:root {
  --brand: #0b8f83;
  --brand-bright: #14b8a6;
  --brand-pale: #ddf6f1;
  --cyan: #0ea5b7;
  --navy: #12365f;
  --navy-deep: #092744;
  --ink: #17304f;
  --muted: #607289;
  --line: #dbe8e9;
  --soft: #f3faf9;
  --shadow-sm: 0 10px 30px rgba(18, 54, 95, .08);
  --shadow: 0 22px 64px rgba(18, 54, 95, .12);
  --radius: 22px;
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
html, body { overflow-x: clip; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
  background: #fff;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }
.container { width: min(calc(100% - 48px), var(--container)); margin: auto; }
.section { padding: 108px 0; }
.section-soft { background: linear-gradient(180deg, #f7fbfb 0, #eef8f6 100%); }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 99; padding: 10px 16px; border-radius: 8px; background: var(--navy); color: #fff; }
.skip-link:focus { top: 12px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.site-header { position: sticky; top: 0; z-index: 50; height: 76px; background: rgba(255, 255, 255, .93); border-bottom: 1px solid rgba(219, 232, 233, .9); backdrop-filter: blur(18px); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 28px; }
.brand { width: 178px; flex: none; }
.main-nav { display: flex; align-items: center; gap: 25px; margin-left: auto; }
.main-nav a { position: relative; padding: 26px 0 23px; color: #425a73; font-size: 14px; font-weight: 600; transition: color .2s; }
.main-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 17px; height: 2px; background: var(--brand); transition: right .2s; }
.main-nav a:hover { color: var(--brand); }
.main-nav a:hover::after { right: 0; }
.header-actions { display: flex; align-items: center; }
.menu-toggle { display: none; margin-left: auto; padding: 8px; border: 0; background: none; }
.menu-toggle > span:not(.sr-only) { display: block; width: 24px; height: 2px; margin: 5px; background: var(--navy); }

.button { display: inline-flex; min-height: 50px; padding: 0 25px; align-items: center; justify-content: center; gap: 7px; border: 1px solid transparent; border-radius: 11px; font-weight: 800; transition: transform .2s, box-shadow .2s, background .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); }
.button:focus-visible, .solution-tab:focus-visible, .solution-panel:focus-visible, .menu-toggle:focus-visible { outline: 3px solid rgba(14, 165, 183, .28); outline-offset: 3px; }
.button-primary { color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-bright)); box-shadow: 0 11px 25px rgba(11, 143, 131, .24); }
.button-secondary, .button-outline { background: #fff; color: var(--brand); border-color: #a7d9d4; }
.button-secondary:hover, .button-outline:hover { border-color: var(--brand); box-shadow: 0 9px 22px rgba(11, 143, 131, .12); }
.button-sm { min-height: 40px; padding: 0 18px; font-size: 14px; }
.button-block { width: 100%; }

.hero { position: relative; min-height: 720px; padding: 105px 0 88px; overflow: hidden; background: linear-gradient(180deg, #fff 0%, #fbfefe 100%); }
.hero-grid { position: relative; display: grid; grid-template-columns: .92fr 1.08fr; gap: 48px; align-items: center; }
.hero-copy { position: relative; z-index: 2; }
.eyebrow { margin: 0 0 16px; color: var(--brand); font-size: 14px; font-weight: 900; letter-spacing: .13em; }
.hero h1 { margin: 0; color: var(--navy); font-size: clamp(46px, 4.2vw, 60px); line-height: 1.16; letter-spacing: -.045em; }
.hero-description { max-width: 640px; margin: 26px 0 31px; color: var(--muted); font-size: 18px; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-notes { display: flex; flex-wrap: wrap; gap: 13px 20px; margin-top: 29px; color: #4d647b; font-size: 14px; }
.hero-notes span { display: flex; align-items: center; gap: 8px; }
.hero-notes i { width: 7px; height: 7px; border-radius: 50%; background: var(--brand-bright); box-shadow: 0 0 0 5px rgba(20, 184, 166, .09); }
.hero-visual { position: relative; min-height: 490px; display: flex; align-items: center; }
.hero-visual > img { position: relative; z-index: 2; width: 116%; max-width: none; margin-left: -7%; filter: drop-shadow(0 30px 38px rgba(18, 54, 95, .14)); }
.visual-backdrop { position: absolute; inset: 8% -5% 4% 0; border-radius: 50%; background: radial-gradient(circle at center, rgba(20, 184, 166, .2), rgba(14, 165, 183, .07) 57%, transparent 73%); }
.hero-orb { position: absolute; border-radius: 50%; filter: blur(1px); }
.orb-one { width: 390px; height: 390px; right: -190px; top: -115px; background: rgba(14, 165, 183, .07); }
.orb-two { width: 200px; height: 200px; left: -110px; bottom: 10px; background: rgba(20, 184, 166, .08); }
.floating-card { position: absolute; z-index: 3; display: flex; align-items: center; gap: 11px; max-width: 245px; padding: 13px 16px; background: rgba(255, 255, 255, .96); border: 1px solid #d8ece9; border-radius: 15px; box-shadow: var(--shadow); font-size: 13px; }
.floating-card span:last-child { display: flex; flex-direction: column; }
.floating-card strong { color: var(--navy); }
.floating-card small { color: var(--muted); }
.mini-icon { display: grid; place-items: center; width: 36px; height: 36px; flex: none; border-radius: 11px; background: #e4f7f3; color: var(--brand); font-weight: 900; }
.card-teaching { left: 1%; top: 12%; }
.card-growth { right: -2%; bottom: 7%; }

.proof-strip { position: relative; z-index: 4; margin-top: -28px; }
.proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.proof-item { position: relative; padding: 26px 30px; }
.proof-item:not(:last-child)::after { content: ""; position: absolute; right: 0; top: 24px; bottom: 24px; width: 1px; background: var(--line); }
.proof-item strong, .proof-item span { display: block; }
.proof-item strong { margin-bottom: 2px; color: var(--brand); font-size: 20px; }
.proof-item span { color: var(--navy); font-size: 14px; font-weight: 800; }
.proof-item p { margin: 7px 0 0; color: var(--muted); font-size: 13px; }

.section-heading { max-width: 780px; margin: 0 auto 54px; text-align: center; }
.section-heading h2, .evidence-copy h2, .booking-copy h2, .about-grid h2 { margin: 0; color: var(--navy); font-size: clamp(32px, 3.2vw, 46px); line-height: 1.28; letter-spacing: -.03em; }
.section-heading > p:last-child, .evidence-copy > p, .booking-copy > p { margin: 18px 0 0; color: var(--muted); font-size: 17px; line-height: 1.8; }

.solution-switcher { display: grid; grid-template-columns: minmax(290px, .74fr) minmax(0, 1.86fr); gap: 22px; align-items: stretch; }
.solution-tabs { align-self: start; display: grid; gap: 7px; padding: 10px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255, 255, 255, .72); }
.solution-tab { width: 100%; min-height: 76px; display: grid; grid-template-columns: 40px minmax(0, 1fr); align-items: center; gap: 12px; padding: 12px 13px; border: 1px solid transparent; border-radius: 14px; background: transparent; color: #4a627a; cursor: pointer; text-align: left; transition: color .2s, background .2s, border-color .2s, box-shadow .2s, transform .2s; }
.solution-tab:hover { border-color: #cce5e2; background: #f7fcfb; transform: translateX(2px); }
.solution-tab[aria-selected="true"] { color: #fff; border-color: transparent; background: linear-gradient(135deg, var(--navy) 0%, #0c6670 100%); box-shadow: 0 12px 28px rgba(18, 54, 95, .17); }
.solution-tab-number { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: #e5f7f4; color: var(--brand); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.solution-tab[aria-selected="true"] .solution-tab-number { background: rgba(255, 255, 255, .14); color: #73eee0; }
.solution-tab-copy { min-width: 0; }
.solution-tab-copy strong, .solution-tab-copy small { display: block; }
.solution-tab-copy strong { color: var(--navy); font-size: 14px; line-height: 1.45; }
.solution-tab-copy small { overflow: hidden; margin-top: 4px; color: #78909f; font-size: 11px; line-height: 1.4; text-overflow: ellipsis; white-space: nowrap; }
.solution-tab[aria-selected="true"] .solution-tab-copy strong { color: #fff; }
.solution-tab[aria-selected="true"] .solution-tab-copy small { color: #bcd9dd; }
.solution-panel { min-width: 0; padding: 34px; border: 1px solid #d6e7e6; border-radius: var(--radius); background: #fff; box-shadow: 0 20px 55px rgba(18, 54, 95, .1); }
.solution-lead { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; padding-bottom: 25px; border-bottom: 1px solid var(--line); }
.solution-heading-line { display: flex; align-items: center; gap: 15px; }
.solution-number { display: grid; place-items: center; width: 48px; height: 48px; flex: none; border-radius: 15px; background: linear-gradient(135deg, #ddf6f1, #e5f5fb); color: var(--brand); font-size: 13px; font-weight: 900; letter-spacing: .1em; }
.solution-panel-kicker { display: block; margin-bottom: 3px; color: var(--brand); font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.solution-lead h3 { margin: 0; color: var(--navy); font-size: 27px; line-height: 1.35; }
.solution-tags { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.solution-tags span { padding: 5px 9px; border-radius: 999px; background: #ecf8f6; color: #27766e; font-size: 11px; white-space: nowrap; }
.solution-journey { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px; margin-top: 25px; }
.journey-step { position: relative; min-height: 190px; padding: 22px 20px; border: 1px solid; border-radius: 17px; }
.journey-step:not(:last-child)::after { content: "→"; position: absolute; z-index: 2; top: 50%; right: -23px; display: grid; place-items: center; width: 30px; height: 30px; border: 1px solid var(--line); border-radius: 50%; background: #fff; color: #789a9c; font-size: 14px; font-weight: 900; transform: translateY(-50%); }
.journey-problem { border-color: #f1dfcc; background: #fffaf5; }
.journey-approach { border-color: #cceae5; background: #f1fbf9; }
.journey-outcome { border-color: #d8e7f5; background: #f4f9ff; }
.journey-order { display: block; margin-bottom: 19px; color: #9badb8; font-size: 11px; font-weight: 900; letter-spacing: .13em; }
.journey-label { display: inline-flex; margin-bottom: 11px; font-size: 13px; font-weight: 900; }
.journey-problem .journey-label { color: #8a5b35; }
.journey-approach .journey-label { color: #17746b; }
.journey-outcome .journey-label { color: #275e91; }
.solution-journey p { margin: 0; color: #526981; font-size: 14px; line-height: 1.8; }

.workflow-card { padding: 40px 35px 34px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.workflow-line { position: relative; display: grid; grid-template-columns: repeat(7, 1fr); }
.workflow-line::before { content: ""; position: absolute; left: 7%; right: 7%; top: 20px; height: 2px; background: linear-gradient(90deg, var(--brand), var(--cyan)); opacity: .33; }
.workflow-step { position: relative; text-align: center; }
.workflow-step span { position: relative; display: grid; place-items: center; width: 42px; height: 42px; margin: 0 auto 13px; border: 2px solid var(--brand-bright); border-radius: 50%; background: #fff; color: var(--brand); font-size: 12px; font-weight: 900; }
.workflow-step strong { color: #344f6b; font-size: 14px; }
.outcome-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 32px; padding-top: 27px; border-top: 1px dashed #cbdedc; }
.outcome-grid div { display: flex; align-items: center; justify-content: center; gap: 9px; color: var(--navy); font-weight: 800; }
.outcome-grid span, .device-row i { display: grid; place-items: center; width: 23px; height: 23px; flex: none; border-radius: 50%; background: var(--brand-pale); color: var(--brand); font-style: normal; font-size: 12px; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 25px; }
.capability-grid article { padding: 27px; background: #f7fbfb; border: 1px solid var(--line); border-radius: 17px; transition: transform .25s, box-shadow .25s; }
.capability-grid article:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.feature-icon { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 13px; background: linear-gradient(135deg, #e2f7f3, #e5f5fb); color: var(--brand); font-weight: 900; }
.capability-grid h3, .trust-grid h3, .evidence-points h3 { margin: 18px 0 7px; color: var(--navy); font-size: 18px; }
.capability-grid p, .trust-grid p, .evidence-points p { margin: 0; color: var(--muted); font-size: 14px; }

.ai-section { position: relative; overflow: hidden; background: linear-gradient(180deg, #f5fbfd 0%, #eef9f7 100%); }
.ai-section::before { content: ""; position: absolute; width: 520px; height: 520px; top: -260px; right: -150px; border-radius: 50%; background: radial-gradient(circle, rgba(59, 130, 246, .12), rgba(14, 165, 183, .04) 58%, transparent 72%); }
.ai-heading { position: relative; max-width: 900px; }
.ai-stage { position: relative; display: grid; grid-template-columns: minmax(0, .76fr) 44px minmax(190px, .58fr) 44px minmax(0, 1.4fr); gap: 12px; align-items: center; padding: 28px; border: 1px solid #d3e8e7; border-radius: 26px; background: rgba(255, 255, 255, .86); box-shadow: 0 24px 65px rgba(18, 54, 95, .1); }
.ai-source-card, .ai-core-card, .ai-path-card { min-width: 0; border-radius: 18px; }
.ai-source-card { padding: 25px; border: 1px solid #d7e9e7; background: linear-gradient(145deg, #f7fcfb, #edf8f6); }
.ai-card-kicker { display: block; color: var(--brand); font-size: 11px; font-weight: 900; letter-spacing: .1em; }
.ai-source-card h3 { margin: 8px 0 9px; color: var(--navy); font-size: 22px; }
.ai-source-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }
.ai-word-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
.ai-word-chips span { padding: 6px 10px; border: 1px solid #cce7e3; border-radius: 999px; background: #fff; color: #29756e; font-size: 11px; font-weight: 800; }
.ai-flow-arrow { display: grid; place-items: center; width: 36px; height: 36px; justify-self: center; border: 1px solid #cfe5e4; border-radius: 50%; background: #fff; color: var(--brand); font-size: 16px; font-weight: 900; box-shadow: 0 7px 18px rgba(18, 54, 95, .08); }
.ai-core-card { position: relative; padding: 30px 22px; overflow: hidden; background: linear-gradient(145deg, var(--navy) 0%, #0c6670 100%); color: #fff; text-align: center; box-shadow: 0 18px 36px rgba(18, 54, 95, .2); }
.ai-core-card::after { content: ""; position: absolute; width: 120px; height: 120px; right: -58px; top: -64px; border-radius: 50%; background: rgba(97, 223, 211, .18); }
.ai-core-badge { display: grid; place-items: center; width: 52px; height: 52px; margin: 0 auto 14px; border: 1px solid rgba(255, 255, 255, .22); border-radius: 17px; background: rgba(255, 255, 255, .12); color: #78f0e2; font-size: 18px; font-weight: 900; letter-spacing: .05em; }
.ai-core-card h3 { margin: 0; font-size: 19px; }
.ai-core-card p { margin: 8px 0 0; color: #c7e1e5; font-size: 12px; line-height: 1.65; }
.ai-output-grid { display: grid; gap: 10px; }
.ai-path-card { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 13px; align-items: start; padding: 18px; border: 1px solid #d9e8ee; background: #fff; }
.ai-path-step { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; background: #eaf3ff; color: #3b82f6; font-family: "SF Mono", "Roboto Mono", Consolas, monospace; font-size: 11px; font-weight: 900; }
.ai-path-2 .ai-path-step { background: #e5f8f5; color: var(--brand); }
.ai-path-3 .ai-path-step { background: #e7f7fa; color: var(--cyan); }
.ai-path-card h3 { margin: 0 0 4px; color: var(--navy); font-size: 16px; }
.ai-path-card p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.65; }
.ai-support-shell { display: grid; grid-template-columns: 1.45fr .55fr; gap: 15px; margin-top: 16px; }
.ai-support-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.ai-support-grid article { display: flex; min-width: 0; gap: 11px; align-items: center; padding: 15px 16px; border: 1px solid #d9e9e7; border-radius: 15px; background: rgba(255, 255, 255, .8); }
.ai-support-grid article > span { display: grid; place-items: center; width: 36px; height: 36px; flex: none; border-radius: 11px; background: var(--brand-pale); color: var(--brand); font-size: 12px; font-weight: 900; }
.ai-support-grid strong { display: block; color: var(--navy); font-size: 13px; }
.ai-support-grid p { margin: 2px 0 0; color: var(--muted); font-size: 11px; }
.ai-feedback-card { padding: 16px 18px; border: 1px solid #cfdfef; border-radius: 15px; background: #f7faff; }
.ai-feedback-card > span { display: block; color: #57718a; font-size: 11px; font-weight: 900; }
.ai-feedback-card > div { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 9px; }
.ai-feedback-card > div span { padding: 5px 8px; border-radius: 999px; background: #e7f0fb; color: #315f8c; font-size: 11px; font-weight: 800; }
.ai-teacher-note { display: flex; align-items: center; gap: 13px; margin-top: 16px; padding: 17px 20px; border-left: 4px solid var(--brand); border-radius: 0 15px 15px 0; background: rgba(226, 245, 242, .72); }
.ai-teacher-note > span { display: grid; place-items: center; width: 34px; height: 34px; flex: none; border-radius: 10px; background: #fff; color: var(--brand); font-weight: 900; }
.ai-teacher-note p { flex: 1; margin: 0; color: #3f626b; font-size: 13px; }
.ai-teacher-note a { flex: none; color: var(--brand); font-size: 13px; font-weight: 900; }

.roles-section { background: linear-gradient(135deg, #102f57 0%, #0c5562 100%); color: #fff; }
.roles-section .section-heading { max-width: 1120px; }
.roles-section .section-heading h2 { color: #fff; }
.roles-section .section-heading > p:last-child { color: #c4d7df; }
.eyebrow-light { color: #69e2d5; }
.stakeholder-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.stakeholder-card { position: relative; min-width: 0; padding: 30px 28px 27px; overflow: hidden; border: 1px solid rgba(255, 255, 255, .16); border-radius: 20px; background: rgba(255, 255, 255, .98); box-shadow: 0 20px 48px rgba(0, 0, 0, .16); color: var(--ink); }
.stakeholder-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: linear-gradient(90deg, var(--brand), var(--brand-bright)); }
.stakeholder-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.stakeholder-marker { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 15px; background: linear-gradient(135deg, #ddf6f1, #e5f5fb); color: var(--brand); font-size: 13px; font-weight: 900; }
.stakeholder-index { color: #9bb0bc; font-family: "SF Mono", "Roboto Mono", Consolas, monospace; font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.stakeholder-label { color: var(--brand); font-size: 13px; font-weight: 900; letter-spacing: .06em; }
.stakeholder-card h3 { min-height: 82px; margin: 8px 0 12px; color: var(--navy); font-size: 23px; line-height: 1.48; }
.stakeholder-card > p { min-height: 72px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.stakeholder-card ul, .price-card ul { list-style: none; margin: 24px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line); }
.stakeholder-card li, .price-card li { display: flex; align-items: flex-start; gap: 10px; margin: 11px 0; color: #425c76; font-size: 14px; }
.stakeholder-card li span, .price-card li span { color: var(--brand); font-weight: 900; }
.fit-shell { margin-top: 22px; padding: 25px 27px 27px; border: 1px solid rgba(255, 255, 255, .15); border-radius: 20px; background: rgba(5, 29, 52, .28); }
.fit-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; margin-bottom: 18px; }
.fit-heading > span { color: #69e2d5; font-size: 12px; font-weight: 900; letter-spacing: .08em; white-space: nowrap; }
.fit-heading h3 { margin: 0; color: #fff; font-size: 20px; line-height: 1.5; }
.fit-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.fit-signal { display: flex; min-width: 0; gap: 11px; padding: 16px 15px; border: 1px solid rgba(255, 255, 255, .12); border-radius: 13px; background: rgba(255, 255, 255, .07); }
.fit-number { padding-top: 2px; color: #69e2d5; font-family: "SF Mono", "Roboto Mono", Consolas, monospace; font-size: 10px; font-weight: 900; letter-spacing: .08em; }
.fit-signal strong { display: block; color: #fff; font-size: 14px; }
.fit-signal p { margin: 4px 0 0; color: #bbd0d8; font-size: 12px; line-height: 1.6; }

.evidence-section { overflow: hidden; }
.evidence-grid { display: grid; grid-template-columns: .88fr 1.12fr; gap: 60px; align-items: center; }
.evidence-copy h2 { max-width: 570px; }
.evidence-points { display: grid; gap: 13px; margin: 30px 0 28px; }
.evidence-points article { display: flex; gap: 13px; padding: 17px 18px; border: 1px solid #e1ecec; border-radius: 14px; background: #f9fcfc; }
.evidence-points h3 { margin: 0 0 3px; font-size: 16px; }
.evidence-check, .trust-check { display: grid; place-items: center; width: 28px; height: 28px; flex: none; border-radius: 9px; background: var(--brand-pale); color: var(--brand); font-weight: 900; }
.inline-link { color: var(--brand); font-weight: 800; }
.product-frame { position: relative; margin: 0; padding: 25px 25px 18px; background: #fff; border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow); }
.product-frame::before { content: "产品实景"; position: absolute; top: 17px; left: 20px; z-index: 2; padding: 5px 10px; border-radius: 999px; background: rgba(9, 39, 68, .9); color: #fff; font-size: 11px; font-weight: 800; }
.product-frame img { filter: drop-shadow(0 20px 30px rgba(18, 54, 95, .13)); }
.product-frame figcaption { margin-top: 8px; color: var(--muted); text-align: center; font-size: 12px; }
.device-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 35px; }
.device-row > span { display: flex; align-items: center; justify-content: center; gap: 9px; padding: 15px; border: 1px solid var(--line); border-radius: 13px; color: var(--navy); font-size: 14px; font-weight: 800; }

.pricing-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; max-width: 1160px; margin: 0 auto; align-items: stretch; }
.price-card { position: relative; display: flex; min-width: 0; flex-direction: column; padding: 32px; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 22px; }
.price-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 5px; background: var(--brand-bright); }
.price-card.mode-independent::before { background: var(--navy); }
.price-card.mode-shared { box-shadow: 0 18px 46px rgba(11, 143, 131, .12); }
.price-card.mode-independent { box-shadow: 0 18px 46px rgba(18, 54, 95, .09); }
.mode-card-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.mode-number { color: #92aaa9; font-family: "SF Mono", "Roboto Mono", Consolas, monospace; font-size: 12px; font-weight: 900; letter-spacing: .12em; }
.mode-badge { padding: 6px 10px; border-radius: 999px; background: var(--brand-pale); color: var(--brand); font-size: 12px; font-weight: 900; }
.mode-independent .mode-badge { background: #eaf1f8; color: var(--navy); }
.mode-type { margin: 24px 0 7px; color: var(--brand); font-size: 13px; font-weight: 900; letter-spacing: .06em; }
.mode-independent .mode-type { color: #416687; }
.price-card h3 { margin: 0; color: var(--navy); font-size: 28px; }
.audience { min-height: 50px; margin: 10px 0 22px; color: var(--muted); font-size: 14px; line-height: 1.75; }
.mode-summary { min-height: 144px; padding: 22px; border-radius: 17px; background: linear-gradient(145deg, #ecf9f7, #f8fdfc); border: 1px solid #d5ece8; }
.mode-independent .mode-summary { background: linear-gradient(145deg, #eef4fa, #fbfdff); border-color: #d9e5f0; }
.mode-summary > span { display: block; color: #557273; font-size: 12px; font-weight: 800; }
.mode-summary strong { display: block; margin-top: 7px; color: var(--brand); font-size: clamp(21px, 2.2vw, 28px); line-height: 1.38; }
.mode-independent .mode-summary strong { color: var(--navy); }
.mode-summary p { margin: 9px 0 0; color: #56707c; font-size: 13px; line-height: 1.65; }
.mode-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 16px 0 20px; }
.mode-facts div { min-width: 0; padding: 14px 15px; border: 1px solid var(--line); border-radius: 13px; background: #fbfdfd; }
.mode-facts dt { color: #708392; font-size: 11px; }
.mode-facts dd { margin: 5px 0 0; color: var(--navy); font-size: 13px; font-weight: 800; line-height: 1.55; }
.mode-features { flex: 1; margin: 0 0 25px; padding-top: 2px; }
.mode-features li { display: flex; gap: 10px; align-items: flex-start; color: #425b70; font-size: 14px; line-height: 1.65; }
.mode-features li + li { margin-top: 10px; }
.mode-features li span { color: var(--brand); font-weight: 900; }
.pricing-comparison { max-width: 1160px; margin: 28px auto 0; padding: 28px 30px 30px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255, 255, 255, .78); }
.pricing-comparison-heading { display: flex; align-items: baseline; gap: 13px; margin-bottom: 17px; }
.pricing-comparison-heading span { color: var(--brand); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.pricing-comparison-heading h3 { margin: 0; color: var(--navy); font-size: 21px; }
.pricing-compare-table { overflow: hidden; border: 1px solid #d9e8e7; border-radius: 14px; }
.pricing-compare-row { display: grid; grid-template-columns: 135px repeat(2, minmax(0, 1fr)); }
.pricing-compare-row > * { min-width: 0; padding: 14px 16px; border-right: 1px solid #d9e8e7; color: #526b7e; font-size: 13px; line-height: 1.65; }
.pricing-compare-row > *:last-child { border-right: 0; }
.pricing-compare-row + .pricing-compare-row { border-top: 1px solid #d9e8e7; }
.pricing-compare-row > strong:first-child { color: var(--navy); }
.pricing-compare-header { background: #eef8f6; }
.pricing-compare-header > * { color: #266b67; font-weight: 900; }
.pricing-boundary { max-width: 1050px; margin: 24px auto 0; padding: 17px 20px; border-left: 4px solid var(--brand); border-radius: 0 12px 12px 0; background: rgba(226, 245, 242, .75); color: #385d65; font-size: 14px; line-height: 1.75; }
.pricing-note { max-width: 900px; margin: 18px auto 0; color: var(--muted); text-align: center; font-size: 12px; line-height: 1.75; }

.service-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 35px; }
.service-steps article { position: relative; padding: 22px 18px; border: 1px solid var(--line); border-radius: 15px; background: #fff; text-align: left; }
.service-steps article > span { display: grid; place-items: center; width: 34px; height: 34px; margin-bottom: 15px; border-radius: 50%; background: var(--brand); color: #fff; font-size: 13px; font-weight: 900; }
.service-steps strong { color: var(--navy); font-size: 15px; }
.service-steps p { margin: 7px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.trust-grid article { display: flex; gap: 13px; padding: 22px; background: #f5faf9; border: 1px solid #dfedeb; border-radius: 15px; }
.trust-grid h3 { margin: 0 0 6px; }

.booking-section { background: linear-gradient(135deg, #0e345c 0%, #0b5964 100%); color: #fff; }
.booking-shell { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; }
.booking-copy h2 { color: #fff; }
.booking-copy > p { color: #cadbe3; }
.scan-steps { display: grid; gap: 12px; margin-top: 34px; }
.scan-steps div { display: flex; align-items: center; gap: 12px; color: #e5eff4; }
.scan-steps span { display: grid; place-items: center; width: 31px; height: 31px; flex: none; border: 1px solid rgba(103, 227, 213, .42); border-radius: 50%; background: rgba(103, 227, 213, .14); color: #67e3d5; font-weight: 900; }
.contact-card { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 34px; }
.contact-card div { padding: 14px 16px; border: 1px solid rgba(255, 255, 255, .15); border-radius: 12px; background: rgba(255, 255, 255, .06); }
.contact-card div:last-child { grid-column: 1 / -1; }
.contact-card span { display: block; color: #9dc1ca; font-size: 12px; }
.contact-card strong { font-size: 15px; }
.qr-card { justify-self: center; width: min(100%, 390px); padding: 30px; background: #fff; color: var(--ink); border-radius: 24px; box-shadow: 0 24px 60px rgba(0, 0, 0, .22); text-align: center; }
.qr-frame { width: min(100%, 280px); aspect-ratio: 1; margin: 0 auto 20px; padding: 10px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.qr-frame img { width: 100%; height: 100%; object-fit: contain; }
.qr-label { margin: 0 0 5px; color: var(--brand); font-size: 18px; font-weight: 900; }
.qr-card strong { display: block; color: var(--navy); font-size: 16px; }
.qr-card > span { display: block; margin-top: 10px; color: var(--muted); font-size: 13px; }

.about-strip { padding: 64px 0; background: #e9f7f4; }
.about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 75px; align-items: center; }
.about-grid .eyebrow { margin-bottom: 10px; }
.about-grid h2 { font-size: clamp(28px, 2.6vw, 38px); }
.about-grid > p { margin: 0; color: #526b78; font-size: 16px; line-height: 1.9; }

.site-footer { padding: 62px 0 26px; background: var(--navy-deep); color: #b5c7d5; }
.footer-main { display: grid; grid-template-columns: 1.25fr 2fr; gap: 80px; padding-bottom: 45px; }
.footer-brand img { width: 188px; }
.footer-brand p { max-width: 330px; margin: 18px 0 0; font-size: 14px; }
.footer-groups { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.footer-groups h3 { margin: 0 0 15px; color: #fff; font-size: 14px; }
.footer-groups a { display: block; margin: 9px 0; font-size: 13px; transition: color .2s; }
.footer-groups a:hover, .filing-links a:hover { color: #61dfd3; }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .1); font-size: 12px; }
.footer-bottom > div { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.filing-links { justify-content: flex-end; }
.config-warning { position: fixed; z-index: 100; left: 50%; bottom: 20px; transform: translateX(-50%); max-width: calc(100% - 32px); padding: 13px 18px; border: 1px solid #e8c56f; border-radius: 10px; background: #fff4d9; color: #7b5812; box-shadow: var(--shadow); font-size: 14px; }

@media (max-width: 1080px) {
  .main-nav { gap: 15px; }
  .main-nav a { font-size: 13px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 78px; }
  .hero-copy { max-width: 820px; margin: auto; text-align: center; }
  .hero-description { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-notes { justify-content: center; }
  .hero-visual { width: min(100%, 800px); min-height: 430px; margin: auto; }
  .solution-switcher { grid-template-columns: 260px minmax(0, 1fr); gap: 16px; }
  .solution-panel { padding: 28px; }
  .solution-lead { align-items: flex-start; flex-direction: column; gap: 15px; }
  .solution-tags { justify-content: flex-start; }
  .solution-journey { grid-template-columns: 1fr; }
  .journey-step { min-height: auto; }
  .journey-step:not(:last-child)::after { content: "↓"; top: auto; right: 50%; bottom: -23px; transform: translate(50%, 0); }
  .capability-grid, .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-stage { grid-template-columns: minmax(0, .9fr) minmax(220px, .7fr); }
  .ai-source-card { grid-column: 1; }
  .ai-core-card { grid-column: 2; }
  .ai-flow-arrow { display: none; }
  .ai-output-grid { grid-column: 1 / -1; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ai-path-card { display: block; }
  .ai-path-step { margin-bottom: 12px; }
  .ai-support-shell { grid-template-columns: 1fr; }
  .evidence-grid { grid-template-columns: 1fr; }
  .evidence-copy { max-width: 760px; }
  .product-frame { width: min(100%, 850px); margin: auto; }
}

@media (max-width: 820px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .section { padding: 78px 0; }
  .site-header { height: 68px; }
  .brand { width: 154px; }
  .menu-toggle { display: block; }
  .header-actions { display: none; }
  .main-nav { position: absolute; z-index: 60; top: 100%; left: 0; right: 0; height: calc(100dvh - 68px); overflow-y: auto; display: flex; visibility: hidden; opacity: 0; flex-direction: column; align-items: stretch; gap: 0; padding: 20px 24px; margin: 0; background: #fff; transform: translateX(100%); transition: transform .25s, opacity .2s; }
  .main-nav.open { visibility: visible; opacity: 1; transform: translateX(0); }
  .main-nav a { padding: 16px 5px; border-bottom: 1px solid var(--line); font-size: 17px; }
  .main-nav a::after { display: none; }
  .hero { min-height: auto; padding-top: 66px; }
  .hero h1 { font-size: 43px; }
  .hero-description { font-size: 16px; }
  .hero-visual { min-height: 350px; }
  .floating-card { display: none; }
  .proof-grid { grid-template-columns: 1fr; }
  .proof-item:not(:last-child)::after { left: 24px; right: 24px; top: auto; bottom: 0; width: auto; height: 1px; }
  .solution-switcher { grid-template-columns: 1fr; }
  .solution-tabs { display: flex; overflow-x: auto; gap: 8px; padding: 5px; border: 0; border-radius: 0; background: transparent; scrollbar-width: none; scroll-snap-type: x proximity; -ms-overflow-style: none; }
  .solution-tabs::-webkit-scrollbar { display: none; }
  .solution-tab { min-width: 245px; min-height: 72px; border-color: var(--line); background: rgba(255, 255, 255, .72); scroll-snap-align: start; }
  .solution-tab:hover { transform: none; }
  .workflow-line { grid-template-columns: repeat(4, 1fr); gap: 24px 5px; }
  .workflow-line::before { display: none; }
  .stakeholder-grid { grid-template-columns: 1fr; }
  .ai-stage { grid-template-columns: 1fr; padding: 22px; }
  .ai-source-card, .ai-core-card, .ai-output-grid { grid-column: 1; }
  .ai-output-grid { grid-template-columns: 1fr; }
  .ai-path-card { display: grid; }
  .ai-path-step { margin-bottom: 0; }
  .stakeholder-card h3, .stakeholder-card > p { min-height: 0; }
  .fit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .device-row { grid-template-columns: repeat(2, 1fr); }
  .service-steps { grid-template-columns: repeat(2, 1fr); }
  .booking-shell { grid-template-columns: 1fr; gap: 42px; }
  .about-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-main { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; }
  .filing-links { justify-content: flex-start; }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 24px), var(--container)); }
  .section { padding: 64px 0; }
  .section-heading { margin-bottom: 36px; text-align: left; }
  .section-heading h2, .evidence-copy h2, .booking-copy h2 { font-size: 30px; }
  .hero { padding-top: 54px; padding-bottom: 66px; }
  .hero-copy { text-align: left; }
  .hero h1 { font-size: 38px; letter-spacing: -.035em; }
  .hero-description { margin-top: 22px; line-height: 1.75; }
  .hero-actions { flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .hero-notes { justify-content: flex-start; gap: 10px 14px; }
  .hero-visual { min-height: 235px; margin-top: 25px; }
  .hero-visual > img { width: 126%; margin-left: -13%; }
  .proof-strip { margin-top: -24px; }
  .proof-item { padding: 22px; }
  .solution-panel { padding: 24px 19px; }
  .solution-lead h3 { font-size: 22px; }
  .solution-heading-line { align-items: flex-start; }
  .solution-number { width: 42px; height: 42px; border-radius: 13px; }
  .solution-journey { gap: 15px; margin-top: 20px; }
  .journey-step { padding: 19px 17px; }
  .workflow-card { padding: 26px 14px; }
  .workflow-line { grid-template-columns: repeat(2, 1fr); }
  .outcome-grid { grid-template-columns: 1fr; }
  .outcome-grid div { justify-content: flex-start; }
  .capability-grid, .pricing-grid, .trust-grid { grid-template-columns: 1fr; }
  .capability-grid { gap: 12px; }
  .ai-stage { padding: 14px; border-radius: 20px; }
  .ai-source-card { padding: 21px 18px; }
  .ai-core-card { padding: 25px 18px; }
  .ai-path-card { grid-template-columns: 38px minmax(0, 1fr); padding: 16px 14px; }
  .ai-path-step { width: 38px; height: 38px; }
  .ai-support-grid { grid-template-columns: 1fr; }
  .ai-teacher-note { align-items: flex-start; flex-wrap: wrap; padding: 16px; }
  .ai-teacher-note p { flex-basis: calc(100% - 50px); }
  .ai-teacher-note a { width: 100%; padding-left: 47px; }
  .stakeholder-grid { gap: 12px; }
  .stakeholder-card { padding: 20px 18px 18px; }
  .stakeholder-top { margin-bottom: 14px; }
  .stakeholder-marker { width: 42px; height: 42px; border-radius: 13px; font-size: 12px; }
  .stakeholder-card h3 { margin: 6px 0 8px; font-size: 20px; line-height: 1.45; }
  .stakeholder-card > p { font-size: 13px; line-height: 1.65; }
  .stakeholder-card ul { margin-top: 15px; padding-top: 13px; }
  .stakeholder-card li { margin: 7px 0; font-size: 13px; }
  .fit-shell { padding: 20px 14px 16px; }
  .fit-heading { display: block; }
  .fit-heading h3 { margin-top: 6px; font-size: 18px; }
  .fit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .fit-signal { display: block; padding: 13px 12px; }
  .fit-number { display: block; margin-bottom: 6px; }
  .product-frame { padding: 14px 10px 12px; border-radius: 18px; }
  .product-frame::before { top: 9px; left: 10px; }
  .device-row { grid-template-columns: 1fr; gap: 9px; }
  .price-card { padding: 26px 21px; }
  .price-card h3 { font-size: 25px; }
  .audience { min-height: 0; }
  .mode-summary { min-height: 0; padding: 19px 17px; }
  .mode-summary strong { font-size: 23px; }
  .mode-facts { grid-template-columns: 1fr; }
  .pricing-comparison { padding: 23px 16px 18px; }
  .pricing-comparison-heading { display: block; }
  .pricing-comparison-heading h3 { margin-top: 5px; }
  .pricing-compare-header { display: none; }
  .pricing-compare-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pricing-compare-row > * { border-right: 0; }
  .pricing-compare-row > strong:first-child { grid-column: 1 / -1; padding-bottom: 7px; background: #f3f9f8; }
  .pricing-compare-row > span { padding-top: 11px; }
  .pricing-compare-row > span + span { border-left: 1px solid #d9e8e7; }
  .pricing-compare-row > span::before { display: block; margin-bottom: 4px; color: #799091; font-size: 10px; font-weight: 800; }
  .pricing-compare-row > span:nth-child(2)::before { content: "小微机构入驻"; }
  .pricing-compare-row > span:nth-child(3)::before { content: "机构独立品牌"; }
  .pricing-boundary { padding: 15px 16px; }
  .device-row > span { justify-content: flex-start; }
  .audience { min-height: auto; }
  .service-steps { grid-template-columns: 1fr; }
  .service-steps article { display: flex; gap: 14px; }
  .service-steps article > span { margin: 0; }
  .contact-card { grid-template-columns: 1fr; }
  .contact-card div:last-child { grid-column: auto; }
  .qr-card { padding: 20px; }
  .qr-frame { max-width: 240px; }
  .about-strip { padding: 52px 0; }
  .footer-groups { grid-template-columns: repeat(2, 1fr); }
  .footer-main { padding-bottom: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}