// Skin · Technique · Temperature in Skincare — L3 data (COMBINED page)
// Anchors: #cold · #heat
// Visual skeleton must match the Oily prototype exactly. Vary copy, never layout.

const OILY = {
  type: "Temperature in Skincare",
  parent: { title: "Technique", href: "/en/skin/technique/" },
  grandparent: { title: "Skin", href: "/en/skin/" },
  totalCount: 80,
  hero: "https://images.unsplash.com/photo-1583416750470-965b2707b355?w=1800&q=80&auto=format&fit=crop",
  heroAlt: "Steam rising from warm water — temperature in skincare",
  h1: "Temperature in skincare. Cold finish, or heat and steam?",
  deck: "Cold and heat both have legitimate uses in a routine. They're not better or worse — they're different tools for different things. The common mistake is treating one as the universal default.",
  intro: "Temperature is among the least-discussed variables in skincare, and one of the few where the mechanism is actually well understood. Cold narrows blood vessels, temporarily reduces puffiness, and can extend the life of a barrier that's been slightly overworked. Heat and steam open the follicular opening, which helps cleansing but also sensitises — so what you apply immediately after steam matters more than usual. Neither extreme belongs in every routine. Below is the complete library on temperature as a technique: cold towel finishes, heat and steam application, and how to think about temperature when choosing your cleansing water.",
  byline: "Edited by Nelly · Beauty & Style Director",
  meta: { count: 80, updated: "Updated 26 April 2026", reading: "Avg. 4 min per piece" },
};

const TYPE_SIBLINGS = [
  { id: "the-three-movements",    title: "The Three Movements",    n: "01", href: "/en/skin/technique/the-three-movements/" },
  { id: "two-finger-spf",         title: "Two-Finger SPF",         n: "02", href: "/en/skin/technique/two-finger-spf/" },
  { id: "double-cleanse",         title: "Double Cleanse",         n: "03", href: "/en/skin/technique/double-cleanse/" },
  { id: "temperature-in-skincare",title: "Temperature",            n: "04", cur: true, href: "/en/skin/technique/temperature-in-skincare/" },
  { id: "patch-testing",          title: "Patch Testing",          n: "05", href: "/en/skin/technique/patch-testing/" },
  { id: "the-forgotten-zones",    title: "The Forgotten Zones",    n: "06", href: "/en/skin/technique/the-forgotten-zones/" },
  { id: "four-minute-routine",    title: "Four-Minute Routine",    n: "07", href: "/en/skin/technique/four-minute-routine/" },
];

const QUICK_FACTS = {
  defn: {
    h: "How temperature affects the skin during a routine",
    body: "Cold causes vasoconstriction — blood vessels narrow, which temporarily reduces visible redness and puffiness. It doesn't 'close pores' in any permanent or structural sense, but it does settle inflammation and slow product absorption, which is sometimes exactly what you want. Heat and steam cause vasodilation — vessels widen, blood flow increases, and follicular openings relax. This makes cleansing more effective but also increases skin reactivity, so applying potent actives immediately after steam carries more risk than on calm, un-heated skin.",
  },
  myths: [
    { m: "Hot water opens pores and cold water closes them.",
      t: "Pores don't open and close like valves. Heat relaxes the follicular canal (useful for cleansing); cold causes vasoconstriction (useful for puffiness). Neither changes pore size permanently." },
    { m: "Steam is always beneficial for the skin.",
      t: "Steam sensitises. Applying a potent acid or retinol to recently-steamed skin accelerates absorption in a way that increases irritation risk." },
    { m: "Cold water finishes are just a wellness ritual.",
      t: "Cold finishes after cleansing genuinely reduce post-cleanse redness for reactive skin. That's a functional benefit, not a ritual one." },
  ],
};

const BEGINNER_PATH = {
  h: "Start here, if temperature technique is new to you.",
  deck: "Five pieces, in order. Under twenty minutes. How to use temperature as a tool rather than a habit.",
  steps: [
    { n: "01", t: "Temperature and skin — what actually changes",           time: "3 min", note: "Vasodilation, vasoconstriction, and what each one does in practice." },
    { n: "02", t: "The cold towel finish — who it's for",                   time: "3 min", note: "When cold calms the skin and when it's purely aesthetic." },
    { n: "03", t: "Steam and skincare — the timing question",               time: "4 min", note: "Why what you apply after steam matters more than the steam itself." },
    { n: "04", t: "Cleansing water temperature — a simple guide",          time: "3 min", note: "Lukewarm is the answer. Here's why the extremes don't serve you." },
    { n: "05", t: "Temperature and sensitive skin — extra considerations",  time: "5 min", note: "Where reactive skin sits on the heat-cold spectrum." },
  ],
};

const TRENDING = [
  { rank: "01", t: "The cold towel finish — does it do anything?",          time: "3 min", auth: "Nelly", date: "Apr 24", img: "https://images.unsplash.com/photo-1583416750470-965b2707b355?w=1100&q=80&auto=format&fit=crop", reads: "11,204" },
  { rank: "02", t: "Steam and your skin — when it helps and when it doesn't", time: "4 min", auth: "Nelly", date: "Apr 18", img: "https://images.unsplash.com/photo-1570194065650-d99fb4bedf0a?w=1100&q=80&auto=format&fit=crop", reads: "8,892" },
  { rank: "03", t: "Cold water rinse after cleansing — the evidence",        time: "3 min", auth: "Iris",  date: "Apr 12", img: "https://images.unsplash.com/photo-1556228720-195a672e8a03?w=1100&q=80&auto=format&fit=crop", reads: "7,341" },
  { rank: "04", t: "Hot water and your barrier — the slow damage",           time: "4 min", auth: "Nelly", date: "Apr 06", img: "https://images.unsplash.com/photo-1620916566398-39f1143ab7be?w=1100&q=80&auto=format&fit=crop", reads: "6,107" },
  { rank: "05", t: "Using a face steamer — a calibrated approach",           time: "5 min", auth: "Iris",  date: "Mar 31", img: "https://images.unsplash.com/photo-1607006344380-b6775a0824a4?w=1100&q=80&auto=format&fit=crop", reads: "5,088" },
];

const FORMAT_GUIDE = {
  h: "Variations, by use case",
  deck: "Cold and heat as targeted tools. Which to use, when, and for how long.",
  formats: [
    { name: "Cold towel finish",    when: "Post-cleanse, reactive or red skin, AM puffiness", avoid: "Immediately before applying actives — slows absorption too much", note: "Pat skin dry, then press a cool damp cloth against cheeks and forehead for ten seconds.", verdict: "★ AM default" },
    { name: "Cold water rinse",     when: "Final cleansing rinse, any skin type",             avoid: "Mid-winter dry skin — can aggravate tightness",                   note: "A functional finish for post-cleanse redness. Two or three rinses, not prolonged exposure.", verdict: "Daily option" },
    { name: "Lukewarm cleansing",   when: "All skin types, all seasons",                      avoid: "Very hot water at any point in cleansing",                       note: "The default. Warm enough to emulsify oil cleanser, cool enough to not stress the barrier.",  verdict: "Universal" },
    { name: "Facial steam",         when: "Pre-cleanse on heavy-SPF or makeup days only",     avoid: "Before applying retinol, acids, or any active",                 note: "Useful for loosening stubborn oil-based residue. No more than five minutes.",             verdict: "Occasional" },
    { name: "Warm compress",        when: "Congested areas, hardened sebum",                  avoid: "Inflamed, broken-out, or sensitised skin",                      note: "A clean cloth soaked in warm water, held over the nose for thirty seconds. Not a steam replacement.", verdict: "Targeted" },
    { name: "Ice rolling",          when: "Morning depuffing, post-flight recovery",          avoid: "Broken capillaries, rosacea-prone skin",                        note: "A cold mass tool. Reduces puffiness temporarily. The effect lasts two to three hours.",     verdict: "AM, contextual" },
  ],
};

const HOWTOS = [
  { t: "The cold towel finish — what it does",                 time: 3, tech: "Cold",      auth: "Nelly", date: "Apr 24", img: "https://images.unsplash.com/photo-1583416750470-965b2707b355?w=900&q=80&auto=format&fit=crop", kick: "Technique", pick: true },
  { t: "Steam and your skin — the calibrated case",            time: 4, tech: "Heat",      auth: "Nelly", date: "Apr 18", img: "https://images.unsplash.com/photo-1570194065650-d99fb4bedf0a?w=900&q=80&auto=format&fit=crop", kick: "Technique", pick: true },
  { t: "Cold water rinse — the evidence",                      time: 3, tech: "Cold",      auth: "Iris",  date: "Apr 12", img: "https://images.unsplash.com/photo-1556228720-195a672e8a03?w=900&q=80&auto=format&fit=crop", kick: "Essay", pick: false },
  { t: "Hot water and the barrier — slow accumulation",        time: 4, tech: "Heat",      auth: "Nelly", date: "Apr 06", img: "https://images.unsplash.com/photo-1620916566398-39f1143ab7be?w=900&q=80&auto=format&fit=crop", kick: "Essay", pick: true },
  { t: "Face steamer — a calibrated protocol",                 time: 5, tech: "Heat",      auth: "Iris",  date: "Mar 31", img: "https://images.unsplash.com/photo-1607006344380-b6775a0824a4?w=900&q=80&auto=format&fit=crop", kick: "Technique", pick: false },
  { t: "Ice rolling in the morning routine",                   time: 3, tech: "Cold",      auth: "Nelly", date: "Mar 25", img: "https://images.unsplash.com/photo-1583416750470-965b2707b355?w=900&q=80&auto=format&fit=crop", kick: "Technique", pick: false },
  { t: "Temperature and sensitive skin",                       time: 5, tech: "Cold",      auth: "Iris",  date: "Mar 19", img: "https://images.unsplash.com/photo-1556228852-80b6e5eeff06?w=900&q=80&auto=format&fit=crop", kick: "Skin type", pick: false },
  { t: "Lukewarm: why the default temperature matters",        time: 3, tech: "Cleansing", auth: "Nelly", date: "Mar 13", img: "https://images.unsplash.com/photo-1512290923902-8a9f81dc236c?w=900&q=80&auto=format&fit=crop", kick: "Essay", pick: false },
  { t: "Warm compress for congested skin",                     time: 3, tech: "Heat",      auth: "Iris",  date: "Mar 07", img: "https://images.unsplash.com/photo-1570194065650-d99fb4bedf0a?w=900&q=80&auto=format&fit=crop", kick: "Technique", pick: false },
  { t: "The cold-start morning routine",                       time: 4, tech: "Cold",      auth: "Nelly", date: "Mar 01", img: "https://images.unsplash.com/photo-1601049541289-9b1b7bbbfe19?w=900&q=80&auto=format&fit=crop", kick: "Routine", pick: false },
  { t: "Post-sauna skincare — the heat window",                time: 4, tech: "Heat",      auth: "Iris",  date: "Feb 23", img: "https://images.unsplash.com/photo-1583416750470-965b2707b355?w=900&q=80&auto=format&fit=crop", kick: "Routine", pick: false },
  { t: "Why cold products feel different on skin",             time: 3, tech: "Cold",      auth: "Nelly", date: "Feb 17", img: "https://images.unsplash.com/photo-1556228720-195a672e8a03?w=900&q=80&auto=format&fit=crop", kick: "Essay", pick: false },
  { t: "Heat and rosacea — the case for cool everything",      time: 5, tech: "Heat",      auth: "Iris",  date: "Feb 11", img: "https://images.unsplash.com/photo-1620916566398-39f1143ab7be?w=900&q=80&auto=format&fit=crop", kick: "Skin type", pick: false },
  { t: "The towel question — cold, warm, or air dry?",         time: 3, tech: "Cleansing", auth: "Nelly", date: "Feb 05", img: "https://images.unsplash.com/photo-1607006344380-b6775a0824a4?w=900&q=80&auto=format&fit=crop", kick: "Essay", pick: false },
  { t: "Chilled eye products — depuffing or placebo?",         time: 3, tech: "Cold",      auth: "Iris",  date: "Jan 30", img: "https://images.unsplash.com/photo-1571875257727-256c39da42af?w=900&q=80&auto=format&fit=crop", kick: "Diagnostic", pick: false },
  { t: "Steam before a sheet mask — does it help?",            time: 3, tech: "Heat",      auth: "Nelly", date: "Jan 24", img: "https://images.unsplash.com/photo-1570194065650-d99fb4bedf0a?w=900&q=80&auto=format&fit=crop", kick: "Technique", pick: false },
  { t: "Exercise and skin temperature — what to do after",     time: 4, tech: "Heat",      auth: "Iris",  date: "Jan 18", img: "https://images.unsplash.com/photo-1556228852-80b6e5eeff06?w=900&q=80&auto=format&fit=crop", kick: "Routine", pick: false },
  { t: "Cold-stored serums — storage vs application",          time: 3, tech: "Cold",      auth: "Nelly", date: "Jan 12", img: "https://images.unsplash.com/photo-1512290923902-8a9f81dc236c?w=900&q=80&auto=format&fit=crop", kick: "Essay", pick: false },
  { t: "The case against boiling-hot showers",                 time: 4, tech: "Heat",      auth: "Nelly", date: "Jan 06", img: "https://images.unsplash.com/photo-1583416750470-965b2707b355?w=900&q=80&auto=format&fit=crop", kick: "Essay", pick: false },
  { t: "Temperature and hyaluronic acid absorption",           time: 3, tech: "Cold",      auth: "Iris",  date: "Dec 31", img: "https://images.unsplash.com/photo-1556228720-195a672e8a03?w=900&q=80&auto=format&fit=crop", kick: "Essay", pick: false },
];

const TECH_FILTERS = ["All", "Cold", "Heat", "Cleansing", "Routine", "Essay", "Diagnostic", "Skin type"];

const TYPE_CROSSLINKS = [
  { id: "the-three-movements",    title: "The Three Movements",  deck: "Press, not rub. The mechanics that change how every product performs.",  count: 143, href: "/en/skin/technique/the-three-movements/" },
  { id: "double-cleanse",         title: "Double Cleanse",       deck: "Oil first, water second. When it's worth it, when it isn't.",            count: 112, href: "/en/skin/technique/double-cleanse/" },
  { id: "the-forgotten-zones",    title: "The Forgotten Zones",  deck: "The eye area. The neck. The zones most routines leave behind.",          count: 119, href: "/en/skin/technique/the-forgotten-zones/" },
  { id: "four-minute-routine",    title: "Four-Minute Routine",  deck: "The minimum-time routine that still works.",                             count: 134, href: "/en/skin/technique/four-minute-routine/" },
];

Object.assign(window, {
  OILY, TYPE_SIBLINGS, QUICK_FACTS, BEGINNER_PATH, TRENDING, FORMAT_GUIDE, HOWTOS, TECH_FILTERS, TYPE_CROSSLINKS,
});