/* Do Gutter Guards Work in Nashville? — one-page homeowner guide.

   Composition concept: "is the whole system working?"
   A single content axis runs the length of the page. From tablet width up, a
   continuous vertical system line sits on that axis and each H2 attaches to it
   at a node, so the four questions read as one connected system rather than
   four brochure cards. Every H2 owns a full-bleed field of its own and the
   fields change deliberately: deep slate opening -> white mechanism field with
   a condition grid and a company matrix -> cool mist debris field -> deep slate
   failure field carrying the cross-section -> warm signal field carrying the
   rain check. Type is all sans with a monospace label voice; no serif, no
   card-grid rhythm, no alternating paper sheets. */

:root{
  --ink:#111823;
  --ink-2:#3D4A5A;
  --ink-3:#65717F;

  --deep:#0E1723;
  --deep-2:#132030;
  --on-deep:#E7EDF3;
  --on-deep-2:#A6B7C7;

  --white:#FFFFFF;
  --paper:#F7F9FB;
  --mist:#E8EDF3;
  --mist-2:#D5DEE8;
  --warm:#FCF5E8;
  --warm-2:#EFE0C4;

  --line:#DBE2EA;
  --line-2:#EBF0F5;

  --water:#0F5F7A;
  --water-2:#0A4459;
  --water-lt:#8FD3EE;

  --sig:#A25E00;
  --sig-lt:#F0A93B;

  --shell:1120px;
  --gut:clamp(18px,5vw,42px);
  --rail-gap:0px;
  --pad:clamp(46px,9vw,104px);
  --read:66ch;

  --surface:var(--white);

  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--white);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:900px){ body{font-size:18px} }

p{margin:0 0 1.1em;overflow-wrap:break-word}
p:last-child{margin-bottom:0}

h1,h2{
  margin:0;
  font-weight:750;
  letter-spacing:-.021em;
  line-height:1.1;
  overflow-wrap:break-word;
}

a{color:var(--water);text-decoration:underline;text-decoration-thickness:.07em;text-underline-offset:.17em}
a:hover{color:var(--water-2);text-decoration-thickness:.13em}

:focus-visible{outline:3px solid var(--sig);outline-offset:3px;border-radius:3px}
.open :focus-visible,.sec--failure :focus-visible,.foot :focus-visible{outline-color:var(--sig-lt)}

.vh{
  position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;border:0;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;
}

.skip{
  position:absolute;left:-9999px;top:0;z-index:30;
  background:var(--sig-lt);color:var(--deep);
  padding:14px 22px;font-weight:700;text-decoration:none;
}
.skip:focus{left:0}

[id]{scroll-margin-top:16px}

.shell{
  position:relative;
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gut);
  padding-block:var(--pad);
}

.axis{padding-left:var(--rail-gap)}

/* --- the system line: one continuous axis down the page ------------------ */

@media (min-width:1000px){
  :root{--rail-gap:58px}

  .sec > .shell::before{
    content:"";
    position:absolute;
    left:var(--gut);
    top:0;
    bottom:0;
    width:2px;
    background:currentColor;
    opacity:.22;
  }

  .lede{position:relative}
  .lede::before{
    content:"";
    position:absolute;
    left:calc(-1 * var(--rail-gap) - 5px);
    top:.42em;
    width:14px;
    height:14px;
    border-radius:50%;
    background:var(--sig);
    box-shadow:0 0 0 5px var(--surface);
  }
  .sec--failure .lede::before{background:var(--sig-lt)}
}

/* ============================================================
   Opening — deep slate field, rain lines, no masthead bar
   ============================================================ */

.open{
  position:relative;
  background:var(--deep);
  color:var(--on-deep);
  overflow:hidden;
}

.open__rain{
  position:absolute;
  inset:0;
  background-image:
    repeating-linear-gradient(96deg,rgba(143,211,238,.16) 0 1px,transparent 1px 13px);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0) 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0) 72%);
  pointer-events:none;
}

.open__in{position:relative;padding-block:clamp(52px,12vw,116px) clamp(40px,8vw,76px)}

.open h1{
  font-size:clamp(2rem,7.3vw,4.05rem);
  color:#FFFFFF;
  max-width:15ch;
}

.open__answer{
  margin-top:clamp(24px,4.4vw,40px);
  max-width:60ch;
  padding-left:clamp(16px,2.6vw,26px);
  border-left:4px solid var(--sig-lt);
  font-size:clamp(1.08rem,2.9vw,1.46rem);
  line-height:1.5;
  color:#FFFFFF;
  font-weight:450;
}

.open__note{
  margin-top:clamp(22px,3.4vw,32px);
  max-width:var(--read);
  color:var(--on-deep-2);
}

.index{
  margin-top:clamp(30px,5vw,52px);
  padding-top:clamp(18px,2.6vw,24px);
  border-top:1px solid rgba(166,183,199,.32);
  display:grid;
  gap:2px;
}

.index__link{
  display:flex;
  align-items:center;
  min-height:46px;
  padding:6px 0;
  color:var(--on-deep);
  text-decoration:none;
  font-family:var(--mono);
  font-size:.86rem;
  letter-spacing:.02em;
}
.index__link::before{
  content:"";
  flex:0 0 auto;
  width:16px;height:2px;
  margin-right:12px;
  background:var(--sig-lt);
}
.index__link:hover{color:#FFFFFF}
.index__link:hover::before{width:26px}

@media (min-width:560px){ .index{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:24px} }
@media (min-width:940px){
  .index{display:flex;flex-wrap:wrap;gap:8px clamp(24px,4vw,54px)}
  .index__link{padding-right:0}
}

/* ============================================================
   Shared section furniture
   ============================================================ */

.sec--job{background:var(--white);--surface:var(--white);color:var(--ink)}
.sec--debris{background:var(--mist);--surface:var(--mist);color:var(--ink)}
.sec--failure{background:var(--deep-2);--surface:var(--deep-2);color:var(--on-deep)}
.sec--check{background:var(--warm);--surface:var(--warm);color:var(--ink)}

.lede{margin-bottom:clamp(26px,4vw,40px);padding-bottom:clamp(16px,2.4vw,22px);border-bottom:2px solid var(--line)}
.sec--debris .lede{border-bottom-color:var(--mist-2)}
.sec--failure .lede{border-bottom-color:rgba(240,169,59,.5)}
.sec--check .lede{border-bottom-color:var(--warm-2)}

.lede h2{font-size:clamp(1.5rem,4.6vw,2.42rem);max-width:22ch}
.sec--failure .lede h2{color:#FFFFFF}

.lede__a{
  margin:clamp(14px,2.2vw,20px) 0 0;
  max-width:54ch;
  font-size:clamp(1.05rem,2.5vw,1.3rem);
  line-height:1.48;
  font-weight:500;
  color:var(--ink);
}
.sec--failure .lede__a{color:var(--sig-lt)}

.prose{max-width:var(--read);color:var(--ink-2)}
.cue{margin-bottom:.7em;font-weight:650;color:var(--ink)}

/* ============================================================
   1. What a guard has to do — condition grid, then the two answers
   ============================================================ */

.conds{
  list-style:none;
  margin:0 0 clamp(24px,3.6vw,34px);
  padding:0;
  display:grid;
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}

.cond{
  min-width:0;
  padding:clamp(15px,2.4vw,20px) clamp(15px,2.4vw,22px);
  background:var(--white);
  color:var(--ink-2);
  font-size:.97em;
  line-height:1.55;
}
.cond strong{
  display:block;
  margin-bottom:.22em;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
}
.cond::after{
  content:"";
  display:block;
  width:22px;height:3px;
  margin-top:.85em;
  background:var(--water);
  opacity:.5;
}

@media (min-width:720px){
  .conds{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cond:last-child{grid-column:1 / -1}
  .cond:last-child::after{display:none}
}

.two{
  margin-top:clamp(34px,5.5vw,60px);
  padding:clamp(22px,3.6vw,38px) clamp(18px,3vw,34px);
  background:var(--paper);
  border-top:3px solid var(--water);
}

.two__cue{
  margin:0 0 clamp(20px,3vw,28px);
  max-width:56ch;
  font-size:clamp(1.02rem,2.3vw,1.2rem);
  line-height:1.45;
  font-weight:600;
  color:var(--ink);
}

.two__pair{display:grid;gap:clamp(18px,3vw,28px)}

.guard-card{
  min-width:0;
  overflow:hidden;
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:0 12px 28px rgba(14,23,35,.07);
}
.guard-card__visual{
  position:relative;
  height:132px;
  overflow:hidden;
  background:var(--deep);
  border-bottom:4px solid var(--water);
}
.guard-card__visual span{position:absolute;display:block}
.guard-card__visual .rain{top:18px;width:3px;height:32px;border-radius:2px;background:var(--water)}
.guard-card__visual .rain--1{left:27%}.guard-card__visual .rain--2{left:48%;height:42px}.guard-card__visual .rain--3{left:69%;height:27px}
.guard-card__visual .trough{left:17%;right:17%;bottom:20px;height:30px;border:3px solid #C7D3DF;border-top:0;border-radius:0 0 10px 10px}
.guard-card__visual--mesh .mesh{left:14%;right:14%;bottom:52px;height:13px;background:repeating-linear-gradient(90deg,var(--sig-lt) 0 2px,transparent 2px 8px),repeating-linear-gradient(0deg,var(--sig-lt) 0 2px,transparent 2px 7px);transform:skewX(-12deg)}
.guard-card__visual--hood .hood{left:15%;right:21%;bottom:52px;height:35px;border:5px solid var(--sig-lt);border-left:0;border-bottom:0;border-radius:0 30px 0 0;transform:skewX(-8deg)}
.guard-card__visual--hood .flow{right:17%;bottom:42px;width:42px;height:42px;border-right:4px solid var(--water);border-bottom:4px solid var(--water);border-radius:0 0 28px 0;transform:rotate(12deg)}
.guard-card h3{margin:0;padding:20px 20px 15px;font-size:clamp(1.12rem,2.5vw,1.35rem);line-height:1.2}
.guard-card h3 a{font-weight:750}
.guard-facts{margin:0;padding:0 20px}
.guard-facts div{padding:13px 0;border-top:1px solid var(--line)}
.guard-facts dt{margin:0 0 4px;font-family:var(--mono);font-size:.72rem;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--water-2)}
.guard-facts dd{margin:0;color:var(--ink-2);font-size:.94em;line-height:1.48}
.guard-card__fit{margin:16px 20px 20px;padding:13px 14px;background:var(--mist);border-left:4px solid var(--sig);color:var(--ink);font-size:.94em;line-height:1.48}

@media (min-width:900px){
  .two__pair{grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(26px,3.4vw,44px)}
}

/* --- the comparison matrix ------------------------------------------------
   Mobile: one complete labeled record per attribute, both companies named.
   820px and up: a real three-column table; both company columns identical. */

.matrix{
  display:block;
  width:100%;
  margin:clamp(24px,3.8vw,38px) 0 0;
  border-collapse:collapse;
  font-size:.95em;
}

.matrix thead{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;border:0;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;
}

.matrix tbody{display:block}

.matrix tr{
  display:block;
  min-width:0;
  margin-bottom:12px;
  padding:14px 16px 16px;
  background:var(--white);
  border:1px solid var(--line);
}
.matrix tr:last-child{margin-bottom:0}

.matrix th[scope="row"]{
  display:block;
  text-align:left;
  margin-bottom:11px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line-2);
  font-family:var(--mono);
  font-size:.76rem;
  font-weight:600;
  letter-spacing:.09em;
  text-transform:uppercase;
  color:var(--ink-3);
}

.matrix td{
  display:block;
  min-width:0;
  padding:0;
  color:var(--ink-2);
  line-height:1.5;
  overflow-wrap:break-word;
}
.matrix td::before{
  content:attr(data-co);
  display:block;
  margin-bottom:2px;
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--water);
}
.matrix td + td{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}

@media (min-width:820px){
  .matrix{display:table;table-layout:fixed}
  .matrix thead{
    position:static;width:auto;height:auto;margin:0;overflow:visible;
    clip:auto;clip-path:none;white-space:normal;display:table-header-group;
  }
  .matrix tbody{display:table-row-group}
  .matrix tr{display:table-row;margin:0;padding:0;background:none;border:0}
  .matrix tbody tr:nth-child(even){background:var(--paper)}

  .matrix thead td,
  .matrix thead th{
    padding:0 18px 12px;
    border-bottom:2px solid var(--ink);
    text-align:left;
    vertical-align:bottom;
    font-size:1.02rem;
    font-weight:750;
    letter-spacing:-.012em;
    color:var(--ink);
  }
  .matrix thead td{width:22%;border-bottom-color:transparent}
  .matrix thead th{width:39%;border-left:1px solid var(--line)}

  .matrix th[scope="row"]{
    display:table-cell;
    width:21%;
    margin:0;
    padding:16px 18px;
    border-bottom:0;
    border-top:1px solid var(--line);
    vertical-align:top;
  }
  .matrix td{
    display:table-cell;
    padding:16px 18px;
    border-top:1px solid var(--line);
    border-left:1px solid var(--line);
    vertical-align:top;
  }
  .matrix td::before{display:none}
  .matrix td + td{margin:0;padding:16px 18px;border-top:1px solid var(--line)}
}

.two__sort{
  margin:clamp(22px,3.4vw,32px) 0 0;
  max-width:60ch;
  padding-left:clamp(14px,2.2vw,20px);
  border-left:4px solid var(--sig);
  font-size:1.02em;
  line-height:1.5;
  color:var(--ink);
}

/* ============================================================
   2. Nashville debris — measured canopy, then the five forms
   ============================================================ */

.canopy{margin-bottom:clamp(28px,4.4vw,44px);color:var(--ink-2)}

.pct{
  font-weight:750;
  font-size:1.45em;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--water-2);
}

.fall{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:6px;
  margin-bottom:clamp(18px,2.6vw,24px);
  padding:14px 10px;
  background:var(--white);
  border:1px solid var(--mist-2);
}

.fall__form{
  display:block;
  min-width:0;
  padding:6px 2px;
  border-right:1px solid var(--mist);
  color:var(--ink-2);
}
.fall__form:last-child{border-right:0}
.fall__form svg{display:block;width:100%;height:auto}

.mix{margin-bottom:clamp(20px,3vw,28px)}

.deb{
  font-weight:700;
  color:var(--ink);
  box-shadow:inset 0 -.34em 0 rgba(15,95,122,.14);
}

.look{
  margin-top:clamp(24px,3.6vw,34px);
  max-width:56ch;
  padding:clamp(16px,2.4vw,22px) clamp(16px,2.4vw,24px);
  background:var(--white);
  border-left:4px solid var(--water);
  font-size:1.02em;
  color:var(--ink);
}

.debris-matrix{
  width:100%;
  margin:clamp(24px,3.8vw,36px) 0;
  border-collapse:collapse;
  background:var(--white);
  border:1px solid var(--mist-2);
  font-size:.93em;
}
.debris-matrix caption{padding:14px 16px;text-align:left;background:var(--ink);color:#fff;font-weight:700}
.debris-matrix th,.debris-matrix td{padding:13px 14px;text-align:left;vertical-align:top;border:1px solid var(--mist-2);line-height:1.45}
.debris-matrix thead th{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)}
.debris-matrix tbody th{color:var(--ink);font-weight:700}
.debris-matrix tbody td{color:var(--ink-2)}

@media (max-width:679px){
  .debris-matrix,.debris-matrix tbody,.debris-matrix tr,.debris-matrix th,.debris-matrix td{display:block;width:100%}
  .debris-matrix thead{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
  .debris-matrix tr{padding:14px 15px;border-bottom:1px solid var(--mist-2)}
  .debris-matrix tr:last-child{border-bottom:0}
  .debris-matrix th,.debris-matrix td{padding:4px 0;border:0}
  .debris-matrix tbody td::before{display:block;margin-top:5px;font-family:var(--mono);font-size:.68rem;font-weight:650;letter-spacing:.06em;text-transform:uppercase;color:var(--water-2)}
  .debris-matrix tbody td:nth-child(2)::before{content:"Useful starting point"}
  .debris-matrix tbody td:nth-child(3)::before{content:"What to watch"}
}

/* ============================================================
   3. Why guards fail — cross-section, then four attached conditions
   ============================================================ */

.system{
  margin-bottom:clamp(26px,4vw,42px);
  padding:clamp(14px,2.6vw,26px) clamp(10px,2vw,22px);
  background:var(--deep);
  border:1px solid rgba(166,183,199,.22);
}
.system svg{display:block;width:100%;height:auto}

.fail{
  position:relative;
  max-width:70ch;
  margin:0 0 2px;
  padding:clamp(16px,2.6vw,22px) clamp(16px,2.6vw,24px) clamp(16px,2.6vw,22px) clamp(20px,3.2vw,30px);
  background:rgba(231,237,243,.05);
  border-left:3px solid rgba(240,169,59,.45);
  color:var(--on-deep-2);
  font-size:.98em;
}
.fail strong{
  display:block;
  margin-bottom:.3em;
  font-weight:700;
  letter-spacing:-.008em;
  color:#FFFFFF;
}
.fail::before{
  content:"";
  position:absolute;
  left:-6px;
  top:clamp(20px,3vw,27px);
  width:9px;height:9px;
  border-radius:50%;
  background:var(--sig-lt);
}

.honest{
  margin-top:clamp(28px,4.2vw,42px);
  max-width:62ch;
  padding-top:clamp(20px,3vw,26px);
  border-top:2px solid rgba(240,169,59,.5);
  font-size:clamp(1.04rem,2.4vw,1.24rem);
  line-height:1.5;
  color:#FFFFFF;
}

/* ============================================================
   4. The rain check — four marks, a count, and the approved outcome
   ============================================================ */

.walk{
  list-style:none;
  counter-reset:step;
  margin:0;
  padding:0;
  display:grid;
  gap:10px;
}

.step{
  counter-increment:step;
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:clamp(9px,1.8vw,16px);
  align-items:start;
  min-width:0;
}

.step::before{
  content:counter(step);
  display:grid;
  place-items:center;
  width:30px;height:30px;
  margin-top:13px;
  border-radius:50%;
  background:var(--ink);
  color:var(--warm);
  font-family:var(--mono);
  font-size:.86rem;
  font-weight:600;
}

.step__lab{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:clamp(10px,2vw,16px);
  align-items:start;
  min-width:0;
  padding:12px clamp(13px,2.2vw,20px);
  background:var(--white);
  border:1px solid var(--warm-2);
  cursor:pointer;
}
.step__lab:hover{border-color:var(--sig)}

.step__box{
  flex:0 0 auto;
  width:26px;height:26px;
  margin:9px 0 0;
  accent-color:var(--water);
  cursor:pointer;
}

.step__txt{
  display:block;
  min-width:0;
  color:var(--ink-2);
  font-size:.97em;
  line-height:1.55;
}
.step__txt strong{
  display:block;
  margin-bottom:.2em;
  font-weight:700;
  letter-spacing:-.008em;
  color:var(--ink);
}

.step__box:checked + .step__txt strong{color:var(--water-2)}
.step__box:checked + .step__txt{color:var(--ink)}
.step:has(.step__box:checked) .step__lab{background:#F0F7FA;border-color:var(--water)}
.step:has(.step__box:checked)::before{background:var(--water)}

.tally{
  margin:clamp(18px,2.6vw,24px) 0 0;
  padding:12px 16px;
  background:var(--white);
  border:1px solid var(--warm-2);
  font-family:var(--mono);
  font-size:.88rem;
  letter-spacing:.01em;
  color:var(--ink-2);
}

.close{
  margin:clamp(20px,3vw,28px) 0 0;
  max-width:62ch;
  padding-left:clamp(15px,2.4vw,22px);
  border-left:4px solid var(--warm-2);
  font-size:1.02em;
  line-height:1.55;
  color:var(--ink-2);
}
.close.is-complete{
  border-left-color:var(--water);
  color:var(--ink);
  font-weight:500;
}

/* ============================================================
   Footer
   ============================================================ */

.foot{background:var(--deep);color:var(--on-deep-2)}
.foot .shell{padding-block:clamp(26px,4.4vw,40px)}
.foot p{margin:0;max-width:66ch;font-size:.94rem}

/* ============================================================
   404
   ============================================================ */

.gone{background:var(--deep);color:var(--on-deep);min-height:70vh}
.gone .shell{padding-block:clamp(56px,11vw,120px)}
.gone h1{font-size:clamp(1.9rem,6.4vw,3.2rem);color:#FFFFFF;max-width:16ch}
.gone p{margin-top:clamp(20px,3.4vw,30px);max-width:56ch;color:var(--on-deep-2)}
.gone__back{
  display:inline-flex;align-items:center;min-height:48px;margin-top:22px;
  padding:12px 24px;
  background:var(--sig-lt);color:var(--deep);
  font-weight:700;text-decoration:none;
}

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