@charset "UTF-8";

/* LineMesh: a restrained developer-platform layout. */
:root {
  color-scheme: dark;
  --bg: #101211;
  --surface: #151816;
  --surface-raised: #191d1a;
  --surface-muted: #1d211e;
  --border: #2a302c;
  --border-strong: #3a423d;
  --text: #f1f2f0;
  --muted: #9ca5a0;
  --muted-2: #737e77;
  --green: #3ecf8e;
  --green-light: #69e2a7;
  --green-soft: rgba(62, 207, 142, .085);
  --radius: 10px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  min-width: 320px;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "Noto Sans", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: rgba(62, 207, 142, .35); color: white; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
svg { display: block; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { letter-spacing: -.045em; font-weight: 620; line-height: 1.16; }
p { color: var(--muted); }
.container { width: min(1180px, calc(100% - 64px)); margin-inline: auto; }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
.skip-link { position: absolute; top: -100px; left: 16px; z-index: 99; padding: 10px 16px; background: var(--green); color: #071109; }
.skip-link:focus { top: 16px; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(16,18,17,.95); border-bottom: 1px solid var(--border); backdrop-filter: blur(16px); }
.nav-container { min-height: 67px; display: flex; align-items: center; gap: 35px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-size: 20px; font-weight: 680; letter-spacing: -.06em; line-height: 1; white-space: nowrap; }
.brand-icon { flex: none; width: 29px; height: 29px; }
.brand-point { color: var(--green); }
.desktop-nav { display: flex; align-items: center; gap: 26px; margin-left: 17px; }
.desktop-nav a { color: #b6beb9; font-size: 12px; font-weight: 520; white-space: nowrap; }
.desktop-nav a:hover, .footer-links a:hover { color: var(--text); }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 17px; }
.languages { display: flex; gap: 3px; padding: 3px; border: 1px solid var(--border); border-radius: 7px; }
.languages a { padding: 5px 6px; border-radius: 4px; color: var(--muted-2); font: 11px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace; white-space: nowrap; }
.languages a:hover { color: var(--text); }
.languages a[aria-current="page"] { background: #303833; color: var(--text); }
.nav-cta { display: inline-flex; gap: 12px; align-items: center; padding: 9px 12px; border: 1px solid var(--border-strong); border-radius: 6px; font-size: 12px; font-weight: 570; white-space: nowrap; }
.nav-cta:hover { background: var(--surface-muted); }
.nav-cta span { color: var(--green); font-size: 15px; }

.button { min-height: 43px; display: inline-flex; justify-content: center; align-items: center; gap: 20px; padding: 11px 17px; border: 1px solid transparent; border-radius: 7px; font-size: 13px; font-weight: 610; white-space: nowrap; transition: background-color .16s, border-color .16s; }
.button span { font-size: 16px; line-height: 1; }
.button-primary { color: #082112; background: var(--green); border-color: #51d49c; box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18); }
.button-primary:hover { background: var(--green-light); }
.button-secondary { color: var(--text); background: #222623; border-color: #343b36; }
.button-secondary:hover { background: #2b312c; border-color: #48514a; }
.section { padding: 108px 0; border-top: 1px solid var(--border); }
.section-label { color: var(--green); font-size: 11px; font-weight: 620; letter-spacing: .025em; margin-bottom: 20px; }
.section-label::before { content: "/ "; opacity: .6; }
.overline { color: var(--green); font-size: 11px; font-weight: 620; letter-spacing: .025em; }
.overline-dark { color: var(--green); }
.section-header { display: flex; justify-content: space-between; align-items: end; gap: 45px; margin-bottom: 40px; }
.section-header h2 { max-width: 650px; font-size: clamp(32px, 3.4vw, 46px); }
.section-description { max-width: 380px; padding-bottom: 4px; font-size: 14px; line-height: 1.85; }
h2 { font-size: clamp(32px, 3.5vw, 47px); }

.hero { overflow: hidden; }
.hero-content { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); align-items: center; gap: clamp(35px, 6vw, 85px); padding-top: 108px; padding-bottom: 106px; }
.hero-copy { min-width: 0; }
.hero-eyebrow { width: fit-content; display: inline-flex; align-items: center; gap: 12px; border: 1px solid var(--border-strong); background: var(--surface); border-radius: 100px; padding: 8px 12px; color: #c8d2cb; font-size: 10px; font-weight: 590; letter-spacing: .015em; line-height: 1.35; }
.eyebrow-dot { flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
.eyebrow-arrow { color: var(--green); font-size: 14px; margin-left: 3px; }
.hero h1 { margin: 32px 0 25px; font-size: clamp(50px, 5.7vw, 77px); font-weight: 650; line-height: 1.09; letter-spacing: -.065em; }
.hero h1 span { color: var(--green); }
.hero-description { max-width: 540px; margin-bottom: 31px; font-size: 17px; line-height: 1.83; color: #afb8b1; }
.hero-actions { display: flex; gap: 11px; flex-wrap: wrap; }
.hero-preview { min-width: 0; background: #161a17; border: 1px solid #38423a; border-radius: 11px; overflow: hidden; box-shadow: 0 16px 70px rgba(0, 0, 0, .20); }
.preview-top { height: 49px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border); padding: 0 13px 0 0; }
.preview-tabs { align-self: stretch; display: flex; align-items: stretch; gap: 3px; }
.preview-tab { display: flex; align-items: center; padding: 0 17px; font: 11px ui-monospace, SFMono-Regular, Consolas, monospace; color: #67786d; }
.preview-tab-active { position: relative; color: #e3ece5; background: #1e2420; border-right: 1px solid var(--border); }
.preview-tab-active::before { content: ""; position: absolute; inset: auto 0 0; height: 2px; background: var(--green); }
.preview-badge { display: inline-flex; align-items: center; gap: 8px; font: 10px ui-monospace, SFMono-Regular, Consolas, monospace; color: #9cad9f; }
.preview-badge span { width: 6px; height: 6px; background: var(--green); border-radius: 50%; }
.preview-code { padding: 23px 12px 24px 4px; overflow-x: auto; font: 12px/2.08 ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; scrollbar-width: thin; scrollbar-color: #3b4a40 transparent; }
.code-line { display: flex; align-items: start; white-space: pre; min-width: max-content; color: #c5d0c8; }
.line-no { display: inline-block; width: 41px; padding-right: 13px; flex: 0 0 41px; text-align: right; user-select: none; color: #536258; }
.code-key { color: #a6c9b9; }
.code-string { color: #7cdda5; }
.code-number { color: #e4bd81; }
.code-brace { color: #b7c3b9; }
.preview-footer { display: flex; align-items: center; gap: 9px; padding: 13px 19px; border-top: 1px solid var(--border); color: #85938a; font-size: 11px; line-height: 1.55; }
.preview-footer-icon { font-size: 17px; color: var(--green); }
.preview-footer-right { margin-left: auto; color: #627467; white-space: nowrap; font: 10px ui-monospace, SFMono-Regular, Consolas, monospace; }
.hero-capabilities { display: flex; flex-wrap: wrap; align-items: center; gap: 22px 33px; padding-top: 25px; padding-bottom: 25px; border-top: 1px solid var(--border); }
.capability-label { margin-right: auto; color: var(--muted-2); font-size: 10px; letter-spacing: .08em; font-weight: 670; }
.capability-item { display: flex; align-items: center; gap: 9px; font-size: 12px; color: #bac4bc; }
.capability-check { color: var(--green); font-size: 13px; font-weight: 650; }

.product-section { background: #131615; }
.features-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.feature-card { min-height: 264px; display: flex; flex-direction: column; padding: 25px 28px 19px; border: 1px solid var(--border); border-radius: var(--radius); background: #1a1e1b; }
.feature-card:hover { border-color: #49594d; }
.feature-heading { display: flex; justify-content: space-between; align-items: start; }
.feature-icon { width: 42px; height: 42px; display: grid; place-items: center; color: var(--green); border: 1px solid #35473a; border-radius: 9px; background: rgba(62, 207, 142, .05); }
.feature-icon svg { width: 26px; height: 26px; }
.feature-index { color: #66746b; font: 11px ui-monospace, SFMono-Regular, Consolas, monospace; }
.feature-body { margin-top: 30px; margin-bottom: 32px; }
.feature-body h3 { font-size: 22px; font-weight: 610; margin-bottom: 12px; }
.feature-body p { max-width: 410px; font-size: 14px; line-height: 1.8; }
.feature-footer { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding-top: 13px; margin-top: auto; border-top: 1px solid #2b322d; color: #6e8274; font: 10px ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .04em; }
.feature-footer span:last-child { color: var(--green); font-size: 17px; }

.pipeline-section { background: var(--bg); }
.pipeline-box { overflow: hidden; border: 1px solid var(--border-strong); border-radius: var(--radius); background: #171b18; }
.pipeline-top { display: flex; justify-content: space-between; gap: 12px; padding: 16px 24px; border-bottom: 1px solid var(--border); color: #9aaa9d; font: 11px ui-monospace, SFMono-Regular, Consolas, monospace; }
.pipeline-top span:last-child { color: #65796c; }
.pipeline-flow { display: flex; align-items: center; padding: 45px 46px; gap: 20px; }
.pipeline-node { min-width: 0; display: flex; flex-direction: column; justify-content: center; flex: 1; min-height: 148px; padding: 24px; background: #202621; border: 1px solid #343d36; border-radius: 8px; }
.pipeline-core { border-color: #397b55; background: #1b3024; }
.node-caption { color: #8a9e8d; font: 10px ui-monospace, SFMono-Regular, Consolas, monospace; margin-bottom: 18px; }
.pipeline-core .node-caption { color: #7fce9e; }
.pipeline-node strong { font-size: 19px; line-height: 1.3; font-weight: 620; letter-spacing: -.025em; }
.node-desc { margin-top: 9px; color: #7c8c7e; font: 10px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace; }
.pipeline-connector { display: flex; align-items: center; gap: 5px; flex: 0 0 38px; color: var(--green); font-size: 17px; }
.pipeline-connector span { flex: 1; height: 1px; background: #3d6449; }
.pipeline-bottom { padding: 16px 24px; border-top: 1px solid var(--border); color: #819186; font-size: 12px; line-height: 1.6; }
.steps-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 46px; }
.step { padding: 5px 29px 0 0; }
.step + .step { padding-left: 29px; border-left: 1px solid var(--border); }
.step-index { margin-bottom: 25px; color: var(--green); font: 12px ui-monospace, SFMono-Regular, Consolas, monospace; }
.step h3 { font-size: 19px; margin-bottom: 12px; }
.step p { max-width: 315px; font-size: 13px; line-height: 1.85; }

.audience-section { background: #131615; }
.audience-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.audience-grid article { min-height: 250px; display: flex; flex-direction: column; padding: 26px; border: 1px solid var(--border); background: #1a1e1b; border-radius: var(--radius); }
.audience-number { color: #77867b; font: 12px ui-monospace, SFMono-Regular, Consolas, monospace; }
.audience-grid h3 { margin: 49px 0 13px; font-size: 21px; }
.audience-grid p { font-size: 13px; line-height: 1.85; }
.audience-arrow { margin-top: auto; align-self: end; color: var(--green); font-size: 18px; }
.pricing-section { padding: 65px 0; }
.pricing-panel { display: flex; gap: 40px; align-items: center; justify-content: space-between; border: 1px solid #3a5140; background: #18281d; border-radius: 12px; padding: clamp(28px, 5vw, 62px); }
.pricing-panel > div { max-width: 760px; }
.pricing-panel h2 { font-size: clamp(30px, 3.5vw, 44px); margin-bottom: 17px; }
.pricing-panel p:not(.section-label) { max-width: 630px; font-size: 14px; line-height: 1.85; }
.pricing-panel .button { flex: 0 0 auto; }

.faq-section { background: var(--bg); }
.faq-layout { display: grid; grid-template-columns: .77fr 1.23fr; gap: 80px; }
.faq-list { border-top: 1px solid var(--border-strong); }
.faq-list details { border-bottom: 1px solid var(--border); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 22px; padding: 23px 0; color: #e6ece7; cursor: pointer; list-style: none; font-size: 15px; font-weight: 560; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--green); font-size: 22px; font-weight: 350; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list details p { max-width: 590px; padding-right: 25px; margin: -3px 0 24px; font-size: 13px; line-height: 1.9; }

.contact-section { background: #151917; }
.contact-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(35px, 7vw, 90px); }
.contact-copy h2 { max-width: 460px; font-size: clamp(38px, 4vw, 56px); margin-bottom: 23px; }
.contact-copy > p:not(.section-label) { max-width: 420px; font-size: 15px; line-height: 1.85; }
.contact-watermark { margin-top: 100px; font-size: 80px; line-height: 1; font-weight: 700; letter-spacing: -.095em; color: #263c2d; user-select: none; }
.form-panel { padding: 29px; border: 1px solid #343e36; background: #1c211e; border-radius: 11px; }
.form-header { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-bottom: 18px; margin-bottom: 24px; border-bottom: 1px solid var(--border-strong); }
.form-header h3 { font-size: 20px; font-weight: 590; }
.form-header span { color: var(--green); font-size: 20px; }
.form-panel form { display: grid; gap: 17px; }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.form-panel label:not(.trap):not(.consent) { display: flex; flex-direction: column; gap: 8px; color: #c3cdc5; font-size: 12px; font-weight: 570; }
.form-panel label b { color: var(--green); font-weight: 650; }
.form-panel .optional { color: #89968b; font-weight: 430; }
.form-panel input:not([type="hidden"]):not([type="checkbox"]), .form-panel select, .form-panel textarea { display: block; width: 100%; min-width: 0; padding: 11px 12px; border: 1px solid #3b463e; border-radius: 6px; background: #151a16; color: var(--text); outline: none; font-size: 13px; font-weight: 450; transition: border-color .15s; }
.form-panel input::placeholder, .form-panel textarea::placeholder { color: #758279; }
.form-panel input:focus, .form-panel select:focus, .form-panel textarea:focus { border-color: var(--green) !important; }
.form-panel select { appearance: auto; color-scheme: dark; }
.form-panel textarea { min-height: 90px; resize: vertical; }
.form-panel .trap { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.form-panel .consent { display: flex; gap: 10px; align-items: start; color: #9faea2; font-size: 11px; line-height: 1.75; cursor: pointer; }
.form-panel .consent input { flex: 0 0 15px; height: 15px; margin: 4px 0 0; accent-color: var(--green); }
.form-panel .consent a { color: var(--green); text-decoration: underline; text-underline-offset: 3px; }
.form-submit { width: 100%; justify-content: space-between; }
.form-note { color: #8a978b; font-size: 11px; margin-top: -4px; }
.form-error { padding: 12px 14px; margin-bottom: 20px; border: 1px solid #86594e; background: #34221e; color: #ffc7bb; border-radius: 5px; font-size: 12px; }

.site-footer { padding: 60px 0 25px; background: #101211; border-top: 1px solid var(--border); }
.footer-grid { display: flex; align-items: start; flex-wrap: wrap; justify-content: space-between; gap: 44px 30px; }
.footer-brand p { margin-top: 16px; font-size: 12px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px 28px; max-width: 600px; }
.footer-links a { color: #aeb9b0; font-size: 12px; }
.footer-bottom { width: 100%; display: flex; justify-content: space-between; gap: 16px; padding-top: 21px; border-top: 1px solid var(--border); color: #768279; font: 10px ui-monospace, SFMono-Regular, Consolas, monospace; }

.legal-page { min-height: 65vh; padding: 88px 0 120px; }
.legal-wrap { width: min(850px, calc(100% - 64px)); margin-inline: auto; }
.back-link { display: inline-block; color: var(--green); font-size: 13px; margin-bottom: 65px; }
.legal-page h1, .thanks-page h1 { font-size: clamp(44px, 5vw, 69px); margin: 20px 0 24px; }
.legal-lead { font-size: 18px; margin-bottom: 55px; }
.legal-page h2 { font-size: 22px; margin: 40px 0 14px; }
.legal-page p:not(.section-label) { max-width: 740px; font-size: 14px; line-height: 1.9; }
.legal-page a:not(.back-link) { color: var(--green); text-decoration: underline; }
.legal-last { margin-top: 50px; padding-top: 21px; border-top: 1px solid var(--border); font-size: 11px !important; }
.thanks-page { min-height: 70vh; display: flex; align-items: center; padding: 110px 0; }
.thanks-inner { width: min(750px, calc(100% - 64px)); margin-inline: auto; }
.thanks-page p:not(.section-label) { font-size: 17px; line-height: 1.8; margin: 0 0 30px; max-width: 530px; }
.thanks-page h1 { margin-bottom: 25px; }

@media (max-width: 1150px) {
  .desktop-nav { gap: 15px; margin-left: 4px; }
  .nav-container { gap: 18px; }
  .nav-actions { gap: 11px; }
  .hero-content { gap: 36px; }
  .hero h1 { font-size: clamp(48px, 5.3vw, 70px); }
  .hero-description { font-size: 15px; }
  .pipeline-flow { padding-inline: 25px; gap: 11px; }
  .pipeline-node { padding: 18px; }
  .pipeline-connector { flex-basis: 25px; }
}

@media (max-width: 930px) {
  .desktop-nav { display: none; }
  .hero-content { grid-template-columns: 1fr; padding-top: 82px; padding-bottom: 65px; }
  .hero h1 { max-width: 840px; font-size: clamp(54px, 8vw, 76px); }
  .hero-description { max-width: 700px; font-size: 16px; }
  .hero-preview { width: min(100%, 690px); }
  .section-header { align-items: start; }
  .pipeline-flow { padding: 30px 22px; }
  .pipeline-node strong { font-size: 16px; }
  .faq-layout { gap: 35px; }
  .contact-layout { gap: 35px; }
  .contact-watermark { font-size: 60px; }
}

@media (max-width: 700px) {
  .container { width: calc(100% - 36px); }
  .nav-container { min-height: 62px; }
  .brand { font-size: 18px; }
  .brand-icon { width: 26px; height: 26px; }
  .nav-cta { display: none; }
  .languages a { font-size: 10px; padding: 5px; }
  .hero-content { padding-top: 64px; gap: 49px; }
  .hero h1 { font-size: clamp(43px, 10vw, 69px); margin-top: 26px; }
  .hero-eyebrow { font-size: 9px; }
  .hero-description { font-size: 15px; }
  .hero-actions { align-items: stretch; }
  .hero-actions .button { width: 100%; justify-content: space-between; }
  .hero-capabilities { gap: 16px 25px; }
  .capability-label { width: 100%; }
  .section { padding: 76px 0; }
  .section-header { display: block; }
  .section-header h2 { font-size: clamp(32px, 8vw, 43px); }
  .section-description { margin-top: 17px; }
  .features-grid, .audience-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 240px; }
  .pipeline-flow { flex-direction: column; }
  .pipeline-node { width: 100%; min-height: 110px; padding: 20px; }
  .pipeline-connector { flex: none; height: 28px; transform: rotate(90deg); }
  .pipeline-top { font-size: 9px; }
  .pipeline-top span:last-child { display: none; }
  .steps-grid { grid-template-columns: 1fr; margin-top: 34px; }
  .step, .step + .step { padding: 22px 0; border-left: 0; border-bottom: 1px solid var(--border); }
  .step:last-child { border-bottom: 0; }
  .step-index { margin-bottom: 12px; }
  .audience-grid article { min-height: 225px; }
  .audience-grid h3 { margin-top: 30px; }
  .pricing-panel { flex-direction: column; align-items: stretch; gap: 25px; }
  .faq-layout, .contact-layout { grid-template-columns: 1fr; }
  .contact-watermark { display: none; }
  .form-panel { padding: 23px; }
  .footer-grid { display: block; }
  .footer-links { margin-top: 32px; }
  .footer-bottom { margin-top: 40px; flex-wrap: wrap; }
  .legal-wrap, .thanks-inner { width: calc(100% - 36px); }
}

@media (max-width: 440px) {
  .hero h1 { font-size: clamp(39px, 10vw, 48px); }
  .hero-eyebrow { font-size: 8px; padding: 7px 10px; }
  .preview-tab { padding: 0 9px; font-size: 10px; }
  .preview-code { font-size: 10.5px; padding-left: 0; }
  .line-no { width: 31px; flex-basis: 31px; padding-right: 8px; }
  .preview-footer-right { display: none; }
  .field-grid { grid-template-columns: 1fr; }
  .form-panel { padding: 20px 16px; }
}

html[lang="zh-Hans"] .hero h1 { letter-spacing: -.035em; font-size: clamp(40px, 5vw, 65px); }
html[lang="zh-Hans"] .hero-description { line-height: 1.9; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}