/* DocNest landing — visual language shared with the admin console:
   primary #2065d8, ink #1c2430, canvas #f5f7fa, dark #182433. */
:root {
  --primary: #2065d8;
  --primary-deep: #1855bc;
  --ink: #1c2430;
  --ink-soft: #394658;
  --muted: #8290a3;
  --canvas: #f5f7fa;
  --dark: #182433;
  --dark-deep: #101a26;
  --line: #e4e8ef;
  --card: #ffffff;
  --ok: #19754d;
  --warn: #8a6d3b;
  --radius: 10px;
  --font: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; font: 15px/1.7 var(--font); color: var(--ink); background: var(--canvas); }
h1, h2, h3, p { margin: 0; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
code { padding: 1px 6px; border-radius: 4px; background: #eef2f7; font-size: .9em; }
button { font: inherit; cursor: pointer; }

.eyebrow { color: #6e7b8f; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; font-weight: 700; }
.muted { color: var(--muted); font-size: 13px; line-height: 1.7; }
.small { font-size: 12px; }

.btn { display: inline-block; border-radius: 7px; padding: 10px 18px; font-weight: 700; font-size: 14px; border: 1px solid transparent; transition: background .15s, color .15s, border-color .15s, transform .15s; text-align: center; }
.btn:active { transform: translateY(1px); }
.btn.primary { color: #fff; background: var(--primary); }
.btn.primary:hover { background: var(--primary-deep); text-decoration: none; }
.btn.ghost { color: var(--ink-soft); background: #fff; border-color: var(--line); }
.btn.ghost:hover { border-color: #b9c6d8; }
.btn.outline { color: var(--primary); background: #fff; border-color: #b9d0f0; }
.btn.outline:hover { border-color: var(--primary); text-decoration: none; }
.btn.lg { padding: 13px 26px; font-size: 15px; }
.btn.full { width: 100%; margin-top: 18px; }

/* nav */
.nav { position: sticky; top: 0; z-index: 50; display: flex; align-items: center; gap: 26px; padding: 13px clamp(18px, 4vw, 48px); background: rgba(255, 255, 255, .92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-size: 17px; font-weight: 750; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 8px; color: #fff; background: var(--primary); font-weight: 800; }
.nav-links { display: flex; gap: 22px; margin-left: 8px; }
.nav-links a { color: var(--ink-soft); font-size: 14px; font-weight: 600; }
.nav-links a:hover { color: var(--primary); text-decoration: none; }
.nav-actions { margin-left: auto; display: flex; gap: 10px; }
@media (max-width: 760px) { .nav-links { display: none; } }

/* hero */
.hero { background: linear-gradient(180deg, #eaf1fb 0%, var(--canvas) 100%); border-bottom: 1px solid var(--line); }
.hero-inner { max-width: 1060px; margin: 0 auto; padding: clamp(56px, 9vw, 96px) 24px 58px; text-align: center; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.25; letter-spacing: -.02em; margin: 18px 0 16px; }
.hero h1 strong { color: var(--primary); }
.hero-sub { max-width: 720px; margin: 0 auto; color: var(--ink-soft); font-size: 16px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.hero-note { margin-top: 14px; color: var(--warn); font-size: 13px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 34px; }
.hero-badges span { padding: 6px 13px; border: 1px solid var(--line); border-radius: 999px; background: #fff; color: var(--ink-soft); font-size: 12.5px; font-weight: 600; }

/* sections */
.section { max-width: 1060px; margin: 0 auto; padding: clamp(48px, 7vw, 76px) 24px; }
.section.alt { max-width: none; background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section.alt > * { max-width: 1012px; margin-left: auto; margin-right: auto; }
.section-head { margin-bottom: 34px; }
.section-head h2 { margin: 10px 0 8px; font-size: clamp(22px, 3.2vw, 29px); letter-spacing: -.02em; }
.section-head p { max-width: 640px; color: var(--muted); font-size: 14px; }

/* cards */
.card-grid { display: grid; gap: 14px; }
.card-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
.card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid.cols-5.compact { grid-template-columns: repeat(5, 1fr); }
.card { min-width: 0; padding: 18px 20px; border: 1px solid #e2e7ee; border-radius: var(--radius); background: var(--card); }
.card strong { display: block; font-size: 14.5px; color: #273448; }
.card small { display: block; margin-top: 7px; color: var(--muted); font-size: 12.5px; line-height: 1.65; }
.card.feature { padding: 24px 22px; }
.feature-icon { width: 40px; height: 40px; display: grid; place-items: center; margin-bottom: 15px; border-radius: 10px; background: #eaf1fb; color: var(--primary); font-size: 19px; }
.card.why { border-color: #d8e6fb; background: #f7faff; }
@media (max-width: 980px) {
  .card-grid.cols-5, .card-grid.cols-5.compact { grid-template-columns: repeat(2, 1fr); }
  .card-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) { .card-grid { grid-template-columns: 1fr !important; } }

/* targets split */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.panel { min-width: 0; padding: 24px 26px; border: 1px solid #e2e7ee; border-radius: var(--radius); background: var(--canvas); }
.section.alt .panel { background: #fff; border-color: #edf0f4; }
.panel h3 { font-size: 16px; color: #29364a; margin-bottom: 16px; }
.tick-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.tick-list li { position: relative; padding-left: 24px; color: var(--ink-soft); font-size: 14px; }
.tick-list li::before { content: "✓"; position: absolute; left: 0; color: var(--primary); font-weight: 800; }
.tick-list strong { color: #273448; }
@media (max-width: 760px) { .split { grid-template-columns: 1fr; } }

/* compare table */
.table-wrap { overflow-x: auto; border: 1px solid #e2e7ee; border-radius: var(--radius); background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
th, td { padding: 13px 18px; border-bottom: 1px solid #edf0f4; text-align: left; font-size: 13.5px; color: var(--ink-soft); }
thead th { background: #f7f9fc; color: #394658; font-size: 12.5px; letter-spacing: .04em; }
tbody tr:last-child td { border-bottom: 0; }
th.hl, td.hl { color: #17417e; font-weight: 700; background: #f2f7ff; }

/* pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: stretch; }
.price-card { position: relative; display: flex; flex-direction: column; padding: 28px 26px; border: 1px solid #e2e7ee; border-radius: 12px; background: #fff; }
.price-card.featured { border-color: #a9c6f0; box-shadow: 0 18px 44px rgba(32, 101, 216, .12); }
.plan-badge { position: absolute; top: -11px; left: 26px; padding: 3px 11px; border-radius: 999px; background: var(--primary); color: #fff; font-size: 11px; font-weight: 700; }
.plan-name { color: var(--muted); font-size: 13px; font-weight: 700; letter-spacing: .06em; }
.price { margin: 12px 0 2px; font-size: 36px; font-weight: 800; letter-spacing: -.03em; }
.price small { font-size: 14px; color: var(--muted); font-weight: 600; }
.price-sub { color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.price-card .tick-list { margin: 16px 0 4px; flex: 1; }
@media (max-width: 860px) { .pricing-grid { grid-template-columns: 1fr; } }

/* faq */
.faq-list { display: grid; gap: 10px; }
details { border: 1px solid #e2e7ee; border-radius: var(--radius); background: #fff; overflow: hidden; }
summary { padding: 16px 20px; font-weight: 700; font-size: 14.5px; color: #273448; cursor: pointer; list-style: none; }
summary::before { content: "+"; display: inline-block; width: 20px; color: var(--primary); font-weight: 800; }
details[open] summary::before { content: "−"; }
details[open] summary { border-bottom: 1px solid #edf0f4; }
details p { padding: 14px 20px 18px 44px; color: var(--ink-soft); font-size: 14px; }

/* portal */
.portal { display: grid; grid-template-columns: minmax(320px, 420px) minmax(0, 1fr); gap: 18px; align-items: start; }
.portal-auth { padding: 30px 30px 26px; border: 1px solid #e2e7ee; border-radius: 12px; background: #fff; box-shadow: 0 16px 45px rgba(31, 42, 55, .08); }
.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 22px; padding: 4px; border-radius: 8px; background: #f0f3f8; }
.tab { border: 0; border-radius: 6px; padding: 9px; color: var(--muted); background: transparent; font-weight: 700; font-size: 14px; }
.tab[aria-selected="true"] { color: var(--ink); background: #fff; box-shadow: 0 1px 4px rgba(20, 30, 45, .12); }
.portal-form { display: grid; gap: 16px; }
.portal-form label { display: grid; gap: 7px; color: var(--ink-soft); font-size: 13px; font-weight: 650; }
.portal-form input { border: 1px solid #dce2ea; border-radius: 6px; background: #fff; color: #202b3a; padding: 11px 12px; outline: none; font: inherit; transition: border .15s, box-shadow .15s; }
.portal-form input:focus { border-color: #4a81dc; box-shadow: 0 0 0 3px rgba(51, 112, 216, .12); }
.portal-form.inline { grid-template-columns: 1fr auto; gap: 10px; margin-top: 14px; }
.form-msg { min-height: 18px; margin: 2px 0 0; font-size: 13px; }
.form-msg.ok { color: var(--ok); }
.form-msg.err { color: #c53a3a; }
.portal-account { display: grid; gap: 14px; }
.account-card { padding: 24px 26px; border: 1px solid #d8e6fb; border-radius: 12px; background: linear-gradient(135deg, #f7faff, #eef5ff); }
.account-card .account-email { display: flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 750; color: #22304a; }
.avatar { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: #1e55af; background: #d5e3ff; font-size: 13px; font-weight: 800; }
.account-rows { display: grid; gap: 9px; margin-top: 18px; }
.account-row { display: flex; justify-content: space-between; gap: 12px; font-size: 13.5px; color: var(--ink-soft); }
.account-row b { color: #22304a; }
.trial-flag { margin-top: 16px; padding: 10px 13px; border: 1px solid #f0d9b6; border-radius: 7px; background: #fdf6ec; color: var(--warn); font-size: 12.5px; }
.progress-wrap { margin-top: 6px; }
.progress-track { height: 8px; border-radius: 999px; background: #e3e9f2; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, #4a90e2, var(--primary)); transition: width .4s; }
.progress-note { margin-top: 7px; color: var(--muted); font-size: 12px; }
.redeem-panel, .install-panel { padding: 20px 24px; border: 1px solid #e2e7ee; border-radius: var(--radius); background: #fff; }
.redeem-panel h3, .install-panel h3 { font-size: 15px; color: #29364a; margin-bottom: 10px; }
.install-steps { margin: 8px 0 0; padding-left: 20px; display: grid; gap: 8px; color: var(--ink-soft); font-size: 13.5px; }
#btn-logout { justify-self: start; }
@media (max-width: 860px) { .portal { grid-template-columns: 1fr; } }

/* footer */
.footer { border-top: 1px solid var(--line); background: var(--dark); color: #aeb9c9; }
.footer-inner { max-width: 1060px; margin: 0 auto; padding: 34px 24px; display: grid; gap: 8px; }
.footer .brand { color: #fff; }
.footer .muted { color: #738198; }