/* Theme: light corporate pages (white, brand blue #1278E5, Saira), dark sections for the simulator,
   wave dividers between sections, blue→cyan gradient band. Thai falls back to Noto Sans Thai. */
:root {
  --blue: #1278E5; --blue-d: #0b5ec0; --cyan: #29C5F6; --ink: #111418; --muted: #5d6673; --card: #F2F3F5; --line: #e3e6eb;
  --dark: #1f2125; --dark2: #26292e; --dark3: #2f333a; --dline: #3a3f47; --dtext: #e8ecf2; --ddim: #9aa3b2;
  --ok: #22c07a; --bad: #ff4d5e; --warn: #f5a524; --imp: #b18cff;
  --font: "Saira", "Noto Sans Thai", "Leelawadee UI", system-ui, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, Menlo, monospace;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #fff; color: var(--ink); font: 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, select, input { font: inherit; color: inherit; }
button { cursor: pointer; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 600; line-height: 1.25; }
.wrap { max-width: 1320px; margin: 0 auto; padding: 0 24px; }
.dim { color: var(--muted); }
.small { font-size: 13px; }
[hidden] { display: none !important; }

/* ---------- top bar + navigation ---------- */
.topbar { background: var(--blue); color: #fff; text-align: center; font-size: 13px; padding: 4px 16px; }
.nav { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.96); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.navin { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand b { display: block; font-size: 18px; letter-spacing: .12em; font-weight: 700; }
.brand small { display: block; font-size: 11.5px; color: var(--muted); margin-top: -3px; }
.menu { display: flex; gap: 4px; margin-left: auto; }
.menu a { padding: 8px 14px; border-radius: 8px; font-size: 15px; color: #2a2f36; white-space: nowrap; }
.menu a em { font-style: normal; color: var(--blue); font-weight: 300; margin-right: 2px; }
.menu a:hover { background: var(--card); }
.menu a.on { background: #e9f2fd; color: var(--blue); font-weight: 600; }
.lang { display: flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.lang button { border: 0; background: #fff; padding: 5px 11px; color: var(--muted); font-size: 13px; }
.lang button.on { background: var(--blue); color: #fff; font-weight: 600; }

/* ---------- pages ---------- */
.page { display: none; }
.page.on { display: block; }
.pagehead { padding: 44px 24px 28px; }
.ptitle { font-size: 44px; font-weight: 600; color: var(--blue); }
.ptitle em { font-style: normal; font-weight: 300; }
.lead { font-size: 18px; color: #3b424c; max-width: 900px; margin: 10px 0 0; }
.block { padding: 40px 24px 56px; }
.sec { font-size: 32px; font-weight: 600; margin: 8px 0 20px; color: var(--ink); }
.sec.light { color: #fff; }
.wave { height: 72px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 80' preserveAspectRatio='none'%3E%3Cpath d='M0 38 C240 8 480 8 720 34 S1200 72 1440 28 V80 H0Z' fill='%23dceafd'/%3E%3Cpath d='M0 50 C300 24 600 30 840 50 S1260 66 1440 44 V80 H0Z' fill='%2396c3f6'/%3E%3Cpath d='M0 64 C360 46 720 72 1080 56 S1360 50 1440 60 V80 H0Z' fill='%231278E5'/%3E%3C/svg%3E") bottom/100% 100% no-repeat; }
.dark { background: var(--dark); color: var(--dtext); padding: 30px 0 40px; border-top: 6px solid var(--blue); }
.grad { background: linear-gradient(180deg, var(--blue), var(--cyan)); color: #fff; padding: 56px 0 64px; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 9px; padding: 8px 16px; font-size: 15px; line-height: 1.3; }
.btn:hover:not(:disabled) { border-color: var(--blue); }
.btn:disabled { opacity: .4; cursor: default; }
.btn.lg { padding: 12px 24px; font-size: 17px; }
.btn.sm { padding: 4px 10px; font-size: 13px; }
.btn.pri { background: var(--blue); border-color: var(--blue); color: #fff; font-weight: 600; }
.btn.pri:hover:not(:disabled) { background: var(--blue-d); }
.btn.out { border-color: var(--blue); color: var(--blue); }
.btn.dk { background: var(--dark3); border-color: var(--dline); color: var(--dtext); }
.btn.ghost { background: transparent; border-color: var(--dline); color: var(--dtext); }
.btn.bad { background: #4a1820; border-color: #7a2a36; color: #ffd0d6; font-weight: 600; }
.btn.ok { background: #123d2a; border-color: #1f6b47; color: #c4f5dc; }
.pulse { animation: pulse 1s ease-in-out infinite alternate; }
@keyframes pulse { to { box-shadow: 0 0 0 7px rgba(18,120,229,.3); } }

/* ---------- home ---------- */
.hero { text-align: center; padding: 64px 24px 40px; }
.hero h1 { font-size: 54px; font-weight: 400; letter-spacing: -.01em; }
.hero .tag { font-size: 26px; margin: 10px 0 26px; }
.hero .tag b { color: var(--blue); font-weight: 500; }
.ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 44px auto 0; max-width: 1000px; }
.stat { padding: 8px; }
.stat b { display: block; font-size: 40px; font-weight: 600; color: var(--blue); line-height: 1.1; }
.stat span { font-size: 14px; color: var(--muted); }
.cards4 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin: 40px auto 8px; max-width: 1240px; text-align: left; }
.card4 { background: var(--card); border-radius: 12px; padding: 18px 18px 20px; transition: transform .15s, box-shadow .15s; }
.card4:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(17,20,24,.08); }
.card4 h3 { font-size: 19px; color: var(--blue); }
.card4 h3 em { font-style: normal; font-weight: 600; margin-right: 4px; }
.card4 p { font-size: 14.5px; margin: 8px 0 0; color: #2f353d; }
.twocol { display: grid; grid-template-columns: 380px 1fr; gap: 36px; align-items: start; padding-top: 18px; }
.dark .sec { color: #fff; }
.howto { list-style: none; padding: 0; margin: 0 0 24px; counter-reset: h; }
.howto li { counter-increment: h; position: relative; padding: 0 0 18px 50px; }
.howto li::before { content: counter(h); position: absolute; left: 0; top: 0; width: 34px; height: 34px; border-radius: 50%; background: var(--blue); color: #fff; display: grid; place-items: center; font-weight: 600; }
.howto b { display: block; color: var(--cyan); font-size: 18px; }
.howto span { font-size: 15px; color: var(--ddim); }
.modes { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.modecard { background: #fff; color: var(--ink); border-radius: 14px; padding: 22px 26px; }
.modecard h3 { font-size: 24px; color: var(--blue); margin-bottom: 8px; }
.modecard.ondemand h3 { color: #c47a00; }
.modecard ul { margin: 0; padding-left: 20px; }
.modecard li { margin: 6px 0; }
.cols3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cols3 > div { background: var(--card); border-radius: 12px; padding: 20px; }
.cols3 h4 { font-size: 18px; color: var(--blue); margin-bottom: 6px; }
.cols3 p { margin: 0; font-size: 15px; color: #2f353d; }

/* ---------- simulator area (dark) ---------- */
.simgrid { display: grid; grid-template-columns: minmax(0, 1fr) 400px; gap: 20px; align-items: start; }
.slot { min-width: 0; }
.mapwrap { display: flex; flex-direction: column; gap: 10px; }
.simbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 13px; color: var(--ddim); }
.simbar .cams { margin-left: auto; display: flex; gap: 4px; }
.cams button { width: 32px; height: 30px; border-radius: 8px; border: 1px solid var(--dline); background: var(--dark3); color: #fff; }
.badge { padding: 3px 12px; border-radius: 99px; font-size: 12.5px; font-weight: 600; border: 1px solid var(--dline); white-space: nowrap; }
.badge.none { color: #ffb3bd; border-color: #6b2a35; background: #3a1820; }
.badge.always { color: #fff; border-color: var(--blue); background: var(--blue); }
.badge.ondemand { color: #ffe1a8; border-color: #7a5a1c; background: #3b2c10; }
.clock { font-variant-numeric: tabular-nums; color: var(--dtext); min-width: 74px; }
.spd { display: flex; align-items: center; gap: 6px; }
.dark select, .side select { background: var(--dark3); border: 1px solid var(--dline); color: var(--dtext); border-radius: 7px; padding: 4px 6px; }
.kpis { display: flex; gap: 8px; flex-wrap: wrap; }
.kpis:empty { display: none; }
.kpi { background: var(--dark2); border: 1px solid var(--dline); border-radius: 10px; padding: 6px 14px; min-width: 120px; flex: 1; }
.kpi b { display: block; font-size: 20px; font-variant-numeric: tabular-nums; white-space: nowrap; font-weight: 600; }
.kpi span { font-size: 12px; color: var(--ddim); }
.kpi.big b { font-size: 26px; }
.kpi.good b { color: #4ade96; } .kpi.warn b { color: var(--warn); } .kpi.bad b { color: #ff6b7a; } .kpi.imp b { color: var(--cyan); }
.kpi.big.bad { border-color: #7a2a36; background: #33171d; }
.mapbox { position: relative; height: 560px; border-radius: 14px; overflow: hidden; border: 1px solid var(--dline); }
#map { width: 100%; height: 100%; display: block; touch-action: none; }
.legend { position: absolute; left: 12px; bottom: 10px; display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; color: var(--ddim); background: rgba(12,20,34,.78); padding: 4px 10px; border-radius: 8px; }
.legend i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 5px; }
.legend i.ring { border: 1.5px solid #8fb3e6; background: none; width: 10px; height: 10px; vertical-align: -1px; }
.legend em { font-style: normal; }
body[data-page="home"] .simbar { display: none; }
body[data-page="home"] .mapbox { height: 470px; }

/* side panel (dark) */
.side { background: var(--dark2); border: 1px solid var(--dline); border-radius: 14px; padding: 20px; max-height: 760px; overflow-y: auto; font-size: 15px; }
.side:empty { display: none; }
.step h2 { font-size: 24px; margin: 4px 0 10px; color: #fff; }
.stepnum { color: var(--cyan); font-size: 12.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; }
.step p { margin: 0 0 12px; color: var(--dtext); }
.step b { color: #fff; }
.step h4 { font-size: 12.5px; text-transform: uppercase; letter-spacing: .08em; color: var(--ddim); margin: 16px 0 6px; }
.step ul { margin: 0; padding-left: 18px; }
.step li { margin-bottom: 5px; }
.biz { background: rgba(18,120,229,.14); border: 1px solid rgba(18,120,229,.55); border-radius: 12px; padding: 10px 14px; margin-top: 16px; }
.biz h4 { color: #7cc0ff; margin-top: 0; }
.biz p { margin: 0; }
.gnav { display: flex; justify-content: space-between; gap: 8px; margin-top: 20px; }
.grow { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.src { color: var(--ddim); font-size: 12px; margin-top: 16px; }
.cmp { width: 100%; border-collapse: collapse; font-size: 13px; margin: 6px 0 12px; }
.cmp th, .cmp td { border-bottom: 1px solid var(--dline); padding: 6px 4px; text-align: left; vertical-align: top; }
.cmp thead th { color: var(--cyan); }
.cmp tbody th { color: var(--ddim); font-weight: 500; width: 30%; }
.bars { display: grid; gap: 6px; font-size: 13px; }
.bar { display: grid; grid-template-columns: 160px 1fr 64px; align-items: center; gap: 6px; }
.bar i { display: block; height: 10px; border-radius: 4px; }
.bar i.ao { background: var(--cyan); } .bar i.od { background: var(--warn); }
.bar em { font-style: normal; color: var(--ddim); }

/* tour stepper */
.stepper { list-style: none; padding: 0; margin: 22px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px; }
.stepper button { width: 100%; text-align: left; border: 1px solid var(--line); background: #fff; border-radius: 10px; padding: 8px 12px; display: flex; gap: 10px; align-items: center; font-size: 14px; line-height: 1.3; min-height: 54px; }
.stepper em { font-style: normal; font-weight: 600; color: var(--blue); font-size: 15px; }
.stepper li.done button { background: var(--card); color: var(--muted); }
.stepper li.on button { background: var(--blue); border-color: var(--blue); color: #fff; }
.stepper li.on em { color: #fff; }
.howchips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.howchips span, .howchips a { background: var(--card); border-radius: 99px; padding: 6px 14px; font-size: 14px; }
.howchips a:hover { background: #e9f2fd; color: var(--blue); }

/* sandbox controls (dark) */
.sb section { border-bottom: 1px solid var(--dline); padding: 14px 0; }
.sb section:first-child { padding-top: 0; }
.sb section.disabled { opacity: .45; }
.sb h4 { font-size: 13px; text-transform: uppercase; letter-spacing: .07em; color: #fff; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.sb h4 em { font-style: normal; width: 22px; height: 22px; border-radius: 50%; background: var(--blue); display: grid; place-items: center; font-size: 12px; }
.sb h5 { font-size: 13px; color: var(--ddim); font-weight: 500; margin: 12px 0 6px; }
.sb label { display: block; font-size: 13px; color: var(--ddim); margin: 8px 0 0; }
.sb label select, .sb label input[type=range] { display: block; width: 100%; margin-top: 3px; }
.sb label b { color: #fff; }
.sb .chk { display: flex; gap: 6px; align-items: flex-start; color: var(--dtext); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.seg { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--dline); border-radius: 10px; overflow: hidden; }
.seg button { border: 0; background: none; padding: 8px 6px; color: var(--ddim); }
.seg button.on.none { background: #4a1820; color: #ffd0d6; }
.seg button.on.always { background: var(--blue); color: #fff; font-weight: 600; }
.seg button.on.ondemand { background: #5a4214; color: #ffe1a8; font-weight: 600; }
.seg.two { grid-template-columns: 1fr 1fr; }
.chips { display: flex; flex-wrap: wrap; gap: 5px; }
.chip { border: 1px solid var(--dline); background: var(--dark3); color: var(--dtext); border-radius: 99px; padding: 3px 11px; font-size: 13px; }
.chip small { color: var(--ddim); margin-left: 3px; }
.chip.on { border-color: var(--blue); background: rgba(18,120,229,.28); color: #fff; }
.chip.on.bad { border-color: #7a2a36; background: #4a1820; color: #ffd0d6; }
.chip.l7 { border-style: dashed; }
.chips.small .chip { padding: 2px 9px; font-size: 12px; }
.note { font-size: 13px; background: var(--dark3); border-left: 3px solid var(--ddim); padding: 7px 11px; border-radius: 5px; margin: 10px 0; }
.note.bad { border-color: var(--bad); background: #35161c; }
.note.warn { border-color: var(--warn); background: #33280f; }
.note ul { margin: 4px 0 0; padding-left: 18px; }
input[type=range] { accent-color: var(--blue); }
.odstate { font-weight: 600; }
.odstate.detecting, .odstate.pending, .odstate.diverting { color: var(--warn); }
.odstate.diverted { color: var(--cyan); }
.odstate.idle { color: var(--ddim); }

/* ---------- cards below the simulator ---------- */
.grid2 { display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; align-items: start; }
.card { border-radius: 14px; padding: 12px 14px; display: flex; flex-direction: column; min-width: 0; }
.card h3 { font-size: 12.5px; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 8px; font-weight: 600; }
.card.light { background: #fff; border: 1px solid var(--line); box-shadow: 0 2px 10px rgba(17,20,24,.04); }
.card.light h3 { color: var(--muted); }
.card.dk { background: var(--dark); color: var(--dtext); border: 1px solid var(--dline); }
.card.dk h3 { color: var(--ddim); }
.edgecard, .chartcard, .logcard { height: 340px; }
.dark .edgecard { height: 320px; margin-top: 18px; background: var(--dark2); }
.dark .edgebig .edgecard { height: 600px; }
.grid2e { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
#edge, #chart { flex: 1; min-height: 0; width: 100%; }
.bgp { font-size: 13px; border-top: 1px solid var(--dline); padding-top: 6px; }
.bgp .dim { color: var(--ddim); }
.chartleg { display: flex; gap: 14px; font-size: 12px; color: var(--ddim); }
.chartleg i { display: inline-block; width: 12px; height: 3px; vertical-align: middle; margin-right: 4px; }
.chartleg .l i { background: #3ddc97; } .chartleg .a i { background: var(--bad); } .chartleg .b i { background: var(--imp); }
#log { list-style: none; margin: 0; padding: 0; overflow-y: auto; font-size: 13.5px; flex: 1; }
#log li { padding: 4px 0 4px 10px; border-left: 3px solid var(--line); margin-bottom: 3px; }
#log li.bad { border-color: var(--bad); } #log li.ok { border-color: var(--blue); } #log li.warn { border-color: var(--warn); }
#log time { color: var(--muted); margin-right: 8px; font-variant-numeric: tabular-nums; font-size: 12.5px; }
.grid2 .logcard { margin-top: 16px; height: 260px; }

/* ---------- onboarding ---------- */
.onbhead { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; margin-top: 22px; }
.onbhead .seg { border-color: var(--line); min-width: 380px; }
.onbhead .seg button { color: var(--muted); padding: 10px; font-size: 15px; }
.onbhead .seg button.on.always { color: #fff; }
.onbhead .seg button.on.ondemand { background: #f5a524; color: #fff; }
.omode { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 14px; }
.omode .seg { min-width: 260px; }
.tl { margin-top: 22px; padding-bottom: 22px; }
.tlbar { position: relative; height: 40px; }
.tlbar .seg { position: absolute; top: 0; height: 40px; border-radius: 8px; background: var(--card); border: 1px solid var(--line); display: flex; align-items: center; overflow: hidden; }
.tlbar .seg span { font-size: 12.5px; padding: 0 8px; white-space: nowrap; color: var(--muted); }
.tlbar .seg.done { background: #e6f7ee; border-color: #b4e6cc; } .tlbar .seg.done span { color: #157a4a; }
.tlbar .seg.now { background: var(--blue); border-color: var(--blue); } .tlbar .seg.now span { color: #fff; font-weight: 600; }
.tlnow { position: absolute; top: -6px; bottom: -6px; width: 3px; background: var(--warn); border-radius: 2px; }
.tlnow b { position: absolute; top: 48px; left: -24px; font-size: 13px; color: #b06d00; white-space: nowrap; }
.tlscale { position: relative; height: 0; }
.tlscale span { position: absolute; top: 4px; font-size: 12px; color: var(--muted); transform: translateX(-50%); }
.cfgcard { height: 600px; }
.cfgbody { display: flex; flex-direction: column; min-height: 0; flex: 1; }
.cfgbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 8px; }
.seg.mini { display: inline-flex; border-color: var(--line); }
.seg.mini button { padding: 3px 11px; font-size: 13px; color: var(--muted); }
.cfgbar .btn.ghost { color: var(--ink); border-color: var(--line); }
.blks { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 13px; margin-bottom: 8px; align-items: center; background: var(--card); border-radius: 10px; padding: 8px 10px; }
.blk { display: inline-flex; gap: 5px; align-items: center; }
.blk.req { font-weight: 600; }
.blk input[type=checkbox] { accent-color: var(--blue); margin: 0; }
.code { flex: 1; min-height: 0; overflow: auto; margin: 0; background: #0f1115; border-radius: 10px; padding: 10px 12px; font: 12.5px/1.5 var(--mono); color: #d6e4ff; white-space: pre; }
.code.small { flex: none; margin: 8px 0; }
.code .cm { color: #7a8597; }
.code .ph { color: #ffc861; }
.in { background: var(--dark3); border: 1px solid var(--dline); color: var(--dtext); border-radius: 7px; padding: 5px 8px; width: 100%; display: block; margin-top: 3px; }
.in.sm { display: inline-block; width: 150px; padding: 3px 7px; margin: 0; background: #fff; color: var(--ink); border-color: var(--line); }
.task.cur { background: var(--dark3); border: 1px solid var(--blue); border-radius: 12px; padding: 12px 14px; margin-bottom: 14px; }
.task.cur p { margin: 6px 0 8px; font-size: 14.5px; }
.task.cur .btn.pri { margin-top: 10px; }
.task label { display: block; font-size: 13px; color: var(--ddim); margin-top: 8px; }
.own { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; padding: 1px 8px; border-radius: 99px; margin-right: 4px; }
.own.c { background: #123d2a; color: #c4f5dc; } .own.i { background: rgba(18,120,229,.35); color: #fff; } .own.b { background: #4a3812; color: #ffe1a8; }
.tasks { display: grid; gap: 10px; margin: 8px 0 14px; }
.ph h5 { margin: 0 0 3px; color: var(--ddim); font-size: 13px; font-weight: 600; }
.ph.done h5 { color: #4ade96; }
.ti { font-size: 13.5px; padding: 1px 0 1px 6px; color: var(--ddim); }
.ti.done { color: var(--dtext); } .ti.now { color: var(--cyan); font-weight: 600; }
.ti em { font-style: normal; color: var(--ddim); margin-left: 6px; font-size: 12px; }
.cons { font-size: 14px; display: grid; gap: 6px; }
.kv { display: flex; justify-content: space-between; gap: 8px; }
.kv span { color: var(--muted); }
.rs { display: flex; gap: 4px; flex-wrap: wrap; }
.rs span { font-size: 12px; padding: 2px 8px; border-radius: 6px; background: var(--card); color: var(--muted); }
.rs span.done { background: #e6f7ee; color: #157a4a; } .rs span.now { background: var(--blue); color: #fff; }
.okc { color: #16a34a; } .badc { color: #e11d48; } .warnc { color: #c47a00; }
.conn { width: 100%; border-collapse: collapse; font-size: 13.5px; margin-top: 6px; }
.conn th, .conn td { text-align: left; padding: 4px 6px; border-bottom: 1px solid var(--line); }
.conn th { color: var(--muted); font-weight: 500; }
.side .code.small { font-size: 12px; }

/* ---------- reference ---------- */
.tbl { width: 100%; border-collapse: collapse; font-size: 15px; margin-bottom: 28px; }
.tbl th, .tbl td { text-align: left; vertical-align: top; padding: 9px 12px; border-bottom: 1px solid var(--line); }
.tbl thead th { background: var(--card); font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.tbl.facts th { width: 200px; color: var(--blue); font-weight: 600; }
.tbl.pops { font-size: 13.5px; } .tbl.pops td { padding: 5px 8px; }
.pill { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 10px; border-radius: 99px; white-space: nowrap; }
.pill.s { background: #e6f7ee; color: #157a4a; } .pill.p { background: #fff3dc; color: #a66400; } .pill.g { background: #fde8eb; color: #c0283d; }
.popcols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.popcols h4 { color: var(--blue); margin-bottom: 6px; }
.gloss { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 24px; }
.gloss > div { background: var(--card); border-radius: 12px; padding: 12px 16px; }
.gloss b { color: var(--blue); }
.gloss p { margin: 4px 0 0; font-size: 14.5px; }
.block .src { color: var(--muted); }

/* ---------- failover / bypass (Always-On, page 05) ---------- */
.bysc { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 18px; }
.bytri { margin-top: 18px; }
.bytri h3 { font-size: 17px; margin: 0 0 10px; }
.trigrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.tri { display: flex; flex-direction: column; gap: 4px; text-align: left; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; font-size: 13.5px; color: #2f353d; }
.tri b { font-size: 14px; color: var(--ink, #1f2125); }
.tri em { font-style: normal; color: var(--blue); font-weight: 600; margin-top: auto; }
button.tri:hover { border-color: #b9d6f7; }
button.tri.on { border-color: var(--blue); background: #f1f7fe; }
.bydes { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-top: 16px; }
.bydes .lbl { font-weight: 600; font-size: 14px; }
.bydes .dim { flex: 1 1 320px; }
.bydes-t td, .bydes-t th { font-size: 13.5px; vertical-align: top; }
.bysvg .bx.down { stroke: var(--bad); stroke-dasharray: 6 4; fill-opacity: .55; }
.bysvg .bx.pop.prob { stroke: var(--warn); stroke-dasharray: 6 4; }
.bysvg .fl.leak { stroke: var(--warn); stroke-dasharray: 6 8; animation: byflow 1.2s linear infinite; }
.bysvg .fl.inter { stroke: #f78fd0; stroke-dasharray: 3 7; animation: byflow 1s linear infinite; }
.bysvg .fl.bb { stroke: var(--imp); stroke-width: 2; stroke-dasharray: 2 5; animation: byflow 1.6s linear infinite; }
.bysvg .bx.inet { fill: none; stroke: var(--dline); stroke-dasharray: 4 5; }
.bysvg .bx.grpL { stroke: #2f8a62; } .bysvg .bx.grpI { stroke: #a8508a; }
.bysvg .bx.pop.oth { fill: #1d2c45; stroke: #34507a; stroke-dasharray: 5 4; }
#bySide { max-height: none; }
.bygrp { margin-top: 10px; }
.bygrp td { font-size: 13.5px; }
.gdot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }
.gdot.L { background: #3ddc97; } .gdot.I { background: #f78fd0; }
.bysvg .fl.gre.dead { stroke: var(--bad); stroke-opacity: .5; stroke-width: 1.4; stroke-dasharray: 2 7; animation: none; }
.bycard { text-align: left; background: var(--card); border: 2px solid transparent; border-radius: 14px; padding: 14px 16px; }
.bycard:hover { border-color: #b9d6f7; }
.bycard.on { background: #e9f2fd; border-color: var(--blue); }
.bycard h3 { font-size: 19px; color: var(--blue); margin: 8px 0 4px; }
.bycard p { margin: 0; font-size: 14px; color: #2f353d; }
.bystep { grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }
.bydiag { background: var(--dark2); border: 1px solid var(--dline); border-radius: 14px; padding: 10px; overflow-x: auto; }
.bysvg { display: block; width: 100%; min-width: 680px; height: auto; font-family: var(--font); }
.bysvg .bx { fill: var(--dark3); stroke: var(--dline); stroke-width: 1.5; }
.bysvg .bx.imp { fill: #1b2a44; stroke: #2f5fa0; }
.bysvg .bx.imp.prob { stroke: var(--warn); stroke-dasharray: 6 4; }
.bysvg .bx.pop { fill: #24406b; stroke: #3f78c4; }
.bysvg .bx.net { fill: #22262d; }
.bysvg .bx.dc { fill: #1d3328; stroke: #2f7a55; }
.bysvg .hl { stroke: var(--cyan) !important; stroke-width: 3 !important; animation: byhl 1.1s ease-in-out infinite alternate; }
@keyframes byhl { to { stroke-opacity: .35; } }
.bysvg .t1 { fill: #fff; font-size: 16px; font-weight: 600; }
.bysvg .t2 { fill: var(--dtext); font-size: 13.5px; }
.bysvg .t3 { fill: var(--ddim); font-size: 12px; }
.bysvg .okc { fill: #4ade96; } .bysvg .dimc { fill: var(--ddim); } .bysvg .badc { fill: #ff7a88; } .bysvg .warnc { fill: var(--warn); }
.bysvg .cyc { fill: var(--cyan); } .bysvg .imc { fill: var(--imp); }
.bysvg .hlt { font-weight: 700; }
.bysvg .t2, .bysvg .t3 { paint-order: stroke; stroke: var(--dark2); stroke-width: 4px; stroke-linejoin: round; }
.cfgcard.bycfg { height: auto; }
.bycfg .code { flex: none; min-height: 320px; }
.bysvg .fl { fill: none; stroke-linecap: round; }
.bysvg .fl.ok { stroke: #3ddc97; stroke-dasharray: 10 8; animation: byflow 1s linear infinite; }
.bysvg .fl.atk { stroke: var(--bad); stroke-opacity: .75; stroke-dasharray: 4 12; animation: byflow .6s linear infinite; }
.bysvg .fl.gre { stroke: var(--imp); stroke-dasharray: 10 8; animation: byflow 1s linear infinite; }
.bysvg .fl.gre.idle { stroke-opacity: .45; stroke-dasharray: 3 6; animation: none; }
.bysvg .fl.eg { stroke: #5aa9ff; stroke-width: 1.6; stroke-dasharray: 6 8; animation: byflow 1.4s linear infinite; }
.bysvg .fl.lan { stroke: #3ddc97; stroke-width: 2; }
.bysvg .fl.off { stroke: #4a505a; stroke-width: 1.2; stroke-dasharray: 2 6; }
.bysvg .lg .fl { stroke-width: 3; animation: none; }
@keyframes byflow { to { stroke-dashoffset: -36; } }
.bysvg .stat rect { fill: #123d2a; stroke: #1f6b47; } .bysvg .stat text { fill: #c4f5dc; font-size: 14px; font-weight: 600; }
.bysvg .stat.warn rect { fill: #3b2c10; stroke: #7a5a1c; } .bysvg .stat.warn text { fill: #ffe1a8; }
.bysvg .stat.dir rect { fill: #3a1820; stroke: #6b2a35; } .bysvg .stat.dir text { fill: #ffd0d6; }
.bynet { display: grid; grid-template-columns: 1.2fr 1fr; gap: 14px; margin-top: 14px; }
.bynet .card.dk { background: var(--dark2); }
.bytbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.bytbl th, .bytbl td { text-align: left; padding: 5px 6px; border-bottom: 1px solid var(--dline); }
.bytbl thead th { color: var(--ddim); font-weight: 500; font-size: 12.5px; }
.bytbl tbody th { font-weight: 500; white-space: nowrap; }
.bytbl code, .bycheck code { font-family: var(--mono); font-size: 13px; }
.bytbl code { color: #d6e4ff; }
.dimc { color: var(--ddim); }
.bysum { margin-top: 8px; font-size: 14px; }
.bysum.ok b { color: #4ade96; } .bysum.warn b { color: var(--warn); } .bysum.dir b { color: #ff7a88; }
.cons.by { color: var(--dtext); }
.cons.by .kv span { color: var(--ddim); }
.cons.by .okc { color: #4ade96; } .cons.by .warnc { color: var(--warn); } .cons.by .badc { color: #ff7a88; }
.btnmini { display: inline-block; margin-left: 6px; font-size: 12px; padding: 1px 9px; border-radius: 6px; background: var(--blue); color: #fff; }
.own.v { background: var(--dark3); color: var(--dtext); border: 1px solid var(--dline); } .own.s { background: #4a1820; color: #ffd0d6; }
.byinfo { display: grid; gap: 16px; }
.byrules, .bycheck, .bysrc { margin: 0; padding-left: 20px; font-size: 14.5px; }
.byrules li, .bycheck li, .bysrc li { margin: 4px 0; }
.bysrc a { color: var(--blue); }
@media (max-width: 1100px) { .bysc, .trigrid { grid-template-columns: 1fr 1fr; } .bynet { grid-template-columns: 1fr; } }
@media (max-width: 700px) { .bysc, .trigrid { grid-template-columns: 1fr; } }

/* ---------- footer ---------- */
.foot { background: var(--dark); color: var(--ddim); }
.foot .wave { background-color: #fff; }
.footin { display: grid; grid-template-columns: 1.2fr 1fr; gap: 20px; padding: 28px 24px 34px; font-size: 14px; }
.footin b { color: #fff; letter-spacing: .12em; font-size: 17px; }
.footin p { margin: 6px 0 0; }
.fnav { display: flex; gap: 16px; flex-wrap: wrap; justify-content: flex-end; }
.fnav a:hover { color: #fff; }
.footin .small { grid-column: 1 / -1; color: #7d8594; }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .simgrid, .twocol, .grid2, .grid2e, .modes { grid-template-columns: 1fr; }
  .side { max-height: none; }
  .mapbox { height: 440px; }
  .cards4 { grid-template-columns: repeat(2, 1fr); }
  .cols3, .popcols { grid-template-columns: 1fr; }
  .navin { flex-wrap: wrap; height: auto; padding: 10px 24px; gap: 10px; }
  .menu { order: 3; width: 100%; overflow-x: auto; margin-left: 0; }
  .lang { margin-left: auto; }
}
@media (max-width: 700px) {
  .wrap { padding: 0 16px; }
  .hero { padding: 36px 16px 24px; }
  .hero h1 { font-size: 34px; }
  .hero .tag { font-size: 19px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat b { font-size: 30px; }
  .cards4, .gloss { grid-template-columns: 1fr; }
  .ptitle { font-size: 32px; }
  .pagehead { padding: 28px 16px 20px; }
  .block { padding: 28px 16px 40px; }
  .mapbox { height: 360px; }
  .dark .edgebig .edgecard { height: 380px; }
  .edgecard { overflow-x: auto; }
  #edge { min-width: 680px; }   /* keep the diagram legible: scroll sideways on a phone */
  .legend { display: none; }
  .kpi { min-width: 0; padding: 4px 8px; flex-basis: 30%; }
  .kpi b { font-size: 15px; } .kpi.big b { font-size: 18px; }
  .onbhead .seg, .omode .seg { min-width: 0; width: 100%; }
  .omode { width: 100%; flex-wrap: wrap; }
  .tlbar .seg span { display: none; }
  .bar { grid-template-columns: 110px 1fr 54px; }
  .tbl.facts th { width: 110px; }
  .brand small { display: none; }
  .footin { grid-template-columns: 1fr; }
  .fnav { justify-content: flex-start; }
}

/* walkthrough dots, timeline label */
.dots { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; align-items: center; }
.dot { width: 10px; height: 10px; border-radius: 50%; border: 0; padding: 0; background: var(--dline); }
.dot.on { background: var(--cyan); }
.tlnow b { left: 6px; }
.gnav .btn { white-space: nowrap; }
.side .btn:not(.pri):not(.bad):not(.ok) { background: var(--dark3); border-color: var(--dline); color: var(--dtext); }