-link { width: 100%; }
      .portal-intro, .portal-toolbar, .portal-grid { grid-template-columns: 1fr; }
      .portal-topbar, .portal-head { align-items: start; }
      .filter-group { justify-content: flex-start; }
      .report-paper { padding: 30px; }
      .report-detail-grid { grid-template-columns: 1fr; }
      .report-action-row { flex-direction: column; }
      .ops-section { padding: 72px 0 64px; }
      .ops-head { margin-bottom: 26px; }
      .caps-section { padding: 100px 0 80px; }
      .caps-head p { max-width: 320px; }
      .diag-rule { margin-bottom: 24px; }
      .form-card { padding: 28px 24px; box-shadow: 0 14px 30px rgba(24, 21, 18, 0.05); }
      .diagnosis-side { padding-top: 0; }
      .side-stack { position: static; margin-top: 8px; }
      .cap-item { padding: 24px 22px; }
    }