@charset "UTF-8";
/* 溯启 Soqee. White page, ink text, one cobalt accent. Green and red are kept
   for inspection results only (pass / fault), never for decoration. */
:root {
  --bg: #ffffff;
  --soft: #f5f7fa;
  --ink: #0f1728;
  --ink-2: #344054;
  --muted: #667085;
  --line: #e4e7ec;
  --line-2: #d0d5dd;
  --accent: #2b50e8;
  --accent-hover: #1f3fc4;
  --accent-soft: #eef2ff;
  --ok: #067647;
  --ok-soft: #e7f8ef;
  --bad: #b42318;
  --bad-soft: #fdecea;
  --warn: #b54708;
  --warn-soft: #fff3df;
  --navy: #0b1430;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-lg: 0 1px 2px rgba(16, 24, 40, 0.06), 0 20px 44px -16px rgba(16, 24, 40, 0.2);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --gutter: 24px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { color: var(--ink); font-weight: 700; line-height: 1.25; margin: 0; text-wrap: balance; word-break: keep-all; overflow-wrap: anywhere; }
h1 { font-size: clamp(2.05rem, 4.4vw, 3.25rem); line-height: 1.18; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.125rem; font-weight: 600; line-height: 1.4; }
p { margin: 0 0 1em; }
.ln { display: inline-block; }
a { color: var(--accent); text-underline-offset: 0.22em; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-hover); }
strong, b { color: var(--ink); font-weight: 600; }
code { font-family: var(--mono); font-size: 0.86em; color: var(--ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: 1160px; margin-inline: auto; padding-inline: var(--gutter); }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: #fff; padding: 8px 14px; z-index: 20; border-radius: 0 0 8px 0; }
.skip:focus { left: 0; }

/* Header */
.site-head { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, 0.92); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.site-head-row { display: flex; align-items: center; justify-content: space-between; gap: 12px 24px; min-height: 64px; flex-wrap: wrap; padding-block: 8px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-size: 1.15rem; line-height: 1; margin: 0; }
.brand:hover { color: var(--ink); }
.brand .mark { width: 28px; height: 28px; flex: none; }
.brand b { font-weight: 700; letter-spacing: 0.02em; }
.brand span { color: var(--muted); font-weight: 500; font-size: 0.95rem; }
.brand span:empty { display: none; }
.site-nav { display: flex; align-items: center; gap: 4px 28px; flex-wrap: wrap; font-size: 0.95rem; }
.site-nav a:not(.btn) { color: var(--ink-2); text-decoration: none; padding: 6px 0; font-weight: 500; }
.site-nav a:not(.btn):hover { color: var(--accent); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 22px; border-radius: 10px; border: 1px solid var(--accent); background: var(--accent); color: #fff; font: inherit; font-weight: 600; font-size: 0.97rem; line-height: 1.2; text-decoration: none; cursor: pointer; transition: background-color 0.15s, border-color 0.15s, color 0.15s; }
.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.btn-quiet { background: #fff; color: var(--ink); border-color: var(--line-2); box-shadow: var(--shadow-sm); }
.btn-quiet:hover { background: var(--soft); color: var(--ink); border-color: var(--line-2); }
.btn-sm { min-height: 38px; padding: 0 16px; font-size: 0.92rem; border-radius: 9px; }
.btn[disabled] { opacity: 0.6; cursor: default; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Small status chips, used in the sample report */
.chip { font-style: normal; display: inline-flex; align-items: center; gap: 6px; padding: 2px 10px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; line-height: 1.7; white-space: nowrap; background: var(--soft); color: var(--ink-2); }
.chip::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.chip-ok { background: var(--ok-soft); color: var(--ok); }
.chip-bad { background: var(--bad-soft); color: var(--bad); }
.chip-warn { background: var(--warn-soft); color: var(--warn); }
.chip-plain::before { display: none; }

/* Hero */
.hero { padding-block: clamp(44px, 7vw, 88px) clamp(40px, 6vw, 72px); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr); gap: clamp(36px, 5vw, 72px); align-items: center; }
.hero .lead { font-size: 1.14rem; line-height: 1.8; color: var(--ink-2); max-width: 31em; margin: 22px 0 0; }
.hero .actions { margin-top: 30px; }
.hero-note { display: inline-flex; align-items: center; gap: 10px; margin: 22px 0 0; font-size: 0.92rem; color: var(--muted); }
.hero-note::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px var(--ok-soft); }
.hero-plain { max-width: 46em; }

/* The sample report in the hero */
.hero-visual { position: relative; padding: clamp(18px, 3vw, 34px); border-radius: 22px; background-color: var(--soft); background-image: radial-gradient(var(--line-2) 1px, transparent 1px); background-size: 18px 18px; }
.mock { background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-lg); font-size: 0.86rem; line-height: 1.5; color: var(--ink-2); overflow: hidden; }
.mock-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.mock-head b { font-size: 0.98rem; }
.mock-head small { display: block; color: var(--muted); font-size: 0.8rem; margin-top: 1px; }
.mock-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-bottom: 1px solid var(--line); }
.mock-stats div { padding: 14px 18px; border-left: 1px solid var(--line); }
.mock-stats div:first-child { border-left: 0; }
.mock-stats b { display: block; font-size: 1.55rem; line-height: 1.15; letter-spacing: -0.01em; }
.mock-stats span { color: var(--muted); font-size: 0.78rem; white-space: nowrap; }
.mock-rows { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; }
.mock-rows > * { padding: 9px 18px; border-bottom: 1px solid var(--line); display: flex; align-items: center; min-width: 0; }
.mock-rows > :nth-last-child(-n + 3) { border-bottom: 0; }
.mock-rows .h { white-space: nowrap; color: var(--muted); font-size: 0.76rem; font-weight: 600; background: var(--soft); padding-block: 7px; }
.mock-rows .sn { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); }
.mock-rows code { font-size: 0.78rem; color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Facts strip under the hero */
.strip { border-block: 1px solid var(--line); background: #fff; }
.strip ul { list-style: none; margin: 0; padding: 18px 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px 24px; }
.strip li { display: flex; align-items: center; gap: 10px; font-size: 0.95rem; color: var(--ink); font-weight: 500; }
.strip .icon { color: var(--accent); }

/* Sections */
.sec { padding-block: clamp(56px, 8vw, 104px); }
.sec-soft { background: var(--soft); }
.sec-head { max-width: 44em; margin-bottom: clamp(28px, 4vw, 48px); }
.sec-head p { font-size: 1.08rem; margin: 16px 0 0; }
.more { margin: 28px 0 0; font-weight: 500; }

/* Three plain columns */
.cols3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px clamp(24px, 4vw, 48px); }
.cols3 > div { padding-top: 20px; border-top: 2px solid var(--ink); }
.cols3 h3 { margin-bottom: 8px; }
.cols3 p { margin: 0; }

/* Service plans */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.plan { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 28px; box-shadow: var(--shadow-sm); }
.plan-icon { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; margin-bottom: 18px; }
.plan h3 { font-size: 1.2rem; }
.plan .price { margin: 10px 0 0; font-size: 1.7rem; font-weight: 700; color: var(--ink); line-height: 1.2; letter-spacing: -0.01em; }
.plan .when { margin: 4px 0 0; color: var(--muted); font-size: 0.9rem; }
.ticks { list-style: none; margin: 20px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line); display: grid; gap: 10px; }
.ticks li { display: grid; grid-template-columns: 20px 1fr; gap: 10px; align-items: start; line-height: 1.6; }
.ticks .icon { margin-top: 3px; width: 18px; height: 18px; color: var(--accent); }
.plan .get { margin: auto 0 0; padding: 14px 16px; background: var(--soft); border-radius: 10px; font-size: 0.93rem; line-height: 1.65; }
.plan .ticks { margin-bottom: 20px; }
.plan .get b { display: block; font-size: 0.8rem; color: var(--muted); font-weight: 600; margin-bottom: 2px; }
.addon { margin-top: 16px; display: flex; align-items: center; gap: 16px; padding: 18px 24px; border: 1px dashed var(--line-2); border-radius: 14px; background: #fff; }
.addon .plan-icon { margin: 0; flex: none; }
.addon p { margin: 0; }
.plans + .addon { margin-top: 20px; }
.fine { font-size: 0.86rem; color: var(--muted); line-height: 1.65; }
.after-note { margin: 18px 0 0; }

/* Sample comparison */
.panel { background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-sm); padding: clamp(20px, 3vw, 36px); }
.compare { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px clamp(28px, 5vw, 64px); }
.compare h3 { margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.bars { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.bars li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 12px; font-size: 0.93rem; line-height: 1.5; }
.bars .n { font-weight: 700; color: var(--ink); }
.bars .bar { grid-column: 1 / -1; height: 8px; border-radius: 999px; background: var(--soft); overflow: hidden; }
.bars .bar i { display: block; height: 100%; border-radius: 999px; background: #98a2b3; }
.bars-found .bar i { background: var(--accent); }
.panel-foot { display: flex; align-items: center; gap: 12px; margin: 26px 0 0; padding-top: 18px; border-top: 1px solid var(--line); font-size: 0.9rem; color: var(--muted); }
.uses { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px 28px; margin-top: 32px; }
.uses p { margin: 0; font-size: 0.95rem; line-height: 1.65; }
.uses b { display: block; }

/* Steps: a real sequence */
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 28px 20px; }
.steps li { counter-increment: step; position: relative; padding-top: 52px; }
.steps li::before { content: counter(step); position: absolute; top: 0; left: 0; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); color: #fff; font-weight: 700; font-size: 0.95rem; }
.steps li::after { content: ""; position: absolute; top: 18px; left: 48px; right: -8px; height: 1px; background: var(--line-2); }
.steps li:last-child::after { display: none; }
.steps strong { display: block; margin-bottom: 6px; line-height: 1.45; }
.steps span { font-size: 0.93rem; line-height: 1.65; display: block; }

/* Yes / no lists */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; }
.split > div { border: 1px solid var(--line); border-radius: 16px; padding: 26px 28px; background: #fff; }
.split h3 { margin-bottom: 14px; }
.marks { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.marks li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; line-height: 1.6; }
.marks .icon { width: 18px; height: 18px; margin-top: 4px; padding: 3px; border-radius: 50%; stroke-width: 2.6; }
.yes .icon { background: var(--ok-soft); color: var(--ok); }
.no .icon { background: var(--bad-soft); color: var(--bad); }
.two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px clamp(32px, 6vw, 80px); }
.two .sec-head { margin-bottom: 24px; }
.two .split { grid-template-columns: minmax(0, 1fr); gap: 16px; }

/* FAQ */
.faq-grid { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.6fr); gap: 32px clamp(32px, 6vw, 88px); align-items: start; }
.faq-grid .sec-head { margin: 0; position: sticky; top: 96px; }
.faq { border-bottom: 1px solid var(--line); }
.faq:first-of-type { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 18px 36px 18px 0; font-weight: 600; color: var(--ink); list-style: none; position: relative; line-height: 1.5; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 6px; top: 50%; width: 9px; height: 9px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: translateY(-70%) rotate(45deg); transition: transform 0.15s; }
.faq[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq summary:hover { color: var(--accent); }
.faq > div { padding: 0 36px 20px 0; }
.faq > div > :last-child { margin-bottom: 0; }

/* Closing band */
.band { background: var(--navy); color: #c5cce0; padding-block: clamp(56px, 8vw, 96px); }
.band h2 { color: #fff; }
.band .sec-head p { color: #c5cce0; }
.band-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 36px clamp(32px, 6vw, 80px); align-items: center; }
.band .sec-head { margin: 0; }
.band .actions { margin-top: 30px; }
.band .btn { background: #fff; border-color: #fff; color: var(--ink); }
.band .btn:hover { background: #e9edfb; border-color: #e9edfb; color: var(--ink); }
.band .btn-quiet { background: transparent; border-color: rgba(255, 255, 255, 0.32); color: #fff; box-shadow: none; }
.band .btn-quiet:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.5); color: #fff; }
.pilot { list-style: none; margin: 0; padding: 0; border: 1px solid rgba(255, 255, 255, 0.14); border-radius: 16px; background: rgba(255, 255, 255, 0.04); }
.pilot li { display: grid; grid-template-columns: 5.2em 1fr; gap: 16px; padding: 18px 24px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); line-height: 1.6; }
.pilot li:last-child { border-bottom: 0; }
.pilot b { color: #fff; }

/* Inner pages */
.page-head { padding-block: clamp(40px, 6vw, 72px) 0; }
.page-head h1 { font-size: clamp(1.9rem, 3.8vw, 2.7rem); max-width: 20em; }
.page-head p { font-size: 1.08rem; max-width: 40em; margin: 16px 0 0; }
.page-body { padding-block: clamp(28px, 4vw, 44px) clamp(56px, 8vw, 96px); }

.article { padding-block: clamp(36px, 5vw, 64px) clamp(56px, 8vw, 96px); }
.article-head h1 { max-width: 24em; }
.article-grid { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 40px clamp(40px, 6vw, 80px); align-items: start; margin-top: 36px; padding-top: 36px; border-top: 1px solid var(--line); }
.article-toc { position: sticky; top: 96px; font-size: 0.93rem; }
.article-toc b { display: block; margin-bottom: 12px; }
.article-toc ol { list-style: none; margin: 0 0 24px; padding: 0; border-left: 1px solid var(--line); display: grid; gap: 2px; }
.article-toc li a { display: block; padding: 6px 0 6px 16px; margin-left: -1px; border-left: 1px solid transparent; color: var(--ink-2); text-decoration: none; line-height: 1.5; }
.article-toc li a:hover { color: var(--accent); border-left-color: var(--accent); }
.crumb { font-size: 0.92rem; margin-bottom: 14px; font-weight: 500; }
.crumb a { text-decoration: none; }
.article-head h1 { font-size: clamp(1.8rem, 3.6vw, 2.55rem); }
.article-meta { color: var(--muted); font-size: 0.9rem; margin: 14px 0 0; }
.prose { font-size: 1.03rem; max-width: 860px; }
.prose > :first-child { margin-top: 0; }
.calc-notes, .page-body > .prose { margin-top: 0; }
.prose h2 { font-size: 1.5rem; margin: 2.2em 0 0.7em; scroll-margin-top: 96px; }
.prose h3 { margin: 1.7em 0 0.5em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.1em; }
.prose li { margin-bottom: 0.4em; }
.prose li::marker { color: var(--muted); }
.prose .answer { background: var(--accent-soft); border-radius: 12px; padding: 18px 22px; margin: 0 0 1.6em; color: var(--ink); }
.prose .answer > :last-child { margin-bottom: 0; }
.prose .sources { font-size: 0.92rem; color: var(--muted); }
.prose .faq > div { padding-right: 0; }
.article-cta { margin-top: 48px; padding: 28px 30px; background: var(--navy); border-radius: 16px; color: #c5cce0; }
.article-cta h2 { color: #fff; font-size: 1.35rem; margin-bottom: 8px; }
.article-cta p:last-child { margin: 20px 0 0; display: flex; flex-wrap: wrap; gap: 12px; }
.article-cta .btn { background: #fff; border-color: #fff; color: var(--ink); }
.article-cta .btn:hover { background: #e9edfb; border-color: #e9edfb; }
.article-cta .btn-quiet { background: transparent; border-color: rgba(255, 255, 255, 0.32); color: #fff; box-shadow: none; }
.article-cta .btn-quiet:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }

.guide-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.guide-list li { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 14px; padding: 24px 26px; background: #fff; transition: border-color 0.15s, box-shadow 0.15s; }
.guide-list li:hover { border-color: var(--line-2); box-shadow: var(--shadow-sm); }
.guide-list a { font-size: 1.15rem; font-weight: 600; color: var(--ink); text-decoration: none; }
.guide-list a:hover { color: var(--accent); }
.guide-list p { margin: 6px 0 0; }
.guide-list .article-meta { margin-top: auto; padding-top: 16px; }

/* Tables */
.table-scroll { overflow-x: auto; margin: 0 0 1.4em; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
table { border-collapse: collapse; width: 100%; font-size: 0.94rem; line-height: 1.6; }
caption { text-align: left; color: var(--muted); font-size: 0.88rem; padding: 12px 16px; border-bottom: 1px solid var(--line); }
th, td { text-align: left; vertical-align: top; padding: 11px 16px; border-bottom: 1px solid var(--line); }
tr:last-child > th, tr:last-child > td { border-bottom: 0; }
thead th { background: var(--soft); color: var(--ink-2); font-weight: 600; font-size: 0.86rem; white-space: nowrap; border-bottom: 1px solid var(--line); }
tbody th { font-weight: 600; color: var(--ink); min-width: 6.5em; }
td.num, th.num { text-align: right; white-space: nowrap; }
td code, th code { white-space: nowrap; }
th[rowspan] { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
td[rowspan] { border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* Forms (contact + calculator) */
.form-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px 20px; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field.full { grid-column: 1 / -1; }
.field label { font-weight: 600; font-size: 0.92rem; color: var(--ink); }
.field .hint { font-size: 0.84rem; color: var(--muted); line-height: 1.55; }
input, select, textarea { font: inherit; color: var(--ink); background: #fff; border: 1px solid var(--line-2); border-radius: 9px; padding: 10px 12px; width: 100%; min-height: 44px; box-shadow: var(--shadow-sm); transition: border-color 0.15s, box-shadow 0.15s; }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%23667085' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 34px; }
textarea { min-height: 7.5em; resize: vertical; }
input::placeholder, textarea::placeholder { color: #98a2b3; }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(43, 80, 232, 0.18); border-radius: 9px; }
.inline { display: grid; grid-template-columns: minmax(0, 1fr) 5.5em; gap: 8px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin-top: 18px; padding: 14px 18px; background: var(--ok-soft); color: var(--ok); border-radius: 10px; font-weight: 500; }
.form-status[hidden] { display: none; }
.form-status.error { background: var(--bad-soft); color: var(--bad); }
.form-status textarea { margin-top: 10px; font-size: 0.9rem; font-weight: 400; }

.contact { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 28px clamp(28px, 5vw, 64px); align-items: start; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-sm); padding: clamp(22px, 3vw, 32px); }
.aside h2 { font-size: 1.15rem; margin-bottom: 14px; }
.aside .marks { margin-bottom: 28px; }
.aside .icon { color: var(--accent); background: var(--accent-soft); }
.aside p { font-size: 0.95rem; }

.calc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 24px clamp(24px, 4vw, 40px); align-items: start; }
.calc form { background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-sm); padding: clamp(20px, 3vw, 30px); }
.calc fieldset { min-width: 0; border: 0; padding: 0; margin: 0 0 26px; }
.calc fieldset:last-child { margin-bottom: 0; }
.calc legend { font-weight: 700; color: var(--ink); padding: 0; margin-bottom: 14px; font-size: 1.02rem; }
.result { position: sticky; top: 88px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-lg); padding: clamp(20px, 3vw, 30px); }
.result h2 { font-size: 1.25rem; margin-bottom: 6px; }
.result .table-scroll { margin: 16px 0 0; }
.result th, .result td { padding: 12px 12px; }
.result tbody th { min-width: 0; }
.result tr.best th, .result tr.best td { background: var(--accent-soft); }
.result tr.best th::after { content: "回收最多"; margin-left: 8px; background: var(--accent); color: #fff; font-size: 0.72rem; padding: 2px 8px; border-radius: 999px; font-weight: 600; white-space: nowrap; }
.neg { color: var(--bad); }
.pos { color: var(--ok); }
.calc-block + .calc-block { margin-top: clamp(48px, 7vw, 80px); padding-top: clamp(40px, 6vw, 64px); border-top: 1px solid var(--line); }
.calc-title { font-size: 1.55rem; }
.calc-sub { max-width: 44em; margin: 10px 0 26px; }
.result tr.total th, .result tr.total td { background: var(--accent-soft); font-weight: 700; color: var(--ink); }
.result .payback { margin: 6px 0 0; }
.result .summary { margin: 18px 0 0; font-weight: 600; color: var(--ink); font-size: 1.02rem; }
.result .fine { margin: 14px 0 20px; }
.calc .calc-notes, .calc ~ .calc-notes { margin-top: 48px; }

/* Footer */
.site-foot { background: var(--soft); border-top: 1px solid var(--line); padding-block: 48px 28px; font-size: 0.93rem; }
.site-foot-row { display: flex; justify-content: space-between; gap: 28px 56px; flex-wrap: wrap; }
.site-foot .brand { margin-bottom: 12px; }
.site-foot p { margin: 0 0 0.3em; }
.site-foot nav { display: grid; grid-template-columns: repeat(2, auto); gap: 8px 40px; align-content: start; }
.site-foot nav a { color: var(--ink-2); text-decoration: none; }
.site-foot nav a:hover { color: var(--accent); }
.site-foot .fine { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line); }

@media (max-width: 980px) {
  .hero-grid, .band-grid, .faq-grid, .contact, .calc, .two, .article-grid, .guide-list { grid-template-columns: minmax(0, 1fr); }
  .article-toc { position: static; order: -1; padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--soft); }
  .article-toc ol { margin-bottom: 0; }
  .article-toc .btn { display: none; }
  .faq-grid .sec-head, .result { position: static; }
  .plans, .cols3 { grid-template-columns: minmax(0, 1fr); }
  .strip ul, .uses { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .steps li { padding: 0 0 26px 56px; }
  .steps li::after { top: 40px; bottom: 4px; left: 18px; right: auto; width: 1px; height: auto; }
}
@media (max-width: 640px) {
  :root { --gutter: 20px; }
  .compare, .split, .form-grid { grid-template-columns: minmax(0, 1fr); }
  .site-nav { gap: 2px 18px; }
  .mock-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mock-stats div:nth-child(3) { border-left: 0; }
  .mock-stats div:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .mock-rows > * { padding-inline: 12px; }
  .strip li { font-size: 0.88rem; gap: 8px; }
  .result .wide tr > :nth-child(2), .result .wide tr > :nth-child(3) { display: none; }
  .strip ul { gap: 12px 14px; }
  .addon { align-items: flex-start; }
  .pilot li { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .hero .actions .btn { flex: 1 1 auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}