:root {
  --c-primary: #0284C7;
  --c-primary-strong: #0369A1;
  --c-primary-grad: #38BDF8;
  --c-orange: #FB923C;
  --c-orange-deep: #EA7A1F;

  --c-bg: #F8FAFC;
  --c-surface: #FFFFFF;
  --c-surface-2: rgba(15, 23, 42, .035);
  --c-border: rgba(15, 23, 42, .09);
  --c-border-strong: rgba(15, 23, 42, .16);
  --c-text: rgba(15, 23, 42, .93);
  --c-text-sub: rgba(15, 23, 42, .58);
  --c-text-faint: rgba(15, 23, 42, .40);
  --c-accent-soft: rgba(2, 132, 199, .10);

  --glass: rgba(255, 255, 255, .78);
  --hero-bg-a: #EAF6FE;
  --hero-bg-b: #F8FAFC;
  --hero-glow: rgba(56, 189, 248, .16);
  --path-ink: rgba(2, 132, 199, .45);
  --paper-bg: #FFFFFF;
  --paper-line: #E2E8F0;

  --font-display: "Inter", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;

  --r-sm: 10px; --r-md: 14px; --r-lg: 20px; --r-xl: 28px;
  --sh-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);
  --sh-md: 0 4px 12px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .04);
  --sh-lg: 0 12px 32px rgba(15, 23, 42, .08), 0 4px 12px rgba(15, 23, 42, .05), 0 1px 2px rgba(15, 23, 42, .03);
  --sh-xl: 0 24px 56px rgba(15, 23, 42, .10), 0 8px 24px rgba(15, 23, 42, .06), 0 2px 4px rgba(15, 23, 42, .03);
  --sh-primary: 0 6px 20px rgba(2, 132, 199, .18), 0 2px 6px rgba(2, 132, 199, .10);
  --sh-primary-lg: 0 12px 32px rgba(2, 132, 199, .24), 0 4px 12px rgba(2, 132, 199, .14);
  --sh-orange: 0 8px 24px rgba(251, 146, 60, .30);
}

[data-theme="dark"] {
  --c-primary: #38BDF8;
  --c-primary-strong: #0EA5E9;
  --c-primary-grad: #7DD3FC;
  --c-orange: #FB923C;
  --c-orange-deep: #FDBA74;

  --c-bg: #0B1220;
  --c-surface: #111A2E;
  --c-surface-2: rgba(148, 163, 184, .06);
  --c-border: rgba(148, 163, 184, .12);
  --c-border-strong: rgba(148, 163, 184, .22);
  --c-text: rgba(226, 232, 240, .94);
  --c-text-sub: rgba(148, 163, 184, .75);
  --c-text-faint: rgba(100, 116, 139, .75);
  --c-accent-soft: rgba(56, 189, 248, .14);

  --glass: rgba(13, 20, 36, .78);
  --hero-bg-a: #0E1A30;
  --hero-bg-b: #0B1220;
  --hero-glow: rgba(56, 189, 248, .12);
  --path-ink: rgba(125, 211, 252, .4);

  --sh-sm: 0 1px 3px rgba(0, 0, 0, .30), 0 1px 2px rgba(0, 0, 0, .22);
  --sh-md: 0 4px 12px rgba(0, 0, 0, .32), 0 1px 3px rgba(0, 0, 0, .22);
  --sh-lg: 0 12px 32px rgba(0, 0, 0, .40), 0 4px 12px rgba(0, 0, 0, .26), 0 1px 2px rgba(0, 0, 0, .18);
  --sh-xl: 0 24px 56px rgba(0, 0, 0, .48), 0 8px 24px rgba(0, 0, 0, .32), 0 2px 4px rgba(0, 0, 0, .20);
  --sh-primary: 0 6px 20px rgba(56, 189, 248, .22), 0 2px 6px rgba(56, 189, 248, .12);
  --sh-primary-lg: 0 12px 32px rgba(56, 189, 248, .28), 0 4px 12px rgba(56, 189, 248, .16);
  --sh-orange: 0 8px 24px rgba(251, 146, 60, .24);
}

* { box-sizing: border-box; }
html { scroll-padding-top: 84px; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--c-text);
  background: var(--c-bg);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
h1, h2, h3, p, ul, ol { margin: 0; }
img { display: block; }
a { color: inherit; }
:focus-visible { outline: 2.5px solid var(--c-primary); outline-offset: 3px; border-radius: 6px; }

.skip-link {
  position: fixed; top: -48px; left: 16px; z-index: 200;
  background: var(--c-primary); color: #fff;
  padding: 10px 16px; border-radius: 0 0 12px 12px;
  font-size: 14px; text-decoration: none; transition: top .2s ease;
}
.skip-link:focus-visible { top: 0; }

.lnav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.lnav.scrolled {
  background: var(--glass);
  border-bottom-color: var(--c-border);
  box-shadow: var(--sh-sm);
}
.lnav-inner {
  max-width: 1180px; margin: 0 auto; padding: 0 24px;
  height: 68px; display: flex; align-items: center; gap: 28px;
}
.lnav-brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; flex: none;
}
.lnav-mark { width: 34px; height: 34px; transition: transform .35s cubic-bezier(.34, 1.56, .64, 1); }
.lnav-brand:hover .lnav-mark { transform: rotate(-8deg) scale(1.06); }
.lnav-mark svg { width: 100%; height: 100%; display: block; }
.lnav-name {
  font-family: var(--font-display); font-size: 18px; font-weight: 800;
  letter-spacing: -.4px; white-space: nowrap; display: inline-flex; align-items: center;
  background: linear-gradient(120deg, #0284C7 10%, #0EA5E9 55%, #38BDF8 90%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
[data-theme="dark"] .lnav-name { background: linear-gradient(120deg, #7DD3FC 10%, #38BDF8 60%, #0EA5E9 90%); -webkit-background-clip: text; background-clip: text; }
.lnav-name em { font-style: normal; }
.lnav-div { width: 1px; height: 14px; background: var(--c-border-strong); margin: 0 10px; }
.lnav-name b { font-weight: 700; font-size: 15px; }

.lnav-links { display: flex; gap: 4px; margin-left: auto; }
.lnav-links a {
  font-size: 14.5px; color: var(--c-text-sub); text-decoration: none;
  padding: 8px 14px; border-radius: 999px; font-weight: 500;
  transition: color .18s ease, background .18s ease;
}
.lnav-links a:hover { color: var(--c-primary); background: var(--c-accent-soft); }
.lnav-links a.active { color: var(--c-primary); background: var(--c-accent-soft); }

.lnav-actions { display: flex; align-items: center; gap: 12px; flex: none; }
.theme-btn {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--c-border); background: var(--c-surface);
  color: var(--c-text-sub); display: grid; place-items: center;
  box-shadow: var(--sh-sm); cursor: pointer;
  transition: color .18s ease, border-color .18s ease, transform .18s ease;
}
.theme-btn:hover { color: var(--c-primary); border-color: var(--c-primary); transform: translateY(-1px); }
.theme-btn svg { width: 18px; height: 18px; }
.theme-btn .ic-moon { display: none; }
[data-theme="dark"] .theme-btn .ic-sun { display: none; }
[data-theme="dark"] .theme-btn .ic-moon { display: block; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 9px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-strong));
  color: #fff; text-decoration: none; border: 0; cursor: pointer;
  font-family: var(--font-body); font-weight: 700; letter-spacing: .2px;
  padding: 13px 26px; border-radius: 999px; font-size: 15.5px;
  box-shadow: var(--sh-primary);
  transition: transform .18s cubic-bezier(.34, 1.56, .64, 1), box-shadow .18s ease, filter .18s ease;
}
.btn-primary svg { width: 17px; height: 17px; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--sh-primary-lg); filter: saturate(1.08); }
.btn-primary:active { transform: translateY(0) scale(.98); }
.btn-primary.sm { padding: 9px 18px; font-size: 14px; }
.btn-primary.lg { padding: 16px 34px; font-size: 17px; box-shadow: var(--sh-primary-lg); }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--c-text-sub); text-decoration: none; font-weight: 600; font-size: 15px;
  padding: 14px 22px; border-radius: 999px;
  border: 1.5px solid var(--c-border-strong); background: var(--c-surface);
  transition: color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn-ghost svg { width: 15px; height: 15px; }
.btn-ghost:hover { color: var(--c-primary); border-color: var(--c-primary); transform: translateY(-2px); }

.hero {
  position: relative;
  padding: 158px 24px 96px;
  background:
    radial-gradient(ellipse 900px 480px at 78% -8%, var(--hero-glow), transparent 62%),
    linear-gradient(180deg, var(--hero-bg-a) 0%, var(--hero-bg-b) 82%);
  overflow: hidden;
}
.hero-sky { position: absolute; inset: 0; pointer-events: none; }
.cloud {
  position: absolute; border-radius: 999px;
  background: rgba(255, 255, 255, .75);
  filter: blur(2px); opacity: .85;
}
[data-theme="dark"] .cloud { background: rgba(148, 163, 184, .10); }
.cloud.c1 { width: 190px; height: 44px; top: 16%; left: 4%; animation: drift 34s linear infinite; }
.cloud.c2 { width: 130px; height: 32px; top: 62%; left: 44%; opacity: .55; animation: drift 46s linear infinite reverse; }
.cloud.c3 { width: 230px; height: 52px; top: 30%; right: -60px; opacity: .6; animation: drift 40s linear infinite; }
@keyframes drift {
  0% { transform: translateX(-40px); }
  50% { transform: translateX(60px); }
  100% { transform: translateX(-40px); }
}
.flight-path {
  position: absolute; right: 2%; top: 90px; width: 560px; height: 320px;
  color: var(--path-ink); opacity: .9;
}

.hero-inner {
  position: relative; z-index: 1;
  max-width: 1180px; margin: 0 auto;
  display: grid; grid-template-columns: 1.02fr .98fr; gap: 56px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13.5px; font-weight: 600; color: var(--c-primary-strong);
  background: var(--c-accent-soft); border: 1px solid var(--c-border);
  padding: 7px 16px; border-radius: 999px; margin-bottom: 26px;
}
[data-theme="dark"] .hero-badge { color: var(--c-primary-grad); }
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-orange); box-shadow: 0 0 0 4px rgba(251, 146, 60, .18); animation: pulse 2.2s ease infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 7px rgba(251, 146, 60, .06); } }

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.14; letter-spacing: -.02em; font-weight: 800;
}
.hero h1 .grad {
  background: linear-gradient(115deg, #0284C7 5%, #0EA5E9 45%, #38BDF8 80%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
[data-theme="dark"] .hero h1 .grad { background: linear-gradient(115deg, #7DD3FC 5%, #38BDF8 55%, #0EA5E9 90%); -webkit-background-clip: text; background-clip: text; }
.hero-sub {
  margin-top: 22px; font-size: 17.5px; color: var(--c-text-sub); max-width: 34em;
}
.hero-sub strong { color: var(--c-orange-deep); font-weight: 700; }
[data-theme="dark"] .hero-sub strong { color: var(--c-orange); }

.hero-ctas { display: flex; align-items: center; gap: 16px; margin-top: 34px; flex-wrap: wrap; }
.hero-meta {
  display: flex; gap: 26px; flex-wrap: wrap;
  list-style: none; padding: 0; margin: 30px 0 0;
}
.hero-meta li {
  position: relative; padding-left: 24px;
  font-size: 13.5px; color: var(--c-text-faint); font-weight: 500;
}
.hero-meta li::before {
  content: ""; position: absolute; left: 0; top: 3px;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--c-accent-soft) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%230284C7" stroke-width="3.4" stroke-linecap="round" stroke-linejoin="round"><path d="m5 12.5 4.5 4.5L19 7.5"/></svg>') center/9px no-repeat;
}
[data-theme="dark"] .hero-meta li::before { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%2338BDF8" stroke-width="3.4" stroke-linecap="round" stroke-linejoin="round"><path d="m5 12.5 4.5 4.5L19 7.5"/></svg>'); }

.hero-visual { position: relative; }
.mock {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-xl);
  overflow: hidden;
  animation: bob 7s ease-in-out infinite;
}
@keyframes bob { 50% { transform: translateY(-10px); } }
.mock-bar {
  display: flex; align-items: center; gap: 6px;
  padding: 11px 14px; border-bottom: 1px solid var(--c-border);
  background: var(--c-surface-2);
}
.mock-bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--c-border-strong); }
.mock-bar i:nth-child(1) { background: #FDA4AF; }
.mock-bar i:nth-child(2) { background: #FCD34D; }
.mock-bar i:nth-child(3) { background: #6EE7B7; }
.mock-bar span { margin-left: 8px; font-size: 11px; color: var(--c-text-faint); letter-spacing: .04em; }

.mock-cols {
  display: grid; grid-template-columns: .92fr 1.06fr 1fr; gap: 12px;
  padding: 14px; min-height: 316px;
}
.m-label { font-size: 10.5px; font-weight: 700; letter-spacing: .08em; color: var(--c-text-faint); display: block; margin-bottom: 8px; }

.mock-edit .m-card {
  display: flex; align-items: center; gap: 7px;
  font-size: 11.5px; font-weight: 600; color: var(--c-text-sub);
  border: 1px solid var(--c-border); border-radius: 9px;
  padding: 8px 10px; margin-bottom: 7px; background: var(--c-surface);
}
.mock-edit .m-card.on {
  color: var(--c-primary); border-color: var(--c-primary);
  background: var(--c-accent-soft); box-shadow: var(--sh-sm);
}
.m-ico { width: 7px; height: 7px; border-radius: 2px; background: currentColor; opacity: .55; flex: none; }

.mock-paper { text-align: center; }
.mock-paper .m-label { text-align: left; }
.paper {
  width: 100%; max-width: 178px; margin: 0 auto;
  background: var(--paper-bg); border-radius: 6px;
  box-shadow: 0 0 0 1px rgba(15, 23, 42, .06), 0 10px 24px rgba(15, 23, 42, .10);
  padding: 16px 14px; text-align: left;
}
.p-name { height: 9px; width: 46%; border-radius: 4px; background: #0F172A; opacity: .82; margin: 0 auto 6px; }
.p-line { height: 5px; border-radius: 3px; background: var(--paper-line); margin: 7px 0; }
.p-line.w40 { width: 40%; margin: 0 auto 10px; }
.p-line.w90 { width: 90%; } .p-line.w85 { width: 85%; } .p-line.w70 { width: 70%; } .p-line.w60 { width: 60%; }
.p-line.hl { background: linear-gradient(90deg, rgba(56, 189, 248, .55), rgba(2, 132, 199, .45)); animation: hlg 2.6s ease infinite; }
@keyframes hlg { 50% { filter: brightness(1.25); } }
.p-sec { height: 6px; width: 30%; border-radius: 3px; background: #0F172A; opacity: .5; margin-top: 14px; }

.mock-chat .m-msg {
  font-size: 11px; line-height: 1.5; padding: 8px 10px;
  border-radius: 10px; margin-bottom: 7px; max-width: 92%;
}
.mock-chat .m-msg.ai { background: var(--c-accent-soft); color: var(--c-primary-strong); border-top-left-radius: 3px; }
[data-theme="dark"] .mock-chat .m-msg.ai { color: #7DD3FC; }
.mock-chat .m-msg.me { background: var(--c-surface-2); color: var(--c-text-sub); margin-left: auto; border-top-right-radius: 3px; text-align: right; }
.mock-chat .m-act {
  display: inline-block; font-size: 10.5px; font-weight: 700;
  color: var(--c-orange-deep); border: 1.5px dashed var(--c-orange);
  border-radius: 999px; padding: 5px 11px; margin: 2px 0 8px 6px;
  animation: act-glow 2.4s ease infinite;
}
[data-theme="dark"] .mock-chat .m-act { color: var(--c-orange); }
@keyframes act-glow { 50% { box-shadow: 0 0 0 5px rgba(251, 146, 60, .12); } }
.m-msg.typing { display: inline-flex; gap: 4px; padding: 10px 12px; }
.m-msg.typing i { width: 5px; height: 5px; border-radius: 50%; background: var(--c-primary); opacity: .4; animation: typ 1.1s ease infinite; }
.m-msg.typing i:nth-child(2) { animation-delay: .18s; }
.m-msg.typing i:nth-child(3) { animation-delay: .36s; }
@keyframes typ { 50% { transform: translateY(-3px); opacity: .9; } }

.hero-plane {
  position: absolute; right: -14px; top: -30px; z-index: 2;
  width: 74px; height: 74px; border: 0; padding: 0; cursor: pointer;
  background: transparent; border-radius: 50%;
  animation: plane-hover 4.2s ease-in-out infinite;
  transition: transform .25s cubic-bezier(.34, 1.56, .64, 1);
}
.hero-plane:hover { transform: scale(1.12) rotate(-6deg); }
.hero-plane svg { width: 100%; height: 100%; filter: drop-shadow(0 10px 18px rgba(2, 132, 199, .30)); }
@keyframes plane-hover { 50% { transform: translateY(-9px) rotate(3deg); } }
.plane-tip {
  position: absolute; right: 78px; top: 16px; white-space: nowrap;
  font-size: 12px; font-weight: 700; color: var(--c-orange-deep);
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: 999px; padding: 5px 12px; box-shadow: var(--sh-sm);
  opacity: 0; transform: translateX(6px);
  transition: opacity .2s ease, transform .2s ease; pointer-events: none;
}
[data-theme="dark"] .plane-tip { color: var(--c-orange); }
.hero-plane:hover .plane-tip, .hero-plane:focus-visible .plane-tip { opacity: 1; transform: none; }

.section { max-width: 1180px; margin: 0 auto; padding: 88px 24px 30px; }
.section.alt {
  max-width: none;
  background:
    radial-gradient(ellipse 800px 400px at 50% 0%, var(--hero-glow), transparent 60%),
    var(--c-surface-2);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  padding-bottom: 88px;
}
.section.alt > * { max-width: 1180px; margin-left: auto; margin-right: auto; }
.section.alt .section-head { max-width: 660px; }
.section.alt .faq-wrap { max-width: 760px; }
.section-head { max-width: 660px; margin-bottom: 52px; }
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.8vw, 48px); line-height: 1.14; letter-spacing: -.015em; font-weight: 800;
}
.section-sub { margin-top: 14px; font-size: 16.5px; color: var(--c-text-sub); }

.section-head { text-align: center; margin-left: auto; margin-right: auto; max-width: 780px; }
.kicker {
  font-size: 15px; font-weight: 700; letter-spacing: .05em;
  color: var(--c-orange-deep); margin-bottom: 14px;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
[data-theme="dark"] .kicker { color: var(--c-orange); }

.feature-a {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
  padding: 44px 0;
}
.feature-a + .feature-a { border-top: 1px dashed var(--c-border); }
.feature-a.flip .fa-visual { order: 2; }
.feature-a.flip .fa-copy { order: 1; }
.fa-copy h3 {
  font-family: var(--font-display); font-size: 24px; font-weight: 800; letter-spacing: -.01em;
  margin-bottom: 14px; line-height: 1.3;
}
.fa-copy h3 em { font-style: normal; color: var(--c-orange-deep); }
[data-theme="dark"] .fa-copy h3 em { color: var(--c-orange); }
.fa-copy p { color: var(--c-text-sub); font-size: 15.5px; }

.tri {
  position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
  padding: 30px 6px 10px;
}
.tri-col {
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--r-md); box-shadow: var(--sh-md);
  padding: 18px 14px 16px; min-height: 128px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.tri-col b { display: block; font-size: 13.5px; font-weight: 800; margin-bottom: 8px; }
.tri-col span { font-size: 11.5px; color: var(--c-text-faint); line-height: 1.6; display: block; }
.tri-col.edit b { color: var(--c-primary); }
.tri-col.view b { color: var(--c-orange-deep); }
.tri-col.ai b { color: #0891B2; }
[data-theme="dark"] .tri-col.view b { color: var(--c-orange); }
[data-theme="dark"] .tri-col.ai b { color: #22D3EE; }
.tri-col:hover { transform: translateY(-5px); box-shadow: var(--sh-lg); }
.tri-link {
  position: absolute; height: 2px; border-radius: 2px;
  background: repeating-linear-gradient(90deg, var(--path-ink) 0 6px, transparent 6px 12px);
}
.tri-link.l1 { left: 30%; right: 66%; top: 42%; transform: rotate(24deg); }
.tri-link.l2 { left: 64%; right: 30%; top: 42%; transform: rotate(-24deg); }

.adopt { display: flex; flex-direction: column; gap: 0; padding: 6px 0; }
.adopt-chat { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.ac-bubble {
  background: var(--c-accent-soft); color: var(--c-primary-strong);
  font-size: 13px; padding: 10px 14px; border-radius: 12px 12px 12px 3px;
  max-width: 88%;
}
[data-theme="dark"] .ac-bubble { color: #7DD3FC; }
.ac-action {
  font-size: 12px; font-weight: 800; color: var(--c-orange-deep);
  background: rgba(251, 146, 60, .10); border: 1.5px solid var(--c-orange);
  border-radius: 999px; padding: 7px 14px;
  animation: act-glow 2.4s ease infinite;
}
[data-theme="dark"] .ac-action { color: var(--c-orange); }
.adopt-arrow {
  width: 2px; height: 26px; margin-left: 34px;
  background: linear-gradient(180deg, var(--c-orange), transparent);
  position: relative;
}
.adopt-arrow::after {
  content: ""; position: absolute; left: -4px; bottom: 0;
  border: 5px solid transparent; border-top-color: var(--c-orange);
}
.adopt-resume {
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--r-md); box-shadow: var(--sh-md); padding: 16px 18px;
}
.adopt-resume b { font-size: 13px; color: var(--c-text-sub); }
.adopt-resume .old {
  font-size: 13px; color: var(--c-text-faint); text-decoration: line-through;
  text-decoration-color: rgba(248, 113, 113, .6); margin-top: 8px;
}
.adopt-resume .new {
  font-size: 13.5px; color: var(--c-text); margin-top: 6px;
  background: linear-gradient(90deg, rgba(56, 189, 248, .14), transparent 70%);
  border-left: 3px solid var(--c-primary-grad);
  padding: 8px 10px; border-radius: 0 8px 8px 0;
}

.feat-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
  padding-top: 20px;
}
.feat-card {
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--r-lg); box-shadow: var(--sh-md);
  padding: 28px 26px; position: relative; overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.feat-card::after {
  content: ""; position: absolute; inset: auto -30% -55% auto;
  width: 200px; height: 200px; border-radius: 50%;
  background: radial-gradient(circle, var(--hero-glow), transparent 70%);
  opacity: 0; transition: opacity .3s ease; pointer-events: none;
}
.feat-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); border-color: rgba(2, 132, 199, .35); }
.feat-card:hover::after { opacity: 1; }
.feat-ico {
  width: 46px; height: 46px; border-radius: 14px;
  background: var(--c-accent-soft); color: var(--c-primary);
  display: grid; place-items: center; margin-bottom: 18px;
}
[data-theme="dark"] .feat-ico { color: #38BDF8; }
.feat-ico svg { width: 24px; height: 24px; }
.feat-card h3 { font-family: var(--font-display); font-size: 17.5px; font-weight: 800; margin-bottom: 10px; }
.feat-card p { font-size: 14px; color: var(--c-text-sub); }

.steps {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px;
  counter-reset: step;
  position: relative;
}
.step {
  position: relative; background: var(--c-surface);
  border: 1px solid var(--c-border); border-radius: var(--r-lg);
  box-shadow: var(--sh-md); padding: 30px 26px 26px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.step:hover { transform: translateY(-5px); box-shadow: var(--sh-lg); }
.step-num {
  width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 800; font-size: 18px;
  color: #fff; background: linear-gradient(135deg, var(--c-primary), var(--c-primary-strong));
  box-shadow: var(--sh-primary); margin-bottom: 18px;
}
.step:nth-child(2) .step-num { background: linear-gradient(135deg, #38BDF8, #0284C7); }
.step:nth-child(3) .step-num { background: linear-gradient(135deg, var(--c-orange), var(--c-orange-deep)); box-shadow: var(--sh-orange); }
.step h3 { font-family: var(--font-display); font-size: 17.5px; font-weight: 800; margin-bottom: 10px; }
.step p { font-size: 14px; color: var(--c-text-sub); }

.sec-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.sec-card {
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--r-md); box-shadow: var(--sh-sm); padding: 22px 20px;
  transition: transform .22s ease, box-shadow .22s ease;
}
.sec-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.sec-ico {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--c-accent-soft); color: var(--c-primary);
  display: grid; place-items: center; margin-bottom: 14px;
}
[data-theme="dark"] .sec-ico { color: #38BDF8; }
.sec-ico svg { width: 21px; height: 21px; }
.sec-card h3 { font-size: 15px; font-weight: 800; margin-bottom: 8px; }
.sec-card p { font-size: 13px; color: var(--c-text-sub); }
.sec-note {
  margin-top: 26px; font-size: 13px; color: var(--c-text-faint);
  text-align: center;
}

.faq-wrap { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--r-md); box-shadow: var(--sh-sm);
  overflow: hidden; transition: border-color .2s ease;
}
.faq-item[open] { border-color: rgba(2, 132, 199, .4); }
.faq-item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 22px; font-size: 15.5px; font-weight: 700;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-plus {
  flex: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--c-accent-soft); position: relative;
  transition: transform .25s cubic-bezier(.34, 1.56, .64, 1);
}
.faq-plus::before, .faq-plus::after {
  content: ""; position: absolute; inset: 0; margin: auto;
  background: var(--c-primary); border-radius: 2px;
}
.faq-plus::before { width: 10px; height: 2px; }
.faq-plus::after { width: 2px; height: 10px; }
.faq-item[open] .faq-plus { transform: rotate(135deg); }
.faq-item > p { padding: 0 20px 18px; font-size: 14px; color: var(--c-text-sub); }

.cta-banner {
  display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  background: linear-gradient(115deg, rgba(2, 132, 199, .10), rgba(56, 189, 248, .07));
  border: 1px solid var(--c-border); border-radius: var(--r-lg);
  padding: 18px 26px;
}
.cta-banner p { font-size: 15.5px; font-weight: 600; color: var(--c-text-sub); }

.lfoot { border-top: 1px solid var(--c-border); background: var(--c-surface-2); }
.lfoot-inner {
  max-width: 1180px; margin: 0 auto; padding: 34px 24px;
  display: flex; align-items: center; gap: 28px; flex-wrap: wrap;
}
.lfoot-brand p { font-size: 12.5px; color: var(--c-text-faint); margin-top: 6px; }
.lfoot-copy { margin-left: auto; font-size: 12.5px; color: var(--c-text-faint); }

.launch {
  position: fixed; inset: 0; z-index: 300;
  background: linear-gradient(180deg, #BAE6FD 0%, #7DD3FC 38%, #0284C7 100%);
  opacity: 0; transition: opacity .28s ease;
  overflow: hidden;
}
[data-theme="dark"] .launch { background: linear-gradient(180deg, #16233C 0%, #0B1220 70%, #060B14 100%); }
.launch.go { opacity: 1; }
.launch-plane {
  position: absolute; left: 8%; bottom: -10%;
  width: 120px; height: 120px;
  filter: drop-shadow(0 18px 30px rgba(2, 60, 99, .35));
  animation: launch-fly 1.05s cubic-bezier(.55, .06, .68, .19) forwards;
}
@keyframes launch-fly {
  0% { transform: translate(0, 0) rotate(8deg) scale(.72); opacity: .2; }
  22% { opacity: 1; }
  100% { transform: translate(86vw, -78vh) rotate(-16deg) scale(1.05); opacity: 1; }
}
.launch-trail {
  position: absolute; left: 10%; bottom: 4%;
  width: 46vw; height: 3px; border-radius: 3px;
  background: repeating-linear-gradient(90deg, rgba(255, 255, 255, .85) 0 10px, transparent 10px 20px);
  transform-origin: left center; transform: rotate(-38deg);
  animation: trail-draw 1.05s ease forwards; opacity: 0;
}
@keyframes trail-draw { 0% { opacity: 0; clip-path: inset(0 100% 0 0); } 25% { opacity: .8; } 100% { opacity: 0; clip-path: inset(0 0 0 0); } }
.launch-cloud {
  position: absolute; border-radius: 999px; background: rgba(255, 255, 255, .5); filter: blur(3px);
  animation: launch-cloud-move 1.1s ease-in forwards;
}
.launch-cloud.k1 { width: 220px; height: 54px; left: -10%; bottom: 18%; }
.launch-cloud.k2 { width: 160px; height: 40px; left: 30%; bottom: 34%; animation-delay: .1s; }
.launch-cloud.k3 { width: 260px; height: 60px; left: 58%; bottom: 12%; animation-delay: .05s; }
@keyframes launch-cloud-move { to { transform: translateX(-46vw); opacity: 0; } }
.launch-tip {
  position: absolute; left: 50%; bottom: 12vh; transform: translateX(-50%);
  color: #fff; font-size: 14.5px; font-weight: 700; letter-spacing: .3em; text-indent: .3em;
  animation: tip-pulse 1s ease infinite;
}
@keyframes tip-pulse { 50% { opacity: .55; } }

.js-reveal .reveal { opacity: 0; transform: translateY(30px) scale(.98); }
.js-reveal .reveal.in {
  opacity: 1; transform: none;
  transition: opacity .7s ease, transform .85s cubic-bezier(.16, 1, .3, 1);
}

@media (max-width: 1080px) {
  .lnav-links { display: none; }
  .hero { padding: 128px 24px 72px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-copy { max-width: 620px; }
  .flight-path { width: 380px; height: 220px; top: 60px; right: -4%; }
  .hero-plane { right: 4px; top: -26px; }
  .feature-a { grid-template-columns: 1fr; gap: 30px; padding: 38px 0; }
  .feature-a.flip .fa-visual { order: 1; }
  .feature-a.flip .fa-copy { order: 2; }
  .feat-grid { grid-template-columns: 1fr 1fr; }
  .sec-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; gap: 18px; }
}
@media (max-width: 640px) {
  body { font-size: 15px; }
  .hero { padding: 116px 18px 60px; }
  .hero-inner { gap: 40px; }
  .hero h1 { font-size: clamp(30px, 8.4vw, 40px); }
  .hero-sub { font-size: 16px; }
  .hero-ctas .btn-primary.lg { width: 100%; justify-content: center; }
  .hero-ctas .btn-ghost { flex: 1; justify-content: center; }
  .hero-meta { gap: 14px 20px; }
  .mock-cols { grid-template-columns: 1fr; min-height: 0; }
  .mock-edit, .mock-chat { display: none; }
  .mock-paper { display: block; }
  .paper { max-width: 210px; padding-bottom: 22px; }
  .hero-plane { width: 60px; height: 60px; right: 0; top: -22px; }
  .plane-tip { right: 64px; }
  .hero-strip { margin-top: 22px; }
  .chip-logo img { width: 42px; height: 42px; padding: 8px; border-radius: 12px; }
  .chip-logo i { font-size: 10.5px; }
  .strip-row { gap: 12px; }
  .bento { grid-template-columns: 1fr; }
  .bento-card.big { grid-column: span 1; }
  .steps.compact { grid-template-columns: 1fr; gap: 12px; }
  .cta-banner { flex-direction: column; align-items: flex-start; }
  .section { padding: 64px 18px 20px; }
  .section-head { margin-bottom: 36px; }
  .feat-grid { grid-template-columns: 1fr; }
  .sec-grid { grid-template-columns: 1fr; }
  .lnav-inner { padding: 0 16px; height: 62px; gap: 14px; }
  .lnav-actions .btn-primary.sm { padding: 8px 14px; font-size: 13px; }
  .lnav-name b { display: none; }
  .lnav-div { display: none; }
  .faq-item summary { padding: 15px 16px; font-size: 14.5px; }
  .faq-item > p { padding: 0 16px 16px; }
  .lfoot-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
  .lfoot-copy { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .08s !important;
  }
  html { scroll-behavior: auto; }
  .js-reveal .reveal { opacity: 1; transform: none; }
  .launch { display: none; }
}

.scroll-hint {
  position: absolute; right: 26px; bottom: 20px;
  display: inline-flex; flex-direction: row; align-items: center; gap: 8px;
  background: transparent; border: 0; padding: 6px 12px; cursor: pointer; z-index: 2;
  color: var(--c-text-faint); font-size: 12px; font-weight: 600; letter-spacing: .1em;
  transition: color .2s ease;
}
.scroll-hint svg { width: 20px; height: 20px; animation: hint-bob 1.8s ease infinite; }
.scroll-hint:hover { color: var(--c-primary); }
@keyframes hint-bob { 50% { transform: translateY(5px); } }

.snap-nav {
  position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%);
  z-index: 90; display: none; flex-direction: row; gap: 12px;
  background: var(--glass); border: 1px solid var(--c-border);
  border-radius: 999px; padding: 10px 15px; box-shadow: var(--sh-md);
  backdrop-filter: blur(10px) saturate(1.3);
  -webkit-backdrop-filter: blur(10px) saturate(1.3);
}
.snap-nav button {
  width: 10px; height: 10px; border-radius: 50%; padding: 0;
  border: 1.5px solid var(--c-border-strong); background: transparent; cursor: pointer;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.snap-nav button:hover { border-color: var(--c-primary); }
.snap-nav button.on { background: var(--c-primary); border-color: var(--c-primary); transform: scale(1.3); }

@media (min-width: 901px) and (min-height: 700px) and (prefers-reduced-motion: no-preference) {
  .hsnap {
    height: 100vh; height: 100svh;
    display: flex; align-items: stretch;
    overflow-x: auto; overflow-y: hidden;
    scroll-snap-type: x mandatory;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
  }
  .hsnap::-webkit-scrollbar { display: none; }
  .hsnap { cursor: grab; }
  .hsnap.dragging { cursor: grabbing; user-select: none; -webkit-user-select: none; }
  .hsnap.dragging a, .hsnap.dragging button { pointer-events: none; }
  .hpanel {
    flex: 0 0 100%; height: 100%;
    scroll-snap-align: start; scroll-snap-stop: always;
    position: relative;
    overflow-x: hidden; overflow-y: auto;
    scrollbar-width: none;
    display: flex; flex-direction: column;
  }
  .hpanel::-webkit-scrollbar { display: none; }

  .hpanel .hero {
    flex: 1 1 auto; height: auto;
    display: flex; flex-direction: column; justify-content: center; gap: 16px;
    padding: 104px 24px 66px;
  }
  #top .hero-inner { gap: 44px; }
  .hero-strip { margin-top: 0; }

  #s2 { max-width: none; margin: 0; justify-content: center; gap: 22px; padding: clamp(50px, 6.5vh, 80px) 24px; }
  #s2 .section-head { margin-bottom: 0; }
  #s2 .bento { margin-bottom: 0; }

  #s3 { padding: 0; }
  #s3 .s3-body { flex: 1 1 auto; justify-content: center; padding: clamp(44px, 6vh, 72px) 24px 16px; gap: 20px; }
  #s3 .lfoot { margin-top: auto; }
}

.grad-sky {
  background: linear-gradient(100deg, #0284C7, #0EA5E9 45%, #38BDF8 85%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}

.hero-visual::before {
  content: ""; position: absolute; inset: -10% -8%; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 68% 58% at 50% 46%, rgba(56, 189, 248, .26), transparent 66%);
  filter: blur(8px);
}
.hero-visual .mock { position: relative; z-index: 1; box-shadow: var(--sh-xl), 0 0 90px rgba(56, 189, 248, .20); }
@keyframes rise { from { opacity: 0; transform: translateY(28px); } }
.hero-copy > *, .hero-visual { animation: rise .9s cubic-bezier(.16, 1, .3, 1) backwards; }
.hero-copy > *:nth-child(1) { animation-delay: .05s; }
.hero-copy > *:nth-child(2) { animation-delay: .14s; }
.hero-copy > *:nth-child(3) { animation-delay: .23s; }
.hero-copy > *:nth-child(4) { animation-delay: .34s; }
.hero-copy > *:nth-child(5) { animation-delay: .45s; }
.hero-visual { animation-delay: .3s; animation-duration: 1s; }

.js-reveal .feat-grid .reveal.in:nth-child(2),
.js-reveal .sec-grid .reveal.in:nth-child(2),
.js-reveal .steps .reveal.in:nth-child(2),
.js-reveal .faq-wrap .reveal.in:nth-child(2) { transition-delay: .09s; }
.js-reveal .feat-grid .reveal.in:nth-child(3),
.js-reveal .sec-grid .reveal.in:nth-child(3),
.js-reveal .steps .reveal.in:nth-child(3),
.js-reveal .faq-wrap .reveal.in:nth-child(3) { transition-delay: .18s; }
.js-reveal .sec-grid .reveal.in:nth-child(4),
.js-reveal .faq-wrap .reveal.in:nth-child(4) { transition-delay: .27s; }

.btn-primary { box-shadow: var(--sh-primary), inset 0 1px 0 rgba(255, 255, 255, .28); }
.btn-primary.lg { box-shadow: var(--sh-primary-lg), inset 0 1px 0 rgba(255, 255, 255, .28); }

.hero-strip { display: flex; flex-direction: column; align-items: center; gap: 12px; margin-top: 34px; }
.strip-label { font-size: 13.5px; color: var(--c-text-faint); font-weight: 500; }
.strip-label strong { color: var(--c-text-sub); font-weight: 700; }
.strip-row { display: flex; justify-content: center; align-items: center; gap: clamp(14px, 2.6vw, 30px); flex-wrap: wrap; }
.chip-logo { display: flex; flex-direction: column; align-items: center; gap: 7px; }
.chip-logo img {
  width: 48px; height: 48px; padding: 9px; object-fit: contain;
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: 14px;
  box-shadow: var(--sh-sm);
  pointer-events: none;
  transition: transform .25s cubic-bezier(.34, 1.56, .64, 1), box-shadow .25s ease, border-color .25s ease;
}
.chip-logo i { font-style: normal; font-size: 11.5px; font-weight: 600; color: var(--c-text-faint); transition: color .2s ease; }
.chip-logo:hover img {
  transform: translateY(-4px) scale(1.18);
  border-color: rgba(2, 132, 199, .45);
  box-shadow: var(--sh-md), 0 10px 26px rgba(2, 132, 199, .22);
}
.chip-logo:hover i { color: var(--c-text-sub); }

.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; max-width: 1120px; margin: 0 auto 26px; }
.bento-card {
  grid-column: span 2;
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--r-lg); box-shadow: var(--sh-md); padding: 20px 22px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.bento-card:hover { transform: translateY(-4px); box-shadow: var(--sh-lg); border-color: rgba(2, 132, 199, .35); }
.bento-card.big { grid-column: span 3; padding: 24px 26px; }
.bento-card h3 { font-family: var(--font-display); font-size: 17px; font-weight: 800; margin-bottom: 8px; letter-spacing: -.01em; }
.bento-card.big h3 { font-size: 19px; }
.bento-card h3 em { font-style: normal; color: var(--c-orange-deep); }
.bento-card p { font-size: 13.5px; color: var(--c-text-sub); }
.bento-card .feat-ico { width: 40px; height: 40px; border-radius: 12px; margin-bottom: 12px; }
.bento-card .feat-ico svg { width: 21px; height: 21px; }

.mini-tri { display: flex; gap: 8px; margin-top: 14px; }
.mini-tri span {
  flex: 1; text-align: center; font-size: 12px; font-weight: 700;
  padding: 8px 4px; border-radius: 9px;
  background: var(--c-accent-soft); color: var(--c-primary);
  border: 1.5px dashed rgba(2, 132, 199, .35);
}
.mini-tri span:nth-child(2) { color: var(--c-orange-deep); background: rgba(251, 146, 60, .08); border-color: rgba(251, 146, 60, .4); }
.mini-tri span:nth-child(3) { color: #0891B2; background: rgba(34, 211, 238, .08); border-color: rgba(34, 211, 238, .35); }
.mini-adopt { margin-top: 14px; display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.bento-card .ac-bubble { font-size: 12.5px; padding: 8px 12px; }
.bento-card .ac-action { font-size: 11.5px; padding: 6px 12px; }

.mini-label { text-align: center; font-size: 13px; font-weight: 700; letter-spacing: .14em; color: var(--c-text-faint); margin: 26px auto 14px; }
.steps.compact { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 1020px; margin: 0 auto; }
.steps.compact .step {
  display: flex; gap: 12px; align-items: flex-start;
  background: transparent; border: 0; box-shadow: none; padding: 0;
}
.steps.compact .step:hover { transform: none; box-shadow: none; }
.steps.compact .step-num { width: 30px; height: 30px; font-size: 14px; margin: 0; flex: none; }
.steps.compact h3 { font-size: 15px; margin-bottom: 4px; }
.steps.compact p { font-size: 13px; }

.s3-body {
  width: 100%; max-width: 1120px; margin: 0 auto;
  padding: 88px 24px 48px;
  display: flex; flex-direction: column; gap: 26px;
}
.s3-body .section-head { margin-bottom: 0; }
.s3-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; width: 100%; }
.s3-col { display: flex; flex-direction: column; gap: 10px; }
.col-label {
  font-size: 13px; font-weight: 800; letter-spacing: .12em;
  color: var(--c-text-sub); display: flex; align-items: center; gap: 8px;
}
.col-label::before { content: ""; width: 6px; height: 6px; border-radius: 2px; background: var(--c-orange); }
.sec-list { display: flex; flex-direction: column; gap: 10px; }
.s3-body .sec-card {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: 12px; padding: 12px 14px; box-shadow: var(--sh-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.s3-body .sec-card:hover { transform: translateY(-2px); border-color: rgba(2, 132, 199, .35); box-shadow: var(--sh-md); }
.s3-body .sec-card .sec-ico { width: 34px; height: 34px; border-radius: 10px; margin: 0; flex: none; }
.s3-body .sec-card .sec-ico svg { width: 18px; height: 18px; }
.s3-body .sec-card h3 { font-size: 14px; margin-bottom: 3px; }
.s3-body .sec-card p { font-size: 12.5px; }
.s3-body .faq-wrap { width: 100%; gap: 10px; }
.s3-body .faq-item summary { padding: 13px 16px; font-size: 14px; }
.s3-body .faq-item > p { padding: 0 16px 14px; font-size: 13px; }
@media (max-width: 900px) {
  .s3-cols { grid-template-columns: 1fr; }
}

@media (min-width: 901px) and (min-height: 700px) and (prefers-reduced-motion: no-preference) {
  #s2 .mini-label { margin: 2px auto 0; }
}
@media (max-width: 1080px) {
  .bento { grid-template-columns: 1fr 1fr; }
  .bento-card.big { grid-column: span 2; }
  .bento-card:not(.big) { grid-column: span 1; }
}